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Zhou, Li. "Problèmes Statistiques pour les EDS et les EDS Rétrogrades". Phd thesis, Université du Maine, 2013. http://tel.archives-ouvertes.fr/tel-00808623.
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Nous considérons deux problèmes. Le premier est la construction des tests d'ajustement (goodness-of-fit) pour les modèles de processus de diffusion ergodique. Nous considérons d'abord le cas où le processus sous l'hypothèse nulle appartient à une famille paramétrique. Nous étudions les tests de type Cramer-von Mises et Kolmogorov- Smirnov. Le paramètre inconnu est estimé par l'estimateur de maximum de vraisemblance ou l'estimateur de distance minimale. Nous construisons alors les tests basés sur l'estimateur du temps local de la densité invariante, et sur la fonction de répartition empirique. Nous montrons alors que les statistiques de ces deux types de test convergent tous vers des limites qui ne dépendent pas du paramètre inconnu. Par conséquent, ces tests sont appelés asymptotically parameter free. Ensuite, nous considérons l'hypothèse simple. Nous étudions donc le test du khi-deux. Nous montrons que la limite de la statistique ne dépend pas de la dérive, ainsi on dit que le test est asymptotically distribution free. Par ailleurs, nous étudions également la puissance du test du khi-deux. En outre, ces tests sont consistants. Nous traitons ensuite le deuxième problème : l'approximation des équations différentielles stochastiques rétrogrades. Supposons que l'on observe un processus de diffusion satisfaisant à une équation différentielle stochastique, où la dérive dépend du paramètre inconnu. Nous estimons premièrement le paramètre inconnu et après nous construisons un couple de processus tel que la valeur finale de l'un est une fonction de la valeur finale du processus de diffusion donné. Par la suite, nous montrons que, lorsque le coefficient de diffusion est petit, le couple de processus se rapproche de la solution d'une équations différentielles stochastiques rétrograde. A la fin, nous prouvons que cette approximation est asymptotiquement efficace.
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Vídeňský, Ondřej. "Analýza bateriových hmot metodami EDS". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-399522.
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This master thesis deals with analysis of battery mass using x-ray spectral microanalysis. For the measurement two scanning electron microscopes equipped with energy dispersive x-ray spectroscopes were used. Appropriate examples were prepaired by standard method. Then elemental analysis was performed with changing conditions of measurement. Two programs were used for spectrums evaluation and in the end the size of errors was observed for every conditions.
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Serrazina, Ricardo Nazaré. "Emulsion Detonation Synthesis (EDS) zirconia-based CERMETs". Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/21884.
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mestrado em Ciência e Engenharia de MateriaisA realização deste trabalho tem como objetivo a produção e caracterização de compósitos de metal em matriz cerâmica (CERMETOS). Assim sendo, e tendo como base pós cerâmicos e compósitos produzidos pela INNOVNANO, foram também produzidos pós por mecanossíntese. Os pós à base de zircónia estabilizada com ítria (YSZ), produzidos por estes dois métodos, foram caracterizados cristalográfica, química, morfológica, reológica, térmica e magneticamente. Os pós foram compactados e sinterizados em vácuo, seguindo-se a sua caracterização, principalmente estrutural, microestrutural, mecânica e magnética. Todos os resultados foram analisados com olhar crítico e tentando relacionar as propriedades físicas e químicas dos pós e compactos verdes com as propriedades finais dos sinterizados. A comparação entre cerâmicos e compósitos (quer pós, quer sinterizados) foi sempre o principal objetivo deste trabalho. Os resultados incluem a avaliação da importância das várias etapas de preparação dos pós, essencialmente no processo produtivo da INNOVNANO, a avaliação da estabilização da fase tetragonal da zircónia, a resposta magnética e a interpretação do decréscimo nas propriedades mecânicas verificado nos compósitos.
This work main goal is to develop metal composites on a ceramic matrix, designated as CERMETs. Hence, and having as starting materials the ceramic and composite powders produced by INNOVNANO, mechanosynthesis powders were also prepared. The yttria stabilized zirconia (YSZ) based powders (produced by those two methods) were crystallographic, chemically, morphologically, rheological, thermal and magnetically characterized. Pressed compacts from the previous powders were prepared and sintered in vacuum conditions, followed by their characterization namely in terms of structure, microstructure, mechanical and magnetic behavior. The results were analyzed with a critical mind, trying to co-relate the physical and chemical properties of the powders and green compacts with the final sintered properties. The comparison between ceramic and composites (either powders, either sintered compacts) was always the main goal during the development of this work. The results include the evaluation of the meaning and importance of the several powders preparation steps that are conducted in INNOVNANO’s producing method, the importance of the tetragonal zirconia phase stabilization, the magnetic response and the interpretation of the decrease in mechanical resistance verified in CERMETs.
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Sondergaard, Krista A. "Non-vascular Ehlers-Danlos Syndrome and Pregnancy: What are the Risks?" Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1339081648.
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Diemling, Maria. "Jonathan Karp/Adam Sutcliffe (eds.): The Cambridge History of Judaism". HATiKVA e.V. – Die Hoffnung Bildungs- und Begegnungsstätte für Jüdische Geschichte und Kultur Sachsen, 2019. https://slub.qucosa.de/id/qucosa%3A34544.
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Tossa, Adaté. "EDS de cascades avec régimes et à priori de dirichlet". Paris 9, 2008. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=2008PA090033.
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Le cadre mathématique de notre travail est l’estimation statistique Bayésienne de mélanges complexes de lois à partir de données temporelles qui sont supposées suivre localement une équation différentielle stochastique (EDS) en milieu aléatoire. L’EDS considérée a été introduite par Schmitt et Marsan pour modéliser la dissipation d’énergie due à l’évolution de la vitesse du vent en milieu turbulent. Cette EDS appelée ici EDS de cascades, dépend de deux paramètres supposés constants, représentant l’un un facteur d’échelle de la cascade et l’autre un coefficient d’intermittence. Cependant des estimations montrent que ces paramètres changent avec l’environnement. Nous proposons dans cette thèse, une extension aux milieux aléatoires du modèle de l’EDS de cascades, en supposant que ses deux paramètres sont régis par une chaîne de Markov à temps continu dont les états représentent les divers régimes atmosphériques. L’originalité de notre travail consiste à placer, comme loi a priori, un Processus de Dirichlet sur l’espace des trajectoires de la chaîne et à proposer une méthode d’estimation spécifique à cette EDF et à ce nouveau modèle, méthode testée aussi bien sur des données simulées que sur des données réelles. Nous mettons au point un algorithme de type Gibbs sampling adapté aux données temporelles qui classifie sur une même trajectoire les différents états de la chaîne en utilisant notamment un schéma stick-breaking approximant le processus de Dirichlet. Des calculs délicats de lois a posteriori ainsi qu’une majoration de l’erreur d’approximation sont présentésCascade Stochastic Differential Equation (SDE), a continuous time model for energy dissipation in turbulence, is a generalization of the Yaglom discrete cascade model. We extend this SDE to a model in random environment by assuming that its two parameters are switched by a continuous time Markov chain whose states represent the states of the environment. Moreover, a Dirichlet process is placed as a prior on the space of sample paths of this chain. We propose a Bayesian estimation method of this model which is tested both on simulated data and on real data
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Silva, Marisa Rodrigues Maia de Oliveira. "Atividades de ciências com orientação CTS/PC num quadro EDS". Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/13486.
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Mestrado em Ensino do 1º Ciclo do Ensino BásicoFace à importância crescente de promover uma educação em ciências desde os primeiros anos de escolaridade, potenciadora de sinergias entre diferentes perspetivas, este estudo teve como finalidade a conceção, produção, implementação e avaliação de atividades de ciências com orientação Ciência-Tecnologia-Sociedade/Pensamento Crítico (CTS/PC), num quadro de uma Educação para o Desenvolvimento Sustentável (EDS). Decorrente da finalidade, formularam-se as questões de investigação: Qual o contributo das atividades de ciências desenvolvidas com orientação CTS/PC, num quadro EDS, para promover aprendizagens dos alunos ao nível da mobilização/construção de conhecimentos científicos e do desenvolvimento de capacidades de PC? Quais as representações dos alunos sobre o contributo das atividades realizadas para a mobilização/construção de conhecimentos científicos e para a mobilização/desenvolvimento de capacidades de PC? Qual a opinião dos alunos sobre as atividades que realizaram? Adotando uma metodologia orientada para a prática, assente num plano de investigação-ação, o estudo foi realizado com uma turma do 1.º ano do Ensino Básico, sendo que, ao longo de quinze sessões, os alunos realizaram as atividades produzidas com orientação CTS/PC, num quadro EDS. Foram recolhidos dados através de vários instrumentos, no âmbito de diferentes técnicas de recolha de dados, incluindo um instrumento de análise das produções dos alunos. Na análise de dados, a técnica privilegiada foi a análise de conteúdo. Os resultados obtidos a partir da análise dos dados recolhidos permitiram concluir que as atividades de ciências desenvolvidas no âmbito do estudo contribuíram para promover aprendizagens ao nível da mobilização/construção de conhecimentos científicos e da mobilização/desenvolvimento de capacidades de PC dos alunos. Na perspetiva dos alunos, as atividades que realizaram foram um contributo relevante para mobilizarem/construírem conhecimentos científicos e para mobilizarem/desenvolverem capacidades de PC. Os alunos manifestaram que gostaram e se envolveram com entusiasmo na sua realização, considerando-as interessantes e motivadoras.
The current study was designed taking into account the importance of promoting science education from the first years of schooling, building convergences between different perspectives – Science-Technology-Society (STS) and Critical Thinking (CT), according to the Education for Sustainable Development (ESD).The study aimed to develop (conceive, produce, implement and evaluate) sciences activities with STS/CT orientation, within an EDS framework. According to the study aim, the research questions formulated were: What is the contribution of the science activities developed with STS/CT orientation, within an ESD framework, to promote students’ scientific knowledge mobilization/construction and CT abilities mobilization/development? What are the students’ representations on the contribution of the activities for the mobilization/construction of scientific knowledge and to the mobilization/development of CT abilities? What is the students’ opinion on the activities that did they carry out? This action-research was carried out with a group of the 1.st year of the elementary school, along fifteen sessions, during which students performed the science activities produced with STS/CT orientation, within an ESD framework. The data were collected through several instruments in the context of different techniques of collecting data, including the development of an instrument of analysis of students´ productions. In the data analysis, the privileged technique was the content analysis. The results obtained from the analysis of the collected data allowed to conclude that the science activities developed in the context of the study contributed to promote students’ scientific knowledge mobilization/construction and student’s CT abilities mobilization/development. From students’ point of view, the science activities were a relevant contribution to promote theirs scientific knowledge mobilization/construction and CT abilities mobilization/development. Students expressed that they like the activities which were performed enthusiastically, considering them interesting and motivating.
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Sears, Jasmine, Ricky Gibson, Michael Gehl, Sander Zandbergen, Patrick Keiffer, Nima Nader, Joshua Hendrickson, Alexandre Arnoult y Galina Khitrova. "TEM EDS analysis of epitaxially-grown self-assembled indium islands". AMER INST PHYSICS, 2017. http://hdl.handle.net/10150/624718.
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Epitaxially-grown self-assembled indium nanostructures, or islands, show promise as nanoantennas. The elemental composition and internal structure of indium islands grown on gallium arsenide are explored using Transmission Electron Microscopy (TEM) Energy Dispersive Spectroscopy (EDS). Several sizes of islands are examined, with larger islands exhibiting high (>94%) average indium purity and smaller islands containing inhomogeneous gallium and arsenic contamination. These results enable more accurate predictions of indium nanoantenna behavior as a function of growth parameters. (C) 2017 Author(s).
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Kharroubi, Idris. "EDS Rétrogrades et Contrôle Stochastique Séquentiel en Temps Continu en Finance". Phd thesis, Université Paris-Diderot - Paris VII, 2009. http://tel.archives-ouvertes.fr/tel-00439542.
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Nous étudions le lien entre EDS rétrogrades et certains problèmes d'optimisation stochas- tique ainsi que leurs applications en finance. Dans la première partie, nous nous intéressons à la représentation par EDSR de problème d'optimisation stochastique séquentielle : le contrôle impul- sionnel et le switching optimal. Nous introduisons la notion d'EDSR contrainte à sauts et montrons qu'elle donne une représentation des solutions de problème de contrôle impulsionnel markovien. Nous lions ensuite cette classe d'EDSR aux EDSRs à réflexions obliques et aux processus valeurs de problèmes de switching optimal. Dans la seconde partie nous étudions la discrétisation des EDSRs intervenant plus haut. Nous introduisons une discrétisation des EDSRs contraintes à sauts utilisant l'approximation par EDSRs pénalisées pour laquelle nous obtenons la convergence. Nous étudions ensuite la discrétisation des EDSRs à réflexions obliques. Nous obtenons pour le schéma proposé une vitesse de convergence vers la solution continument réfléchie. Enfin dans la troisième partie, nous étudions un problème de liquidation optimale de portefeuille avec risque et coût d'exécution. Nous considérons un marché financier sur lequel un agent doit liquider une position en un actif risqué. L'intervention de cet agent influe sur le prix de marché de cet actif et conduit à un coût d'exécution modélisant le risque de liquidité. Nous caractérisons la fonction valeur de notre problème comme solution minimale d'une inéquation quasi-variationnelle au sens de la viscosité contrainte.
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Mania, Juliette Elisabeth. "SEM/EDS-analyser av föremål påträffade i Birka : En jämförande studie". Thesis, Stockholms universitet, Arkeologiska forskningslaboratoriet, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-108667.
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The purpose of this paper was to identify the elements and the alloys that five objects found in Birka consist of and to examine whether there are any significant differences between the presumably imported and domestic objects. The material was analyzed using a scanning electron microscope (SEM) which was equipped with an energy dispersive X-ray spectrometer (EDS) in order to identify the elements that are present and the alloys that the objects are made of. Then the SEM results were compared with the results of previous analyzes that have been performed on finds from Birka in order to investigate how the objects differ in elemental composition and to find out if there are any significant differences between them. The results showed that the objects’ content of the elements analyzed varies as the copper alloys the objects are made of. Only a few objects are made of the same type of copper alloy. A sword chape included in the material and a bridle mount that was analyzed in 2006 are both made of lead bronze. Two oriental mounts included in the material and a sword chape which was analyzed in 2006 are all made of lead bronze in which zinc has been added. There are no significant differences in composition between the presumably imported and domestic objects, but overall lead seems to be a metal that was used more in the domestic production.
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Argumedo, Bustinza Doris. "Van Haute, P. y Corveleyn, J. (Eds.). (2001). Seducction, suggestion, psychoanalysis". Pontificia Universidad Católica del Perú, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/101450.
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Oblitas, Raissa Lima de. "Avaliação da composição elementar de filmes finos de ligas metálicas depositados por Arco Catódico Filtrado em Vácuo utilizando RBS e EDS quantitativo". Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-24102016-115435/.
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Devido à relevância de filmes finos, as técnicas que são utilizadas para produzi-los e também para caracteriza-los tem se tornado importante. Neste contexto, foram analisados filmes finos de até 100 nm, de duas ligas metálicas (cromel e alumel), obtidos a partir da deposição por plasma de Arco Catódico Filtrado em Vácuo (Filtered Cathodic Vacuum Arc - FCVA). O objetivo deste projeto foi avaliar a similaridade em composição elementar entre os materiais utilizados para deposição, que operam como cátodos, e os filmes finos depositados, a partir de medições obtidas pela técnica de microanálise quantitativa Energy Dispersive Spectroscopy (EDS). Para comparação entre resultados e apreciação de compatibilidade, foi realizada avaliação estatística considerando o Teste t, no qual a estatística do teste é dada pela Distribuição t de Student, adotando nível de significância de 5%. Os valores obtidos por EDS Quantitativo para os cátodos foram de (em wt%) (90,3 ± 0,5)% de Ni e (9,72 ± 0,19)% de Cr para o cromel e (95,1 ± 0,8)% de Ni, (2,02 ± 0,14)% de Mn, (1,65 ± 0,04)% de Si e (1,15 ± 0,05)% de Al para o alumel. Já para os filmes finos, foram de (90,2 ± 0,5)% de Ni e (9,8 ± 0,5)% de Cr para o cromel e (95,2 ± 0,4)% de Ni, (2,8 ± 0,4)% de Mn, (0,77 ± 0,17)% de Si e (1,08 ± 0,09)% de Al para o Alumel, ambos apresentando compatibilidade com as medidas por Rutherford Backscattering Spectrometry (RBS) - técnica comumente utilizada para este tipo de espécime. Verificou-se que a composição elementar do filme fino de cromel não apresentou diferença significativa com o cátodo da mesma liga. Entretanto, para o filme fino de alumel, houve evidências de diferença significativa com relação ao cátodo, apontada pelo elemento silício.Due the relevance of thin films, the techniques used to produce and also to characterize them has become important. In this context, it was analyzed thin films up to 100 nm of two alloys (Chromel and Alumel) obtained by plasma deposition using Filtered Cathodic Vacuum Arc (FCVA). The objective of this project was to evaluate the similarity in elemental concentration of the materials used for deposition, which act as cathodes, and the deposited thin films, through measurements obtained by quantitative microanalysis technique Energy Dispersive Spectroscopy (EDS). In order to compare results and compatibility assessment was performed statistical analysis considering the t-test in which the test statistic is given by the Student\'s t - distribution, adopting a significance level of 5%. The values obtained by Quantitative EDS for the cathodes were (in wt%) (90.3 ± 0.5)% of Ni and (9.72 ± 0.19)% of Cr for the Chromel and (95.1 ± 0.8)% of Ni, (2.02 ± 0.14)% of Mn, (1.65 ± 0.04)% of Si and (1.15 ± 0.05)% of Al for the Alumel. As for the thin films, they were (90.2 ± 0.5)% of Ni and (9.8 ± 0.5)% of Cr for the Chromel and (95.2 ± 0.4)% of Ni, (2.8 ± 0.4)% of Mn, (0.77 ± 0.17)% of Si and (1.08 ± 0.09)% for Al Alumel, both featuring compatibility with the measures by Rutherford Backscattering Spectrometry (RBS) - technique commonly used for this type of specimen. It was verified that the elemental concentration of the thin film of Chromel presented no significant difference with the cathode of the same alloy. However, for the Alumel thin film, there was evidence of a significant difference with respect to the cathode, appointed by element Silicon.
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Canli, Sedat. "Thickness Analysis Of Thin Films By Energy Dispersive X-ray Spectroscopy". Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612822/index.pdf.
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EDS is a tool for quantitative and qualitative analysis of the materials. In electron microscopy, the energy of the electrons determines the depth of the region where the X-rays come from. By varying the energy of the electrons, the depth of the region where the X-rays come from can be changed. If a thin film is used as a specimen, different quantitative ratios of the elements for different electron energies can be obtained. Unique thickness of a specific film on a specific substrate gives unique energy-ratio diagram so the thickness of a thin film can be calculated by analyzing the fingerprints of the energy-ratio diagram of the EDS data obtained from the film.
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Kazi-Tani, Mohamed Nabil. "Etude des EDS rétrogrades avec sauts et problèmes de gestion du risque". Phd thesis, Ecole Polytechnique X, 2012. http://pastel.archives-ouvertes.fr/pastel-00782154.
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Cette thèse traite d'une part, de questions de gestion, de mesure et de transfert du risque et d'autre part, de problèmes d'analyse stochastique à sauts avec incertitude de modèle. Le premier chapitre est consacré à l'analyse des intégrales de Choquet, comme mesures de risque monétaires non nécessairement invariantes en loi. Nous établissons d'abord un nouveau résultat de représentation des mesures de risque comonotones, puis un résultat de représentation des intégrales de Choquet en introduisant la notion de distorsion locale. Ceci nous permet de donner ensuite une forme explicite à l'inf-convolution de deux intégrales de Choquet, avec des exemples illustrant l'impact de l'absence de la propriété d'invariance en loi. Nous nous intéressons ensuite à un problème de tarification d'un contrat de réassurance non proportionnelle, contenant des clauses de reconstitution. Après avoir défini le prix d'indifférence relatif à la fois à une fonction d'utilité et à une mesure de risque, nous l'encadrons par des valeurs facilement implémentables. Nous passons alors à un cadre dynamique en temps. Pour cela, nous montrons, en adoptant une approche par point fixe, un théorème d'existence de solutions bornées pour une classe d'équations différentielles stochastiques rétrogrades (EDSRs dans la suite) avec sauts et à croissance quadratique. Sous une hypothèse additionnelle classique dans le cadre à sauts, ou sous une hypothèse de convexité du générateur, nous établissons un résultat d'unicité grâce à un principe de comparaison. Nous analysons les propriétés des espérances non linéaires correspondantes. En particulier, nous obtenons une décomposition de Doob-Meyer des surmartingales non-linéaires ainsi que leur régularité en temps. En conséquence, nous en déduisons facilement un principe de comparaison inverse. Nous appliquons ces résultats à l'étude des mesures de risque dynamiques associées, sur une filtration engendrée à la fois par un mouvement brownien et par une mesure aléatoire à valeurs entières, à leur repésentation duale, ainsi qu'à leur inf-convolution, avec des exemples explicites. La seconde partie de cette thèse concerne l'analyse de l'incertitude de modèle, dans le cas particulier des EDSRs du second ordre avec sauts. Nous imposons que ces équations aient lieu au sens presque-sûr, pour toute une famille non dominée de mesures de probabilités qui sont solution d'un problème de martingales sur l'espace de Skorohod. Nous étendons d'abord la définition des EDSRs du second ordre, telles que définies par Soner, Touzi et Zhang, au cas avec sauts. Pour ce faire, nous démontrons un résultat d'agrégation au sens de Soner, Touzi et Zhang sur l'espace des trajectoires càdlàg. Ceci nous permet, entre autres, d'utiliser une version quasi-sûre du compensateur de la mesure des sauts du processus canonique. Nous montrons alors un résultat d'existence et d'unicité pour notre classe d'EDSRs du second ordre. Ces équations sont affectées par l'incertitude portant à la fois sur la volatilité et sur les sauts du processus qui les dirige.
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Noujeim, Karam Michael. "A user interface to EDS using the X window system and XT /". Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60106.
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A user interface to EDS (Electromagnetic Design System) is designed using the X window System and the X Toolkit. The grammar of expressions provided by the user is validated using a bottom-up parser. Equations are converted to postfix/prefix notation, and later displayed in binary tree representation inside pop-up widgets.The interface allows the user to determine equation interdependencies, and to generate flow graphs for different sets of equations within the same application. Equations may be added or deleted from any set of entered equations at any time. Flow graph nodes and links may be queried for equation information. Retrieved information is displayed inside pop-up widgets.
Finally, the ground work for a user interface package that simplifies X Toolkit programming is outlined. Rules and methods governing user interface components are introduced.
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Prasad, Harsha. "Impact of Municipal Water Characteristics on Corrosion of Steel and Copper Piping". Digital WPI, 2016. https://digitalcommons.wpi.edu/etd-theses/1177.
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This research evaluated corrosion and scale deposition in steel and copper pipe sections from apartment complexes located in Rhode Island (RI), Massachusetts (MA), and Maryland (MD). Piping samples from these locations had corroded at an accelerated rate and consisted of HVAC piping, and domestic copper pipes. Pipes were analyzed by scanning electron microscopy (SEM) and electron dispersive spectroscopy (EDS) to quantify the elemental composition of the samples. The water chemistry of each system was compared to the elemental data to determine correlations. Particular elements from the EDS analysis in comparison to the water quality parameters, Langelier Saturation Index, and Larson Skold indices exhibited inverse and direct correlations. The deposition of corrosion product and scales occurred in all systems that had implemented corrosion control in the form of pH adjustment and inhibitors to prevent infrastructure degradation. Although measures were taken to prevent corrosion, the current practices were not effective at the current dosing rate showing that the municipalities could consider other options such phosphate blend inhibitors and lime as effective corrosion control mechanisms.
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Gharehbaghi, Ali. "Precipitation Study in a High Temperature Austenitic Stainless Steel using Low Voltage Energy Dispersive X-ray Spectroscopy". Thesis, KTH, Materialens processteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-103492.
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Precipitation of second phase particles is a key factor dominating the mechanical properties of high temperature alloys. In order to control and optimize the precipitation effect it is of great importance to study the role of alloying elements in the formation and stability of precipitates. As a favored family of corrosion and creep resistant austenitic stainless steels the 20Cr-25Ni alloy was modified by addition of copper, molybdenum, nitrogen, niobium and vanadium. A set of alloys with similar matrix but varying contents of niobium, vanadium and nitrogen were prepared. Sample preparation process included melting, hot forging, solution annealing and finally aging for 500 h at 700, 800 and 850 ºC.Light optical and scanning electron microscopy revealed micron-scale precipitates on grain and twin boundaries as well as sub-micron intragranular precipitates in all samples. Characterization of precipitates was carried out by means of energy dispersive X-ray spectroscopy (EDS). Among micron-scale precipitates M23C6 carbide was the dominant phase at 700 ºC aging temperature; whereas silicon-rich eta phase (M5SiC) was the main precipitate in samples aged at 800 and 850 ºC. A few sigma phase particles were found in one of the niobium containing samples aged at 700 and 800 ºC. Sub-micron intragranular precipitates were analyzed using low voltage EDS. The spatial resolution of EDS microanalysis at 5 kV accelerating voltage was estimated as almost 100 nm which was at least eight times better than that using the ordinary 20 kV voltage. Also, low voltage EDS revealed the presence of light elements (carbon, nitrogen and boron) in the composition of sub-micron particles thanks to the less matrix effect in absorption of low energy X-rays of light elements. In samples aged at 700 ºC niobium-rich and vanadium-rich carbonitrides were found as the dominant precipitates; whereas they contained much less carbon in samples aged at 800 ºC and mostly became carbon-free nitrides with well-defined cuboidal shapes at 850 ºC aging temperature. This showed that niobium/vanadium-rich nitride phases are stable precipitates at aging temperatures above 700 ºC.The drawbacks of low voltage EDS were indicated as high detection limit (no detection of low- content elements), poor accuracy of quantitative analysis and high sensitivity to surface contamination. Some possible ways to improve the accuracy of low voltage EDS, e.g. longer acquisition time were examined and some other suggestions are proposed for future works.
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Naher, Sabikun. "An archaeometric study of copper slags fom early Bonze Age I at Arslantape, Eastern Anatolia, Turkey". Master's thesis, Universidade de Évora, 2020. http://hdl.handle.net/10174/28089.
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ABSTRACT: 15 copper slags and 2 crucible fragments from the village of the Early Bronze Age I ( V1B2 period, 3100-2900 BC), at Arslantepe, Eastern Anatolia, Turkey, have been analyzed with energy dispersive X-ray fluorescence spectroscopy (EDXRF), powder X-ray diffraction (XRD) and scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) to determine the chemical and mineralogical composition and microstructures as well. The compositional analysis confirms the presence of iron, silicon, and aluminum as the significant elements in the copper slags with the modest level of copper and calcium, and low concentrations of sulphur, potassium, titanium, vanadium, chromium, manganese, zinc, molybdenum and strontium. Powder X-ray diffraction analysis reveals that quartz and fayalite are the major crystalline phases along with the magnetite as minor phase present in the analyzed slag samples. However, the mineralogical composition and SEM-EDS images indicates that some of the analyzed slags were the product of primary copper smelting and other might be formed during the works of metal. The presence of well-formed fayalite crystals in one analyzed slag sample indicates the specific thermodynamics condition, that is heating condition was well controlled during the smelting activities. Through EDXRF, the presence of low concentration of sulphur in all slag samples and the association of copper with sulphur in SEM-EDS image of one sample suggests that ancient metal workers might be exploiting some minerals as a copper ore that were associated with sulphur.
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Ko, Wonsuk. "MODELING AND ANALYSIS OF THE EDS MAGLEV SYSTEM WITH THE HALBACH MAGNET ARRAY". Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3582.
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The magnetic field analysis based on the wavelet transform is performed. The Halbach array magnetic field analysis has been studied using many methods such as magnetic scalar potential, magnetic vector potential, Fourier analysis and Finite Element Methods. But these analyses cannot identify a transient oscillation at the beginning stage of levitation. The wavelet transform is used for analyzing the transient oscillatory response of an EDS Maglev system. The proposed scheme explains the under-damped dynamics that results from the cradle's dynamic response to the irregular distribution of the magnetic field. It suggests this EDS Maglev system that responds to a vertical repulsive force could be subject to such instability at the beginning stage of a low levitation height. The proposed method is useful in analyzing instabilities at the beginning stage of levitation height. A controller for the EDS maglev system with the Halbach array magnet is designed for the beginning stage of levitation and after reaching the defined levitation height. To design a controller for the EDS system, two different stages are suggested. Before the object reaches a stable position and after it has reached a stable position. A stable position can be referred to as a nominal height. The former is the stage I and the latter is the stage II. At the stage I, to achieve a nominal height the robust controller is investigated. At the stage II, both translational and rotational motions are considered for the control design. To maintain system stability, damping control as well as LQR control are performed. The proposed method is helpful to understand system dynamics and achieve system stability.Ph.D.
School of Electrical Engineering and Computer Science
Engineering and Computer Science
Electrical Engineering PhD
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Hampe, Martínez Teodoro. "Maxim P.A.M. Kerkhof, Hugo de Schepper y Otto Zwartjes (eds.), España: ¿ruptura 1492?" Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/114399.
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Irizar, Ana Clara Cadena. "Nel blu, dipinto di blu, five centuries of Blue Roman Glass from the Paletine Hill: a multi-analytical approach to provenance and production technology". Master's thesis, Universidade de Évora, 2020. http://hdl.handle.net/10174/29198.
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Based on a multi-analytical approach, this research aimed to characterize and compare the glass-making processes and provenance of the Roman blu glass collection, dated from the 1st century to Late Antiquity, found in the Helagabalus baths in the North East Palatine archaeological site. The samples were analysed by Optical Microscopy and SEM-EDS to identify homogeneity, glass morphological features like bubbles, inclusions and corrosion. EMPA was applied to determine the elemental composition of major and minor elements, whereas LA-ICP-MS allowed us to define trace elements. Major and minor elements, analysis, performed by EMPA, gave particular information regarding the ingredients (network former, flux, colurants and decoulourants) used in the glass batch. SEM-EDS and LA-ICP-MS in combination with EMPA allowed usto group the collection for provenance and technology information. Comparison of the data with the literature allowed to identify the raw materials provenance. This study highlighted changes in glass-making technology and provenance from the 1st to 5th of the Roman blue glass, collection. The particular study of this collection can give further information about the glass making techniques of that time.
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本田, 安都子. "書評 : Cristina Giorcelli and Paula Rabinowitz (eds.), Exchanging Clothes: Habits of Being 2". 名古屋大学アメリカ文学・文化研究会, 2013. http://hdl.handle.net/2237/19104.
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Calabria, Marcela Pagani. "Microestrutura da dentina observada sob diferentes condições clínicas empregando-se microscopia eletrônica e EDS". Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/25/25148/tde-26032012-154603/.
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A proposta deste trabalho foi analisar qualitativa e semiquantitativamente, em M.E.V. - Técnica Convencional, por Retroespalhamento de Elétrons (BSE) e por Espectroscopia de Dispersão de Raios-X (E.D.S.) - a microestrutura dentinária de dentes em diferentes condições clínicas. Formaram-se 7 grupos, com 5 dentes cada grupo: I- inclusos jovens (IJ); II- hígidos jovens (HJ); III- hígidos adultos (HA); IV- com lesão cariosa oclusal (LCO); V- com lesão cariosa cervical (LCC); VI- com exposição radicular (ER) e VII- com lesão cervical não cariosa (LCNC). Após as extrações, os dentes foram imediatamente fixados em Karnovsky. As porções radiculares e o esmalte coronário foram seccionados, preservando-se o terço cervical dos dentes. Os espécimes dentários foram divididos em duas metades, ambas contendo as superfícies vestibulares quanto as linguais, totalizando 70 espécimes. Cuidado especial foi tomado nos grupos com LCO, LCC e LCNC, garantindo que as lesões fizessem parte de suas duas secções. A análise morfológica foi realizada sobre área de dentina fraturada, em três regiões: próximo à superfície externa, no terço médio e próximo à polpa. Os espécimes foram desidratados em concentração ascendente de etanol e secados em ponto crítico. Metade dos espécimes foi metalizada com ouro, para análise em M.E.V., e a metade homóloga com carbono, para observação em E.D.S. e BSE. Os grupos IJ e HJ não mostraram alterações morfológicas, tanto na lingual quanto na vestibular. As dentinas peritubular e intertubular e os prolongamentos odontoblásticos (POs) estavam evidentes por toda a extensão dentinária, assim como fibrilas de colágeno margeando toda a superfície interna dos túbulos dentinários (TDs), muitas vezes lembrando a lâmina limitans (LL). Os grupos LCC e LCO mostraram grande quantidade de cristais e estruturas tubuliformes (ETfs) na dentina abaixo das lesões, além das demais estruturas vistas no grupos anteriores. A face lingual das LCCs mostrou-se ausência de estruturas intratubulares (EITs). O grupo ER não apresentou EITs. Entretanto, nesse mesmo grupo, os TDs próximos à superfície mostraram-se mais atrésicos quando comparados aos grupos IJ e HJ e a LL era visível por toda a extensão dentinária. Os grupos HA e LCNC mostraram-se muito semelhantes entre si, com cristais obstruindo parcial ou totalmente os TDs. Próximo à região pulpar, os TDs mostravam cristais ao redor dos POs. O grupo LCNC, particularmente, apresentou ETfs com características distintas dos grupos LCC e LCO, pois estas apresentaram-se nos três terços dentinários em menor quantidade. As imagens em BSE mostraram a DI menos mineralizada que a DP, e cristais e as ETfs com características reflexivas semelhantes à DP, identificando-se como es-truturas mineralizadas. No grupo LCNC, notou-se POs e as membranas, ambos com certa reflexão, revestindo os TDs, sugerindo um processo de mineralização. A análise estatística, após obtenção dos valores semiquantitativos em E.D.S., mostrou que todos os grupos continham, na dentina e nas EITs, Ca, P, Mg e S, com exceção da dentina peritubular do grupo LCC que não detectou Mg em sua composição. As estruturas que mostraram maior concentração de Mg foram as ETfs do grupo LCNC. Não houve diferença estatística na razão Ca/P entre as dentinas e EITsThe purpose of this study was to analyze, qualitatively and semiquantitavely, with SEM, BSE and EDS, the dentin microstructure in teeth with different clinical conditions. The teeth were divided in 7 groups (n=5 each one): I- Young non erupted teeth (YNET), II- Young sound teeth (YST), III- Old sound teeth (OST), IV- Occlusal carious lesion (OCL), V- Cervical carious lesion (CCL), VI- Root exposure (RE) and VII- Non carious cervical lesion (NCCL). After extraction the teeth were immediately fixed in Karnovsky. Crows and root were cut off in such a way to preserve the cervical third for the purposes of this investigation. The cervical specimens were fractured in two halves, both containing the lingual and buccal cervical surfaces, totaling 70 specimens. Special care was taken with OCL, CCL and NCCL groups during the fracture to ensure that both fragments enclosed part of their respective lesions. The morphological analysis was performed on the fractured dentin surfaces of both fragments, in three regions: near the external surface, on the middle third and near the pulp chamber. The specimens were dehydrated in ascending series of ethanol concentrations and critical point dried. Half of the specimens were gold sputtered for SEM analysis and the homologous half carbon coated for BSE and EDS observation. The YNET and YST groups showed no morphological changes in both buccal and lingual surfaces. The PD and ID and the OPs were evident throughout the dentin extension. The collagen fibrils were observed layering the walls of dentin tubules in their entire length, resembling the LL. The CCL and OCL groups showed a great amount of Crs and TSs, together with the other same features seen in the previous groups. The lingual surface of the CCL was distinct from the buccal surface and the OPs were limited to the third near the pulp on both surfaces. The RE group did not reveal intratubular structures (ITS). However, on the same group, the diameter of the dentin tubules near the surface was smaller compared to YNET and YST groups and the LL was visible throughout the dentin extension. The OST and NCCL groups were very similar, with Crs partially or totally obstructing the DTs. Near the pulp, the DTs showed Crs around the OPs. The TSs seen in NCCL group were distinct from that of CCL and OCL groups, because these structures were presented in all dentin extension and in a smaller number. The BSE images showed that the intertubular dentin is less mineralized than peritubular dentin. However, TSs and Crs showed the same reflective characteristics of the PD, looking like mineralized structures. In NCCL group, the OPs and the membranes-like structure surrounding the tubules presented some reflection, suggesting a mineralization process of these structures. Statistical analysis after EDS data showed that dentin surface and TSs of all groups contained Ca, P, Mg and S, except the PD of the CCL group, where the Mg was not detected. The tubular structures presented in the NCCL group showed increasing in Mg concentration. There was no statistical difference in the Ca/P ratio between the dentin and the TSs from all groups.
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Castro, Cassiano Costa e. "Metais raros associados ao granito desemborque : estudo mineralogical and chemical study using MEV-EDS". Universidade do Estado do Rio de Janeiro, 2007. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=582.
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O Granito Desemborque, um corpo de forma, aproximadamente, circular, situado no sul do Estado de São Paulo, tem área aflorante de 50 km2 e é representado por um biotita sienogranito. O caráter peraluminoso com teores significativos de K2O e Na2O, juntamente com o baixo conteúdo de CaO, altas razões Fe/Mg, elevados valores de SiO2 e de elementos traços como Zr, Nb e Y, atestam a afinidade alcalina do granito que pode ser classificado como do tipo A. Os teores de Y refletem a presença de fases acessórias como parisita de Ce, itrofluorita e monazita. Columbita, zircão rico em háfnio e cassiterita presentes na associação de minerais acessórios do Granito Desemborque foram analisados semiquantitativamente (teores em peso) por MEV-EDS. Com isso foi possível discriminar duas fases evolutivas para a geração de alguns dos minerais de metais raros associados ao corpo; uma francamente magmática (com subfases granítica e pegmatítica) e uma fase hidrotermal. A columbita (teor médio de Nb2O5 de 66,2% e 6,5% de Ta2O5) é nitidamente gerada na fase magmática sendo que na subfase granítica ela tem presença ubíqua e caráter disseminado. O zircão, por sua vez, ocorre nas duas subfases magmática, sendo que na subfase granítica ele teria um caráter mais tardio. O teor médio das análises foi de 9,3% de HfO2, classificando-o como um zircão rico em háfnio. Na fase hidrotermal, é que se desenrolariam os processos de enriquecimento em Hf desse mineral. A cassiterita, os minerais de REE e boa parte dos minerais radioativos têm a sua formação restrita a fase hidrotermal. Dentre as classificações propostas para granitos mineralizados, o Granito Desemborque se aproxima do tipo peralcalino mineralizado a metais raros com tendência a formar depósitos ou ocorrências de Nb e ETR. Os senões seriam o fato desse corpo não ser peralcalino (ele é peraluminosso) e dos potenciais minerais de Y e ETR só terem sido registrados como inclusões minerais hospedadas nos grãos de cassiterita (ítriocolumbita) e de zircão (xenotímio). A falta de concentrações minerais econômicas de Nb-Hf-Sn associadas ao Granito Desemborque pode ser imputada ao caráter anídrico do magma (tipo-A) e a falta ou limitação do fraturamento hidráulico. A ausência de concentrações minerais econômicas em virtude da remoção erosiva da zona de cúpula não se encontra de acordo com os resultados prospectivos encontrados, pois, a presença da cromita nas amostras de leito ativo coletadas nas drenagens estabelecidas bem no cerne do corpo granítico indica a preservação de restos de pendentes de teto da rocha encaixante (ortognaisses com boudins de rochas ultrabásicas).The Desemborque Granite, a body almost of circular shape, placed in the southernmost part of São Paulo State, has an area of ca. 50 km2. and it is represented by a sienogranite biotite. Its peraluminous features with significant contents of K2O and Na2O, together with low CaO contents, high Fe/Mg ratios, elevated values of SiO2 and trace elements as Zr, Nb and Y, assure the granite alcaline affinity that can be classified as type A. The Y numbers reflect the presence of acessory phases as parasite de Ce, yttrofluorite and monazite. Columbite, zircon rich in hafnium and cassiterite presented in the association of accessory minerals of the Granite Desemborque were semiquantitatively analysed(values in weight) by MEV-EDS. Because of this it was possible to detail the two evolutional phases for the generation of some minerals of rare metals associated to the body; one fairly magmatic (with granitic sub-phases and pegmatitic) and an hidrotermal phase. Columbite (Nb2O5 mean value 66,2% and 6,5% Ta2O5) is clearly generated in magmatic phase and in the granitric sub-phase it has ubiquitous presence and disseminated character. Zircon, in its turn, occurs in the two magmatic sub-phases, and in the granitic sub-phase it would have a later character. The mean value of the analysis was of 9,3% for HfO2, classifying it as a zircon rich in hafnium. In the hidrotermal phase, the enrichment proccesses are developed in Hf of this mineral. Cassiterite, the REE minerals and a large number of radiactive mineral have their formation restricted to the hidrotermal phase. Amongst the proposed classification for the mineralized granites, the Granite Desemborque has an peralkalkine mineralized approach to rare metals with a wide tendency to create deposits or Nb and REE occurences. The opposition could be the fact that this body is not peralkaline (it is peraluminous) and the Y and REE mineral potentials only have been recorded in the hosted mineral inclusions in the cassiterite grains (yttrocolumbite) and of zircon (xenotímio). The lack of profitable Nb-Hf-Sn mineral concentrations associated to the Granite Desemborque can be magma anhydrous character (type-A) and the lack or limitation of the hydraulic fracturing. The absence of profitable mineral concentrations because of the erosive removal of the apical zone is not in agreement with the prospective results found, once the presence of chromite in the samples of the active stream bed collected at the draining which is established exactly in the basis of the granite body indicates the preservation of remaints roof pendant the wall rocks (ortognaisses with boudins of ultrabasic rocks).
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Cianci, Dorella. "Livio Rossetti y Alessandro Stavru (eds.): Socratica 2008. Studies in Ancient Socratic Literature (2010)". Pontificia Universidad Católica del Perú - Departamento de Humanidades, 2011. http://repositorio.pucp.edu.pe/index/handle/123456789/113138.
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Lastres, Dammert Pamela. "Alice Crary y Rupert Read (eds.), The new Wittgenstein, Londres: Routledge, 2000, 403 pp". Pontificia Universidad Católica del Perú, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/119572.
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Duhaut, Noëmie. "Ethan B. Katz, Lisa Moses Leff, Maud S. Mandel (eds.): Colonialism and the Jews". HATiKVA e.V. – Die Hoffnung Bildungs- und Begegnungsstätte für Jüdische Geschichte und Kultur Sachsen, 2018. https://slub.qucosa.de/id/qucosa%3A34576.
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Schwerhoff, Gerd. "Olli Matikainen, Satu Lidman (Eds.), Morality, Crime and Social Control in Europe 1500–1900". De Gruyter, 2016. https://tud.qucosa.de/id/qucosa%3A71347.
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Die in dem Band veröffentlichten Aufsätze entstammen in der Mehrzahl der Feder finnischer Historikerinnen und Historiker und kreisen tatsächlich meist um „crime“ bzw. um kleinere Devianzen. Konzeptuell stellt die knappe Einleitung der Herausgeber ganz auf „soziale Kontrolle“ ab: Entlang der Forschungsgeschichte wird einer engeren Fassung, die soziale Kontrolle als von staatlichen Instanzen ausgehende „planned responses to crime and deviance“ versteht, eine weitere Fassung des Konzeptes gegenübergestellt, bei der alle denkbaren gesellschaftlichen Akteure Kontrollfunktionen wahrnehmen können. Jedoch entfaltet die Einleitung kaum programmatische Ausstahlungskraft für die folgenden Beiträge. So bietet der Band einen bunten Strauß sehr verschiedenartiger Beiträge von unterschiedlicher empirischer Tiefe und konzeptueller Durcharbeitung. Eher der Vollständigkeit halber genannt seien die Aufsätze zur Bedeutung von Spitznamen im ländlichen Finnland im 19. und 20.Jh. (Sofia Kotilainen), über einen spektakulären Serienmörder in Finnland Mitte des 19.Jahrhunderts (Teemu Keskiarja), über einen Kirchstuhlstreit in der westfinnischen Pfarrei Kokemäki Mitte des 18.Jahrhunderts (Ella Viitaniemi), über Vaganten und Einsperrungsinstitutionen in Finnland im 19.Jahrhundert (Päivi Pukero) und zu den Begnadigungen des finnischen Präsidenten gegenüber Staatsbediensteten nach dem Ende des Ersten Weltkriegs (Virpi Anttonen).
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Silva, João Manuel Pereira Tavares. "Desenvolvimento do raciocínio moral através de atividades de clarificação de valores em contexto EDS". Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/23317.
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Mestrado em Ensino do 1º e 2º Ciclos do Ensino BásicoVivemos num mundo complexo, onde a sustentabilidade se torna um desafio cada vez mais urgente. Tomar decisões de âmbito sustentável requer indivíduos, com conhecimentos científicos e atitudes e valores, que considerem o seu papel e impacto numa sociedade cada vez mais global. Por estes motivos, é importante educar os cidadãos para escolhas que considerem os seus valores sem prejudicar os que os rodeiam, procurando garantir a sustentabilidade no presente e no futuro. Desta forma, este estudo teve como finalidade desenvolver atividades orientadas para a promoção do raciocínio moral de alunos do 2.º CEB, num quadro EDS e centradas na abordagem da clarificação de valores. Tendo em conta esta finalidade, foram definidas as questões de investigação: Qual o contributo de atividades, de âmbito EDS, centradas na abordagem da clarificação de valores, no desenvolvimento do raciocínio moral de alunos do 2.º CEB? Qual a opinião dos alunos sobre este tipo de atividades que realizaram? Quais as representações dos alunos acerca das atividades realizadas para o desenvolvimento dos seus conhecimentos e capacidades face ao DS? Importa mencionar que este decorreu numa turma do 6.º ano de escolaridade, numa escola privada, composta por 22 alunos, durante as aulas de apoio. Nesta investigação, de natureza qualitativa, seguindo como plano de investigação, o estudo de caso, os alunos participaram em atividades focadas na abordagem de clarificação de valores, centradas na EDS. Os dados foram recolhidos com recurso a várias técnicas e instrumentos de recolha de dados e analisados, predominantemente, por análise de conteúdo. A partir dos dados recolhidos e analisados, conclui-se que as atividades de clarificação de valores não contribuíram para o desenvolvimento moral da maioria dos alunos em questão. Relativamente à opinião dos alunos, concluise que as atividades foram motivadoras e interessantes. Pela opinião dos alunos, as atividades também contribuíram para o aumento dos seus conhecimentos e capacidade face ao DS.
We live in a complex world where sustainability becomes an increasingly urgent challenge. Making sustainable decisions requires individuals with scientific knowledge and attitudes and values, who consider their role and impact in an increasingly global society. For these reasons, it is important to educate citizens towards choices that consider their values, without harming those around them, while ensuring a sustainable present and future. In this way, this study aims to develop activities oriented to promote the moral reasoning of secondary education students, within an ESD framework and focused on the clarification of values approach. In view of this purpose, were defined the following research questions: What is the contribution of activities, within the scope of ESD, focused on the values clarification approach, in the development of the moral reasoning of secondary education students? What do students think about this type of activities? What are the students' representations about the activities carried out to develop their knowledge and abilities in relation to SD? It is important to mention that this study took place in a class of the 6th grade, in a private school, composed by 22 students, during the classes of support. In this research, of a qualitative nature, following as research plan, the case study, students participated in activities focused on the value clarification approach, centered on ESD. The data was collected using a variety of data collection techniques and instruments, and analysed predominantly by content analysis. From the data collected and analysed, it was concluded that the value clarification activities did not contribute to the moral development of the majority of the students in question. Regarding the students' opinions, it was concluded that the activities were motivating and interesting. In the opinion of the students, the activities also contributed to the increase of their knowledge and abilities towards SD.
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Almutairi, Bandar Alhumaidi A. "Visualizing Evaluative Language in Relation to Constructing Identity in English Editorials and Op-Eds". Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/13591.
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This thesis is concerned with the problem of managing complexity in Systemic Functional Linguistic (SFL) analyses of language, particularly at the discourse semantics level. To deal with this complexity, the thesis develops AppAnn, a suite of linguistic visualization techniques that are specifically designed to provide both synoptic and dynamic views on discourse semantic patterns in text and corpus. Moreover, AppAnn visualizations are illustrated in a series of explorations of identity in a corpus of editorials and op-eds about the bin Laden killing. The findings suggest that the intriguing intricacies of discourse semantic meanings can be successfully discerned and more readily understood through linguistic visualization. The findings also provide insightful implications for discourse analysis by contributing to our understanding of a number of underdeveloped concepts of SFL, including coupling, commitment, instantiation, affiliation and individuation.
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Patriksdotter, Amanda. "Vikingatida förgyllningstekniker : En studie av förgyllningstekniker tillämpade på föremål från Birka med SEM-EDS". Thesis, Stockholms universitet, Arkeologiska forskningslaboratoriet, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-174819.
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Studies with primary focus on Viking age gilding techniques in Scandinavia has not been carried out since the sixties. During the past 50 years knowledge about prehistoric gilding techniques and traces of them in the archeological material, as well as the usage of natural sciences within archaeology, has developed considerably. The aim of this thesis was to revisit the topic of gilding and shed new light on Viking age metalworking in Scandinavia with focus on gilding techniques. The second aim was to determine the possibilities and limitations of the study of gilding with a non-destructive methodology. The surfaces of 13 metal objects, four of which are indigenous and the rest are imported goods, were analyzed with SEM-EDS. The chemical compositions of the gilded layers as well as the underlying silver- or copper alloys were analyzed. Furthermore, observations of micro morphological structures were carried out on the gilt surfaces. Interpretations of both chemical compositions and micro morphology were carried out in order to identify what technique or techniques have been used for gilding. The results show that two of artefacts have not been gilded at all, five of them have been fire gilded and the results of the remaining six objects are inconclusive mainly due to lacking reference data. It can be concluded that further research regarding the aging of gilt surfaces on gilded artefacts, more specifically the loss of mercury in fire gilded surfaces over time, needs to be carried out.
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Diktas, Emine Guncem. "A multi-analytical protocol combining EDXRF, SEM+EDS, μXRD and Monte Carlo simulations applied to analyse non-destructively portuguese corroded copper coins". Master's thesis, Universidade de Évora, 2018. http://hdl.handle.net/10174/24464.
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Performing quantitative analyses on archaeological and cultural heritage metallic artefacts is challenging due to their complex multi-layered internal structure. “Layers” may include
a) Original metal and/or alloy substrate (gold, silver, bronze etc.)
b) Surface patinas enriched in corrosion products sulphides, oxides and/or chlorides compounds
c) Protective treatments applied in past conservation interventions
d) Soil derived incrustations from archaeological burial environment.
To obtain compositional data on the metal substrate, usually these layers have to be removed but this not always possible due to the inherent fragility of the corroded artefacts as it is the case in particular with copper objects such as coins. The setting up of a non-destructive protocol is therefore important. In this study, a protocol combining SEM-EDS, μXRD, EDXRF and Monte Carlo simulations has been tested on a series of Portuguese coins from the 12th to the 19th centuries found at Largo das Olárias and Travessa do Jordão in Lisbon.
1. Analyze non-destructively the corrosion patterns and patinas developed on the surface Portuguese Copper coins from a Lisbon archaeological site (Largo das Olarias) SEM+EDS, μXRD and portable EDXRF
2. Apply the mineralogical and chemical data obtained during the analytical sessions to run Monte Carlo simulations of EDXRF spectra
3. Assess the feasibility of the combined non-destructive protocol in obtaining a reliable quantitative estimation of the metal substrate composition without the need to remove the surface corrosion patinas; RESUMO:
Realizar análises quantitativas em artefactos metálicos arqueológicos de património cultural é um desafio devido à sua estrutura interna com múltiplas camadas. Essas ‘’Camadas’’ podem incluir:
a) Substrato original de metal e / ou liga (ouro, prata, bronze etc.)
b) Patinas de superfície enriquecidas em produtos de corrosão compostos de sulfetos, óxidos e / ou cloretos
c) Tratamentos de protecção aplicados em intervenções de conservação passadas
d) Incrustações derivadas do solo do ambiente de enterro arqueológico.
Para obter dados de composição sobre o substrato metálico, geralmente essas camadas devem ser removidas, porém isso nem sempre é possível devido à fragilidade inerente aos artefactos corroídos, como é o caso em particular de objectos de cobre como as moedas. A criação de um protocolo não destrutivo é, portanto, importante. Neste estudo, um protocolo que combina as simulações SEM-EDS, μXRD, EDXRF e Monte Carlo foi testado numa série de moedas portuguesas dos séculos XII ao XIX encontradas num Largo das Olárias e Travessa do Jordão em Lisboa.
1. Analisar de forma não destrutiva os padrões de corrosão e patinas desenvolvidas na superfície de moedas de cobre portuguesas de um sítio arqueológico de Lisboa SEM + EDS, μXRD e EDXRF portátil.
2. Aplicar os dados mineralógicos e químicos obtidos durante as sessões analíticas para executar simulações Monte Carlo dos espectros EDXRF.
3. Avaliar a viabilidade do protocolo não destrutivo combinado na obtenção de uma estimativa quantitativa confiável da composição do substrato metálico sem a necessidade de remover as patinas de corrosão superficial.
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Tuttle, Richard W. "ELECTROSPUN ALUMINA FIBERS:SYNTHESIS AND CHARACTERIZATION". University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1164040902.
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COSTA, R. A. "Análise de Resíduo de Disparo de Armas de Fogo Utilizando ICP-MS: Caracterização de Munições Limpas". Universidade Federal do Espírito Santo, 2016. http://repositorio.ufes.br/handle/10/7331.
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Previous issue date: 2016-09-29Tendo em vista a forte relação entre os crimes de homicídio e o uso de armas de fogo no Brasil, a Balística Forense tem como importante ferramenta a detecção de resíduos originados por disparo de armas de fogo (GSR - GunShot Residues) nas mãos de um suspeito, contribuindo para determinação da autoria de um disparo. Dentre os tipos de munições existentes, a munição limpa foi desenvolvida na última década para minimizar a exposição dos atiradores ao chumbo (Pb), visto que em munições convencionais este elemento, bem como o Ba e Sb se apresentam em concentrações significativas. Estudos mostram dificuldades na detecção de GSR de munição limpa por espectroscopia de energia dispersiva acoplado a microscopia eletrônica de varredura (MEV/EDS) e teste residuográfico. Técnicas analíticas modernas como a espectrometria de massas com plasma indutivamente acoplado (ICP-MS) vem sendo utilizada como uma análise rápida para a detecção de elementos químicos presentes nos GSR, por apresentar alta sensibilidade, seletividade e caráter multielementar. Desta forma, o objetivo deste trabalho foi avaliar a aplicabilidade da técnica da ICP-MS para quantificar os GSR advindos de munições limpas ou clean range ammunition ou non toxic ammunition utilizando pistola calibre .40 e revólver calibre .38 em função do número de disparos (n = 1-7 e n = 1-5, respectivamente). Os GSR foram coletados nas regiões da pinça-palmar e pinça-dorsal, sendo avaliadas sobre ambas as mãos (direita e esquerda). Os resultados obtidos foram comparados com técnicas clássicas dentro da balística forense: ensaio colorimétrico usando rodizonato de sódio e MEV/EDS. Resultados negativos foram observados para Pb e Ba usando o teste residuográfico para análise de GSR de munições limpas, até 7 disparos. Já a análise por MEV/EDS foi realizada no GSR produzido a partir de n = 7 (pistola calibre .40) e n = 5 (revólver .38) de munição limpa. As fotomicrográficas mostraram que o GSR produzido a partir da munição limpa não apresenta morfologia definida como os do GSR de munição convencional. Além disso, os resultados de EDS identificaram principalmente elementos como C, O, K, Al, S, Si, Cu, Zn, Ti, Cr, Cl, Mo, Sr e Fe. Diferente dos métodos convencionais, a técnica de ICP-MS mostrou resultado positivo para Pb, Ba e Sb com concentração máxima de 2,64 (±0,60) μg∙L-1, 10,9 (±5,44) μg∙L-1 e 0,12 (±0,02) μg∙L-1 para pistola .40 e 4,59 (±1,8) μg∙L-1, 1,95 (±1,1) μg∙L-1, 0,10 (±0,07) μg∙L-1 para revólver .38. Além deles, elementos como Al, Ti, Cr, Mo, Cu, Zn e Sr foram também detectados nos GSR de munições limpas. Observou-se que com o aumento do número de disparos houve o aumento da concentração de todos os elementos investigados e sugere-se que Al, Sr, Zn e Cu possam vir a ser utilizados como novos marcadores de GSR para munições limpas. Portanto, a técnica ICP-MS apresentou resultados promissores e mostrou-se adequada para a análise de GSR de munições limpas
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Belina, Bernd. "Herod, Andrew; Wright, Melissa W. (eds.), Geographies of power : placing scale / [rezensiert von] Bernd Belina". Universität Potsdam, 2006. http://opus.kobv.de/ubp/volltexte/2009/3132/.
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Han, Qinghua. "ANALYSIS AND MODELING OF THE EDS MAGLEV SYSTEM BASED ON THE HALBACH PERMANENT MAGNET ARRAY". Doctoral diss., University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4381.
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Electro-dynamic suspension (EDS) Magnetic levitation (Maglev) with its advantage in maintenance, safety, efficiency, speed, and noise is regarded as a leading candidate for the next generation transportation / space launch assist system. The Halbach array due to its unique magnetic field feature has been widely used in various applications. The EDS system using Halbach arrays leads to the potential EDS system without super-conductor (SC) technology. In this thesis, the Halbach array magnetic field and the dynamics of a novel Halbach array EDS Maglev system were considered. The practical Halbach array magnetic field was analyzed using both a Fourier series approach and the finite element method (FEM). In addition, the optimal Halbach array geometry was derived and analyzed. A novel active magnetic array was introduced and used in the Halbach array EDS Maglev configuration. Further more, since the system is self-regulated in lateral, roll, pitch, and yaw directions, the control was simplified and can be implemented electronically. The dynamic stability analysis and simulation results showed that the system is marginally stable and a control mechanism is needed for stability and ride comfort control. The six degree of freedom (DOF) dynamics, and the vehicle's mass center offset effects on those dynamics were investigated with multiple passive and active magnetic forces. The results indicated that the vehicle's mass center offset has a strong effect on the dynamics of the Maglev system due to the uniqueness of the magnetic force and also that the mass center offset can cause Maglev oscillations at the take off stage. In order to guarantee the dynamic stability and ride comfort of the Maglev system, an optimized active damping and a linear quadratic regulator (LQR) control were developed. Finally, the simulation confirmed the effectiveness of the proposed multi-input and multi-output (MIMO) control designs.Ph.D.
Department of Electrical and Computer Engineering
Engineering and Computer Science
Electrical and Computer Engineering
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Ali, Bouchra. "Typologie fonctionnelle des états de surface du sol [EDS] pour l’extrapolation des propriétés hydro-érosives". Université Louis Pasteur (Strasbourg) (1971-2008), 2008. https://publication-theses.unistra.fr/restreint/theses_doctorat/2008/ALI_Bouchra_2008.pdf.
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Les états de surface du sol [EDS] ont une influence importante sur les propriétés d’infiltration, de ruissellement et d’érosion. Elles résultent de l’interaction de facteurs naturels et agronomiques, dans le cas des sols cultivés, qui contrôlent la structure de la surface et plus particulièrement le système poral. Les EDS peuvent être décrits à partir de l’observation d’un certain nombre de caractéristiques : rugosité, croûtes, mottes de labour, résidus végétaux, macropores. Dans un contexte donné, il est possible de réduire la variabilité des états de surface du sol à un nombre limité de « types » traduisant des combinaisons de ces caractéristiques. L’identification de ces types doit fournir des clés de compréhension de la forte variabilité spatiale des propriétés hydrologiques de surface. L’objectif principal de ce travail est d’élaborer et de tester une méthodologie générique permettant d’identifier les principaux types d’état de surface et de qualifier leur réponse hydrologique et ce dans des contextes variés, cultivés on non. Trois jeux de données d’observation ont été exploités, provenant de sites tunisiens et de sites français en Alsace et dans les Alpes. Chacun des jeux réunit des données d’observation des caractéristiques des EDS ainsi que des données concernant les propriétés hydrologiques de surface acquises sous simulation de pluie ou par infiltrométrie Beerkan ou TRIMS. Pour définir les types d’EDS, nous nous appuyons sur une approche statistique divisée en deux étapes : une analyse en composantes principales (ACP) des variables observées, suivie d’une classification ascendante hiérarchique (CAH). Cette approche permet de définir des types d’EDS qui s’avèrent nettement distincts. Ces types sont ensuite comparés aux propriétés hydrologiques de surface mesurées sous simulation de pluie ou par l’infiltrométrie Beerkan et TRIMS. Pour les trois jeux de données, les résultats, obtenus à partir de l’analyse statistique des relations entre propriétés hydro-érosives et types d’EDS, montrent que la classification des EDS est pertinente par rapport à ces propriétés. Les différents types présentent des propriétés significativement différentes. Cependant, en fonction du paramètre retenu (infiltration, ruissellement ou érosion), le classement des types varie. La gamme de variation des valeurs de conductivité hydraulique à saturation est la plus importante pour le jeu de données du versant alpin de Super-Sauze (2 à 155 mm h-1). Elle s’étend de 6 à 90 mm h-1 pour le jeu de données de Tunisie et de 7 à 32 mm h-1 pour celui des sols limoneux d’Alsace. Concernant les différentes méthodes de mesures des propriétés d’infiltration utilisées, les résultats montrent que, dans un contexte donné, les classements relatifs des différents types d’EDS sont identiques, ce qui est un résultat important. Les valeurs de conductivité obtenues sont cependant différentes. La typologie obtenue par l’approche statistique développée dans cette thèse constitue une référence permettant de différencier et de spatialiser au sein du contexte étudié, les propriétés de ruissellement et d’érosion à partir de trois variables : infiltrabilité des sols, pluie d’imbibition et concentration en sédiment. La démarche proposée est convergente avec celle résultant d’une bonne expertise ; elle présente cependant l’avantage d’être généralisable à un nouveau contexte pour lequel l’expertise n’existe pasSoil surface characteristics [SSC] have an important effect on the infiltration, runoff and erosion processes. SSC result from the interaction between natural and agronomical factors. They influence the soil surface structure, especially the poral system. SSC may be described through the observation of several characteristics: roughness, crust, clods, residues cover and macroporosity. In a specific context, spatial variability of the SSC may be summarized by identifying a limited number of SSC types consisting in combinations of these characteristics. These types may give information about the spatial variability of hydrologic properties. The main objective of this study is to develop and test a generic methodology that allows identifying SSC types and qualifying their hydrologic response in various contexts (with or without cultivation); Three field datasets were used, coming from different contexts on of Tunisia and two of France (in Alsace and in Alps mountains). They gather SSC observations data and hydrologic and erosion values obtained from field measurements at small plot scale (≤1m²) by rainfall simulation or infiltrometry devices (Beerkan or TRIMS). This approach is built on a two steps methodology: a principal components analysis was used to identify predominant variables of SSC in a specific context. Then a hierarchical ascending classification is run on previously selected data. This approach allows defining distinct types of SSC. Each SSC type is finally associated with infiltration, runoff and erosion values. For the three datasets, the results show a good accordance between hydrologic properties and the SSC classification. The different types have significant difference of hydrologic properties, however types sortings according to infiltration, runoff or erosion parameters are different. The higher range of hydraulic conductivity was observed in Super-Sauze context (2 to 155 mm h-1). In Tunisian context, they ranged from 6 to 90 mm h-1 and from 7 than 32 mm h-1 in alsatian context. Concerning the different measurements methods of infiltration properties, rainfall simulation and infiltrometry devices give similar relative sortings of the SSC types, which is an important result. However, absolute values present important differences. Based on a statistical approach, this study develops a typology, which differentiates and allows spatializing the runoff and erosion properties from three variables: infiltrability, imbibition rainfall and sediment concentration. This approach fits well with results of good expert knowledge, but the former interest consists in its application in contexts where no expert knowledge is available
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Henriques, Eliana da Silva. "A tradição na palma da mão: uma abordagem didática com orientação EDS no pré-escolar". Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/21462.
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Mestrado em Educação Pré-Escolar e Ensino do 1º Ciclo do Ensino BásicoO presente trabalho propõe-se relatar o percurso efetuado desde a planificação, conceção, implementação e avaliação de uma abordagem didática, com orientação EDS, implementado num grupo de crianças do Pré-escolar, contextualizado nas tradições de uma cidade portuguesa. Este projeto de investigação teve como principais pilares teóricos a situação de emergência planetária atual e a relevância da Educação para o Desenvolvimento sustentável na atualidade, encontrando-se enquadrado, metodologicamente, num paradigma interpretativo, sendo de natureza qualitativa, inserindo-se da vertente do estudo de caso. Nesta investigação foram adotadas como técnicas de recolha de dados a observação participante, o inquérito por entrevista e a compilação documental. Para que se procedesse à análise dos dados foi elaborado um instrumento de análise de conteúdo, este devidamente validado por um perito e que se aplicou a todos os documentos integrantes do corpus documental. Os resultados desta investigação revelaram que foi ao nível das capacidades que se verificaram mais evidências de aprendizagem por parte das crianças, seguindo-se a subdimensão dos conhecimentos e, por último, a das atitudes e valores.
This paper intends to report the route made from the planning, design, implementation and evaluation of an educational approach with EDS guidance, implemented in a group of children from Preschool, contextualized in the traditions of the city of Aveiro. This research project had as its main theoretical pillars the current planetary emergency situation and the relevance of education for sustainable development today, lying framed, methodologically, an interpretative paradigm, and qualitative
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Ghaderidosst, Joanna. "Malmmikroskopi, SEM-EDS- undersökning och framställning av polerprov från en sektion av Lovisagruvans sulfidmalm, Bergslagen". Thesis, Uppsala universitet, Mineralogi, petrologi och tektonik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-383525.
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I detta arbete har polerprov framställts för att därefter undersökas med malm- och svepelektronmikroskopi (SEM) med energidispersiv röntgenspektroskopisk analys (EDS). Med dessa metoder har mineralsammansättning, strukturer och texturer identifierats och undersökts. De undersökta proverna kommer från borrkärnor genom malmzonen i Lovisagruvan i Bergslagen, södra Mellansverige. Malmen är en tabulär, silverförande Zn-Pb-sulfidmineralisering. De kombinerade undersökningarna av polerproven visar att de huvudsakligen består av zinkblände, blyglans, kvarts, mikroklin, granat, amfibol och pyrit, vilka karakteriseras av texturer som visar på omkristallisation, heterogen deformation och lokal remobilisering. De uppvisar småskaliga texturer som sannolikt är direkt relaterade till uppkomsten av s.k. kulmalmstextur. De ingående mineralens inbördes relationer tyder på att blyglans och zinkblände bildades samtidigt och därefter, under regionalmetamorfa förhållanden, tillväxte pyrit och granat som porfyroblaster. Majoriteten av texturerna och strukturerna är sekundära och visar på en kraftig senare överprägling av malmen genom metamorfos och flerfasig deformation under olika tryck- och temperaturförhållanden.In this project polished sections have been prepared for study by means of ore and scanning electron microscopy (SEM) with energy dispersive x-ray spectroscopy (EDS). The application of these methods allows mineralogy, structures and textures to be characterized. This was done within the EU H2020-funded project X-Mine. The studied samples are from drill cores transecting the ore zone of the Lovisa mine (Lovisagruvan), which is located in Örebro County in the Bergslagen ore province, south central Sweden. Here, a tabular, stratiform silver-bearing Zn-Pb sulphide ore is mined. Studies of the polished ore sections show that the samples mainly contain sphalerite, galena, quartz, microcline, garnet, amphibole and pyrite, characterized by textures of recrystallisation, heterogeneous deformation and localized remobilization. The studied samples from the main ore and exhibit textures directly related to the formation off the so-called ball ore. The textural interrelationships of the major minerals indicate that galena and sphalerite formed penecontemporaneously, and then under regional metamorphic conditions, pyrite and garnet formed as porphyroblasts. The majority of the present textures and structures are secondary, representing different stages of metamorphism and deformation under variable P-T-conditions, post-dating original ore formation.
Real-Time Mineral X-Ray Analysis for Efficient and Sustainable Mining, H2020 X-Mine, Projekt-id: 730270
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Bourdelle, Franck. "Thermobaromètrie des phylloscilicates dans les séries naturelles : conditions de la diagénèse et du métamorphisme de bas degré". Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00616543.
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Les illites et les chlorites sont des minéraux ubiquistes dans la plupart des roches diagénétiques. Leurs compositions chimiques dépendent des conditions physiques subies (pression, P ; température, T) et de la composition de l'encaissant (e.g. Vidal et al., 1999 ; Parra et al., 2002a, 2002b). Ces minéraux peuvent donc potentiellement être de très bons marqueurs de l'histoire de l'enfouissement, et sont à la base de nombreuses méthodes empiriques ou thermodynamiques d'estimation des conditions P-T.Une compilation de données naturelles et la comparaison des thermobaromètres existants ont permis d'établir leurs limitations respectives. Pour s'en affranchir, un nouveau modèle ordonné de solution solide pour les chlorites a été développé, qui rend compte des forts contenus en silicium observés dans les chlorites naturelles de basses températures. La calibration de ce nouveau thermobaromètre sur des domaines géologiques variés de BT-BP a été testée sur des analyses de chlorites naturelles de la Gulf Coast (Texas) au pic de température (où les données P-T ont été mesurées in situ) et montre d'excellents résultats. Concernant les illites, le modèle thermodynamique le plus abouti (Dubacq et al., 2010) a également été testé de manière à estimer sa précision. L'étude a été complétée par la quantification de l'influence du fer ferrique. Les analyses chimiques utilisées ont été obtenues grâce à un protocole analytique à haute résolution spatiale. Alliant FIB et MET-EDS, ce protocole a permis une étude microtexturale et chimique fine des chlorites et des illites. Il en ressort que ces minéraux possèdent une diversité intracristalline dans leurs compositions et que la zonation chimique résultante apparaît comme une potentielle source d'erreurs dans la calibration des thermobaromètres, tout en permettant d'envisager la notion d'équilibre à l'échelle locale.Cette approche a été utilisée pour quantifier les trajets P-T d'unités géologiques des Alpes de Glarus. Ces résultats, comparés à ceux obtenus avec des méthodes thermobarométriques conventionnelles, donnent une bonne image des processus d'enfouissement et d'exhumation des roches de basse température. Ainsi, il apparaît que chaque composition enregistre une portion du chemin P-T rétrograde. D'une manière générale, chaque zone d'un même cristal renvoie à une partie de l'histoire de la roche.
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Smyth, Joan Anne. "A study of the pathology and pathogenesis of egg drop syndrome (EDS) virus infection in fowl". Thesis, Queen's University Belfast, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356920.
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Hussain, Jassim. "Lessons for American companies in adapting to local cultures : a case study of EDS in Bahrain". Thesis, Northumbria University, 2010. http://nrl.northumbria.ac.uk/2607/.
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This research focuses on American companies operating in Bahrain, employing Bahrainis whose national culture governs their daily routine. Making EDS a case study, this research explores the conflicts that arise at the work place when organisational culture encounters national culture and customs. Even with extensive globalization, particularly in the Middle East, there is a lack of research exploring the influence of national culture on the local employees, the impact of national culture of host countries on the operations of multinational companies or guidelines for American companies to follow while venturing to set up business in Bahrain. This research follows a social constructionist paradigm, utilizing reflexive qualitative interviews conducted with EDS managers and EDS local employees, analysed through template analysis, to explain complex social processes which govern the national culture and the conflicts created when organisational culture is imposed upon the local employees. The findings of this research offer a holistic picture of the previously unrecognized alienation and resentment that arises when organisational culture is imposed on the local work force in Bahrain, without understanding the cultural influences that define them. The study discovered that American companies should create an awareness and understanding in their expatriate managers about the national culture and the impact of organisational culture on the local workforce already governed by their own national culture. The thesis offers guidelines to the local government policy makers to develop practice based training for local employees to meet the challenges of working in a multinational company. The research bridges the gap in perceptions between the local employees and American companies, thus paving the way to mutually beneficial working relationships. Finally the thesis develops a practice based framework by integrating influencing factors into policy making process, thus providing a practical guide to American companies setting out to do business in the Middle East, as well as to local governments in the Middle East.
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Ariza, Paula Costa. "Composição de urólitos vesicais de cães determinada por espectroscopia de energia dispersiva (EDS) e análise química". Universidade Federal de Goiás, 2014. http://repositorio.bc.ufg.br/tede/handle/tede/4646.
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Urolithiasis is frequently and recurrently observerd on dogs.. Uroliths are crystalline concretions that form in the lumen of the urinary tract due to urine oversaturation by minerals. They may lead to serious consequences, such as obstruction of the urinary flow. An efficient treatment depends on the compositional analysis of the uroliths This study aimed to evaluate the composition of dog’s urinary calculi in the city of Goiânia, by using chemical analysis and energy dispersive spectroscopy – EDS. Comparisons between the composition found and individual and clinical characteristics of the patients were made, as well as comparisons between both techniques. Analysis were held on 55 surgical removed uroliths fom the bladder of dogs. Struvite was present in 51 of the uroliths (15 isolatedly), calcium phosphate in 32 (always associated to struvite), calcium oxalate in five (two isolatedly), urate in five (two isolatedly) and silica was present in four (none of the uroliths was composed only by silica). The most common combination of compounds was that of struvite and calcium phosphate. EDS permitted both the evaluation of the different regions of the uroliths and the microscopical observation of the sample structure, but didn’t allow the correct identification of the urate. The association between both techniques was efficient on evaluating the calculi composition.
A urolitíase acomete frequentemente e de maneira recorrente os cães. Os urólitos são concreções cristalinas que se formam no lúmen do trato urinário devido à supersaturação da urina por minerais. Podem levar a graves consequências, como a obstrução do fluxo urinário. O tratamento eficaz depende da análise adequada da composição dos urólitos presentes. Com o presente estudo objetivou-se avaliar a composição de cálculos urinários de cães atendidos no Município de Goiânia, fazendo uso de análise química por meio o uso de reagentes comerciais e da espectroscopia de energia dispersiva – EDS, de modo a estabelecer a relação entre a composição dos urólitos e características individuais e clínicas dos animais, bem como a comparação entre ambas as técnicas. Foram analisados 55 urólitos cirurgicamente removidos da vesícula urinária de cães. Dos cálculos analisados, 51 apresentaram estruvita (15 de maneira isolada), 32 fosfato de cálcio (todos associados à estruvita), cinco oxalato de cálcio (dois apenas com esse mineral), cinco urato (dois apenas com esse mineral) e quatro sílica (nenhum apresentava sílica isoladamente em sua composição). A combinação mais comum foi a de estruvita com fosfato de cálcio. O EDS permitiu a avaliação da composição das diferentes regiões dos cálculos de maneira independente, bem como a análise microscópica da estrutura do mesmo, mas não possibilitou a identificação específica do urato. Desse modo a sua associação à técnica química a torna uma técnica eficiente para a análise dos urólitos.
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Cook, Noble David. "Curatola Petrocchi, Marco y Mariusz S. Ziólkowski (eds.). Adivinación y oráculos en el mundo andino antiguo". Pontificia Universidad Católica del Perú, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/121778.
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Vega-Centeno, Máximo. "David F. Hendry & Kenneth Wallis (eds.), Econometrics and Quan- titative Economics, Basil Blackwell, Oxford 1984". Economía, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/117796.
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Guibovich, Pérez Pedro M. "Kohut, Karl y Sonia Rose (eds.). La formación de la cultura virreinal. III. El siglo XVIII". Pontificia Universidad Católica del Perú, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/121569.
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Gonzales, Gil Patricia. "“Science and Art. The Painted Surface” by Antonio Sgamellotti, Brunetto Giovanni Brunetti y Costanza Miliani (Eds.)". Revista de Química, 2016. http://repositorio.pucp.edu.pe/index/handle/123456789/101022.
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Repaso de algunos de los aspectos más destacados e interesantes del libro “Science and Art. The Painted Surface”, una obra de contenido multidisciplinar (ciencia, arte e historia) cuya lectura recomendamos.Short review of the most important and interesting sections of the multidisciplinary science book that we strongly recommend: "Science and Art. The Painted Surface”.
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Kohler, George Y. "Elliot N. Dorff and Jonathan K. Crane (eds.): The Oxford Handbook of Jewish Ethics and Morality". HATiKVA e.V. – Die Hoffnung Bildungs- und Begegnungsstätte für Jüdische Geschichte und Kultur Sachsen, 2015. https://slub.qucosa.de/id/qucosa%3A34967.
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Moreira, Filipe Ramiro Tavares. "Abordagem da temática das plantas num contexto EDS orientado para o pensamento crítico no 1º CEB". Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/16018.
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Mestrado em Ensino do 1º e 2º Ciclo do Ensino BásicoNuma sociedade ocidental que se apresenta em constante mutação é impossível dominar todo o conhecimento, daí que haja a necessidade de se dotar os jovens alunos de ferramentas que lhes permitam enfrentar a incerteza do futuro. Uma ferramenta imprescindível para os ajudar a ultrapassar dificuldades com que se confrontem são as suas capacidades de Pensamento Crítico (PC), porquanto podem concorrer para tomarem decisões mais racionais. Neste sentido, este estudo, desenvolvido numa turma de 2.º ano do 1.º CEB com 18 alunos, tem como finalidade desenvolver (adaptar, conceber, produzir, implementar e avaliar) atividades promotoras de PC num contexto de Educação para o Desenvolvimento Sustentável (EDS), tendo por base a temática das plantas. Decorrente da finalidade, formularam-se as questões de investigação: Qual o contributo das atividades promotoras de PC na promoção deste tipo de pensamento dos alunos? Qual o contributo das atividades promotoras de PC para a construção/mobilização de conhecimentos dos alunos? Qual a opinião dos alunos acerca das sessões que envolveram atividades promotoras de PC? Quais as representações dos alunos acerca das atividades promotoras de PC? Neste estudo, optou-se por uma metodologia orientada para a prática, assente num plano de investigação-ação. Os alunos realizaram atividades promotoras de PC, num contexto EDS, relacionadas com a temática das plantas abordada na área disciplinar de Estudo do Meio. Recolheram-se dados através de vários instrumentos no âmbito de diferentes técnicas de recolha de dados, incluindo um instrumento de análise das produções dos alunos. Na análise de dados, a técnica privilegiada foi a análise de conteúdo. Os resultados obtidos sugerem que as atividades promotores de PC desenvolvidas no âmbito do estudo contribuíram para a mobilização/desenvolvimento de capacidades de PC dos alunos e para a mobilização/construção de conhecimentos científicos. Na opinião dos alunos, as aulas em que se implementaram atividades promotoras de PC foram mais motivadoras e mais produtivas que as outras aulas de Estudo do Meio. Pela perspetiva dos alunos, as sessões em que realizaram as atividades promotoras de PC contribuíram para a mobilização/desenvolvimento de capacidades de PC e para a mobilização/construção de conhecimentos científicos.
In a Western society that presents itself constantly changing it is impossible to master all knowledge, hence there is the need to equip young students with tools that allow them to face the uncertain future. An indispensable tool to help overcome future difficulties is their Critical Thinking (PC) capabilities that could enable them to make more rational decisions. In this sense, this study developed a class of 2nd year of primary school with 18 students, aims to develop (adapt, develop, produce, implement and evaluate) promoting activities of PC in the context of Education for Sustainable Development (ESD), based on the subject plants. Arising from the purpose, were formulated research questions: What is the contribution of the promoter activities of PC in promoting this type of student thinking? What is the contribution of the promoter activities of PC for building / mobilization of knowledge of the students? What is the opinion of the students about the sessions that involved promoting activities of PC? What are the representations of students about promoting activities of PC? In this study, we chose a methodology oriented to practice, based on a research action plan. Students performed promoter activities of PC, an ESD context, related to the theme of the plants discussed in the area of Environmental Studies. Data was collected through various instruments in different techniques of data collection, including a tool for analysis of students' productions. In data analysis, the preferred technique was content analysis. The results suggest that prosecutors PC activities developed within the study contributed to the mobilization/development capabilities of PC students and the mobilization/construction of scientific knowledge. In the opinion of the students, the classes in promoting activities that were implemented in PC were more motivating and more productive than the other science classes. For prospective students, the sessions in which they performed the promoter activities of PC contributed to the mobilization/capacity development for PC and mobilization/construction of scientific knowledge.
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Dutra-Corrêa, Maristela [UNESP]. "Ablação de esmalte e dentina bovinos e humanos com laser de Ti:safira no regime de femtossegundos: análises morfológicas e fisico-químicas comparativas". Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/101347.
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dutracorrea_m_dr_sjc_prot.pdf: 7276288 bytes, checksum: b030fe5d93bf385445adf0346edc979e (MD5)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Dentes bovinos têm sido convencionalmente utilizados em pesquisas odontológicas substituindo dentes humanos. Diferenças nas propriedades físico-químicas, estruturais e morfológicas dos substratos representarão diferenças na resposta frente a diversos tratamentos. Foi investigada a ablação em esmalte e dentina de dentes bovinos (30) e humanos (30) com laser de Ti:Safira, no regime de femtossegundos (70fs), com λ= 800±1 nm, taxa de repetição=1 KHz, utilizando diferentes potências médias com diferentes tempos de exposição. Foram realizadas análises morfológicas e físico-químicas. Os corpos-de-prova foram observados ao microscópio de luz, ao MEV e analisados por EDX. As microcavidades em esmalte (bovino e humano) apresentaram ablação precisa, integridade e definição das margens. No esmalte humano não houve danos térmicos ou microfraturas; o bovino apresentou microfraturas, provavelmente resultado de sua menor resistência à ablação com laser. As microcavidades da dentina (bovina e humana) apresentaram bordas definidas, entretanto com microfraturas, sendo que na dentina bovina foram mais numerosas, mais amplas e mais intensas, mostrando maior susceptibilidade frente à irradiação com laser. Quanto à proporção Ca/P, as alterações proporcionais entre números de átomos de Ca em relação ao P, não foram estatisticamente significantes, para nenhum tecido. Conclui-se que o laser de Ti:Safira no regime de femtossegundos, além de muito rápido, potente e seguro, tem a vantagem de poder ser bem controlado e preciso, promovendo profundidades pequenas e específicas. Diante dos resultados e dependendo do tipo de tecido, fica evidente a necessidade de prévio conhecimento das diferenças entre eles antes da direta extrapolação dos resultados obtidos em substrato bovino para humano.
Bovine teeth have been conventionally used in dental research to replace human teeth. Differences in the physicochemical, structural and morphological properties of these substrates cause differences in their response to several treatments. This study investigated the ablation of enamel and dentin of bovine teeth (30) and human teeth (30) using a Ti:Sapphire laser at Femtosecond pulse width (70fs), λ= 800±1nm and repetition rate of 1 KHz. Different output power levels and irradiation times were investigated. Morphological and physicochemical analysis were conducted. Irradiated specimens were evaluated under light microscopy, SEM and EDX. Microcavities in bovine and human enamel showed accurate ablation, with sharp margins and preserved morphologies. Human enamel did not exhibit induced thermal damage or microfractures; bovine enamel presented microfractures, probably due a lower resistance to laser ablation. The microcavities in dentin (bovine and human) presented defined borders, yet with microfractures, which were more frequent, wider and more intense in the bovine dentin, demonstrating a higher susceptibility to laser irradiation. Concerning the Ca/P ratio, the proportional alterations between the numbers of Ca atoms compared to P atoms were not statistically significant for any tissue. In this study Femtosecond Ti:Sapphire laser showed to be a fast, powerful and safe ablation system. Additionally, it promotes removal at small and specific depths. Considering the present results and depending on the type of tissue, it is clear that previous knowledge on the differences between them is required before direct extrapolation of results obtained in bovine substrate to the human substrate.