Dissertations / Theses on the topic 'MnPX3, X: S, Se'
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Климов, Олексій Володимирович, Алексей Владимирович Климов, Oleksii Volodymyrovych Klymov, Денис Ігорович Курбатов, Денис Игоревич Курбатов, Denys Ihorovych Kurbatov, and М. Є. Лободюк. "Структурні особливості плівок Zn[1-x]Mn[x]S." Thesis, Сумський державний університет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/43924.
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Останнім часом значно зріс інтерес фахівців у галузі матеріалознавства до отримання та дослідження нових плівкових матеріалів для мікро- та оптоелектроніки, геліоенергетики і спінтроніки. До таких матеріалів можна віднести і плівки Zn[x]Mn[1] – [x]S, які мають оптимальні властивості для
створення віконних шарів сонячних елементів.
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Климов, Олексій Володимирович, Алексей Владимирович Климов, Oleksii Volodymyrovych Klymov, Денис Ігорович Курбатов, Денис Игоревич Курбатов, Denys Ihorovych Kurbatov, and М. Є. Лободюк. "Субструктурні особливості плівок Zn(1-x)Mn(x)S." Thesis, Сумський державний університет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/34077.
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Плівки твердих розчинів Zn(x)Mn(1-x)S були отримані методом квазізамкненого обєму у вакуумній установці ВУМ-5М. Досліджений вплив температури підкладки на розміри областей когерентного розсіювання.
При цитуванні документа, використовуйте посилання http://essuir.sumdu.edu.ua/handle/123456789/34077
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Hrbáček, Lukáš. "X Kogenerace s využitím palivových článků." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-227934.
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Point od this diploma work is present fuel cell like effective cogeneration source. Next compare with currently used cogeneration unit with combustion engine. This diploma work is split in four parts. First is introduction in the question primary resources. Second part discuss about cogeneration units with combustion engines. Third part is about fuel cells, their sorts and utilization. In fourth part is the economic compare both technology.
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Marcucci, Virginie. "Desperate Housewives, miroir tendu au(x) féminisme(s) américain(s) ?" Thesis, Tours, 2010. http://www.theses.fr/2010TOUR2014/document.
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Ce travail s’attache à étudier les éventuels féminismes de Desperate Housewives. La peinture que la série propose de femmes et mères au foyer américaines désespérées est a priori le lieu d’une dénonciation de leur vie et de leur condition qui n’est pas sans rappeler celle de Betty Friedan dans The Feminine Mystique au début des années soixante. De plus, de nombreuses contradictions du féminisme américain (en fait constitué de nombreuses sous-catégories et sensibilités) y trouvent un écho. Cette multiplicité des interprétations possibles de Desperate Housewives, ainsi que sa composante postmoderne et camp, en font le lieu privilégié d’un féminisme queer propre à la sérieThis study investigates the feminist messages conveyed by Desperate Housewives. The depiction of desperate American housewives and stay-at-home mothers seems at first to be a scathing indictment of their plight, not unlike that of Betty Friedan in The Feminine Mystique.Furthermore many inner dissensions of American feminism (a term far more pluralistic than one might think) are voiced in the television series. The different ways Desperate Housewives can be interpreted, along with its postmodern and camp components, make it possible for an idiosyncratic brand of queer feminism to emerge
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Vuong, Khuong Quoc Chemistry Faculty of Science UNSW. "Metal complex catalysed C-X (X = S, O and N) bond formation." Awarded by:University of New South Wales. Chemistry, 2006. http://handle.unsw.edu.au/1959.4/23015.
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This thesis describes the catalysed addition of X-H bonds (X = S, O and N) to alkynes using a range of novel rhodium(I) and iridium(I) complexes containing hybrid bidentate phosphine-pyrazolyl, phosphine-imidazolyl and phosphine-N heterocyclic carbene (NHC) donor ligands. The synthesis of novel bidentate phosphine-pyrazolyl, phosphine-imidazolyl (P-N) and phosphine-NHC (PC) donor ligands and their cationic and neutral rhodium(I) and iridium(I) complexes [M(P N)(COD)]BPh4, [M(PC)(COD)]BPh4, [Ir(P-N)(CO)2]BPh4 and [M(P-N)(CO)Cl] were successfully performed. An unusual five coordinate iridium complex with phosphine-NHC ligands [Ir(PC)(COD)(CO)]BPh4 was also obtained. Seventeen single crystal X-ray structures of these new complexes were determined. A range of these novel rhodium and iridium complexes were effective as catalysts for the addition of thiophenol to a variety of alkynes. Iridium complexes were more effective than rhodium analogues. Cationic complexes were more effective than neutral complexes. Complexes with hybrid phosphine-nitrogen donor were more effective than complexes containing bidentate nitrogen donor ligands. An atom-economical, efficient method for the synthesis of cyclic acetals and bicyclic O,O-acetals was successfully developed based on the catalysed hydroalkoxylation. Readily prepared terminal and non-terminal alkyne diols were cyclised into bicyclic O,O-acetals in quantitative conversions in most cases. The efficiency of a range of rhodium and iridium complexes containing bidentate P-N and PC donor ligands as catalysts for the cyclisation of 4-pentyn-1-amine to 2-methyl-1-pyrroline varied significantly. The cationic iridium complexes with the bidentate phosphine-pyrazolyl ligands, [Ir(R2PyP)(COD)]BPh4 (2.39-2.42) were extremely efficient as catalysts for this transformation. Increasing the size of the substituent on or adjacent to the donor led to improvement in catalytic activity of the corresponding metal complexes. The mechanism of the catalysed hydroalkoxylation was proposed to proceed by the initial activation of the alkyne via ?? coordination to the metal centre. The ?? binding of both aliphatic and aromatic alkynes to [Ir(PyP)(CO)2]BPh4 (2.44) was observed by low temperature NMR and no reaction between 2.44 and alcohols was observed. In contrast, the facility in which thiol and amine oxidatively added to 2.44 led the proposal that in the hydrothiolation and hydroamination reaction, the catalytic cycle commences with the activation of the X-H bond (X = S, N) by an oxidative addition process.
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Климов, Олексій Володимирович, Алексей Владимирович Климов, Olexii Volodymyrovych Klymov, Євген Миколайович Пекутовський, Евгений Николайович Пекутовский, and Yevgen Mykolaiovych Pekutovskii. "Спектральні дослідження плівок ZnxMn(1-x)S." Thesis, Видавництво СумДУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/25215.
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В роботі проводилось спектральне дослідження плівок ZnxMn(1-x)S в інфрачервоній області.
При цитуванні документа, використовуйте посилання http://essuir.sumdu.edu.ua/handle/123456789/25215В работе проводилось спектральное исследование пленок ZnxMn(1-x)S в инфракрасной области. При цитировании документа, используйте ссылку http://essuir.sumdu.edu.ua/handle/123456789/25215
We performed a spectral study of the films ZnxMn(1-x)S in the infrared region. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/25215
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Климов, Олексій Володимирович, Алексей Владимирович Климов, and Oleksii Volodymyrovych Klymov. "Структурні властивості плівок ZnxMn(1-x)S." Thesis, Вид-во НДУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/24879.
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В даній роботі проводилось дослідження структурних характеристик плівок ZnMnS, отриманих методом термічного випаровування у квазізамкненому об'ємі.
При цитуванні документа, використовуйте посилання http://essuir.sumdu.edu.ua/handle/123456789/24879В данной работе проводилось исследование структурных характеристик пленок ZnMnS, полученных методом термического испарения в квазизамкненому объеме. При цитировании документа, используйте ссылку http://essuir.sumdu.edu.ua/handle/123456789/24879
In this paper we conducted a study of the structural characteristics of the films ZnMnS, obtained by thermal evaporation in a quasi-closed volume. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/24879
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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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Єрьоменко, Юрій Сергійович, Юрий Сергеевич Еременко, Yurii Serhiiovych Yeromenko, Анатолій Сергійович Опанасюк, Анатолий Сергеевич Опанасюк, Anatolii Serhiiovych Opanasiuk, and А. О. Салогуб. "Плівки твердих розчинів Cd[x]Zn[1-x]S для вікон сонячних елементів." Thesis, Сумський державний університет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/45779.
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У результаті досліджень було встановлено, що завдяки високим значенням коефіцієнтів пропускання і заломлення в широкому діапазоні довжин хвиль та низькому рівню відбивання світла від поверхні, отримані плівки мають перспективу застосування в якості буферних шарів сонячних елементів з поглинальним шаром CdTe.
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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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PEYRET, PIERRE. "Aconitases vegetales : des proteines au(x) gene(s)." Clermont-Ferrand 2, 1994. http://www.theses.fr/1994CLF21598.
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Deux proteines a activite aconitase (aco i et aco ii) ont ete purifiees a partir de graines de melon. La caracterisation de ces enzymes montre qu'il s'agit de deux proteines monomeriques d'un poids moleculaire apparent de 97 kda ayant des points isoelectriques proches de 5. La sequence de 14 residus de l'extremite nh#2 terminale est identique pour ces deux formes proteiques. Si les etudes biochimiques n'ont pas permis de les differencier, seul un anticorps monoclonal distingue aco i de aco ii. Dans le meme temps, des anticorps polyclonaux ont permis d'isoler d'une banque de chair de melon un clone d'adnc s'averant etre incomplet. En utilisant ce dernier comme sonde pour cribler une banque de siliques immatures, nous avons isole l'homologue chez arabidopsis thaliana. D'une longueur de 3210 pb, ce clone complet code pour une proteine d'un poids moleculaire calcule de 98490 da. La comparaison de la sequence proteique deduite de ces clones d'adn complementaires fait apparaitre une forte homologie de plus de 70% avec les ire-bp (iron responsive element binding protein) alors qu'elle est de l'ordre de 45% avec les aconitases mitochondriales. Ces proteines a activite aconitase sont homologues a plus de 90% entre cucumis melo et arabidopsis thaliana. Le sequencage genomique montre que la sequence codante du gene d'arabidopsis thaliana est morcelee en 20 exons. Une cartographie precise de l'initiation de la transcription a revele l'existence de cinq sites possibles dont un utilise preferentiellement. Enfin, nous avons suivi l'expression de ce gene au cours du developpement par hybridation sur arn totaux et par l'etude de l'expression du gene rapporteur -glucuronidase sous le controle d'un fragment promoteur. Les resultats preliminaires semblent montrer que ce gene presenterait une expression constitutive avec une augmentation forte lors de la maturation des grains de pollen et de la graine ainsi que lors de la germination
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Salazar, Diego Alfonso Sandoval. "Existência implicada de órbitas periódicas para fluxos de Reeb em S¹ x S²." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/45/45131/tde-05122017-165508/.
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Consideramos o fluxo de Reeb associado a uma forma de contato em S¹ x S² que induz a estrutura de contato tight. Assumimos que o fluxo admite um par de órbitas periódicas L0 e L1 cujo link L = L0 L1 é transversalmente isotópico a ( S¹ x )( S¹ x ), em que n = (0,0,1) e s = (0,0,1) são os pólos norte e sul de S², respectivamente. O objetivo é provar que, nestas condições, existem infinitas órbitas periódicas no complementar desse link cujas classes de homotopia no complementar do link são prescritas de acordo com os números de rotação de L0 e L1.We consider the Reeb flow associated to a contact form on S¹ x S² which induces a tight contact structure. We assume that the flow admits a pair of closed orbits L0 and L1 whose link L = L0 L1 is transversely isotopic to (S¹ x)(S¹ x), where n = (0,0,1) and s =(0,0,1) are the north and south poles of S², respectively. The main goal is to prove that, under these conditions, there exit infinitely many closed orbits in the complement of this link whose homotopy classes in the complement of this link are prescribed according to the rotation numbers of L0 and L1.
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Manikowski, Jens. "Beitrag zur Chemie von Iminen Synthese und Reaktivität von N, X-Heterocyclen (X= N, S) /." [S.l. : s.n.], 1998. http://deposit.ddb.de/cgi-bin/dokserv?idn=958303371.
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Potgieter, Kim Carey. "Rhenium complexes with multidentate benzazoles and related N,X-donor (X = N, O, S) ligands." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1020773.
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The coordination behaviour of 4-aminoantipyrine (H2pap) and its Schiff base derivatives with the oxorhenium(V) and tricarbonyl rhenium(I) cores are reported. The reactions of trans-[ReOX3(PPh3)2] (X = Cl, Br) with H2pap were studied, and the complexes cis-[ReX2(pap)(H2pap)(PPh3)](ReO4) were isolated. The ligand pap is coordinated monodentately through the doubly deprotonated amino nitrogen as an imide, and H2pap acts as a neutral bidentate chelate, with coordination through the neutral amino nitrogen and the ketonic oxygen. The reactions of trans-[ReOBr3(PPh3)2] and cis-[ReO2I(PPh3)2] with -(2-aminobenzylideneamino)-1,2-dihydro-2,3-dimethyl-1-phenylpyrazol-5-one (H2nap) and 4-(2-hydroxybenzylideneamino)-1,2-dihydro-2,3-dimethyl-1-phenylpyrazol-5-one (Hoap) are also reported. The complexes cis-[Re(nap)Br2(PPh3)]Br, [ReO(OEt)(Hnap)(PPh3)]I and [ReO(OMe)(oap)(PPh3)]I were isolated and structurally characterized. The reactions of the Schiff base derivatives 1,2-(diimino-4’-antipyrinyl)ethane (dae) and 2,6-bis(4-amino-1,2-dihydro-2,3-dimethyl-1-phenylpyrazol-5-one)pyridine (bap) with [Re(CO)5X] (X = Br or Cl) produced fac-[Re(CO)3(dae)Cl] and fac-[Re(CO)3(bap)Br] respectively. A series of rhenium(I) tricarbonyl complexes containing bidentate derivatives of aniline was synthesized and structurally characterized. With 1,2-diaminobenzene (Hpda) the ‘2+1’ complex salt fac-[Re(CO)3(κ1-Hpda)(κ2-Hpda)]Br was isolated, but with 2-mercaptophenol (Hspo) the bridged dimer [Re2(CO)7(spo)2] was found. The neutral complex [Re(CO)3(ons)(Hno)] was isolated from the reaction of [Re(CO)5Br] with 2-[(2-methylthio)benzylideneimino]phenol (Hons; Hno = 2-aminophenol), with ons coordinated as a bidentate chelate with a free SCH3 group. In the complex [Re(CO)3(Htpn)Br] (Htpn = N-(2-(methylthio)benzylidene)benzene-1,2-diamine) the potentially tridentate ligand Htpn is coordinated via the methylthiol sulfur and imino nitrogen atoms only, with a free amino group. These rhenium(I) complexes, with the exception of [Re2(CO)7(spo)2], revealed broad emissions centred around 535 nm. The reactions of the rhenium(V) complex cis-[ReO2I(PPh3)2] with 2-aminothiophenol (H2atp), benzene-1,2-dithiol (H2tdt) and 2-hydroxybenzenethiol (H2otp) led to the formation of the rhenium(III) compounds [Re(Hatp)(ibsq)2].OPPh3, [Re(sbsq)3].OPPh3 and [Re(obsq)3].OPPh3 (ibsq = 2-iminothiobenzosemiquinonate, sbsq = 1,2-dithiobenzosemiquinonate, obsq = 2-hydroxothiobenzosemiquinonate) respectively. The complexes adopt a trigonal prismatic geometry around the rhenium centre with average twists angles between 3.20-26.10˚. The E1/2 values for the Re(III)/Re(IV) redox couple were found to be 0.022, 0.142 and 0.126 V for [Re(Hatp)(ibsq)2].OPPh3, [Re(sbsq)3].OPPh3 and [Re(obsq)3].OPPh3 respectively. The reactions of the benzoxazole ligands, 3-(benzoxazol-2-yl)pyridin-2-ol (Hbop) and 5-amino-2-(benzoxazol-2-yl)phenol (Habo) with a [ReO]3+ precursor led to the rhenium(III) complex, [ReCl2(bop)(PPh3)2], and the complex salt, [ReO(abo)I(PPh3)2]ReO4, respectively. A variety of benzothiazole and benzimidazole derivatives were reacted with [Re(CO)5Br]. In the case of bis(benzothiazol-2-ylethyl)sulfide (bts), the neutral complex fac-[Re(CO)3(bts)Br] was obtained. The dimeric complexes (μ-dbt)2[Re(CO)3]2 and (μ-mbt)2[Re(CO)3]2 were formed when 1,3-bis(benzothiazol-2-yl)thiourea (Hdbt) and 1-(benzothiazol-2-ylidene)-3-methylthiourea (Hmbt) were used as ligands. The reaction of 2,2’-(oxybis(methylene))bis(benzimidazole) (bmb) with [Re(CO)5Cl] resulted in the rhenium(I) complex salt fac-[Re(CO)3(bmb)]+, with the tri-μ-chlorohexacarbonyl dirhenate [Re2(CO)6Cl3]- as the counter anion. The neutral complex fac-[Re(CO)3(btp)Cl] was isolated from the reaction of the 2,9-bis(benzothiazol-2-yl)-1,10-phenanthroline (btp) ligand and [Re(CO)5Cl]. The reactions of trans-[ReOCl3(PPh3)2] with bis(benzimidazol-2-ylethyl)sulfide (btn) and 1-(benzothiazol-2-ylidene)-3-methylthiourea (Hmbt) led to the formation of the cationic compounds (μ-O)2[Re2O2(btn)2]I2 and [ReCl2(bte)(PPh3)2]Cl (bte = (benzothiazole-2-yl)-N-ethylidenemethanamine) respectively.
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Cassano, Valérie. "Nouveaux hétérocycles organométallés polynucléaires à liaisons Ge-Pt et Ge-X (X=O, S, N)." Toulouse 3, 1994. http://www.theses.fr/1994TOU30091.
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Ce memoire concerne l'etude de nouvelles structures heterocycliques polynucleaires a liaison germanium-platine me#2ge(x)#nge(me#2)ptl#2 (x = ch#2 n = 0,1,2 ; x = o,s,n,cp#2fe n = 1). Ce travail s'inscrit dans le cadre de l'etude i) des intermediaires germanies a metal 14 tricoordine (stabilisation dans la sphere des metaux de transition) ii) des clusters des elements de la colonne 14 et des elements du groupe 10 iii) des composes organogermanies heterocycliques. Les deux premieres parties de ce travail sont consacrees aux methodes de synthese et a l'etude physicochimique de ces divers heterocycles polymetalles. De nombreuses reactions de clivage avec des halogenes, des halogenures organiques, de double germylation de derives insatures sont egalement decrites. L'etude de la reactivite des complexes trinucleaires me#2ge-ge(me#2)ptl#2, qui peuvent etre formellement consideres comme des heterocycles a trois chainons ou des complexes digermene-metal de transition, est plus particulierement developpee. Une etude des complexes lineaires cistrans (clme#2ge)#2ptl#2 est egalement presentee. Tous ces clusters permettent par reaction avec la triazolinedione d'acceder a de nouveaux derives a enchainement ge-n-n-geme#2ge(ch#2)#nge(me#2)nc(o)n(r)c(o)n (n = 0,1,2 ; r = ph, me). Nous decrivons, dans le troisieme chapitre, la synthese directe et abordons certains aspects de la reactivite de ces nouvelles structures. Enfin, dans la quatrieme partie, nous presentons l'etude de nouveaux petits cycles germanies tendus des types r#2geoso#2o, r#2gen(r')c(s)n(r') et r#2gege(r#2)n(r')c(s)n(r') qui se sont averes etre des precurseurs d'especes a germanium tricoordine r#2ge=x
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Коваль, Павло Вікторович, Павел Викторович Коваль, Pavlo Viktorovych Koval, Анатолій Сергійович Опанасюк, Анатолий Сергеевич Опанасюк, Anatolii Serhiiovych Opanasiuk, О. В. Домнич, et al. "Аналіз елементного складу плівок Pb[1-x]Sn[x]S методами PIXE та m-PIXE." Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/40168.
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У даній роботі вивчалися плівки Pb1-xSnxS, отримані термічним випаровуванням у вакуумі методом гарячої стінки на скляних підкладках. Для визначення елементного складу конденсатів використовувалося рентгенівське характеристичне випромінювання індуковане протонним пучком (методи PIXE, μ-PIXE). Відповідні дослідження проводилися на мікроаналітичному прискорювальному комплексі
«Сокіл» (ІПФ, Суми, Україна) з енергією пучка протонів 1,5 МеВ. Подальший аналіз спектрів PIXE здійснювався з використанням програми GUPIXWIN.
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Cai, Liuchun. "Molecular structure of (Ga₂S₃)x(GeS₂)₁₋x glasses raman scattering and T-modulated DSC." Cincinnati, Ohio : University of Cincinnati, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1057759838.
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Lecián, Petr. "Ozařovač parabolické antény v pásmu X." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218634.
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The work addresses the unusual proposal feed for parabolic antenna with circular polariza-tion signal. This is a modified waveguide feed, waveguide polarizer with a septum. Contemporary RHCP and LHCP wave occurs in several applications of microwave commu-nication and measurement system. From this point of view the septum polarizer can be useful. The septum polarizer is a four-port waveguide device. The square waveguide at one end con-stitutes two ports because it can support two orthogonal modes. A stepped septum divides the square waveguide into two standard rectangular waveguides sharing a common broad-wall. The size of the septum as well as two versions of the waveguides excitation were analyzed and are described in this paper. Ansoft HFSS is software for design and simulation of feed. This software can visualize not only the specified model feed, but also the course of electromagnetic field in feed and over time.
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Inagaki, Marcelo Kodi. "Teoremas de tipo Hilbert e Liebmann para superfícies em S² x R e H² x R." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/45/45131/tde-22032016-214502/.
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Neste trabalho será demonstrada uma versão dos teoremas de Hilbert Liebmann para superfícies em S² x R e H² x R, que são teoremas de existência e unicidade de superfícies completas com curvatura Gaussiana constante nesses ambientes. Como parte da demonstração, a saber a existência, será apresentada uma classificação das superfícies de revolução completas com curvatura Gaussiana constante em torno de um eixo qualquer, em S² x R e em torno de um eixo lorentziano, em H² x R.In this work it will be proved a version of Hilbert and Liebmann theorems for surfaces in S² X R and H² X R, wich are theorems about existence and uniqueness of complete surfaces with constant Gaussian curvature in those ambients. As part of the proof, namely the existence, it will be presented a classication of complete revolution surfaces with constant Gaussian curvature around any axis in S² X R and around a Lorentzian axis in H² X R.
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Kaster, Brian C. "Magnetic Properties of Co1-xFexS2." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1311874514.
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Velím, Michael. "Defektoskopie s využitím RTG." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-399582.
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This diploma thesis deals with a defect detection with X-rays in the manufacturing procedure in the electrotechnical field. The work summarises the knowledge about technical possibilities of an X-ray device Cougar of YXlon company. Part of the work is focusing on scanning in 2D, 3D visualization and automatic analysis. The thesis describes inspection methods of a connector connection, the quality of a soldered joint and an encapsulated product.
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Hoare, Benjamin David. "The S-matrix of the Pohlmeyer-reduced AdS5 x S5 superstring." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9760.
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The Pohlmeyer reduction of the AdS5 x S5 superstring is a fermionic generalization of the relationship between the O(3) sigma model and the sine-Gordon model. In the reduction procedure the Virasoro constraints are solved and the resulting reduced theory is Lorentz-invariant, integrable and classically equivalent to the superstring sigma model. Its action is that of a gauged WZW model plus an integrable potential coupled to fermions. Furthermore, the theory is UV-finite and conjectured to be related to the superstring at a quantum level. This thesis begins with a review of the Pohlmeyer reduction, concentrating on its rôle in string theory. The main focus of the thesis is an investigation into the S-matrix of the Pohlmeyer-reduced AdS5 x S5 superstring. Expanding around the trivial vacuum, a local quartic action is constructed for the 8 + 8 (bosonic and fermionic) massive asymptotic degrees of freedom. The resulting perturbative S-matrix has the same tensorial structure and group factorization property as the light-cone gauge-fixed superstring S-matrix. However, it does not satisfy the Yang-Baxter equation. As a possible resolution it is proposed to consider a particular limit of the quantum-deformed (psu(2|2)xR3)-invariant R-matrix of Beisert and Koroteev. The exact form of the corresponding S-matrix is constructed and possible relations to the perturbative computation are explored. The on-shell symmetry of the quantum-deformed S-matrix may be interpreted as a quantum-deformed N = 8 two-dimensional supersymmetry. After describing the representation theory of Uq(psu(2|2)xR2) and the pole structure of the deformed S-matrix the bootstrap programme is used to construct the S-matrix elements for the bound states. The thesis concludes with a discussion of the current status of the Pohlmeyer reduction and open questions.
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Holbrook, Chad Monroe. "Characterization and Solid Electrolyte behavior of (Ag2S)x(As2S3)1-x glasses." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1187051715.
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Kim, Sunphil. "P-type thermoelectric materials for waste heat recovery system: P-type Mg2Sn1-xSix and Pb1-x-yEuxSe:Nay." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1405345044.
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Poudeu, Poudeu Pierre Ferdinand. "Quaternary Silver Bismuth Chalcogenide Halides Ag - Bi - Q - X (Q = S, Se; X = Cl, Br): Syntheses and Crystal Structures." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2004. http://nbn-resolving.de/urn:nbn:de:swb:14-1075806094921-44623.
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Systematic synthetic investigations of the quaternary systems Ag - Bi - Q - X (Q = S, Se; X = Cl, Br) led to a variety of quaternary phases that exhibit considerable structural diversity with increasing complexity. These include Ag1.2Bi17.6S23Cl8, AgBi4Se5Br3 and numerous members of the homologous double series Agx(N+1)Bi2+(1-x)(N+1)Q2+(2-2x)(N+1)X2+(2x-1)(N+1) denoted (N, x)P. N represents the order number of a given homologue and x is the degree of substitution of Bi by Ag with 1/2 <= x <= 1. Their structures are built up from two alternating types of modules denoted A and B that are stacked parallel to (001). In module A, rows of edge-sharing [MZ6] octahedra (Z = X and/or Q); M = Ag and/or Bi) running parallel to [010] alternate along [100] with parallel chains of paired monocapped trigonal prisms around Bi atoms. The module type denoted B represents NaCl-type fragments of varying thickness. It is defined by the number N of octahedra within the chain of edge-sharing octahedra running diagonally across it in the (010) plane of the structure. The thickness of module B for current members of the series extends from N = 0 to N = 7. All structures exhibit Ag/Bi disorder in octahedrally coordinated metal positions and Q/X (Q = S, Se; X = Cl, Br) mixed occupation of some anion positions. Some of these compounds are narrow gap semiconductors.
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Poudeu, Poudeu Pierre Ferdinand. "Quaternary Silver Bismuth Chalcogenide Halides Ag - Bi - Q - X (Q = S, Se; X = Cl, Br): Syntheses and Crystal Structures." Doctoral thesis, Technische Universität Dresden, 2003. https://tud.qucosa.de/id/qucosa%3A24299.
Full textAbstract:
Systematic synthetic investigations of the quaternary systems Ag - Bi - Q - X (Q = S, Se; X = Cl, Br) led to a variety of quaternary phases that exhibit considerable structural diversity with increasing complexity. These include Ag1.2Bi17.6S23Cl8, AgBi4Se5Br3 and numerous members of the homologous double series Agx(N+1)Bi2+(1-x)(N+1)Q2+(2-2x)(N+1)X2+(2x-1)(N+1) denoted (N, x)P. N represents the order number of a given homologue and x is the degree of substitution of Bi by Ag with 1/2 <= x <= 1. Their structures are built up from two alternating types of modules denoted A and B that are stacked parallel to (001). In module A, rows of edge-sharing [MZ6] octahedra (Z = X and/or Q); M = Ag and/or Bi) running parallel to [010] alternate along [100] with parallel chains of paired monocapped trigonal prisms around Bi atoms. The module type denoted B represents NaCl-type fragments of varying thickness. It is defined by the number N of octahedra within the chain of edge-sharing octahedra running diagonally across it in the (010) plane of the structure. The thickness of module B for current members of the series extends from N = 0 to N = 7. All structures exhibit Ag/Bi disorder in octahedrally coordinated metal positions and Q/X (Q = S, Se; X = Cl, Br) mixed occupation of some anion positions. Some of these compounds are narrow gap semiconductors.
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Horsburgh, Lynne. "Structural studies of complexes of some S-block elements." Thesis, University of Newcastle Upon Tyne, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318708.
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Gugler, Klaus, and Mario Liebensteiner. "Productivity Growth and the General X-factor in Austria´s Gas Distribution." WU Vienna University of Economics and Business, 2016. http://epub.wu.ac.at/5221/1/wp236.pdf.
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We estimate cost functions to derive productivity growth using a unique database on costs and outputs of essentially all regulated Austrian gas distribution companies over the period 2002-2013, covering the times before and after the introduction of incentive regulation in 2008. We estimate a concave relation between total costs and time, and a significant one-off but permanent reduction in real costs after an imposed reduction in granted costs in the course of the introduction of incentive regulation. Our results imply that technological opportunities were higher in the early years of the sample than in later years, and that productivity growth grinded to a halt from 2008 on. We conclude that technological opportunities are exhausted (for the time being) in the Austrian gas distribution sector giving rise to an optimal general X factor (X-gen) of zero for the foreseeable future. (authors' abstract)Series: Department of Economics Working Paper Series
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Assunção, Thiago Lima de. "Determinação analítica do aquecimento aerodinâmico do veículo hipersônico aeroespacial 14-X S." Instituto Tecnológico de Aeronáutica, 2014. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=3101.
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Veículos aeroespaciais, voando a grandes velocidades, estão sob o efeito de elevadas cargas térmicas decorrentes da transformação da energia cinética do escoamento em energia térmica, causando um fenômeno conhecido como aquecimento aerodinâmico. O objetivo desta dissertação é, através de uma abordagem analítica do problema, estimar os níveis de fluxo de calor ao qual o Veículo Hipersônico Aeroespacial 14-X S estará sujeito durante o voo atmosférico. O Veículo Hipersônico Aeroespacial 14-X S faz parte de um projeto estratégico do Comando da Aeronáutica que consiste de um demonstrador da tecnologia de um estato-reator a combustão supersônica (scramjet) que está sendo desenvolvido na Divisão de Aerotermodinâmica e Hipersônica, do Instituto de Estudos Avançados (IEAv). Este trabalho apresenta uma revisão bibliográfica dos principais projetos em scramjet desenvolvidos até o momento, além das principais teorias para cálculo de fluxo de calor de veículos em voo. As cargas térmicas são obtidas através de duas modelagens distintas para o ar atmosférico, sendo a primeira como um gás perfeito e a segunda como um gás em equilíbrio termodinâmico. Depois, através do desenvolvimento de sub-rotinas computacionais desenvolvidas em linguagem MATLAB, os fluxos de calor são calculados para as diversas regiões do veículo e em diversas condições de voo simuladas, baseadas na trajetória do Veículo de Sondagem VSB 30. Os resultados foram comparados aos obtidos de projetos similares e também a uma análise preliminar na área de CFD (Computational Fluid Dynamics) apresentando uma relevante concordância.
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Ait-Abdesselam, Nacira. "Rapport au(x) savoir(s) des adultes "en situation d'illettrisme" en formation." Paris 8, 2003. http://www.theses.fr/2003PA082247.
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Cette thèse porte sur l'expérience des adultes dits " illettrés " avec le savoir. L'objectif de ce travail est d'approcher le sens qu'ils attribuent au fait d'entrer en formation et d'apprendre à lire et écrire. Quel sens un individu, familiarisé avec l'échec, donne-t-il au fait d'entrer en formation ? Comment se mobilise-t-il sur des contenus de savoirs en apparence très éloignés de ses préoccupations et problèmes quotidiens ? Qu'est-ce que le savoir pour lui ? Cette recherche se situe dans une problématique du sens du savoir et de l'apprendre et vise à comprendre le rapport des personnes à la formation, et plus largement leur rapport au savoir. Comment abordent-elles les différentes pratiques de lecture/écriture ? Quels sens et valeurs confèrent-elles à ces activités? Quel(s) usage(s) en font-elles ? Au travers d'observations et d'entretiens, cette recherche qualitative permet des éclairages sur la manière dont les adultes faiblement scolarisés construisent et organisent leur mondeThis thesis relates to the experiment with the knowledge of adults known as "illiterate". The objective of this work is to approach the meaning they allot to the fact of starting a formation and learning to read and write. What meaning does a person familiarized with the failure give to the fact of following a formation ? How is this person mobilized on contents of knowledge seemingly far away from her daily concerns ? What is knowledge for her ? This research dealing with the meaning of knowledge and training, aims at understanding the relationship of people to formation, and more largely their relationship to the knowledge. How do they approach the various practices of reading and writing ? Which meaning and values do they confer on these activities ? How would they use it ? Through observations and talks, this qualitative research allows lightings on the way the adults slightly educated build and organize their world
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Azzam, Samy. "Saint-Martin : d'une autonomie à l'autre : des faits au(x) droit(s)." Thesis, Toulouse 1, 2017. http://www.theses.fr/2017TOU10030/document.
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Климов, Олексій Володимирович, Алексей Владимирович Климов, Oleksii Volodymyrovych Klymov, Денис Ігорович Курбатов, Денис Игоревич Курбатов, Denys Ihorovych Kurbatov, Анатолій Сергійович Опанасюк, et al. "Дослідження оптичних властивостей плівок твердих розчинів Zn(1-х)Mn(х)S." Thesis, "Рута" Чернівецького національного університету імені Ю. Федьковича, 2013. http://essuir.sumdu.edu.ua/handle/123456789/34060.
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В даній роботі нами проводилося дослідження оптичних властивос-
тей плівок Zn1-xMnxS. Вимірювання оптичних характеристик конденсатів (спектрів пропускання та відбиття) здійснювалося за допомогою спектрофотометра СФ-46 в інтервалі довжин хвиль близьких до червоного порогу фотопровідності матеріалів при кімнатній температурі.
При цитуванні документа, використовуйте посилання http://essuir.sumdu.edu.ua/handle/123456789/34060
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Baumgartner, Wayne. "Elemental abundances via X-ray observations of galaxy clusters and the InFOC[mu]S [i.e. InFOCuS] hard X-ray telescope." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/1387.
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Thesis (Ph. D.) -- University of Maryland, College Park, 2004.InFOCuS on t.p. of PDF has the Greek letter for MU instead of u. Thesis research directed by: Astronomy. InFOCuS in PDF has the Greek letter for mu instead of u. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Addison, Desnoyer N. "Harnessing the reactivity of late transition metals for the making and breaking of C-X (X = O, S, N) bonds." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62437.
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This thesis explores the fundamental reactivity of π-complexes of rhodium and nickel, their reactivity to form well-defined 2-metallaoxetanes, as well as subsequent functionalization chemistry of these rare metallacycles. More generally, we also examine C-O and C-S bond cleavage processes.
In Chapter 1, we discuss the history of 2-metallaoxetanes, as well as outline some of the fundamental organometallic chemistry of group 10 transition metal complexes.
In Chapter 2, the chemistry of a well-defined 2-rhodaoxetane with unsaturated electrophiles is explored. In all cases, insertion into the Rh-O bond is observed. When electron-deficient alkynes are used as substrates, rhodadihydropyrans are formed. Reactivity studies have found these complexes to be robust. In contrast, when aldehydes are used, the product rhodaacetals are much less stable. Curiously, the aldehyde insertions were found to be reversible.
Chapter 3 outlines the reactivity of low-valent nickel complexes with three-membered oxacycles. When epoxides were used, isomerization to the corresponding aldehyde was observed as the primary reaction pathway. Experiments with tetrasubstituted epoxides indicate that these reactions occur via 2-nickela(II)oxetane intermediates. Further, catalytic functionalization was achieved using HBpin or B2pin2. When using oxaziridines as the three-membered heterocycle, N-O oxidative addition was found to rapidly generate oxazanickela(II)cyclobutanes. Fragmentation of these metallacycles resulted in the formation of a mixture of imine and aldehyde products.
Chapter 4 discusses the synthesis, mechanism of formation and reactivity of a family of well-defined 2-nickela(II)oxetanes. These nickelacycles are formed with retention of configuration, which had not been observed previously. Computational calculations were performed, which
support an unexpected bimetallic mechanism of oxidative addition that would allow for the observed stereochemistry. Reactivity studies indicate that the nickelaoxetanes are susceptible to protonolysis, insertion and oxidatively-induced reductive elimination reactions.
Chapter 5 describes the chemistry of nickel with esters and thioesters. For thioesters, Cacyl-S bond cleavage followed by decarbonylation was observed to form methyl-thiolate complexes of nickel(II). In contrast, aryl esters were found to undergo Caryl-O oxidative addition, producing aryl-acetate nickel(II) complexes. Both of these classes of compounds were found to be competent in stoichiometric Suzuki-type cross-coupling reactions, but attempts to render the reactions catalytic have so far been unsuccessful.Science, Faculty of
Chemistry, Department of
Graduate
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Bononi, Rodrigo dos Santos. "Tipos de homotopia das camponentes conexas por caminho do espaço das funções contínuas G(X,S^n), onde X=S^{n+k}, n> ou = 1 e k=0,1 /." São José do Rio Preto, 2019. http://hdl.handle.net/11449/180964.
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Orientador: João Peres VieiraCoorientador: Thiago de Melo
Banca: Erminia de Lourdes Campello Fanti
Banca: Karen Regina Panzarin
Resumo: Sejam X e Y espaços topológicos conexos por caminhos e denotemos por G(X, Y ) = Y^X o espaço das funções contínuas entre o espaços X e Y com a topologia compacto-aberta. Neste trabalho, apresentamos uma classificação completa dos tipos de homotopia das componentes conexas por caminho do espaço das funções contínuas G(X,S^n), onde X=S^{n+k}, n> ou = 1 e k=0,1
Abstract: Let X and Y be path connected topological spaces and we denote by G(X, Y ) = Y X the continuous map space between X and Y with the compact-open topology. In this work, we present a complete classification of the homotopy types of the path connected components of the continuous map space G(X, Sn ) where X = S n+k, n > 1 and k = 0, 1
Mestre
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VILLENEUVE, REGINE. "Etude des mecanismes de substitutions cationiques dans le supraconducteur yba#d#e#u#x cu#t#r#o#i#s o#s#i#x #p#l#u#s #x et de leurs effets sur la structure et les proprietes magnetiques : cas du zinc et du nickel." Paris 11, 1996. http://www.theses.fr/1996PA112054.
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La substitution d'impuretes non magnetique de zinc en site cuivre des plans conducteurs dans le compose supraconducteur yba#2cu#3o#7 constitue une sonde pour l'etude du role du magnetisme dans l'apparition de la supraconductivite. Une etude realisee par diffraction de neutrons et de rayons x nous a permis de mettre en evidence les effets de la substitution du cuivre des plans conducteurs sur les structures cristallines et magnetiques. Nous avons synthetise des poudres substituees en zinc et en nickel par reaction en phase solide. De plus, en optimisant la methode de l'autoflux, nous avons elabore des monocristaux substitues en zinc, d'un volume permettant une etude par diffusion inelastique des neutrons. L'etude cristallographique de ces materiaux a revele que le deplacement des atomes de zinc vers le site oxygene apical induit une limite de substitution du zinc en site cuivre des plans. Au dela de cette limite le zinc commence a se substituer dans les chaines. Nous avons observe une diminution de la temperature de neel des composes isolants substitues en zinc. Nous attribuons cet effet a la dilution par le zinc du reseau antiferromagnetique bidimensionnel. Le comportement magnetique de type curie-weiss en site cuivre des plans, observe par diffraction de neutrons polarises, ainsi que l'ecrantage des effets structuraux de la substitution par le dopage indiquent une reduction de la mobilite des porteurs de charges. Par ailleurs, la substitution par le nickel induit selon l'axe c une reduction importante du parametre de maille ainsi qu'un doublement de la maille magnetique. Nous interpretons cet effet par une substitution partielle du nickel en site cuivre des chaines n'affectant pas le transfert de charges
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Moura, Caroline Gomes. "S?ntese e caracteriza??o de PSFC (Pr0,5Sr0,5Fe1-xCuxO3-?, sendo x=0,2 e x=0,4) para aplica??o como catodo de c?lulas a combust?vel de ?xido s?lido." Universidade Federal do Rio Grande do Norte, 2015. http://repositorio.ufrn.br/handle/123456789/20152.
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O PSFC (Pr0.5Sr0.5Fe1-xCuxO3-?) ? um novo ?xido misto com estrutura perovskita que vem sendo estudado para aplica??o como catodo de c?lulas a combust?vel de ?xido s?lido de temperatura intermedi?ria (600-750 ?C), principalmente devido a sua elevada condutividade i?nica e eletr?nica abaixo de 800 ?C. Neste trabalho, p?s de PSFC com duas composi??es diferentes (Pr0,5Sr0,5Fe0,8Cu0,2O3-PSFC5582 e Pr0,5Sr0,5Fe0,6Cu0,4O3-PSFC5564) foram sintetizados pelo m?todo dos citratos utilizando uma nova rota. Os p?s obtidos foram caracterizados por an?lise t?rmica (Termogravimetria e Calorimetria Diferencial Explorat?ria), e os materiais calcinados a 800, 900 e 1000 ?C por 5h foram analisados por difratometria de raios X (DRX), com refinamento Rietveld dos dados de difra??o e dilatometria. Filmes de composi??o PSFC5582 foram obtidos por serigrafia do p? calcinado a 1000 ?C. Os filmes foram depositados em substrato de c?ria dopada com gadol?nia (CGO) e sinterizados a 1050 ?C por 2h. O desempenho eletroqu?mico dos eletrodos foi avaliado por espectroscopia de imped?ncia e a interface eletrodo/eletr?lito foi observada por microscopia eletr?nica de varredura (MEV). A resist?ncia espec?fica por ?rea (ASR) foi 0,44 ?.cm? a 800 ?C, um valor pouco inferior aos reportados na literatura para catodos contendo cobalto. Os coeficientes de expans?o t?rmica (CET) do PSFC de ambas as composi??es variaram entre 13 e 15 x 10-6 ?C-1 , numa faixa de temperatura de 200 a 650 ?C, demonstrando a boa compatibilidade t?rmica destes catodos com eletr?litos de Ce0,9Gd0,1O1,95 (CET = 12 x 10-6 ?C).
The PSFC (Pr0.5Sr0.5Fe1-xCuxO3-?) is a new mixed oxide perovskite and has been studied and evaluated the cathode materials for intermediate temperature solid oxide fuel cells (IT-SOFCs), mainly due to its good compatibility with the electrolyte (CGO) and its high ionic conductivity and electronic in intermediate temperature. In this work, PSFC powders with two different compositions (Pr0,5Sr0,5Fe0,8Cu0,2O3- PSFC5582 and Pr0,5Sr0,5Fe0,6Cu0,4O3-PSFC5564) were synthesized by the citrate method using a new route. The powders obtained were characterized by thermal analysis (Differential Scanning Calorimetry and Thermogravimetry), and the material calcined at 800, 900 and 1000 ?C for 5h were analyzed by X-ray diffractometry (XRD), with the Rietveld refinement of the diffraction data and dilatometry. PSFC5582 composite films were obtained by screen printing of powder calcined at 1000 ?C. The films were deposited on substrate ceria doped with gadolinia (CGO) and then sintered at 1050 ?C for 2h. The electrochemical performance of the electrodes was evaluated by impedance spectroscopy and the interface electrode/electrolyte was observed by scanning electron microscopy (SEM). The specific resistance area (ASR) was 0.44 ?.cm? at 800 ?C, slightly lower than those reported in the literature for cathodes containing cobalt. The thermal expansion coefficients of both the PSFC compositions were obtained and varied between 13 and 15 x 10-6 ?C-1 , in a temperature range of 200 to 650 ?C, demonstrating the good thermal compatibility of cathodes with Ce0,9Gd0,1O1,95 electrolytes (CET = 12 x 10-6 ?C).
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Rondon, Rodriguez Deyanira. "Activation de liaisons C-X (X= H, O, C, Cl, S) et aromatisation d'hydrocarbures cycliques par le fragment cationique pentaméthylcyclopentadienyl ruthénium." Toulouse 3, 1992. http://www.theses.fr/1992TOU30203.
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L'etude de la reactivite du fragment electrophile cp#*ru#+ avec des hydrocarbures cycliques non aromatiques constitue le sujet de recherche de ce memoire. Le chapitre 1 est une mise au point bibliographique decrivant tout d'abord les differents complexes electrophiles des metaux de transition employes pour l'activation de liaisons c-h et c-c des hydrocarbures. La reactivite des principaux complexes du ruthenium contenant le ligand c#5me#5 (cp#*) est egalement discutee. Dans le chapitre 2 nous avons aborde la reactivite de cp#*ru#+ avec des hydrocarbures cycliques en c#6, derives de: cyclohexene, cyclohexenone, cyclohexanol et cyclohexanone. L'aromatisation de ces molecules a ete obtenue apres deshydrogenation, deshydratation et demethanation, meme a temperature ambiante et conduit a la formation de derives du type cp#*ru (-arene)#+. Le chapitre 3 est consacre a l'etude de l'activation de liaisons c-cl par le fragment cp#*ru#+; on peut aromatiser et aboutir ainsi a une dechloruration de derives de chlorocyclohexane. Un resultat original est la reaction de cp#*ru#+ avec le tetrachloro-2,2,4,4-cyclohexanol; dans ce cas la distribution des produits d'aromatisation obtenus cp#*ru (-arene)#+ (arene=benzene, chlorobenzene et phenol) peut etre controlee par les conditions de reaction employees. L'ordre de reactivite des liaisons a ete etablie comme suit: c-cl>c-o>c-h>c-c. Enfin, les reactions de cp#*ru#+ avec des hydrocarbures soufres cycliques non aromatiques sont presentees dans le chapitre 4. Nous avons mis en evidence l'hydrodesulfuration du sulfure de cyclohexane en benzene et la coupure des liaisons c-s du 1,3-dithiane qui conduit a la formation d'un nouveau complexe sulfure du ruthenium (ii)
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Seidov, Zakir [Verfasser]. "ESR investigations of TlMX2 (M = Fe, Ga, In, X = S, Se) / Zakir Seidov." Aachen : Shaker, 2003. http://d-nb.info/1179039912/34.
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Gallo, Cibele Merched. "Micropropagação do porta-enxerto Mr. S. 2/5 (Prunus cerasifera x Prunus spinosa)." Universidade Federal de Pelotas, 2012. http://repositorio.ufpel.edu.br/handle/ri/2056.
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Previous issue date: 2012-02-15Although fruiting plants can be propagated by several methods, commercial seedlings of Prunus are obtained by grafting a scion on a rootstock. In Rio Grande do Sul State, because of the proximity of the canning industry, the rootstocks originate from the disposal pits of late maturing cultivars, allowing the occurrence of varietal mixtures, and consequently, the formation of orchards with uneven plants. On the other hand, vegetative propagation leads to the formation of uniform plants, because they keep the characteristics of the mother-plant. This propagation may be made by several methods, for example, micropropagation. Thus, to develop protocols for vegetative propagation will contribute to the production of seedlings of Prunus spp. in southern Brazil. The aim of this work was to optimize in vitro multiplication and rooting, and the acclimatization of shoots from the rooting medium with rootstock Mr. S. 2/5.This work was divided into two chapters, one on the in vitro multiplication, and the second refers to in vitro rooting and acclimatization. In the first chapter, composition of salts, culture medium pH, source and concentration of carbohydrate, and concentration of IBA were tested. In the second chapter, the objective was to evaluate the effect of IBA concentration, and the permanence time of the shoots in the culture medium, in vitro rooting, and their survival during acclimatization phase. At the multiplication stage, the explants cultivated in MS medium, pH 5.2, showed a higher number of shoots. However, the source and concentration of carbohydrate had no influence on number and length of the shoots formed. In relation to IBA concentrations, supplemented mediums with 0.06mgL-1 increased formation of shoots, but had no significant influence on their length. With respect to in vitro rooting phase and acclimatization, shoots cultivated in a culture medium with 1.6mgL-1 IBA, during 12 days, showed high percentage of rooting, approximately 90%, as well as higher percentage of surviving plants in the acclimatization phase.
Apesar das plantas frutíferas serem propagadas por vários métodos, as mudas comerciais de prunáceas são obtidas por meio da enxertia de uma cultivar copa sobre um porta-enxerto. No Rio Grande do Sul pela proximidade das indústrias de conserva, os porta-enxertos são originários a partir do descarte dos caroços de cultivares de maturação tardia, aspecto este que permite a ocorrência de misturas varietais e consequentemente a formação de pomares com plantas desuniformes. Por outro lado, a propagação vegetativa leva à formação de plantas uniformes, pois mantém as características da planta matriz, podendo esta ser realizada por diversos métodos, como por exemplo, a micropropagação. Assim, desenvolver protocolos de propagação vegetativa irá contribuir no processo de produção de mudas de prunáceas na região Sul do Brasil. Portanto, o objetivo do presente trabalho foi otimizar a multiplicação e o enraizamento in vitro, bem como a aclimatização das brotações provenientes do meio de enraizamento com o porta-enxerto Mr. S. 2/5 . Para tal, o trabalho foi dividido em dois capítulos, um sobre a multiplicação in vitro e o segundo referente ao enraizamento in vitro e aclimatização. No primeiro capítulo foram testados a composição de sais, o pH do meio de cultura, a fonte e a concentração de carboidrato e a concentração de AIB. No segundo capítulo, objetivou-se avaliar o efeito da concentração de AIB e o tempo de permanência das brotações no meio de cultura, sobre o enraizamento in vitro e a sobrevivência dessas na fase de aclimatização. Na etapa de multiplicação, explantes cultivados em meio MS com pH 5,2 apresentaram o maior número de brotações. Entretanto, a fonte e a concentração de carboidrato não exerceram influência sobre o número e o comprimento das brotações formadas. Já, com relação às concentrações de AIB, meios suplementados com 0,06 mg L-1 apresentaram maior formação de brotações, porém sem influência significativa para o comprimento destas. No que diz respeito à fase de enraizamento in vitro e de aclimatização, brotações cultivadas em meio de cultura com 1,6 mg L-1 de AIB por 12 dias, apresentaram alta percentagem de enraizamento, aproximadamente, 90%, bem como maior percentagem de plantas sobreviventes na fase de aclimatização.
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Lasica, Chrystelle. "Emission rythmique des cercaires de Schistosoma mansoni : du phénotype au(x) gène(s)." Thesis, Perpignan, 2022. https://tel.archives-ouvertes.fr/tel-03924870.
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Schistosoma mansoni est un parasite responsable de la bilharziose. Cette maladie tropicale négligée sévit aussi en Corse depuis 2013. Le cycle de vie du parasite est divisé entre un hôte mammifère où il fait sa reproduction sexuée et un hôte mollusque d'eau douce où il fait une multiplication clonale. La forme du parasite qui infeste le mammifère est la cercaire. L'émission de ces cercaires suit un rythme de 24h dont le pic est calqué sur le pic d'activité aquatique de l'hôte mammifère. Afin de mieux comprendre la transmission des schistosomes vers l'hôte mammifère, les travaux de cette thèse s'intéressent au rythme d'émission des cercaires des chronotypes diurne et nocturne de Schistosoma mansoni. Cette étude est transversale en étudiant le phénomène de rythme des cercaires du phénotype (chronobiologie, histologie) jusqu'aux gènes impliqués (génétique, épigénétique et transcriptomique). Les approches de chronobiologie ont révélé que le rythme d'émission des cercaires s'adapte à l'inversion de photopériode et disparaît en l'absence d'alternance jour/nuit (lumière ou obscurité continue) sans pour autant statuer sur la nature endogène ou exogène de ce rythme. L'approche histologique a dévoilé que, en absence d'alternance jour/nuit, il y a une accumulation de cercaires matures en attente à l'intérieur des sporocystes et un arrêt de la cercariogenèse mettant ainsi en lumière le sporocyste comme autre acteur dans le phénotype du rythme d'émission des cercaires. Au niveau moléculaire, l'association des approches génétique (linkage mapping), épigénétique (ChIPmentation) et transcriptomique (RNA-seq) a montré qu'aucun gène canonique de l'horloge (clock) n'est impliqué. Toutefois les trois approches ont identifié des gènes impliqués dans le mécanisme de phototransduction, avec la rhodopsine comme photorécepteurSchistosoma mansoni is a parasite responsible for bilharzia. This neglected tropical disease has also been prevalent in Corsica since 2013. The life cycle of the parasite is divided between a mammalian host where it does it sexual reproduction and a freshwater snail host where it does clonal multiplication. Cercariae is the parasite form that infests the mammal. The cercariae shedding follows a 24-hour rhythm based on the water activity peak of the mammalian host. In order to enhance the understanding of schistosome transmission to the mammalian host, the work of this thesis focuses on the cercariae shedding rhythm of the diurnal and nocturnal chronotypes of Schistosoma mansoni. This study is transversal by studying the phenomenon of cercariae shedding rhythm from the phenotype (chronobiology, histology) to the genes involved (genetics, epigenetics and transcriptomics). Chronobiology approaches revealed that the cercariae shedding rhythm adapts to photoperiod inversion and disappears in the absence of day/night alternation (continuous light or darkness) without however ruling on the endogenous or exogenous nature of this rhythm. The histological approach revealed that, in the absence of day/night alternation, there is an accumulation of mature cercariae waiting inside the sporocysts and an arrest of cercariogenesis thus highlighting the sporocyst as another actor in the phenotype of the cercarial emission rhythm. At the molecular level, the combination of genetic (linkage mapping), epigenetic (ChIPmentation) and transcriptomic (RNA-seq) approaches showed that no canonical clock gene is involved. However, all three approaches identified genes involved in the phototransduction mechanism with rhodopsin as the photoreceptor
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Jobic, Stéphane. "De la formation de paires x#2 a l'etablissement d'un reseau polymerique x#n dans la famille irx#2 (x=s, se, te) : competition des niveaux de bandes electroniques." Nantes, 1991. http://www.theses.fr/1991NANT2020.
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La determination fine de la structure de irse#2 et de irs#2 a permis de reveler l'origine sterique de l'allongement anormal de la paire chalcogenee, par opposition a l'origine electronique generalement attribuee au meme type de phenomene dans les pyrites sulfurees. A partir des equilibres de charge observees dans ces composes (m#3#+x#2#(x#2)#2##1#/#2, x=s et se), equilibres qui sont en relation directe avec les niveaux relatifs et les configurations electroniques du cation de transition et de ceux de l'anion, le passage aux composes tellures aurait du faire passer les dichalcogenures correspondants directement au mode pyrite. Ce n'est pas le cas pour un certain nombre de phases mte#2 qui preferent conserver une structure type cdi#2, mais avec liaisons polymeriques entre les anions, demontrees par des calculs de population de recouvrement, en relation avec une charge faible et fractionnaire pour le tellure. L'existence de cette sous-famille, mise en evidence comme telle pour la premiere fois, n'est pas la seule surprise rencontree avec les composes mte#2. En effet, si certaines phases presentent bien le modele pyrite qu'on attendrait en suivant une logique basee sur la variation de l'ionicite de la liaison m-x, en fait une seule d'entre elle, mnte#2 s'avere purement pyrite, toutes les autres sont de type pyrite polymerique, avec interactions liantes entre paires comme le montre les calculs de densite electronique au niveau de fermi entre di-anions. Cette seconde sous-famille, qui n'etait pas a ce jour distinguee de son modele ideal, est a ajouter a la precedente. En fait, nous avons montre sur d'autres exemples, non seulement de binaires (crte#3) mais egalement de ternaires tellures (nipdte#5, niptte#5. . . ), que ce comportement est tres general, et qu'il n'y avait pas ete porte jusqu'a present suffisamment d'attention. Sa comprehension est la cle des interpretations magnetiques d
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Costa, Juliana Leles. "Patogenicidade e regulação hormonal na interação Moniliophthora perniciosa x Solanum lycopersicum." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/64/64133/tde-04052018-100645/.
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Moniliophthora perniciosa é o agente causal da doença vassoura-de-bruxa em cacaueiro (Theobroma cacao). Os sintomas da doença compreendem perda de dominância apical, inchamento e excesso de brotações em ramos novos, reversão de meristemas florais em vegetativos, partenocarpia e lesões necróticas em frutos, sugerindo a ocorrência de alterações hormonais no hospedeiro. A disponibilidade de isolados do biótipo-S capazes de infectar o tomateiro, permitiu a utilização da cultivar miniatura \'Micro-Tom\' (MT) como um modelo para estudo da interação Moniliophthora perniciosa x Solanum lycopersicum. Além de provocar sintomas característicos no MT, a disponibilidade de mutantes e linhas transgênicas introgredidos em MT, com alterações que afetam o metabolismo e sensibilidade hormonal, permitem investigar o papel dos hormônios vegetais no desenvolvimento dos sintomas. Inicialmente, foi avaliada a agressividade de três isolados do biótipo-S no MT, sendo que um isolado de Tiradentes apresentou maior agressividade, com maior incidência dos sintomas, maior engrossamento do caule, redução na altura das plantas, aumento no número de lóculos nos frutos e redução na biomassa radicular. Mutantes com alterações na percepção para auxina (diageotropica e entire) e uma linha transgênica expressando uma citocinina oxidase de Arabidopsis (35S::AtCKX2) diferiram para o engrossamento do caule e distribuição do número de lóculos nos frutos em relação ao MT. A linha transgênica 35S::AtCKX2 diferiu significativamente de MT com menor incidência de infecção. O engrossamento do caule associa-se ao aumento na área do córtex e, principalmente do xilema e floema. A aplicação exógena de citocinina sintética benzil-adenina (BA) e da auxina sintética ácido naftaleno acético (ANA) em MT evocam sintomas similares aos de plantas infectadas com M. perniciosa. Linhas transgênicas repórter de sinalização por citocinina (ARR5::GUS) ou auxina (DR5::GUS) indicaram sinalização diferencial por citocinina a 24 h e 36 h após inoculação (HAI) e 48 HAI por auxina. A infecção por M. perniciosa aumentou os níveis de ácido jasmônico, ácido salicílico (AS) e auxina em MT entre 5 d a 30 DAI, com maior incremento aos 5 DAI, enquanto que o nível de ácido abscísico aumentou aos 20 d e 30 DAI, e AS foi o único detectado em micélio dicariótico do biótipo-S. Genes de biossíntese de citocinina (IPT), ativação (LOG), degradação (CKX) e resposta à citocinina (ARRs e CRF) e auxina (AUX/IAA, ARFs, SAUR e GH3) foram induzidos em MT inoculado de 12 h a 5 DAI, mas com maior acúmulo de transcritos aos 30 DAI. M. perniciosa induziu maior expressão desses genes citados e de biossíntese auxina, nos momentos iniciais da interação (12 h a 5 DAI) em 35S::AtCKX2 do que no MT. O efeito da infecção em aumentar o número de lóculos nos frutos parece ser independente ou downstream a mutação fasciated, Mouse ears e ovate. A mutação Lanceolate parece ter um papel na redução do efeito da infecção em aumentar o número de lóculos. Os resultados obtidos sugerem que a infecção pelo M. perniciosa em MT altere os níveis/sinalização dos hormônios vegetais, principalmente auxina e citocinina, provocando o engrossamento do caule (aumento no xilema, floema e córtex), redução no crescimento e na biomassa radicular e aumento no número de lóculos nos frutosMoniliophthora pernicisa is the causal agent of witches\' broom disease in cocoa (Theobroma cacao). The disease symptoms comprise loss of apical dominance, thickening and proliferation of axillary shoots, shift from inflorescence into vegetative meristem, parthernocarpy and necrotic lesions on fruits, suggesting a host hormonal imbalance. The availability of an isolated of S-biotype M. perniciosa, which colonizes tomato, enabled the utilization of the miniature tomato (Solanum lycopersicum) cultivar \'Micro-Tom\' (MT) as a suitable model to study the pathosystem M. perniciosa x S. lycopersicum. In addition to the characteristic symptoms of the infection in MT, the availability of mutants and transgenic lines introgessed into MT, with changes in plant metabolism and hormonal sensitivity, enable the investigation of the role of plant hormones in the development of symptoms. Initially, we evaluated the aggressiveness of three S-biotype M. perniciosa isolates. The isolate \'Tiradentes\' showed greater aggressiveness infecting MT, with higher plant infection incidence, greater stem thickening, reduction in plant height, increase in fruit locule number and reduction in root dry weight. Mutants with altered auxin perception (diageotropica e entire) and the transgenic line expressing a cytokinin oxidase gene of arabidopsis (35S::AtCKX2) differed in stem thickening and fruit locule number distribution, as compared to MT. The transgenic line 35S::AtCKX2 differed significantly from MT, showing lower incidence of infection. The thickening of the stem may be related with an increase in area of the cortex, especially xylem and phloem. The exogenous application of synthetic cytokinin benzyl adenine (BA) and auxin naphthalene acetic acid (NAA) in MT induces similar symptoms to plants infected with M. perniciosa. Cytokinin (ARR5::GUS) and auxin (DR5::GUS) signaling reporter transgenic lines revealed differential cytokinin signaling 24 h e 36 h hours after inoculation (HAI) and differential auxin signaling in 48 HAI. Infection of MT by M. perniciosa increased the content of JA, SA and auxin during the development of symptoms from 5 d to 30 DAI, with greater increase at an early stage of symptoms development (5 days after inoculation - DAI), whereas abcisic acid content increased in 20 and 30 DAI, and only AS was detected in dicariotic mycelium of the S-biotype M. perniciosa. Cytokinin biosynthesis (IPT), activating (LOG), and breakdown (CKX) genes and response to cytokynin genes (ARRs e CRF) and auxin (AUX/IAA, ARFs, SAUR e GH3) were induced in MT infected in 12 h a 5 DAI, with greater accumulation of transcripts in 30 DAI. M. perniciosa induced higher levels of IPT, LOG, CKX, ARRs, and CRF genes and auxin biosynthesis genes at an ealry stage of infection (12 h a 5 DAI) in 35S::AtCKX2, as compared to MT. The effect of the infection on increasing fruit locule number seems to be independent or downstream fasciated, Mouse ears and ovate mutation. Lanceolate mutation seems to play a role in reducing M. perniciosa ability of increasing fruit locule number. The results suggest infection of MT by S-biotpye M. perniciosa alters levels/signaling of the hormones, especially auxin and cytokinin, inducing stem thickening (increasing xylem, phloem and cortex), reduction in plant height, root dry weight and increase in fruit locule number
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Cai, Liuchun. "Molecular Structure of Ga2S3)x(GeS2 )1-x Glasses by Raman Scatteringand T-Modulated DSC." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1057759838.
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Knebusch, Julien. "L'ouverture au(x) monde(s) dans la poésie française au début du XXe siècle." Thesis, Paris 3, 2010. http://www.theses.fr/2010PA030111.
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Cette thèse étudie l’émergence d’une poétique de la diversité qui s’apparente à un parcours élargi et diversifié du monde dans les trois premières décennies du siècle et ce, de façon interdisciplinaire en associant histoire, géographie et poétique. Le corpus concerne au moins deux générations [1880 et 1900] et regroupe un large ensemble de poètes, connus ou oubliés [Saint- John Perse, Levet], dont l’œuvre n’a pas encore fait l’objet d’études approfondies [Larbaud, Supervielle, Morand, Romains] ou demeure inconnue [Durtain, Levet, Brauquier, Nau, par exemple]. La thèse montre que les poètes, interagissant avec un contexte à la fois politique, culturel et littéraire, prennent le monde comme un espace-temps et visent à la fois la diversité et l’unité du monde qu’ils tentent de comprendre dans une dynamique et une tension créatrice avec le « Divers ». La thèse interroge notamment la géographie littéraire de cette dynamique d’extraversion en se concentrant sur le référent et en travaillant aussi l’espace comme une modalité d’un rapport au monde, ce qui permet alors de faire apparaître une géopoétique du parcours du monde renouvelant les formes littéraires en les faisant dialoguer avec les formes de l’espace, ainsi qu’une géocritique des images du monde qui se construisent diversement, en accentuant les lieux, les parcours ou les paysages, lesquels peuvent prendre des formes internationales. Cet angle d’approche des textes poétiques permet de réévaluer le cosmopolitisme et la culture internationale de ces écrivains qui ont tenté par diverses voies de concilier l’ouverture à la diversité et l’exigence de l’unité du monde ainsi que celle de l’ancrage dans des lieux et une culture donnéeThis dissertation explores the emergence of a poetics of diversity through an analysis of large and diversified journeys into the world during the first three decades of the 20th century by proceeding in an interdisciplinary way that combines history, geography, and poetics. The corpus concerns at least two generations of poets [1880 and 1900] that comprise a large ensemble of both well-known and unknown poets [such as Saint-John Perse and Levet] whose work hasn’t yet been studied deeply [Larbaud, Nau, Supervielle, Morand, Romains] or remains largely unknown to us [Durtain, Levet, Brauquier, Nau, for example]. The dissertation shows that these poets, interacting within a political, cultural, and literary context, understand the world as a global space-time and open themselves to its diversity, attempting to comprehend it in a creative tension with the « Divers ». The dissertation interrogates the literary geography of this dynamic of extroversion by concentrating on the referent and by exploring space as a modality of a relationship to the world, which makes it possible to render visible a geopoetics of journeys through the world, renewing literary forms by putting them into dialogue with geographical forms, as well as allowing a geocritique of images of the world, diversely constructed by accentuating places, journeys, or landscapes which may become international. Approaching the poem in this way allows one to reevaluate the cosmopolitanism and international culture of these poets who tried, in various ways, to conciliate openness to diversity, rootedness in places and a give culture as well as demand for world unity
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Winstead, Michael. "Translation of L and S Band Tracking Assets to X Band High Dynamic Testing." International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/603933.
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ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, CaliforniaRecent Constraints on the use of L and S band spectrum led to the search for additional Frequency Domain Bandwidth augmentation for test range telemetry needs. The ITU (International Telecommunications Union) approved X band region is listed as 7000 MHz to 8500 MHz for telemetry space applications. Bandwidth is available within this domain subject to the WARC (World Administrative Radio Consortium) approvals. This paper describes tests and presents results illustrating methodology that is available, and which can be used for conversion of S-band assets to the X band spectral region.
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Guérin, A., G. Lesthievent, and J. L. Issler. "Telemetry Architectures for Future Earth Observation Missions: Over 1 Gbit/s in X-Band." International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/605933.
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ITC/USA 2010 Conference Proceedings / The Forty-Sixth Annual International Telemetering Conference and Technical Exhibition / October 25-28, 2010 / Town and Country Resort & Convention Center, San Diego, CaliforniaHigh data rate payload telemetry of Earth Observation missions is classically done in the Earth Exploration Satellite (EES) X-band (8025-8400 MHz) with current max data rates about 600 Mbit/s. While higher frequency bands are often considered to offer higher data rates, this paper deals with on-board architectures that would allow data transmission at more than 1 Gbit/s in X-Band. It presents these new architectures based on spectrally efficient transmission systems and on simultaneous bipolarization transmission, their designs and their performances. Variable Coding and Modulation techniques are described. Interference between channels in cross-polarization is also evaluated.
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Rakauskas, Fábio. "Estado x Mercado: planejamento em Săo Bernardo do Campo - 1964 a 2006." Universidade Presbiteriana Mackenzie, 2012. http://tede.mackenzie.br/jspui/handle/tede/294.
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Previous issue date: 2012-02-13This work has as its central focus analyzing the evolution of urban planning in the municipality of São Bernardo do Campo from a historical survey of the main urban laws that structured the city between 1964 and 2006. This analysis is realized with an initial deployment of the Anchieta highway and therefore the arrival of new industry in the early 1950s, when the city began a rapid process of urbanization. In this sense, the administration has new tools for urban control in view of the new dynamic. Initially the instruments were off and disconnected, and only at the beginning of the 1960s developed the first Master Plan of the municipality. Rapid urbanization and the impact of the industry showed the need for an urban management tool with greater agility. In this sense was developed between 1974 to 1977, the Integrated Development Plan of the City (PDIM), with innovative concepts and plans for interventions of short, medium and long term, linked to the newly created Progressive São Bernardo do Campo S.A. (PRO-SBC ), which acted as a mixed economy company, managing the procedures for interventions in the city. The repeal of PDIM and the urban, economic and productive during the 1980s, Sao Bernardo do Campo led to a chaotic urban structure. The creation of the Intermunicipal Consortium of the Greater ABC was born in the early 1990s in order to equalize the problems that affected both the city and the region of the ABC. In 2006 approved the first master plan supervised by the City Statute, but with indices intensive land use and therefore with great saturamento problems of infrastructure and road system. With the understanding of urban planning and understanding of the evolution of urban structure in the city, initially influenced by industrialization, it was possible to understand the current urban landscape of São Bernardo do Campo. Moreover, the historical repertory-urban organized this research may help in future works prepared by the local public administration.
Este trabalho tem como foco central analisar a evolução dos Planejamento Urbano no município de São Bernardo do Campo a partir de um levantamento histórico das principais legislações urbanísticas que estruturaram a cidade entre 1964 e 2006. Esta análise é compreendida inicialmente com a da implantação da rodovia Anchieta e, consequentemente, da chegada da nova indústria no início dos anos 1950, quando a cidade iniciou um acelerado processo de urbanização. Neste sentido, a administração passou criar novos instrumentos de controle urbano em vista da nova dinâmica. Inicialmente os instrumentos eram pontuais e desarticulados, sendo apenas no início da década de 1960 elaborado o primeiro Plano Diretor do município. A urbanização acelerada e o impacto da indústria mostraram a necessidade de um instrumento gestão urbana com maior agilidade. Neste sentido foi elaborado, entre 1974 a 1977, o Plano de Desenvolvimento Integrado do Município (PDIM), com conceitos inovadores e planos de intervenções de curto, médio e longo prazo, articulado à recém criada Progresso São Bernardo do Campo S.A. (PRO-S.B.C.), que atuava como empresa de economia mista, gerindo os procedimentos de intervenções na cidade. A revogação do PDIM e as transformações urbanas, econômicas e produtivas, durante a década de 1980, levou São Bernardo do Campo à uma estrutura urbana desordenada. A criação do Consórcio Intermunicipal do Grande ABC nasceu no início da década de 1990 a fim de equalizar os problemas que atingiam tanto a cidade como a região do ABC. Em 2006 aprovou-se o primeiro Plano Diretor orientado pelo Estatuto da Cidade, porém com índices intensivos de aproveitamento do solo, e consequentemente com grandes problemas de saturamento da infraestrutura e do sistema viário. Com a compreensão do planejamento urbano da cidade e o entendimento da evolução da estrutura urbana do município, influenciado inicialmente pela industrialização, foi possível entender o atual cenário urbano de São Bernardo do Campo. Além disso, o repertório histórico-urbano organizado nesta pesquisa poderá contribuir nos futuros trabalhos elaborados pela administração pública local.
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Silva, Leonardo Corrêa da. "Caracterização fenotípica de RIL s de feijão derivadas da população Rudá x AND 277." Universidade Federal de Viçosa, 2013. http://locus.ufv.br/handle/123456789/4619.
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Previous issue date: 2013-07-16Conselho Nacional de Desenvolvimento Científico e Tecnológico
Recombinant inbred lines (RIL s) are useful for building linkage maps. The maintainance the population genetic structure for mapping over their production is important for the construction of accurate maps. The existence of genetic variability within those populations is essential for detection of the association between molecular markers and controlling loci of quantitative or qualitative traits. Thus, the objective of this work was to quantify the diversity of a RIL population derived from Rudá x AND 277 cross. Five hundred plants from the F2 population of Rudá x AND 277 cross were conducted up to the F10 generation by the single seed descent method (SSD) to obtain those RIL s. Then, a group of 393 RIL's plus the parents and five control plants were evaluated in the field in a 20 x 20 triple lattice design, for seven quantitative traits. Because of the low efficiency of the lattice, the data were analyzed in randomized blocks with additional treatments (parents) with three replications. The five controls were eliminated from this analysis. The 393 RIL s and parents were characterized in the greenhouse for their reaction resistance to breeds 65 and 89 of Colletotrichum lindemunthianum, the causal agent of anthracnose. The effect of RIL s was significant for all traits evaluated (P < 0.01), indicating the existence of genetic variability in such population. The RIL s vs parents contrast was significant for number of days to flowering (DF) and to harvest (DC), grain yield (PROD) and weight of one hundred grains (M100) and not significant for architecture of plants (ARQ), degree of seed flattening (H) and seed shape (J). Significance of these contrasts indicates that the mean of RIL's differs from that of the parents. Coincidence between these means is expected only in the absence of epistasis. Thus, these results indicate the occurrence of additive x additive epistatic interactions for DF, DC, PROD and M100. The low values of the coefficient of experimental variation obtained indicate good precision of the experiment. Values of heritability ranged from 82.81 to 97.09%. In relation to breeds 65 and 89 of anthracnose, it was observed a 3:1 (resistant: susceptible) and 1:1 segregations respectively in the population of 393 RIL s, indicating the maintenance of genetic structure of such RIL s. The characters that formed the lowest and the highest number of groups of means were ARQ and M100, four and ten groups, respectively, by the Skott-Knott test at 5% probability. The 393 RIL s were grouped by Tocher method in 10 groups and the characters that most contributed to the genetic dissimilarity were M100 and DF, while ARQ was the character that contributed the least. The population made up by 393 RIL s present genetic variability for all traits, which is essential for detecting associations with molecular markers and genetic mapping.
Linhagens endogâmicas recombinantes (Recombinante Imbred Lines - RIL s) são de utilidade na construção de mapas de ligação. A manutenção da estrutura genética das populações para o mapeamento ao longo de sua obtenção é importante para a construção de mapas acurados. A existência de variabilidade genética nessas populações é fundamental para a detecção da associação entre marcadores moleculares e locos controladores de caracteres qualitativos ou quantitativos. Assim, o objetivo deste trabalho foi quantificar a diversidade de uma população de RIL s derivadas do cruzamento entre os genitores Rudá e AND 277. Na obtenção destas RIL s, 500 plantas F2 do cruzamento Rudá x AND 277 foram conduzidas até a geração F10 pelo método do descendente de uma única semente (Single Seed Descent - SSD). Em seguida, um grupo de 393 RIL s mais os genitores e cinco testemunhas foi avaliado em campo no delineamento látice triplo 20 x 20, quanto a sete caracteres quantitativos. Dada a baixa eficiência do látice, os dados foram analisados em blocos casualizados com testemunhas adicionais (genitores) e três repetições. As outras cinco testemunhas foram eliminadas dessa análise. As 393 RIL s e os genitores foram caracterizados quanto à reação de resistência às raças 65 e 89 de Colletotrichum lindemuthianum, causador da antracnose do feijoeiro, em casa-de- vegetação. Observou-se significância do efeito de RIL s para todos os caracteres avaliados (P < 0,01), indicando a existência de variabilidade genética nessa população. O contraste RIL s vs. Genitores foi significativo (P < 0,01) para os caracteres número de dias ao florescimento (DF) e à colheita (DC), produtividade de grãos (PROD) e massa de cem grãos (M100) e não significativo para a arquitetura de plantas (ARQ), grau de achatamento da semente (H) e forma da semente (J). A significância desses contrastes indica que a média das RIL s difere da média dos genitores. Igualdade entre as médias das RIL s e dos genitores é esperada apenas na ausência de epistasia. Assim, estes resultados indicam a ocorrência de interações epistáticas do tipo aditiva x aditiva para os caracteres DF, DC, PROD e M100. Os baixos valores do coeficiente de variação experimental obtidos indicam boa precisão do experimento. Os valores da herdabilidade variaram de 82,81 a 97,09%. Em relação às raças 65 e 89 de antracnose observou-se segregação de 3:1 (resistentes:suscetível) e de 1:1, respectivamente, na população de 393 RIL s, indicando manutenção da estrutura genética destas RIL s. Pelo teste de Skott-Knott, a 5% de probabilidade, os caracteres que formaram menor e maior número de grupos de médias foram ARQ e M100, com quatro e dez grupos cada, respectivamente. As 393 RIL s foram agrupadas pelo método de Tocher em 10 grupos e os caracteres que mais contribuíram para a dissimilaridade genética foram M100 e DF, e o que menos contribuiu foi ARQ. A população constituída de 393 RIL s apresenta variabilidade genética para todos os caracteres avaliados, imprescindível para detecção de associações com marcas moleculares e mapeamento genético.
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Emele, Lukas. "Entwurf der Antennen für das Mars-Raumfahrzeug P5A für das S- und X-Band." [S.l. : s.n.], 2005. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB12168057.
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