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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

Synthetic spectra of massive stars as tool for the spectral analysis of stars and stellar clusters

Hoffmann, Tadziu. Unknown Date (has links) (PDF)
University, Diss., 2004--München. / Enth. 5 Sonderabdr. aus verschiedenen Publ.
52

Representations for understanding the Stern-Gerlach effect /

Stenson, Jared R., January 2005 (has links) (PDF)
Thesis (M.S.)--Brigham Young University. Dept. of Physics and Astronomy, 2005. / Includes bibliographical references (p. 113-115).
53

Im Spiegel der Form stilkritische Wege zur Deutung von Stefan Georges Maximindichtung.

Aler, Jan. January 1947 (has links)
Proefschrift--Amsterdam. / The first part of the author's Studien in Stefan Georges Maximindichtung. Issued also without thesis note. "Stellungen": leaf inserted. "Der Stern des Bundes [von Stefan George]" ([14] p. 27 cm.) fold. in pocket. Bibliography: p. [303]-304.
54

Moos, Störfall und abruptes Ende

Jambon, Sabine. January 1999 (has links)
Düsseldorf, Universiẗat, Diss., 2000. / Dateiformat: zip, Dateien in unterschiedlichen Formaten.
55

Selbstkonsistente Modelle strahlungsdruckgetriebener Winde heißer Sterne unter Mitberücksichtigung der Rotation

Petrenz, Peter. Unknown Date (has links)
Universiẗat, Diss., 1999--München.
56

Investigação química de complexos de coordenação dos antibióticos enrofloxacina e norfloxacina combinados ao íon Ru(III) e suas interações com biomoléculas alvo / Chemical Investigation of coordination compounds with enrofloxacin and norfloxacin antibiotics combined to Ru (III) ion and their interations with target biomolecule.

Reis, Felipe Costa Claro 28 July 2014 (has links)
Este trabalho tem como objetivo sintetizar e caracterizar um novo complexo mononuclear de rutênio (III) e enrofloxacina (enro, fármaco antibacteriano da família das fluoroquinolonas), [Ru(enro)3].nH2O. Foram testadas várias rotas sintéticas e apenas a partir de uma delas obteve-se o composto desejado. O produto foi caracterizado pelas técnicas espectroscópicas de absorção na região do UV-visível e do infra-vermelho. Através desta última técnica foi possível determinar o modo pelo qual a enrofloxacina se coordena ao íon rutênio: a coordenação ocorre de modo bidentado através do oxigênio da piridona e do oxigênio do grupamento carboxilato. Outro objetivo deste trabalho foi investigar a interação do complexo mononuclear de rutênio (III) e norfloxacina, [Ru(nor)3].nH2O, com a albumina de soro humano (HSA), através da técnica de luminescência. Mais especificamente pelo estudo da supressão da luminescência dos resíduos de triptofano, aplicando-se o modelo de tratamento da supressão bimolecular de Stern-Volmer. O estudo de supressão de fluorescência mostrou, por meio de espectros de emissão da HSA, que com o aumento da concentração do complexo [Ru(nor)3].nH2O na solução de HSA, ocorre uma redução gradual da luminescência da HSA, devido a alterações da conformação da proteína, que sugerem alteração do microambiente próximos aos resíduos de triptofano. A partir do tratamento dos dados pode-se determinar tanto K_sv quanto a constante cinética do processo de supressão, que mostraram uma dependência com a temperatura sugerindo como mecanismo predominante de supressão o mecanismo dinâmico. Porém essa conclusão foi revista a partir da determinação dos tempos de vida do estado excitado da HSA, e pode-se concluir que o mecanismo predominante à temperatura ambiente é o mecanismo estático, porém com o aumento da temperatura ocorre a predominância do mecanismo do tipo dinâmico. Através da determinação dos parâmetros termodinâmicos, concluiu-se que as interações entre a HSA e o complexo são espontâneas, e forças de van der Waals e ligações de hidrogênio estão envolvidas na ligação entre a HSA e o supressor. / This work aims to synthesize and characterize a new mononuclear ruthenium (III) complex and enrofloxacin (enro, antibacterial drug of the fluoroquinolone family), [Ru(enro)3].nH2O. Several synthetic routes were tested, but only from one of them it was obtained the desired compound. The product was characterized by spectroscopic techniques of absorption in UV-visible and infra-red regions. Through this last technique, it was possible to determine the coordination mode of enrofloxacin to the ruthenium ion: the coordination occurs in a bidentate way through the pyridone oxygen and the oxygen of the carboxylate group. Another aim of this study was to investigate the interaction of mononuclear ruthenium (III) complex and the norfloxacin, [Ru(nor)3].nH2O, with the human serum albumin (HSA), through the technique of luminescence. More specifically, by the study of the quenching of luminescence of tryptophan residues, by applying the Stern-Volmers model of treatment of bimolecular suppression. The fluorescence quenching study showed, through the emission spectra of HSA, that increasing the complex concentration in HSA solution, there is a gradual reduction of the luminescence of HSA, due to the conformational changes of the protein that suggests the change of microenvironment near tryptophan residues. From the data processing it is possible to determine both K_sv and the kinetic constant of the suppression process, which showed temperature dependence, suggesting as the predominant mechanism of quenching the dynamic mechanism. However, this conclusion has been revised from the determination of the lifetimes of the excited state of HSA, and it can be concluded that the predominant mechanism at room temperature is the static mechanism, but with the temperatures increase, it occurs the predominance of the dynamic type mechanism. By determining the thermodynamic parameters, it was concluded that the interactions between HSA and the complex are spontaneous, and Van der Waals forces and hydrogen bonds are involved in the binding between HSA and suppressor.
57

Investigação química de complexos de coordenação dos antibióticos enrofloxacina e norfloxacina combinados ao íon Ru(III) e suas interações com biomoléculas alvo / Chemical Investigation of coordination compounds with enrofloxacin and norfloxacin antibiotics combined to Ru (III) ion and their interations with target biomolecule.

Felipe Costa Claro Reis 28 July 2014 (has links)
Este trabalho tem como objetivo sintetizar e caracterizar um novo complexo mononuclear de rutênio (III) e enrofloxacina (enro, fármaco antibacteriano da família das fluoroquinolonas), [Ru(enro)3].nH2O. Foram testadas várias rotas sintéticas e apenas a partir de uma delas obteve-se o composto desejado. O produto foi caracterizado pelas técnicas espectroscópicas de absorção na região do UV-visível e do infra-vermelho. Através desta última técnica foi possível determinar o modo pelo qual a enrofloxacina se coordena ao íon rutênio: a coordenação ocorre de modo bidentado através do oxigênio da piridona e do oxigênio do grupamento carboxilato. Outro objetivo deste trabalho foi investigar a interação do complexo mononuclear de rutênio (III) e norfloxacina, [Ru(nor)3].nH2O, com a albumina de soro humano (HSA), através da técnica de luminescência. Mais especificamente pelo estudo da supressão da luminescência dos resíduos de triptofano, aplicando-se o modelo de tratamento da supressão bimolecular de Stern-Volmer. O estudo de supressão de fluorescência mostrou, por meio de espectros de emissão da HSA, que com o aumento da concentração do complexo [Ru(nor)3].nH2O na solução de HSA, ocorre uma redução gradual da luminescência da HSA, devido a alterações da conformação da proteína, que sugerem alteração do microambiente próximos aos resíduos de triptofano. A partir do tratamento dos dados pode-se determinar tanto K_sv quanto a constante cinética do processo de supressão, que mostraram uma dependência com a temperatura sugerindo como mecanismo predominante de supressão o mecanismo dinâmico. Porém essa conclusão foi revista a partir da determinação dos tempos de vida do estado excitado da HSA, e pode-se concluir que o mecanismo predominante à temperatura ambiente é o mecanismo estático, porém com o aumento da temperatura ocorre a predominância do mecanismo do tipo dinâmico. Através da determinação dos parâmetros termodinâmicos, concluiu-se que as interações entre a HSA e o complexo são espontâneas, e forças de van der Waals e ligações de hidrogênio estão envolvidas na ligação entre a HSA e o supressor. / This work aims to synthesize and characterize a new mononuclear ruthenium (III) complex and enrofloxacin (enro, antibacterial drug of the fluoroquinolone family), [Ru(enro)3].nH2O. Several synthetic routes were tested, but only from one of them it was obtained the desired compound. The product was characterized by spectroscopic techniques of absorption in UV-visible and infra-red regions. Through this last technique, it was possible to determine the coordination mode of enrofloxacin to the ruthenium ion: the coordination occurs in a bidentate way through the pyridone oxygen and the oxygen of the carboxylate group. Another aim of this study was to investigate the interaction of mononuclear ruthenium (III) complex and the norfloxacin, [Ru(nor)3].nH2O, with the human serum albumin (HSA), through the technique of luminescence. More specifically, by the study of the quenching of luminescence of tryptophan residues, by applying the Stern-Volmers model of treatment of bimolecular suppression. The fluorescence quenching study showed, through the emission spectra of HSA, that increasing the complex concentration in HSA solution, there is a gradual reduction of the luminescence of HSA, due to the conformational changes of the protein that suggests the change of microenvironment near tryptophan residues. From the data processing it is possible to determine both K_sv and the kinetic constant of the suppression process, which showed temperature dependence, suggesting as the predominant mechanism of quenching the dynamic mechanism. However, this conclusion has been revised from the determination of the lifetimes of the excited state of HSA, and it can be concluded that the predominant mechanism at room temperature is the static mechanism, but with the temperatures increase, it occurs the predominance of the dynamic type mechanism. By determining the thermodynamic parameters, it was concluded that the interactions between HSA and the complex are spontaneous, and Van der Waals forces and hydrogen bonds are involved in the binding between HSA and suppressor.
58

Decoerência em uma experiência de Stern-Gerlach dissipativa

Oliveira, Thiago Rodrigues de 09 September 2004 (has links)
Orientador: Amir Ordacgi Caldeira / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin / Made available in DSpace on 2018-08-04T01:41:57Z (GMT). No. of bitstreams: 1 Oliveira_ThiagoRodriguesde_M.pdf: 7229972 bytes, checksum: df8825145d26326f700bc04d2d767b90 (MD5) Previous issue date: 2004 / Resumo: Não informado / Abstract: Not informed. / Mestrado / Física Estatística / Mestre em Física
59

Die vroulike beginsel in die kuns van Irma Stern

30 July 2015 (has links)
M.A. (Fine Arts) / The predominant artistic motif in the art of Irma Stern is the fecale figure. Stern prefers certain "types" of females in her art - that of young girls, of adolescents, of female workers, of nudes, of brides, of mature women and of mothers. This dissertation aims to show that these different motifs are not isolated, but rather interrelated to elicit a holistic symbolic syntax in the art of Stern. The symbolic relevance is extended with regard to her personalized world and with regard to the world around her. In Chapter 1 the female figure is analysed in terms of its forma7 qualities and the types of motifs in the art of Stern are juxtaposed with the characteristic types of motif preferred by the German Expressionists. It is noted that the female figure in the art of Stern is closely associated with the cultivation of the land - so much so that a cycle emerges which includes such activities as planting, bearing fruit and harvestirg. Other motifs such as young girls, adolescents and mature women indicate a cycle in the physiological as well as psychic development of the female. In Chapter 2 the symbolic meaning of the motifs is discussed in terms of the cultivation cycle of the land and the cycle tracing the deveThpment of the female. A corollary is also established between the female's role in the cultivation of the land and the female's own development. Chapter 3 examines the symbolic relevance of the art of Stern in terms of her ontogenetic development as human being in relation to society and in terms of the phylogenetic development of society itself. The relevance of the female principle in the art of Stern is evauated in terms of the above approach in the final chapter.
60

PSPの低圧力域における基礎特性に関する研究

新美, 智秀, NIIMI, Tomohide, 吉田, 昌記, YOSHIDA, Masaki, 近藤, 誠, KONDO, Makoto, 大島, 佑介, OSHIMA, Yusuke, 森, 英男, MORI, Hideo, 江上, 泰広, EGAMI, Yasuhiro, 浅井, 圭介, ASAI, Keisuke, 西出, 宏之, NISHIDE, Hiroyuki 12 1900 (has links)
No description available.

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