To see the other types of publications on this topic, follow the link: ITI.
Dissertations / Theses on the topic 'ITI'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'ITI.'
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
Gradl, Christian. "Einflussfaktoren auf den periimplantären Knochenabbau von ITI Implantaten in augmentierten Kieferhöhlen." Diss., lmu, 2009. http://nbn-resolving.de/urn:nbn:de:bvb:19-103854.
Full text
2
Roßmann, Christian [Verfasser]. "Langzeitergebnisse enossaler dentaler Implantate am Beispiel des ITI-Implantatsystems / Christian Roßmann." Kiel : Universitätsbibliothek Kiel, 2015. http://d-nb.info/1078898359/34.
Full text
3
Moysés, Glauco Pereira. "Influência do formato do pilar na capacidade retentiva de copings metálicos cimentados sobre implantes." Universidade de Taubaté, 2008. http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=473.
Full textAbstract:
O presente estudo avaliou a influência do formato do pilar na capacidade retentiva de copings metálicos cimentados sobre implantes. Foram avaliados dois pilares de um mesmo sistema, com as mesmas indicações, mesma altura e mesmo grau de convergência, mas de desenhos diferentes. Dez pilares SynOcta RN e dez pilares sólidos RN de 5,5 milímetros, ambos fabricados pela Straumann USA, e utilizados para coroas e próteses fixas cimentadas, foram fixados com torque de 35 N/cm em vinte réplicas de implante previamente fixadas em blocos de resina. Vinte copings plásticos pré-fabricados para fundição foram encerados, incluídos, fundidos e usinados por um único operador. Posteriormente à inspeção dos copings metálicos em estereomicroscópio, os mesmos foram cimentados (Temp Bond NE) nos pilares, com carga de 5 kg mantida por dez minutos. Após as amostras terem sido armazenadas por 24 horas em 100% de umidade à temperatura ambiente, foram submetidas a ensaio de tração com velocidade de 5 mm/min até o deslocamento dos copings metálicos. A força necessária para o deslocamento foi registrada em kilograma-força e os dados analisados estatisticamente com auxílio do teste T de Student para amostras independentes. A média da força necessária para remoção dos copings metálicos cimentados sobre os pilares SynOcta (11,19 kg) foi estatisticamente superior à observada para os pilares sólidos (10,18 kg). Considerando as limitações deste estudo, podemos concluir que o desenho do pilar influencia significativamente a retenção de copings metálicos.This study evaluated the influence of the abutment design on the retention of cementretained, implant-supported metallic copings. Two abutments of the same system, with the same height, indications and total occlusal convergence, but of different designs were evaluated. Ten RN SynOcta abutments and ten RN solid titanium abutments both manufactured by Straumann USA and indicated for cement-retained single crowns and fixed partial dentures were tightened to 35Ncm on twenty implant analogs previously placed in resin blocks. Twenty plastic burnout copings were waxed, included, cast and machined by the same operator. After inspected under a stereomicroscope, the copings were cemented (Temp Bond NE) with load of 5 kg maintained for ten minutes. After this, the assemblies were stored for 24h in 100% humidity at room temperature and subjected to a pull-out test at a crosshead speed of 5 mm/min until the displacement of the metallic copings. The load required to dislodge each coping was recorded in kilogram-force and the data were statistically analyzed using the T student test for independent samples. The mean load necessary load to dislodge the metallic copings showed by SynOcta abutments (11,19 kg) was statistically higher than the one for the solid abutments (10,18 kg). With the limitations of this study, we can conclude that the design of the abutment influence significantly the retention of metallic copings.
4
Hope, Chris. "Errors in pigeons' memory for number, effects of ITI and DI illumination." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ65198.pdf.
Full text
5
Borell, Phillip John. "He iti hoki te mokoroa: Maori Contributions to the Sport of Rugby League." Thesis, University of Canterbury. Aotahi: School of Maori and Indigenous Studies, 2012. http://hdl.handle.net/10092/7052.
Full textAbstract:
The aim of this thesis is to explore the influences and contributions of Māori to the establishment and development of the sport of rugby league in New Zealand. The overarching question of this thesis is how have Māori influenced and contributed to the development of rugby league in New Zealand? This thesis examines the international social history of rugby league from the origins of rugby league as a sport following the split in rugby union in England through to the contemporary status of Māori within the game as an elite sport in New Zealand and overseas. By examining Māori involvement in rugby league it is my intention to place Māori at the centre of the explanation for the establishment and development, past and present, of the sport in New Zealand, and also globally.
While there have been some previous accounts of the affiliation between Māori and rugby league (Coffey and Wood, 2008; Greenwood, 2008; Falcous, 2007) this thesis compiles accounts from disparate sources in order to outline the history of Māori involvement and achievement in the development stages of rugby league.
Key areas of focus for this thesis include the early Māori tours of 1908 and 1909, the development of the New Zealand Māori Rugby League as an independent entity separate from the New Zealand Rugby League and the contemporary influences of Māori on rugby league. This thesis will show that the early Māori tours were crucial to the development of Australian, New Zealand and, to an extent, British rugby league. It will also provide insight in to the inclusive nature of rugby league through the inclusion of Māori initiatives such as the development of a Māori Rugby League. The final section of this thesis will draw on the contemporary influence that Māori have on the sport through an examination of player migration and how Māori have emerged as a ‘donor culture’ providing high numbers of elite athletes to the world’s premier rugby league competitions.
It can be argued that the mobility of Māori, in the form of touring teams and migrant players, has sustained the sport internationally while paradoxically, and simultaneously, depleting the game domestically. In this account Māori emerge, not as an appendix in a history of the game but rather as a crucial donor culture for the establishment and continued success of rugby league.
6
SARACENO, PIER PAOLO. "THE INTEGRATED TERRITORIAL INVESTMENT (ITI) AS A TOOL FOR GOVERNING THE RURALURBAN LINKAGES: EVIDENCE FROM POLAND." Thesis, Blekinge Tekniska Högskola, Institutionen för fysisk planering, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-12919.
Full textAbstract:
The growing awareness of functional linkages between rural and urban territories has led to a re-thinking of the rural-urban dichotomy. This was flanked by a more general reconceptualization of space, directly coming from the rise of spatial planning and the shifting process from government to governance. Thus, the concept of “soft space” came to the fore, defined as the space of governance and integrated approach. The EU Commission has launched a new instrument aimed at fostering the territorial approach of the new Cohesion Policy, namely the Integrated Territorial Investment (ITI). This research wants to investigate the added value of the ITI instrument in governing and institutionalizing the rural-urban linkages at the metropolitan level. In doing so, the author has created a conceptual framework based on three main concepts directly coming from the concept of soft space, namely institutionalization, governance capacity, and integrated approach. The empirical study is focused on Poland, in particular, dealing with the case of Warsaw, Krakow, and Wroclaw. As a result, this research argues that the ITI in Poland has represented an attempt to improve the cooperation between capital cities and their surrounding areas, even though its outcomes can be questionable.
7
Piva, Frank. "L'inter-alpha-trypsine inhibiteur (iti) : preparation a l'echelle industrielle ; etude de sa degradation in vitro par l'elastase leucocytaire humaine." Lille 2, 1995. http://www.theses.fr/1995LIL2P253.
Full text
8
Wellman, David Allen, and mikewood@deakin edu au. "Towards an integration of theories of achievement motivation." Deakin University. School of Psychology, 2001. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051017.123821.
Full textAbstract:
This thesis investigated children's school achievement in terms of an integration of three theories of achievement motivation. The three theoretical outlooks were expectancy-value theory (EVT), implicit theories of intelligence (ITI), and flow theory (FT). The first of two studies was an exploratory investigation of the effectiveness of each theory independently and combined to predict children's achievement in four school subjects. The subject areas were maths, reading, instrumental music and sport. Participants were 84 children (40 females and 44 males) aged 9 to 10 years, one of each child's parents, and school teachers of each child in the four subject areas. All data were collected through questionnaires based on the three models. The results indicated that EVT and FT but not ITI accounted for a significant amount of the variance in children's achievement, including effects for subject area and gender. A second confirmatory study tested EVT, FT and an integrated model for the prediction of achievement in maths, reading and instrumental music. The participants were a further 141 children (74 females and 67 males) aged 10 to 11 years, and a parent and teachers of each child. Data collection using questionnaires occurred early in the school year (Timel) and approximately five months later (Time2). For EVT, children and parents competence beliefs were significant predictors of children's achievement in each subject area. Females tended to believe themselves more competent at reading and instrumental music and also valued these subjects more highly than boys. Modeling results for flow theory indicated that children's emotional responses to classes (happiness and confusion) were significant predictors of achievement, the type of emotion varying between subject areas and time periods. Females generally had a more positive emotional reaction to reading and instrumental music classes than males did. The integrated model results indicated significant relationships between EVT and flow theories for each subject area, with EVT explaining most achievement variance in the integrated model. Children's and parents competence beliefs were the main predictors of achievement at Timel and 2, Subject area and gender differences were found which provide direction for future research. Anecdotal reports of parents and teachers often attest to individual differences in children's involvement in various school domains. Even among children of apparently similar intelligence, it is not uncommon to find one who likes nothing better than to work on a mathematics problem while another much prefers to read a novel or play a musical instrument Some children appear to achieve good results for most of the activities in which they are engaged while others achieve in a less consistent manner, sometimes particularly excelling in one activity. Some children respond to failure experiences with a determination to improve their performance in the future while others react with resignation and acceptance of their low ability. Some children appear to become totally absorbed in the activity of playing sport while others cannot wait for the game to end. The primary research objective guiding the current thesis is how children's thoughts and feelings about school subjects differ and are related to their school achievement. A perusal of the achievement motivation literature indicates several possible models and concepts that can be applied to explain individual differences in children's school achievement. Concepts such as academic self-concept, multiple intelligences, intrinsic and extrinsic motivation, self-beliefs, competence beliefs, subjective task values, mastery and performance goals, Flow experiences and social motivation are just some of the constructs used to explain children's achievement motivation, both within and between various activity domains. These constructs are proposed by researchers from different theoretical perspectives to achievement motivation. Although there is much literature relevant to each perspective, there is little research indicating how the various perspectives may relate to each other. The current thesis will begin by reviewing three currently popular theoretical orientations cited in achievement motivation research: subjective beliefs and values; implicit theories of intelligence, and flow experience and family complexity. Following this review, a framework will be proposed for testing the determinants of children's school achievement, both within each of the three theoretical perspectives and also in combination.
9
Martin-Vandelet, Nathalie. "Inhibiteur inter-alpha de la trypsine : assemblage et sécrétion des chaînes recombinantes dans les cellules COS." Rouen, 1998. http://www.theses.fr/1998ROUES009.
Full textAbstract:
Les protéines de la famille de l'inhibiteur inter-α de la trypsine (ITI) humain sont synthétisées et structurées dans le foie à partir de 4 précurseurs protéiques : 3 chaînes lourdes H1, H2, H3 et une chaîne légère L. Ces précurseurs maturent et donnent naissance aux formes HC et à la bikunine. Trois protéines de cette famille ont été identifiées dans le plasma humain : l'ITI, l'inhibiteur pré-α de la trypsine (Pαl) et la protéine HC2-bikunine. Les chaînes constitutives de ces protéines sont assemblées par une structure covalente particuliére, de nature glycosidique, composée de glycosaminoglycanne. Cette liaison, une fois constituée, est intitulée Protéine-Glycosaminoglycanne-Protéine ou PGP. Compte-tenu de la complexité de la structure de ces protéines, nous avons mis en oeuvre un système original de transfection permettant l'expression des chaînes recombinantes H1, H2, H3 et L dans les cellules COS. La première partie de notre étude porte sur la biosynthèse de chaque chaîne constitutive des protéines de la famille de l'ITI en utilisant le modèle de transfection transitoire dans les cellules COS. Chaque chaîne possède une synthèse et une maturation indépendantes des autres chaînes (à l'exception de H2). La seconde partie de notre étude tend à mettre en évidence les mécanismes d'assemblages des chaînes H1, H2, H3 et L dans le but de générer les protéines de la famille de l'ITI. Dans notre système, quelle que soit la combinaison engageant la chaîne H1, la forme HC1 n'est jamais observée dans une protéine pluricaténaire. La maturation de H1 en HC1 et l'assemblage de HC1 au sein des protéines pluricaténaires se feraient selon un mécanisme différent de ceux des chaînes H2 et H3. Les chaînes H2 et H3 possèdent des comportements opposés au cours de l'assemblage. Le clivage de la chaîne H3 précéderait l'assemblage, alors que celui de H2 serait concomitant ou postérieur à son assemblage au sein des protéines pluricaténaires. D'autre part, la protéine Pαl observée dans notre modèle apparaît être un produit de synthèse alors que la protéine HC2-bikunine qui n'est jamais observée dans notre système représenterait un produit de dégradation de la forme ITI-like. La réalisation de la liaison originale PGP commune aux protéines pluricaténaires de l'ITI, ne nécessite pas la machinerie cellulaire de l'hépatocyte.
10
Shah, Hamzei G. Hossein. "Decision tree learning for intelligent mobile robot navigation." Thesis, Loughborough University, 1998. https://dspace.lboro.ac.uk/2134/6968.
Full textAbstract:
The replication of human intelligence, learning and reasoning by means of computer algorithms is termed Artificial Intelligence (Al) and the interaction of such algorithms with the physical world can be achieved using robotics. The work described in this thesis investigates the applications of concept learning (an approach which takes its inspiration from biological motivations and from survival instincts in particular) to robot control and path planning. The methodology of concept learning has been applied using learning decision trees (DTs) which induce domain knowledge from a finite set of training vectors which in turn describe systematically a physical entity and are used to train a robot to learn new concepts and to adapt its behaviour. To achieve behaviour learning, this work introduces the novel approach of hierarchical learning and knowledge decomposition to the frame of the reactive robot architecture. Following the analogy with survival instincts, the robot is first taught how to survive in very simple and homogeneous environments, namely a world without any disturbances or any kind of "hostility". Once this simple behaviour, named a primitive, has been established, the robot is trained to adapt new knowledge to cope with increasingly complex environments by adding further worlds to its existing knowledge. The repertoire of the robot behaviours in the form of symbolic knowledge is retained in a hierarchy of clustered decision trees (DTs) accommodating a number of primitives. To classify robot perceptions, control rules are synthesised using symbolic knowledge derived from searching the hierarchy of DTs. A second novel concept is introduced, namely that of multi-dimensional fuzzy associative memories (MDFAMs). These are clustered fuzzy decision trees (FDTs) which are trained locally and accommodate specific perceptual knowledge. Fuzzy logic is incorporated to deal with inherent noise in sensory data and to merge conflicting behaviours of the DTs. In this thesis, the feasibility of the developed techniques is illustrated in the robot applications, their benefits and drawbacks are discussed.
11
Alcena, Reynolds. "Information Technology Infrastructure: Global Economy and National Development in Haiti." ScholarWorks, 2018. https://scholarworks.waldenu.edu/dissertations/4830.
Full textAbstract:
Political and environmental chaos recently experienced in Haiti has damaged the economic sector and telecommunication infrastructure. Developmental data from Haiti show 3 major trends: inadequate social and economic development, insufficient benefits from the global economy, and poorly planned information technology infrastructure (ITI). The specific problem addressed in this study is a knowledge gap in the views of stakeholders within Haiti's national culture on how the country's ITI can be developed to better engage Haiti in 21st century global and digital economy. The purpose of this qualitative case study was to explore the views of 48 expert participants regarding ITI development within Haiti's national culture to better engage Haiti with the 21st century global and digital economy. To satisfy the goal of this exploratory research a case study research design was used, and data were collected from multiple sources including in-depth interviews of 48 participants, observational field notes, and archival documentation. The analysis of the archival data, online surveys, and semi-structured interviews of expert informants revealed that nationwide broadband internet availability has been achieved, which has resulted in internet usage increasing from 2% in 2002 to 12% in 2009. The study participants noted the lack of reliable access to electricity limits the implementation of ITI in the nation. Legislation and financial investment are needed to improve ITI in Haiti. The academic significance and social change implications of the study include filling the knowledge gap of the status of ITI in Haiti, helping the national development of a modernized ITI well-connected to the global economy, and a better quality of life for Haiti's people.
12
Carlson, William E. "Evaluating Hydrologic Controls on Fish and Macroinvertebrate Communities in Ohio’s Western Allegheny Plateau." Ohio University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1149193823.
Full text
13
Botha, Elsabe. "Information technology governance frameworks in higher education in South Africa : a paradigm shift / Elsabe Botha." Thesis, North-West University, 2012. http://hdl.handle.net/10394/8657.
Full textAbstract:
Good corporate governance has, in recent years, been placed on centre stage
worldwide and several frameworks have been put in place to enable organisations
as well as higher education institutions to adhere to effective IT governance with
regards to IT service delivery and support. At the same time, demand from users
for access to corporate resources with their own personal devices other than
desktop or laptop computers and options such as cloud computing, social media
and mobility have converged into a renewed driving force influencing all IT
decisions regarding service delivery and support, whilst higher education
institutions attempt to comply with governance regulations.
The aim of this study was to investigate whether ITIL as an IT governance
framework is still applicable and relevant to a changed service delivery context in
IT service delivery departments in the higher education sector in South Africa.
Higher education in South Africa has not been excluded from adhering to good
governance and the draft Regulations for Reporting by Higher Education
Institutions have been updated with the recommendations of King III which, for the
first time, addressed IT governance and insisted on management to implement an
IT governance framework. ITIL is one of the most widely used governance
frameworks, however its position as a technology on the Gartner Hype Cycles for
Education for 2011 and 2012 displayed a move backwards from being widely
understood to a display of waning interest amongst institutions in the education
sector worldwide.
Exploratory research found that ITIL is still valued as a governance framework in
higher education in South Africa however staff members in IT support departments
displayed a resistance to change and also found it difficult to implement ITIL
processes. This is, however, not primarily due to a changing IT service delivery
context. Findings also indicated that ITIL should be considered as a set of
guidelines and best practices and not a governance framework as such.
Recommendations towards a paradigm shift regarding ITIL as a governance
framework per se as well as a proposal towards a possible alternative conceptual
IT governance framework incorporating only ITIL guidelines and best practices as
well as COBIT for risk management were put forward.Thesis (MBA)--North-West University, Potchefstroom Campus, 2013
14
Karoussis, Ioannis K. "A 10-year prospective cohort study of the ITI® dental implant system : A. effect of implant design on survival and success rates: a comparison between hollow-screws, hollow-cylinders and angulated hollow-cylinders : B. long-term implant prognosis in patients with and without a history of chronic periodontitis /." [S.l.] : [s.n.], 2002. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.
Full text
15
Marcin, Juraj. "Metriky kvality řízení IT." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2019. http://www.nusl.cz/ntk/nusl-403116.
Full textAbstract:
This thesis deals with metrics of IT management. The main goal of the thesis is to design a web application for assessing the quality of IT service management. The resulting application will determine the aforementioned quality based on the specified criteria and values. In the first part of the thesis, there are elaborated current methodologies, which are focused on quality assessment of IT administration and management. These methodologies also include metrics to assess this quality. In the third chapter, the quality assessment process is processed using the IT Quality Index. The fourth and fifth chapter describes the design and implementation of the web application itself. Validation of application results is processed in the fifth chapter. The created application is deployed on the server and used to assess IT quality. In the last chapter of this work is described practical use of work results and possible extensions of the web application.
16
Rudqwist, Lucas, and Max Magnusson. "Framtidens reseplanerare : Hur man designar en mobil, dynamisk & multimodal reseplanerare." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188828.
Full textAbstract:
Detta arbete tar en titt in i framtidens möjligheter för mobila, dynamiska och multimodala reseplanerare. Detta genom att ställa frågorna: Hur kan en multimodal reseplaneringstjänst med data och information från befintliga resurser se ut och fungera i Stockholms län? Hur designar man en väl fungerande mobil resetjänst som förmedlar dynamiska multimodala transportvägar med god användbarhet? Vilken information och vilka system finns tillgängliga öppet och vilken information måste framtidens reseplanerare själv skapa? Genom skapandet av prototyper och användartester i tre steg knyter vi samman tidigare genomförd forskning med den faktiska data och information som finns tillgängligt öppen i Stockholms län. Detta för att visa hur framtidens reseplanerare kan komma att se ut och fungera. Den slutgiltiga designen visar hur morgondagens reseplanerare sömlöst och enkelt kommer kunna guida användaren att resa multimodalt genom att koppla ihop flera olika trafikinformationssystem, elektroniska betalsystem och smarta mobiltelefoners inbyggda resurser (så som t.ex. dess GPS/A-GPS). Som komplement till designförslaget presenterar vi de tre komponenterna som, enligt vår studie, är mest kritiska för att lyckas med framtidens reseplanerare.This thesis takes a look at the future of mobile, dynamic and multimodal travel planners by asking the questions: How can a multimodal travel planner with data and information from existing resources be designed and function in Stockholm County? How do you design a well-functioning mobile travel planner that delivers dynamic multimodal travel with high usability? What information and what systems are publicly accessible today and what information must the future travel planner create by itself? By creating prototypes and by usability testing in three steps we tie previous research together with available data and information publicly accessible in Stockholm County. The goal of this is to show how a future travel planner can look and work. The final design of the travel planner of tomorrow shows how seamless and simple it will be to guide the user to multimodal travel. All this by connecting traffic information systems, electronic payment methods and smartphones built in resources (e.g. its GPS/A-GPS). As a complement to the design we present three key components that, according to this study, are the most critical to succeed with a future travel planner.
17
Meng, Dong. "Approximate Message Passing for Multi-Carrier Transmission over Doubly Selective Channels." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1339602506.
Full text
18
Costa, Bruna de Araújo. "Síntese, caracterização e estudo termoanalítico dos tereftalatos de térbio (III), disprósio (III), hólmio(III), érbio (III), túlio (III), ítérbio (III), lutécio (III) e ítrio(III)." Universidade Federal de Goiás, 2015. http://repositorio.bc.ufg.br/tede/handle/tede/4919.
Full textAbstract:
Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2015-11-19T13:41:11Z
No. of bitstreams: 2
Dissertação - Bruna de Araújo Costa - 2015.pdf: 2210564 bytes, checksum: 7b069b902e2614050b48d33e51ec848f (MD5)
license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2015-11-19T13:42:58Z (GMT) No. of bitstreams: 2 Dissertação - Bruna de Araújo Costa - 2015.pdf: 2210564 bytes, checksum: 7b069b902e2614050b48d33e51ec848f (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)
Made available in DSpace on 2015-11-19T13:42:58Z (GMT). No. of bitstreams: 2 Dissertação - Bruna de Araújo Costa - 2015.pdf: 2210564 bytes, checksum: 7b069b902e2614050b48d33e51ec848f (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2015-05-22
In this work the synthesis of the heavy lanthanides and yttrium were carried out, using the direct addition of the sodium terephthalate in the respectives metallic chloride solutions. The synthesized compounds were characterized by simultaneous Thermogravimetry and differential scanning calorimetry analysis (TG-DSC), differential scanning calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FTIR), thermogravimetric analyses coupled to Fourier Transform Infrared spectroscopy (TG-FTIR), EDTA complexometry and X ray powder Diffractometry. From the data, it was possible to obtain the general formula of each compound (Ln2(TFta)3.nH2O, where Ln = Tb(III), Dy(III), Ho(III), Er(III), Tm(III), Yb(III), Lu(III) and Y(III), TFta = terephthalate, and n = 4,5 (Tb, Dy and Ho), 4,0 (Er, Tm and Y), 5,0 (Yb) and 6,5 (Lu)), as well as unreported information about the thermal properties, in air atmosphere, thermal stability; molar dehydration enthalpy; main evolved gases from thermal decomposition (H2O, CO2 and CO), the coordination mode between metal and ligand and performing the comparison of the results of X -ray diffraction of the compounds synthesized by the powder method using and the single crystal obtained by hydrothermal synthesis reported in the literature.
A pesquisa na área de compostos de coordenação com ligantes à base de ácidos carboxílicos aromáticos e metais os lantanídeos e ítrio tem sido recorrente devido as suas promissoras aplicabilidades. O presente trabalho tem como objetivo realizar as sínteses dos tereftalatos de lantanídeos pesados e ítrio pelo método direto entre soluções de tereftalato de sódio e os respectivos cloretos metálicos e caracterização dos mesmos por meio das técnicas de análise termogravimétrica e calorimetria exploratória diferencial simultânea (TG-DSC), Calorimetria exploratória diferencial (DSC), Espectroscopia de Infravermelho por Transformada de Fourrier (FTIR), Complexometria por EDTA e Difratometria de raio X pelo método do pó. A partir das informações obtidas desse estudo termoanalítico detalhado, em atmosfera de ar, foi possível obter informações inéditas, como a fórmula geral Ln2(TFta)3.(H2O)2.nH2O, onde Ln corresponde aos Tb(III), Dy(III), Ho(III), Er(III), Tm(III), Yb(III), Lu(III) e Y(III), TFta o tereftalato e n= 2,5 (Tb, Dy e Ho), 2,0 (Er, Tm e Y), 3,0 (Yb) e 4,5 (Lu); estabilidade térmica; grau de hidratação dos compostos; entalpia molar média por molécula de água; indicar os principais produtos gasosos produzidos pela decomposição térmica (H2O, CO2 e CO); sugerir coordenação em ponte entre entre metal e o ligante e realizar a comparação dos resultados de difratometria de raio x dos compostos sintetizados pelo método do pó com os monocristais obtidos por síntese difusão lenta apresentados na literatura.
19
Eckhart, Eric Ashton. "A search for charmless baryonic B meson decays at CLEO." Columbus, OH : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1054568796.
Full textAbstract:
Thesis (Ph. D.)--Ohio State University, 2003.Title from first page of PDF file. Document formatted into pages; contains xv, 133 p.: ill. Includes abstract and vita. Advisor: Richard D. Kass, Dept. of Physics. Includes bibliographical references (p. 132-133).
20
Nunes, Wilhan Donizete Gonçalves. "Síntese, caracterização e estudo termoanalítico dos isoftalatos de lantânio (III), cério (III), praseodímio (III), neodímio (III), samário (III), európio (III) e gadolínio (III)." Universidade Federal de Goiás, 2015. http://repositorio.bc.ufg.br/tede/handle/tede/4777.
Full textAbstract:
Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2015-10-26T14:35:46Z
No. of bitstreams: 2
Dissertação - Wilhan Donizete Goncalves Nunes - 2015.pdf: 3578260 bytes, checksum: b74d96b75087575dad44f2ad3876facf (MD5)
license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2015-10-26T14:40:34Z (GMT) No. of bitstreams: 2 Dissertação - Wilhan Donizete Goncalves Nunes - 2015.pdf: 3578260 bytes, checksum: b74d96b75087575dad44f2ad3876facf (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)
Made available in DSpace on 2015-10-26T14:40:34Z (GMT). No. of bitstreams: 2 Dissertação - Wilhan Donizete Goncalves Nunes - 2015.pdf: 3578260 bytes, checksum: b74d96b75087575dad44f2ad3876facf (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2015-01-19
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
In the last years the interest in the chemistry of coordination compounds of polycarboxylic acids and lanthanides or transition metals has substantially increased, due to their interesting characteristics, such as gas storage (Metal-organic frameworks compounds), luminescence and magnetic properties. A literature survey reveals few studies investigating the properties of lighter lanthanide coordination compounds obtained by soft chemistry routes, and mainly the study of their thermal properties in air atmosphere. In this work the reaction between sodium isophthalate and lighter lanthanides solutions (La – Gd) except Pm, led to the formation of two new coordination compounds, and five already reported in the literature, whose thermal behavior and infrared spectra was investigated. The compounds was characterized by simultaneous Thermogravimetric and differential scanning calorimetry analysis (TG-DSC), differential scanning calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FTIR), thermogravimetric analyses coupled to Fourier Transform Infrared spectroscopy (TG-FTIR) and EDTA complexometry. With the TG-DSC and TG-FTIR data was possible to determinate the general formula of compounds (Ln2(L)3.nH2O, where Ln = La – Gd, except Pm, L = isophthalate, n varies from 2 to 13,5), thermal stability and molar dehydration enthalpy per water molecule, as well as the main evolved gases during thermal decomposition (H2O, CO2 and CO). The FTIR spectra suggest that metal-ligand coordination occurs in the bridging bidentate mode.
Nos últimos anos, tem surgido um grande interesse na química dos compostos de coordenação de ácidos dicarboxílicos com metais de transição ou lantanídeos, devido a sua aplicabilidade em compostos de estrutura molecular porosa (Metal-organic frameworks) e interessantes propriedades luminescentes. Uma revisão na literatura revela a falta de trabalhos estudando de forma sistemática as propriedades térmicas de compostos de coordenação de lantanídeos leves com o ligante isoftalato em atmosfera de ar, principalmente obtidos por meio de vias sintéticas classificadas como brandas. Neste trabalho, foi realizada a síntese dois novos compostos de coordenação, e cinco já reportados pela literatura em diferentes trabalhos, utilizando a metodologia de reação direta entre soluções de ácido isoftálico (ácido 1,3- benzenodicarboxílico) e de lantanídeos (La – Gd) exceto Pm. Os compostos sintetizados foram caracterizados e estudados através das técnicas de análise termogravimétrica e calorimetria exploratória diferencial simultânea (TG-DSC), Calorimetria exploratória diferencial (DSC) e Espectroscopia de Infravermelho por Transformada de Fourrier (FTIR) e Complexometria por EDTA. A partir das curvas TG-DSC e TG-FTIR foi possível a determinar a estequiometria dos compostos, com fórmula geral Ln2(L)3.nH2O (Ln = La a Gd, exceto Pm, L = isoftalato) n variando de 2 a 13,5, bem como estabilidade térmica, grau de hidratação dos compostos e os principais produtos gasosos formados pela decomposição térmica (H2O, CO2 e CO). Através das análises de FTIR pode-se sugerir que o tipo de coordenação entre metal e o ligante é bidentado em ponte.
21
Simancas, Coloma Raquel. "Síntesis de nuevos materiales zeolíticos empleando agentes directores de estructura fosforados." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/52025.
Full textAbstract:
[EN] This thesis is focused on the synthesis of new zeolitic structures using phosphorus containing compounds as structure directing agents, and the study of the influence of the presence of phosphorus in the adsorption capacity and acid properties of the zeolites.
The phosphazene bases and aminophosphonium cations used in this work have yielded to zeolites with new crystalline structures (ITQ-45, ITQ-52, ITQ-58), as well as have developed new routes of synthesis of already known zeolites, but broadening their range of compositions (DON, RTH, ITE, STF), and these have allowed obtaining the synthetic analogue (ITQ-47) of the natural zeolite boggsite (BOG) by first time.[ES] La presente tesis doctoral se centra en la síntesis de nuevas estructuras zeolíticas empleando como agentes directores de estructura compuestos que contienen fósforo y el estudio de la influencia de la presencia de fósforo en la capacidad de adsorción y en las propiedades ácidas de las zeolitas. Las bases de fosfaceno y cationes aminofosfonio empleados en este trabajo han permitido obtener zeolitas con nuevas estructuras cristalinas (ITQ-45, ITQ-52 e ITQ-58), así como desarrollar nuevas rutas de síntesis de zeolitas conocidas ampliando el rango de composiciones (DON, RTH, ITE, STF) y obtener por primera vez el análogo sintético (ITQ-47) de la zeolita natural boggsita (BOG).
[CAT] La present tesi doctoral es centra en la síntesi de noves estructures zeolítiques emprant com agents directors d'estructura compostos que continguen fòsfor, i la influència de la presència de fòsfor en la capacitat d'adsorció i en la fortalesa àcida de les zeolites. Les bases de fosfazè i cations aminofosfoni emprats en aquest treball han permès obtindre zeolites amb noves estructures cristal¿lines (ITQ-45, ITQ-52 e ITQ-58), així com desenvolupar noves rutes de síntesi de zeolites conegudes ampliant el rang de composicions (DON, RTH, ITE, STF) i obtindre per primera vegada l'anàleg sintètic (ITQ-47) de la zeolita natural boggsita (BOG).
Simancas Coloma, R. (2015). Síntesis de nuevos materiales zeolíticos empleando agentes directores de estructura fosforados [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/52025
TESIS
22
Roche, Jason T. "Conrad III and the Second Crusade in the Byzantine Empire and Anatolia, 1147." Thesis, St Andrews, 2008. http://hdl.handle.net/10023/524.
Full text
23
wennmyr, hugo leonardo alexander. "ini." Thesis, KTH, Arkitektur, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146069.
Full textAbstract:
Preporsition for bachelor thesis project, working from the inside and out. Emphasising spatial quality and experience, More or less ignoring form and program. I’ve had issues with these aspects in earlier project, the form or the program takes alot of place in the project. I haven’t tried this approach before, it’s an attractive thought to allow the project take a form of it’s own, enclosing those spaces i create. The initial concept was to place the pools on the ground (not digging them into the ground) making them volumes that divide and define spaces. Also shifting the interaction between those in the water and those walking alongside the edges. The ceiling should mirror the spaces created by the pool. sinking down over some areas and opening up above others. My process is usually exploratory, I find something i can’t undestand or something where i can’t image the outcome. I play with this until patterns emerge or i feel i can control it. In that stage the inspiration vains. It’s magical to experiencing new things and constantly learning. When i come to that state the project tends to generate itself. During this thesis project I want to define my own process. I want to put it into words in order to understand it myself, but also in order to communicate it to others. Map it all out and hopefully find what makes a project selfgenerating. Filter everything and find the essence of what i’ve learned from my education.
24
Muñoz, Muñoz Juan Pablo. "Separación de lantano (III), cerio (III), praseodimio (III) y neodimio (III) mediante extracción por solventes utilizando extractantes organofosforados." Tesis, Universidad de Chile, 2011. http://www.repositorio.uchile.cl/handle/2250/115867.
Full textAbstract:
Memoria para optar al título de QuímicoEn esta Memoria de Título se estudió la extracción y separación de lantano (III), cerio (III), praseodimio (III) y neodimio (III) mediante extracción por solventes utilizando como agentes transportadores los extractantes comerciales D2EHPA, PC88A, LIX 272 y CYANEX 301. El análisis de las curvas de especiación química de los elementos tierras raras (ETR) en fase acuosa en función del pH permiten establecer que en el rango de pH de trabajo los iones de La, Ce y Pr se encuentran principalmente como iones complejados con nitrato. Sin embargo, entre pH 1 y 2 se presenta una competencia con la especie ETR-sulfato. Debido a que el ión nitrato presenta un poder ligante muy débil, en la práctica es posible considerar que los iones ETR se encuentran como especies libres cuando se presenta una competencia frente a un ligante más fuerte, tal como sería en el caso de los extractantes organofosforados, mientras que, la especie ETR-sulfato sería la única especie que podría interferir en la extracción de los iones de ETR. Los experimentos de extracción por solventes realizados entre cada uno de los iones metálicos de ETR con cada uno de los extractantes propuestos, se llevaron a cabo considerando las siguientes variables que afectan al proceso: la concentración de cada uno de los extractantes en la fase orgánica, de cada ión metálico presente en la fase acuosa y el pH de la solución acuosa de alimentación. Un análisis de los resultados obtenidos para la variación en la concentración de extractante indicó que, los valores más altos de extracción se logran cuando se utilizan 40 mM. Los resultados varían dependiendo del ión metálico observándose siempre las mayores extracciones para Pr, y en menor grado consecutivo Nd, Ce y La. Los resultados obtenidos para la variación de pH inicial indicaron que, en general, el porcentaje de extracción se incrementa con el aumento del pH inicial de la solución acuosa de alimentación en todos los experimentos realizados. En el caso de los extractantes D2EHPA y PC88A se alcanzaron extracciones sin una distinción práctica entre cada uno de los iones ETR. Mientras que, en el caso de los extractantes LIX 272 y CYANEX 301 se observó que hay diferenciación clara en el grado de extracción para los distintos ETR. Los resultados obtenidos para la variación en la concentración de ión metálico inicial permitieron aseverar que, en general, el grado de extracción disminuye con el incremento de la concentración de ión metálico en la solución de alimentación inicial para los cuatro extractantes estudiados. Los experimentos de retroextracción de los iones metálicos de ETR presentaron una tendencia moderada a la disminución con el incremento de la concentración de H2SO4 en la fase acuosa para los todos los complejos ETR-extractante estudiados. Sólo se observó que en el caso de los complejos ETR-LIX 272 se lograron porcentajes de retroextracción intermedios que podían ser utilizados en una ruta de separación de los iones ETR. El análisis de los estudios de equilibrio permitió apreciar claramente que la extracción de Pr es la más favorecida en todos los casos, y en menor grado consecutivo Nd, Ce y La. Adicionalmente, se pudo observar que desde el punto de vista de los extractantes el D2EHPA es el que más favorece la reacción de extracción y en menor grado consecutivo PC88A, LIX 272 y CYANEX 301. A partir de un análisis de todos los datos obtenidos se pudo deducir que el extractante LIX 272 cumplió de mejor manera con el requisito de extraer preferentemente alguno de los iones de ETR en ciertas condiciones y, de este modo, poder plantear de esa manera alguna posible ruta de separación. Los estudios cinéticos de extracción indicaron que en general es el Pr el que reacciona más rápidamente, y el La el que reacciona más lentamente, con todos los extractantes. Del mismo modo, se observa que el extractante que reacciona de manera más rápida con los iones metálicos es el D2EHPA y en menor grado consecutivo PC88A, LIX 272 y CYANEX 301. Por otro lado, los experimentos cinéticos de retroextracción indicaron que los complejos ETR-D2EHPA y ETR-PC88A son los que más rápidamente liberan los iones de ETR. Asimismo, el complejo ETR-CYANEX 301 es el que los libera más lentamente. La ruta de separación de iones metálicos en dos etapas propuesta en este estudio utilizando como extractante el LIX 272 cumple en cierta medida con el objetivo planteado. En la primera etapa de extracción se logró incrementar la pureza del La en la fase acuosa hasta un 40%, aproximadamente. Una proyección de este resultado en 8 contactos permitiría obtener un refino constituido exclusivamente por La, alcanzando a aislar cerca del 70% del La inicial. En la segunda etapa de la ruta de separación, que considera la retroextracción de los complejos ETR-LIX 272, se logró aislar cerca del 74% del Ce inicial con una pureza superior al 98%. Una proyección de 3 contactos para esta etapa permitiría obtener una fase acuosa final con un 99,97% de pureza de Ce y con un rendimiento global del proceso de un 54,8%. Esta ruta de separación por equilibrios deja el problema de separación relegado solamente a la dupla Pr y Nd. Por otro lado, la diferencia en un orden de magnitud de las constantes cinéticas de retroextracción para los complejos Pr-LIX 272 y Nd-LIX 272 permitiría proyectar una separación de ambos iones en el tiempo
The extraction and separation of lanthanum (III), cerium (III), praseodymium (III), and neodymium (III) was studied by means of solvent extraction using D2EHPA, PC88A, LIX 272, and CYANEX 301 as extractant. The analysis of the chemical speciation curves of rare earth elements (REE) in aqueous phase as a function of pH allow to establish that in the working pH range the lanthanum, cerium, and praseodymium ions are complexed mainly with nitrate. However, between pH 1 and 2 a competition with REE-sulfate species is observed. Due to the nitrate ion has a very weak binding power, in fact it is possible to consider that REE ions are as free species when there is a competition with a stronger binder, as would be the case of organophosphorus extractants, while REE-sulfate species would be the only species that could interfere in the extraction of REE ions. The solvent extraction experiments, performed between each of the metal ions of REE with each of the proposed extractants, were carried out considering the following variables that affect the process: the concentration of each of the extractants in the organic phase, the concentration of each metal ion present in the aqueous phase and the pH of the aqueous feed solution. An analysis of the obtained results for the variation in the extractant concentration indicated that the highest values of extraction are achieved when using 40 mM. Results vary depending on the metal ion, always showing a preference for the praseodymium and in less consecutive degree for neodymium, cerium, and lanthanum. The obtained results for the variation of initial pH indicated that, in general, the extraction percentage increases with rising initial pH of the aqueous feed solution in all experiments. While in the case of extractants D2EHPA and PC88A no practical distinction between each of the REE ions were achieved, in the case of extractants LIX 272 and CYANEX 301 it was noted that there was clear difference in the degree of extraction for different REE. The results obtained for the variation in initial metal ion concentration allowed to assert that, in general, the extraction degree decreases while increasing metal ion concentration in the initial feed solution for the four extractants studied. Stripping experiments of REE metal ions showed a moderate tendency to decrease with increasing H2SO4 concentration in the aqueous phase for all REE-extractant complexes studied. It was observed that only in the case of REE-LIX 272 complex intermediate stripping percentages were achieved that could be used in a route of the separation of REE ions. The analysis of the equilibrium studies allowed to appreciate clearly that the extraction of praseodymium is the most favored in all cases, and less consecutive neodymium, cerium and lanthanum. Additionally, it was noted that from the point of view of the extractants, D2EHPA is which most favors the extraction reaction and in less consecutive degree for PC88A, LIX 272, and CYANEX 301. From an analysis of all the obtained data it is allowed to conclude that extractant LIX 272 is which better complies with the requirement for removing any REE ions preferably under certain conditions and, thus, can propound some possible separation route. Extraction kinetic studies indicated that in general praseodymium will react faster with all the extractants and also in general, lanthanum reacts more slowly. In the same way, it is noted that the extractant that react faster with the metal ions is D2EHPA and in less consecutive degree for PC88A, LIX 272, and CYANEX 301. Furthermore, stripping kinetic experiments indicated that REE-D2EHPA, and REE-PC88A complexes are the fastest in releasing REE ions. Likewise, REE-CYANEX 301 complex is that which release them more slowly. The separation route of metal ions in two stages proposed in this study using the LIX 272 extractant fulfill in some extent with the stated objective. In the first extraction step it was able to increase the purity of lanthanum in the aqueous phase up to 40%, approximately. A projection of this result for 8 contacts would obtain a refine constituted exclusively of lanthanum, reaching out to isolate about 70% of the original lanthanum. In the second stage of the separation route, that considers the stripping of REE-LIX 272 complexes, about 74% of the initial cerium was isolated with a purity exceeding 98%. A projection of 3 contacts for this stage would provide a final aqueous phase with a purity of 99.97% for cerium and an overall process yield of 54.8%. This equilibrium separation route leaves the separation problem relegated only to the couple praseodymium and neodymium. On the other hand, the difference in an order of magnitude of the stripping kinetic constants for Pr-LIX 272, and Nd-LIX 272 complexes would allow to project a separation of both ions at time
25
Chiesa, Sandra. "Hypomelanose de ito : a propos d'un cas avec revue de la litterature medicale : aspects cliniques et physiopathogeniques." Université Louis Pasteur (Strasbourg) (1971-2008), 1990. http://www.theses.fr/1990STR1M011.
Full text
26
Ahmed, Sadia. "Channel Analysis and Estimation and Compensation of Doppler Shift in Underwater Acoustic Communication and Mitigation of IFI, ISI in Ultra-wideband Radio." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5408.
Full textAbstract:
Water occupies three fourth of earth's surface. The remaining one fourth is land. Although human habitats reside on land, there is no denying of the vital connection between land and water. The future sustainability of human species on this planet depends on wise utilization of all available resources, including that provided by the vast water world. Therefore, it is imperative to explore, understand, and define this massive, varying, and in many areas, unexplored water domain.
The water domain exploration and data collection can be conducted using manned or unmanned vehicles, as allowed by the water environment. This dissertation addresses three of the key difficulties that occur during underwater acoustic communication among manned and/or unmanned vehicles and proposes feasible solutions to resolve those difficulties. The focus and the contributions of this research involve the following perspectives:
1) Representation of Underwater Acoustic Communication (UAC) Channels: Providing a comprehensive classification and representation of the underwater acoustic communication channel based on the channel environment.
2) Estimation and Compensation of Doppler Shift: Providing compensation algorithm to mitigate varying Doppler shift effect over subcarriers in UAC Orthogonal Frequency Division Multiplexing (OFDM) systems.
3) Mitigation of Inter-symbol Interference (ISI): Providing feasible solution to long delay spread causing ISI in Ultra-wideband channels.
27
Jagoš, Ľubomír. "Generování OFDM signálů pomocí generátoru libovolných průběhů LW410." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-316436.
Full textAbstract:
This thesis describing basic concepts and parts of OFDM modulator, showing their implementation in Matlaba. It's also focusing on how to use USRP with Matlab and creating functional OFDM modulator. Main efford is forwarded to practical impelementation of OFDM using available hardware.
28
Meinel, Gotthard, and Ulrich Schumacher. "Flächennutzungsmonitoring III." Rhombos-Verl, 2011. https://slub.qucosa.de/id/qucosa%3A4658.
Full textAbstract:
Das Buch informiert über neueste Methoden und Datengrundlagen eines Flächennutzungsmonitorings sowie kleinräumigen Statistik- und Prognosemethoden. Grundlage sind die Beiträge des 3. Dresdner Flächennutzungssymposiums. Zwei Trends bestimmen die rasante Entwicklung: das stetig verbesserte Datenangebot sowie die Abstimmung von Liegenschafts- und Geotopographie im AAA-Projekt.
Diese wird nun endlich die tatsächliche Flächennutzung harmonisieren und neue Perspektiven für ein genaueres Flächennutzungsmonitoring eröffnen. In der Analyse und Visualisierung ist der Trend zu Rasterkarten unübersehbar. Denn administrative Gebietseinheiten werden momentan immer größer und entziehen sich damit einem Monitoring. Sie müssen zwingend um kleinräumigere und zeitlich konstante Analyseeinheiten ergänzt werden; dazu eignen sich insbesondere quadratische geographische Gitterzellen.:Aktuelle Trends der Flächennutzungsentwicklung
Flächennutzungsentwicklung in Deutschland – Trendanalysen auf Basis
der aktuellen amtlichen Flächenstatistik
Gertrude Penn-Bressel............................................................................3
Flächenverbrauch und Landschaftszersiedelung – Wo steht Deutschland
im internationalen Vergleich?
Stefan Fina............................................................................................11
Aktuelle Ergebnisse des IÖR-Monitors zur Flächennutzung in Deutschland
Tobias Krüger........................................................................................23
Methoden des Flächennutzungsmonitorings
Fernerkundliche Erhebungen in Kombination mit Geo- und Statistikdaten –
Mehrwert durch Datenverknüpfung
Wieke Heldens, Hannes Taubenböck, Thomas Esch, Christian Geiß,
Michael Wurm, Michael Thiel...................................................................39
Kleinräumige quantitative Abschätzung des deutschen Gebäudebestandes –
Ausgangslage und Perspektive
Martin Behnisch, Gotthard Meinel..........................................................47
Siedlungsflächenmonitoring in Rasterkarten
Markus Dießelmann, Gotthard Meinel, Robert Hecht..............................61
Amtliche Flächenstatistik – ALK – IÖR-Monitor – Ergebnisse eines Vergleichs
Gotthard Meinel, Ekkehard Scheffler......................................................71
Visualisierungs- und Bewertungsmethoden
Visualisierung von Ergebnissen der Arealstatistik der Schweiz
mit Kriging- und Mischrasterkarten
Werner Meyer........................................................................................83
Monitoring- und Bewertungsmethoden von Problem- und Stadterneuerungs‑
gebieten – Realisierung im Stadtteilmonitor Dresden
Nguyen Xuan Thinh................................................................................93
Raumbeobachtung und Flächenmanagement in der Metropolregion Rhein-Neckar
Hans-Peter Hege.................................................................................107
Neue Analyse- und Visualisierungsmöglichkeiten im Monitor
der Siedlungs- und Freiraumentwicklung (IÖR-Monitor)
Jochen Förster.....................................................................................115
Amtliche Geodaten und -dienste als Grundlage eines Monitorings
Das ATKIS Basis-DLM im neuen Gewand – was hat sich geändert
Wolfram Kunze....................................................................................125
Das neue Geobasisprodukt 3D-Gebäudestrukturen
Stephan Heitmann...............................................................................135
Informationsdienst „GeoDaten Dresden“ – informatorisches Instrument
zum Flächensparen?
Marcus Dora.........................................................................................141
Indikatoren und Monitoring des Freiraums
Indikatoren und Monitoring der biologischen Vielfalt in Deutschland
Werner Ackermann, Rainer Dröschmeister, Ulrich Sukopp...................149
Landschaftszerschneidung und Waldfragmentierung –
Neue Indikatoren des IÖR-Monitors
Ulrich Walz, Tobias Krüger, Ulrich Schumacher.....................................163
Prognosen der Flächeninanspruchnahme
Das 30-Hektar-Ziel – Flächensparen auf Kosten sozialer und ökonomischer Belange?
Stefan Siedentop.................................................................................173
Modellgestützte Projektion der Flächeninanspruchnahme in den Kreisen
Deutschlands bis 2020
Martin Distelkamp, Philip Ulrich............................................................181
Gewerbeflächenprognosen – Methodische Zugänge und Forschungsbedarf
Karsten Rusche, Alexander Mayr.........................................................189
Kleinräumige Statistik – Probleme und Lösungen
Indikatorensysteme im Spannungsfeld zwischen europäischen Anforderungen
und regionalem Informationsbedarf
Hans-Dieter Kretschmann....................................................................199
„Äpfel mit Birnen vergleichen, aber nicht mit Zitronen“ – Überlegungen
zu einer Erweiterung der regionalstatistischen Analyseeinheiten in der
amtlichen Statistik
Markus Sigismund................................................................................205
Möglichkeiten und Grenzen der Regionalisierung statistischer Erhebungen
am Beispiel des Zensus 2011
Michael Bubik, Karsten Lamla...............................................................213
Das kleinräumige städtische Gliederungssystem AGK als
Basis intrakommunaler Informationssysteme
Rainer Schönheit..................................................................................219
Strategien der Geoinformationsnutzung
Geoinformations-Nutzung durch Geodateninfrastrukturen:
Das Beispiel GDI Metropolregion Hamburg
Sascha Tegtmeyer...............................................................................229
Planungsraumbezogene Informationsbereitstellung für Monitoring
und Analyse – Umsetzungsbaustein der Rahmenstrategie Soziale
Stadtentwicklung Berlin
Dietrich Bangert...................................................................................235
Kommunale Geodateninfrastrukturen und sozio-technischer Systemwandel:
Entwicklungspfade in Deutschland
Marc Wolfram.......................................................................................241
Autorenverzeichnis..............................................................................255
29
Dvořák, Petr. "ITIL trenažér." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2013. http://www.nusl.cz/ntk/nusl-236394.
Full textAbstract:
This master's thesis presents analysis, design and implementation of an information system for supporting studying and practicing of selected methods described by Information Technology Infrastructure Library (ITIL) with focus on service design and service operation. In the form of a web application the thesis presents an uncommon approach to e-learning system development by extending the standard lecture part by game elements and interactive scenarios. Developed system allows creators to define services and tasks, such as incidents and problems caused by their operation, and evaluate reactions of responsible users. The application can be used by IT administrators or Service Desk managers to train new IT engineers or Service Desk operators.
30
Karpin, George W. "Synthesis and Antimicrobial Activity of Half-Sandwich Ir(III), Rh(III), and Co(III) Complexes." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/79414.
Full textAbstract:
This dissertation describes the synthesis and antimicrobial use of a series of half-sandwich Ir(III), Rh(III), Co(III) amino acid and ethylenediamine complexes. This investigation focuses on the formulation (ηn-arene)M(L)X, (L = ethylenediamine or α-amino carboxylate), (M= Ir, Rh, Ru, Co). Arene, Ligand and metal center variations were designed to tailor antimicrobial activity specific for each organism studied (Staphylococcus aureus or Mycobacteria). Each of the D/L-amino acids formed a diasteromeric complex with chiral centers on both the metal center and amino acid ligand. The unique chirality of each center elicits different antimicrobial activity against the Mycobacteria studied. The metal center (M), arene ligand (ηn-arene), and amino acid (aa), were changed independently and studied for the antimicrobial activity. In a similar fashion, each of the complexes modified with ethylenediamine and diamine derivatives were studied for their antimicrobial activity against S.aureus. All complexes were synthesized,characterized by nuclear magnetic resonance (NMR), high-resolution mass spectroscopy (HRMS), single-crystal X-ray diffraction, and elemental analysis.
During the course of this work it was found that the amino acid complexes with all metal centers were specific for antimicrobial activity against all types of Mycobacteria, while the diamine derivatives were active against different strains of S.aureus. Acitvity was measured to be as low as 2 ug/mL respectively depending on the complex used. A structure activity relationship was developed to determine what combinations of ligand, metal and arene were necessary to achieve the highest antimicrobial activity. The optimal arene R-chain length for CpR was determined to be R=hexyl for all complexes studied. The most active amino acidcomplex was determined to be that of L-phenylglycine for Mycobacteria, the cis-1,2-diaminocyclohexane complex is the most active ligand against S.aureus. Each metal center had similar activity levels. Toxicological studies were performed to test their viablity to be used in mammalian systems. The complexes with the highest activity were studied against several mammailan cell lines and revealed that mammailan cells were undergoing normal cellular processes at up to 40 times the minimal inhibitory concentration (MIC). A study of the MOA or mechanism of action revealed the ability of the amino acid complexes to affect the peptidyl transferase region on the 23s ribosomal subunit of M.smegmatis. This was accomplished by isolating resistant strains of M.smegmatis towards the most effective complex (Cp*hexyl)Ir(L-phenylglycine)-Cl. Cross drug resistance of these mutants was shown with clarithromycin. The DNA of the 23s ribosomal subunit was sequenced revealing a deletion/insertion mutation within domain V (bases 2057-2058).Ph. D.
31
Zeng, Chao, Adrian Gonzalez-Alvarez, Emily Orenstein, Jim A. Field, Farhang Shadman, and Reyes Sierra-Alvarez. "Ecotoxicity assessment of ionic As(III), As(V), In(III) and Ga(III) species potentially released from novel III-V semiconductor materials." ACADEMIC PRESS INC ELSEVIER SCIENCE, 2017. http://hdl.handle.net/10150/623578.
Full textAbstract:
III-V materials such as indium arsenide (InAs) and gallium arsenide (GaAs) are increasingly used in electronic and photovoltaic devices. The extensive application of these materials may lead to release of III-V ionic species during semiconductor manufacturing or disposal of decommissioned devices into the environment. Although arsenic is recognized as an important contaminant due to its high toxicity, there is a lack of information about the toxic effects of indium and gallium ions. In this study, acute toxicity of As(III), As(V), In(III) and Ga(III) species was evaluated using two microbial assays testing for methanogenic activity and 02 uptake, as well as two bioassays targeting aquatic organisms, including the marine bacterium Aliivibrio fischeri (bioluminescence inhibition) and the crustacean Daphnia magna (mortality). The most noteworthy finding was that the toxicity is mostly impacted by the element tested. Secondarily, the toxicity of these species also depended on the bioassay target. In(III) and Ga(III) were not or only mildly toxic in the experiments. D. magna was the most sensitive organism for In(III) and Ga(III) with 50% lethal concentrations of 0.5 and 3.4 mM, respectively. On the other hand, As(III) and As(V) caused clear inhibitory effects, particularly in the methanogenic toxicity bioassay. The 50% inhibitory concentrations of both arsenic species towards methanogens were about 0.02 mM, which is lower than the regulated maximum allowable daily effluent discharge concentration (2.09 mg/L or 0.03 mM) for facilities manufacturing electronic components in the US. Overall, the results indicate that the ecotoxicity of In (III) and Ga(III) is much lower than that of the As species tested. This finding is important in filling the knowledge gap regarding the ecotoxicology of In and Ga.
32
Viljoen, Karen. "Ruthenium(III) aqua-chloro complex chemistry : the interconversion of the hexachlororuthenate(III) and aquapentachlororuthenate(III) species." Thesis, Stellenbosch : University of Stellenbosch, 2003. http://hdl.handle.net/10019.1/16458.
Full textAbstract:
Thesis (MSc)--University of Stellenbosch, 2003.ENGLISH ABSTRACT: Ruthenium, as one of the platinum group metals, was investigated to determine the aquation rate constant of [RuCl6]3- and the anation rate constant of [RuCl5(H2O)]2-. This two reactions represent the equilibrium reaction [RuCl6]3- + H2O ⇄ [RuCl5(H2O)]2- + Cl-. The reactions were followed, using stopped-flow injection and UV/Visible spectroscopy, at different temperatures. The aquation and anation rate constants were determined with good precision and thermodynamic values for the reactions were calculated. The pseudo first order aquation rate constant, k65, was determined by calculation from the regression line as k65 = 52.1 (±3.7) x10-3 s-1 at 25°C. The activation energy, Ea, is 90.1 (±1.2) kJ.mol-1 and the enthalpy and entropy of activation is 87.7 (±1.2) kJ.mol-1 and 24.7 (±4.3) J.K-1.mol-1, respectively. The aquation rate constant was found to be dependent on the hydrochloric acid concentration, decreasing with increasing hydrochloric acid concentration. From the regression line at 25°C the second order anation rate constant, k56, was calculated as 1.62 (±0.11) x10-3 M-1s-1. The activation energy is 88.0 (±1.4) kJ.mol-1, with the enthalpy and entropy of activation 85.6 (±1.4) kJ.mol-1 and –11.2 (±4.7) J.K-1.mol-1, respectively. The influence of the hydrochloric acid concentration of the solution on the anation rate constant was not investigated. The equilibrium constant for the reaction studied was calculated from the rate constants for the aquation and anation reactions. The equilibrium constant, K6, was calculated as 0.0311 M-1 at 25°C. The equilibrium constant, when compared to literature, was found to be dependent on the hydrochloric acid concentration. It was then used, in conjunction with data from the literature, to construct two distribution diagrams. Distribution diagrams for the Ru(III) aquachloro species show between 79.9% to 72.3% [RuCl6]3- present in 12M HCl. The two distribution diagrams were very similar and it is not possible to resolve the issue of a final distribution diagram for the aqua-chloro Ru(III) system without further investigation into the all the other rate constants of the Ru(III) aqua-chloro species. The rate constants and thermodynamic values for the Ru(III) reaction were compared to corresponding data (from literature) for Rh(III) and Ir(III) because several comparisons between these platinum group metals have been noted. It was found that for both the aquation and anation rate constants, the following trend was observed: Ru(III) > Rh(III) > Ir(III). These differences are in certain cases exploited in the refining of these platinum group metals. Crystals of diethylenetriamine hexachlororuthenate(III) was prepared and characterised by x-ray crystallography and CHN analysis. The average Cl-Ru bond length for the crystal was 2.371 Å. The crystal structure was compared to hexaaquaaluminium hexachlororuthenate(III) tetrahydrate and diethylenetriamine hexachlororhodate(III). The metal-chloride bond lengths of all the crystals were found to be similar (2.350 Å – 2.375 Å). The diethylenetriamine crystal structures compared well. The conclusion was that the crystals prepared were diethylenetriamine hexachlororuthenate(III).
AFRIKAANSE OPSOMMING: Ruthenium(III), een van die platinum groep metaal-ione, is in hierdie studie ondersoek om die akwasie tempo konstante van [RuCl6]3- en die anasie tempo konstante van [RuCl5(H2O)]2- te bepaal. Dié twee reaksies verteenwoordig die ewewigsreaksie [RuCl6]3- + H2O ⇄ [RuCl5(H2O)]2- + Cl-. Die verloop van die reaksies is met behulp van UV/Sigbare spektroskopie by verskillende temperature gevolg. Die akwasie en anasie tempo konstantes is bepaal met goeie presisie en die termodinamiese konstantes van die reaksies is bereken. Die pseudo-eerste orde akwasie tempo konstante, k65, is bepaal deur middel van regressie, as 52.1 (±3.7) x10-3 s-1 by 25°C. Die aktiverings energie, Ea, is bereken as 90.1 (±1.2) kJ.mol-1 en die entalpie en entropie van aktivering is onderskeidelik 87.7 (±1.2) kJ.mol-1 en 24.7 (±4.3) J.K-1.mol-1. Daar is gevind dat die akwasie reaksie konstante afhanklik was van die soutsuur konsentrasie: dit neem af soos die soutsuur konsentrasie toeneem. Met behulp van die regressie lyn is die anasie tempo konstante bepaal by 25°C as 1.62 (±0.11) x10-3 M-1s-1. Die aktiveringsenergie is bepaal as 88.0 (±1.4) kJ.mol-1 en die entalpie en entropie van aktivering, onderskeidelik as 85.6 (±1.4) kJ.mol-1 en –11.2 (±4.7) J.K-1.mol-1. Die invloed van die soutsuur konsentrasie op die anasie tempo konstante is nie bepaal nie. Die ewewigskonstante vir die reaksie wat ondersoek is, is bereken met die tempo konstantes vir die akwasie en anasie reaksies. Die ewewigskonstante, K6, is bereken as 0.0311 M-1 by 25°C. Toe die ewewigskonstante vergelyk is met die literatuur waardes, is gevind dat die ewewigskonstante afhanklik is van die soutsuur konsentrasie. Saam met die waardes wat in die literatuur gevind is, is die ewewigskonstante gebruik om twee distribusie diagramme te bereken. Die distribusie diagramme vir die Ru(III) spesies toon onderskeidelik 79.9% en 72.3% [RuCl6]3- in 12M HCl. Die twee distribusie diagramme is baie eenders en dit is nie moontlik om ‘n finale distribusie diagram op te trek totdat die uitstaande tempo konstantes tussen die akwachloro Ru(III) spesies bepaal word nie. Die tempo konstantes en termodinamiese waardes wat bepaal is vir die Ru(III) reaksie is vergelyk met gelyksoortige waardes in die literatuur van Rh(III) en Ir(III) omdat daar ooreenkomste tussen die platinum groep metale opgemerk is. Daar is bevind dat die akwasie én anasie reaksies die volgende patroon volg: Ru(III) > Rh(III) > Ir(III). Die verskille word in sekere gevalle benut in die raffinering van hierdie metale. Kristalle van dietileentriamien heksachlororuthenaat(III) is berei en gekarakteriseer met behulp van CHN analise en x-straal kristallografie. Die gemiddelde Cl-Ru bindingsafstand vir die kristal was 2.371 Å. Die kristalstruktuur is vergelyk met dié van heksaäkwaäluminium hexachlororuthenaat(III) tetrahidraat en diëtileentriamien heksachlororhodaat(III). Die chloried-metaal bindingsafstand vir die kristalle was soortgelyk (2.350 Å – 2.375 Å). Die diëtileentriamien kristalstrukture stem goed ooreen. Die gevolgtrekking was dat die kristalle wat voorberei is wel diëtileentriamien heksachlororuthenaat(III) was.
33
Molina, Calderón Lorena Paola. "Transferencia de lantano (III), cerio (III), praseodimio (III) y neodimio (III) a través de membranas líquidas emulsificadas utilizando cyanex 272 como agente transportador." Tesis, Universidad de Chile, 2012. http://www.repositorio.uchile.cl/handle/2250/111235.
Full textAbstract:
Memoria para optar al título de QuímicoEn esta Memoria de Titulo se estudió la transferencia del lantano (III), cerio (III), praseodimio (III) y neodimio (III), desde una fase acuosa de alimentación hacia una fase acuosa de retroextracción, por medio del transportador órgano fosforado CYANEX 272 contenido en una membrana liquida emulsificada. En primera instancia se estudió el comportamiento ácido base de cuatro extractantes (D2EHPA, PC-88A, CYANEX 272, CYANEX 301) permitiendo conocer sus pKa aparentes y su disponibilidad para reaccionar con los iones Tierras Raras (TR) a ciertos pH. A partir de este conocimiento y las reacciones de extracción propiamente tales fue posible proponer la utilización de una fase acuosa de alimentación tamponada con el ácido 3-cloropropiónico a pH 4. A través de los experimentos de extracción por solvente de cada uno de los iones TR con los cuatro extractantes en estudio, se determinó que el extractante más adecuado para el proceso fue el CYANEX 272, debido a su alta capacidad de extracción y mayor selectividad con los cuatro iones TR. Si bien en un principio todos los experimentos se realizaron con alimentaciones monometálicas, después fue preciso probar el grado de competencia que se generaría al realizar la extracción de los iones lantánidos desde una alimentación polimetálica. Los resultados fueron coincidentes con los experimentos de extracción individuales de los iones TR, en donde el lantano es el ión que menos se extrajo en comparación con los otro tres. Por otro lado, los experimentos de retroextracción revelaron que ion cerio presentaba el menor grado de transferencia hacia la fase acuosa interna. Todos estos conocimientos generados revelaron que la dupla Nd-Pr era difícil de separar con las condiciones ya establecidas. Por esta razón se agregó EDTA como agente quelante a una alimentación que contenía estos dos iones en iguales concentraciones (2mM), lográndose un coeficiente de selectividad máximo (SPr/Nd) de 1,7. Los experimentos de extracción por solvente (SX) generaron el conocimiento base para los experimentos de transporte de los cuatro iones lantánidos con CYANEX 272 a través de las Membranas Líquidas Emulsificadas (MLE). Previo al inicio de los experimentos de transferencia fue necesario lograr una doble emulsión de estabilidad adecuada en función de las concentraciones variables de sus componentes: transportador CYANEX 272, tensoactivo SPAN 80, Ln+3 (lantánidos) total y HCl en la fase acuosa de retroextracción. A partir del estudio de estabilidad, se observó que la concentración del tensoactivo SPAN 80 presentó el efecto más crítico, donde una cantidad insuficiente produjo pérdida de la fase acuosa interna, disminuyendo el rendimiento de extracción. Por otro lado, una cantidad excesiva de SPAN 80 provocó el hinchamiento de la emulsión primaria. Como consecuencia de esto la fase acuosa interna que contiene al ion de interés se diluye o pierde pureza. En términos generales, para conservar el volumen de 75 mL de emulsión primaria, formada por 25 mL de fase acuosa interna más 50 mL de fase orgánica, es necesario utilizar alrededor de 1,2% p/v de SPAN 80, cuando la concentración en la alimentación de cada uno de los ETR es 0,5 mM. Para concentraciones mayores se necesita aproximadamente entre 2-2,1% p/v de tensoactivo. Con los experimentos preliminares de transferencia de los iones TR en estudio, se pudo determinar que los elementos lantano, cerio, praseodimio y neodimio fueron extraídos eficientemente en el orden del 90% desde la alimentación, mientras que fueron transportados a través de la membrana hacia la fase acuosa interna en un rango entre 40-60%. Posteriormente, un estudio cinético de la extracción de cada uno de los ETR, permitió observar que durante los primeros 5 min los iones cerio, praseodimio y neodimio experimentaron un rápido decaimiento en su concentración en la fase acuosa externa, mientras que para el ion lantano se requirió al menos de 10 min. Finalmente, para lograr un enriquecimiento de cada uno de los iones metálicos mediante MLE desde una solución polimetálica, se realizaron dos diseños experimentales, uno de tipo screening y otro de optimización. Los resultados del primer diseño indicaron que el factor tiempo fue el único que presentó un efecto significativo sobre los porcentajes de extracción y transferencia de los ETR a través de la doble emulsión. En el segundo diseño los resultados indicaron que la presencia de EDTA en la fase acuosa externa tuvo un efecto negativo sobre el grado de transferencia de los iones TR hacia la fase orgánica.
In this work the transference of lanthanum (III), cerium (III), praseodymium (III) and neodymium (III) were studied, from a feed aqueous phase toward a backextraction aqueous phase by means of the organophosphorous CYANEX 272 carrier contained into an emulsified liquid membrane. In the first instance the acid-base behavior of the four extractants (D2EHPA, PC-88A, CYANEX 272 and CYANEX 301) were studied allowing to know their apparent pKa and through it the availability to react with the rare earth ions (RE) at certain pH. From this knowledge and the actual such extraction reactions it was possible to propose the use of a buffered feed aqueous phase with 3-cloropropionic acid at pH 4. Through the solvent extraction experiments for each one of the RE with the considered four extractants, it was determined that the most appropriated extractant for the process was CYANEX 272, owing to its high extraction capacity and better selectivity for the four RE ions. Although at first all experiments were performed with monometallic feeds, afterward it was necessary to test the degree of competition that would be generated to perform the extraction of lanthanide ions from a polymetallic feed solution. The results were consistent with the individual extraction experiments of the RE ions, wherein lanthanum is the lesser extracted ion compared with the other three ones. On the other hand, the backextraction experiments showed that the cerium ion had the lowest degree of transference toward the internal aqueous phase. All this generated knowledge revealed that the pair Nd-Pr was difficult to separate at the established conditions. For this reason, EDTA as a chelating agent was added to the feed solution that contained these two ions at identical concentrations (2 mM), achieving a maximum selectivity coefficient (SPr/Nd) of 1.7. The solvent extraction (SX) experiments generated the base knowledge for the transport experiments of the four lanthanide ions with CYANEX 272 through Emulsified Liquid Membranes (ELM). Before starting the transfer experiments it was necessary to achieve a satisfactory stability of the double emulsion as a function of the variation of the component concentrations: carrier CYANEX 272, surfactant SPAN 80, total Ln3+ (lanthanides) and HCl in the backextraction aqueous phase. From this stability study it was observed that the concentration of SPAN 80 surfactant showed the most significant effect, where an insufficient amount caused the loss of the internal aqueous phase, decreasing the efficiency of extraction. On the other side, an excessive amount of SPAN 80 caused a swelling degree of the primary emulsion. As a consequence the internal aqueous phase that contains the ion of interest is diluted or lost its purity. In general terms, for keeping the volume of 75 mL of the primary emulsion, consisting of 25 mL of internal aqueous solution plus 50 mL of the organic solution, it is necessary to use about 1.2% w/v of the SPAN 80, when the concentration of each the REE in the feeding is 0.5 mM. For higher concentrations of the total REE about 2 to 2.1% w/v of surfactant are needed, approximately. From the preliminary experiments related with the transfer study of the RE ions, it was determined that the lanthanum, cerium, praseodymium and neodymium elements are removed efficiently in the order of 90% from the feed solution, while they were transported across the membrane toward the internal aqueous phase in the range of 40-60%. Afterward, a kinetic study of the extraction of each one of the REE, allowed to note that during the first 5 min of the carrying out tests the cerium, praseodymium and neodymium ions experimented a fast decline in the concentration in the external aqueous phase, whereas for the ion lanthanum at least 10 min was required. Finally, to achieve an enrichment of each one of the metal ions from a polymetallic solution by means MLE, two experimental designs were conducted, a screening one and another one related with the optimization type. The results of the first design indicated that the time factor was the unique significant effect on the extraction and transfer rates of the REE through the double emulsion. In the second design the results indicated that the presence of EDTA in the external aqueous phase has a negative effect on the transfer degree of the RE ions towards the organic phase.
Fondecyt
34
Das, Sibasish. "Analysis and design of pilot-aided multicarrier systems over doubly selective channels with a local subcarrier processing constraint." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1199305333.
Full text
35
Neves, Josélia Gomes. "Cultura escrita em contextos indígenas /." Araraquara : [s.n.], 2009. http://hdl.handle.net/11449/101579.
Full textAbstract:
Orientador: Maria Rosa Rodrigues Martins de CamargoBanca: Maria Ivonete Barbosa Tamboril
Banca: Robson Antonio Rodrigues
Banca: Edson do Carmo Inforsato
Banca: Adir Casaro Nascimento
Resumo: O principal objetivo deste estudo foi investigar e documentar o processo de aquisição e apropriação da cultura escrita na T. I. Igarapé Lourdes junto às etnias Arara-Karo e Gavião-Ikolen e sua relação com a oralidade (FERREIRO; TEBEROSKY, 1999; FREIRE, 1987, CHARTIER, 1990; CERTEAU, 1998; ONG, 1998). Foi possível sistematizar a história de alfabetização e escolarização dessas sociedades indígenas, bem como compreender o modo de apropriação do objeto escrito. Esta pesquisa foi desenvolvida a partir da concepção de estudo do tipo etnográfico (ANDRÉ, 1995), de 2004 a 2009, na T. I. Igarapé Lourdes, no município de Ji-Paraná, estado de Rondônia. Envolveu oito aldeias e oito escolas públicas de educação escolar indígena, sendo duas pertencentes ao povo Arara-Karo e seis ao povo Gavião-Ikolen. Os colaboradores e colaboradoras Gavião-Ikolen foram quatro lideranças, uma do sexo feminino e três do sexo masculino e doze professores indígenas - todos do sexo masculino. Da etnia Arara-Karo participaram duas lideranças - todas do sexo masculino e sete docentes, sendo três professoras e quatro professores. Os docentes são contratados pela Secretaria de Estado da Educação - SEDUC, a maioria habilitados pelo Projeto Açaí - curso de magistério indígena e atuam com exclusividade nos anos iniciais do ensino fundamental. A coleta de dados ocorreu por meio dos seguintes instrumentos: observação participante nas aldeias e nas escolas, entrevistas a docentes e lideranças indígenas, bem como análise documental - cadernos de planejamento e relatório docentes, cadernos e atividades avulsas de alunos e alunas. A análise desenvolvida possibilitou compreender que os povos indígenas da T. I. Igarapé Lourdes, os Arara- Karo e Gavião-Ikolen desenvolvem cotidianamente ações de leitura e escrita. Buscam ler textos como os de gêneros jornalísticos - jornais... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Il obiettivo principale in questo studio era quello di indagare e documentare il processo di acquisizione e la proprietà di alfabetizzazione in T. I. Bayou Lourdes vicino al etnica Karo Macaw Hawk e Ikolen e il suo rapporto con l'oralità (FERREIRO; TEBEROSKY, 1999; FREIRE, 1987, CHARTIER, 1990; CERTEAU, 1998; ONG, 1998). E 'stato possibile sistematizzare la storia di alfabetizzazione e di istruzione delle popolazioni indigene, così come capire le modalità di appropriazione della scrittura dell'oggetto. Questa ricerca è stata sviluppata dalla concezione dello studio etnografico (ANDRÉ, 1995), dal 2004 al 2009, in T. I. Igarapé Lourdes, la città di Ji- Paraná, stato Rondonia. Si trattava di otto villaggi e otto scuole pubbliche in materia di istruzione indigene, e due persone appartenenti alla macaw Karo e sei persone di Hawk-Ikolen. Gli sviluppatori e contributori Hawk-Ikolen erano quattro leader, una femmina e tre maschi e dodici insegnanti indigeni - tutti maschi. Etnica Macaw Karo ha preso due leader - tutti i maschi e sette insegnanti, tre insegnanti e quattro insegnanti. Gli insegnanti sono assunti dal Dipartimento di Stato della Pubblica Istruzione - SEDUC, la maggior parte autorizzata dalla Açaí Project - Corso di insegnamento aborigena e ad agire esclusivamente nei primi anni di scuola elementare. La raccolta dei dati è avvenuta attraverso i seguenti strumenti: osservazione partecipante nei villaggi e nelle scuole, colloqui con gli insegnanti e leader indigeni e analisi documentaria - termini di pianificazione e reporting degli insegnanti, libri e attività su misura a ragazzi e ragazze. L'analisi ci ha permesso di comprendere le popolazioni indigene del T. I. Igarapé Lourdes, i Karo e Macaw Hawk-Ikolen sviluppare le attività quotidiane di lettura e scrittura... (Riassunto completo, acesso elettronico clicca qui sotto)
Doutor
36
POSTIGO, PONS BRIGITTE. "Contribution a l'etude de la maladie de ito (ou incontinentia pigmenti achromians) : a propos d'une observation ; revue de la litterature." Toulouse 3, 1989. http://www.theses.fr/1989TOU31223.
Full text
37
Farzaneh, Kayvan. "A Comprehensive Survey to Identify System Concepts & ICT Requirements of IRAN Intelligent Transportation System (IRAN ITS)." Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-2621.
Full textAbstract:
This thesis report describes the survey carried out in order to study the ITS practices in Sweden and Europe and indentifying their successes and failures as well as technical specifications. Furthermore, a requirement analysis work has been taken into account to identify the needs and requirements of ITS development in Iran from both business and technical aspects. This thesis aims to conclude and come up with a plan about the development strategy and system architecture of Iran ITS.
38
González, Flores María de la Paz. "ITIL (Information Technology Infrastructure Library) Descripción, Funcionamiento y Aplicaciones." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2015. http://hdl.handle.net/20.500.11799/99997.
Full text
39
Morcel, Karine. "Génétique du syndrome de Mayer-Rokitansky-Küster-Hauser : étude d'un gène candidat, le gène ITIH5." Rennes 1, 2009. http://www.theses.fr/2009REN1B127.
Full textAbstract:
Le syndrome de Mayer-Rokitansky-Küster-Hauser (MRKH) est une aplasie utéro-vaginale congénitale pouvant être associée à d'autres malformations. Des cas familiaux ont été décrits. Une délétion chromosomique différente a été découverte chez 4 patientes indépendantes, au sein de loci associés au syndrome de DiGeorge (DGS) (22q11, 10p14, 8p23 et 4q34-ter). En 10p14, un gène, ITIH5, est concerné par la délétion. Il appartient à la famille des gènes ITI ayant un rôle dans la dynamique de la matrice extracellulaire. Chez la souris, l'expression d'Itih5 est forte et s'intensifie au cours du développement dans le tractus génital interne femelle. De plus, les tractus génitaux semblent synthétiser une isoforme protéique d'Itih5 spécifique. Ainsi les loci connus du DGS pourraient être aussi impliqués dans l'étiologie du syndrome MRKH, pouvant conduire à un syndrome dit "de gènes contigus". Enfin, l'haploinsuffisance du gène ITIH5 pourrait rendre compte du syndrome MRKHThe Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome is featured by a congenital utero-vaginal aplasia associated with other malformations. Familial cases were described. A different deletion was found in 4 independent patients within the four chromosomal loci affedted in DiGeorge syndrome (DGS) (22q11, 10p14, 8p23 and 4q34-ter). In 10p14-15, one gene, ITIH5, was affected by the deletion. It is a member of the ITI gene family, playing a role in extracellular matrix dynamics. In the mouse, Itih5 expresssion is strong and increases during embryonic development in the female genital tract. Moreover, the genital tracts seem to synthesize a specific isoform of the Itih5 protein. In conclusion, the loci involved in DGS deletion syndrome might as well be involved in the MRKH syndrome which would then be part of a wider and heterogeneous deletion syndrome. Furthermore our results show that ITIH5 haploinsufficiency could account for the MRKH syndrome
40
Wang, Jingwen, and Sereshki Hami Khosravi. "How to implement ITIL successfully?" Thesis, Jönköping University, JIBS, Business Informatics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-12968.
Full textAbstract:
The purpose of this thesis is to reveal how Information Technology Infrastructure Library (ITIL) should be implemented in an organization in an efficient and effective way to achieve the goal of reducing wastage, cutting costs and increasing customers’ satisfaction. There are many books dealing with the ITIL. But these publications do not prescribe how to adopt, adapt or implement the guidelines as part of a service management strategy; it would seem useful to explore implementation strategies which are employed by organizations when they are using ITIL “best practices”.
This paper seeks to take a study of “How to implement ITIL successfully in organizations”, which could be subdivided into questions of “What steps are necessary to implement ITIL” and “what factors are critical within implementation process”. Although previous researches have made some recommendations generally, this paper investigates the question on that base through comparing consultants’, organizations’ opinion and previous researches.
This study begins with an overview of ITSM, ITIL, and critical success factors and steps of ITIL implementation. Information about the critical success factors and steps of ITIL implementation were acquired through interviews, emails and questionnaires from responsible staff in some major representative consultancy and organizations.
The outcomes of our research are fourteen significant steps to implement ITIL and some success factors during implementation, which are vital to have a prosperous ITIL implementation. This research makes a guideline for organizations to understand and carry out the ITIL implementation efficiently.
41
Затовський, Ігор Вікторович. "Синтез та дослідження подвійних фосфатів титану (III) та ванадію (III)." Diss. of Candidate of Chemical Sciences, КУ ім. Тараса Шевченка, 2000.
Find full text
42
Carver, Aaron Dalnamath. "Selective Oxidations by Iron(III) Porphyrins and Iron(III) Corroles." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1395.
Full textAbstract:
The selective oxidation of organic compounds represents a leading technology for chemical industries. They are used in chemical synthesis in the pharmaceutical and petrochemicals industries, and possible the decontamination of harmful substances. However, oxidations reaction are among the most challenging processes to control. Many stoichiometric oxidants with heavy metals are expensive, or toxic maybe both, and therefore unfeasible to be utilized. The ideal processes for catalytic oxidation would use molecular oxygen or hydrogen peroxide as the primary oxygen source, with transition metal catalysts to mimic the predominant oxidation catalysts in Nature, the cytochrome P450 enzymes. This study focuses on the synthesis of porphyrin and corrole macrocyclic ligands and the corresponding iron(III) complexes which are fully characterized by UV-vis, GC/MS, and NMR spectroscopies. In this work, the potential of catalytic oxidation reactions towards organic sulfides by these metal complexes were studied. The iron(III) porphyrin and iron(III) corrole catalysts have shown excellent activity and selectivity for sulfoxidation reactions. Various reaction conditions and environmental effects were investigated including solvent, axial ligands, water, amounts of oxygen source, and substrate scope. The optimal conditions were determined for iron(III) porphyrin/ corrole-catalyzed sulfoxidations with PhI(OAc)2 as the mild oxygen source. Competitive catalytic oxidation of substituted thioanisoles versus thioanisole by iron(III) corrole with PhI(OAc)2 were studied. The spectral studies of iron(III) corrole with PhI(OAc)2 in the presence of organic sulfide showed that a well-known diiron(IV)-μ-oxo biscorrole was formed with a second-order rate constant of k2= (3.5 ± 0.3)×103 M-1·s-1. A catalytic cycle was proposed on the basis of the mechanistic study, suggesting a highly reactive iron(V)-oxo corrole as the active oxidizing intermediate.
43
Sorin, Antoire. "Séparation actinides (III) lanthanides (III) par nanofiltration assistée par complexation /." [Gif-sur-Yvette] : [CEA Saclay, Direction des systèmes d'information], 2006. http://catalogue.bnf.fr/ark:/12148/cb402306421.
Full text
44
Less, Adam David. "Cultural Biases in the Weschler Memory Scale iii (WMS-iii)." UNF Digital Commons, 2012. http://digitalcommons.unf.edu/etd/591.
Full textAbstract:
The Wechsler Memory Scale –iii is the newest version of a six-decade old neuropsychological inventory. Since its conception, the Wechsler Memory Scale has been highly utilized by practitioners to accurately assess various memory functions in adult subjects. Revisions made within this inventory include the Faces I subtest, a facial recognition scale, which was added in order to strengthen the instrument’s accuracy at measuring episodic memory. Facial recognition, both cross-race and within-race, has been researched extensively and consistent biases have been found between race of test taker and cross-racial identification. Theories of exposure/contextual interaction (environment) and biological foundations have been the subject of study in the past in order to determine from where these racial identification deficits stem. The current study focuses on revealing bias in the Faces I subtest, regarding to an unequal distribution of racially representative faces in the testing materials. Eighty-eight college students were recruited to view forty-eight pictured faces from the Faces I subtest and determine the racial category to which the pictured face belonged. The subjects’ categorical responses were the basis for calculating a percent agreement score for racial category of each face. It was determined, using the results of subjects’ responses, that the Faces I subtest contained an unequal distribution of racially representative faces in both the Target and Interference testing material. This confirmed the presence of an inherent bias within the subscale. The implications of memory accuracy for the WMS-iii are discussed as it relates to different fields of study, but none more directly than the criminal justice system. Eyewitness testimony is a pivotal evidentiary tool in the criminal justice system, and ramifications of cross-racial identification deficits and biases in the tools to accurately assess memory are increasingly bringing this once heavily relied upon tool into question.
45
Sorin, Antoine. "Séparation actinides(III)-lanthanides(III) par nanofiltration assistée par complexation." Lyon 1, 2006. http://www.theses.fr/2006LYO10001.
Full textAbstract:
Ces travaux de thèse ont pour objectif la séparation actinides (III) / lanthanides (III) par un procédé de nanofiltration assistée par complexation. Ainsi, un pilote de filtration membranaire tangentielle a été conçu et implanté dans une boîte à gants d'un laboratoire de l'installation ATALANTE du CEA-Marcoule. Une caractérisation physico-chimique de la membrane Desal GH (OSMONICS), retenue pour réaliser la séparation An(III)/Ln(III), a été effectuée pour déterminer notamment le potentiel zêta de la couche active et sa tenue aux rayonnements ionisants. En outre, une étude paramétrique a également été réalisée pour optimiser la sélectivité de complexation, et les conditions opératoires de rétention des complexes. Enfin, la séparation de traces d'Am(III) contenues dans un mélange de Ln(III), simulant la charge réelle issue d'un cycle de retraitement, a été évaluée avec plusieurs complexants de type acide polyaminocarboxylique en fonction de pH de la solution et de la quantité de ligand
46
Diaz, Canales Eva María. "Síntesis de Nuevos Materiales Microporosos Mediante Técnicas High-Throughput." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/59230.
Full textAbstract:
[EN] Zeolites are microporous crystalline materials showing channels and cavities of molecular dimensions in its interior. The main advantage of these materials is their high thermal and chemical stability as well as the possibility to change the topology and dimensions of the channels and cavities.
The main goal of this thesis is to obtain new microporous materials (zeolites) and to widen the composition range of some existing materials, using high-throughput techniques of synthesis and characterization.
Four families of structure directing agents (SDAs) are synthesized to obtain these microporous materials and each family is formed by quaternary tetraalkylammonium cations. The size and the volume of the members of each SDA family are increased to carry out a study on how it affects this increase on the type of zeolite that crystallizes
Taking into account the importance of each of the various parameters that influence on the hydrothermal synthesis of zeolites and trying to cover all the possible range of composition, a factorial design of experiments for each obtained and characterized SDA is performed. The materials of interest obtained in these experiments are subjected to an exhaustive characterization, in order to determine its structure and properties.
Known materials such as zeolites ITQ-3, ITQ-43 and ITQ-44 have been obtained with the SDAs used. But the most important thing of this thesis has been obtaining two new materials, which we refer to as ITQ-57 and ITQ-60. The structure of the zeolite ITQ-60 is completely determined and we can conclude that it is an intergrown material, formed by two layers and presenting a two-dimensional system of 10 x 12 MR channels. On the other hand, the structure of the zeolite ITQ-57 is in its final stages of definition, but we are able to determine is that it presents a large orthorhombic unit cell.
We must also mention the obtaining of an optimized synthesis method of the chiral zeolite SU-32. This zeolite has been synthesized as a racemic mixture with a chiral SDA. Using theoretical calculations it has been found that every one of the enantiomers of the SDA is able to lead to the formation of each one of the enantiomers of chiral zeolite. The last step is to synthesize each enantiomer of the SDA separately, allowing us to obtain the two chiral zeolites.[ES] Las zeolitas son materiales cristalinos microporosos que presentan canales y cavidades de dimensiones moleculares en su interior. La principal ventaja de estos materiales es su elevada estabilidad térmica y química, así como la posibilidad de poder variar la topología y dimensiones de los canales y cavidades. El principal objetivo de esta tesis doctoral es la obtención de nuevos materiales microporosos (zeolitas) y ampliar el rango de composición de alguno ya existente, empleando técnicas de síntesis y caracterización de alta capacidad. Para la obtención de estos materiales microporosos se sintetizan cuatro familias de agentes directores de estructura (ADEs), formadas por cationes tetraalquilamonio cuaternarios. En cada familia de ADEs se aumentan el tamaño y el volumen del agente para poder realizar un estudio sobre cómo afecta este aumento sobre el tipo de zeolita que cristaliza. Obtenidos y caracterizados los agentes directores de estructura, se lleva a cabo un diseño factorial de experimentos para cada uno de ellos teniendo en cuenta cada una de las variables que influyen sobre la síntesis hidrotermal de zeolitas e intentando cubrir el mayor rango posible de composición. Los materiales de interés obtenidos en estos experimentos se someten a una caracterización exhaustiva, para poder determinar su estructura y propiedades. Con los ADEs con los que se ha trabajado se ha obtenido materiales conocidos entre los que destacan las zeolitas ITQ-3, ITQ-43 e ITQ-44. Pero lo más importante de la realización de esta tesis ha sido la obtención de dos nuevos materiales, a los que se les ha denominado ITQ-57 e ITQ-60. La estructura de la zeolita ITQ-60 está completamente determinada y podemos concluir que es un material intercrecido, formado por dos capas y que presenta un sistema bidimensional de canales formados por anillos de 10 y 12 miembros. Por otro lado, la estructura de la zeolita ITQ-57 se encuentra en sus últimas etapas de determinación, pero ha podido determinarse que presenta una celda unidad ortorrómbica de grandes dimensiones. También es de destacar la obtención de un método optimizado de síntesis de la zeolita quiral SU-32. Esta zeolita se ha sintetizado en forma de mezcla racémica y empleando un ADE quiral. Mediante cálculos teóricos se ha podido comprobar que cada uno de los enantiómeros del ADE es capaz de dirigir hacia la formación de cada uno de los enantiómeros de la zeolita quiral. El último paso consiste en sintetizar por separado los enantiómeros del ADE, lo que nos permitirá obtener las dos zeolitas quirales.
[CAT] Les zeolites son materials cristal·lins microporosos que presenten canals i cavitats de dimensiones moleculars al seu interior. El gran avantatge de estos materials és la seua estabilitat térmica i química, així com la possibilitat de poder variar la topología i dimensiones dels canals i cavitats. El principal objectiu de esta tesi doctoral es l'obtenció de nous materials microporosos (zeolites) i ampliar el rang de composició d'algú ja existent, fent ús de tècniques de síntesi i caracterització d'alta capacitat. Per a l'obtenció d'estos materials microporosos se sintetitzen cuatre famílies d'agents directors d'estructura (ADEs), formades per cationes tetraalquilamoni cuaternaris. En cada familia d'ADEs s'augmenta la grandària i el volum de l'agent per a poder realizar un estudi sobre com afecta esta augment sobre el tipus de zeolita que cristal·litza. Obtinguts i caracteritzats els agents directors d'estructura, es du a terme un disseny factorial d'experiments per a cadascun d'ells tenint en compte cadascuna de les variables que influïxen sobre la síntesi hidrotermal de zeolites i intentant cobrir el major rang possible de composició. El materials d'interés obtinguts en estos experiments es sotmeten a una caracteritzación exhaustiva, per a poder determinar la seua estructura i propietats. Amb els ADEs amb els quals s'ha treballat s'han obtingut materials coneguts entre els quals destaquen les zeolites ITQ-3, ITQ-43 i ITQ-44. Però el més important de la realitzación d'esta tesi ha sigut l'obtenció de dos nous materials, al quals se'ls ha denominat ITQ-57 i ITQ-60. L'estructura de la zeolita ITQ-60 està completament determinada i podem concloure que és un material intercrescut, format per dos capes i que presenta un sistema bidimensional de canals format per anells de 10 i 12 membres. D'altra banda, l'estructura de la zeolita ITQ-57 es trova en les seues últimes etapes de determinació, però ha pogut determinar-se que presenta una cel·la unitat ortoròmbica de grans dimensions. També cal destacar l'obtenció d'un método optimitzat de síntesi de la zeolita quiral SU-32. Esta zeolita s'ha sintetitzat en forma de mescla racèmica i emprant un ADE quiral. Per mitjà de càlculs teòrics s'ha pogut comprobar que cadascun dels enantiómers de la zeolita quiral. L'últim pas consisteix a sintetitzar per separat els enantiómers de l'ADE, la qual cosa ens permtetrà obtindre les dos zeolites quirals.
Diaz Canales, EM. (2015). Síntesis de Nuevos Materiales Microporosos Mediante Técnicas High-Throughput [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/59230
TESIS
47
Castro, Marcos Pereira. "A política agrícola no estado contemporâneo : obrigações jurídicas atinentes ao desenvolvimento rural sustentável /." Franca : [s.n.], 2008. http://hdl.handle.net/11449/89864.
Full textAbstract:
Orientador: Elisabete ManigliaBanca: Lucas Abreu Barroso
Banca: Jete Jane Fiorati
Resumo: A presente pesquisa procurou analisar as orientações constitucionais atinentes a uma política agrícola que favorecesse a concretização dos fins do Estado de Direito Contemporâneo. Para tanto, o estudo teve como objetivos centrais discutir qual o paradigma de desenvolvimento sustentável adotado pelo sistema jurídico brasileiro, avaliar se a forma de desenvolvimento apregoada no ordenamento é suficiente para satisfazer os interesses coletivos e averiguar qual a efetividade dos dispositivos normativos relativos à atividade agrícola sustentável. O trabalho também buscou observar a possibilidade de o Direito participar, de maneira prospectiva, da regulação e construção de uma atividade agrícola capaz de superar os problemas socioambientais decorrentes da modernização conservadora do campo, a qual acentuou os riscos relativos à perda ou diminuição do potencial produtivo dos recursos naturais localizados no meio rural. A fim de realizar um estudo mais completo sobre esse tema, também foram ponderados os valores norteadores da atividade agrícola, as normas que condicionam a realização dessa atividade e as perspectivas de atuação do Estado, tanto na função de controle, quanto na obrigação de agir na fomentação do desenvolvimento rural e na prevenção de danos ambientais. Como resultado deste trabalho, constatou-se a existência de fundamentos jurídicos para a defesa de um paradigma de desenvolvimento sustentável tridimensional, uma vez que a própria Constituição Federal consagra a integração e harmonização da proteção ambiental com o crescimento econômico e o bem-estar social. Verificou-se, ainda, a existência de instrumentos estatais aptos a exigir que o produtor, quando possível, exerça suas atividades em conformidade com as obrigações prescritas, bem como a previsão e regulamentação de políticas governamentais destinadas à sustentabilidade do empreendimento agrícola
Astratto: Questa ricerca ha cercato di analizzare gli orientamenti costituzionali che riguardano ad una politica agraria che favoriva la concretizzazione delle fine di l' Stato di Diritto Contemporaneo. Per tanto, l' studio ha che obiettivi centrali discutere ciò che il paradigma di sviluppo sostenibile adottato dal brasiliano sistema giuridico, valutare se la forma di sviluppo proclamata in l' ordine è sufficiente a soddisfare gli interessi collettivi e d' indagare ciò che l' efficacia dei dispositivi normativi relativi a l' attività agricola sostenibile. Il lavoro ha anche cercato osservare la possibilità il diritto di partecipare, in modo prospettivo, del regolamento e della costruzione d' un'attività agricola capace di superare i problemi socioambientais legati all'ammodernamento conservarici del campo, che ha accentuato i rischi relativi alla perdita o la diminuzione del potenziale produttivo delle risorse naturali situate nel mezzo agricolo. Per realizzare uno studio più completo su quest'argomento, così sono stati riflessi i valori norteadores di l' attività agricola, le norme che condizionano la realizzazione di quest'attività e le prospettive di prestazione di l' Stato, in tale modo nella funzione di controllo, quanto in l' obbligo d' agire nella fomentação dello sviluppo agricolo e nella prevenzione di danni ambientali. Come risultato del lavoro, s' è constatata l' esistenza di basi giuridiche per la difesa d' un paradigma di sviluppo sostenibile tridimensionnel, visto che la Costituzione Federale stessa dedica l' integrazione e l' armonizzazione della protezione ambientale con la crescita economica ed il benessere sociale. Egli s' è verificato, ancora, l' esistenza d' strumenti d' stato atti ad esigere che il produttore, quando possibile, esercita le loro attività conformemente agli obblighi prescritti, come pure la previsione e la regolamentazione di politiche governative destinate allo sviluppo
Mestre
48
Keceli, Ezgi. "Ruthenium(iii) Acetylacetonate." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/3/12607230/index.pdf.
Full textAbstract:
Ruthenium(III) acetylacetonate was employed for the first time as homogeneous catalyst in the hydrolysis of sodium borohydride. Ruthenium(III) acetylacetonate was not reduced by sodium borohydride under the experimental conditions and remains unchanged after the catalysis, as shown by FT-IR and UV-Vis spectroscopic characterization. Poisoning experiments with mercury, carbon disulfide or trimethylphosphite provide compelling evidence that ruthenium(III) acetylacetonate is indeed a homogenous catalyst in the hydrolysis of sodium borohydride.
Kinetics of the ruthenium(III) acetylacetonate catalyzed hydrolysis of sodium borohydride was studied depending on the catalyst concentration, substrate concentration and temperature. The hydrogen generation was found to be first order with respect to both the substrate concentration and catalyst concentration. The activation parameters of this reaction were also determined from the evaluation of the kinetic data: activation energyEa = 25.6 &
#61617
&
#61472
1.3 kJ.mol-1, the enthalpy of activation
&
#8710
H# = 24.6 ±
1.2 kJ.mol-1 and the entropy of activation &
#8710
S# = -170 ±
5 J&
#61655
mol-1&
#61655
K-1. Ruthenium(III) acetylacetonate provides the lowest activation energy ever found for the hydrolysis of sodium borohydride. Ruthenium(III) acetylacetonate was found to be highly active catalyst providing 1183 total turnovers in the hydrolysis of sodium borohydride over 180 min before they are deactivated. The recorded turnover frequency (TOF) is 6.55 min-1.
49
YASUDA, Takami, Shigeki YOKOI, 孝美 安田, and 茂樹 横井. "コンピュータグラフィックス（III・完）." 社団法人電子情報通信学会, 1993. http://hdl.handle.net/2237/14953.
Full text
50
Oakley, Thomas J. "S.cerevisiae Topoisomerase III." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393998.
Full text