Дисертації з теми "Ferrell"
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Ptok, Andrzej. "Mechanizmy stabilizujące fazę nadprzewodzącą typu Fulde-Ferrell-Lakin-Ovchinnikov." Doctoral thesis, Katowice : Uniwersytet Śląski, 2012. http://hdl.handle.net/20.500.12128/5337.
Повний текст джерелаMora, Christophe. "Gaz de bosons et de fermions condensés : phases de Fulde-Ferrell-Larkin-Ovchinnikov et quasicondensats." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2004. http://tel.archives-ouvertes.fr/tel-00005472.
Повний текст джерелаFFLO. Celles-ci peuvent apparaître dans les supraconducteurs
ou les gaz d'atomes froids fermioniques en présence d'une différence
homogène de potentiels chimiques entre les deux états de spin.
Nous regardons la compétition
entre les différentes phases FFLO près de la transition.
A 2D, nous utilisons une approche de type Ginzburg-Landau
pour prédire une cascade de transitions entre des phases inhomogènes
de plus en plus complexes.
A 3D ou la transition FFLO est du premier ordre,
nous présentons une méthode numérique
de résolution des équations quasiclassiques d'Eilenberger
basée sur un développement de Fourier.
Nous déterminons ainsi les phases inhomogènes de plus basse énergie.
Dans la seconde partie, nous étendons la théorie perturbative
de Bogoliubov aux quasicondensats dans une représentation densité-phase.
Nous obtenons des prédictions pour différentes observables.
Burns, William James. "We Must Grow Our Own Artists: Mary-Russell Ferrell Colton, Northern Arizona's Early Art Educator." Digital Archive @ GSU, 2010. http://digitalarchive.gsu.edu/eps_diss/54.
Повний текст джерелаWhitley, William George. "Charge density waves and superconductivity in U6Fe." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/22031.
Повний текст джерелаBarkman, Mats. "Investigation of Order Parameter Structures of the Fulde-Ferrell-Larkin-Ovchinnikov State in Superconductors Using the Finite Element Method." Thesis, KTH, Fysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-233563.
Повний текст джерелаBerridge, Andrew McConnell. "Itinerant metamagnetism and magnetic inhomogeneity : a magnetic analogue of the superconducting Fulde-Ferrell-Larkin-Ovchinnikov phase in Sr₃Ru₂O₇." Thesis, University of St Andrews, 2009. http://hdl.handle.net/10023/821.
Повний текст джерелаKehrle, Jan-Michael [Verfasser], and Siegfried R. [Akademischer Betreuer] Horn. "The Fulde-Ferrell Larkin-Ovchinnikov Like State in Bilayers and Trilayers of Superconducting and Ferromagnetic Thin Films / Jan-Michael Kehrle. Betreuer: Siegfried Horn." Augsburg : Universität Augsburg, 2012. http://d-nb.info/107770108X/34.
Повний текст джерелаNewbold, Haylie Goldene. "Infra-red vision in ferrets (Mustela furo)." The University of Waikato, 2007. http://hdl.handle.net/10289/2357.
Повний текст джерелаPease, García Yrigoyen Franklin. "Onorio Ferrero (1908-1989)." Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/122105.
Повний текст джерелаSiu, Selina. "Computer Aided Ferret Design." Thesis, University of Waterloo, 2003. http://hdl.handle.net/10012/1184.
Повний текст джерелаHamayon, Stéphane, and Axel de Ferran. "Les marchés des métaux non ferreux." Paris 10, 1989. http://www.theses.fr/1989PA100026.
Повний текст джерелаObjective of first part is to set up a classification of non-ferrous markets through multivariale statistical analysis. It has induced construction and selection of complex indicators to caracterize the markets. Results of statistical analysis allowed us to make relevant classifications. Second part is mainly devoted to analyse evolution of prices of non-ferrous metals and to study the different kinds of modelizations for commodity markets. After a general presentation of the models, we focalized on tin market to analyse the reasons of its problems and to be able to study the efficiency of Cnuced commodity markets stabilization policies
Chazot, Matthieu. "Verres chalcogénures dopés aux ions ferreux." Master's thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/26467.
Повний текст джерелаDans le domaine de la photonique, le bande spectrale s’étalant de 3 à 5 μm fait office de la prochaine frontière à franchir dans le domaine des lasers. Les champs d’applications sont nombreux; on peut citer entre autres la spectroscopie moléculaire, la chirurgie, les capteurs atmosphériques ou encore les systèmes de contre-mesure dans le domaine militaire. Ce projet porte sur le développement de verres chalcogénures de haute pureté, dopés aux ions de métaux de transition et en particulier les ions ferreux, afin de les utiliser pour remplacer les cristaux de ZnSe comme cavité résonante et répondre ainsi à la forte demande de sources lasers compactes opérant entre 3 et 5 microns. La forte non-linéarité de ces verres associée à leur transparence dans l’infrarouge en font de bons candidats pour des applications passives et actives dans l’infrarouge. Dans ce travail on met l’emphase sur la synthèse et la caractérisation des verres chalcogénures dopés aux ions ferreux. Le choix de la matrice vitreuse et de la quantité des ions Fe2+ sont les paramètres fondamentaux à contrôler pour l’émission entre 3 et 5 μm. Les matrices Ge28Sb12Se60 et Ge33As12Se55 ont été sélectionnées au cours de ce projet pour leur bonne capacité à accepter de grandes concentrations d’ions ferreux sans cristalliser. Une analyse détaillée de leurs spectres d’absorption en fonction de la concentration en ions Fe2+ a été effectuée dans le but de déterminer la concentration optimale en dopant à utiliser pour avoir une fluorescence entre 3 et 5 microns. Par ailleurs des compositions vitreuses chalcohalogénures ont également été explorées lors de cette étude afin d’améliorer les paramètres optiques des verres. Des mesures de fluorescences des échantillons ont finalement été effectuées et sont présentées dans ce travail.
Fisher, John T. "Ferret CFTR processing and function." Diss., University of Iowa, 2012. https://ir.uiowa.edu/etd/3453.
Повний текст джерелаGeffroy, Pierre-Marie. "Mise en forme d'alliages ferreux et non ferreux par un procédé de fonderie assisté par un champ magnétique." Bordeaux 1, 2005. http://www.theses.fr/2005BOR12979.
Повний текст джерелаVásquez, Rossi María Inés. "Desde dentro. Entrevista con Carlos Ferrero Costa." IUS ET VERITAS, 2016. http://repositorio.pucp.edu.pe/index/handle/123456789/123182.
Повний текст джерелаGuzmán, Zorrilla Emanuel Jesús. "Modelamiento de corrientes superficiales inducidas por viento y marea en la bahía Ferrol - Chimbote." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2006. https://hdl.handle.net/20.500.12672/2535.
Повний текст джерелаTesis
Carvalho, Sara Monaliza Costa. "Teste de tetrazólio em sementes de jucá (Libidibia ferrea (Mart. ex Tul.) L.P. Queiroz var. ferrea)." Universidade Federal Rural do Semi-Árido, 2016. http://bdtd.ufersa.edu.br:80/tede/handle/tede/574.
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Currently, the most widely used test for assessing the seed physiological quality is the germination. However, this presents some obstacles, the largest one, is a long time to obtain results, especially for forest species. The tetrazolium test provides fast results, and this has proved to be a promising alternative for the determination of viability of this kind of seed. However, the success of the test depends on the development of an appropriate methodology for each species. Thus, this research aimed to evaluate procedures for the pre-wetting, preparation and staining jucá seeds to tetrazolium test. The experiments have been divided into two steps. As in the first trial were tested pre-wetting conditions and seed preparation, the second was dedicated to the dyeing stage, in which three concentrations of tetrazolium solution were tested (0.05, 0.075 and 0.1%) and three periods (1, 3 and 6 hours) at the temperatures of 35 to 40 ° C. The seeds were sorted into viable or non-viable according to the colorations obtained. At the same time, the germination test was conducted to compare the results with the feasibility estimates by the tetrazolium test. It was found that the mentioned test is efficient to evaluate the feasibility of jucá seeds and to implement it is recommended the scarification of the seeds with sandpaper followed by soaked paper towel for 42 hours at 25 ° C and removal of the seed coat, with subsequent immersion of the seeds into the tetrazolium solution at 0.05% for 3 hours at 35 or 40 ° C
Atualmente o teste mais utilizado para a avaliação da qualidade fisiológica de sementes é o de germinação. No entanto, este apresenta alguns entraves, sendo o maior deles o longo tempo para obtenção de resultados, principalmente para as espécies florestais. O teste de tetrazólio proporciona resultados rápidos e por isso tem se mostrado uma alternativa promissora na determinação da viabilidade de sementes dessas espécies. Todavia, o sucesso do teste depende do desenvolvimento de metodologia adequada para cada espécie. Assim, essa pesquisa teve como objetivo avaliar procedimentos destinados ao pré-umedecimento, preparo e coloração de sementes de jucá para o teste de tetrazólio. Os experimentos foram divididos em duas etapas. Enquanto no primeiro ensaio foram testadas condições de pré-umedecimento e preparo das sementes, o segundo foi dedicado à fase de coloração, onde foram testadas: três concentrações da solução de tetrazólio (0,05; 0,075 e 0,1%) e três períodos (1, 3 e 6 horas), nas temperaturas de 35 e 40 °C. As sementes foram classificadas em viáveis ou inviáveis de acordo com as colorações obtidas. Paralelamente, foi conduzido o teste de germinação para comparação dos resultados com as estimativas de viabilidade do teste de tetrazólio. Constatou-se que o teste de tetrazólio é eficiente para avaliar a viabilidade de sementes de jucá e para a sua execução recomenda-se a escarificação das sementes com lixa seguida de embebição em papel toalha por 42 horas a 25 °C e retirada do tegumento, com posterior imersão das sementes em solução de tetrazólio a 0,05% por 3 horas, a 35 ou 40 °C
2016-12-05
Joos, Olivier. "Compréhension des mécanismes d'endommagement couplés des cylindres de travail pour le laminage à chaud des alliages ferreux et non ferreux." Paris, ENMP, 2009. http://www.theses.fr/2009ENMP1655.
Повний текст джерелаThe interruption of a hot strip mill in order to replace a work roll is very expensive. This replacement is mainly motivated by strip surface quality degradation. The strip surface quality is the mirror of the roll one. Because of numerous coupled solicitations during service (oxidation, abrasion/adhesion, thermal fatigue), the roll surface is continuously damaged. The relative amplitude of each solicitation depend of the roll position in the mill. The productivity improvement is also linked to the roll life increase, in others words is linked to the enhancement of roll resistance to oxidation, abrasion/adhesion and/or thermal cracking. The aim of this study consists in correlating microstructure of 4 roll grades with resistances against solicitations. At the laboratory level, solicitations are decoupled in order to better study the impact of microstructural parameters on damage mechanisms. After highlighting grade microstructural differences through numerous parameters (such as the solidification structure; the type, chemical composition, morphology and distribution of both primary and secondary carbides ; the structure and chemical composition of the matrix,…), we show firstly how these parameters influence grade oxidation mechanisms. Secondly we analyse the impact of these parameters on wear mechanisms against coupled solicitations: abrasion and oxidation on a one side, thermal fatigue ant oxidation on the other side. By weighing these parameters, it will be possible to optimize the microstructure
Sebastian, Torres Raimon. "Ferrer Saiol, traductor de Pal•ladi." Doctoral thesis, Universitat de Barcelona, 2014. http://hdl.handle.net/10803/283132.
Повний текст джерелаThe aim of this thesis is to analyse and to understand Ferrer Saiol's skills as a translator of Palladius' Opus agriculturae. Only two manuscripts of this translation written around 1385 have reached us: one of them, in Catalan, (from Biblioteca Municipal Serrano Morales in Valencia, 6437) and the other one, in Spanish, (from Biblioteca Nacional de España in Madrid, 10211). Both texts help us to discern which Ferrer Saiol’s comprehension of the Latin work was and which sources were followed to make his translation. Our thesis is divided into three parts. The first one deals with Opus agriculturae’s dissemination during the Middle Ages and the First Renaissance. It also includes the presence to the Palladian work in the Kingdom of Aragon as well as Saiol’s translation. The second section analyses both preserved testimonies and their filiation by examining the Latin sources used by Ferrer and it studies their lexicographical, morphological and syntactic treasure, which is the core of our thesis. The third part consists of an edition of the Opus agriculturae first book, that includes the canonical Latin text and both Ibero-Romance versions.
Lang, Mia E. "Intestinal permeability in the irradiated ferret." Thesis, University of Ottawa (Canada), 1991. http://hdl.handle.net/10393/7772.
Повний текст джерелаMrsic-Flogel, Thomas D. "Development of the ferret auditory cortex." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249548.
Повний текст джерелаHarper, M. S. "Anatomical organisation of ferret auditory complex." Thesis, University of Aberdeen, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.592545.
Повний текст джерелаSmith, Lorraine M. "Magnesium transport in ferret red cells." Thesis, University of Edinburgh, 1994. http://hdl.handle.net/1842/20802.
Повний текст джерелаHine, Jemma Elizabeth. "Free-field binaural unmasking in ferrets and humans." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358701.
Повний текст джерелаShavila, Joseph. "The toxicological significance of fatty liver in ferrets." Thesis, University of Surrey, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280375.
Повний текст джерелаWang, Qing Yuan. "Etude de la fatigue gigacyclique des alliages ferreux." Châtenay-Malabry, Ecole centrale de Paris, 1998. http://www.theses.fr/1998ECAP0693.
Повний текст джерелаAuphan, Étienne. "Quel avenir pour les réseaux ferrés d'Europe occidentale ? /." Paris : Ed. du Centre national de la recherche scientifique, 1991. http://catalogue.bnf.fr/ark:/12148/cb35478558t.
Повний текст джерелаFerrer, Ferrer Maura [Verfasser], and Alexander [Gutachter] Dityatev. "Mental retardation-related protease neurotrypsin in spinogenesis, synaptic plasticity and learning / Maura Ferrer Ferrer ; Gutachter: Alexander Dityatev." Magdeburg : Universitätsbibliothek Otto-von-Guericke-Universität, 2019. http://d-nb.info/1220036064/34.
Повний текст джерелаMatos, Anselmo Junio Pedroso. "Controle de qualidade físico-químico de uma formulação de pomada orabase de Libidibia ferrea ex. Caesalpinia ferrea L." Universidade Federal do Amazonas, 2016. http://tede.ufam.edu.br/handle/tede/5663.
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Herbal medicines are obtained from medicinal plants, and represent a therapeutic option for the treatment of various diseases. The plant species Libidibia ferrea (L. ferrea) ex. Caesalpinia ferrea L is popularly used and has healing, antifungal and antimicrobial effects scientifically proven. Previous studies have determined the minimum inhibitory concentration of L. ferrea extract that can inhibit the growth of microorganisms present in the oral cavity, which allowed establishing the final concentration of dry matter in the formulation of an ointment containing as active ingredient L. ferrea. The overall objective of this study was the physical-chemical quality control of a orabase ointment formulation of Libidibia ferrea. This is an experimental, controlled, "in vitro" study. Plant samples were derived from the National Institute for Amazonian Research (INPA) and transported to the Faculty of Pharmaceutical Sciences (FCF) of the Federal University of Amazonas (UFAM) for the processing and production of dry extract. For physico-chemical evaluation, centrifuge tests, pH, mass, relative density, microbiological evaluation and organoleptic character of contaminants tests were performed. The physical conditions tested storage were: room temperature (± 25.9 ° C), room temperature, protected from light (± 28.8 ° C) and air conditioning (± 23.7 ° C), the experimental periods were 0, 30 and 60 days. The results of the pH test were analyzed by ANOVA and t-test (p <0.05). The analysis of other results was made using descriptive statistics. The results showed that in the centrifugation test, phase separation was observed at all times (0, 30 and 60 days) and in all storage environments. On the pH test, only the formulation stored at room temperature got a lower pH value, mean (1.95) after 60 days of manipulation. The density test showed the average value of 0.809 g / cm³ when at time 0 and after 30 days of formulation air conditioning values (0,746g / cm³), room temperature (0.702 g / cm³) and room temperature, protected from light, dark (1.022 g / cm³). The evaluation of contaminants showed that there was no bacterial growth in any environment and experimental time, but macroscopically was observed the growth of cotton wool colonies compatible with fungal colonies in stored formulation air conditioning in time of 30 days, and all storage locations time 60 days. On the organoleptic assessment, the ointment showed changes after 60 days of formulation. Based on the results, the formulation tested maintained a better stability of the tested characteristics when stored at room temperature in the dark (dark), however, after 60 days of storage the formulation presented chemical and physical instability and growth of contaminants.
Os fitoterápicos são medicamentos obtidos de plantas medicinais e, representam uma opção terapêutica para o tratamento de diversas enfermidades. A espécie vegetal Libidibia ferrea (L. ferrea) ex. Caesalpinia ferrea L é utilizada popularmente e apresenta atividades cicatrizante, antifúngica e antimicrobiana cientificamente comprovadas. Estudos anteriores determinaram a concentração inibitória mínima do extrato L. ferrea capaz de inibir o crescimento de microrganismos presentes na cavidade bucal o que possibilitou estabelecer a concentração final do extrato seco na formulação de uma pomada contendo a L. ferrea como princípio ativo. O objetivo geral do presente estudo foi realizar o controle de qualidade físico-químico de uma formulação de pomada orabase de Libidibia ferrea. Trata-se de um estudo experimental, “in vitro”, controlado. As amostras vegetais foram oriundas do Instituto Nacional de Pesquisa da Amazônia (INPA) e transportadas para a Faculdade de Ciências Farmacêuticas (FCF) da Universidade Federal do Amazonas (UFAM), para o processamento e produção do extrato seco. Para avaliação físico-química foram realizados os testes de centrifugação, pH, densidade relativa de massa, avaliação microbiológica de contaminantes e caracteres organolépticos. As condições físicas de armazenamento testadas foram: temperatura ambiente (±25,9°C), temperatura ambiente ao abrigo da luz (±28,8°C) e ar-condicionado (± 23,7°C), nos períodos experimentais, 0, 30 e 60 dias. Os resultados do teste de pH foram analisados pelo teste ANOVA e teste-t (p < 0,05). A análise dos demais resultados foram analisados através da estatística descritiva. Os resultados mostraram que no teste de centrifugação, foi observada a separação de fases em todos os tempos (0, 30 e 60 dias) e ambientes de armazenamento; no teste do pH, apenas a formulação armazenada em temperatura ambiente obteve um valor de pH mais baixo, média de (1,95) após 60 dias de manipulação; a densidade apresentou o valor médio de 0,809 g/cm³ quando no tempo 0 e após 30 dias de formulação os valores arcondicionado (0,746g/cm³), temperatura ambiente (0,702 g/cm³) e temperatura ambiente ao abrigo da luz, escuro (1,022 g/cm³); na avaliação de contaminantes não houve crescimento de bactérias em nenhum ambiente ou tempo experimental, porém foi observado macroscopicamente o crescimento de colônias algodonosas compatível com colônias de fungos na formulação armazenada em ar-condicionado no tempo de 30 dias, e em todos os locais de armazenamento no tempo de 60 dias; na avaliação organoléptica, a pomada apresentou alterações após 60 dias de formulação. Com base nos resultados, a formulação testada manteve melhor estabilidade quanto às características testadas quando armazenada em temperatura ambiente ao abrigo da luz (escuro), no entanto, após 60 dias de armazenamento a formulação apresentou instabilidade químico-fisica e crescimento de contaminantes.
Partosoedarso, Elita Roosi. "An electrophysiological study of vagal reflex pathways activated by upper gastrointestinal stimuli." Title page, contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09php274.pdf.
Повний текст джерелаSangrà, Boladeres Antonio. "El pintor Agustí Ferrer Pino (1884-1960)." Doctoral thesis, Universitat de Barcelona, 2014. http://hdl.handle.net/10803/285168.
Повний текст джерелаBizley, Jennifer K. "Organisation and function of ferret auditory cortex." Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418558.
Повний текст джерелаAguinaga, Jean-François. "Francisco Ferrer et l'école moderne de Barcelone." Paris 10, 1993. http://www.theses.fr/1993PA100103.
Повний текст джерелаThis research presents three lines: geopolitical and historical frame of the Barcelona modern's school; the life and production of Ferrer since 1907 to 1909; the public honours (streets, places in France) due to Ferrer's memory and their casual relationship with educationnal creations after Ferrer's death inspired by the Barcelona modern school
Hammond-Kenny, Amy J. "Multisensory processing in the ferret auditory cortex." Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:4e9a731e-4001-4e88-8ffb-7c0c7317050a.
Повний текст джерелаGoetz, Damien. "Exploitation sélective de gisements massifs de métaux non ferreux." Phd thesis, École Nationale Supérieure des Mines de Paris, 2000. http://pastel.archives-ouvertes.fr/pastel-00578193.
Повний текст джерелаCes deux objectifs conduisent à s'intéresser à la teneur de coupure. Ce paramètre essentiel définit la limite entre minerai et stérile. Il est utilisé au stade de l'étude du projet minier et sert alors à la définition des contours du gisement industriel.
L'ide développée dans ce document repose sur le fait que lorsque ce paramètre est appliqué à un volume de petite dimension, il peut être ajusté à court terme et permet une sélection plus efficace (en ce sens qu'à un niveau équivalent de récupération de métal, il permet d'écarter un tonnage plus important de matière). Cette idée conduit à proposer un modèle, dérivé des modèles par étapes limitantes, de détermination de la teneur de coupure optimale pour ce type d'exploitation, qualifiées ici de sélectives. Les difficultés de la mise en œuvre, qu'il s'agisse de difficultés liées à l'estimation géologique ou à la planification à court terme de l'exploitation, sont également abordées.
Di, Curzio Domenico. "Preclinical treatments for hydrocephalus in juvenile ferrets and rats." BioMed Central, 2013. http://hdl.handle.net/1993/31647.
Повний текст джерелаOctober 2016
Ait, Maamar Rachid. "Systeme expert temps réel pour l'hydrométallurgie des non ferreux." Paris 13, 1996. http://www.theses.fr/1996PA132023.
Повний текст джерелаMalarte, Guillaume. "Voie d'oxydation aérobie du fer ferreux chez Acidithiobacillus ferrooxidans." Aix-Marseille 1, 2005. http://www.theses.fr/2005AIX11055.
Повний текст джерелаAcidithiobacillus ferrooxidans is a chimiolithotrophic organism which used ferrous iron, elemental sulphur and reduced sulphur compounds like energy source. This bacterium is used in the industriel processus of biolixiviation for precous metals extraction. Studie of the iron oxidation pathway has enabled to characterize differents metalloproteins involved in the electron transfer : cytochrome c4 CYC41, cytochrome c Cyc2, rsticyanin and cytochrome c oxidase. We have performed the heterologue synthesis of CYC41 in the neutrophilic bacterium E. Coli to study le folding mechanism of this cytochrome. 3D structure resolution of CYC41 has enabled to determine mechanisms involved in the stabilisation of this cytochrome at acidic pH. We have shown that CYC41. Transfer electrons from rusticyanin to cytochrome c oxidase with an “electron wire” mechanism. We have shown that all metalloproteins involved in the ferrous iron oxidation pathway are organised in a super-complex structur. Our results are agree with the genetic organisation metalloproteins coding genes in the rus operon
Petit, Grostabussiat Sophie. "Conséquences mécaniques des transformations structurales dans les alliages ferreux." Lyon, INSA, 2000. http://theses.insa-lyon.fr/publication/2000ISAL0117/these.pdf.
Повний текст джерелаThis work deals with the assessment of residual stresses, in the Heat Affected Zone (HAZ), after a welding process in a 16MND5 steel (used in the French nuclear power plants). Two experimental devices are used to perform some analyses related to the material and the structural scales. For the material scale, we are interested in the evaluation of the mechanical consequences of phase transformations during cooling : transformation induced plasticity (TRIP), classical elastoplastic behaviour when the material is composed of two phases and the recovery phenomenon during the transformation. The interaction between classical plasticity and TRIP is also considered. It is shown that, for the same applied load, the TRIP is more significant in a double transformation (bainite + martensite) compared to a single transformation. It is also shown that, if the austenitic phase is hardened before its transformation into bainite, it seems that a very significant part of this hardening is transmitted to the bainite during the transformation. Moreover, the results show the importance of the interaction between classical plasticity and TRIP. For the classical elastoplastic behaviour, an empirical function is proposed in order to enable the evaluation of the stress in a mixture (austenite + ferritic phase) during transformation. For the structural scale analyses, tests were carried out considering a disc heated axisymetrically in its medium in order to have a HAZ. Numerical simulations using the finite element code, Code_Aster (which takes into account the interactions between the thermal, the mechanical and the metallurgical phenomena), developed by Electricité de France, were also performed. . The numerical results were compared to the experimental measurements (temperatures, displacements, residual stresses. . . ). From this comparison, the significant role played by the TRIP in the assessment of the residual stresses, is clearly shown
Silva, Volnir de Oliveira. "Estudos cinéticos da catálise da reação de fenton por 3,5-di-terc-butil-catecol." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/46/46132/tde-05022013-140557/.
Повний текст джерелаThe Fenton reaction is the name given to the oxidation of iron(II) to iron(III) by hydrogen peroxide, a reaction that produces highly oxidizing species like the hydroxyl radical. In this work, a spectrophotometric methodology is developed to accompany the formation of iron(III) during the initial moments of the Fenton reaction. This methodology was applied to four sets of reactions: (A) the simple Fenton system, containing only iron(II) and H2O2; (B) system A containing isopropanol, a simple substrate that undergoes principally oxidation to acetone; (C) system A containing the catalyst 3,5-di-tert-butyl-catechol (H2DTBCat); (D) system C plus isopropanol, corresponding to the complete catalytic system. For each set of reactions, the concentrations of iron(II) and H2O2 were varied. A kinetic model, based on explicit chemical reactions and their respective rate constants, was developed to simulate the the rate of formation of iron(III) for these four sets of reactions above. Using reactions described in the literature, the model produced simulations that satisfactorily reproduced the experimental data of sets A and B. In the case of sets C and D, however, it was necessary to propose an additional step involving the formation of iron(IV) or ferril, stabilized by complexation with H2DTBCat. Nonetheless, even with the inclusion of this species, the model failed to capture the complexity of the system at high concentrations of peroxide and iron. This failure was attributed to the rapid competitive degradation of H2DTBCat under these conditions, with the subsequent participation of the degradation products in the reaction as either co-catalysts or inhibitors.
Akerman, Colin J. "The development of functional connectivity in the mammalian geniculocortical pathway." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365701.
Повний текст джерелаWilliams, Adrian Lloyd. "Growth dynamics in the developing lateral geniculate nucleus." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313613.
Повний текст джерелаBaltzinger, Christiane. "Contribution à l'étude du mécanisme de l'attaque des cristaux en relation avec leur structure cas particulier de l'hématite /." Metz : Université Metz, 2008. ftp://ftp.scd.univ-metz.fr/pub/Theses/1974/Baltzingzer.Christiane.SMZ7407.pdf.
Повний текст джерелаWagner, Francis. "Contribution à l'étude des figures d'attaque sur les faces {01.2} de l'hématite par microscopie interférentielles et stéréoscopie au microscope électronique à balayage." Metz : Université de Metz, 2008. ftp://ftp.scd.univ-metz.fr/pub/Theses/1973/Wagner.Francis.SMZ7309.pdf.
Повний текст джерелаBessières, Jean Baro R. "Application de la méthode de P. Hartman à l'étude théorique et expérimentale de la forme d'équilibre des cristaux d'hématite [alpha]-Fe203." Metz : Université de Metz, 2008. ftp://ftp.scd.univ-metz.fr/pub/Theses/1972/Bessieres.Jean.SMZ7201.pdf.
Повний текст джерелаFischer, Ricardo Guimaräes. "The ferret in periodontal research clinical features, histology, microbiology and immunosuppression (Cyclosporin-A) /." Malmö : Dept. of Periodontology, Center for Oral Health Sciences, Lund University, 1993. http://catalog.hathitrust.org/api/volumes/oclc/28161627.html.
Повний текст джерелаGuzmán, Zorrilla Emanuel Jesús. "Modelamiento de la dispersión de contaminantes pasivos en la bahía Ferrol – Chimbote." Master's thesis, Universidad Nacional Mayor de San Marcos, 2014. https://hdl.handle.net/20.500.12672/3955.
Повний текст джерелаTesis
Costa, Leidyana Moraes da. "Desenvolvimento de produto seco por aspersão obtido a partir das cascas do caule de libidibia ferrea martius var. ferrea (fabaceae)." Universidade Federal do Amazonas, 2012. http://tede.ufam.edu.br/handle/tede/2590.
Повний текст джерелаCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Libidibia ferrea popularly known as jucá or pau-ferro is widely used in popular medicine for treatment of diabetes. The tannins are majority chemical constituents. Pharmacological studies, with the stem bark, showed main activities: antimicrobial, hypotensive, vasodilator and hypoglycemiant. This species are inserted in National Formulary Herbal Medicine. The goal of this work is the technological development and characterization of spray dried products from aqueous solution of the stem bark of L. ferrea. The vegetable material of L. ferrea was collected at different times and places from Manaus-AM, being characterized in order to establish parameters for quality control of this species. The dried products were produced using a 23 factorial design, where the independent variable was the type of adjuvant (colloidal silicon dioxide, microcrystalline cellulose and arabic gum) and the dependents variables were biological and technological characteristics of the products obtained. The dried products were evaluated as yielding, residual moisture, rheological properties, morphology, particle size, porosity and behavior in controlled environment with a relative humidity of 65%. In addition, it was evaluated the ability of in vitro inhibition of angiotensin converting enzyme (ACE) and α-glucosidase of the products obtained. Additionally, it was developed and validated an analytical method in liquid chromatography (HPLC) to quantify polyphenols in L. ferrea raw material. The results of raw material characterization demonstrate that were within the limits recommended by the Brazilian Pharmacopoeia. However, there were statistically significant quantitative differences among the samples studied suggesting that climatic conditions change the physico-chemistries characteristics of this species and therefore may influence the quality, efficacy and safety of the products. The HPLC method was validate and it was efficient for the quantification of gallic acid. Considering the dried products the work showed that the adjuvants studied did not contribute to increase the efficiency of dry operation when compared to the dry extract without adjuvant or improve the rheological characteristics. Evaluation of in vitro activity demonstrates that all products from L. ferrea inhibited significantly the enzyme α-glucosidase, however they were no efficient against ACE
A espécie vegetal Libidibia ferrea conhecida popularmente como jucá ou pau-ferro é largamente utilizada pela medicina popular da Amazônia para o tratamento do diabetes. Dentre os seus principais constituintes químicos destacam-se os taninos. Estudos farmacológicos realizados com as cascas do caule demonstraram atividades antimicrobiana, hipotensora, vasodilatadora e hipoglicemiante. A referida espécie está inserida no Formulário Nacional de Fitoterápicos. O presente trabalho refere-se ao desenvolvimento e caracterização tecnológica de produtos secos por aspersão a partir de solução extrativa aquosa das cascas do caule de L. ferrea. O material vegetal de L. ferrea foi coletado em diferentes épocas e lugares de Manaus, sendo caracterizado a fim de auxiliar no estabelecimento de parâmetros para o controle de qualidade dessa espécie vegetal. Os produtos secos foram produzidos através de um delineamento fatorial do tipo 23, tendo como variável independente o tipo de adjuvante de secagem (dióxido de silício coloidal, celulose microcristalina e goma arábica) e como variáveis dependentes as características tecnológicas e biológicas dos produtos obtidos. Dentre os parâmetros tecnológicos avaliados nos pós destacam-se o rendimento operacional, umidade residual, características reológicas, morfologia e granulometria, porosidade e comportamento frente à ambiente com umidade relativa controlada de 65%. Além disso, foi avaliada a capacidade de inibição in vitro da enzima conversora de angiotensina (ECA) e da α-glicosidase pelos produtos obtidos. Adicionalmente, foi desenvolvido e validado método analítico em cromatógrafo a líquido de alta eficiência (CLAE) para a quantificação polifenóis na matéria-prima vegetal de L. ferrea. Os resultados obtidos permitiram observar que os parâmetros estudados estão dentro dos limites preconizados pela Farmacopéia Brasileira. No entanto, todos os demais parâmetros avaliadas evidenciaram diferenças quantitativas estatisticamente significantes entre as amostras estudadas sugerindo que as condições edafoclimáticas alteram as características físico-químicas desta espécie e, portanto, podem influenciar na qualidade, eficácia e segurança de um produto final proposto. O método desenvolvido e validado em CLAE mostrou-se eficiente para a quantificação de ácido gálico, contemplando todos os critérios preconizados. Dentre os adjuvantes utilizados, a análise demonstrou que os adjuvantes adicionados à solução extrativa não contribuíram para um rendimento superior, assim como não proporcionaram melhores características reológicas. Na avaliação da atividade inibitória da α-glicosidase, no modelo experimental in vitro, todos os produtos oriundos da L. ferrea inibiram, significativamente, a enzima α-glicosidase. Em contrapartida, não foi constatada atividade inibitória para a ECA
Cunha, Arcelina Pacheco. "Caracterização e modificação química da Galactomanana de Caesalpinia Ferrea Mart Ex Tul.Var Ferrea: estudo do potencial antiviral, hipoglicemiante e cicatrizante." reponame:Repositório Institucional da UFC, 2015. http://www.repositorio.ufc.br/handle/riufc/21445.
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This study aims to develop polymeric compositions that can be applied to produce antiviral, hypoglycemic and as an aid in the healing of skin lesions. Therefore, the galactomannan from Caesalpinia ferrea seeds were purified, and subsequently modified by a chemical sulfation reaction. Then, purified sulphated galactomannan (JSGp and JSGs) were characterized by the following techniques: Infrared Transform Infrared spectroscopy (FTIR); Thermal Analysis (TG and DSC); Dispersive Energy X Ray (EDX); Scanning Electron Microscopy (SEM); Surface tension; Atomic Force Microscopy (AFM); Zeta potential; Gel Permeation Chromatography (GPC) and studies in rheology, among others. The toxicity of the galactomannans was evaluated for possible pharmacological applications. The following toxicity tests have been applied: assessment of toxicity through bioassays against nauplios Artemia sp; bioassays in vivo using Swiss mice; assessment of toxicity compared to the human neutrophils, as measured by lactate dehydrogenase (LDH) activity. According to the analyzes performed in this study, the purified galactomannan presented a hypoglycemic effect and a promising adjuvant in the healing of skin lesions. The galactomannan modified by sulfating presented antiviral properties against Herpes (HSV1) and polio (PV1) viruses.
O presente trabalho teve como objetivo desenvolver composições poliméricas que possam ser aplicadas como: antiviral, hipoglicemiante e como coadjuvante na cicatrização de lesões dérmicas. Para isso foi realizado uma purificação e modificação de galactomanana de Caesalpinia ferrea Mart ex Tul.Var Ferrea para avaliar o potencial de bioatividade desse polímero purificado e modificado por sulfatação. Após o procedimento de purificação e modificação química, a galactomanana de jucá foi caracterizada por Espectroscopia na Região do Infravermelho (FTIR), Análise Térmica (TGA e DSC), Energia Dispersiva de Raio-X (EDX) e Microscopia Eletrônica de Varredura (MEV), Tensão Superficial, Microscopia de Força Atômica (AFM), Potencial Zeta, Cromatografia de Permeação em Gel (GPC), estudos em reologia, avaliação da toxicidade das galactomananas (nativa, purificada e sulfatada) através dos bioensaios contra náuplios Artemia sp; bioensaios in vivo, utilizando camundongos da raça swiss e avaliação da toxicidade frente aos neutrófilos humanos, mensurada através da atividade da enzima lactato desidrogenase (LDH). Pelas análises realizadas nesse trabalho, o polissacarídeo, do tipo galactomanana, purificado e modificado por sulfatação, apresentou respostas bioativas, como antiviral, contra vírus da Herpes (HSV1) e poliomielite (PV1), hipoglicemiante e promissor coadjuvante na cicatrização de lesões dérmicas.
Lenzi, Maria Isabel Ribeiro. "Para aprendermos a história sem nos fatigar: a tradição do antiquariado e a historiografia de Gilberto Ferrez." reponame:Repositório Institucional da UFF, 2013. https://appdesenv.uff.br/riuff/handle/1/282.
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A tese tem como objeto de estudo a historiografia de Gilberto Ferrez e como fonte principal os documentos de seu arquivo pessoal existente no Arquivo Nacional, além de suas obras publicadas e pareceres para o SPHAN. O trabalho se insere no campo dos estudos da história da escrita da história e caracteriza como a obra de Gilberto Ferrez exemplifica o antiquariado enquanto forma de construção do conhecimento histórico. Discute também de que maneira esse modelo se mantém atual, contrariando a tendência a vê-lo apenas enquanto uma expressão da Época Moderna. Para definição do antiquariado, nos valemos de conceitos desenvolvidos por Arnaldo Momigliano. Considerando que Gilberto Ferrez também foi um colecionador notório, a pesquisa evidencia de que modo a prática de colecionar se constituiu como a base de sua formação de pesquisador em história, definindo o documento de época, sobretudo imagens, como objeto de estudo principal da História. Ao lado disso, a partir de Michel de Certeau, discute-se o lugar social da construção de sua historiografia, demarcando sua participação no IHGB e no Conselho Consultivo do SPHAN e sua rede de colaboração, descrevendo um ambiente de sociabilidade intelectual marcada por laços pessoais. Em seguida, a tese discute suas práticas de pesquisa, explorando os trabalhos publicados, os pareceres produzidos para o SPHAN e a correspondência mantida com seus pares. É apresentada ainda uma interpretação de sua leitura da história do Brasil como memória da civilização europeia, associada a estrangeiros que viveram no Brasil.
This dissertation discusses Gilberto Ferrez’s historiography. It uses as its main source the documentation from his personal archives preserved at the Arquivo Nacional, and cite as well the works the published and the technical judgements he issued as counselor at SPHAN. This text belongs to the field of studies dealing with the history of historical writing, and considers the manner in which the work of Gilberto Ferrez exemplifies antiquarianism taken as a form of constructio9n of historical knowledge. This dissertation also seeks to discuss how that model remains current, differing from those who tend to consider it only as an expression of the Modern Age. In order to define antiquarianism, we made use of concepts developed by Arnaldo Momigliano. Given the fact that Gilberto Ferrez also was a well-known collector, our research attests how the practice of collecting turned out to provide the foundations for his formation as a researcher in the historical field, choosing historical documents – especially images – as history’s main object of study. Making use of Michel de Certeau’s work, the social place in which Ferrez’s historiography is constructed is also explored, outlining his participation at IHGB and on SPHAN’s advisory board as well as his network of collaborators, disclosing an atmosphere of intellectual sociability characterized by personal tyes. This thesis then proceeds, to discuss his practice in research work, considering the books he published, the technical opinions issued as a counselor for SPHAN and the correspondence he maintained with he peers. Finally this thesis interprets the way in which Ferrez viewed Brazil’s history as a memory of European civilization, closely linked for foreigners who played a relevant role while living in the country.