Tesi sul tema "TZM - SiC"
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Contri, Boris. "Procédés d’assemblages céramique – métal : étude des couples Inconel®625 – Alumine et Titane Zirconium Molybdène (TZM) – Carbure de silicium". Electronic Thesis or Diss., Limoges, 2023. http://www.theses.fr/2023LIMO0093.
Testo completoThis work has for objective to present the results obtained for the ceramic-metal bonding by hot-pressing in two cases: Inconel®625 / Alumina and TZM / Silicon carbide. All the thesis take place according to the last results obtained for similar bonding, in the laboratory IRCER, by studying the feasibility of direct bonding and bonding after pre-oxidising the metal part. A part of this study is then dedicated to the oxidation behaviour of inconel®625 under CO2 using a thermobalance with a sample hot introduction. Using the oxidation kinetics obtained, the reaction mechanism is proposed and the conditions for the metal pre-oxidation determined.Then during the manuscript are presented the processes and the results obtained after variations of parameters such as temperature and the heat treatment time for the two couples of materials. The absence of inter-phase formation in the couple Inconel®625 / Alumina and the formation of a complex inter-phase in the couple TZM / Silicon carbide allow us to propose two studies with different metal-ceramic bonding.A last part is dedicated to the characterization and the understanding of the bonding obtained in each case. To explain the properties of the samples obtained we used scaning electron microscopy but also numerical simulation for the first couple Inconel®625 / Alumina and tensile test for the second couple TZM / Silicon carbide
Nitek, Kevin W. "Americas [sic] automotive competitiveness and TQM". Online version, 1998. http://www.uwstout.edu/lib/thesis/1998/1998nitekk.pdf.
Testo completoLozano-Perez, Sergio. "TEM crack tip investigations of SCC". Thesis, University of Oxford, 2002. http://ora.ox.ac.uk/objects/uuid:7e503ff9-782a-4f74-b184-dddaa96e03e2.
Testo completoLee, Sang Kwon. "Processing and characterization of silicon carbide (6H-SiC and 4H-SiC) contacts for high power and high temperature device applications". Doctoral thesis, KTH, Microelectronics and Information Technology, IMIT, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3335.
Testo completoSilicon carbide is a promising wide bandgap semiconductormaterial for high-temperature, high-power, and high-frequencydevice applications. However, there are still a number offactors that are limiting the device performance. Among them,one of the most important and critical factors is the formationof low resistivity Ohmic contacts and high-temperature stableSchottky diodes on silicon carbide.
In this thesis, different metals (TiW, Ti, TiC, Al, and Ni)and different deposition techniques (sputtering andevaporation) were suggested and investigated for this purpose.Both electrical and material characterizations were performedusing various techniques, such as I-V, C-V, RBS, XRD, XPS,LEED, SEM, AFM, and SIMS.
For the Schottky contacts to n- and p-type 4H-SiC, sputteredTiW Schottky contacts had excellent rectifying behavior afterannealing at 500 ºC in vacuum with a thermally stableideality factor of 1.06 and 1.08 for n- and p-type,respectively. It was also observed that the SBH for p-type SiC(ΦBp) strongly depends on the choice the metal with alinear relationship ΦBp= 4.51 - 0.58Φm, indicating no strong Fermi-level pinning.Finally, the behavior of Schottky diodes was investigated byincorporation of size-selected Au nano-particles in Ti Schottkycontacts on silicon carbide. The reduction of the SBH isexplained by using a simple dipole layer approach, withenhanced electric field at the interface due to the small sizeof the circular patch (Au nano-particles) and large differenceof the barrier height between two metals (Ti and Au) on both n-and p-SiC.
For the Ohmic contacts, titanium carbide (TiC) was used ascontacts to both n- and p-type 4H-SiC epilayers as well as onAl implanted layers. The TiC contacts were epitaxiallydeposited using a co-evaporation method with an e-beam Tisource and a Knudsen cell for C60, in a UHV system at low substrate temperature(500 ºC). In addition, we extensively investigatedsputtered TiW (weight ratio 30:70) as well as evaporated NiOhmic contacts on both n- and p-type epilayers of SiC. The bestOhmic contacts to n-type SiC are annealed Ni (>950ºC)with the specific contact resistance of ≈ 8× 10-6Ω cm2with doping concentration of 1.1 × 10-19cm-3while annealed TiW and TiC contacts are thepreferred contacts to p-type SiC. From long-term reliabilitytests at high temperature (500 ºC or 600 ºC) invacuum and oxidizing (20% O2/N2) ambient, TiW contacts with a platinum cappinglayer (Pt/Ti/TiW) had stable specific contact resistances for>300 hours.
Keywords: silicon carbide, Ohmic and Schottky contacts,co-evaporation, current-voltage, capacitance-voltagemeasurement, power devices, nano-particles, Schottky barrierheight lowering, and TLM structures.
Monteiro, Filho José Oleriano. "O Diabo tem três caras". [S. l.], 2013. https://repositorio.ufsc.br/handle/123456789/106779.
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O presente trabalho focaliza as maneiras como o Diabo é apresentado na literatura brasileira contemporânea especificamente nos contos O hóspede, de Frei Betto, Eu e Bebu na hora neutra da madrugada, de Rubem Braga, Alma, vendo e Belzebu.com, de Luis Fernando Veríssimo, Lênin desce aos infernos, de Paulo Coelho e Nostalgia do amor ausente, de Walmor Santos. Na busca para o alcance do objetivo proposto pesquisou-se as três formas principais como Satã aparece na literatura e na teologia, que são apresentadas nos três primeiros capítulos, a saber: a face de anjo, a face de besta e a face humana. No quarto capítulo é feita a análise dos contos supracitados enfocando com qual das faces propostas na pesquisa o Diabo é apresentado. Verificou-se ainda que este personagem passou por diversas metamorfoses ao longo da história e, apesar de ter perdido o poder de impor o medo, continua sendo importante no meio teológico bem como um dos maiores personagens da literatura de todos os tempos.
Abstract : This paper focuses on the ways that the Devil is presented in contemporary brazilian literature specifically tales O hóspede, of Frei Betto, Eu e Bebu na hora neutra da madrugada, of Rubem Braga, Alma, vendo and Belzebu.com, of Luis Fernando Veríssimo, Lênin desce aos infernos, of Paulo Coelho and Nostalgia do amor ausente, of Walmor Santos. In seeking to achieve the proposed objective was investigated three main ways as Satan appears in literature and theology, which are presented in the first three chapters, namely: the angel face, the face of the beast and the human face. In the fourth chapter the analysis is made of the afore mentioned tales focusing on which of the proposed faces in the research presented is the Devil. It was also found that,this,character,has.gone,through several metamorphoses throughout history and despite having lost the power to impose fear, remains important amid theological as well as one of the greatest literary characters of all times
Pawley, C. "The use of in-situ ion-irradiation/TEM techniques to study radiation damage in SiC". Thesis, University of Salford, 2014. http://usir.salford.ac.uk/32489/.
Testo completoPrudente, Mauro Godoy. "O conceito de exist?ncia na metaf?sica de S?o Tom?s de Aquino". Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2008. http://tede2.pucrs.br/tede2/handle/tede/2801.
Testo completoEsta disserta??o tem como principal objetivo examinar aquele que pode ser considerado o termo fundamental da sem?ntica tomista: o conceito de exist?ncia. O Aquinate, em sua Teologia natural, utiliza os termos Deus e Exist?ncia como estritamente sin?nimos. Desse modo, cabe evidenciar os aspectos mais importantes de sua reflex?o metaf?sica, a fim de chegar ao conceito de Deus como A Exist?ncia (Ipsum esse subsistens). S?o Tom?s, para atingir esse resultado, deve demonstrar que, se todos os entes acess?veis ? percep??o humana existem por outro (ab alio), ent?o deve haver pelo menos um ser que exista por si (ens a se). ? este ser que responde pela causa primeira de tudo o mais que se possa afirmar, com verdade, que exista, no sentido forte do termo.
Souza, Alcindo Mariano de. "Despertando responsabilidade social no ensino m?dio por meio de tem?ticas associadas ? f?sica nuclear". Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/16065.
Testo completoMany discussions about the role of the school are on the agenda, in an increasingly complex society. Sociologists, educators, anthropologists, researchers of different areas seek that role. The objective of this dissertation is to contribute what we can consider the central role for the physics teaching, citizenship training. We have elaborated a didactic proposal to increase the interest of high school students on issues of social relevance and, throughout it, to promote the formation of attitudes of social responsibility, enhancing the formation of a more politically and socially active citizen. For the preparation of the proposal, studies were made on education for citizenship and on attitudes change, using as its main theoretical foundation the researches on the Science, Technology and Society curricular emphasis. The teaching of Nuclear Physics was integrated to our proposal, due to its pedagogical potential for the discussion of social, political and economic subjects related to scientific concepts and associated technologies. The educational proposal we have produced was applied on a high school class of a private school at Natal-RN. It was composed from the controversial issue involving the installation of nuclear power plants in Brazilian northeast. The methodology of role playing, in which students assumed social roles and produced specific subsidies for a public hearing and a later referendum, both simulated. In the analysis of the implementation of the proposal, we highlighted the difficulties but also the possibilities and the relevance of exercising skills such as reasoning, finding information, and arguing about of social problems. The results of the research showed the possibility of meaningful learning on Nuclear Physics contents, through this social, political, economic, scientific and technological contextualization using a controversial and real issue together with mechanisms that trigger for greater popular participation, as public hearing. It has also been identified changes in attitude by some students about issues related to Nuclear Physics. We hope, through this dissertation, to contribute to the formation of future citizens as well as to the initiative of teachers-researchers with pedagogical aims similar to those in the present work
Muitas discuss?es sobre o papel da escola est?o em pauta, em uma sociedade cada vez mais complexa. Soci?logos, educadores, antrop?logos, pesquisadores de diferentes ?reas procuram estabelecer esse papel. O objetivo desta disserta??o ? contribuir com o que se pode considerar o papel central para o ensino da F?sica: a forma??o para cidadania. Foi elaborada uma proposta de interven??o visando a despertar o interesse de alunos do Ensino M?dio para quest?es de relev?ncia social e, por meio dela, estimular posturas e atitudes de responsabilidade social, potencializando a forma??o de um cidad?o mais ativo pol?tica e socialmente. Nessa perspectiva, foram feitos estudos sobre forma??o para a cidadania e sobre mudan?as de atitude, utilizando como principal referencial te?rico a ?nfase curricular Ci?ncia, Tecnologia e Sociedade. O ensino da F?sica Nuclear foi integrado a essa proposta, em fun??o de seu potencial pedag?gico na discuss?o de quest?es sociais, pol?ticas e econ?micas, articulada com conceitos cient?ficos e tecnologias associadas. A proposta de ensino foi aplicada em uma turma de Ensino M?dio de escola particular da cidade de Natal-RN e fez uso da quest?o controversa que envolve a implanta??o das usinas nucleares no Nordeste. A metodologia de jogo de pap?is propiciou aos alunos assumirem personagens sociais espec?ficos e constru?rem conhecimentos para dar subs?dios ? realiza??o de uma audi?ncia p?blica e, posteriormente, de um plebiscito, ambos simulados. Na an?lise da implementa??o da proposta, ressaltam-se as dificuldades, mas tamb?m as possibilidades e a relev?ncia do exerc?cio de habilidades como as de argumenta??o, busca de informa??es, e discuss?o de problemas sociais. Os resultados da pesquisa mostraram a possibilidade de aprendizado significativo de conte?dos da F?sica Nuclear, por meio da atividade, que constituiu um exemplo de ensino de F?sica com contextualiza??o social, pol?tica, econ?mica, cient?fica e tecnol?gica, utilizando, no caso, uma quest?o controversa real associada a mecanismos que despertam para maior participa??o popular, como a audi?ncia p?blica. Identificam-se tamb?m mudan?as de postura por parte de alguns alunos em rela??o a assuntos referentes ? F?sica Nuclear. Espera-se, com a disserta??o, contribuir para a forma??o de futuros cidad?os bem como com a iniciativa de outros professores-pesquisadores que apresentem objetivos de ensino similares aos assumidos no trabalho
Naguib, Mina. "On the security of VoIP mobile network operator and international carrier interconnects". Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199056.
Testo completoBriem, Tim Benjamin [Verfasser]. "Mechanismen, die nach NMDA-Rezeptor-Blockade zur disseminierten Apoptose im sich entwickelnden Rattengehirn führen / Tim Benjamin Briem". Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2008. http://d-nb.info/102294178X/34.
Testo completoCAMPOS, Lidiane Benites de. "Proposta de abordagem tem?tica com enfoque CTS no ensino de f?sica: Produ??o de energia el?trica". Universidade Federal Rural do Rio de Janeiro, 2017. https://tede.ufrrj.br/jspui/handle/jspui/2326.
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This work aimed to develop a thematic approach within a CTS (Science-Technology-Society) focus to physics teaching, dealing with the issue of "Electric Energy Production". The CTS focused teaching approaches scientific knowledge in the technological and social context of the learner and relates it to their everyday experiences, leading them to reflect on historical, ethical, political and socioeconomic aspects, and thus providing skills and values that help them to take responsible decisions and attitudes. In our case, the proposal was applied in a public school in the city of Angra dos Reis, in the State of Rio de Janeiro, to be evaluated and reworked according to the needs verified. The theme was chosen to be worked in this place, because the city houses the only nuclear power plant in Brazil, being a subject of extreme importance for the population and that allows the CTS approach with emphasis on the reality of the students. However, the approach was not restricted to the nuclear power plant, but involved all means of producing electric energy, such as hydroelectric, thermoelectric, with its variations of fuels, wave power plant, solar power plants and wind power plants, so that the general theme Production Of Electric Energy was divided into three sub-themes: Hydroelectric Plants, Other Modes of Energy Production and Nuclear Plants. The objective of this approach, besides teaching physical concepts involved in the processes of electric energy production, is also to make students aware of the risks, consequences and benefits of each mode of production, to have them reflect and evaluate the most to be able to actively participate in decision-making processes involving such issues. The final product of this work is a didactic sequence with varied didactic methods and resources, to serve as a guide for other teachers who wish to adopt the proposal. The text presents a brief history of science education in Brazil, its peculiarities and needs that justify the proposal and also presents the CTS movement and its main characteristics, that guide this work. The methodology adopted was the Action-research, which allowed the readjustment of the proposal throughout its application. The results were very promising and showed that the teaching of physics with a CTS approach, practiced through a thematic approach focused on students' reality, can be a means to promote a quality scientific education and to train citizens able to understand the world and the Society in which they live.
Este trabalho teve como objetivo desenvolver uma proposta de abordagem tem?tica com enfoque CTS (Ci?ncia-Tecnologia-Sociedade) para o ensino de f?sica, abordando o tema ?Produ??o de Energia El?trica?. O ensino com enfoque CTS aborda os conhecimentos cient?ficos no contexto tecnol?gico e social do educando e o relaciona com suas experi?ncias cotidianas, levando-o a refletir sobre aspectos hist?ricos, ?ticos, pol?ticos e socioecon?micos, fornecendo assim habilidades e valores que o auxiliem na tomada de decis?es respons?veis e atitudes. No nosso caso, a proposta foi aplicada em uma escola p?blica da cidade de Angra dos Reis, no Rio de Janeiro, para que fosse avaliada e reelaborada de acordo com as necessidades verificadas. O tema foi escolhido para ser trabalhado neste local, pois a cidade abriga a ?nica usina nuclear do Brasil, sendo um assunto de extrema import?ncia para a popula??o e que possibilita o enfoque CTS com ?nfase na realidade dos alunos. Por?m, a abordagem n?o ficou restrita ? usina nuclear, mas envolveu todos os meios de produ??o de energia el?trica, tais como hidrel?tricas, termoel?tricas e suas varia??es de combust?veis, usina de ondas, usinas solares e usinas e?licas, de modo que o tema geral Produ??o de Energia El?trica foi dividido em tr?s subtemas: Usinas Hidrel?tricas, Outros Modos de Produ??o de Energia e Usinas Nucleares. O objetivo desta abordagem, al?m de ensinar conceitos f?sicos que envolvem os processos de produ??o de energia el?trica, ?, tamb?m, conscientizar os alunos dos riscos, consequ?ncias e benef?cios de cada modo de produ??o, lev?-los a refletir e avaliar quais os modos mais vantajosos, para que estejam aptos a opinar e participar ativamente de processos decis?rios envolvendo tais quest?es. O produto final deste trabalho ? uma sequ?ncia did?tica com m?todos e recursos did?ticos variados, para servir como guia para outros professores que desejem adotar a proposta. O texto apresenta um breve hist?rico do ensino de ci?ncias no Brasil, suas peculiaridades e necessidades que justificam a proposta e apresenta tamb?m o movimento CTS e suas principais caracter?sticas, que norteiam este trabalho. A metodologia adotada foi a pesquisa-a??o, o que permitiu a readequa??o da proposta ao longo de sua aplica??o. Os resultados foram muito promissores e mostraram que o ensino de f?sica com enfoque CTS, praticado atrav?s de uma abordagem tem?tica voltada para a realidade dos alunos, pode ser um meio de promover uma educa??o cient?fica de qualidade e formar cidad?os aptos a compreender o mundo e a sociedade em que vivem.
Doherty, John E. "SNAFU reconsidered the evolution of writing a true war story from Vonnegut's "Slaughterhouse five" to Tim O'Brien's "How to tell a true war story", and the blogs of "The sandbox" /". Click here for download, 2009. http://proquest.umi.com/pqdweb?did=1697854261&sid=1&Fmt=2&clientId=3260&RQT=309&VName=PQD.
Testo completoLeverich, Edward Phillip. "Mitochondrial import of the small Tim family of proteins in Saccharomyces cerevisiae and". Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1573943851&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.
Testo completoSong, Yang. "Rétention d'eau et microstructure fine de l'argilite de Bure". Thesis, Ecole centrale de Lille, 2014. http://www.theses.fr/2014ECLI0008/document.
Testo completoIn the context of deep underground storage of radioactive nuclear waste, it is important to identify the saturation hysteresis of the host rock, i.e. of Callovo-Oxfordian (COx) claystone, and its porosity and pore size distribution. Firstly, six different cycles of relative humidity are applied for saturation hysteresis, which is not observed in the cycles with low magnitude. Secondly, a new method is proposed for measuring porosity, which uses injection of gas to evaluate the pore volume. In contrast to porosity given by water adsorption, the gas injection method provides larger porosity values of around 5%. The gas injection method is also used to quantify the sorption-desorption isotherms of COx claystone, which are significantly different from those obtained by the gravimetric method, with a bigger pore volume accessible to gas in relative humidities < 43%. Finally, by Focused Ion Beam/Scanning Electron Microscopy (FIB/SEM), we obtain 2D image stacks and 3D reconstructed pore volumes, by which porosity and pore size distribution are quantified down to 20nm, as well as pore orientation and anisotropy. At a higher resolution (below 1nm), Transmission Electron Microscopy (TEM) imaging reveals significant amounts of smaller pores (of a few nm) between clay aggregates
Takara, Luciana Miyuki. "?N?is pixa voces pinta, vamu ve quem tem mais tinta?: a media??o do espa?o f?sico e social na promo??o do desenvolvimento da imagina??o de adolescentes do Ensino M?dio". Pontif?cia Universidade Cat?lica de Campinas, 2017. http://tede.bibliotecadigital.puc-campinas.edu.br:8080/jspui/handle/tede/914.
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Conselho Nacional de Pesquisa e Desenvolvimento Cient?fico e Tecnol?gico - CNPq
This study is based on the premise that a school?s physical space is constructed socially, asi-de from having the constitution of a dynamic place in constant transformation for teaching and learning, and in thus, takes on a dimension that symbolizes the meanings that it produ-ces. We identified agents of action in the school environment, these being students as well as teachers and other staff members. Therefore, the objective of this study is to investigate the relations produced in the school environment by high school students and teachers, as well as how the ripple effects of these relations play out in the school?s physical and social space. Our hypothesis is : that in comparison with the initial years of basic education, the last years lack investment in the diversity of materials for student learning. The physical space, being one of these possible materials, when it?s not mediated by teaching, becomes the stage for different attitudes about the school. When ideas and perspectives about the school don?t find room for dialogue, this relation can emerge in the care/neglect of the space, while at the same time interfering with development and coexistence among students and teachers. To conduct this research, we developed intervention research utilizing Cultural-Historical Psychology as a theoretical and methodological basis.We conducted this research with high school students and teachers attending night school, at a public school in a city of the state of S?o Paulo). Bi-weekly meetings were held with students, in which main activities inclu-ded the interpretation of images and the creation of artistic works such as drawings, pain-tings, and graffiti, fostering discussion about the meanings that they attribute to the school environment, aiming to transform the space. The research results show the prevalent use of physical and psychological tools as instruments of control, articulated by teachers and ad-ministrators. Regarding the students, we see graffiti as a psychological instrument that aims to transgress the rules imposed on them. We also identified the characteristics of mediations that predominate in the school, such as pragmatic order in contrast with the aesthetic expe-rience, which can foster dialogue about different ways of bringing meaning to the school environment and the pedagogical activities. Lastly, we recognize the important role played by participants when they develop their imaginations in the articulation of diverse positions and experiences, which allow for the conciliation of different meanings that inhabit the very same place.
Este estudo assume o pressuposto de que o espa?o f?sico da escola ? constru?do, al?m de se constituir como lugar din?mico em constante transforma??o para o ensino e a aprendi-zagem, assume-se, assim, uma dimens?o simb?lica pelas significa??es que produz. Identi-ficamos como agentes das a??es sobre o espa?o escolar tanto alunos quanto professores e demais funcion?rios. Assim, o objetivo desta pesquisa ? investigar as rela??es produzidas no ambiente escolar por alunos e professores do Ensino M?dio, bem como essas rela??es repercutem no espa?o f?sico e social da escola. Tem-se por hip?tese que, em compara??o com as s?ries iniciais da educa??o b?sica, as s?ries finais carecem de investimento na di-versidade de materiais para a aprendizagem do aluno. O espa?o f?sico, sendo uma dessas poss?veis materialidades, quando n?o mediado para o ensino, passa a ser palco para diferen-tes posicionamentos frente ? escola. Quando ideias e perspectivas a respeito da escola n?o encontram di?logo, esta rela??o pode transparecer no cuidado/descuidado com o espa?o ao mesmo tempo em que interfere no desenvolvimento e na conviv?ncia tanto de alunos quanto de professores. Para a realiza??o deste estudo, desenvolvemos uma pesquisa-interven??o com estudantes e professores do 1? ano do Ensino M?dio do per?odo noturno, de uma escola estadual do interior de S?o Paulo, utilizando-se como aporte te?rico-metodol?gico a Psi-cologia Hist?rico-Cultural. Foram realizados encontros quinzenais com os alunos em que se teve como atividades principais a leitura de imagens e a produ??o de natureza art?stica, como desenhos, pinturas, grafites, dentre outros de modo a favorecer a discuss?o a respeito dos sentidos que atribuem ao espa?o escolar, visando sua transforma??o. Como resultado da pesquisa, constatamos o uso predominante de instrumentos f?sicos e psicol?gicos como parte do controle feito por parte dos professores e pela gest?o e, por parte dos alunos, perce-bemos a picha??o como instrumento psicol?gico que visa a transgress?o de regras impostas. Identificamos tamb?m a qualidade das media??es que predominam na escola como a de ordem pragm?tica em contraposi??o com a experi?ncia est?tica, que pode favorecer o di?lo-go de diferentes maneiras de significar o espa?o escolar e a atividade pedag?gica. Por fim, reconhecemos o importante papel desenvolvido pela imagina??o na articula??o de posicio-namentos e experi?ncias diversas, o que possibilita a concilia??o de significa??es diferentes a respeito de um mesmo lugar.
Guedes, Luciano da Silva. "Monitoramento geoambiental do estu?rio do Rio Para?ba do Norte - PB por meio da cartografia tem?tica digital e de produtos de sensoriamento remoto". Universidade Federal do Rio Grande do Norte, 2002. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18745.
Testo completoConselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico
The North Para?ba River Estuary, located in the eastern portion of the Para?ba State, Northeast Brazil, on coordinates 34?50 00 -34?57 30 S and 6?55 00 -7?7 30 W, constitutes a fluvio-marine plain formed by the North Para?ba River and its tributaries Sanhau?, Paroeira, Mandacaru, Tiriri, Tambi?, Ribeira and Guia. This estuary comprises an area of about 260 km2. Increasing human demands on the estuary area and inadequate environment managing have generated conflicts. The present work main purpose is to evaluate the geodynamic evolution of the North Para?ba River Estuary in the period from 1969 to 2001, using digital image processing techniques, thematic digital cartography and multitemporal data integration, combined to geological-geophysical field surveys. The SUDENE cartographic database, converted to digital format were, used to obtain occupation and topographic maps from 1969 and to generate a Digital Elevation Model (DEM). Digital Landsat 7 ETM+ and Spot HRVIR-PAN satellite images interpretation allowed the environmental characterization of the estuary. The most important digital processing results were achieved color composites RGB 5-4-3, 5-3-1, 5-2-NDWI and band ratio 7/4-5/3-4/2, 5/7-3/1-5/4). In addition the fusion image technique RGBI was used by the inclusion of the Spot HRVRI and Landsat 7 ETM+ panchromatic band on I layer with RGB triplets 5-4-3, 5-3-1 and 5/7-3/1-5/4. The DEM and digital images integration allowed the identification of seven geomorphological units: coastal tableland, flowing tray, tide plain, fluvial terrace, submerged dune, beach plain and beach). Both Side Scan Sonar and Echosound were used to analyse underwater surface and bedforms of the estuarine channel, sand predominance (fine to very fine) and 2D dune features 5 m wide and 0.5 m height. This investigation characterized the estuary as an environment dominated by regimen of average flow. The channel depth varies between 1 m and 11 m, being this last quota reached in the area of Porto de Cabedelo. The chanel estuary is relatively shallow, with erosion evidences mainly on its superior portion, attested by sand banks exposed during the low tide. Multitemporal digital maps from 1969 and 2001 integration were obtained through geoprocessing techniques, resulting the geodynamic evolution of the estuary based on landuse, DEM geomorphology and bathymetric maps
O Estu?rio do Rio Para?ba do Norte, localizado na por??o oriental do Estado da Para?ba, Nordeste do Brasil, entre as coordenadas 34?50 00 S a 34?57 30 S e 6?55 00 W e 7?7 30 W, constitui uma plan?cie fl?vio-marinha formada pelo rio Para?ba do Norte e seus afluentes Sanhau?, Paroeira, Mandacaru, Tiriri, Tambi?, Ribeira e Guia, envolvendo uma ?rea de aproximadamente 260 Km2. A crescente press?o populacional sobre o estu?rio vem gerando conflitos e um manejo inadequado deste ambiente. O presente trabalho teve como objetivo principal avaliar a evolu??o geodin?mica do Estu?rio do Rio Para?ba do Norte, no per?odo de 1969 a 2001, por meio do processamento digital de imagens de sensoriamento remoto, da cartografia tem?tica digital e da integra??o de dados georreferenciados multitemporais, combinados a uma base geol?gica-geof?sica obtida em levantamentos de campo. A partir das cartas da SUDENE foram obtidos os mapas digitais de uso e ocupa??o do solo de 1969 e o topogr?fico, sendo este ?ltimo utilizado na gera??o do MDT. O processamento digital das imagens dos sat?lites Landsat 7 ETM+ e Spot HRVIR-PAN possibilitou a gera??o de produtos imagens utilizados como base na identifica??o e caracteriza??o geoambiental do estu?rio no per?odo atual (composi??es coloridas das bandas 5-4-3, 5-3-1, 5-2-NDWI e das raz?es das bandas 7/4-5/3-4/2, 5/7-3/1-5/4 combinadas em RGB). A t?cnica de fus?o de imagens RGBI foi utilizada com a inclus?o da banda pancrom?tica do Spot HRVIR e do Landsat 7 ETM+ na camada I nos trios de bandas em RGB 5-4-3, 5-3-1 e 5/7-3/1-5/4. A integra??o do MDT com as imagens digitais possibilitou a identifica??o de sete unidades geomorf?logicas no estu?rio (tabuleiro costeiro, vertente, plan?cie de mar?, terra?o fluvial, dunas subaquosas, plan?cie praial e praia). O Sonar de Varredura Lateral (Side Scan Sonar) e o Ecobat?metro, associados ?s coletas de sedimentos de fundo forneceram informa??es sobre as condi??es atuais da superf?cie de fundo do canal estuarino, revelando o predom?nio de areias (areia fina a muito fina) e fei??es dunares 2D com largura de 5m e altura de 0.5 m, em m?dia, caracterizando o estu?rio como um ambiente dominado por regime de fluxo m?dio. A profundidade varia de 1 m a 11 m, sendo esta ?ltima cota alcan?ada nas proximidades do Porto de Cabedelo. De maneira geral o estu?rio ? relativamente raso, com evid?ncias de assoreamento principalmente na sua por??o superior, comprovado pela presen?a de dunas subaquosas expostas durante a mar? baixa. Por meio de t?cnicas de Geoprocessamento foi poss?vel integrar os dados de 1969 com os de 2001, resultando na gera??o dos mapas digitais multitemporais uso e ocupa??o do solo, MDT, gemorfol?gico e batim?trico, representativos da evolu??o geodin?mica do estu?rio
Collina, Alessandro. "Analisi e progettazione dei processi aziendali per la certificazione del sistema gestione qualità. Il caso SACMI S.C. - Business Beverage". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amslaurea.unibo.it/2133/.
Testo completoAvella, Castiblanco Jorge. "Electromagnetic modeling for antenna design and specifications in tunnels of arbitrary cross-section and answering to the electromagnetic constraints of the environment of the railway domain". Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10189.
Testo completoThis thesis aims to develop original and appropriate methodologies to model the propagation of EM waves in tunnels of any shape and to propose methodologies to optimize the specification, design and positioning of the antenna in the tunnel. We proposed a novel method for full-wave modal analysis to treat the case of EM wave propagation in structures of large electric dimensions or confined environments of any shape such as tunnels. This method is a modal approach which is based on the 2.5D TLM algorithm and Matrix Pencil algorithm for the discrimination of modes in lossy structures in which the modal density is high and the modes overlap. We considered new boundary conditions called SIBC (Surface Impedance Boundary Condition) for dielectric waveguides with losses. To analyze the general case and several realistic tunnel configurations, we proposed a new classification of modes. Indeed, the classification of existing methods is no longer applicable due to depolarization effects in some realistic cases. A new methodology for determining the specifications and positions of antennas in confined or guided structures was then developed. This methodology is based on a combination of modal analysis and optimization techniques to adjust the weights of the different modes in the tunnel. This approach is used in the case of adaptive antennas, but it has never been applied to the case of multipath propagation modes in the tunnel
Fernandes, Ilnah de Oliveira. "Produ??o do conhecimento na educa??o f?sica: an?lise epistemol?gica dos anais do grupo de trabalho tem?tico ?inclus?o e diferen?a? do Col?gio Brasileiro de Ci?ncias do Esporte (CBCE) DE 2003 A 2013". Universidade Estadual de Feira de Santana, 2016. http://localhost:8080/tede/handle/tede/521.
Testo completoMade available in DSpace on 2017-10-31T00:06:01Z (GMT). No. of bitstreams: 1 Disserta??o final.final.pdf: 1174050 bytes, checksum: 41d2ab0bf1c26d061741c869e1077a85 (MD5) Previous issue date: 2016-07-13
Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
The object of study and analysis of this research are the articles published in the Thematic Working Group Inclusion and Difference proceedings Inclusion and Difference of the Brazilian Congress of Sports Sciences, between 2003 and 2013. The general objective is to identify the epistemological bases present in the production of knowledge in Physical Education, from the annals of the mentioned Thematic Working Group, and how these bases respond to the issue of inclusion of students with disabilities. For this purpose, we present how to constitute the relationship between the characterization of the research, the main issues addressed and the inclusion perspectives found in each approach. Using an analytical tool in consonance with the paradigmatic matrix, that points out the technical, methodological, theoretical and epistemological levels. This methodological procedure made it possible to realize, in the 31 articles analyzed, that 90% used the Phenomenological-Hermeneutic approach and 10% used the Critical-Dialectic approach, and has not identified any article used the Empirical-Analytical approach. We found that each level of the instrument used for analysis of the articles made evident the predominance of the approach taken, in other words, in the articles in which the Phenomenological-Hermeneutic approach was predominant, it was observed that the discussion is focused on understanding the phenomena and where these have as a base. In the articles using the Critical-Dialectic approach we note that the discussion was taking as a basis the issues of social context and its alternative processing. Given the limitations found in this research, both personal and time to deepen some debate, it is necessary that further research be done in order to expand and advance the contributions in the knowledge production of physical education, and exclusion / inclusion, pointing out the various conflicts that implies in this context.
Esta pesquisa tem como fonte de estudo e an?lise os artigos publicados nos anais do Grupo de Trabalho Tem?tico Inclus?o e Diferen?a do Congresso Brasileiro de Ci?ncias do Esporte (CONBRACE), entre os anos de 2003 e 2013. O objetivo geral ? identificar as bases epistemol?gicas presentes na produ??o do conhecimento em Educa??o F?sica, a partir dos anais do citado Grupo de Trabalho Tem?tico (GTT), e como estas bases respondem ? quest?o da inclus?o de alunos com defici?ncia. Com este intuito, apresentamos como se instituem as rela??es entre a caracteriza??o da pesquisa, as principais tem?ticas abordadas e as perspectivas de inclus?o em cada abordagem encontrada. Utilizando um instrumento de an?lise em conson?ncia com a matriz paradigm?tica, que aponta os n?veis t?cnico, metodol?gico, te?rico e epistemol?gico. Este procedimento metodol?gico possibilitou perceber nos 31 artigos analisados, que 90% utilizaram a abordagem Fenomenol?gica-Hermen?utica e 10% a abordagem Cr?tico-Dial?tica, sendo que n?o foi identificado nenhum artigo que utilizou a abordagem Emp?rico-Anal?tica. Verificamos que cada n?vel do instrumento utilizado para an?lise dos artigos deixou evidenciada a predomin?ncia da abordagem adotada, ou seja, nos artigos em que a abordagem Fenomenol?gica-Hermen?utica foi predominante, foi poss?vel observar que a discuss?o ? centrada na compreens?o dos fen?menos e onde estes t?m como base. Nos artigos em que utilizaram a abordagem Cr?tico-Dial?tica, constatamos que a discuss?o tomava como base as quest?es do contexto social e as alternativas de transforma??o deste. Diante das limita??es encontradas nesta pesquisa, tanto pessoais quanto de tempo para aprofundar alguns debates, se faz necess?rio que outras pesquisas sejam feitas na perspectiva de ampliar e avan?ar nas contribui??es da produ??o do conhecimento da Educa??o F?sica, da exclus?o/inclus?o apontando os diversos conflitos que implicam neste contexto.
Pořádek, Jiří. "Implementace informačního modelu v prostředí systémové architektury". Master's thesis, Vysoká škola ekonomická v Praze, 2013. http://www.nusl.cz/ntk/nusl-198090.
Testo completoZamani, Marzieh. "The role of the JNK/AP-1 pathway in the induction of iNOS and CATs in vascular cells". Thesis, University of Hertfordshire, 2013. http://hdl.handle.net/2299/10626.
Testo completoOrnek, Cem. "Performance characterisation of duplex stainless steel in nuclear waste storage environment". Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/performance-characterisation-of-duplex-stainless-steel-in-nuclear-waste-storage-environment(4db73e9b-c87c-40a6-9778-0b823b1c499f).html.
Testo completoHo, Chun-Yu, e 何雋禹. "Ultra-high Resolution TEM Analysis of Defect in Si Ion-irradiated Single Crystal 3C-SiC and SA-Tyrannohex SiC Fiber-bonded Composite at High Temperatures". Thesis, 2013. http://ndltd.ncl.edu.tw/handle/87520553331323002166.
Testo completo國立清華大學
核子工程與科學研究所
101
Silicon carbides (SiC) are considered as one of the promising candidates for structural and core materials used in fusion reactor and high temperature gas-cooled reactor (HTGR) due to its high thermal stability, and good resistance to irradiation and chemical attack. Single crystal 3C-SiC with less intrinsic defects was used to precisely characterize the radiation-induced defects in 3C-SiC. In addition, there are limited discussions related to radiation effect of SA-Tyrannohex fiber-bonded composite at high temperatures. Therefore, in this study, single crystal 3C-SiC thin film and SA-Tyrannohex SiC fiber-bonded composite were irradiated at 1000℃ to 1350℃ with 7MeV Si3+ ion to simulate the neutron irradiation in reactors. The microstructure of the irradiated SiC was examined by using high resolution transmission electron microscope (HRTEM) and spherical aberration corrected scanning TEM (Cs-corrected STEM). In irradiated single crystal 3C-SiC, high resolution images showed that the planar defects were extrinsic stacking faulted loop with changing atomic sequences and intrinsic stacking faulted loop, i.e. vacancy loop. The atomic configurations were confirmed by STEM annular bright field image. However, no void has been found in single crystal 3C-SiC due to formation of vacancy loops, vacancies releasing from surface, or too small to be visible (<1 nm). In addition, dislocation loops, voids, and edge dislocations in SA-Tyrannohex SiC fiber-bonded composite after irradiation were investigated. This SiC composite are able to suppress void growth and lower the void density after high-temperature irradiation due to its small grain size (~300 nm). Besides, larger voids (with diameter 10-40 nm) formed in alumina with preferred orientation after irradiation perhaps resulting in degradation of strength of the SA-Tyrannohex SiC fiber-bonded composite.
CALABRETTA, CRISTIANO. "Defects in SiC: from hetero-epitaxial growth to ion implantation". Doctoral thesis, 2020. http://hdl.handle.net/11570/3180697.
Testo completoFranz, Chelsey E. "The influence of collegiate football on congnitive functioning as determined by the Standard Assessment of Concussion (SAC[superscript TM]) test". Thesis, 2004. http://hdl.handle.net/1957/30217.
Testo completoVenugopal, Nandakumar. "Design of GPS based transducer interface module (TIM) (based on IEEE 1451 standard)". 2006. http://proquest.umi.com/pqdweb?did=1203571621&sid=7&Fmt=2&clientId=39334&RQT=309&VName=PQD.
Testo completoTitle from PDF title page (viewed on Mar. 15, 2007) Available through UMI ProQuest Digital Dissertations. Thesis adviser: Wobschall, Darold. Includes bibliographical references.
Qeblawi, Dana. "The effect of Y-TZP surface treatments on flexural strength and resin shear bond strength to human dentin". 2008. http://proquest.umi.com/pqdweb?did=1588784831&sid=10&Fmt=2&clientId=39334&RQT=309&VName=PQD.
Testo completoTitle from PDF title page (viewed on Feb. 12, 2009) Available through UMI ProQuest Digital Dissertations. Thesis adviser: Munoz, Carlos A. Includes bibliographical references.
Bluteau, Jocelyn. "Les réseaux bayésiens pour identifier la composition arborescente du couvert forestier à partir d'images Landsat TM /". 2004. http://proquest.umi.com/pqdweb?did=885679431&sid=1&Fmt=2&clientId=9268&RQT=309&VName=PQD.
Testo completoMoisan, Steve. "Effets cardiovasculaires du décapeptide leu-val-hémorphine-7 (fragment 32-41 de l'hémoglobine humaine) et de l'hémoglobine HemeAssist tm, chez le rat anesthésié /". 1997. http://proquest.umi.com/pqdweb?did=733619811&sid=6&Fmt=2&clientId=9268&RQT=309&VName=PQD.
Testo completoSur la p. de t., les symboles "TM" pour enregistrer, est mentionné dans le titre à la suite de Heme-Assist, sous-forme d'exposant. Bibliogr.: f. 104-110. Publ. aussi en version électronique.