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Lehmann, Markus. "Genetischer Zusammenhang von verbundenem Kauf- und Darlehensgeschäft des [Para] 9 Abs. 1 S. 1, S. 2 Verbraucherkreditgesetz." [S.l. : s.n.], 1996. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB5521645.
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Heuzé, Jean. "Collisions ionisantes du système He (2¹S, 2³S) + He(1¹S) en présence d’un champ électromagnétique intense." Paris 11, 1985. http://www.theses.fr/1985PA112078.
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Cette thèse s’inscrit dans l’étude des collisions inélastiques de deux atomes en présence d’un champ électromagnétique intense. Le mécanisme étudié est l’absorption d’un photon par la quasi-molécule formée au cours de la collision qui est assistée par le laser. Dans ce cas, aucun des deux partenaires ne peut absorber le rayonnement et le laser est indispensable pour obtenir le processus inélastique observé. L’étude est réalisée dans le système He(2¹S, 2³S) + He(1¹S) ; l’état final étant un état du continuum de He⁺+e⁻. Le dispositif expérimental comprend un faisceau d’atomes métastables de quelques dizaines d’électron-volts en collision avec une cible d’atomes dans l’état fondamental. Le flux laser est de l’ordre de 10⁷ W/cm². Au cours de la collision, un photon d’énergie 3,49 eV (355 nm) assiste la réaction, créant un point de croisement entre les courbes de potentiel moléculaire He₂* et He₂⁺ ; il en résulte une section efficace de production de l’ion He⁺+. Le signal ionique obtenu a été étudié en fonction du temps d’interaction, pour des énergies de collision de l’ordre de 50 eV dans le centre de masse. L’ordre de grandeur de la section efficace d’ionisation assistée a été déduit à partir du signal ionique bien connu, obtenu hors laser sur ce système. Les valeurs expérimentales sont comparées aux prévisions théoriques issues d’un modèle simple.
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O'Keefe, Christine M. "Concerning t-spreads of PG ((s + 1) (t + 1)- 1, q)." Title page, contents and summary only, 1987. http://web4.library.adelaide.edu.au/theses/09PH/09pho41.pdf.
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Goebel, Anne Babette. "Der betriebsverfassungsrechtliche Durchführungsanspruch gem. 77 Abs. 1 S. 1 BetrVG /." Berlin : Duncker & Humblot, 2006. http://www.gbv.de/dms/spk/sbb/recht/toc/50792651X.pdf.
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Litterscheid, Bettina. "Das Bestimmungsrecht des Verletzten aus Art. 40 Abs. 1 S. 2 und S. 3 EGBGB /." [S.l. : s.n.], 2005. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014702808&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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FILHO, ROGERIO DO NASCIMENTO REBELLO. "OPTICAL DATA TRANSMISSION AT 50 GBIT/S AND SPECTRAL EFFICIENCY OF 1 BIT/S/HZ." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2013. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35340@1.
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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Neste trabalho realizamos uma prova da viabilidade de um sistema de comunicação óptica com capacidade de transmissão de 50 Gbit/s em uma largura de banda de 50 GHz utilizando o legado dos sistemas com taxas de 10 Gbit/s. Uma série de configurações experimentais foi testada em uma ordem de complexidade crescente para verificar separadamente as etapas e as técnicas aplicadas para o aumento da capacidade de transmissão de dados e a eficiência espectral. Em alguns casos, a curva característica resultante da configuração backto- back do analisador de taxa de erro de bit média foi utilizada como referência para comparação das configurações experimentais realizadas durante o trabalho.
In this work we perform a proof of feasibility of 50 Gbit/s transmission within a 50 GHz optical bandwidth exploring the 10 Gbit/s legacy. A series of experimental configurations were tested in an order of increasing complexity to verify separately the steps and applied techniques for increasing data transmission capacity and spectral efficiency. In some cases, the comparison of experimental configuration was made using the back-to-back configuration of the Bit Error Rate Tester.
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Prado, Gustavo de Lima. "Deformabilidade sobre S^1 a livre de ponto fixo para auto-aplicações de T-fibrados e Reidemeister sobre S^1." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/45/45131/tde-16022011-125114/.
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Classificação das auto-aplicações de fibrados, com fibra toro, que preservam fibra sobre o círculo, com a propriedade de poderem ser deformadas sobre o círculo a uma aplicação livre de ponto fixo. Ainda, investigamos a relação entre o número de Reidemeister sobre o círculo e a propriedade acimaClassification of all fiber-preserving self-maps of torus bundles over the circle by the property of being able to deform them over the circle into a fixed point free map by a fiberwise homotopy over the circle. We also investigate the relationship between Reidemeister number over the circle and the property above
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Vyboh, Kishanda. "Mapping HIV-1's evasion of host defense." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110455.
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The HIV-1 RNA genome encodes the main structural polyprotein Gag, Gag/Pol (structural proteins and enzymes), auxiliary (Vpr, Vpu, Vif) and regulatory proteins (Tat, Rev, Nef). The expression of the full complement of viral gene products enhances both the replication and the pathogenic potential of the virus. In our previous work we showed that HIV-1 expression prevented eIF2alpha-dependent stress granule (SG) assembly in cells. SGs are translationally silent sites of RNA triage and can be readily visualized in cells due to clustering of cytoplasmic RNA and the recruitment of multiple cytoplasmic proteins (e.g., TIA/R, G3BP and eIF3). In this work, we attempted to understand how HIV-1 blocks SG formation and defined the determinant in HIV-1 that mediates this. To initiate SG assembly, the drug Pateamine A was used. Pateamine A causes an activation of eIF4A, which will lead to a disassembly of the eIF4F complex and an arrest in translation all in an eIF2alpha-independent manner. To identify the responsible gene, proviral constructs with individually deleted auxiliary and regulatory viral genes were expressed in HeLa cells. Among the proviral deletion constructs tested, two were found to be unable to block SG assembly: pNLXX, and Rev-. Both of these constructs share one important similarity in that they all do not express the main structural protein Gag due either to the presence of premature stop codons (pNLXX) or the nuclear retention of the genomic RNA that encodes Gag (Rev-). To directly test the hypothesis that the Gag polyprotein alone blocks stress granule assembly, we transfected cells with various mammalian expression constructs of Gag. These all prevented SG assembly. We went on to further map the responsible domain of Gag to the N-terminus of the Capsid domain, specifically to two amino acids. In conclusion, HIV-1 Gag prevents SG assembly via the N-terminus of Capsid and may confer to the virus a replicative advantage during times of stress.Le génome du virus de l'immunodéficience humaine 1 (VIH-1) comprend les protéines structurales principales Gag, Gag/Pol (structurale et enzymatique), auxiliaires (Vpr, Vpu, Vif) et régulatrices (Tat, Rev, Nef). L'expression de toutes ces protéines virales augmente la réplication et le potentiel pathogène du virus. Nos résultats précédents montrent que l'assemblage des granules de stress par un processus dépendant de eIF2alpha peut être bloqué par l'expression des gènes du VIH-1. Les granules de stress sont des sites de triage d'ARN sans traduction et elles peuvent être visualisées grâce à l'accumulation d'ARN cytoplasmique et au recrutement de plusieurs protéines cytoplasmiques (TIA/R, G3BP and eIF3, par exemple). Les résultats présentés ici montrent comment le VIH-1 empêche la formation des granules de stress et caractérisent les facteurs impliqués dans ce processus. Pour provoquer la formation de granules de stress, le composé Pateamine A a été utilisé. Pateamine A cause l'activation de eIF4A, qui provoque la dissolution du complexe eIF4F et arrête la traduction par un processus indépendant de eIF2alpha. Pour identifier le gène du VIH qui empêche la formation de granules de stress, des constructions provirales individuellement déficientes dans un gène auxiliaire ou régulateur ont été exprimées dans des cellules HeLa. Parmi les constructions provirales testées, deux étaient incapables de prévenir la formation de granules de stress: pNLXX, et Rev-. Ces deux constructions ne peuvent pas exprimer la protéine structurale Gag, soit à cause de la présence de codons stop prématurés (pNL-XX), soit à cause de la rétention dans le noyau de l'ARN viral codant pour Gag (Rev-). Pour déterminer si la polyprotéine Gag est suffisante pour empêcher la formation de granules de stress, des cellules HeLa ont été transfectées avec plusieurs différents vecteurs exprimant Gag. Tous ont empêché la formation de granules de stress. De plus, nous avons déterminé que l'extrémité N-terminale du domaine de Capside de Gag est responsable de cette inhibition. En particulier, l'activité anti-granules de stresse réside dans deux acides aminés. Ainsi, la protéine Gag du VIH-1 empêche la formation de granules de stress via l'extrémité N-terminale de la Capside et pourrait donner au virus un avantage réplicatif dans des conditions de stress.
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SAIHI, INES. "Homologie elliptique et bordisme s [exposant] 1-equivariant." Paris 7, 1998. http://www.theses.fr/1998PA077143.
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Cette these comporte deux parties independantes. Dans la premiere partie, on construit une theorie homologique multiplicative connexe et entiere dont la localisation en 2 correspond a la theorie de kreck et stolz, et si on inverse 2 et un element convenable de degre non nul dans l'anneau des coefficients, on retrouve l'homologie elliptique periodique definie par landweber, ravenel et stong. La deuxieme partie est consacree a l'etude, sous l'angle du cobordisme, des actions du cercle sur les varietes munies de differentes structures telles que l'orientation et la structure spinorielle. Grace a diverses suites exactes, on peut se ramener a des actions ayant un certain type de tranche et une certaine structure sur la variete ou sur les tranches ; on determine alors les groupes de bordisme s#1-equivariant correspondant.
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Mehta, Viraf M. "Light U(1)s in heterotic string models." Thesis, University of Liverpool, 2013. http://livrepository.liverpool.ac.uk/14833/.
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We present the construction of heterotic string models built using the free fermionic formulation, and focus on how additional U(1)s may arise. We motivate an anomaly free combination, U(1)_\zeta, as a proton lifetime preserving symmetry external to a left--right symmetric gauge group. This same combination is found to nullify lepton number in U(1)_{B-L} to form a leptophobic combination, also in left--right symmetric models, which we compare to other leptophobic U(1) combinations constructed in the context of different gauge groups. We then accommodate U(1)_\zeta as a proton lifeguard symmetry in an effective field theory. We present a comparative study of how gauge coupling unification constraints may be satisfied when SO(10)xU(1)_\zeta\not\subset E_6 and when the U(1)_\zeta charges do have an E_6 embedding. We show that without such an embedding, current values of \sin^2\theta_W(M_Z) and \alpha_3(M_Z) rule these models out. We go on to discuss how viable string models with this property included may be constructed.
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Corbo, Elisabeth [Verfasser]. "Strafprozessuales Zeugnisverweigerungsrecht für Insolvenzverwalter? : Eine Untersuchung zum Kontext der § 97 Abs. 1 S. 3 InsO und § 53 Abs. 1 S. 1 StPO / Elisabeth Corbo." Frankfurt a.M. : Peter Lang GmbH, Internationaler Verlag der Wissenschaften, 2020. http://d-nb.info/1217974172/34.
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Alagra, Aziz. "Contribution à une étude des dysfonctionnements morphosyntaxiques en français chez un groupe d'enseignants et d'étudiants yéménites." Thesis, Cergy-Pontoise, 2014. http://www.theses.fr/2014CERG0695/document.
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Le français est la troisième langue enseignée au Yémen après l'arabe et l'anglais. Cette vitalité du français nécessite la création de supports didactiques, afin d'aider à son apprentissage. L'objet de la thèse est de mettre en évidence les zones du français, qui sont sources de difficultés pour les étudiants tant sur le plan de la morphologie que sur celui de la syntaxe, de les classer et de les décrire. L'étude des erreurs s'appuiera sur deux corpus de travaux écrits effectués, l'un par trente étudiants de quatrième année de licence du département de français de l'université de Dhamar, l'autre par quinze enseignants de lycée diplômés du même département. Cette étude a pour finalité d'initier une réflexion, au sein des départements de français des universités yéménites, sur les stratégies et les objectifs de l'enseignement du français en tant que langue, dans un milieu plurilingue non francophone. Elle vise également à offrir des ressources didactiques en matière d'étude de la langue aux enseignants, en tentant de mettant en évidence des prioritésFrench is the third language taught in Yemen after Arabic and English. This vitality of French requires the creation of didactic supports, in order to help in its learning. The purpose of the thesis is to highlight the areas of French, which are sources of difficulty for students, in terms of morphology and syntax, to classify and to describe them. The study of errors is based on two corpus of written work, one which has been done by thirty students in the fourth year of the license of the French Department of Thamar University, the other one by fifteen high school teachers, graduated in the same department. This study aims to introduce a reflection, in the French departments of the Yemenite universities, about strategies and objectives of the teaching of French as a language, in a non-French-speaking multilingual environment. It also aims to provide didactic resources for the study of the language to the teachers, trying to highlighting the priorities
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Seier, Jürgen [Verfasser]. "Das Rechtsmittel der sofortigen Beschwerde gegen strafprozessuale Nebenentscheidungen : (§§ 464 Abs. 3 S.1 StPO, 8 Abs. 3 S.1 StrEG). / Jürgen Seier." Berlin : Duncker & Humblot, 2021. http://d-nb.info/1237966426/34.
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Dimassi, Yassin. "Haftung nach 613a Abs. 1 S. 1 BGB bei Betriebsveräußerung im Insolvenzeröffnungsverfahren /." Aachen : Shaker, 2006. http://www.gbv.de/dms/spk/sbb/recht/toc/522187927.pdf.
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Matthews, Richard P. "Conformational analysis of diglycosyl disulphides containing ßS(1-1)S interglycosidic linkages." Master's thesis, University of Cape Town, 2007. http://hdl.handle.net/11427/6329.
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Includes bibliographical references.The conformation around the glycosidic linkage has been shown to be the single most important factor in determining the molecular shape of oligosaccharides. This property is of fundamental importance in influencing biological activity such as binding to enzymes or receptors. Therefore, knowledge of the conformational preference associated with glycosidic linkages is required. In this thesis the conformational preferences of the βS( 1-.1 ')8 glycosidic linkage within asymmetrical dissacharide mimetics have been studied using computational methods. The sulphur-sulphur torsion angle parameters contained in the CHARMM22 force field were refined based on density functional theory (OFT) calculations of dimethyl disulphide, which is a representative fragment containing the sulphur-sulphur torsion angle. The refined parameters were then used in molecular dynamics (MD) simulations of three disaccharide mimetics in vacuum, water and dimethyl sulphoxide (OM80). The resulting conformational analysis reveals that in the case of disaccharides containing unsubstituted glycosyl rings, good agreement with experimental nuclear overhauser effects (NOEs) and spin-spin coupling constants is obtained. However, for disaccharides containing substituted glycosyl rings poorer agreement with experimental data is obtained, which may suggest that further refinement of the force field is required. In addition, a natural bond orbital analysis was conducted on the 1, I' - disulphanediyl diethanol fragment to investigate the origin of the conformational preference for the +g and -g conformers of the sulphur-sulphur torsion angle. This phenomenon is shown to be as a result of a two-electron stabilising [no – σ*c-s] delocalisation from the lone pair of the oxygen atoms to the carbon-sulphur antibonding orbitals.
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LUU, DOAN-TRUNG. "Adhesion pollen-stigmate chez les brassicaceae : implication des genes s-locus glycoprotein et s-locus related 1." Lyon, École normale supérieure (sciences), 1997. http://www.theses.fr/1997ENSL0067.
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Chez les brassicaceae, le gene slr1 (s-locus-related) est fortement exprime dans les stigmates matures, de facon synchrone a celle de slg (s-locus-glycoprotein), gene participant a l'auto-incompatibilite. La forte conservation des sequences de slr1 parmi toutes les brassicaceae, opposee au polymorphisme des sequences de slg, a suggere que slr1 soit implique dans un controle polygenique de la pollinisation aussi bien interspecifique qu'intraspecifique chez les gymnospermes et les angiospermes. Nous avons montre une relation significative entre l'expression du gene slr1 et le phenotype d'adhesion du pollen sur le stigmate, dans les croisements reciproques realises entre une dizaine d'especes ou de lignees de brassicaceae. Nous avons mis au point un test biomecanique de l'adhesion par une mesure directe des forces necessaires pour arracher les grains de pollen lies aux stigmates et utilise ce test pour dissequer l'adhesion dans les croisements intraspecifiques et interspecifiques. Nous avons ainsi montre le role de la pellicule stigmatique (couche essentiellement composee de proteines en surface du stigmate) et celui des lipides de la surface pollinique. Ces resultats mesurent la participation des composes stigmatiques et polliniques a la formation d'un menisque qui assure l'adhesion pollen-stigmate. Nous avons confirme que les proteines slr1, mais aussi slg, ont un role dans l'adhesion pollen-stigmate : (i) en mesurant la force d'adhesion chez les colzas transgeniques qui produisent peu ou pas de proteines slr1, en traitant les stigmates de plantes sauvages (ii) par des serums anti-slr1 et anti-slg ou (iii) par des proteines d'origine pollinique qui masquent les sites slr1 et slg. L'adhesion chez des stigmates ainsi traites est significativement reduite. Enfin, nous avons decrit la diversite moleculaire des genes slg et slr1 chez differentes especes et populations de brassicaceae.
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Saint-Martin, Claire de. "Que disent les élèves de CLIS 1 de leur(s) places(s) dans l'école ? Un empan liminal." Thesis, Cergy-Pontoise, 2014. http://www.theses.fr/2014CERG0702/document.
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Au sein de l'école élémentaire, les CLIS 1 sont des classes spécialisées qui accueillent des élèves porteurs de troubles des fonctions cognitives. Ces élèves doivent connaître des temps d'inclusion en classe ordinaire, alors nommée « classe d'inclusion ». Ma thèse s'intéresse à ce que disent les élèves de CLIS 1 de leur(s) place(s) dans l'école, à partir du concept de liminalité, tel qu'il a été défini par Murphy. Il Je postule que la CLIS est un lieu de la liminalité, permettant aux élèves de rester dans l'école sans les y inclure totalement.Je questionne la situation liminale des élèves de CLIS 1 par la dialectisation du statut, de la situation et de la place de la personne handicapée, dans une double perspective socio-historique et socio-clinique. La CLIS 1 peut être pensée comme un espace liminal, au regard de la définition du handicap mental et de ses différentes dénominations, de la perspective historique de la scolarisation des enfants en situation de handicap et de la politique actuelle qui revendique une volonté inclusive. A l'appui des cadres méthodologiques de l'analyse institutionnelle et de la sociologie de l'enfance, j'ai élaboré un dispositif de socio-clinique institutionnelle pour mener une réflexion collective avec les élèves de trois CLIS 1. Il ne s'agissait pas rechercher une adéquation des discours des élèves à la réalité observable, mais de confronter leurs représentations aux observations faites, de façon à analyser leur(s) place(s) au sein de l'institution scolaire.Mes données me conduisent à enrichir le cadre théorique initial. La liminalité des élèves de CLIS1 est une liminalité plurielle, qui dépend de facteurs sociaux, culturels, environnementaux, institutionnels, mais aussi individuels. La recherche a mis à jour le concept d'empan liminal, à savoir un processus dynamique qui se décline différentes situations liminales selon les temps d'inclusion en classe ordinaire de chaque élève. Mon travail empirique d'une part et théorique d'autre part me conduit à interroger les modalités de la mise en œuvre de la politique d'inclusion au sein de l'école élémentaireWithin the French primary school, CLIS 1 are specialised classes which accept children with cognitive disabilities. These children should partake in inclusion times in regular classes, called "inclusion classes". My thesis focuses on what CLIS 1 students say about their place(s) in the school, from the perspective of liminality, as defined by Murphy. I suggest that the CLIS is a place of liminality, allowing children to stay at school without their total inclusion.I question the liminal status of students in CLIS 1, by discussing the situation and place of disabled children, from both socio-historical and socio-clinical perspectives. The CLIS 1 can be thought of as a liminal space, regarding the definition of mental disability and its various denominations, from the historical perspective of the education of disabled children and from the current policy which claims inclusive desire. In support of the methodological frameworks of institutional analysis and the sociology of childhood, I developed a socio-clinical institutional device to guide a collective reflection with the children of three CLIS 1. It did not seek to match children's reflections to observable reality, The aim was not to compare exactly what the children said to observable reality, but to express to the children the contradictions between what they say and my observations, to analyse their place in the school.My data lead me to enrich the initial theoretical framework. The liminality of the children in CLIS 1 is a plural liminality, which depends on social, cultural, environmental, institutional, as well as individual factors. The research has updated the concept of liminal span, which is a dynamic process that weakens different liminal situations according to the inclusion time in regular classes of each child. My empirical work as well as my theoretical work, has led me to question the methods of the implementation of the inclusion policy in primary school
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Passos, Rafael Hernandez Damascena dos. "S?ntese e caracteriza??o de p?s Ba(x)Sr(1-x)Co0,8Fe0,2O3- atrav?s do m?todo de coprecipita??o via oxalato." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18557.
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Previous issue date: 2012-12-27Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico
Ceramic powders based on oxides of perovskite-type structure is of fundamental interest nowadays, since they have important ionic-electronic conductivity in the use of materials with technological applications such as gas sensors, oxygen permeation membranes, catalysts and electrolytes for solid oxide fuel cells (SOFC). The main objective of the project is to develop nanostructured ceramic compounds quaternary-based oxide Barium (Br), Strontium (Sr), Cobalt (Co) and Iron (Fe). In this project were synthesized compounds BaxSr(1-x)Co0, 8Fe0,2O3- (x = 0.2, 0.5 and 0.8) through the oxalate co-precipitation method. The synthesized powders were characterized by thermogravimetric analysis and differential thermal analysis (TGADTA), X-ray diffraction (XRD) with the Rietveld refinement using the software MAUD and scanning electron microscopy (SEM). The results showed that the synthesis technique used was suitable for production of nanostructured ceramic solid solutions. The powders obtained had a crystalline phase with perovskite-type structure. The TGA-DTA results showed that the homogeneous phase of interest was obtained temperature above 1034?C. It was also observed that the heating rate of the calcination process did not affect the elimination of impurities present in the ceramic powder. The variation in the addition of barium dopant promoted changes in the average crystallite size in the nanometer range, the composition being BSCF(5582) obtained the lowest value (179.0nm). The results obtained by oxalate co-precipitation method were compared with those synthesis methods in solid state and EDTA-citrate method
P?s cer?micos ? base de ?xidos de estrutura do tipo perovsquita ? de fundamental interesse atualmente, pois apresentam condutividade i?nica e eletr?nica importante na utiliza??o de materiais com aplica??es tecnol?gicas como: sensores de gases, membranas perme?veis ao oxig?nio, catalisadores e eletr?lito para c?lulas a combust?vel de ?xido s?lido . O objetivo principal dessa pesquisa ? desenvolver compostos cer?micos quarten?rios nanoestruturados ? base de ?xidos de B?rio (Br), Estr?ncio (Sr), Cobalto (Co) e Ferro (Fe). Nesse trabalho foram sintetizados compostos de BaxSr(1-x)Co0,8Fe0,2O3-(x = 0,2, 0,5 e 0,8) atrav?s do m?todo de coprecipita??o via oxalato. Os p?s sintetizados foram caracterizados por an?lise termogravim?trica e termodiferencial (TGA-TDA), difra??o de raios X (DRX) com refinamento pelo m?todo de Rietveld atrav?s do software MAUD e microscopia eletr?nica de varredura (MEV). Os resultados obtidos mostraram que a t?cnica de s?ntese utilizada foi satisfat?rio para produ??o de solu??es s?lidas cer?micas nanoestruturadas. Os p?s obtidos apresentaram uma fase cristalina com estrutura do tipo perovsquita. O resultado de TGA-DTA apresentou que a fase homog?nea de interesse foi obtida a temperatura acima de 1034?C. Foi observado tamb?m que a taxa de aquecimento do processo de calcina??o n?o interferiu na elimina??o das impurezas presentes no p? cer?mico. A varia??o na adi??o do dopante b?rio promoveu altera??es no tamanho m?dio de cristalito em escala nanom?trica, sendo a composi??o BSCF(5582) obtido o menor valor (179,0nm). Os resultados obtidos pelo m?todo de coprecipita??o foram comparados com os m?todos de s?ntese em estado s?lido e complexa??o EDTA-citrato
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Pereira, Rodrigo Gonçalves. "Dynamical correlations of S=1/2 quantum spin chains." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/939.
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Spin-1/2 chains demonstrate some of the striking effects of interactions and quantum fluctuations in one-dimensional systems. The XXZ model has been used to study the unusual properties of anisotropic spin chains in an external magnetic field. The zero temperature phase diagram for this model exhibits a critical or quasi-long-range-ordered phase which is a realization of a Luttinger liquid. While many static properties of spin-1/2 chains have been explained by combinations of analytical techniques such as bosonization and Bethe ansatz, the standard approach fails in the calculation of some time-dependent correlation functions. I present a study of the longitudinal dynamical structure factor for the XXZ model in the critical regime. I show that an approximation for the line shape of the dynamical structure factor in the limit of small momentum transfer can be obtained by going beyond the Luttinger model and treating irrelevant operators associated with band curvature effects. This approach is able to describe the width of the on-shell peak and the high-frequency tail at finite magnetic field. Integrability is shown to affect the low-energy effective model at zero field, with consequences for the line shape. The power-law singularities at the thresholds of the particle-hole continuum are investigated using an analogy with the X-ray edge problem. Using methods of Bethe ansatz and conformal field theory, I compute the exact exponents for the edge singularities of the dynamical structure factor. The same methods are used to study the long-time asymptotic behavior of the spin self-correlation function, which is shown to be dominated by a high-energy excitation.
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Sobiella, Constantin. "Tieftemperatureigenschaften einer dotierten Spin S = 1 Kette integrables Modell /." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964253119.
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Pestour, Michel. "Valeurs en s=1 de fonctions L de Dirichlet." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10093.
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Soit k un corps de nombres totalement reel de degre d et k une extension abelienne de k de degre n. Un caractere du groupe de galois gal(k/k) induit un caractere #x sur le groupe des ideaux fractionnaires de k qui sont premiers avec la partie finie c du conducteur de k. Ce travail consiste a donner une expression generale de la valeur en s = 1 de la fonction l attachee au caractere #x, le calcul reposant sur une variante explicite de la decomposition de shintani, variante decrite par colmez en 1988. On s'interesse ensuite plus particulierement au cas ou k est un corps quadratique reel. On obtient alors deux expressions de l(1,#x) presentant certaines analogies, l'une avec un travail realise par novikov en 1980, l'autre avec un resultat obtenu par zagier en 1975
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Fukazawa, Hideto. "Magnetic ground state of "S=1/2" pyrochlore oxides." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/149045.
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Ray, Kallol. "Do S,S'-coordinated o-dithiobenzosemiquinonate(1-) radicals exist in coordination compounds? a combined experimental and computational study /." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=97601923X.
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Jodamus, Johnathan. "An investigation into the construction(s) and representation(s) of masculinity(ies) and femininity(ies) in 1 Corinthians." Doctoral thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/20265.
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With the use of SRI as an interpretive analytics combined with a gender-critical hermeneutical optic I have traced out some of the ways in which gender is constituted and performed in the discourse of 1 Corinthians. I demonstrate that normative and normalising engendering is operative in the text and that the discourse replicates hegemonic gendered structurings and machinations from the broader social and cultural environment of that milieu. As a result Christian bodies are scripted to perform according to the dominant cultural protocols and engendering praxes. Because Paul is structured by and functions within the larger discourses of the ancient Mediterranean sex and gender system(s), one cannot comprehend the gendered rhetoric of 1 Corinthians without recourse to its interconnections with ancient gender discourses in general. Furthermore, when Paul is engaged in persuasion through the discourse of 1 Corinthians, gender construction(s) and representation(s), because of the nature of gender in the ancient world, is precisely what is at stake. It seems evident that the discourse of 1 Corinthians tendentiously served to maintain and sustain hierarchical gendered relationships between men and women in the church at Corinth that mimicked the normative, androcentric, and kyriarchal power relations from the dominant Graeco-Roman culture. These power dynamics continue to have an effect on many churches today because they understand Scripture to be regulative for Christian practice in our contemporary society in spite of the temporal and cultural separation of our world from that of the world of the New Testament. As a result contemporary churches reproduce gendered power relations that have been established in habitus which in turn enables replicated gendered structurings in society. In this regard the rhetoric of 1 Corinthians may be viewed as a text that functions as discourse in the making and sustaining of gendered and ideological normativities that continue to structure gendered bodies and bodiliness. It should be kept in mind that the structuredness of habitus came into being as the product of reiteration and sedimenting, and its dismantling similarly will come about as a result of reiteration.
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Goebel, Anne Babette [Verfasser]. "Der betriebsverfassungsrechtliche Durchführungsanspruch gem. § 77 Abs. 1 S. 1 BetrVG. / Anne Babette Goebel." Berlin : Duncker & Humblot, 2011. http://d-nb.info/1238348106/34.
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Orduz, Barrera Juan Camilo. "Induced Dirac-Schrödinger operators on $S^1$-semi-free quotients." Doctoral thesis, Humboldt-Universität zu Berlin, 2017. http://dx.doi.org/10.18452/18565.
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John Lott berechnete eine Signatur mit ganzzahligen Werten für den Orbitraum einer kompakten, orientierbaren (4k + 1)-Mannigfaltigkeit mit einer halbfreien S1-Wirkung. Diese Signatur ist eine Homotopieinvariante für den Orbitraum. Allerdings konstruierte er keinen Operator vom Dirac-Typ, der die Signatur als Index besitzt. In dieser Arbeit konstruieren wir einen solchen Operator auf dem Orbitraum der S1-Wirkung, einem Thom-Mather stratifizierten Raum mit einem singulären Stratum von positiver Dimension, und wir zeigen, dass der Operator im wesentlichen eindeutig bestimmt ist. Ferner zeigen wir, dass sein Index mit Lotts Signatur übereinstimmt, zumindest wenn der stratifizierte Raum die sogenannte Witt-Bedingung erfüllt. Wirnennendiesen Operator den induzierten Dirac-Schrödinger Operator. Unsere Konstruktionsstrategie ist es, einen geeigneten S1-invarianten transversal elliptischen Operator erster Ordnung auf den S1-invarianten Differentialformen zu definieren, der den gesuchten Operator auf den Differentialformen des Orbitraums induziert.
Die Witt-Bedingung, eine topologische Bedingung, welche in diesem Fall von der Kodimension der betrachteten Punktmenge abhängt, lässt verschiedene analytische Schlussfolgerungen zu. Insbesondere ist, wenn die Bedingung nicht erfüllt ist, der Hodge-de Rham Operator auf dem Quotientenraum nicht notwendigerweise essentiell selbstadjungiert und die Wahl einer Randbedingung ist daher notwendig. Diese Wahlfreiheit erscheint unnatürlich in Anbetracht der Tatsache, dass Lotts Signatur unabhängig von der Witt-Bedingung wohldefiniert ist.
Der Dirac-Schrödinger Operator, der in dieser Arbeit konstruiert wird, unterschei- det sich vom Hodge-de Rham Operator durch einen Term nullter Ordnung, welcher sicherstellt, dass der Operator wesentlich selbstadjungiert ist. Außerdem antikommutiert dieser Term nullter Ordnung mit der Signatur-Involution, wodurch der gesamte Operator zerfällt und so der Index berechnet werden kann, auch wenn die Witt-Bedingung nicht erfüllt ist.John Lott has computed an integer-valued signature for the orbit space of a compact orientable (4k + 1) manifold with a semi-free S1-action, which is a homotopy invariant of that space, but he did not construct a Dirac type operator which has this signature as its index. In this Thesis, we construct such operator on the orbit space, a Thom-Mather stratified space with one singular stratum of positive dimension, and we show that it is essentially unique and that its index coincides with Lott’s signature, at least when the stratified space satisfies the so called Witt condition. We call this operator the induced Dirac-Schrödinger operator. The strategy of the construction is to “push down” an appropriate S1-invariant first order transversally elliptic operator to the quotient space. The Witt condition, a topological condition which in this case depends on the codi- mension of the fixed point set, has various analytic consequences. In particular, when not satisfied, the Hodge-de Rham operator on the quotient space does not need to be essentially self-adjoint and therefore a choice of boundary conditions is required. This choice freedom is not natural in view of the fact that Lott’s signature is well defined independently of the Witt condition. The Dirac-Schrödinger operator constructed in this Thesis differs from the Hodge-de Rham operator by a zero order term which ensures it to be essentially self-adjoint. Moreover, this zero order term anti-commutes with the chirality involution allowing the whole operator to split so that the index can be computed even if the Witt condition is not satisfied.
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RAIH, MOHAMMED. "Etude structurale d'alliages bismuth-etain refroidis a 5000k. S**(-1)." Clermont-Ferrand 2, 1989. http://www.theses.fr/1989CLF2S909.
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Etude par diffraction rx de la structure et de la microstructure des particules de poudres de l'eutectique etain-bismuth refroidies rapidement, sensiblement spheriques et de tailles comprises entre 5 et 200 micrometres
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Romero, Martínez José Oscar. "Estudio de la clase de matrices {K,s+1}-potentes." Doctoral thesis, Universitat Politècnica de València, 2012. http://hdl.handle.net/10251/15974.
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En esta tesis doctoral se han introducido y analizado de manera exhaustiva una nueva clase de matrices denominada matrices {K,s+1}-potentes. Estas matrices contienen como casos particulares las matrices {s+1}-potentes, periódicas, centrosimétricas, mirrorsimétricas, circulantes, etc. Estos últimos tipos de matrices son de gran utilidad en diferentes áreas tales como transmisión de líneas multiconductor, antenas, ondas, sistemas eléctricos y mecánicos, y teoría de la comunicación, entre otros. En el capítulo 1 se han presentado algunos resultados básicos. En el capítulo 2 se han obtenido diferentes propiedades de las matrices {K,s+1}-potentes relacionadas con la suma, el producto, la inversa, la adjunta, la semejanza y la suma directa. Posteriormente, se han encontrado caracterizaciones de las matrices {K,s+1}-potentes desde distintos puntos de vista: usando teoría espectral, mediante potencias de matrices, a partir de inversas generalizadas, y mediante una representación por bloques de una matriz de índice 1. Luego, en el capítulo 3, se ha relacionado la clase de matrices introducida con diferentes clases de matrices complejas conocidas en la literatura, a saber: matrices {K}-hermíticas, proyectores {s+1}-generalizados, matrices unitarias, matrices normales, centrosimétricas {K}-generalizadas, etc. Con la intención de construir de manera efectiva matrices de esta clase, en el capítulo 4 se han diseñado algoritmos tanto en el caso s mayor o igual a 1 y el caso s=0. Primero se construyen matrices en esta clase a partir de información espectral de la matriz involutiva K. Utilizando este algoritmo se pueden construir más ejemplos. Concretamente, se hallan matrices {K,s+1}-potentes que conmutan con las encontradas anteriormente, y mediante estos dos algoritmos, se puede realizar el análisis de combinaciones lineales de matrices de este tipo. Por otra parte, para los casos s mayor o igual a 1 y s=0 se ha resuelto el problema inverso de calcular las matrices involutivas K que satisfacen la ecuación matricial que se está tratando. También en este caso se han presentado métodos numéricos que lo resuelven. Por último, en este capítulo se incluyen ejemplos numéricos para mostrar las prestaciones de los métodos desarrollados. En el capítulo 5, se extiende el estudio anterior al caso de matrices {K,-(s+1)}-potentes, completando así todos los valores de s enteros posibles. Especial énfasis se ha puesto en el análisis espectral de estas clases de matrices. La tesis finaliza con un anexo en el que se indican las conclusiones finales y las líneas futuras.Romero Martínez, JO. (2012). Estudio de la clase de matrices {K,s+1}-potentes [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/15974
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PAYEN, CHRISTOPHE. "Comportements de la chaine antiferromagnetique : etude du systeme agcrp#2s#6(s=1)-agcrp#2s#6(s)3/2)." Nantes, 1992. http://www.theses.fr/1992NANT2011.
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Les composes a chaines antiferromagnetiques quasi-isotropes agvp#2s#6(s=1) et agcrp#2s#6(s=3/2) ont ete caracterises du point de vue magnetique. Les resultats ont ete analyses en relation avec la conjecture de haldane qui introduit une distinction entre le comportement des chaines a spins entiers et celui des chaines a spins demi-entiers. Pour le compose a chaines de cr(iii)(s=3/2), la formation d'un ordre magnetique a longue distance a ete observee pour des temperatures inferieures a 20 k. Le comportement de la susceptibilite magnetique a ete caracterise et analyse aussi bien dans la phase paramagnetique que dans la phase ordonnee. Pour le compose a spins entiers (agvp#2s#6), le comportement thermique de la susceptibilite a ete analyse en relation avec la presence d'un gap quantique. Aucun signe attribuable a des correlations statiques de spins a longue distance, n'est observe pour des temperatures superieures a 2k. Les spectres de diffusion inelastique de neutrons, obtenus aux instruments in4 (ill) et het (ral-uk) a des temperatures tres faibles par rapport au parametre d'echange, prouvent l'existence d'un gap quantique (eg=26 mev) en limite de zone de brillouin (point af). La deuxieme singularite (c=15010 mev), marquant l'extremite du spectre d'excitation, a egalement ete observee. Les correlations dynamiques de spins pointent, comme attendu, en limite de zone de brillouin, mais leur intensite est affectee par le caractere desordonnee marque de l'etat fondamental que nous avons pu estimer (longueur de correlation tres courte egale a 5-6 distances interspin). L'ensemble de ces resultats est en accord quantitatif avec les nombreux travaux theoriques et numeriques realises ces dernieres annees sur la chaine antiferromagnetique
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Dimassi, Yassin [Verfasser]. "Haftung nach § 613a Abs. 1 S. 1 BGB bei Betriebsveräußerung im Insolvenzeröffnungsverfahren / Yassin Dimassi." Aachen : Shaker, 2006. http://d-nb.info/1166514102/34.
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Zhu, Hongyan. "Deep breath and relax: a study of NPS/NPSR1." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1298324376.
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De, Ramón Bignon José Francisco. "Estudio geológico y análisis estructural a escala 1:25.000 del área Sierra Palmira, región de Atacama (27.92°S-28.05°S)." Tesis, Universidad de Chile, 2015. http://repositorio.uchile.cl/handle/2250/137861.
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GeólogoLa geología de la zona cordillerana de la 3ra Región de Atacama en el norte de Chile ha sido ampliamente estudiada y documentada por una multitud de autores permitiendo un buen entendimiento de la evolución estratigráfica y tectónica de esta zona del país, en gran parte gracias a la excelente preservación y exposición de los rasgos estratigráficos y estructurales que se han conservado y expuesto dado el particular clima que impera desde hace varios millones de años. Sin embargo, existen aún muchas inconsistencias y dudas respecto a algunas definiciones estratigráficas y temporalidades de eventos geológicos, de lo cual nace una necesidad de ahondar aún más en los estudios, aprovechando ciertas zonas de ejemplar y única exposición, que conservan registros privilegiados de la historia geológica de la parte norte del país. En virtud de lo anterior surge este estudio cuyo fin es aportar mediante un mapeo de detalle a escala 1:25.000 y un análisis de los rasgos estructurales, a una mayor comprensión de la evolución geológica del norte de Chile. El trabajo se centró en la Formación Hornitos, ubicada directamente al este de la falla Elisa de Bordos, con particular énfasis en las estructuras de carácter inverso y de rumbo sinestral observadas en la zona. La descripción detallada de la secuencia estratigráfica de la Formación Hornitos ubicada al noreste de Vallenar, arroja nuevas luces sobre las relaciones entre formaciones y definiciones estratigráficas de las secuencias del Cretácico Superior, ayudando a su vez a dilucidar, con apoyo de los datos geocronológicos existentes, a una mejor acotación del rango de edades en las que se depositó la secuencia. Por otra parte, el análisis detallado de las estructuras presentes aporta información interesante sobre los diferentes eventos tectónicos y regímenes de esfuerzo que operaron durante y posteriormente a la deposición de la secuencia estratificada, tectónica que estará dominada por un régimen transpresivo a nivel regional que se verá reflejado tanto a escala local como regional, con presencia importante de eventos compresivos asociados a una zona de transferencia condicionada por la geometría a gran escala de la falla Elisa de Bordos. Estas estructuras tienen una geometría consecuente con la morfología de las fallas mayores y con los patrones de rotación identificados mediante estudios paleomagnéticos.
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Pioui, Rachid. "Mesures de Haar p-adiques et interprétation arithmétique de 1/2 L2(x,s)-1/2 L2(x,t),s,t [appartenant à] Z2 (x quadratique)." Besançon, 1990. http://www.theses.fr/1990BESA2016.
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Etant donné un caractère quadratique pair X , nous avons étudié, en fonction de l'ensemble S0 des nombres premiers impairs divisant le conducteur de X , les divisibilités et module de continuité de la fonction L2-adique associée au caractère. La méthode utilisée est basée sur une décomposition de la pseudo-mesure de Deligne-Ribet associée à la construction des fonctions L2. Ainsi, nous avons obtenu des congruences générales entre nombres de classes des corps quadratiques et des congruences entre nombre de classes et nombre d'éléments de noyaux modères du K2. La méthode consiste à calculer, modulo 2, des déterminants de matrices a coefficients dans f#2. Cette étude généralise et englobe les congruences données par A. Costa, M. Hikita, P. Kaplan, K. S. WiIliams, H. Lang et R. Schertz, et J. Urbanowicz
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Vollaard, Inken-Kareen. "The supersingular locus of the Shimura variety of GU (1, s)." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=976736950.
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Schulenburg, Jörg. "Einfluss der Gitterstruktur auf den Grundzustand von s=1/2-Quantenspinsystemen." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=967430151.
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Sultana, Nasra. "Search for light Higgs in radiative decays of Upsilon(1 S)." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2008. http://wwwlib.umi.com/cr/syr/main.
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da, Silva Araújo Costa Lidiane. "Comportamento crítico de filmes Ising S=1 em estruturas cúbicas simples." Universidade Federal de Pernambuco, 2008. https://repositorio.ufpe.br/handle/123456789/6325.
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Usamos simulações Monte Carlo e teoria de escala de tamanho finito para estudar o comportamento magnético de filmes finos, em função da espessura LZ dos filmes. Consideramos sistemas de spin S = 1, com interações entre primeiros vizinhos em estruturas cúbicas simples na geometria de filmes, L×L×LZ, com condições de contorno periódicas ao longo do plano do filme e abertas na direção perpendicular ao filme. Obtivemos a energia, a magnetização, a susceptibilidade e o calor específico em função da temperatura, para diversos valores de L e espessura LZ no intervalo [1 : 20]. Para estudar o comportamento do sistema na região crítica, são geradas longas séries de dados para um conjunto de valores da temperatura e, através da técnica de histogramas múltiplos, são obtidas as grandezas relevantes em uma faixa contíua de temperaturas. Em particular obtivemos a dependência da temperatura crítica TC(LZ) e dos expoentes críticos, com a espessura do filme. Concluímos que TC(LZ) se aproxima do valor da temperatura crítica do sistema volumétrico (3D), segundo uma lei de potência com expoente l = 1.40(3). Quanto aos expoentes críticos b , g e n não observamos o crossover de 2D para 3D, e os valores obtidos são compatíveis com os expoentes exatos do sistema bidimensional (2D)
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Terme, Thierry. "Synthèse par méthodologie S RN 1 de nouvelles quinones d'intérêt biologique." Aix-Marseille 3, 2000. http://www.theses.fr/2000AIX30041.
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Ce travail est consacre a la synthese par reactions de transfert monoelectronique de nouveaux agents pharmacologiques quinoniques. La premiere partie decrit la synthese d'agents alkylants quinoniques et l'etude de leur reactivite dans des reactions de c-alkylation avec l'anion du 2-nitropropane. Une etude mecanistique complete a permis de definir un mecanisme radicalaire en chaine bis-s r n1 en series benzo-, naphto- et anthraquinone et tetrakis-s r n1 en serie benzoquinone. L'extension a divers anions nitronates secondaires aliphatiques, cycliques et heterocycliques a donne a ces reactions un caractere general. La seconde partie est consacree a la reactivite de ces agents alkylants avec des nitroalcanes primaires conduisant a une nouvelle methode d'annellation. Cette methode permet la synthese de nouvelles dialkylquinones (naphtoquinones, anthraquinones, naphtacenediones) a partir de bis(chloromethyl)quinones possedant un cycle aromatique de moins. De plus, une nouvelle synthese de tetraalkylanthraquinones est decrite, par reaction de bis-annellation, a partir de la tetrakis(chloromethyl)benzoquinone. Enfin, dans la derniere partie, la reactivite originale d'un agent alkylant derive de la 2-methyl-1,4-naphtoquinone avec des nitroalcanes primaires est presentee. Celle-ci conduit aux produits de c-alkylation attendus ainsi qu'a des dialkylanthraquinones. Une etude de reactivite intramoleculaire de chloromethyl nitroalcanes quinoniques, prepares a partir des produits de c-alkylation precedents, cloture ce travail.
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Hevert, Caroline. "Das private Festnahmerecht nach 127 Abs. 1 S. 1 StPO und seine Bedeutung als Rechtfertigungsgrund /." Aachen : Shaker, 2005. http://www.gbv.de/dms/ilmenau/toc/499543483hever.PDF.
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Anders, Ines. "Die Geschäftsordnung der Hauptversammlung gemäß [Para] 129 Abs. 1 S. 1 AktG : Chancen statt Risiken? /." [S.l. : s.n.], 2003. http://swbplus.bsz-bw.de/bsz114987793inh.htm.
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Píšová, Vendula. "Matice s prvky -1, 1, 0." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-404214.
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In this thesis we introduce selected classes of matrices, whose entries are only numbers −1, 1, 0. We combine existing results from various fields of Mathematics and enrich them with specific examples and explanations, with the aim of making the understanding of the text easier. Thanks to that, the reader can comprehend the theory and look under the hood of non-trivial applications. We will start with introducing adjacency matrices and covering of complete graphs with complete bipartite graphs. Then we follow with Hadamard matrices and will show the conditions for their constructions. Incidence matrices of the set systems will help us solve the combinatorial problem of the Odd-town clubs. Finally, we will prove the Cayley formula about the spanning trees of the complete graph, using incidence matrices.
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Badalíková, Michaela. "Společnost s ručením omezeným po 1. 1. 2014." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-191346.
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This diploma thesis deals with new legislation of limited liability company from January 2014. At this diploma thesis is made comparison antecedent legislation and actual legislation of limited liability company, next comparison of conduct business of natural person and limited liability company and next comparison of establishment of limited liability company at Czech Republic and in the selected countries of the world.
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Belkale, Prakash. "Local systems on P{superscript 1} -S for S a finite set /." 1999. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:9934025.
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Wang, Chau-Chung, and 王朝中. "the synthesis of N-(1-S-ethoxycarbonyl-3-oxo-3-phenyl)-S- alaninebenzylester." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/44475814461998076948.
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碩士國立清華大學
化學工程學系
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Enalapril是目前最受歡迎的抗高血壓藥物,其專利將於1998或2000年到 期,由於enalapril具有優越的療效,近年來其市場急遽擴大,使enalapril 的合成及製程研究極具價值.本研究的合成方式是先以benzyl alcohol進 行酯化反應以作為L-alanine上的酸基的保護基,酯化反應得到的產物上的 一級胺基可以在三乙基胺的催化下對trans-ethyl-4-oxo-4-phenyl-2- butenoate上的雙鍵進行加成反應(Michael addition).反應完成後,直接 在乙醇中進行結晶,得到 N-(1-S-ethoxycarbonyl-3-oxo-3-phenyl)-S- alaninebenzylester白色粉末.經由液相層析發現結晶後的濾液中含有大 量的N-(1-R-ethoxycarbonyl-3-oxo-3-phenyl)-S-alaninebenzylester, 將此乙醇溶液在三乙基胺的催化下,進行 keto-enol tautomerizationreaction,如此即可將部份的N-(1-R-ethoxycarbonyl-3- oxo-3-phenyl)-S-alaninebenzylester反應成N-(1-S-ethoxycarbonyl-3- oxo-3-phenyl)-S-alaninebenzylester,而後經過同樣的結晶程序後,即可 再度收出N-(1-S-ethoxycarbonyl-3-oxo-3-phenyl)-S- alaninebenzylester.研究過程中發現,酯化反應所需要的催化劑以SOCl2 為最佳,不但能夠維持高產率,反應完成後更可以與酯化產物形成結晶鹽 類,使純化成為可能.加成反應在適當條件之下,可以偏向N-(1-S- ethoxycarbonyl-3-oxo-3-phenyl)-S-alaninebenzylester.
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Lee, Jiunn-Horng, and 李駿宏. "An Approach for Two-Echelon (S-1,S) Inventory System with Lateral Resupply." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/78198065877882066471.
Full textAbstract:
碩士國立交通大學
工業工程與管理系
87
The problem we address is to determine safety stocks in a two-echelon (S-1,S) inventory system with lateral resupply. In this system we assume that demands are Poisson process and the distributions of resupply time are arbitrary. There are two parts of service levels are considered. One is the satisfied rate that a demand of customer is met immediately by stock on hand. The other is the probability that a demand is met by lateral resupply from other retailers. In this system we develop an approach to determine the stock levels regarding the objectives of holding, shortages and lateral resupply costs and service levels restrictions. The proposed approach is developed by comparing stock allocations among three types of two-echelon(S-1,S) inventory system. One is that lateral resupply is prohibited. The others are free lateral resupply and restricted lateral resupply. Then we can determine the searching space for the optimal stock levels of two-echelon(S-1,S) inventory system with lateral resupply. Finally, an example is given to illustrate the procedure of the algorithm.
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Machado, Eduardo Manuel da Silva. "Modem acústico subaquático a 1 Mbit/s." Master's thesis, 2016. http://hdl.handle.net/1822/42601.
Full textAbstract:
Dissertação de Mestrado - Ciclo de Estudos Integrados Conducentes ao Grau de Mestre em Engenharia de Telecomunicações e InformáticaO objetivo desta dissertação é a implementação de um modem de comunicação acústica subaquática com alto débito binário de baixo consumo. Este modem é constituído por um módulo emissor e um módulo recetor que permite comunicar num ambiente subaquático em tempo real através de sinais acústicos. As principais dificuldades neste tipo de comunicação são as características do ambiente subaquático que atenuam e degradam bastante o sinal ao longo da sua propagação. Após o desenvolvimento do modem, foram feitos vários testes em cenário real aos diferentes módulos e em diferentes condições. O modem acústico é constituído por dois módulos (emissor e recetor) e vários blocos associados. Em relação ao módulo emissor, fazem parte os seguintes blocos: interface do utilizador, modulador baseado em FPGA, conversor digital-analógico, amplificador de sinal e transdutor acústico. O módulo recetor é constituído por um hidrofone, amplificador/filtro, desmodulador baseado também em FPGA e finalmente, a interface com o utilizador. O principal fator que permitiu ao modem atingir elevados débitos, foi a técnica de modulação implementada. O modulador OOK de dois canais, possui duas ondas portadoras de 1 MHz e 0.5 MHz que permitem uma transmissão com um débito máximo de 1 Mbps. O ambiente aquático acrescentou bastantes dificuldades a este trabalho devido às suas características: elevadas atenuações a longas distâncias, existência de grande diversidade de ruído, fenómeno do multi-percurso, reduzida velocidade de propagação acústica na água (cerca de 1500 m/s) e o efeito de Doppler. Por fim, os testes realizados após o desenvolvimento do modem, revelaram que os objetivos iniciais foram cumpridos. O sistema foi capaz de transmitir sinais modulados e proceder à sua desmodulação de forma a serem corretamente interpretados pelo recetor.
The goal of this thesis is the development of a high data rate and low power ultrasonic wireless broadband communication system. This system is composed by a transmitter and a receiver module that enable underwater communication in real time through acoustic waves. The main difficulties to develop this type of system are: the features of the underwater environment that attenuate and degrade the signal along its spread. Once developed, tests were made in a real scenario with different modules and under different conditions. The system is divided in two main modules (transmitter and receiver). The transmitter module, is composed by the following blocks: a user interface, a modulator implemented in FPGA, a digital to analog converter, a signal amplifier and a transducer. On the other hand, the receiver module is formed by a hydrophone, an amplifier / filter, a demodulator also implemented in a FPGA and, finally, a user interface. The factor that allowed this system to achieve high data rate, was the selected modulation scheme. The OOK modulator with two data channels, has two carriers of 1 MHz and 0.5 MHz that allows to achieve a maximum bitrate of 1Mbps. The aquatic environment increased the level of difficulty on this work due its characteristics, which includes factors such as: large attenuation in long distances, the existence of great diversity of noise, the multipath phenomenon, the low speed of acoustic propagation in water (about 1500 m/s) and the Doppler effect. Finally, the tests carried out after the development of the system revealed that the initial objectives were accomplished. The system is capable of transmitting modulated signals and perform their demodulation in order to be correctly interpreted by the receiver.
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Šustrová, Eliška. "Žák s SPU na 1. stupni ZŠ." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-307883.
Full textAbstract:
This thesis deals with specific learning disabilities on the first level of primary education. The theoretical part is devoted to the definition of the basic concepts, to the etiology of the occurrence of specific learning disabilities and to the classification of their manifestation. It draws up the possibilities of the diagnostics and of the follow-up re-education. It describes the possibilities of educating students with disabilities at basic schools or individually. The practical part of this thesis focuses on exploring the issue of specific learning disabilities on the first level of primary education, namely, in the third and fourth grade. Three case reports whose results most visibly pointed to a problem are also present here.
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Žáčková, Martina. "Inkluzivní prostředí školní třídy na 1.stupni ZŠ s asistentem žáka s tělesným postižením." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-379407.
Full textAbstract:
This diploma thesis deals with the development of the school climate in a classroom with a seriously physically disabled child who requires permanent presence of an assistant. The theoretical part focuses on physical disabilities and their impact on the psyche of the child, the specifics of including a seriously disabled child in educational instructional contexts and the life of the classroom, and on the cooperation between a form teacher and an assistant whose support and help is required by the child during all lessons. The practical part uses a narrative of two girls and people who are closely related to them to offer answers to the inquiries into how have relationships within such a classroom and the attitude of classmates to a disabled child changed over the years; how can the presence of an assistant affect the climate of the classroom; and whether the external perception of the inclusion of a disabled child as a successful one corresponds with the feelings of the disabled child, of if the child sees the process otherwise. Case studies which helped the author to get a general picture of the situation confirmed it appeared that the factor which immensely affects inclusion of a physically disabled child in the classroom is the age at which children meet and the attitude of the teacher and the...
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Otipková, Zuzana. "Motorická výkonnost žáků s poruchou pozornosti spojenou s hyperaktivitou na 1. stupni základní školy." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-307056.
Full textAbstract:
Title: Motor performance of pupils with attention deficit hyperactivity disorder (ADHD). Objectives: The aim of the work was to determine the level of fine and gross motor skills of upper extremities of the pupils with diagnosis ADHD at schools specialized on these pupils and compare it with the fine and gross motor skills of upper extremities of children without this diagnosis at common elementary school. Further work objective was to determine the level of gross motor skills of lower limbs and laterality of paired organs (hand - foot) within above mentioned groups of pupils. Methods: To determine the level of fine and gross motor skills of upper extremities, gross motor skills of lower limbs, laterality of the upper and lower extremities of the pupils with and without ADHD aged 9-11 years we used these types of tests: "Spiral", "Dotting test", "Beads" (the level of fine motor skills of the upper extremities); "Pack", "Small plate tapping", "Big plate tapping" (the level of gross motor skills of upper extremities); "Tapping the leg" (the level of gross motor skills of the lower limbs); "Typing out the Rhythm" (the laterality of the lower limbs); "Bell" and "Matches" (the laterality of the upper extremities). Results: The fine motor level of dominant hand was in the case of ADHD diagnosed pupils...
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Tsai, Ping-Hsun, and 蔡秉勳. "Safety Stocks in Multistage Divergent (S-1,S)Inventory System under Different Service Measures." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/15544931850067471363.
Full textAbstract:
碩士國立交通大學
工業工程與管理系
87
The problem that we address is to determine appropriate safety stocks in a multistage divergent system for a high cost and low demand item. In this study, we proposed an approach for determining appropriate of safety stocks regarding holding cost objectives and service level and waiting time restrictions. The multistage divergent (S-1,S) inventory model assumes that customer demands of final stage are independent Poisson process, and the distributions of processing and transportation time of each stockpoint are arbitrary. The proposed approach are developed according the following steps, Step 1: Simplified the multistage inventory system to a two-echelon (S-1,S) inventory system. Thus, under the consideration of service level restriction, we determine appropriate safety stocks for the two-echelon (S-1,S) model; Step 2: Expand the nodes in second echelon to a two-echelon (S-1,S) inventory system. To determine appropriate safety stocks for the nodes of second echelon in the two-echelon (S-1,S) inventory system; Step 3: Repeat Step 2 to the final stage; Step 4: Verify whether or not the safety stocks satisfy the waiting time constraints. Finally, an example is given to illustrate the proposed approach.