To see the other types of publications on this topic, follow the link: Intermezzi.

Dissertations / Theses on the topic 'Intermezzi'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Intermezzi.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Heinrich, David Klinger Max. "Max Klinger's Intermezzi : a critical analysis /." Title page, contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09ARM/09armh469.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Maluf, Shireen. "Paths not taken : structural-harmonic ambiguities in selected Brahms Intermezzi." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23342.

Full text
Abstract:
One of the remarkable features of Brahm's B-flat major Intermezzo for piano, Op. 76, no. 4 is the ambiguity of its tonal definition. The work disclosed a contrapuntal tension between its fundamental structural-harmonic organization, which is based on an incomplete harmonic progression (V7-I), and its more remote intermediary tonal areas, which Brahms implies throughout the Intermezzo but to which he never wholly commits.
The aim of this investigation is to illustrate how tonal ambiguity is achieved though recurrent "incompletions" of the expected (or at least the more likely) harmonic progressions. The thesis undertakes a detailed study of Brahms' Intermezzo, Op. 76, no. 4, in B-flat major, with additional reference to the openings of Opp. 118, no. 1 (A minor); 118, no. 6 (E-flat minor); 119, no. 1 (B minor); 117, no. 2 (B-flat minor) and 76, no. 8 (C major). The study combines a Schenkerian linear-reductive approach with observations based on phenomenology--after Leonard Meyer and David Lewin--and narrative, after Edward T. Cone.
APA, Harvard, Vancouver, ISO, and other styles
3

Halbrštátová, Lada. "Intermezzo - Centrum pro rodiče a děti." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240276.

Full text
Abstract:
Abstract The main purpose of creating this object was to create a place where people having bad living situation will meet people who live regular lives. This is the reason why two floors were projected. The first floor is designed for social activities whereas the second floor is a housing part with apartments. The advantage of irregular but compact shape of the building is perfect connection between its functional parts. The object does not have any basement and it is placed in a little slopy bulit-up surroundings on the crossing of Tyršova and U Distance streets in Letohrad town. On the first floor there is a main entrance, a coffee, massages, a recreation hall, an art working-room, a gym, changing rooms, administration and the technological background of the object. The second floor does not cover a whole area of the first floor. Apartments, laundry room and drying room are situated here. One of the apartments here is projected as barrier-free as well as whole first floor. Both floors are connected by central staircase with shape of „U“ and an elevator. Roofing of the object is realized by single layered flat roof with classic layer order. The gym is roofed by a flat roof held by glued laminated girders. The construction was projected with regard to synergy of all used materials and systems. The chosen solution of object with two floors (both above the terrain) makes the building pretty marked when looking at it’s location, however it makes the place more integrated and uniform.
APA, Harvard, Vancouver, ISO, and other styles
4

Olivier, Ryan K. "Musica speculativa| An exploration of the multimedia concert experience through theory and practice part I| Imaginary cognition| Interpreting the Topoi of intermedia electroacoustic concert works part II| Musica speculativa| A multimedia concert work in five movements and three intermezzi." Thesis, Temple University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3703038.

Full text
Abstract:

Musica Speculativa is a final project in two parts in which I explore, through both theory and practice, the role of metaphors in our understanding of reality with special attention given to the use of visual representation in multimedia concert works that employ electroacoustics. Part I, entitled, "Imaginary Cognition: Interpreting the Topoi of Intermedia Electroacoustic Concert Works," explores how metaphors play a core role in our musical experience and how aural metaphors can be enhanced by and ultimately interact with visual metaphors to create a contrapuntal intermedia experience. Part II, "Musica Speculativa: A Multimedia Concert in Five Movements and Three Intermezzi," for mezzo-soprano, flute, B-flat bass clarinet, violin, cello, piano, a percussionist performing an array of lightning bottles, a dancer with a gesture-sensing wand, and a technologist operating interactive audio and video processing, focuses on the medieval philosophy of Musica Speculativa and how it relates to our current understanding of the world.

In part I explore the heightened experience of metaphorical exchange through the utilization of multimedia. The starting point is the expansion of visual enhancement in electroacoustic compositions due to the widespread availability of projection in concert halls and the multimedia expectations created through 21st-century Western culture. With the use of visual representation comes the potential to map musical ideas onto visual signs, creating another level of cognition. The subsequent unfolding of visual signifiers offers a direct visual complement and subsequent interaction to the unfolding of aural themes in electroacoustic compositions. The paper surveys the current research surrounding metaphorical thematic recognition in electroacoustic works whose transformational processes might be unfamiliar, and which in turn create fertile ground for the negotiation of meaning. The interaction of media and the differences created among the various signs within the music and the visual art create a heightened concert experience that is familiar to and in many ways expected by contemporary listeners.

Composers such as Jaroslaw Kapuscinski have sought to use multimedia as a means to enhance the concert experience, giving movement to the acousmatic presence in their electroacoustic works. In turn, these works create a concert experience that is more familiar to the 21st-century audience. Through examining Kapuscinski's recent work, Oli's Dream, in light of cognitive research by Zbikowski (1998 & 2002), topic theory by Agawu (1991 & 2009), and multimedia research by Cook (1998), I propose a theory for analyzing contrapuntal meaning in multimedia concert works.

The themes explored in Part I, regarding the use of metaphor to interpret both visual and aural stimuli, ultimately creating a metaphor for a reality never fully grasped due to the limits of human understanding, are further explored artistically in the multimedia concert work, Musica Speculativa. The medieval philosophy of Musica Speculativa suggests that music as it is understood today (musica instrumentalis) is the only tangible form of the metaphysical music ruling human interactions (musica humana) and ordering the cosmos (musica mundana). I found the concept of Musica Speculativa to be a fitting metaphor for how music and art allude to our own perception of reality and our place within that world. The project as a whole re-examines the concept of Musica Speculativa in light of our current technological landscape to gain a deeper understanding of how we interact with the world around us.

APA, Harvard, Vancouver, ISO, and other styles
5

SHELLARD, CARLOS ANDREAS DE ARAUJO. "THE NOMAD DICTIONARY: A CARTOGRAPHY OF INTERMEZZO." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=24769@1.

Full text
Abstract:
PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
O presente trabalho tem como objetivo formular reflexões acerca de aspectos e modulações do conceito e da prática do nomadismo, relacionando-os às viagens no mundo contemporâneo. Uma travessia de oito meses de duração, realizada pelo autor no ano de 2011 através de alguns países da África e Ásia, serve de fio condutor do trabalho. Impressões, experiências e acontecimentos vividos vão-se construindo, em contraponto a citações literárias afins de viajantes, exploradores, romancistas, historiadores e poetas e intercalando-se a formulações teóricas de autores como Deleuze e Guattari, no Tratado de Nomadologia, Michel Onfray em Teoria da viagem e Michel Maffesoli em Sobre o nomadismo.
This work aims to elaborate reflections about the various aspects and modulations of the concept and practice of nomadism, relating them to travel in the contemporary world. An eight months trip, undertaken by the author in 2011 in some countries in Africa and Asia, serves as a foundation to the work. Impressions, personal experiences and events will be discussed and contrasted with quotes by travelers, explorers, novelists, historians and poets. Interspersing these, there will be theoretical formulations of authors such as Deleuze and Guattari, in Treatise on Nomadology, Michel Onfray in Theory of Travel , and Maffesoli in About Nomadism.
APA, Harvard, Vancouver, ISO, and other styles
6

Håkansson, Sofi. "The [Post]industrial Intermezzo : - The Wave, Ripple and Current." Thesis, Umeå universitet, Arkitekthögskolan vid Umeå universitet, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-171038.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Mohr, Lutz. "Eine nordische Macht wird Nachfolger – das Brandenburger Intermezzo und danach …" Lutz Mohr, 2017. https://slub.qucosa.de/id/qucosa%3A7963.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Nedorostová, Klára. "J.Brahms - Drobné klavírní skladby s přihlédnutím k intermezzům." Master's thesis, Akademie múzických umění v Praze. Hudební fakulta AMU. Knihovna, 2010. http://www.nusl.cz/ntk/nusl-79435.

Full text
Abstract:
this master´s thesis J. Brahms - small piano pieces deals with last piano compositions, especially with the opus 117. The work is divided into sic chapters. In the first one I outline the author´s life and his most important compositions. Then I concentrate on the value and sense of the term piano within the author´s work, also on the Brahms´ characteristic musical expression. I present the complex overview of the production dedicated to the instrument as well, of which the petite forms are focused on in more detail. Three intermezzi, op. 117 is dealt with the most widely, and I describe its particular compositions in detail. The thesis is closed by a chapter dedicated to the very last Brahms´ piano pieces.
APA, Harvard, Vancouver, ISO, and other styles
9

Smykowski, Adam. "Heinrich Heines Lyrisches Intermezzo in Vertonungen von Robert Schumann und Robert Franz /." Frankfurt am Main ; Bern ; Paris : P. Lang, 2002. http://catalogue.bnf.fr/ark:/12148/cb388348041.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Campos, Luana Pereira Brant. "Hibridizações no cinema digital : Peter Greenaway no espaço intermezzo e nas potências do falso." reponame:Repositório Institucional da UnB, 2009. http://repositorio.unb.br/handle/10482/4283.

Full text
Abstract:
Dissertação (mestrado)—Universidade de Brasília, Instituto de Artes, Departamento de Artes Visuais, Programa de Pós-Graduação em Arte, 2009.
Submitted by Larissa Ferreira dos Angelos (ferreirangelos@gmail.com) on 2010-04-05T15:13:09Z No. of bitstreams: 1 2009_LuanaPereiraBrantCampos.pdf: 5393645 bytes, checksum: 4e178b4345c44f66a8c341c796cd3846 (MD5)
Approved for entry into archive by Daniel Ribeiro(daniel@bce.unb.br) on 2010-04-19T18:51:03Z (GMT) No. of bitstreams: 1 2009_LuanaPereiraBrantCampos.pdf: 5393645 bytes, checksum: 4e178b4345c44f66a8c341c796cd3846 (MD5)
Made available in DSpace on 2010-04-19T18:51:03Z (GMT). No. of bitstreams: 1 2009_LuanaPereiraBrantCampos.pdf: 5393645 bytes, checksum: 4e178b4345c44f66a8c341c796cd3846 (MD5) Previous issue date: 2009
A presente pesquisa tem como objetivo investigar as transformações ocorridas na estética cinematográfica com a inserção da tecnologia digital. Através da análise do filme Tulse Luper Suitcases, de Peter Greenaway, pretende-se observar em que medida o cinema realizado com a tecnologia digital hibridizase com o vídeo e com a televisão, incorporando procedimentos estéticos destes meios. O solo teórico sobre o qual esta pesquisa se sustenta é a filosofia de Gilles Deleuze. Utiliza-se o conceito de potências do falso para se investigar como o cinema de Peter Greenaway, ao trabalhar as imagens em camadas, rompe com o ideal de verdade, priorizando conceitos como simultaneidade e multiplicidade. O conceito de intercessores também mostrase bastante relevante em nosso trabalho, na medida em que permite identificar a tecnologia digital como um elemento externo que atua como produtor de novos conceitos na imagem em movimento. _________________________________________________________________________________ ABSTRACT
The goal of this present research is to investigate the transformations occurred in the movie aesthetic with the insertion of the digital technology. Through the analysis of the movie Tulse Luper Suitcases, by Peter Greenaway, its intended to observe in what measure the movie produced with the digital technology hybridizes with the video and the television, incorporating aesthetic procedures from these means. The theoretical soil which this research is sustained is the philosophy from Gilles Deleuze. It is used the concept of fake potencies to investigate how the movie made by Peter Greenaway, when working the images in layers, break with the truth ideal, putting concepts as simultaneity and multiplicity as priorities. The concept of intercessors also shows itself pretty relevant in our work, as it allows identifying the digital technology as an external element that acts as a new concept producer in moving images.
APA, Harvard, Vancouver, ISO, and other styles
11

Struck, Michael. "Pasticcio: Intermezzo historironico: Wie man im 21. Jahrhundert immer noch über Robert Schumanns ‚Spätwerk‘ streitet." Allitera Verlag, 2016. https://slub.qucosa.de/id/qucosa%3A23355.

Full text
APA, Harvard, Vancouver, ISO, and other styles
12

Noh, Kyung-Ah. "Gordon Binkerd’s “Intermezzo” From Essays for the Piano (1976): a Comprehensive Analysis of Brahmsian Compositional Influences and Stylistic Elements." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc699944/.

Full text
Abstract:
Gordon Binkerd (1916-2003) was an influential and well-known twentieth century composer. While his choral works are renowned worldwide, his piano music is rather unfamiliar to present-day scholars and performers. Binkerd’s Essays for the Piano (1976) is a set of six pieces that was greatly influenced by Brahms’ music. Especially noteworthy is the first piece of the set, titled “Intermezzo,” which is based on Brahms’ “Intermezzo” Op. 118, No. 1. The fact that Binkerd’s compositional procedures allow for a “recasting” of Brahms’ piece in a way that disguises the original source of his work are intriguing and call for further research on the topic. As such, the main purpose of this study is to analyze Binkerd’s modern transcription-style writing, and consequently examine how it incorporates a series of influences and compositional elements from Brahms’ music. This dissertation is divided into five chapters. The first chapter contains a general overview of piano works by Binkerd that incorporate quotations of works by other composers are addressed. These include Five Pieces for Piano, Suite for Piano: Five Fantasies (Nos. 2, 3, and 4), and the Piano Sonatas Nos. 1-3. The second chapter provides an analytical study of the fundamental structure found in Brahms’ Intermezzo, No. 1 from Sechs Klavierstücke, Op. 118 The third chapter equally analyzes the fundamental structure of Binkerd’s “Intermezzo,” No. 1 from Essays for the Piano. The fourth chapter consists of a comparative study of the findings in Chapter 3, as they relate to both Brahms’ and Binkerd’s intermezzi. The fifth and final chapter is a conclusion.
APA, Harvard, Vancouver, ISO, and other styles
13

Silva, S?rgio Ruschi Bergamachi. "Estudo te?rico de intermedi?rios tetra?dricos acidez / basicidade e estereosseletividade enzim?ticos." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br/handle/123456789/19597.

Full text
Abstract:
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-01-14T18:51:53Z No. of bitstreams: 1 SergioRuschiBergamachiSilva_DISSERT.pdf: 4405606 bytes, checksum: 784604c435bd6eb5424d9dbf6448597d (MD5)
Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-01-15T19:10:11Z (GMT) No. of bitstreams: 1 SergioRuschiBergamachiSilva_DISSERT.pdf: 4405606 bytes, checksum: 784604c435bd6eb5424d9dbf6448597d (MD5)
Made available in DSpace on 2016-01-15T19:10:11Z (GMT). No. of bitstreams: 1 SergioRuschiBergamachiSilva_DISSERT.pdf: 4405606 bytes, checksum: 784604c435bd6eb5424d9dbf6448597d (MD5) Previous issue date: 2014-08-08
No presente trabalho objetivou-se inicialmente, o estudo te?rico da estabilidade de intermedi?rios tetra?dricos formados a partir de rea??es de adi??o ? carbonila utilizando a teoria perturbativa M?ller-Plesset de segunda (MP2) e terceira ordem (MP3). Correla??es lineares entre a diferen?a de energia eletr?nica de rea??es com ?ndices de Wiberg e comprimentos de liga??es C-O foram obtidas, tendo sido observado que a estabilidade dos adutos formados depende diretamente da densidade eletr?nica envolvida entre esses ?tomos. O entendimento dos par?metros eletr?nicos dessas estruturas possui grande import?ncia devido ao grande uso de rea??es qu?micas que em seu curso formam este tipo intermedi?rio tetra?drico. Empregando a metodologia ONIOM (B3LYP:AMBER), avaliou-se a estereosseletividade de uma rea??o enzim?tica entre a enzima CAL B com um ?ster de cadeia longa. Neste estudo, foram obtidas as energias eletr?nicas do estado inicial e do intermedi?rio da etapa lenta da rea??o da transesterifica??o a partir das duas poss?veis faces proquirais Re e Si. O objetivo foi estudar a enantiosseletividade da CAL B e racionaliz?-la a partir da teoria qu?ntica de ?tomos em mol?culas (QTAIM). Um estudo te?rico utilizando compostos inorg?nicos foi realizado com o m?todo ab initio CBS-QB3 objetivando encontrar uma rela??o entre termodin?mica e equil?brio envolvendo ?cidos e bases. Os resultados observados mostraram uma excelente rela??o entre a varia??o da energia livre de Gibbs, ?G, de dissocia??o de ?cidos com o ?G da rea??o de hidr?lise da base conjugada correspondente. Observou-se, ainda, uma rela??o entre o ?G da rea??o de hidr?lise de ?cidos conjugados e seus correspondentes raios at?micos mostrando que a estabilidade desempenha um papel importante nas rea??es de hidr?lise. A import?ncia da solvata??o no comportamento ?cido/base quando comparado a ?Gs te?ricos e experimentais, tamb?m foi avaliada.
The present work aimed first, the theoretical study of tetrahedral intermediate stability formed from carbonyl addition reactions using the second (MP2) and third (MP3) order M?ller?Plesset perturbation theory. Linear correlations between electronic energy difference of reactions with Wiberg Indexes and C-O bond lengths were obtained, and was observed that the stability of adducts formed depends directly of electronic density involved between these atoms. The knowing of electronic parameters of these structures has an important hole due to the large use on reactions that in his course forms this tetrahedral intermediate. Employing the ONIOM (B3LYP:AMBER) methodology, was evaluated the stereoselectivity of a enzymatic reaction between CAL B enzyme and a long chain ester. In this study, were obtained the electronic energies of ground state and intermediate state of transesterification rate-determing step from two possible proquirals faces Re and Si. The objective was study the enantioselectivity of CAL B and rationalizes it using quantum theory of atoms in molecules (QTAIM). A theoretical study employing inorganic compounds was performed using ab initio CBS-QB3 method aiming to find a link between thermodynamic and equilibrium involving acids and bases. The results observed showed an excellent relationship between difference in Gibbs free energy, ?G of acid dissociation reaction and ?G of hydrolysis reaction of the corresponding conjugate base. It was also observed, a relationship between ?G of hydrolysis reaction of conjugate acids and their corresponding atomic radius showing that stability plays an important role in hydrolysis reactions. The importance of solvation in acid/base behavior when compared to theoretical and experimental ?G?s also was evaluated.
APA, Harvard, Vancouver, ISO, and other styles
14

Domeij, Karin. "Tvillingbrorsan som ett annat jag : En studie av tonårstjejers maskulinitetskonstruktioner genom fotografiska självporträtt." Thesis, Konstfack, IBIS - Institutionen för bild- och slöjdpedagogik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-5335.

Full text
Abstract:
Syftet med denna studie är att undersöka vilka konstruktioner av maskulinitet som uttrycks av några tonårstjejer genom deras omförhandlingar av begreppet. Jag vill undersöka vilka subjektspositioner som prövas i förhållande till rådande normer och ideal i en didaktisk situation. Studiens teoretiska perspektiv är socialkonstruktionistisk med genusperspektiv och inspirerad av etnografiska verktyg. I analysarbetet har bildsemiotiska, diskursteoretiska, maskulinitetsteoretiska begrepp och verktyg använts. Undersökningen gjordes på ett Estetprogram på ett gymnasium i Stockholms län, där jag utgick från några elevers arbete med fotografiska självporträtt. Jag vill också belysa vilka subjektspositioner som kan sättas i spel genom iscensättning i fotografisk bild. Uppsatsen syftar även till att bidra med ökad förståelse för hur bildpedagogik kan spela en roll i arbete med genusfrågor i skolan. Resultatet visar på en feminin maskulinitetsdiskurs där klädstilar har en viktig roll för tjejernas konstruktioner och att strukturer mer i det dolda vidmakthåller en cisnormativ uppdelning mellan könen i skolan. Denna studie bidrar till att visa vikten av att inom maskulinitetsforskning rikta fokus på tjejers och kvinnors konstruktioner av maskulinitet och beskriva dessa diskursiva praktiker. Genom detta kan även olika genuskonstruktioner medvetandegöras inom pedagogiska miljöer.
APA, Harvard, Vancouver, ISO, and other styles
15

Tozzi, Silvia <1980&gt. "Caratterizzazione ed isolamento di intermedi delle reazioni di sostituzione elettrofila e nucleofila in serie aromatica." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/1548/.

Full text
Abstract:
1,3,5–Tris(N,N-dialkylamino)benzene derivatives are strongly activated neutral carbon nucleophiles able to stress some reactivity aspects toward more or less activated electrophilic substrates. These very interesting electron-rich benzenes have been firstly synthesized in 1967 and extensively studied. Their supernucleophilic character permits to perform reactions in particularly mild conditions, and make them suitable for mechanistic investigations. In many reactions they permit to isolate –complexes in electrophilic aromatic reactions. The possibility to form moderately stable Wheland intermediates depends both, on the activation of the reagents and on the experimental conditions which makes slow the proton elimination in the re-aromatization process. In presence of a carbon super electrophile reagent as 4,6-dinitrobenzofuroxan or 4,6-dinitrotetrazolepiridine, 1,3,5–tris(N,N-dialkylamino)benzene derivatives afford C–C coupling products which are “double σ complexes”, Wheland–like on the 1,3,5-tris(N,N-dialkylamino)benzene moiety, and Meisenheimer–like on the electrophile moiety. We named these complexes as Wheland–Meisenheimer (W-M) complexes. These complexes are moderately stable at low temperature and they were characterized by NMR spectroscopy methods. Others nucleophile reagents as 2-aminothiazole derivatives give a Wheland-Meisenheimer complex with 4,6-dinitrobenzofuroxan.
APA, Harvard, Vancouver, ISO, and other styles
16

Bernardes, José Antônio Branco 1965. "Os recitativos em Le Devin du Village de Rousseau." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/283946.

Full text
Abstract:
Orientador: Eduardo Ostergren
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Artes
Made available in DSpace on 2018-08-16T23:58:05Z (GMT). No. of bitstreams: 1 Bernardes_JoseAntonioBranco_M.pdf: 6682447 bytes, checksum: 0a76b37323e7c504fdb7e3d911a327d5 (MD5) Previous issue date: 2008
Resumo: Este trabalho procura tratar de questões práticas concernentes a uma realização historicamente informada dos recitativos do intermezzo Le Devin du Village de Jean-Jacques Rousseau (1712-1778). Não tem pretensão de responder todas as questões suscitadas pela partitura original, mas sim de proporcionar o máximo de subsídios ao artista competente - embora não especialista em música francesa de meados do séc. XVIII - que deseje conduzir (reger) esta obra. Os estudos sobre Rousseau têm privilegiado os aspectos teórico-musicais de sua obra. Neste estudo procurou-se estabelecer parâmetros de realização dos recitativos pertencentes ao Devin principalmente através da aplicação dos conceitos e práticas musicais defendidas por Rousseau e outros autores de seu tempo. Muito das sugestões propostas são fruto da aplicação dos tratados de época em apresentações de excertos de Le Devin du Village dirigidos pelo autor em 1997, 2003, 2004 e 2007. Uma performance ou realização historicamente informada deverá ser uma recriação idealizada a partir do conhecimento o mais profundo possível de seu Zeitgeist, o que a tornará necessariamente única e transiente, cada apresentação um novo acontecimento. A mera listagem e citação de fontes de época pouco pode provar por si mesma, o simples acesso a elas não seria garantia de veracidade absoluta. Vivência e experimentação artística são essenciais. Será através de erros e acertos na prática real, com posterior reflexão e ajustes, que consolidaremos uma real compreensão desse repertório. Afinal, o fazer artístico e o pesquisar acadêmico são ambos linguagens distintas e dificilmente comunicáveis e seria um grande engodo postular uma reprodução idêntica àquela ocorrida séculos atrás. De fato, não é possível abandonarmos nossa individualidade, que é realmente do séc. XXI. Compete-nos, através de um estudo profundo, adquirir a capacidade de atuar no estilo e pensamento de época como uma segunda natureza, unindo os diversos campos envolvidos em um todo coerente no atual contexto de realização artística. Enfim, o exercício do goût
Abstract: This work seeks to address practical issues concerning the performance of recitatives from Jean-Jacques Rousseau's (1712-1778) intermezzo Le Devin du Village from a historically informed perspective. There is no pretension in answering all issues raised raised upon examination of the original score, rather to offer musical, technical and stylistic subsidies to the competent musician - not necessarily expert on mid-18th century French music - when faced with the task of conducting this work. Studies about Rousseau have for the most part tended to favor the music-theoretical aspects of his works. In this study the author proposes to establish parameters for the performance of these recitatives mainly through the application of the concepts taken from historical music treatises and musical practices advocated by Rousseau himself and contemporary authors. Many of the proposed suggestions are the result of practical experiences acquired during the performances of excerpts from Le Devin du Village conducted by the author in 1997, 2003, 2004 and 2007. Several ideas discussed by in this dissertation will allow for an idealized re-creation of this intermezzo stemming from the deepest possible possible knowledge of its Zeitgeist, which will necessarily be unique and transient. The mere citation of historical sources nothing can prove by itself; direct access to these sources is no guarantee of absolute musical veracity. The artistic musicmaking and academic research are two distinct languages and of difficult intercommunicability. We are a "child of our time". It is our responsability, however, acquire a deeper historical knowledge for a keener insight into the style and thought of that epoch in order to develop the ability to act and perform as if it were one's own second nature. Hopefully it will unite the various fields of the art involved in making a coherent whole resulting in a new context of artistic realization. The exercise of bon goût at last
Mestrado
Musica
Mestre em Música
APA, Harvard, Vancouver, ISO, and other styles
17

Impalà, Dario Franco <1981&gt. "Nuovi processi catalitici a minor impatto ambientale per la sintesi di intermedi e/o prodotti di chimica fine." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/1623/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
18

Oliveira, Maiara Rodriguez de. "Efeitos da varia??o sazonal sobre o metabolismo intermedi?rio e o status oxidativo de Tropidurus catalanensis (Squamata, Tropiduridae)." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2015. http://tede2.pucrs.br/tede2/handle/tede/5953.

Full text
Abstract:
Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2015-04-28T13:43:39Z No. of bitstreams: 1 467666.pdf: 1009580 bytes, checksum: fdf4a9b22505abde150b877e386a5b96 (MD5)
Made available in DSpace on 2015-04-28T13:43:39Z (GMT). No. of bitstreams: 1 467666.pdf: 1009580 bytes, checksum: fdf4a9b22505abde150b877e386a5b96 (MD5) Previous issue date: 2015-03-23
Conselho Nacional de Pesquisa e Desenvolvimento Cient?fico e Tecnol?gico - CNPq
During the cycle of life of organisms, the food intake is crucial to maintenance and anticipation of biological events. One of the major events in terms of metabolic costs is reproduction. Indicators of oxidative status may become important tools in conservation biology, in order to evaluate survival and reproduction expectations on organisms, as well as to elucidate the effects of anthropic impacts among populations in their natural environment. Tropidurus catalanensis it is a dark-colored and medium size lizard that can be found in rocky outcrops, and has a day-light habit and territorial behavior. It?s reproductive period goes to September from January, with males defending its harem and females tend to be more sedentary. The objective of the present study was to analyze seasonal variations of the intermediate metabolism, body index and biomarkers of the oxidative status of males and females from a population of Tropidurus catalanensis from Pampa biome, which occurs in Argentina, Brazil and Uruguay. The study was developed in a farm located in the city of Alegrete, RS. The study lasted one year, and it was collected 73 animals by active search and manual capture. It was measured the snout-vent-length (SVL), the body weight and it was taken blood samples by cardiac puncture with heparinized syringes.It was analyzed total proteins, uric acid, glucose, total lipids, triglycerides, total cholesterol and VLDL cholesterol of the blood plasma. On the liver, it was analyzed the levels of total proteins, glycogen, total lipids and triglycerides. On the liver, kidneys and muscle tissue from the lizard?s tale it was analyzes the levels of lipid peroxidation (TBARS) and the activities of the following antioxidant enzymes: superoxide dismutase (SOD), catalase (CAT) and glutathione S-transferase (GST). It was also measured the hepatosomatic and gonadosomatic index, as well as the abdominal fat. The present results indicate that this lizard has a clear pattern of seasonal variation on its metabolism, its oxidative stress biomarkers and its body indexes. The winter period seems to induce a hypometabolic state mainly in males, and the reproductive period seems to be the biological event that requires the largest energetic demands, especially in females. These costs caused by reproduction may increase the vulnerability of the species to any environmental disturbance. Thus, the present study can be considered important on the description and understanding of the effects of the seasonality on the intermediate metabolism and oxidative status of free-living lizards, providing resources for the conservation of herpetofauna.
Ao longo do ciclo de vida dos organismos, a entrada de nutrientes se faz necess?ria para a manuten??o e antecipa??o de eventos biol?gicos. Um dos eventos com maiores custos para o metabolismo ? a reprodu??o. Marcadores do status oxidativo podem tornar-se ferramentas importantes na biologia da conserva??o para avaliar expectativas de sobreviv?ncia e reprodu??o nos organismos, bem como elucidar os efeitos de impactos antr?picos em popula??es em ambiente natural. Tropidurus catalanensis ? um lagarto encontrado em afloramentos de rocha, de porte m?dio e cor escura, com h?bito diurno e comportamento territorialista. O per?odo reprodutivo inicia-se em setembro e se encerra em janeiro, onde machos defendem seus har?ns e f?meas tornam-se residentes. O objetivo do presente estudo foi analisar as flutua??es sazonais do metabolismo intermedi?rio, de ?ndices corporais e marcadores do status oxidativo de machos e f?meas de uma popula??o de Tropidurus catalanensis, que habita os campos do Pampa, bioma que abrange os pa?ses Argentina, Brasil e Uruguai. O estudo foi desenvolvido em uma ?rea localizada em Alegrete, RS. Foram coletados 73 animais ao longo de um ano, atrav?s de busca ativa e captura manual. Houve o levantamento do comprimento rostro-cloacal (CRC), da massa corporal e foram retiradas amostras de sangue atrav?s de pun??o card?aca com o aux?lio de seringas heparinizadas.No plasma foram analisados os n?veis de prote?nas totais, ?cido ?rico, glicose, lip?deos totais, triglicer?deos, colesterol total e colesterol VLDL. No f?gado foram analisados os n?veis de prote?nas totais, glicog?nio, lip?deos totais e triglicer?deos. Nos tecidos hep?tico, renal e por??o do m?sculo caudal foram analisados os n?veis de lipoperoxida??o (TBARS) e a atividade das enzimas antioxidantes super?xido dismutase (SOD), catalase (CAT) e glutationa S-transferase (GST). Tamb?m foram levantados os ?ndices hepatossom?tico, gonadossom?tico e de gordura abdominal. Os resultados obtidos revelam que este s?urio apresenta um claro padr?o de varia??o sazonal em seu metabolismo, dos marcadores de estresse oxidativo e nos ?ndices corporais. Os meses de inverno parecem levar a um estado de hipometabolismo principalmente em machos, assim como o per?odo reprodutivo parece ser o evento biol?gico que exige maior demanda energ?tica, principalmente para as f?meas. Estes custos ocasionados pela reprodu??o podem tornar a esp?cie mais vulner?vel a altera??es em seu meio ambiente. Sendo assim, o presente trabalho pode ser considerado importante na descri??o e entendimento dos efeitos da sazonalidade no metabolismo intermedi?rio e no status oxidativo de lagartos de vida livre, dando subs?dios para a conserva??o da herpetofauna.
APA, Harvard, Vancouver, ISO, and other styles
19

Braghirolli, Fernando Machado. "Estudo sazonal do metabolismo intermedi?rio e do balan?o oxidativo de Hyalella kaingang (Crustacea, Hyalellidae) em ambiente natural." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2015. http://tede2.pucrs.br/tede2/handle/tede/6205.

Full text
Abstract:
Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2015-07-07T13:22:11Z No. of bitstreams: 1 471669 - Texto Completo.pdf: 642214 bytes, checksum: 15f92d44ec9d54a455925b6917080ee4 (MD5)
Made available in DSpace on 2015-07-07T13:22:11Z (GMT). No. of bitstreams: 1 471669 - Texto Completo.pdf: 642214 bytes, checksum: 15f92d44ec9d54a455925b6917080ee4 (MD5) Previous issue date: 2015-02-09
Conselho Nacional de Pesquisa e Desenvolvimento Cient?fico e Tecnol?gico - CNPq
Currently, the execution of biological research that is able to classify and characterize the biodiversity and its ecological relations has been increasingly important and necessary in order to achieve environmental conservation. Conservation physiology is concerned about studying and qualifying many variables related to an organism, so that is possible to increase the knowledge about the functioning of a given species and to detail main environmental requirements or to establish periods of natural vulnerability. The genus Hyalella presents an American distribution and has a great importance on the food chain where it occurs, and becoming a fundamental link in processes of energy transference. The amphipod Hyalella kaingang, a very recent described species and so far not very studied, was used on this study of seasonal variation, and the objective of the present work was to analyze the metabolic behavior, the metabolic allocation, the levels of lipid peroxidation and the activity of antioxidant enzymes of the species. Thirty animals from each sex were used each season of the year, which were collected at Centro de Pesquisa e Conserva??o da Natureza (CPCN) Pr?-Mata, located at S?o Francisco de Paula, Rio Grande do Sul.In the field, animals were euthanized by cryoanesthesia and in the laboratory they were homogenized in order to quantify levels of total proteins, glycogen, lipids, triglycerides, glycerol lipid peroxidation and the activity of the antioxidant enzymes superoxide dismutase, catalase and glutathione S- transferase. There was significative difference in the levels of glycogen, lipids, triglycerides, lipoperoxidation and in the activity of the enzymes superoxide dismutase and glutathione S-transferase over a full seasonal cycle in both males and females. The results of biomarkers from energetic metabolism and from oxidative stress indicate a feeding trend directed to the ingestion of proteins, and it is also suggested that the reproductive period of the species may be long-lasting, with this hypothesis being based also on the observation of pregnant females in many of the analyzed seasons. It is also suggested that there may be a reproductive peak during autumn. However, more studies must be done with this species so that the knowledge about its reproductive biology, general ecology and physiology can be increased. The present work also reinforces the idea that must be a greater interaction between different scientific fields so that a more precise profile of any given organism can be stated.
Atualmente, a realiza??o de levantamentos biol?gicos que sejam capazes de classificar e caracterizar a biodiversidade e suas rela??es ecol?gicas tem sido cada vez mais importante e necess?ria na busca da conserva??o ambiental. A fisiologia da conserva??o preocupa-se em estudar e qualificar diversas vari?veis relacionadas a um organismo, para que assim seja poss?vel ampliar os conhecimentos acerca do funcionamento de determinada esp?cie e detalhar necessidades b?sicas ambientais ou estabelecer per?odos de vulnerabilidade natural. O g?nero Hyalella, de distribui??o americana, tem uma grande import?ncia nas cadeias tr?ficas onde ocorrem, tornando-se uma liga??o fundamental em processos de transfer?ncia energ?tica. O anf?podo Hyalella kaingang, uma esp?cie recentemente descrita e pouco estudada, foi utilizada nas pesquisas referentes ?s an?lises sazonais, e o objetivo do presente trabalho foi analisar o funcionamento metab?lico, a aloca??o energ?tica, os n?veis de lipoperoxida??o e atividades de enzimas antioxidantes da esp?cie. Foram utilizados 30 animais de cada sexo em cada esta??o do ano, os quais foram coletados dentro do Centro de Pesquisa e Conserva??o da Natureza (CPCN) Pr?-Mata, no munic?pio de S?o Francisco de Paula, Rio Grande do Sul.Em campo, os animais foram eutanaziados por crioanestesia e no laborat?rio, homogeneizados para a quantifica??o dos n?veis de prote?nas, glicog?nio, lip?dios, triglicer?deos, glicerol, lipoperoxida??o e a atividade das enzimas super?xido dismutase, catalase e glutationa S-transferase. Houve diferen?a significativa nos n?veis de glicog?nio, lip?dios, triglicer?deos, lipoperoxida??o e na atividade das enzimas super?xido dismutase e glutationa S-transferase ao longo de um ciclo sazonal, tanto em machos como em f?meas.Os resultados encontrados a partir dos biomarcadores de metabolismo energ?tico e do estresse oxidativo indicam tend?ncias alimentares direcionadas ao consumo predominantemente de prote?nas, e tamb?m que o per?odo reprodutivo da esp?cie seja longo, hip?tese baseada tamb?m na observa??o de f?meas ov?geras em muitas esta??es. Sugere-se tamb?m, que exista um pico de atividade reprodutiva no outono. Contudo, mais estudos devem ser realizados com a esp?cie para que possam ser aprofundados os conhecimentos acerca da biologia reprodutiva, ecologia geral e fisiologia desta esp?cie. O presente trabalho refor?a a ideia de que deve haver uma maior integra??o entre diferentes campos cient?ficos para que se possa obter um perfil mais preciso de um determinado organismo.
APA, Harvard, Vancouver, ISO, and other styles
20

Souza, Graziele Lopes de. "S?ntese de ?xidos alternativos para c?lulas a combust?vel de ?xido s?lido de temperatura intermedi?ria." PROGRAMA DE P?S-GRADUA??O EM CI?NCIA E ENGENHARIA DE MATERIAIS, 2017. https://repositorio.ufrn.br/jspui/handle/123456789/24413.

Full text
Abstract:
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-12-01T23:25:10Z No. of bitstreams: 1 GrazieleLopesDeSouza_DISSERT.pdf: 2319933 bytes, checksum: 41ca637533facb729220921e1dc4c6ce (MD5)
Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-12-05T20:18:40Z (GMT) No. of bitstreams: 1 GrazieleLopesDeSouza_DISSERT.pdf: 2319933 bytes, checksum: 41ca637533facb729220921e1dc4c6ce (MD5)
Made available in DSpace on 2017-12-05T20:18:40Z (GMT). No. of bitstreams: 1 GrazieleLopesDeSouza_DISSERT.pdf: 2319933 bytes, checksum: 41ca637533facb729220921e1dc4c6ce (MD5) Previous issue date: 2017-01-30
Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)
As c?lulas a combust?vel de ?xido s?lido s?o os dispositivos mais eficientes at? ent?o inventados para a convers?o de combust?veis qu?micos diretamente em energia el?trica. Estes dispositivos ainda apresentam como desvantagem o funcionamento em temperatura relativamente elevada. Catodos da s?rie La2-xNiO4+d com estrutura K2NiF4 t?m se mostrado promissores condutores mistos a temperaturas intermedi?rias. O interesse por estes ?xidos como material funcional para catodo deve-se principalmente ? sua permeabilidade a oxig?nio e sua estabilidade qu?mica e t?rmica. Este material tem coeficiente de expans?o t?rmica compat?vel com eletr?litos pertencentes a fam?lia La10-x(SiO4)6O2+-d com estrutura apatita. Estes eletr?litos t?m condutividades superiores aos eletr?litos ? base de zirc?nia, se utilizados na mesma faixa de temperatura que o catodo acima citado. Este trabalho reporta a s?ntese de p?s de silicato de lant?nio tipo apatita de composi??o La10Si6O27 e niquelato de lant?nio (La2NiO4) para serem usados como materiais de eletr?lito e catodo, respectivamente, em c?lulas a combust?vel de ?xido s?lido. O silicato de lant?nio foi obtido a partir de uma rota qu?mica de co-precipita??o, enquanto o catodo foi obtido pelo m?todo do citrato. O procedimento de s?ntese proposto neste trabalho para a obten??o do material de eletr?lito ? vantajoso por reduzir o consumo de energia e o tempo de processamento, elementos chaves para reduzir o custo total de manufatura. Ao termino das s?nteses os p?s precursores foram caracterizados por an?lise termogravim?trica. Os p?s de silicato de lant?nio foram calcinados entre 500 e 900 ?C e caracterizados por difratometria de raios X com refinamento Rietveld dos dados de difra??o e microscopia eletr?nica de varredura (MEV). O niquelato de lant?nio foi calcinado em uma ?nica temperatura, 1200 ?C, por 4h e caracterizado por MEV. A caracteriza??o estrutural do eletr?lito indicou a forma??o de material com fase secund?ria ap?s calcina??o a 900 ?C. O efeito da temperatura de sinteriza??o, variada entre 1400 a 1450 ?C, nas propriedades el?tricas foram investigados por espectroscopia de imped?ncia entre 400 e 800 ?C em atmosfera de ar. O eletr?lito de silicato de lant?nio sinterizado a 1450 ?C apresentou condutividade el?trica total de 2,12x10-3 S.cm-1 a 700 ?C, pr?ximos aos da literatura para amostras sinterizadas a 1500 ?C. O desempenho eletroqu?mico como material de catodo foi avaliado em uma configura??o de c?lula sim?trica (catodo/substrato/catodo) usando a t?cnica de espectroscopia de imped?ncia. Catodos de niquelato de lant?nio obtidos por serigrafia e sinterizados a 1300 ?C por 4 h apresentaram uma resist?ncia espec?fica de ?rea (REA) de 2,85 ohm.cm2 a 800 ?C em atmosfera de oxig?nio. O niquelato de lant?nio foi misturado com o material do eletr?lito e sinterizado na mesma temperatura usada para sinteriza??o do filme de catodo a fim de avaliar poss?veis rea??es qu?micas entre estes materiais. Os materiais mostraram bons resultados eletroqu?micos se comparados com a literatura e estabilidade qu?mica at? a temperatura de 1300 ?C.
Solid oxide fuel cells are the most efficient devices ever invented for the conversion of chemical fuels directly into electrical energy. These devices still have the disadvantage of operating at relatively high temperature. La2-xNiO4+d cathode, series materials with structure K2NiF4, have been considered as very promising materials due to their high mixed ionic electronic to intermediate temperature. The interest in these oxides as functional material for cathode increased because of its oxygen permeability and its stability. This material has coefficient of thermal expansion compatible with electrolytes from the La10-x(SiO4)6O2+-d family and apatite structure. These electrolytes have higher conductivities than zirconia-based electrolytes if used in the same temperature range as the above-mentioned cathode. This work reports the synthesis of apatite-type lanthanum silicate powders with nominal composition La10Si6O27 and Lanthanum nickelate (La2NiO4) for using as electrolyte and cathode materials, respectively, in solid oxide fuel cells. The lanthanum silicate was obtained from a co-precipitation chemical route, while the cathode was obtained by the citrate method. The herein proposed synthetic procedure is advantageous in reducing energy consumption and processing time, key elements to decrease the total manufacturing cost. At the end of the syntheses, the precursors powders were characterized by thermogravimetric analysis. The lanthanum silicate powders as prepared were calcined between 500 and 900 ?C and characterized by X-ray diffraction (XRD), Rietveld refinement and scanning electron microscopy (SEM). Already the lanthanum nickelate was calcined in a single temperature 1200 ?C for 4h and characterized by SEM. The structural characterization of the electrolyte indicated the formation of biphasic material after calcination at 900 ?C. The effect of sintering temperature, ranging from 1400 to 1450 ?C, on the electrical properties was investigated by impedance spectroscopy. Electrical measurements were recorded in the 400 ? 800 ?C temperature range in air. The lanthanum silicate electrolyte sintered at 1450 ?C exhibited total electrical conductivity 2.12 x 10-3 S.cm-1 in 700 ?C comparable with samples from literature prepared and sintered at 1500 ?C. The electrochemical performance as cathode material was evaluated in a symmetrical cell configuration (cathode/substrate/cathode) using the electrochemical impedance spectroscopy. Lanthanum nickelate cathodes obtained by screen printing and sintered at 1300 ? C for 4 h had an area specific resistance (ASR) of 2.85 ohm.cm2 at 800 ? C under oxygen atmosphere. Lanthanum nickelate was mixed with the electrolyte material and sintered at the same temperature used to sinter the cathode film, in order to evaluate possible chemical reactions between them. The materials showed good electrochemical results compared to the literature and chemical stability up to 1300 ? C.
APA, Harvard, Vancouver, ISO, and other styles
21

Ara?jo, Gabriela Monteiro de. "Passividade na interface pr?tese/pilar intermedi?rio de infraestrutura implantossuportadas confeccionadas pela tecnologia CAD/CAM e m?todo convencional." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17849.

Full text
Abstract:
Made available in DSpace on 2014-12-17T15:43:56Z (GMT). No. of bitstreams: 1 GabrielaMA_DISSERT.pdf: 606059 bytes, checksum: cac128da2c04d2e2044a79faa5d2f38c (MD5) Previous issue date: 2014-08-28
The objective of this research was to evaluate the passivity and strain induced in infrastructures screwed on abutments, made by CAD/CAM technology, and to compare these samples with parts manufactured by conventional casting. Using CAD/CAM technology, 4 samples were made from zirconia (Zircad) and 4 samples were manufactured from cobaltchrome (CoCrcad). The control groups were 4 specimens of cobalt-chrome, made by onepiece casting (CoCrci), for a total of 12 infrastructures. To evaluate the passivity, the infraestructures were installed on the abutments. One end was tightened and the vertical gap between the infrastructure and the prosthetic abutment was measured with scanning electron microscopy (250?). The mean strain in these infrastructures was analyzed via the photoelasticity test. A significant difference (p = 0.000) in passivity was observed between the control (CoCrci) and sample groups (CoCrcad and CoCrci). CoCrcad exhibited the best value of passivity (48.76 ? 13.45 μm) and CoCrci the worst (187.55 ? 103.63 μm), Zircad presented an intermediate value (103.81 ? 43.15 μm). When compared to the other groups, CoCrci showed the highest mean strain around the implants (17.19 ? 7.22 kPa). It was concluded that the zirconia infrastructure made by CAD / CAM showed a higher vertical marginal misfit than those made in cobalt-chromium alloy with the same methodology, however, the tension generated in the implants was similar. The CAD/CAM technology is more accurate for passivity and mean strain of infrastructure screwed on abutments than conventional manufacturing techniques
O objetivo desta pesquisa foi avaliar a passividade e a tens?o induzida em infraestruturas parafusadas sobre pilares, confeccionadas por tecnologia CAD / CAM, e comparar com infraestruturas fabricadas por fundi??o convencional. Com a utiliza??o da tecnologia de CAD / CAM, 4 infraestruturas de 3 elementos foram confeccionadas em zirc?nia (ZirCAD) e 4 em cobalto-cromo (CoCrcad). Para o grupo controle foram utilizadas 4 infraestruturas em cobalto- cromo, confeccionadas por fundi??o em monobloco (CoCrci), totalizando 12 infraestruturas. Para avaliar a passividade, as infraestruturas foram instaladas sobre os pilares. Uma extremidade foi apertada e a diferen?a vertical entre a infraestrutura e o pilar prot?tico na outra extremidade foi medida com microscopia eletr?nica de varredura (250 ?). A tens?o m?dia gerada aos implantes foi analisada por meio do teste de fotoelasticidade. An?lise de Vari?ncia (ANOVA) foi aplicada a fim de comparar as m?dias entre os grupos para a passividade e ?rea de tens?o. Com isso, para a compara??o dois a dois entre os grupos, o teste T foi utilizado para a avalia??o da passividade e teste Tukey para a ?rea de tens?o. Foi observada uma diferen?a significativa (p = 0,000) na passividade entre os grupos controle (CoCrci) e demais amostras (CoCrcad e CoCrci). CoCrcad exibiu o menor valor de passividade (48,76 ? 13:45 μm) e CoCrci o maior (187,55 ? 103,63 μm), Zircad apresentou um valor intermedi?rio (103.81 ? 43.15 μm). Quando comparado com os outros grupos, CoCrci apresentou a maior m?dia tens?o ao redor dos implantes (17,19 ? 7,22 kPa). Concluiuse que as pe?as confeccionadas por CAD/CAM em zirc?nia apresentaram uma maior desadapta??o marginal vertical do que aquelas fabricadas em cobalto-cromo com a mesma metodologia, por?m, a tens?o gerada aos implantes foi semelhante. Entretanto, a tecnologia CAD/CAM foi mais precisa do que a t?cnica convencional de fabrica??o de infraestruturas parafusadas sobre pilares prot?ticos, tanto em rela??o ao desajuste marginal, quanto ? tens?o gerada aos implantes
APA, Harvard, Vancouver, ISO, and other styles
22

Iannuzzo, Leonardo. "Studio di intermedi e prodotti di sostituzione in reazioni di accoppiamento C-C fra derivati benzofurazanici e nucleofili aromatici ed eteroaromatici." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14466/.

Full text
Abstract:
This work is based on the study of electrophile/nucleophile combinations in aromatic substitution reactions. In particular, C-C coupling reactions were carried out using 10-π heteroaromatic systems like benzofuroxans or benzofurazans and neutral aromatic nucleophiles such as 1,3,5-triamminobenzene-, 1,3,5- trihydroxybenzene- or 2-aminothiazole- derivatives. The presence on electrophilic reagents of good leaving groups such as the chlorine atom allowed to obtain substitution products, with a scaffold bearing both an electron-donor and an electron-acceptor moiety. This kind of products can be of great interest in applicative fields, for example in the biological field and as materials for the conversion of energy. Moreover, by combining electrophiles such as 4,6-dinitrobenzofuroxan, 4,6-dinitrobenzofurazan and 4,6-dinitrotetrazolopyridine with 1,3,5-trihydroxybenzene- or 2-aminothiazole- derivatives, new Meisenheimer intermediates have been identified and characterized by NMR experiment at variable temperature.
APA, Harvard, Vancouver, ISO, and other styles
23

Azevedo, Ivanilka Lima de. "Reflex?es sobre a constru??o e evolu??o de conceitos geom?tricos nas s?ries intermedi?rias do ensino fundamental." Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/14270.

Full text
Abstract:
Made available in DSpace on 2014-12-17T14:36:10Z (GMT). No. of bitstreams: 1 IvanilkaLA_TESE_1_a_150.pdf: 4520585 bytes, checksum: 18c2643e49e2eac92f9fe5befa225c45 (MD5) Previous issue date: 2010-05-20
This thesis represents a didactic research linked to the Post-graduation Programme in Education of the Universidade Federal do Rio Grande do Norte which aimed to approach the construction of the geometrical concepts of Volume of the Rectangular Parallelepiped, Area and Perimeter of the Rectangle adding a study of the Area of the Circle. The research was developed along with students from the 6th level of the Elementary School, in a public school in Natal/RN. The pedagogical intervention was made up of three moments: application of a diagnostic evaluation, instrument that enabled the creation of the teaching module by showing the level of the geometry knowledge of the students; introduction of a Teaching Module by Activities aiming to propose a reflexive didactic routing directed to the conceptual construction because we believed that such an approach would favor the consolidation of the learning process by becoming significant to the apprentice, and the accomplishment of a Final Evaluation through which we established a comparison of the results obtained before and after the teaching intervention. The data gathered were analyzed qualitatively by means of a study of understanding categories of mathematical concepts, in addition to using descriptive statistics under the quantitative aspect. Based on the theory of Richard Skemp, about categorization of mathematical knowledge, in the levels of Relational and Instrumental Understanding were achieved in contextual situations and varied proportions, thus enabling a contribution in the learning of the geometrical concepts studied along with the students who took part in the research. We believe that this work may contribute with reflections about the learning processes, a concern which remained during all the stages of the research, and also that the technical competence along with the knowledge about the constructivist theory will condition the implementation of a new dynamics to the teaching and learning processes. We hope that the present research work may add some contribution to the teaching practice in the context of the teaching of Mathematics for the intermediate levels of the Elementary School
Esta tese se constituiu em uma pesquisa did?tica vinculada ao Programa de P?s-gradua??o em Educa??o da Universidade Federal do Rio Grande do Norte que teve por objetivo abordar ? constru??o dos conceitos geom?tricos de volume do bloco retangular sua ?rea de superf?cie acrescentando um estudo sobre ?rea do c?rculo. Este foi desenvolvido junto a alunos do 6? ano do Ensino Fundamental, em uma escola da rede p?blica de ensino em Natal/RN. A interven??o pedag?gica constou de tr?s momentos: aplica??o de uma avalia??o diagn?stica, instrumento que subsidiou a elabora??o do m?dulo e ensino, ao indicar os conhecimentos pr?vios e fragilidades dos alunos; introdu??o do m?dulo de ensino por atividades e realiza??o de uma avalia??o final atrav?s da qual estabelecemos uma compara??o dos resultados obtidos antes e depois da interven??o de ensino. Os dados obtidos foram analisados qualitativamente mediante estudo de categorias de compreens?o de conceitos matem?ticos, al?m de utilizarmos a an?lise estat?stica validando-a sob o aspecto quantitativo. Com base nos resultados os n?veis de compreens?o relacional e instrumental foram atingidos em situa??es contextuais e propor??es variadas. Acreditamos que este possa contribuir ainda com reflex?es acerca dos processos do conhecer, preocupa??o que permeou todas as etapas da pesquisa. Nossa esperan?a ? que esta pesquisa possa acrescentar alguma contribui??o ao fazer docente no contexto do ensino matem?tico, haja vista concebermos que a compet?ncia t?cnica aliada ao conhecimento sobre a teoria construtivista implementaria uma nova din?mica aos processos de ensino e aprendizagem
APA, Harvard, Vancouver, ISO, and other styles
24

Easterling, Douglas. "Authorial Voice and Agency in the Operas of Richard Strauss| A Study of Self-Referentiality." Thesis, University of Cincinnati, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1561131.

Full text
Abstract:

Self-referentiality plays an important, but often overlooked, role in the works of Richard Strauss. The broad category of self-reference includes works of metafiction, which literary critic Patricia Waugh has defined as fiction that “self-consciously and systematically draws attention to its status as an artifact in order to pose questions about the relationship between fiction and reality” and “explores the theory of writing fiction through the practice of writing fiction.”1 Additionally, Werner Wolf has conceptualized self-reference to include not only “intra-systemic relationship(s),” but also intertextual and intermedial references.2 The relationships and references included in Wolf’s conception of self-reference allow Strauss, his collaborators, and later interpreters to insert their own voices into operas and, arguably, even give themselves agency in the drama. This thesis examines this voice and agency in order to arrive at a deeper understanding of Strauss’s aesthetics and those of his librettists and later interpreters with particular attention to three operas: Ariadne auf Naxos (the 1912 and 1916 versions), Intermezzo (1924), and Capriccio (1942). Additionally, I examine Christof Loy’s 2011 production of Die Frau ohne Schatten (1919) as an example of complex layers self-reference added to a work by a later interpreter and as a suggestion for future avenues of research regarding operatic self-referentiality.

1Patricia Waugh, Metafiction: The Theory and Practice of Self-Conscious Fiction (London: Methuen & Company, 1984), 2. 2Werner Wolf, preface to Self-Reference in Literature and Music, ed. Walter Bernhart and Werner Wolf (Amsterdam: Rudopi, 2010), vii.

APA, Harvard, Vancouver, ISO, and other styles
25

Os?rio, Joana Borges. "Intera??o entre Angiostrongylus cantonensis e Angiostrongylus costaricensis (Nematoda; Metastrongyloidea) com moluscos hospedeiros intermedi?rios e pesquisa de biomarcadores de infec??o." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2017. http://tede2.pucrs.br/tede2/handle/tede/7778.

Full text
Abstract:
Submitted by PPG Zoologia (zoologia-pg@pucrs.br) on 2017-12-15T11:05:20Z No. of bitstreams: 1 Versao Final Tese Oso?rio, Joana.pdf: 10763697 bytes, checksum: 9f6c3be8f4dc2a159d6a919f99d8d23f (MD5)
Approved for entry into archive by Caroline Xavier (caroline.xavier@pucrs.br) on 2017-12-19T19:10:24Z (GMT) No. of bitstreams: 1 Versao Final Tese Oso?rio, Joana.pdf: 10763697 bytes, checksum: 9f6c3be8f4dc2a159d6a919f99d8d23f (MD5)
Made available in DSpace on 2017-12-19T19:16:58Z (GMT). No. of bitstreams: 1 Versao Final Tese Oso?rio, Joana.pdf: 10763697 bytes, checksum: 9f6c3be8f4dc2a159d6a919f99d8d23f (MD5) Previous issue date: 2017-08-18
Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
Angiostrongylus cantonensis and A. costaricensis can accidentally infect humans causing eosinophilic meningitis and abdominal angiostrongyliasis, respectively. Both species have several mollusks as intermediate hosts. Diagnosing the infection requires killing the mollusks, interfering in conservational and population dynamics studies. This work had the objective to demonstrate possible biological markers in infected intermediate hosts, as well as to investigate specific factors related to the parasite-host relationship of mollusks and Angiostrongylus parasites. Mollusks of the Veronicellidae family were infected with A. cantonensis L1. Mucus and feces from these infected and uninfected animals were used for differential expression analysis of proteins using mass spectrometry and the microbiome profile analysis was performed through the 16S gene sequencing, respectively. LC-MS/MS spectrometry analysis showed an increase in F-BAR proteins subfamily and a decrease in the elongation factor of Mycoplasma spp. Microbiome of feces from infected slugs presented a decrease of the Bacteroidetes phylum. We have also analyzed the microbiome profile of Biomphalaria glabrata feces infected with A. cantonensis and Schistosoma mansoni. We could observe a decrease of Vogesella genus. When infected with S. mansoni, a reduction of Mycoplasma and Nitrospira genera and an increase in Niabella genus could be demonstrated. In both infections, decrease of Fluviicola genus and increase of organisms of the Weeksellaceae family were significant. Our results showed that proteins and microorganisms could be promising biomarkers of A. cantonensis infection in intermediate hosts in vivo. During the collection of the mollusks, the invasive species Meghimatium pictum infected with A. costaricensis was found, associated to a case of abdominal angiostrongyliasis, reported in this thesis. Parallel to this study, the postures of Limax sp. and Phyllocaulis sp. were registered to investigate the embryogenesis of these animals. In postures and in decomposing mollusks, mites of the species Caloglyphus berlesei were also identified and this association was observed for the first time.
Angiostrongylus cantonensis e A. costaricensis podem infectar o ser humano acidentalmente causando a meningite eosinof?lica e a angiostrongil?ase abdominal, respectivamente. Ambos possuem diversas esp?cies de moluscos como hospedeiros intermedi?rios. O diagn?stico da infec??o requer a morte destes moluscos, interferindo em estudos de conserva??o e din?mica populacional. Este trabalho teve como objetivo principal encontrar poss?veis marcadores biol?gicos para a infec??o de hospedeiros intermedi?rios, bem como investigar fatores relacionados a rela??o parasito-hospedeiro entre moluscos e Angiostrongylus cantonensis. Exemplares de Phyllocaulis sp. foram infectados com larva de primeiro est?dio de A. cantonensis. O muco e fezes destes animais infectados e n?o infectados foram utilizados para an?lise de express?o diferencial de prote?nas por espectrometria de massas e an?lise do perfil do microbioma por sequenciamento do gene ribossomal 16S, respectivamente. As an?lises de espectrometria por LC-MS/MS mostraram um aumento das prote?nas da subfam?lia F-BAR e diminui??o do fator de alongamento de Mycoplasma spp. O microbioma das fezes de lesmas infectadas apresentou uma diminui??o do filo Bacteroidetes. Tamb?m foram analisados o perfil do microbioma de fezes de Biomphalaria glabrata infectadas com A. cantonensis e Schistosoma mansoni. Nas fezes de caramujos infectados com A. cantonensis foram observados uma diminui??o do g?nero Vogesella; J? quando infectados com S. mansoni, houve redu??o dos g?neros Mycoplasma e Nitrospira e aumento de Niabella. Em ambas as infec??es, a diminui??o de Fluviicola e o aumento de organismos da fam?lia Weeksellaceae foram significativos. Estes resultados mostram que prote?nas e microorganismos s?o promissores biomarcadores da infec??o de A. cantonensis em hospedeiros intermedi?rios, objetivando o desenvolvimento de m?todos diagn?sticos in vivo. Durante as coletas de moluscos, foi encontrada, pela primeira vez, a esp?cie invasora Meghimatium pictum infectada com A. costaricensis associada a um caso de Angiostrongil?ase abdominal, relato que comp?e essa tese. Paralelamente a este estudo, foram acompanhadas as posturas de Limax sp. e Phyllocaulis sp. durante o desenvolvimento embrion?rio, com o objetivo de registrar e investigar a embriog?nese destes hospedeiros. Nas posturas e em moluscos em decomposi??o, foram identificados ?caros da esp?cie Caloglyphus berlesei, em associa??o observada pela primeira vez.
APA, Harvard, Vancouver, ISO, and other styles
26

Rossi, Sandro. "Applicazione del Porsche Quality System: analisi e sviluppo di processi per la riduzione dei difetti al montaggio." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

Find full text
Abstract:
L’obiettivo di questa tesi è fornire un metodo di analisi di una realtà aziendale complessa e implementare il Porsche Quality System mirando alla riduzione dei difetti al montaggio. L’elaborato propone un metodo di applicazione del PQS che mira al miglioramento della circolazione delle informazioni facilitando l’individuazione e la prevenzione dei difetti nel ciclo produttivo. La tesi è articolata in sette capitoli principali: nel primo viene fornita una introduzione al contesto aziendale odierno, al concetto di qualità attuale e ai sistemi di gestione qualità. Nella parte successiva si sviluppa l’analisi delle performance aziendali che ricopre la duplice funzione di base decisionale per lo sviluppo dell’attività e di riferimento per la valutazione dell’efficacia delle azioni intraprese. Il terzo capitolo spiega lo svolgimento dei controlli intermedi durante il ciclo produttivo illustrando i cambiamenti apportati e spiegando il prodotto trattato. Questo capitolo così come i tre seguenti descrivono l’insieme delle misure adottate. Il quarto capitolo è dedicato alla classificazione dei difetti per disporre di dati più precisi che consentano lo sviluppo di contromisure mirate. Il quinto capitolo tratta il nuovo strumento impiegato per fronteggiare le segnalazioni da clienti e commissioning. Il sesto capitolo introduce il passaporto macchina come strumento di raccolta e condivisione delle informazioni riguardanti i singoli prodotti. L’ultimo capitolo si procede a riportare e commentare i risultati ottenuti confrontandoli con quelli dei periodi precedenti.
APA, Harvard, Vancouver, ISO, and other styles
27

Stawström, Annelise. "Studien zur Menschwerdungsthematik in Irmtraud Morgners Leben und Abenteuer der Trobadora Beatriz nach Zeugnissen ihrer Spielfrau Laura : Roman in dreizehn Büchern und sieben Intermezzos." Doctoral thesis, Stockholms universitet, Avdelningen för tyska, 1987. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-83284.

Full text
APA, Harvard, Vancouver, ISO, and other styles
28

Stawström, Anneliese. "Studien zur Menschwerdungsthematik in Irmtraud Morgners "Leben und Abenteuer der Trobadora Beatriz nach Zeugnissen ihrer Spielfrau Laura" : Roman in dreizehn Büchern und sieben Intermezzos /." Stockholm : Almqvist och Wiksell, 1987. http://catalogue.bnf.fr/ark:/12148/cb35515143w.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

Gosson, George Anderson de Oliveira. "Influ?ncia dos intermedi?rios de distribui??o de produtos tur?sticos no processo de decis?o do meio de hospedagem pelo consumidor." Universidade Federal do Rio Grande do Norte, 2009. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12134.

Full text
Abstract:
Made available in DSpace on 2014-12-17T13:53:23Z (GMT). No. of bitstreams: 1 GeorgeAOG.pdf: 5538923 bytes, checksum: 36d483843a1b6d01c32a0cf34fd0f3e3 (MD5) Previous issue date: 2009-09-25
This study examines the complex hotel buyer decision process in front of the tourism distribution channels. Its objective is to describe the influence level of the tourism marketing intermediaries, mainly the travel agents and tour operators, over the hotel decision process by the buyer-tourist. The data collection process was done trough a survey with three hundred brazilian tourists hosted in nineteen hotels of Natal, capital of Rio Grande do Norte, Brazil. The data analysis was done using some multivariate statistic techniques as correlation analysis, multiple regression analysis, factor analysis and multiple discriminant analysis. The research characterizes the hotel services consumers profile and his trip, and identifying the distribution channels used by them. Furthermore, the research verifies the intermediaries influence exercised over hotel buyer decision process, looking for identify causality relations between the influence level and the buyer profile. Verifies that information about hotels available on internet reduces the probability that this influence can be practiced; however it was possible identifying those consumers considers this information complementary and non-substitutes than the information from intermediaries. The characteristics of the data do not allow indentifying the factors that constraint the intermediaries influence neither identifying discriminant functions of the specific distribution channel choice by consumers. The study concludes that consumers don t agree in have been influenced by intermediaries or don t know if they have, still considering important to consult them and internet doesn t substitute their function as information source
O presente estudo trata do complexo processo de decis?o do consumidor de servi?os de hospedagem frente aos canais de distribui??o do turismo. Tem como objetivo descrever o n?vel de influ?ncia dos intermedi?rios de distribui??o de produtos tur?sticos, principalmente das ag?ncias de viagens e das operadoras tur?sticas, exercida sobre o processo de escolha do meio de hospedagem pelo consumidor. A coleta de dados se deu atrav?s da aplica??o de trezentos question?rios em turistas brasileiros, hospedados em dezenove hot?is de Natal, capital do Rio Grande do Norte. A an?lise dos dados desenvolveu-se atrav?s de ferramentas estat?sticas multivariadas como a correla??o entre vari?veis, a regress?o linear m?ltipla, a an?lise fatorial e a an?lise discriminante. A pesquisa caracteriza o perfil dos consumidores de servi?os de hospedagem e sua viagem, al?m de identificar os canais de distribui??o por eles utilizados. Verifica a influ?ncia exercida pelos intermedi?rios sobre os consumidores na escolha do meio de hospedagem, buscando identificar rela??es causais entre esta influ?ncia e as caracter?sticas do consumidor. Constata que as informa??es sobre os meios de hospedagem dispon?veis na internet reduzem a probabilidade de que esta influ?ncia seja exercida, entretanto identifica que os consumidores consideram estas informa??es complementares e n?o substitutas ?quelas fornecidas pelos intermedi?rios. As caracter?sticas dos dados obtidos n?o permitem a identifica??o de fatores que condicionam a influ?ncia dos intermedi?rios, nem a identifica??o de fun??es que discriminem a escolha do consumidor por determinado canal de distribui??o. Conclui que o consumidor n?o concorda em ter sido influenciado pelo intermedi?rio ou n?o tem consci?ncia de que o foi, mesmo considerando que ? importante consult?-los e que a internet n?o substitui sua fun??o de fonte de informa??es
APA, Harvard, Vancouver, ISO, and other styles
30

Kapelinski, Carison. "A ressurrei??o e o estado intermedi?rio segundo Juan Luis Ruiz de La Pe?a : aspectos b?blicos, antropol?gicos e escatol?gicos." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2017. http://tede2.pucrs.br/tede2/handle/tede/7844.

Full text
Abstract:
Submitted by PPG Teologia (teologia-pg@pucrs.br) on 2018-02-05T20:37:20Z No. of bitstreams: 1 Carison_Kapelinski_Dis.pdf: 854758 bytes, checksum: cab68799c670a035c03cd4ff826a9618 (MD5)
Approved for entry into archive by Caroline Xavier (caroline.xavier@pucrs.br) on 2018-02-07T11:59:56Z (GMT) No. of bitstreams: 1 Carison_Kapelinski_Dis.pdf: 854758 bytes, checksum: cab68799c670a035c03cd4ff826a9618 (MD5)
Made available in DSpace on 2018-02-07T12:04:21Z (GMT). No. of bitstreams: 1 Carison_Kapelinski_Dis.pdf: 854758 bytes, checksum: cab68799c670a035c03cd4ff826a9618 (MD5) Previous issue date: 2017-12-05
Con il titolo La Risurrezione e lo stato intermediario secondo Juan Luis Ruiz de La Pe?a: aspetti biblici, antropologici e scatologici, il lavoro si aggira sulla tematica della risurrezione e nel suo contesto principalmente nella visione cristiano cattolica. Questo ? svolto fino dall?Antico Testamento, con citazioni proprie e la visione del tempo nel pensiero biblico. Il principale ? che in tutta la Bibbia non abbiamo una visione dualista del corpo e dell?anima, tanto l?Antico come il nuovo Testamento presentano una visione unitaria dell?uomo. Nel senso antropologico della risurrezione, possiamo dire che l?essere umano ? composto di corpo e anima, i due non si contraddicono o presentano un dualismo. Il corpo presenta come principali caratteristiche: l?essere mortale; l?essere-nel-tempo e l?essere nel mondo. L?anima presenta come principali caratteristiche: l?essere mondano che trascende il mondo; l?essere temporale che trascende il tempo e l?essere mortale che trascende la morte. Il corpo e l?anima presentano una unione sostanziale nella quale sono equilibrati e ugualmente importanti per la salvezza dell?umanit?. Nella scatologia descriviamo che Ges? Cristo ? la causa efficiente della nostra risurrezione e come membri del corpo di Cristo, risorgeremo con Lui. Lui ? la causa e l?esempio della nostra risurrezione, poi risorse con il corpo e l?anima. Secondo la visione del nostro autore, Juan Luiz de La Pe?a, la risurrezione si verifica nell?ora della morte. Per Lui non esiste lo stato intermediario, una pausa di tempo fra la morte e la Parusia, dove aspetteremo la seconda venuta di Ges? Cristo. Questa tesi ? difesa principalmente dall?unione sostanziale fra corpo e anima, non mi ? possibile separare i due nell?ora della morte e della risurrezione. Questa ? la tesi principale che respinge lo stato intermediario, esaurientemente sottolineato nella dissertazione.
Com o t?tulo A Ressurrei??o e o estado intermedi?rio segundo Juan Luis Ruiz de La Pe?a: aspectos b?blicos, antropol?gicos e escatol?gicos, o trabalho versa sobre a tem?tica da ressurrei??o e seu contexto principalmente na vis?o crist? cat?lica. Este ? desenvolvido desde o Antigo Testamento, com cita??es pr?prias e a vis?o do tempo no pensamento b?blico. O principal ? que em toda B?blia n?o h? uma vis?o dualista de corpo e da alma, tanto o Antigo como o Novo Testamento apresentam uma vis?o unit?ria do ser humano. No sentido antropol?gico da ressurrei??o, pode dizer-se que o ser humano ? composto de corpo e alma, os dois n?o se contradizem ou apresentam um dualismo. O corpo apresenta como principais caracter?sticas: o ser mortal; o ser-no-tempo e o ser-no-mundo. A alma apresenta como principais caracter?sticas: o ser mundano que transcende o mundo; ser temporal que transcende o tempo e o ser mortal que transcende a morte. O corpo e alma apresentam uma uni?o substancial em que s?o equilibrados e igualmente importantes para a salva??o da humanidade. Na escatologia descrevemos que Jesus Cristo ? a causa eficiente da nossa ressurrei??o e como membros do corpo de Cristo, ressuscitaremos com ele. Ele ? a causa e o exemplo da nossa ressurrei??o, pois ressuscitou com o corpo e a alma. Segundo a vis?o do nosso autor, Juan Luiz Ruiz de La Pe?a, a ressurrei??o ocorre na hora da morte. N?o existe para ele o estado intermedi?rio, um hiato de tempo entre a morte e a Parusia, onde espera-se a segunda vinda de Jesus Cristo. Esta tese ? defendida principalmente pela uni?o substancial entre corpo e alma, n?o tendo como separar os dois na hora da morte e na ressurrei??o. Esta ? a tese principal que recha?a o estado intermedi?rio, exaustivamente destacada nesta disserta??o.
APA, Harvard, Vancouver, ISO, and other styles
31

Soares, Marcio. "Constru??o e cr?tica da teoria das ideias na filosofia de Plat?o : dos di?logos intermedi?rios ? primeira parte do Parm?nides." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2010. http://tede2.pucrs.br/tede2/handle/tede/2840.

Full text
Abstract:
Made available in DSpace on 2015-04-14T13:55:03Z (GMT). No. of bitstreams: 1 422981.pdf: 1671462 bytes, checksum: 6d8a2585f3348594d2b5bd3cb13b8e33 (MD5) Previous issue date: 2010-03-04
Plat?o ? conhecido, sobretudo, entre outros aspectos de sua filosofia, pela sua teoria das Ideias. Tal teoria encontra-se, em sua melhor formula??o, nos di?logos da fase intermedi?ria da produ??o liter?ria do Fil?sofo, sendo que os mais expoentes s?o: a Rep?blica, o F?don, o Fedro, o Banquete e o Timeu. Contudo, o Parm?nides, di?logo que est? no limiar entre as fases intermedi?ria e tardia da obra de Plat?o, apresenta s?rias cr?ticas ? teoria das Ideias, especialmente em sua primeira parte (127d6-135b4). O problema que se levanta, a partir do Parm?nides, e que divide int?rpretes e estudiosos do pensamento de Plat?o, pode ser expresso em tr?s quest?es: primeiro, as cr?ticas, presentes na primeira parte do Parm?nides, s?o internas ou externas ? teoria das Ideias? Segundo, tais cr?ticas s?o letais ? teoria das Ideias, tal como ela se encontra formulada nos di?logos intermedi?rios? Por fim, Plat?o teria ou n?o abandonado a teoria das Ideias ap?s o Parm?nides? No presente trabalho, partindo de uma reconstru??o e an?lise da teoria das Ideias nos di?logos intermedi?rios, especialmente no F?don e na Rep?blica (primeira parte de nosso texto), pretendemos demonstrar os princ?pios te?ricos fundamentais que jazem na base da constru??o de tal teoria, a saber: a estrutura do um sobre o m?ltiplo, o princ?pio da homon?mia, o dualismo ontol?gico e a hip?tese da participa??o. Na segunda parte de nosso texto, reconstru?mos e analisamos, detalhadamente, as seis obje??es cr?ticas apontadas ? teoria das Ideias na primeira parte do Parm?nides. Pretendemos demonstrar, assim, que as cr?ticas almejam exatamente aqueles quatro princ?pios te?ricos fundamentais, rec?m mencionados acima, presentes na base da constru??o da teoria das Ideias nos di?logos intermedi?rios. Portanto, o escopo de nosso trabalho ? a demonstra??o de que as cr?ticas ? teoria das Ideias, presentes na primeira parte do Parm?nides, s?o internas ? pr?pria teoria, bem como letais ? mesma, conforme sua formula??o nos di?logos intermedi?rios. Dessa forma, demonstrado que Plat?o ? cr?tico de si mesmo no Parm?nides (i.e., cr?tico de sua pr?pria teoria das Ideias), abre-se a possibilidade de uma mudan?a substancial na ontologia plat?nica presente nos di?logos escritos posteriormente ao Parm?nides, especialmente no Sofista e no Filebo frisamos que a demonstra??o positiva de uma nova ontologia plat?nica, nesses di?logos posteriores ao Parm?nides, n?o ser? feita neste trabalho. Dito de outra forma, ? nossa hip?tese que Plat?o abandona a teoria das Ideias tal como ela fora constru?da nos di?logos intermedi?rios (especialmente no F?don e na Rep?blica), haja vista as aporias insol?veis que tal teoria comporta, sobretudo em rela??o ? hip?tese da participa??o e ao dualismo ontol?gico, conforme o pr?prio Fil?sofo nos faz ver na primeira parte do seu di?logo Parm?nides.
APA, Harvard, Vancouver, ISO, and other styles
32

Rodrigues, Filho Auri Luiz Morais. "A influ?ncia da ger?ncia intermedi?ria na performance organizacional : um estudo multisetorial em empresas de alta performance do Rio Grande do Sul." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2007. http://tede2.pucrs.br/tede2/handle/tede/5532.

Full text
Abstract:
Made available in DSpace on 2015-04-14T14:51:56Z (GMT). No. of bitstreams: 1 399518.pdf: 1511605 bytes, checksum: cf56dda7c1443c43bb0e83b9ca46c12e (MD5) Previous issue date: 2007-11-28
O ambiente organizacional est? se tornando cada vez mais vol?til, barreiras comerciais est?o desaparecendo e a competi??o est? crescendo fortemente. Em tais ambientes, a necessidade por bons gestores ? mais importante do que nunca. Gestores de todos os n?veis mais especialmente aqueles intermedi?rios est?o constantemente sendo lembrados pela sua fun??o essencial e papel cr?tico na influ?ncia estrat?gica que exercem sobre a performance e a renova??o organizacional. Neste contexto, o objetivo desta disserta??o ? analisar a influ?ncia da ger?ncia intermedi?ria (GI) na performance organizacional. Desenvolveu-se 1 pesquisa de campo em 2 fases: a Fase Preparat?ria com 15 entrevistados, sendo 5 gestores de RH de empresas de alta performance, 5 acad?micos e 5 headhunters, que apresentou um construto validado sobre os atributos e pap?is do gerente que influenciam a GI; e a Fase Final que utilizou o estudo de m?ltiplos casos (3) para avaliar como a performance da GI influencia a performance organizacional. Os resultados demonstraram que as fun??es que afetam a performance da ger?ncia intermedi?ria s?o: decis?es r?pidas e assertivas, dar o exemplo e criar ambiente desafiadores, atitudes pr?-ativas e discuss?o estrat?gica. A partir disso surgiram as fun??es que influenciam a performance organizacional, que s?o: gest?o de equipes, gest?o de processos e foco em resultado. Ao final apresenta-se um espa?o relacional da ger?ncia intermedi?ria com a performance organizacional, denominado Segredo do Cofre, que traz as explica??es sobre as rela??es entre as dimens?es, categorias e fun??es dentro do ambiente empresarial.
APA, Harvard, Vancouver, ISO, and other styles
33

Souza, Ana Karolina Bezerra de. "Sinteriza??o de Ce1-XEuXO2-(X/2) para aplica??o como eletr?lito s?lido em c?lulas a combust?vel de temperaturas intermedi?rias." Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12708.

Full text
Abstract:
Made available in DSpace on 2014-12-17T14:06:57Z (GMT). No. of bitstreams: 1 AnaKBS_DISSERT.pdf: 2809247 bytes, checksum: 1069d6e1b2ca10f4084e4b1f2fd44c9b (MD5) Previous issue date: 2010-12-13
Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior
Given the environmental concern over global warming that occurs mainly by emission of CO2 from the combustion of petroleum, coal and natural gas research focused on alternative and clean energy generation has been intensified. Among these, the highlight the solid oxide fuel cell intermediate temperature (IT-SOFC). For application as electrolyte of the devices doped based CeO2 with rare earth ions (TR+ 3) have been quite promising because they have good ionic conductivity and operate at relatively low temperatures (500-800 ? C). In this work, studied the Ce1-xEuxO2-δ (x = 0,1, 0,2 and 0,3), solid solutions synthesized by the polymeric precursor method to be used as solid electrolyte. It was also studied the processing steps of these powders (milling, compaction and two step sintering) in order to obtain dense sintered pellets with reduced grain size and homogeneous microstructure. For this, the powders were characterized by thermal analysis, X-ray diffraction, particle size distribution and scanning electrons microscopy, since the sintered samples were characterized by dilatometry, scanning electrons microscopy, density and grain size measurements. By x-ray diffraction, it was verified the formation of the solid solution for all compositions. Crystallites in the nanometric scale were found for both sintering routes but the two step sintering presented significant reduction in the average grain size
Diante da preocupa??o ambiental com o aquecimento global que ocorre principalmente pelas emiss?es de CO2 resultante da queima de combust?veis derivados do petr?leo, carv?o e g?s natural, as pesquisas voltadas para formas alternativas e n?o poluentes de gera??o de energia v?m se intensificando. Entre essas, destacam-se as c?lulas a combust?vel de ?xido s?lido de temperatura intermedi?ria (IT-SOFC). Para aplica??o como eletr?lito deste tipo de dispositivo, as cer?micas ? base de CeO2 dopadas com ?ons de terras raras (TR+3) t?m se mostrado bastante promissoras pelo fato de possu?rem boa condutividade i?nica e operarem em temperaturas relativamente baixas (500-800?C). Neste trabalho, foram estudadas cer?micas de c?ria dopada com eur?pio, sintetizadas pelo m?todo dos precursores polim?ricos para uso como eletr?lito s?lido. Foram estudadas tamb?m as etapas de processamento desses p?s (moagem, compacta??o e sinteriza??o convencional e por duas etapas), visando ? obten??o de produtos sinterizados de elevadas densidades e microestrutura homog?nea e reduzido tamanho de gr?o. Para isto, os p?s foram caracterizados por an?lise termogravim?trica, difra??o de raios X, granulometria, e MEV, j? as amostras sinterizadas foram caracterizadas por dilatometria, MEV, medidas de densidades e medidas de tamanho de gr?o. Os resultados de difra??o de raios X indicaram a forma??o de solu??es s?lidas com estrutura c?bica do tipo fluorita apresentando cristalitos nanom?tricos para todas as composi??es em estudo. Ambas as rotas de sinteriza??o mostraram-se eficientes para a produ??o de cer?micas com densidades adequadas para aplica??o como eletr?litos s?lidos em c?lula a combust?vel, mas a sinteriza??o em duas etapas apresentou significativa redu??o do tamanho m?dio de gr?os
APA, Harvard, Vancouver, ISO, and other styles
34

Pereira, Laur?nia Martins. "S?ntese citrato-hidrotermal e caracteriza??o eletroqu?mica de LSCF para aplica??o como catodo em c?lula a combust?vel de temperatura intermedi?ria." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15686.

Full text
Abstract:
Made available in DSpace on 2014-12-17T14:58:15Z (GMT). No. of bitstreams: 1 LaureniaMPG_DISSERT.pdf: 2747629 bytes, checksum: a8b9f0209bf9acabd46832a08265ed7f (MD5) Previous issue date: 2012-05-08
The lanthanum strontium cobalt iron oxide (La1-xSrxCo1-yFeyO3 LSCF) is the most commonly used material for application as cathode in Solid Oxide Fuel Cells (SOFCs), mainly due to their high mixed ionic electronic conductivity between 600 and 800?C. In this study, LSCF powders with different compositions were synthesized via a combination between citrate and hydrothermal methods. As-prepared powders were calcined from 700 to 900?C and then characterized by X-ray fluorescence, X-ray diffraction, thermal analyses, particle size analyses, nitrogen adsorption (BET) and scanning electronic microscopy. Films of composition La0,6Sr0,4Co0,2Fe0,8O3 (LSCF6428), powders calcined at 900?C, were screen-printed on gadolinium doped ceria (CGO) substrates and sintered between 1150 and 1200?C. The effects of level of sintering on the microstructure and electrochemical performance of electrodes were evaluated by scanning electronic microscopy and impedance spectroscopy. Area specific resistance (ASR) exhibited strong relation with the microstructure of the electrodes. The best electrochemical performance (0.18 ohm.cm2 at 800?C) was obtained for the cathode sintered at 1200?C for 2 h. The electrochemical activity can be further improved through surface activation by impregnation with PrOx, in this case the electrode area specific resistance decreases to values as low as 0.12 ohm.cm2 (800?C), 0.17 ohm.cm2 (750?C) and 0.31 ohm.cm2 (700?C). The results indicate that the citrate-hydrothermal method is suitable for the attainment of LSCF particulates with potential application as cathode component in intermediate temperature solid oxide fuel cells (IT-SOFCs)
A cobaltita de lant?nio dopada com estr?ncio e ferro (La1-xSrxCo1-yFeyO3 LSCF) ? comumente o material mais utilizado para aplica??o como catodo em c?lula a combust?vel de ?xido s?lido (SOFC), principalmente devido a sua elevada condutividade mista i?nica e eletr?nica entre 600 e 800?C. Neste trabalho, p?s de LSCF de diferentes composi??es foram sintetizados via uma combina??o entre os m?todos citrato e hidrotermal. Os p?s como obtidos foram calcinados entre 700 e 900 ?C e caracterizados por fluoresc?ncia de raios X, difratometria de raios X, an?lises t?rmicas, distribui??o de tamanho de part?cula, adsor??o gasosa (BET) e microscopia eletr?nica de varredura. Filmes de composi??o La0,6Sr0,4Co0,2Fe0,8O3 (LSCF6428) foram obtidos por serigrafia de p?s calcinados a 900?C. Os filmes foram depositados sobre substratos de c?ria dopada com gadol?nia (CGO) e ent?o sinterizados entre 1150 e 1200?C. Os efeitos do patamar de sinteriza??o na microestrutura e no desempenho eletroqu?mico dos eletrodos foram avaliados por microscopia eletr?nica de varredura e espectroscopia de imped?ncia. A resist?ncia espec?fica por ?rea apresentou forte rela??o com a microestrutura dos eletrodos. O melhor desempenho eletroqu?mico (0,18 ohm.cm2 a 800?C) foi obtido para o catodo sinterizado a 1200?C por 2 horas. A atividade eletroqu?mica pode ainda ser melhorada mediante ativa??o superficial por impregna??o com PrOx, neste caso a resist?ncia espec?fica por ?rea do eletrodo diminui para valores t?o baixos como 0,12 ohm.cm2 (800?C), 0,17 ohm.cm2 (750?C) e 0,31 ohm.cm2 (700?C). Os resultados obtidos indicam que o m?todo citrato-hidrotermal ? adequado para a prepara??o de particulados de LSCF com potencial aplica??o como catodo em c?lulas a combust?vel de ?xido s?lido de temperatura intermedi?ria (600-800?C)
APA, Harvard, Vancouver, ISO, and other styles
35

Costa, Maria Jos? Fonseca. "S?ntese de catalisadores nanoporosos na aus?ncia total e parcial de direcionadores org?nicos para pir?lise catal?tica de ?leos pesados e intermedi?rios." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17786.

Full text
Abstract:
Made available in DSpace on 2014-12-17T15:42:28Z (GMT). No. of bitstreams: 1 MariaJFC_TESE.pdf: 4007652 bytes, checksum: 7bb363c54641679d79bbff5c76de539f (MD5) Previous issue date: 2013-06-03
Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior
The processing of heavy oil produced in Brazil is an emergency action and a strategic plan to obtain self-sufficiency and economic surpluses. Seen in these terms, it is indispensable to invest in research to obtain new catalysts for obtaining light fraction of hydrocarbons from heavy fractions of petroleum. This dissertation for the degree of Doctor of Philosophy reports the materials preparation that combine the high catalytic activity of zeolites with the greater accessibility of the mesoporosity, more particularly the HZSM-5/MCM-41 hybrid, done by synthesis processes with less environmental impact than conventional ones. Innovative methodologies were developed for the synthesis of micro-mesoporous hybrid material by dual templating mechanism and from crystalline zeolitic aluminosilicate in the absence of organic template. The synthesis of hybrid with pore bimodal distribution took place from one-single organic directing agent aimed to eliminate the use of organic templates, acids of any kind or organic solvents like templating agent of crystalline zeolitic aluminosilicate together with temperature-programmed microwave-assisted, making the experimental procedures of preparation most practical and easy, with good reproducibility and low cost. The study about crystalline zeolitic aluminosilicate in the absence of organic template, especially MFI type, is based on use of H2O and Na+ cation playing a structural directing role in place of an organic template. Advanced characterization techniques such as X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Highresolution Transmission Electron Microscopy (HRTEM), Adsorption of N2 and CO2, kinetic studies by Thermogravimetric Analysis (TGA) and Pyrolysis coupled to Gas Chromatography/Mass Spectrometry (Pyrolysis-GC/MS) were employed in order to evaluate the synthesized materials. Achieve the proposed objectives, has made available a set of new methodologies for the synthesis of zeolite and hybrid micro-mesoporous material, these suitable for catalytic pyrolysis of heavy oils aimed at producing light fraction
O processamento do petr?leo pesado produzido no Pa?s ? uma a??o emergencial e estrat?gica para obter a auto-sufici?ncia e super?vits econ?micos. Neste sentido, ? indispens?vel o investimento em pesquisas de novos catalisadores para obten??o de derivados leves a partir de fra??es pesadas do petr?leo. O trabalho de doutorado aqui reportado dedicouse ? prepara??o de materiais que combinem, numa ?nica estrutura, a elevada atividade catal?tica de ze?litas, com melhor acessibilidade de materiais mesoporosos, como a estrutura h?brida HZSM-5/MCM-41, utilizando processos de s?ntese com menor impacto ambiental que os convencionais. Metodologias inovadoras foram desenvolvidas para a s?ntese do catalisador h?brido micro-mesoporoso ou ze?lito-mesoporoso por mecanismo de direcionamento estrutural via duplo agente diretor org?nico e tamb?m a partir de estrutura zeol?tica sintetizada na aus?ncia total de direcionador org?nico. Esse ?ltimo, tamb?m chamado de s?ntese do h?brido com distribui??o bimodal de poros a partir de um ?nico agente diretor org?nico, visou eliminar o uso dos direcionadores org?nicos, ?cidos de qualquer natureza ou solventes org?nicos como molde estrutural da estrutura zeol?tica em conjunto com o m?todo hidrot?rmico assistido por irradia??o via micro-ondas, tornando o procedimento experimental de prepara??o pr?tico e simples, com boa reprodutibilidade e menor custo. A metodologia de prepara??o da ze?lita MFI do tipo ZSM-5 utiliza H2O e c?tions Na+ no papel de direcionamento estrutural e compensa??o de cargas na estrutura. T?cnicas relevantes de caracteriza??o, como Difra??o de Raios-X (XRD), Espectroscopia no Infravermelho com Transformada de Fourier (FTIR), Microscopia Eletr?nica de Varredura (SEM), Microscopia Eletr?nica de Transmiss?o de Alta Resolu??o (HRTEM), Adsor??o de N2 e CO2, estudos cin?ticos via An?lises Termogravim?tricas (TGA) e Pir?lise acoplada ? Cromatografia Gasosa/Espectrometria de Massas (Pyrolysis-GC/MS), foram empregadas no intuito de avaliar os materiais sintetizados. Alcan?ados os objetivos propostos, disponibilizou-se um conjunto de novas metodologias para s?ntese de catalisadores zeol?ticos e h?bridos micromesoporosos, estes adequados para pir?lise catal?tica de ?leos pesados visando ? produ??o de derivados leves
APA, Harvard, Vancouver, ISO, and other styles
36

Gagliardi, Giacomo. "Il "crowdshipping" per le consegne dell'ultimo miglio." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

Find full text
Abstract:
Il “crowdshipping” è un nuovo metodo di spedizione merci a domicilio nel quale, in aggiunta ai classici veicoli di trasporto, persone comuni si rendono disponibili, in cambio di un compenso, a effettuare consegne ad altri individui compiendo una piccola deviazione dal loro tragitto. Lo sviluppo dell’e-commerce, la continua crescita di consegne dell’ultimo miglio e un mercato sempre più orientato alle spedizioni in giornata, se non, anche, entro l’ora (si parla in questo caso di “q- commerce”) hanno trovato una possibile soluzione nella consegna tramite la folla. La spedizione in “crowdsourcing” offre sia benefici all’azienda, in termini di riduzione dei costi, maggiore flessibilità e velocità di consegna, sia vantaggi per la comunità, grazie a una riduzione del traffico urbano e dell’inquinamento dell’aria. In questo lavoro di tesi è stato effettuato un sondaggio, rivolto principalmente a un campione di studenti universitari, per valutare lo stato attuale di predisposizione che si ha all’uso del “crowdshipping” e capire quali caratteristiche siano maggiormente prese in considerazione dagli utenti. Dopodiché viene proposto un sistema di consegna a domicilio su due livelli per la città di Bologna. Si considera la presenza di armadietti automatici sul territorio nei quali i corrieri occasionali (OD) possono prelevare i pacchi per poi consegnarli ai clienti. Per rendere disponibili i prodotti, gli armadietti vengono precedentemente riforniti da vettori professionisti che, inoltre, effettuano la consegna della merce a quei clienti che non possono essere serviti dagli OD. Si propongono, principalmente, due differenti modelli matematici che descrivono il sistema considerato. L’obiettivo è, rispettivamente, la riduzione dei costi complessivi della rete di trasporto e la riduzione delle emissioni di CO2 prodotte.
APA, Harvard, Vancouver, ISO, and other styles
37

Dutra, Bibiana Kaiser. "Estudo do metabolismo intermedi?rio e da lipoperoxida??o de Hyalella curvispina e Hyalella pleoacuta (crustacea, amphipoda, dogielinotidae) e padroniza??o destas esp?cies como bioindicadores ambientais." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2007. http://tede2.pucrs.br/tede2/handle/tede/285.

Full text
Abstract:
Made available in DSpace on 2015-04-14T13:09:50Z (GMT). No. of bitstreams: 1 389728.pdf: 761156 bytes, checksum: 5bb03734c3b09a4ef16b93cf3d3d2546 (MD5) Previous issue date: 2007-03-23
Segundo a Environmental Protection Agency (EPA) para um organismo ser selecionado para testes de toxicol?gicos ? necess?rio que se conhe?a: a distribui??o da esp?cie, sua localiza??o dentro da estrutura tr?fica, sua biologia, seus h?bitos nutricionais, sua fisiologia e por fim que sejam desenvolvidas t?cnicas de manuten??o de cultivo destes organismos em laborat?rio. Visando estas regras este trabalho foi dividido em quatro partes: No primeiro trabalho o amphipoda Hyalella curvispina foi coletado mensalmente de setembro 2003 a agosto 2005, na lagoa de Gentil, Tramanda?, Rio Grande do Sul, Brasil, e diferentes par?metros bioqu?micos e a lipoperoxida??o foram medidos. Os resultados sugerem que estes animais armazenam e degradam de forma sazonal as reservas energ?ticas investigadas. Durante o ver?o, o glicog?nio, os lip?dios totais, e os triglicer?deos foram armazenados, e utilizados durante o outono e o inverno. As f?meas armazenam prote?nas na primavera e usam no ver?o; enquanto que os machos armazenam as prote?nas na primavera e usam no inverno. Os n?veis do lipoperoxida??o durante o ano diferiram entre f?meas e machos. Estas varia??es podem estar relacionadas aos fatores bi?ticos (ex. per?odo reprodutivo) e aos fatores abi?ticos (ex. temperatura de ?gua, salinidade). No segundo trabalho foi comparado o efeito de varia??es sazonais no metabolismo energ?tico e nos n?veis de lipoperoxida??o de duas esp?cies simp?tricas de amphipoda, H. pleoacuta e H. castroi. Os animais foram coletados mensalmente de abril 2004 a mar?o 2006, no Vale das Trutas no munic?pio de S?o Jos? dos Ausentes. As an?lises estat?sticas revelaram diferen?as sazonais significativas na composi??o bioqu?mica, bem como, diferen?as entre sexos e esp?cies. Os fatores ambientais (ex., condi??es tr?ficas) e a reprodu??o pareceram ser os principais processos que influenciam os padr?es sazonais da composi??o bioqu?mica. No terceiro trabalho n?s comparamos varia??es no metabolismo energ?tico, nos n?veis de lipoperoxida??o e de par?metros reprodutivos de duas esp?cies de amphipoda, H. pleoacuta e H. curvispina mantido com duas dietas diferentes. Os animais foram coletados no inverno de 2004 e de 2005. No laborat?rio, os animais foram mantidos submersos em aqu?rios sob circunst?ncias controladas, alimentados ad libitum por 30 dias com dieta 1 (somente macr?fitas) ou dieta 2 (macr?fitas e ra??o). A an?lise estat?stica revelou diferen?as significativas na composi??o bioqu?mica entre os sexos e as dietas. A dieta 1 mimetizou a restri??o cal?rica, pois ocorreu uma deple??o do glicog?nio e das prote?nas totais nas duas esp?cies e sexos, este fato ? refor?ado por uma diminui??o nos n?veis do lipoperoxida??o. Nos amphipoda alimentados com a dieta 2, estes padr?es metab?licos foram revertidos. A dieta 2 forneceu informa??es valiosas a respeito da manuten??o adequada em laborat?rio para experimentos toxicol?gicos. As exig?ncias cal?ricas das esp?cies foram supridas somente com a dieta 2, que forneceu mais carboidratos, prote?nas e lip?dios. O quarto estudo investigou os efeitos do Carbofuran no metabolismo energ?tico, na lipoperoxida??o e na atividade do Na+/K+ATPase, e em par?metros reprodutivos nos amphipoda H. pleoacuta e H.curvispina. Os animais foram coletados no inverno de 2006. No laborat?rio, os animais foram mantidos submersos em aqu?rios sob circunst?ncias controladas e expostos ao Carbofuran numa dose de 5 ou 50μg/L por um per?odo de 7 dias. A an?lise estat?stica revelou que o pesticida induz diminui??es significativas no glicog?nio, nas prote?nas, nos lip?dios, nos triglicer?deos, e na Na+/K+ATPase, bem como, um aumento significativo nos n?veis de lipoperoxida??o. O estudo dos par?metros bioqu?micos parece ser promissor, a fim de avaliar e predizer os efeitos dos pesticidas em organismos do n?o-alvo. Os resultados sugerem tamb?m que os par?metros reprodutivos (forma??o dos pares, f?meas ov?geras e n?mero m?dio dos ovos) podem ser crit?rios sens?veis para avaliar efeitos ecotoxicol?gicos. Al?m disso, H. pleoacuta e H. curvispina s?o organismos apropriados para o uso em testes de toxicidade, e n?s sugerimos que s?o esp?cies sens?veis que poderiam ser usadas para monitorar estudos
APA, Harvard, Vancouver, ISO, and other styles
38

Persch, Tanilene Sotero Pinto. "Efeito dos herbicidas Roundup?, Primoleo? e Facet? sobre o metabolismo intermedi?rio, o estresse oxidativo e a sobreviv?ncia de Rhamdia quelen em diferentes fases de desenvolvimento." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2015. http://tede2.pucrs.br/tede2/handle/tede/6048.

Full text
Abstract:
Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2015-05-22T12:04:56Z No. of bitstreams: 1 469226 - Texto Completo.pdf: 1935172 bytes, checksum: ed87439b55bcfab4db835f100fcb8202 (MD5)
Made available in DSpace on 2015-05-22T12:04:56Z (GMT). No. of bitstreams: 1 469226 - Texto Completo.pdf: 1935172 bytes, checksum: ed87439b55bcfab4db835f100fcb8202 (MD5) Previous issue date: 2015-03-19
Agrochemicals are water contaminants, resulting from anthropogenic activities, having as main objective the elimination of some form of life and, therefore, being harmful even to non-target species. It is utmost importance the standardization and the use of bioindicators, especially of native organisms, besides the development of toxicity tests or bioassays to assess the impacts of the agroindustrial activities. Thus, it was sought to identify possible biochemical changes, to evaluate the oxidative balance and the survival of individuals of catfish Rhamdia quelen, in two aged groups, facing acute toxicity tests with different concentrations of Roundup? (glyphosate: 18, 36, 72 and 144?g/L), Primoleo? (atrazine: 2.5, 5, 10 and 15?g/L) and Facet? (quinclorac: 1.75, 3.5, 7 and 14?g/L). The procedures were performed with fingerlings (individuals with total length between 6 and 8 cm) and sexually newly matured individuals, called young-adult (with total length of more than 18 cm). All the animals were purchased from a farm and were kept for 7 days in a period called Acclimatization. After, agrochemicals were applied individually, at concentrations similar to those reported for the natural environment and allowed by law in our country. After 7 days of exposuring to the agrochemical, the animals were euthanized by cervical spinal cord section and the gill, liver, kidney and muscle tissues were separated and frozen at -20?C. In fingerlings, pools were performed, grouping the tissue from three individuals, due to their low weight; the tissues from young-adult were analyzed individually. It was estimated the effect of this agrochemicals on intermidiate metabolism, by determining the glycogen levels, total proteins, total lipids and triacylglycerols, on the two length ranges. It was also evaluated the effect of this agrochemicals on the oxidative status determining the activity of superoxide dismutase (SOD) and catalase (CAT), and levels of lipid peroxidation (TBARS) in all the tissues from the animals on the two length ranges. The experimental procedures and the biochemical readings were performed in triplicate. It was also observed the effect of this agrochemicals on the survival of the individuals in experimental culture conditions, in both aged groups, searching for confirmation of sublethallity of determined concentrations for testing. The results are organized into three articles. The first is entitled Metabolic parameters and oxidative balance Rhamdia quelen changed after exposure to herbicides of rice crops (Roundup?, Primoleo? and Facet?), for submission to the journal Archives of Environmental Contamination and Toxicology, which presents the results obtained for the metabolism and the oxidative balance of fingerlings, which seem to have been able to modulate their enzymes as not to suffer oxidative damage front to Roundup? herbicide (by increasing CAT) and Primoleo? (without changes in SOD and CAT). The Facet? led to the increase of lipid peroxidation, especially in the gill, kidney and muscle tissues, despite the higher SOD, prejudicing the species significantly. The biochemical composition tissue of juveniles of R. quelen changed significantly, which may cause damages, mainly in the gill tissue, leading to a loss of homeostasis and it may result the death of the animals and/or the decrease of the reproductive success, when chronically exposed to these substances and concentrations. The second article entitled Metabolic changes in silver catfish exposed to herbicide of rice crop Roundup?, Primoleo? and Facet?, is concerned to the young-adult metabolism, for submission to the journal Environmental Pollution. There were changes in the metabolic profile of all sampled tissues, showing a differentiated tissue responsiveness, being the gills and the kidneys the most affected organs by the exposure to agrochemicals. The herbicide Facet? changed the gill tissue significantly, and it was suggested that the relevant Brazilian agencies regulate its use in protective standards for the environment. Finally, the third manuscript Article Oxidative status and lipid peroxidation determined by the exposure to agrochemicals Roundup?, Primoleo? and Facet? in Rhamdia quelen approaches the oxidative stress suffered by young-adults to be submitted to the journal Ecotoxicology and Environmental Safety. In this work the liver and kidney tissues were the most affected, and it can be infered that the Facet? (quinclorac) was the most toxic herbicide to the sexually newly matured individuals, followed by Primoleo? (atrazine) and after by Roundup? (glyphosate). One can suggest, from this set of results, a review of the current legislation in our country, to include products with the quinclorac active principle into the toxic list to be controlled in the natural environment.
Os agroqu?micos s?o contaminantes aqu?ticos decorrentes das atividades antropog?nicas, tendo como principal objetivo a elimina??o de alguma forma de vida, sendo, portanto, lesivos inclusive ? esp?cies n?o-alvo. ? de extrema import?ncia a padroniza??o e a utiliza??o de esp?cies bioindicadoras, em especial de organismos aut?ctones, al?m do desenvolvimento de testes de toxicidade ou bioensaios para avalia??o dos impactos decorrentes das atividades agroindustriais. Assim, buscou-se verificar poss?veis altera??es bioqu?micas, avaliar o balan?o oxidativo e a sobreviv?ncia de indiv?duos do jundi? Rhamdia quelen, em duas faixas et?rias, frente a testes de toxicidade aguda com diferentes concentra??es de Roundup? (glifosato: 18, 36, 72 e 144?g/L), Primoleo? (atrazina: 2,5, 5, 10 e 15?g/L) e Facet? (quinclorac: 1,75, 3,5, 7 e 14?g/L). Foram realizados os procedimentos com alevinos (indiv?duos com comprimento total entre 6 e 8 cm) e indiv?duos rec?m-maturados sexualmente, chamados alevin?es (com comprimento total superior a 18 cm). Todos os animais foram comprados de uma piscicultura e permaneceram por 7 dias em um per?odo denominado Aclimata??o. Ap?s, os agroqu?micos foram aplicados individualmente, em concentra??es semelhantes ?s relatadas para o ambiente natural e permitido pela legisla??o vigente em nosso pa?s. Ap?s 7 dias de exposi??o ao agroqu?mico, os animais foram eutanasiados por sec??o de medula cervical, e foram separados os tecidos branquial, hep?tico, renal e muscular, sendo congelados a -20?C. Nos alevinos, foram realizados agrupamentos dos tecidos de tr?s indiv?duos, devido seu baixo peso; os tecidos dos alevin?es foram analisados individualmente. Estimou-se o efeito destes agroqu?micos sobre o metabolismo intermedi?rio, atrav?s da determina??o dos n?veis de glicog?nio, prote?nas totais, lip?deos totais e triacilglicer?is, nas duas faixas de comprimento. Avaliouse tamb?m o efeito destes agroqu?micos sobre o status oxidativo determinando a atividade das enzimas super?xido dismutase (SOD) e catalase (CAT), al?m dos n?veis de lipoperoxida??o (TBARS) nos quatro tecidos dos animais, das duas faixas de comprimento. Os procedimentos experimentais e as leituras biqu?micas foram realizados em triplicata. Ainda observou-se o efeito destes sobre a sobreviv?ncia dos indiv?duos em condi??es de cultivo experimental, nas duas faixas et?rias, buscando a confirma??o da subletalidade das concentra??es determinadas para os testes. Os resultados est?o organizados em tr?s artigos, sendo o primeiro intitulado Par?metros metab?licos e balan?o oxidativo de Rhamdia quelen alterado frente ? exposi??o a herbicidas de lavoura de arroz (Roundup?, Primoleo? e Facet?), para a submiss?o ? Revista Archives of Environmental Contamination and Toxicology, onde s?o apresentados os resultados obtidos para o metabolismo e o balan?o oxidativo dos alevinos, que parecem ter conseguido modular suas enzimas a ponto de n?o sofrerem dano oxidativo frente aos herbicidas Roundup? (pelo aumento da CAT) e Primoleo? (sem altera??es nas enzimas SOD e CAT). O Facet? provocou o aumento da lipoperoxida??o, principalmente nos tecidos branquial, renal e muscular, apesar da eleva??o da SOD, agredindo significativamente a esp?cie. A composi??o bioqu?mica tecidual dos juvenis de R. quelen sofreu altera??es significativas, podendo acarretar a danos principalmente no tecido branquial, conduzindo ? perda da homeostase e podendo acarretar na morte dos animais e/ou a diminui??o do sucesso reprodutivo, quando expostos cronicamente a estas subst?ncias e nestas concentra??es. O 2? artigo, intitulado Altera??es metab?licas em jundi?s expostos aos herbicidas de lavoura de arroz Roundup?, Primoleo? e Facet?, versa sobre o metabolismo de alevin?es, para submiss?o ? Revista Environmental Pollution. Houve altera??es no perfil metab?lico de todos os tecidos amostrados, evidenciando uma responsividade tecidual diferenciada, sendo as br?nquias e os rins os ?rg?os mais afetados com a exposi??o aos agroqu?micos. O herbicida Facet? alterou significativamente o tecido branquial, sendo sugerido que os ?rg?os brasileiros competentes regulamentem o seu uso em normas protetivas ao meio ambiente. Por fim, o manuscrito do artigo Status oxidativo e lipoperoxida??o determinados pela exposi??o aos agroqu?micos Roundup?, Primoleo? e Facet? em Rhamdia quelen, aborda o estresse oxidativo sofrido pelos alevin?es, a ser submetido ? Revista Ecotoxicology and Environmental Safety. Neste trabalho os tecidos hep?tico e renal foram os mais afetados, e podemos inferir que o Facet? (quinclorac) foi o agroqu?mico mais t?xico aos indiv?duos rec?m-maturados sexualmente, seguido do Primoleo? (atrazina) e ap?s o Roundup? (glifosato). Podese, a partir deste conjunto de resultados, sugerir uma revis?o na legisla??o vigente em nosso pa?s, a fim de incluir produtos com o princ?pio ativo quinclorac na lista de t?xicos a serem controlados no ambiente natural.
APA, Harvard, Vancouver, ISO, and other styles
39

Esteve, i. Girbés Sergi. "Estudi petrogenètic del complex intermedi-màfic-ultramàfic de Susqueda (Serralada Prelitoral Catalana). Implicacions en la gènesi i evolució del plutonisme hercinià del NE de la Península Ibèrica." Doctoral thesis, Universitat de Barcelona, 2021. http://hdl.handle.net/10803/672447.

Full text
Abstract:
El Complex de Susqueda constitueix el major aflorament de roques màfiques i ultramàfiques associades a granitoides hercinians de la Serralada Costanera Catalana. Des dels inicis del segle passat, les roques màfiques de Susqueda, dominades per plagiòclasi i hornblenda com a mineral màfic, i amb quars en quantitats variables, havien estat considerades de manera conjunta com a diorites. La cartografia i la descripció petrogràfica de detall realitzada en aquesta tesi ha permès determinar que el gruix del Complex està format per una amalgama de petites intrusions màfiques, principalment per bojites i quarsobojites, les quals es caracteritzen per una plagiòclasi més càlcica (An > 50) que la corresponent a les diorites. Aquestes litologies dominants estan associades a una gran diversitat de litologies menors, entre les quals destaquen roques ultramafiques com les hornblendites olivíniques. Les relacions intrusives observades suggereixen, a més a més, que les roques del Complex es van emplaçar amb posterioritat tant a les principals fases de deformació hercinianes com a les fases més tardanes. Les roques màfiques estan sovint associades a cossos de granodiorita biotítica i presenten relacions de mescla de magmes amb aquestes, amb la consegüent generació d’un variat espectre de roques híbrides de composició tonalítica. Aquestes relacions indiquen la coexistencia de magmes de composició bàsica i àcida en estat de fusió parcial i plantegen la possibilitat d’un nexe genètic entre ambdós. L’estudi de la geoquímica dels minerals de les diferents litologies posa de manifest l’afinitat gabroica de les roques màfiques i ultramàfiques del Complex, i ha permès obtenir estimacions de pressió i temperatura per a algunes d’elles. Les hornblendites olivíniques, per exemple, semblen haver-se format a pressions entre els 12 kbar i els 6 kbar i al voltant dels 1000 °C; mentre que la resta de litologies donen rangs inferiors de pressió i temperatura, des de 6 kbar i 1000 °C fins a 1 kbar i 650 °C. Les dades geoquímiques d’elements majoritaris en roca total mostren una certa dispersió composicional en el grup de les bojites, a partir de les quals es reconeixen al menys dues tendències evolutives. Aquestes tendències no es poden explicar només per cristal·lització fraccionada de magmes bàsics, sinó que suggereixen la participació de processos de mescla tant de magmes àcids i bàsics (evidenciats per les zones híbrides heterogènies) com de magmes bàsics i fraccionats cristal·lins, responsables de la formació de les hornblendites olivíniques. En general, les diferents litologies que conformen el Complex defineixen una sèrie calcoalcalina amb caràcter càlcic, amb una bona representació de l’extrem més bàsic, i suggereixen la participació del mantell en un context de marge compressiu amb subducció associada. Les dades isotòpiques, a més a més, indiquen que el mantell involucrat en la petrogènesi del Complex tenia una component marcadament radiogènica. Les bojites podrien representar petits volums de magmes que s’han segregat de cossos basàltics generats per la fusió del mantell i estancat a nivells més profunds o a la base de l’escorça. El Complex de Susqueda, situat en una posició marginal, és el testimoni dels processos petrogenètics i les complexes interaccions que van precedir (i potser també desencadenar) les intrusions principals de granodiorites i monzogranits del Batòlit Costaner Català.
The Susqueda Complex is the largest outcrop of mafic and ultramafic rocks associated with Hercynian granitoids in the Catalan Coastal Range. Since the beginning of the last century, the mafic rocks of Susqueda, dominated by plagioclase and hornblende as a mafic mineral, and quartz in varying amounts, had been considered as diorites. The cartography and detailed petrographic description carried out in this thesis allowed us to determine that the thickness of the Complex is formed by an amalgam of small mafic intrusions, mainly bojites and quartz-bojites, which are characterized by a more calcic plagioclase than that corresponding to diorites. These dominant lithologies are associated with a wide variety of minor lithologies, including ultramafic rocks such as olivine hornblendites. The intrusive relationships suggest that the emplacement of the Complex postdates both the main Hercynian deformation phases and the later phases. Mafic rocks are often associated with bodies of biotite granodiorite and show magma mixing relationships with them, with the consequent generation of a wide spectrum of hybrid rocks of tonalitic composition. These relationships indicate the coexistence of basic and acid magmas in a state of partial fusion and raise the possibility of a genetic nexus between the two. The mineral geochemistry reveals the gabbroic affinity of the mafic and ultramafic rocks, and allowed us to obtain pressure and temperature estimates. Whole-rock geochemical data show some compositional dispersion of the bojites, from which at least two evolutionary trends are recognized. The lithologies that make up the Complex define a calc-alkaline trend, and suggest the participation of the mantle in a context of compressive margin with associated subduction. Isotopic data, moreover, indicate that the mantle involved in the petrogenesis of the Complex had a markedly radiogenic component. The bojites could represent small volumes of magma that have separated from mantle-derived magma stagnated at deeper levels or at the base of the crust. The Susqueda Complex, located in a marginal position, attests the petrogenetic processes and complex interactions that preceded (and perhaps also triggered) the main intrusions of granodiorite and monzogranite of the Catalan Coastal Batholith.
APA, Harvard, Vancouver, ISO, and other styles
40

Vidal, Sánchez Diego. "Bioinspired iron models: from diiron complexes to supramolecular functionalized metallocavitands." Doctoral thesis, Universitat de Girona, 2019. http://hdl.handle.net/10803/668200.

Full text
Abstract:
The oxidation of hydrocarbons under soft and selective conditions is a reaction almost exclusively produced under these conditions by enzymes. A lot of these enzymes, posses iron in their metal center, responsible for the reactivity. Not only the metal is responsible for the reactivity, but also the surrounding environment (residues, special geometries) that direct the reactivity of the metal through spececific pathways that enhance the activity and selectivity of the reaction. In this thesis, there have been prepared simple models of bimetalic iron centers, in order to reproduce the reactivity of bimetallic iron enzymes, and on the other hand, imitate the environment around the metal center Combining this center with a supramolecular structure, specifically the cavitands, in order to imitate the selectivity and / or the improvement of the activity of the metal center alone
La oxidació d’hidrocarburs en condicions suaus i selectives és una reacció que gairebé exclusivament es produïda en aquestes condicions pels enzims. Una gran part d’aquests enzims, tenen ferro en el seu centre metàl·lic, el cual és responsable de la reactivitat. A més a més, no nomès el metall és l’únic responsable de la reactivitat, si no també l’entorn que envolta properament al metall dirigeix la reacció de tal manera que es pugui dur a terme de manera més eficient i selectiva. En aquesta tesi, doncs, s’han preparat models simples de centres de ferro bimetàl·lics, per tal de reproduir la reactivitat d’enzims bimetàl·lics de ferro, i per altra banda, intentar imitar aquest entorn al voltant del centre metàl·lic, combinant aquest centre amb una estructura supramolecular, concretament els cavitands, per tal de imitar la selectivitat i/o la millora de la activitat del centre metàlic per si sol
APA, Harvard, Vancouver, ISO, and other styles
41

Dios, Maria Lu?sa C?lia Escalona de. "Chama o personal : estudo etnogr?fico sobre consultorias pessoais." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2017. http://tede2.pucrs.br/tede2/handle/tede/7679.

Full text
Abstract:
Submitted by PPG Ci?ncias Sociais (csociais-pg@pucrs.br) on 2017-10-05T14:46:05Z No. of bitstreams: 1 Maria_Luisa_C?lia_Escalona_de_Dios_Tese.pdf: 1501995 bytes, checksum: 26615622a948031036d50837d46a2f5e (MD5)
Approved for entry into archive by Caroline Xavier (caroline.xavier@pucrs.br) on 2017-10-06T11:54:46Z (GMT) No. of bitstreams: 1 Maria_Luisa_C?lia_Escalona_de_Dios_Tese.pdf: 1501995 bytes, checksum: 26615622a948031036d50837d46a2f5e (MD5)
Made available in DSpace on 2017-10-06T11:57:37Z (GMT). No. of bitstreams: 1 Maria_Luisa_C?lia_Escalona_de_Dios_Tese.pdf: 1501995 bytes, checksum: 26615622a948031036d50837d46a2f5e (MD5) Previous issue date: 2017-08-28
Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
In the last ten year, Brazil has shown an increase on its purchasing power, a relative growth of social mobility and also of sophisticated consumption.In parallel to those processes, there was an increment upon the offering of personal services which turned into the form of consultancies to accomplish several activities, such as sorting out closets, walking dogs, shopping, advising on customer?s way of dressing and building his/her personal image, among others.Individuals that provide such sort of services call themselves personals, emphasizing the individual nature of supplied services. Since those professionals hold a especific know-how they introduce themselves as "specialists".Their given services meet demands that did not exist until short time ago or were met by other means. Therefore, they were met by the individual himself as long as he held the needed knowledge and skills, got through familiar socialization or by some other family member, through friends or employees who held those skills, which means that those services were supplied in the scope of wider and steady relatioships,involving the logic of gift or those relationships based on wageearning. From a research developed between 2013 and 2016 in Porto Alegre, Sao Paulo and Paris, this thesis aims to investigate the rise of that personal services market.Using an ethnographic approach one searched to see how offering and the demand for such personal services were built and what the implications were in the way the individual was developed into contemporaneity.The main conclusion for this work says the formation of that personal services market is related to changes in the family life organization and in the professional work environment and specific in the Brazilian case, to the economic upswing of certain social groups and also with the possibility of capital reconversion by specific social segments and professional categories.
Nos ?ltimos dez anos, no Brasil, observou-se um aumento do poder aquisitivo, um relativo crescimento do grau de mobilidade social e, tamb?m, de sofistica??o do consumo. Paralelo a estes processos, houve um crescimento da oferta de servi?os pessoais que assumem a forma de consultorias para realiza??o de diversas atividades, tais como: organizar arm?rios, levar cachorros para passear, realizar compras, orientar o cliente em rela??o ao seu estilo de vestir e a constru??o de sua imagem pessoal, entre outros. Os indiv?duos que prestam esse tipo de servi?os se autodenominam personals, enfatizando a natureza individualizada dos servi?os oferecidos. Por deterem um saber espec?fico, os profissionais que oferecem servi?os pessoais apresentam-se como ?especialistas?. Os servi?os que eles oferecem atendem demandas que n?o existiam at? pouco tempo atr?s ou que eram satisfeitas de outras formas. Assim sendo, eram satisfeitas pelo pr?prio indiv?duo, na medida em que possu?a os conhecimentos e habilidades necess?rios, adquiridos atrav?s da socializa??o familiar, ou por algum outro membro da fam?lia, por amigos ou empregados que detinham essas habilidades, o que significa que esses servi?os eram prestados no ?mbito de rela??es mais amplas e permanentes, envolvendo a l?gica da d?diva ou a das rela??es de assalariamento. A partir de uma pesquisa realizada entre 2013 e 2016 em Porto Alegre, S?o Paulo e Paris (durante o estagio doutoral 2015 a 2016) esta tese visa investigar o surgimento desse mercado de servi?os pessoais. Por meio de uma abordagem etnogr?fica se buscou averiguar como se construiu a oferta, a demanda destes servi?os pessoais e quais as implica??es na forma como se constr?i a pessoa na contemporaneidade. A principal conclus?o deste trabalho diz respeito ao fato de que a constitui??o desse mercado de servi?os pessoais est? relacionada com a ocorr?ncia de mudan?as na organiza??o da vida familiar e no mundo do trabalho e, especificamente no caso brasileiro, com a ascens?o econ?mica de certos grupos sociais e com a possibilidade de reconvers?o de capitais por parte de determinados segmentos sociais e categorias profissionais.
APA, Harvard, Vancouver, ISO, and other styles
42

Oliveira, Camila Silva de. "Altera??es nos dep?sitos de glicog?nio e conte?do de glicose na hemolinfa de Achatina fulica bowdich, 1822 (mollusca, gastropoda), hospedeiro intermedi?rio de Angiostrongylus, exposta ao l?tex de coroa de cristo Euphorbia splendens var. hislopii." Universidade Federal Rural do Rio de Janeiro, 2007. https://tede.ufrrj.br/jspui/handle/tede/756.

Full text
Abstract:
Made available in DSpace on 2016-04-28T20:15:29Z (GMT). No. of bitstreams: 1 2007- Camila Silva de Oliveira.pdf: 2674725 bytes, checksum: dfd3ff2b9c6a77353a011a46e2ecb466 (MD5) Previous issue date: 2007-02-16
Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior
Snails are invertebrate of great importance for the human and veterinary medicine, therefore they serve as intermediate host of some parasites, being able to acometer animal or human people. The snail Achatina Fulica is an intermediate host of nematodes like Angiostrongylus spp. These snails had been introduced in Brazil as an attempt to substitute traditional escargot, however the great creations had not provided the waited profit and the criation had been abandoned. The Euphorbia splendens var. hislopii is an originary plant of the African continent and is largely used as ornamental plant. This plant, however, is classified as toxic by the SINITOX Sistema Nacional de Informa??es T?xico- Farmacol?gicas. So the present study intended to evaluate the consequences of the use of the latex of Euphorbia splendens var hislopii on the metabolism of carbohydrates of Achatina fulica. For the determination of the subletal Dose groups with thirty animals had been displayed to the latex in the concentrations of 1%, 2,5%, 5%, 7,5%, 12,5%, 15%, 20%, 25%, 50%, 75% and 100%, being Concentration Dose 50 (CL50) 11,2%. The values observed for the concentration of glycogen in the digestive gland and the cefalopodal mass had demonstrated that the exposition after had extremely significant difference only in the first day after displayed. The analysis of polynomial regression demonstrated to have one strong positive relation (r2=0,95) enters the glycogen concentration in the cefalopodal mass of snail displayed to the CL50 and snails of control group after to long of the time the exposition to the latex. When comparing the glucose levels in hemolinfa of displayed snails to CL50 and snails of control group in function of the time after the exposition in days, the polynomial regression evidenced that these levels increase as the continuation of the days. The exposition of the A. fulica to the CL50 of the latex of Euphorbia splendens var. hislopii make a reduction in the deposits of glycogen in digestive gland of the clam, presented in a delayed effect on the deposits of glycogen of the cefalopodal mass of the snails, did not have significant variations in the glucose content in hemolinfa of A. fulica displayed to the latex. Although in the first dissection day has been found a bigger concentration of free glucose level in hemolinfa. The exposition to the latex of E. splendens var. hislopii make a significant reduction in the concentration of galactogen in albumen gland of the snail.
Os moluscos s?o invertebrados de grande import?ncia para a medicina humana e veterin?ria, pois servem como hospedeiros intermedi?rios de v?rios parasitos, podem acometer animais ou o homem. O molusco Achatina fulica em especial, ? hospedeiro intermedi?rio de nemat?ides do g?nero Angiostrongylus spp. Estes moluscos,foram introduzidos no Brasil como uma tentativa de substituir o tradicional escargot, por?m as grandes cria??es n?o proporcionaram o lucro esperado e os criadouros foram abandonados. A Euphorbia splendens var. hislopii ? uma planta origin?ria do continente africano e ? muito utilizada como planta ornamental, devido ao seu f?cil cultivo. Esta planta, por?m, ? classificada como t?xica pelo SINITOX Sistema Nacional de Informa??es T?xico- Farmacol?gicas. Assim sendo, o presente estudo pretendeu avaliar as conseq??ncias do uso do l?tex de Euphorbia splendens var hislopii sobre o metabolismo de carboidratos de Achatina fulica. Para a determina??o da dose subletal grupos com trinta animais foram expostos ao l?tex nas concentra??es de 1%, 2.5%, 5%, 7.5%, 12.5%, 15%, 20%, 25%, 50%, 75% e 100%, sendo a concentra??o letal 50 (CL50) 11,2% . Os valores observados para a concentra??o de glicog?nio na gl?ndula digestiva e na massa cefalopodal demonstraram que houve diferen?a significativa apenas no primeiro dia ap?s a exposi??o a CL50. A an?lise de regress?o polinomial demonstrou haver uma forte rela??o positiva (r2=0,95) entre a concentra??o de glicog?nio na massa cefalopodal de moluscos expostos a CL50 e moluscos do grupo controle ao longo do tempo ap?s a exposi??o ao l?tex. Ao comparar os n?veis de glicose na hemolinfa de moluscos expostos a CL50 e de moluscos controles em fun??o do tempo ap?s a exposi??o em dias, a regress?o polinomial evidenciou que esses n?veis aumentam conforme o prosseguimento dos dias. A exposi??o de A. fulica ? CL50 do l?tex de E. splendens var. hislopii provocou a redu??o nos dep?sitos de glicog?nio na gl?ndula digestiva, e um efeito tardio sobre os dep?sitos de glicog?nio da massa cefalopodal, e n?o apresentou varia??es significativas no conte?do de glicose na hemolinfa de A. fulica exposta ao l?tex. Embora nos primeiros dias de disseca??o tenha sido encontrado um maior n?vel de glicose livre circulante na hemolinfa. A exposi??o ao l?tex de E. splendens var. hislopii provocou uma significativa redu??o na concentra??o de galactog?nio na gl?ndula de alb?men de A. fulica.
APA, Harvard, Vancouver, ISO, and other styles
43

Firmiano, Enely Maris da Silveira. "Estudo Histol?gico e localiza??o imuno-histoqu?mica de prote?nas do citoesqueleto em ov?rios, test?culos e epid?dimos de tr?s esp?cies de lagartos da Fam?lia Leiosauridae (Reptilia: Squamata)." Universidade Federal Rural do Rio de Janeiro, 2017. https://tede.ufrrj.br/jspui/handle/jspui/2467.

Full text
Abstract:
Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2018-09-24T15:13:44Z No. of bitstreams: 1 2017 - Enely Maris da Silveira Firmiano.pdf: 12307016 bytes, checksum: d58bee7e5ddc0113fa072ab4e9aabc29 (MD5)
Made available in DSpace on 2018-09-24T15:13:44Z (GMT). No. of bitstreams: 1 2017 - Enely Maris da Silveira Firmiano.pdf: 12307016 bytes, checksum: d58bee7e5ddc0113fa072ab4e9aabc29 (MD5) Previous issue date: 2017-08-29
Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
Cap. I The aim of the current study is to investigate the histological and histochemical description, as well as the presence and immunohistochemical distribution of cytoskeleton proteins such as alpha smooth muscle actin, desmin and vimentin in the ovaries, testes and epididymis of Enyalius bilineatus, Enyalius perditus and Urostrophus vautieri. These species are representatives of family Leiosauridae, in order to help developing a database on the reproductive biology of these lizards, which could be compared to that of other reptile species and vertebrates. The herein studied specimens are deposited in the Herpetological Collection of Federal University of Juiz de Fora. The animals? ovaries, epididymis and testes were removed and sent to the Histology and Embryology Laboratory (UFRRJ), where they were fixed, processed and then subjected to histological, histochemical and immunohistochemical techniques. The ovaries of these leiosauridae are functionally-active paired organs filled with ovarian follicles at different follicular development stages. These organs are covered by a simple cubic epithelium, which presents an underlying connective tissue layer called tunica albuginea. The testes are covered by the tunica albuginea and hold septa forming lobes where the seminiferous tubules are located in. The epididymis of these lizards are convolute ducts internally coated by an epithelium, whose shape ranges from simple cylindrical to simple cubic with stereocilia. The immunohistochemical analysis applied to the ovaries of the herein studied lizards showed moderate to strong reaction to the alpha smooth muscle actin in the teak layer and in endothelial cells of blood vessels. With respect to the species? testes, this cytoskeleton protein showed strong reaction in the tunica albuginea, interstitial tissue, and in endothelial cells of blood vessels. As for the epididymis, the alpha-actin showed immunohistochemical reaction in the capsule and in the interstitial tissue of the lizards. The antibody ?desmin? showed strong immunostaining in the albuginea and ovarian stroma of E. perditus, only; however, the endothelial cells in the blood vessels of the three herein analyzed species showed positive reaction to this intermediate filament. Desmin showed immunoreactivity in the testicular albuginea and in the endothelial cells of the blood vessels in the herein analyzed leiosauridae testes; however, only E. bilineatus showed immunostaining in the interstitial region. Desmin showed positive immunoreaction in the epididymis of E. perditus and E. bilineatus, only. Vimentin did not show immunostaining in the ovaries, testes and epididymis of the three analyzed lizards. The consistent results found in the current study provide additional data on the reproductive biology of the investigated species. These data may be used for phylogenetic and behavioral comparisons between the herein studied species and other species belonging to family Leiosauridae or other reptiles Cap. II The aim of the current study is to investigate the histological description, as well as the presence and immunohistochemical distribution of alpha smooth muscle actin, desmin and vimentin in the testes and epididymis of Enyalius bilineatus, Enyalius perditus and Urostrophus vautieri, which are representatives of family Leiosauridae, in order to help developing a database on the reproductive biology of these lizards, which could be compared to that of other reptile species and vertebrates. The herein studied specimens are deposited in the Herpetological Collection of Federal University of Juiz de Fora. The animals? epididymis and testes were removed and sent to the Histology and Embryology Laboratory (UFRRJ), where they were fixed, processed and then subjected to histological and immunohistochemical techniques. The shape of the testes varies reasonably among the studied leiosauridae. These organs are covered by the tunica albuginea and hold septa forming lobes, where the seminiferous tubules are located in. The epididymis of these lizards are convolute ducts internally coated by an epithelium, whose shape ranges from simple cylindrical to simple cubic with stereocilia. The immunohistochemical analysis applied to the testes of the herein studied lizards showed strong positive reaction to the alpha smooth muscle actin in the tunica albuginea, interstitial tissue, and in endothelial cells of blood vessels. Desmin showed strong immunoreactivity in the testicular albuginea of E. bilineatus and moderate immunoreactivity in E. perditus and U. vautieri; however, only E. bilineatus showed immunostaining in the interstitial tissue region. The endothelial cells of blood vessels showed positive immunoreaction to desmin in the three herein analyzed species. The epididymis showed moderate immunohistochemical reaction to alpha smooth muscle actin in the capsule and in the interstitial tissue, whereas desmin showed positive immunoreaction in the epididymis of E. perditus and E. bilineatus, only. Vimentin did not show immunostaining in the testes and epididymis of the three analyzed lizards. The consistent results found in the current study provide additional data on the reproductive biology of the investigated species. These data may be used for phylogenetic and behavioral comparisons between the herein studied species and other species belonging to family Leiosauridae or other reptiles.
Cap. I Este trabalho investiga, al?m da descri??o histol?gica e histoqu?mica, a presen?a e distribui??o imuno-histoqu?mica de alfa-actina de m?sculo liso, desmina e vimentina nos ov?rios, test?culos e epid?dimos de Enyalius bilineatus, Enyalius perditus e Urostrophus vautieri, representantes da fam?lia Leiosauridae, para ajudar a formar uma base de dados sobre a biologia reprodutiva destes lagartos que possam ser comparados com outras esp?cies de r?pteis, bem como com outros vertebrados. Os esp?cimes estudados encontram-se depositados na Cole??o Herpetol?gica da UFJF. Os ov?rios, epid?dimos e test?culos dos animais foram removidos e encaminhados ao Laborat?rio de Histologia e Embriologia (UFRRJ), onde foram fixados, processados e ent?o submetidos ?s t?cnicas histol?gicas, histoqu?micas e imuno-histoqu?micas. Os ov?rios destes leiosaur?deos s?o ?rg?os pareados, repletos de fol?culos ovarianos, em distintos est?gios de desenvolvimento folicular. Estes s?o revestidos por epit?lio c?bico simples, com uma camada de tecido conjuntivo subjacente, a t?nica albug?nea. Os test?culos encontram-se envolvidos pela t?nica albug?nea e em seu interior cont?m septos que formam l?bulos, nos quais se localizam os t?bulos semin?feros. Os epid?dimos destes lagartos s?o ductos convolutos, revestidos internamente por um epit?lio que varia de cil?ndrico simples a c?bico simples com estereoc?lios. A imuno-histoqu?mica, nos ov?rios dos lagartos estudados, mostra uma rea??o moderada a acentuada para alfa-actina de m?sculo liso na camada da teca e em c?lulas endoteliais dos vasos sangu?neos, enquanto nos test?culos destas esp?cies nota-se uma acentuada rea??o para esta prote?na do citoesqueleto, na t?nica albug?nea, no tecido intersticial e nas c?lulas endoteliais dos vasos sangu?neos. Nos epid?dimos observa-se imunomarca??o para alfa-actina na c?psula e no tecido intersticial destes lagartos. Quanto ao anticorpo desmina, apenas em E. perditus, foi poss?vel imunorrea??o na albug?nea e no estroma ovariano, no entanto, nas tr?s esp?cies analisadas, as c?lulas endoteliais dos vasos sangu?neos demonstraram rea??o positiva a este filamento intermedi?rio. Nos test?culos dos leiosaur?deos estudados, a desmina foi imunolocalizada na albug?nea testicular e nas c?lulas endoteliais dos vasos sangu?neos, entretanto, apenas em E. bilineatus ocorreu imunomarca??o, na regi?o do interst?cio. Nos epid?dimos, a desmina demonstrou imunorrea??o positiva apenas em E. perditus e E. bilineatus. N?o houve rea??o imuno-histoqu?mica para vimentina nos ov?rios, test?culos e epid?dimos dos tr?s lagartos analisados. Este estudo obteve resultados consistentes, fornecendo assim mais dados sobre a biologia reprodutiva das esp?cies aqui investigadas, que poder?o ser utilizados para compara??es filogen?ticas e comportamentais com outras esp?cies da fam?lia Leiosauridae e outros r?pteis. Cap. II Este trabalho investiga, al?m da descri??o histol?gica, a presen?a e distribui??o imuno-histoqu?mica de alfa-actina de m?sculo liso, desmina e vimentina nos test?culos e epid?dimos de Enyalius bilineatus, Enyalius perditus e Urostrophus vautieri, representantes da fam?lia Leiosauridae, para ajudar a formar uma base de dados sobre a biologia reprodutiva destes lagartos que possam ser comparados com outras esp?cies de r?pteis, bem como com outros vertebrados. Os esp?cimes estudados encontram-se depositados na Cole??o Herpetol?gica da Universidade Federal de Juiz de Fora. Os epid?dimos e test?culos dos animais foram removidos e encaminhados ao Laborat?rio de Histologia e Embriologia (UFRRJ), onde foram fixados, processados e ent?o submetidos ?s t?cnicas histol?gicas e imuno-histoqu?micas. O formato dos test?culos varia razoavelmente entre os leiosaur?deos estudados. Estes ?rg?os encontram-se envoltos pela t?nica albug?nea e no seu interior cont?m septos que formam l?bulos incompletos, nos quais se localizam os t?bulos semin?feros. Os epid?dimos destes lagartos s?o ductos convolutos. Estes ductos s?o revestidos internamente por um epit?lio que varia de cil?ndrico simples a c?bico simples com estereoc?lios. A imuno-histoqu?mica revela uma acentuada rea??o positiva para alfa-actina de m?sculo liso nos test?culos dos leiosaur?deos analisados, na t?nica albug?nea e no tecido intersticial, assim como, nas c?lulas endoteliais dos vasos sangu?neos. A desmina apresentou acentuada imunorreatividade na albug?nea testicular em E. bilineatus e moderada em E. perditus e U. vautieri, entretanto, na regi?o do tecido intersticial, apenas em E. bilineatus ocorreu imunomarca??o. Nas tr?s esp?cies analisadas, as c?lulas endoteliais dos vasos sangu?neos demostraram imunorrea??o positiva para desmina. Nos epid?dimos observou-se rea??o imuno-histoqu?mica moderada para alfa-actina de m?sculo liso na c?psula e no tecido intersticial, enquanto a desmina demonstrou imunorrea??o positiva apenas em E. perditus e E. bilineatus. N?o houve imunomarca??o para vimentina nos test?culos e epid?dimos dos tr?s lagartos analisados. Este estudo obteve resultados consistentes, fornecendo assim mais dados sobre a biologia reprodutiva das esp?cies aqui investigadas, que poder?o ser utilizados para compara??es filogen?ticas e comportamentais com outras esp?cies da fam?lia Leiosauridae e outros r?pteis.
APA, Harvard, Vancouver, ISO, and other styles
44

Lima, Mariana Gomes. "Angiostrongylus cantonensis (Nematoda): estudo comparativo dos efeitos da infec??o sobre o metabolismo de Biomphalaria straminea e Biomphalaria tenagophila (Mollusca)." Universidade Federal Rural do Rio de Janeiro, 2016. https://tede.ufrrj.br/jspui/handle/jspui/1474.

Full text
Abstract:
Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-03-22T13:55:27Z No. of bitstreams: 1 2016 - Mariana Gomes Lima.pdf: 3236185 bytes, checksum: 3517b88022c7943663ae0274085cc96a (MD5)
Made available in DSpace on 2017-03-22T13:55:27Z (GMT). No. of bitstreams: 1 2016 - Mariana Gomes Lima.pdf: 3236185 bytes, checksum: 3517b88022c7943663ae0274085cc96a (MD5) Previous issue date: 2016-02-23
Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq
The nematode Angiostrongylus cantonensis has gained notoriety under the public health point of view out of its endemic area in Asia, since in recent years cases of eosinophilic meningoencephalitis have been reported in other continents, such as in the Americas. In Brazil over thirty cases of this zoonotic disease have been recorded and there are reports of the presence of this nematode in 11 states. In its life cycle A. cantonensis has, along their development, need for intermediate and final host, involving predominantly molluscs and rodents, respectively, and different paratenic hosts, humans are accidental hosts. They can also infect a rich variety of terrestrial and aquatic molluscs and in this study, there were used specimens of neotropical planorbids transmitters of schistosomiasis, Biomphalaria straminea and Biomphalaria tenagophila, born and reared in the laboratoryfor experimental infection by A. cantonensis. In order to characterize the resulting physiological profile that host-parasite relationship, the host molluscs were separated into groups of infected and uninfected containing thirty molluscs per group, all made in triplicates. The investigation lasted 21 days, after the pre-patent period molluscs were dissected to collect hemolymph, removal of tissues and use the shell for calcium concentration check. The reproductive biology of both species was observed on the viability of the eggs, as well as (A) Number of eggs/ eggs mass; (B) Number of eggs/mollusc; (C) Number of eggs mass/mollusc and (D) Number of hatched molluscs/mollusc. In the hemolymph there were quantified total protein, glucose, uric acid, urea, the activity of transaminases AST and ALT, lactate dehydrogenase - LDH, and organic acids (oxalic, pyruvic, succinic and lactic). In the cephalopedal mass and digestive gland the glycogen content was measured and in the albumen gland, it was measured the galactogen. The results showed that the snails infected, of both species showed significant reduction in the viability of eggs, 50% for B. straminea and 10% for B. tenagophila. The metabolic status was also strongly affected, with mobilization of glycogen and hemolymph glucose reduction of 68% to B. straminea and 6.48% for B. tenagophila, followed by anincrease of LDH activity of 518.25% to 320.14% B. straminea and to B. tenagophila as well as the concentration of lactic acid, 5,7mM to B. straminea and 0.34 mM for B. tenagophila, and reduction in the concentration of pyruvic and succinic acids. The intense release of gluconeogenic amino acids from protein catabolism reversed the excretory pattern from uricotelic to ureotelic in both B. tenagophila and B. straminea. The tissue injury showed increase of 69% in the concentration of total proteins in the hemolymph of B. straminea and the intense activity of aminotransferases, ALT and AST, an increase of 241.26% and 360%, respectively, compared to the control group. The infection reduced by 51.57% the concentration of total circulating proteins to B. tenagophila, and increased ALT and AST activity at 310% and 280% compared to uninfected snails. The results of this study indicate that the energetic and structural metabolism of both species is strongly affected by the infection, showing the activation of an anaerobic to compensate for the depletion of glicidics stores as well as the change in the excretory pattern depending on the use of substrates protein for the production of ATP. Although studies on clinical, pathological and epidemiological neural angiostrongyliasis have been extensively carried xiii out, data on the metabolic and reproductive profile of snails infected by A. cantonensis are scarce. This pioneering study focused on species of host-parasite relationship certainly contribute to the knowledge of this interaction, as well as to the epidemiology of transmission A. cantonensis in addition to providing new subsidies which can be used in prevention and control of eosinophilic meningitis, zoonosis considered emerging in Brazil.
O nemat?deo Angiostrongylus cantonensis tem ganhado notoriedade sob o ponto de vista da sa?de p?blica fora de sua ?rea end?mica na ?sia, uma vez que nos ?ltimos anos casos de meningoencefal?te eosinof?lica v?m sendo reportados em outros continentes, como nas Am?ricas. No Brasil mais de trinta casos dessa zoonose j? foram registrados e h? relatos da presen?a desse nemat?deo em 11 estados. Em seu ciclo de vida heteroxeno A. cantonensis tem, ao longo do seu desenvolvimento, a necessidade de hospedeiro intermedi?rio e definitivo, envolvendo predominantemente, moluscos e roedores, respectivamente, al?m de v?rios hospedeiros parat?nicos, sendo o homem um hospedeiro acidental. Pode infectar uma rica variedade de moluscos terrestres e aqu?ticos e neste estudo, foram utilizadas para infec??o experimental popula??es nascidas e criadas em laborat?rio de duas esp?cies de planorb?deos neotropicais transmissores da esquistossomose mans?nica, Biomphalaria straminea e Biomphalaria tenagophila. Com a finalidade de caracterizar o perfil fisiol?gico resultante dessa rela??o hospedeiro-parasito, os moluscos hospedeiros foram separados em grupos de infectados e n?o infectados, contendo trinta moluscos por grupo, todos feitos em triplicatas. A investiga??o durou 21 dias, ao fim do per?odo pr?-patente os moluscos foram dissecados para a coleta de hemolinfa, retirada de tecidos e utiliza??o da concha para verifica??o de concentra??o de c?lcio. A oviposi??o dos moluscos de ambas as esp?cies foi observada quanto ? viabilidade dos ovos, assim como (A) N?mero de massas ov?geras/molusco; (B) N?mero de ovos/molusco; (C) N?mero de ovos/massa ov?gera e (D) N?mero de moluscos eclodidos/molusco. Na hemolinfa foram quantificadas as prote?nas totais, glicose, ?cido ?rico, ureia, a atividade das transaminases ALT e AST, lactato desidrogenase - LDH, e os ?cidos org?nicos (ox?lico, pir?vico, succ?nico e l?tico). Na massa cefalopediosa e gl?ndula digestiva, foram mensurados os conte?dos de glicog?nio e na gl?ndula de alb?men, foi mensurado o galactog?nio. Os resultados obtidos mostraram que os moluscos infectados, de ambas as esp?cies, apresentaram redu??o significativa na viabilidade dos ovos, de 50% para B. straminea e de 10% para B. tenagophila. O estado energ?tico tamb?m foi vigorosamente afetado, com mobiliza??o das reservas de glicog?nio, e queda da glicemia de 68% para B. straminea e de 6,48% para B. tenagophila, seguida de uma eleva??o na atividade da LDH de 518,25% para B. straminea e 320,14% para B. tenagophila, bem como na concentra??o do ?cido l?tico, 5,7mM para B. straminea e 0,34 mM para B. tenagophila, e redu??o na concentra??o dos ?cidos pir?vico e succ?nico. A intensa libera??o de amino?cidos gliconeog?nicos a partir do catabolismo proteico inverteu o padr?o excretor de uricot?lico para ureot?lico tanto em B. tenagophila quanto em B. straminea. A les?o tecidual mostrou eleva??o de 69% na concentra??o das prote?nas totais na hemolinfa de B. straminea, bem como a intensa atividade das aminotransferases, AST e ALT, com aumento de 241,26% e 360%, respectivamente, em rela??o ao grupo controle. A infec??o reduziu em 51,57% a concentra??o de prote?nas totais circulantes para B. tenagophila, e elevou a atividade de ALT e AST em 310% e xi 280% em compara??o com os moluscos n?o infectados. Os resultados observados neste estudo indicam que o metabolismo energ?tico e estrutural de ambas as esp?cies foi vigorosamente afetado pela infec??o, mostrando a ativa??o de uma via anaer?bia para compensar a exaust?o das reservas glic?dicas, assim como a mudan?a no padr?o excretor em fun??o da utiliza??o de substratos proteicos para produ??o de ATP. Embora, estudos sobre aspectos cl?nicos, patol?gicos e epidemiol?gicos da angiostrongil?ase neural t?m sido extensivamente realizados, dados acerca do perfil metab?lico e reprodutivo de moluscos infectados por A. cantonensis s?o escassos. Este estudo pioneiro na rela??o parasito-hospedeiro das esp?cies focadas seguramente contribuir? tanto para o conhecimento dessa intera??o, quanto da epidemiologia da transmiss?o de A. cantonensis, al?m de fornecer novos subs?dios que poder?o ser utilizados em medidas de preven??o e controle da meningite eosinof?lica, zoonose considerada emergente no Brasil
APA, Harvard, Vancouver, ISO, and other styles
45

LO, IACONO EVA. "THE GREY AREAS IN TRAFFICKING OF NIGERIAN WOMEN: FROM TRAFFICKED WOMEN TO PERPETRATOR OF TRAFFICKING." Doctoral thesis, Università Cattolica del Sacro Cuore, 2014. http://hdl.handle.net/10280/2458.

Full text
Abstract:
Non esistono dati statistici certi sul numero totale di donne nigeriane trafficate annualmente in Italia ed introdotte nel mercato del sesso. Di fronte a questo ampio numero oscuro, bisogna porsi delle domande: cosa succede alla vittima di tratta quando non trova alcuna forma di aiuto o assistenza sociale? Cosa avviene quando non riesce ad uscire dal mercato del sesso? Secondo testimoni diretti e fonti ufficiali, tra le attuali madams vi sono anche ex vittime che hanno fatto carriera nella gerarchia della tratta e dentro le organizzazioni criminali. La mobilità femminile verso il lato gestionale di questo crimine rappresenta la caratteristica più rilevante della tratta di matrice nigeriana: vale a dire, le vittime sono condotte nel corso del tempo a svolgere una parte attiva nel complesso progetto criminale. Questo elemento distintivo al modello nigeriano richiede un’analisi approfondita, tramite nuovi approcci intesi a sottolineare: a) le aree grigie del mercato della tratta; b) i ruoli intermedi che gli individui ricoprono all'interno del modello vittima/reo; c) la mobilità femminile nella gerarchia dei gruppi criminali. Attraverso metodi di stampo antropologico, questo contributo intende effettuare una analisi più approfondita sui molteplici ruoli delle donne nel mercato della tratta umana.
There are not clear figures regarding the group of Nigerian women who are lured annually in the sex market in Italy. Facing such a dark number, several questions on the lives of these unknown women arise: What happens to the trafficking victims who do not find any form of social aid or assistance? What happens when the former trafficked women are not able to exit from the trade industry? According to eyewitness accounts as well as official sources, some current madams were trafficked women in the past. They made a career in the trafficking hierarchy and its organised crime groups. The female mobility towards the organisational side of the trafficking offence represents the most striking characteristic of Nigerian trade industry; that is, the victims are included by their persecutors as active part of a more complex criminal project. Such a distinctive element of Nigerian criminal model needs to be analysed through new approaches aimed at highlighting: a) the grey areas in the trade industry; b) the intermediate roles within the victim/offender model; c) the female vertical mobility in the trafficking hierarchy. Through an ethnographic methodological framework, this study wants to analyse the multiple female roles in the trafficking industry.
APA, Harvard, Vancouver, ISO, and other styles
46

Galve, Murillo Iñaki. "Síntesis de pirido[2,3-d]pirimidin-7(8H)-onas 2-arilamino sustituidas y derivados." Doctoral thesis, Universitat Ramon Llull, 2013. http://hdl.handle.net/10803/101403.

Full text
Abstract:
Les Cinases de Proteïna (PKs) estan implicades en processos fonamentals de la regulació del cicle cel•lular. L’acumulació d’anomalies als mecanismes de control i el comportament disfuncional que se’n deriva han estat detectats a cèl•lules de diferents teixits afectades per càncer, desordres immunològics, endocrins, nerviosos, neurodegenaratius, cardiovasculars, malalties infeccioses, diabetis, Alzheimer, asma, restenosi, arteriosclerosi, leucèmia, artritis, etc. Però d’entre totes les PKs, les Cinases de Tirosina (TKs) han estat destacades com a l’element central de tots aquests processos i, per tant, han estat objecte d’una gegantina tasca investigadora que n’ha augmentat el seu innegable interès com a diana terapèutica. És per aquest motiu, que el desenvolupament d’inhibidors selectius de TKs ha esdevingut una àrea d’investigació molt activa. El Laboratori de Síntesi de l’IQS disposa d’una dilatada experiència de síntesi de compostos heterocíclics, especialment pirido[2,3-d]pirimidines, de gran semblança amb coneguts inhibidors de TKs. Malauradament, d’entre tots els building blocks emprats per les estratègies sintétiques desenvolupades, les guanidines (especialment les arilguanidines) sempre han limitat l’espai químic assequible per culpa de la poca diversitat d’aquests reactius comercialment disponibles. Per tant, l’objectiu fonamental d’aquest treball és desenvolupar una metodologia com més genèrica millor que permeti obtenir guanidines i, especialment arilguanidines, i que sigui compatible amb les eines sintètiques disponibles emprades per a l’obtenció massiva de pirido[2,3-d]pirimidines. Amb aquest objectiu s’optimitza un procediment de guanidinació d’amines amb àcid aminoiminometanosulfònic (AIMSOA, acrònim de l’anglès aminoiminomethanesulfonic acid) en metanol procurant acoblar-lo amb la reacció multicomponent de Victory. Desgraciadament els rendiments amb arilguanidines són baixos com a resultat de llur baixa nucleofília, llur degradació causada pel metanol i per la competència amb el dissolvent de reacció. Com a alternativa, s’assagen protocols de condensació de piridones en 1,4-dioxà per tal d’afavorir la nucleofília d’aquestes arilguanidines. Sorprenentment no s’obtenen directament les piridopirimidines sinó uns intermedis que després d’un procés de transposició de Dimroth donen lloc als heterobicicles esperats amb rendiments força superiors als descrits mitjançant altres metodologies. En darrer lloc, es planteja i estudia una nova proposta estratègica alternativa al tradicional plantejament del Laboratori de Síntesi de l’IQS per a la síntesi orientada a diversitat. Aquesta proposta implica la construcció de l’esquelet pirido[2,3-d]pirimidínic, seguida de la seva activació mitjançant bromació i diazotizació, i finalment introducció de la diversitat química desitjada. Arran d’aquest estudi s’ha obtingut i aïllat un intermedi de Wheland bicíclic mai descrit fins ara i que posteriorment és transformat per tractament amb DMSO en un terme piropirimidínic dibromat i deshidrogenat a l’anell piridònic. A més a més, s’han desenvolupat eines sintètiques per obtenir sistemes 4-oxopirido[2,3-d]pirimidínics partint de llurs anàlegs 4-amino, metodologies que són una alternativa molt atractiva de les estratègies ja desenvolupades.
Las Quinasas de Proteína (PKs) se hallan implicadas en procesos fundamentales de la regulación del ciclo celular. La acumulación de anomalías en los mecanismos de control y el consiguiente comportamiento disfuncional han sido detectados en células de diferentes tejidos afectadas por cáncer, desórdenes inmunológicos, endocrinos, nerviosos, neurodegenarativos, cardiovasculares, enfermedades infecciosas, diabetes, Alzheimer, asma, restenosis, arteriosclerosis, leucemia, artritis, etc. Pero de entre todas las PKs, las Quinasas de Tirosina (TKs) han demostrado ser un elemento central en todos estos procesos y, por tanto, han atraído sobre sí un enorme esfuerzo investigador que ha remarcado, su innegable interés como diana terapéutica. Así pues, el desarrollo de inhibidores selectivos de TKs se ha convertido en un área muy activa de investigación. El Laboratorio de Síntesis del IQS posee amplia experiencia en la síntesis de compuestos heterocíclicos, en especial pirido[2,3-d]pirimidinas, de gran similitud con inhibidores conocidos de TKs. Ahora bien, de todos los building blocks empleados en las estrategias sintéticas desarrolladas, las guanidinas (especialmente las arilguanidinas) siempre han limitado el espacio químico asequible por la poca diversidad de estos reactivos comercialmente asequibles. Por consiguiente, el objetivo fundamental del presente estudio es desarrollar una metodología para la obtención de guanidinas y, en especial de arilguanidinas, que sea compatible con las herramientas sintéticas disponibles para la obtención masiva de pirido[2,3-d]pirimidinas. A tal efecto se optimiza una guanidinación de aminas con ácido aminoiminometanosulfónico en metanol con vistas a poder acoplarlo con la reacción multicomponente de Victory. Desgraciadamente los rendimientos con arilguanidinas son bajos como consecuencia de su baja nucleofilia, su degradación por efecto del metanol y el efecto competente del disolvente de reacción. Para circunvalar este contratiempo se ensayan reacciones de condensación de piridonas en 1,4-dioxano para favorecer la nucleofilia de estas guanidinas. Sorpredentemente no se obtienen directamente las piridopirimidinas sino unos intermedios que tras un proceso de transposición de Dimroth rinden los heterobiciclos deseados con rendimientos bastante superiores a los referidos para otras metodologías. Por último, se propone y estudia una estrategia alternativa de síntesis orientado a diversidad. En este sentido, se construye el esqueleto pirido[2,3-d]pirimidínico para después activarlo mediante bromación y diazotización, y finalmente introducir la diversidad deseada. Fruto de este estudio se ha obtenido y aislado un intermedio de Wheland bicíclico que posteriormente rinde un término piropirimidínico dibromado y deshidrogenado en el anillo piridónico. Adicionalmente, se han desarrollado herramientas sintéticas para la obtención de sistemas 4-oxopirido[2,3-d]pirimidínicos a partir de sus análogos 4-amino.
Protein Kinases (PKs) are involved in basic cellular cycle regulatory mechanisms. Deregulation of those has been found on cells of different tissues with cancer, immunological disorders, endocrine disorders, nervous disorders, neurodegenerative disorders, cardiovascular disorders, infectious diseases, diabetes, Alzheimer syndrome, asthma, restenosis, atherosclerosis, leukemia, arthritis, and more. Among all the PKs huge family, Tyrosine Kinases (TKs) have been described as key point of those regulatory mechanisms and so stated as promising drug targets for treating such diseases. As a result of this biological knowledge, there have been a lot of developments in this field, resulting in some interesting and commercial TKs selective inhibitors. The Laboratori de Síntesi de l’IQS has developed some highly efficient heterocyclic synthetic procedures, especially for the synthesis of pyrido[2,3-d]pyrimidines that are structurally closely related to some well stated TKs inhibitors. Unfortunately, some of the building blocks used in those methodologies have a very narrow commercial variety and are only available from unusual vendors. This is the case for arylguanidines. As a result, the accessible chemical space is shortened. So then, the present work deals with the establishment of general procedures for the synthesis of arylguanidines and how to couple them with our previous described methodologies in order to obtain pyrido[2,3-d]pyrimidine libraries. Aminoiminomethanesulfonic acid (AIMSOA) is selected as guanidination agent and a protocol is optimized by Experimental Design. The coupling of this guanidination with the one-pot multicomponent Victory reaction is also studied. Unfortunately, coupling reaction yields with arylguanidines are very low as a result of lack of nucleophilicity, methanol mediated degradation and nucleophilic competition with this reaction solvent. Pyridone condensation with arylguanidines in 1,4-dioxane is stated as methodological alternative in order to improve nucleophilicity of the arylguanidines. Surprisingly, this procedure does not yield the expected pyridopyrimidines but a family of new, not previously described, heterobicyclic compunds that can be converted to the desired pyridopyrimidines through Dimroth rearrangement. The overall yields for the final pyridopyrimidines are higher with this new procedure than with the previous methodologies. Finally, a new global strategy is developed for the diversity oriented synthesis of 2-arylamino substituted pirido[2,3-d]pyrimidines. Firstly, the heterobicyclic skeleton is build and, secondly, this skeleton is activated by bromination and diazotization. Finally, diversity is introduced by substitution reactions. During this development a pyridopyrimidine Wheland intermediate, never described before ,has been isolated and its structure spectroscopically confirmed. The subsequent treatment of this compound with DMSO yields a new dibrominated pyridopyrimidine dehydrogenated on the pyridone ring. In addition, some synthetic procedures for the conversion of 4-aminopirido[2,3-d]pyrimidines into their 4-oxo analogues have been established. Such methodologies are auseful alternative to our old strategies for the synthesis of this kind of compounds.
APA, Harvard, Vancouver, ISO, and other styles
47

Lai, Ting-Kai, and 賴亭愷. "Robert Schumann: Intermezzi, Op.4." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/398h5m.

Full text
APA, Harvard, Vancouver, ISO, and other styles
48

Heinrich, David. "Max Klinger's Intermezzi : a critical analysis." 2002. http://web4.library.adelaide.edu.au/theses/09ARM/09armh469.pdf.

Full text
Abstract:
Bibliography: leaf 83-86. A critical analysis of Intermezzo, a portfolio of twelve etchings published in 1881 by the German printmaker, Max Klinger (1857-1920) and held by the Art Gallery of South Australia. Recorded as Opus IV, Intermezzi is a relatively unknown and unusual work in Klinger's printmaking oeuvre. It is unlike Klinger's other graphic cycles in that it does not appear to be a related set of prints but a series of free fantasies without associative or thematic connection.
APA, Harvard, Vancouver, ISO, and other styles
49

Liu, Fang-I., and 劉芳宜. "The Study of Poulenc’s “Three Intermezzi”." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/78158583435277569587.

Full text
Abstract:
碩士
臺北市立教育大學
音樂學系教學碩士學位班
99
Francis Jean Marcel Poulenc was one of the most important composers in the 20th century solo piano works. The style of his music is very unique, which is simple with humor; also very elegant and romantic. The author had research on “Deux intermezzi” and “Intermezzo in A-flat Major”, which were composed in 1934 and 1943. The thesis is constructed with six chapters. Chapter one, introduction, expresses the motive, purpose and the research method of this study. Besides the general statement of Poulenc’s background, chapter two also focus on how his style of composition had been formed, transformed, and influenced in three periods. Chapter three describes the characters of Poulenc’s solo piano works in different period, also presents the major technique in composition of his solo piano works. Poulenc was prolific, producing a total number of 34 opuses for piano. Poulenc’s works fall into three distinct periods, each with its own characteristics. Early works reflected the influence of Erik Satie and Les Six with their bare, linear simplicity. Piano works from his second period were influenced by Chopin and Schumann. The method Poulenc tended to use in his composition was alike with those in romantic period. There are few fine late piano works, which are harder in technique. The research focus of chapter four is the development of intermezzi; also the detailed analysis of Poulenc’s three intermezzi. Intermezzo in C Major is in binary form, which creates fresh sound. Intermezzo in D-flat Major is built with longer phrasing and singing line. It shows both sides of Poulenc’s personality, conservative and creative. Poetic music phrasing is played in Intermezzo in A-flat Major with rich sound. In chapter five, music style of Poulenc’s three intermezzi will be discussed in three aspects, which are characters of the form, phrasing, and texture. All research will be concluded in chapter six.
APA, Harvard, Vancouver, ISO, and other styles
50

Lin, Chao-hsin, and 林昭欣. "A Study of Brahms’ Three Intermezzi, Op. 117." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/6bks3q.

Full text
Abstract:
碩士
國立中山大學
音樂學系研究所
106
Johannes Brahms (1833-1897) composed Fantasies, Op. 116, Three Intermezzi, Op. 117, Piano Pieces, Op. 118, Piano Pieces, Op. 119 during years of 1892 to 1893. There are fourteen of them titled Intermezzo among these twenty pieces in total. In his early compositional period, Brahms had employed the title of Intermezzo within the large-scale forms, such as the fourth movement of F Minor Piano Sonata No. 3, Op. 5, and Four Ballades, Op. 10-3. While compositions of piano character pieces flourishing in the nineteenth century, Brahms chose the simple formal structure as Intermezzo to describe his profound emotional world, which bringing a brand new exuberance for Romanticism. The research will concentrate on Brahms’ Three Intermezzi, Op. 117. There are three main chapters besides the preface and conclusion in this paper. The first chapter introduces Brahms’ life and musical experience; the second chapter discusses the historical background and the analysis of Brahms’ Three Intermezzi, Op. 117, including form, thematic materials, tonality, and the feature of developing variation technique. The third chapter focuses on exploring the interpretational thoughts of Brahms’ Intermezzos from the point of view of pianists, especially the poetic quotations suggested by Russian pianist Maria Yudina (1899-1970).
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography