Zugl.: Hamburg, Univ., Diss., 2005 u.d.T.: Wegner, Gerd: Zur zeitgenössischen und nachwirkenden Bedeutung der aus wirtschaftlichen Interessen Hamburgs von Johann Anderson (1674 - 1743) zusammengestellten naturwissenschaftlichen Erkenntnisse aus der nordatlantischen Region

Thesis (Ph. D.)--University of Wisconsin--Madison, 1962. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--University of Wisconsin--Madison, 1962. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves [153]-155).

Potsdam, University, Diss., 2003.

Universiẗat, Diss., 2003--Dortmund.

Made available in DSpace on 2018-07-27T17:13:43Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-08-20. Added 1 bitstream(s) on 2018-07-27T17:16:35Z : No. of bitstreams: 1 000887128.pdf: 820215 bytes, checksum: a44d35b16e5acd18e2a270740361af08 (MD5) / A tese a seguir versa sobre determinado tipo de marxismo inglês, a atividade político-editorial de Perry Anderson e o jornalismo integral da revista de ideias NEW LEFT REVIEW. A hipótese diretiva é de que a milieu da assim-chamada segunda geração desta New Left elaborou um gênero de «Marxismo-Mundo»internacionalista nos anos das barricadas (Tariq Ali) da Europa Ocidental. O fazimento histórico deste projeto intelectual inserido em sua formação cultural é um processo social que alentou a uma coetânea e coextensiva atividade de mediação com um duplo caráter: i) a forma-tradução, ou, a insularização / particularização / nacionalização da cultura socialista continental (França/Alemanha/Itália/Rússia) nas Ilhas (Inglaterra) e, daí, ii) a forma-jornalismo, i.e., a sua continentalização / universalização / internacionalização de um tipo sui generis de marxismo, consubstanciado a partir dum nexo identidade-diversidade entre local e global. Os contrastes e as conclusões bem como as predições e os desempenhos lidam necessariamente com a gênese, devir e metamorfoses de historiadores de processos sociais e críticos de ideias tais como Edward Palmer Thompson, Raymond Henry Williams e Eric John Hobsbawm vis-à-vis o grupo intelectual de Perry Anderson / Robin Blackburn / Tom Nairn. Uma história a contrapêlo (Walter Benjamin) impõe o repto de desvelar a consciência autoadjudicada que fez da cultura socialista medíocre e inerte, da Grã-Bretanha, a mais viva República das Letras do marxismo contemporâneo do último quartel do Séc. XX. O aforisma «Pessimismo/Otimismo» refletiu/refratou a história da NLR: além do senso comum político e aquém da alta abstração teórica cabe restituir o prisma da NLR em si à luz do tempo histórico. Uma revalorização da trilogia... - (Resumo completo, clicar acesso eletrônico abaixo) / The following thesis deals with a certain kind of English Marxism, political-editorial activity of Perry Anderson and the integral journalism of the journal of ideas NEW LEFT REVIEW. Its conductive hypothesis is that the milieu of the so-called second generation of this New Left produced a genre of an internationalist «World-Marxism» in the street-fighting years (T. Ali) of Western Europe. The historical making of this intellectual project inserted in its cultural formation is a social process that gave birth to a coeval and coextensive doubledcharacter mediation activity: i) translation-form, i.e., insularization / particularization / nationalization of a continental socialist culture (France/Germany/Italy/Russia) in the Islands (UK) and, hence, ii) the journalism-form, or, its continentalization / universalization / internationalization of a sui generis kind of Marxism, consubstantieted in a nexus of identitydiversity on local and global. The contrasts and conclusions and predictions and performances necessarily deals with the genesis, development and metamorphosis of historians of social processes and critics of ideas such as Edward Palmer Thompson, Raymond Henry Williams and Eric John Hobsbawm vis-à-vis the intellectual group of Perry Anderson, Robin Blackburn & Tom Nairn. A history against the grain (W. Benjamin) imposes us the challenge of unrevealing the adjudicated consciousness that made the mediocre and inert socialist culture of Great-Britain the Liviest Republic of Letters of Contemporary Marxism in the last quarter of the Twentieth Century. The aphorism of «Pessimism/Optimism» reflected/refracted the history of NLR: beyond political common sense and before theoretical high abstraction is in order to repair the prism of NLR itself at the light of historical time. A critical revaluation of the ... - (Complete abstract click electronic access below)

Orientador: George G. Kleiman / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Fisica "Gleb Wataghin" / Made available in DSpace on 2018-07-21T14:13:45Z (GMT). No. of bitstreams: 1 Pepino_RafaelTristao_M.pdf: 1853958 bytes, checksum: eb309ed9590b91bfe45aab7414eab0db (MD5) Previous issue date: 1995 / Resumo: Calculamos a probabilidade de ionizar ou neutralizar um átomo interagindo com uma superfície sólida. O Hamiltoniano de Anderson foi utilizado para a descrição da parte eletrônica do sistema átomo-superfície, e o movimento atômico foi tratado classicamente (aproximação de trajetória). Em particular, estudamos a influência da função D (¶ ), que combina potencial de interação e densidade de estados eletrônicos na superfície. Outros parâmetros importantes são as energias do nível de Fermi e do estado atômico e a trajetória do átomo. Os resultados mostram que a transferência de carga depende fortemente da forma de D (¶) / Abstract: We have calculated the probability of ionizing or neutralizing an atom interacting with a solid surface. The Anderson Hamiltonian was used to describe the electronic part of the atom-surface system, and the atomic movement was treated classically (trajectory approximation). In particular, we have studied the inf1uence of the function D ( ¶ ) , a combination of interaction potential and density of electronic states in the surface. Others important parameters are the energies of the Fermi level and of the atomic state, and the atomic trajectory .The results show a strong dependence of the charge transfer on the shape of D( ¶ ) / Mestrado / Física / Mestre em Física

Computational techniques were employed to investigate pathways that would improve the properties and characteristics of transition metal (i.e., ruthenium) catalysts, and to explore their mechanisms. The studied catalytic pathways are particularly relevant to catalytic hydroarylation of olefins. These processes involved the +2 to +3 oxidation of ruthenium and its effect on ruthenium-carbon bond strengths, carbon-hydrogen bond activation by 1,2-addition/reductive elimination pathways appropriate to catalytic hydrogen/deuterium exchange, and the possible intermediacy of highly coordinatively unsaturated (e.g., 14-electron) ruthenium complexes in catalysis. The calculations indicate a significant decrease in the Ru-CH3 homolytic bond dissociation enthalpy for the oxidation of TpRu(CO)(NCMe)(Me) to its RuIII cation through both reactant destabilization and product stabilization. This oxidation can thus lead to the olefin polymerization observed by Gunnoe and coworkers, since weak RuIII-C bonds would afford quick access to alkyl radical species. Calculations support the experimental proposal of a mechanism for catalytic hydrogen/deuterium exchange by a RuII-OH catalyst. Furthermore, calculational investigations reveal a probable pathway for the activation of C-H bonds that involves phosphine loss, 1,2-addition to the Ru-OH bond and then reversal of these steps with deuterium to incorporate it into the substrate. The presented results offer the indication for the net addition of aromatic C-H bonds across a RuII-OH bond in a process that although thermodynamically unfavorable is kinetically accessible. Calculations support experimental proposals as to the possibility of binding of weakly coordinating ligands such as dinitrogen, methylene chloride and fluorobenzene to the "14-electron" complex [(PCP)Ru(CO)]+ in preference to the formation of agostic Ru-H-C interactions. Reactions of [(PCP)Ru(CO)(1-ClCH2Cl)][BAr'4] with N2CHPh or phenylacetylene yielded conversions that are exothermic to both terminal carbenes and vinylidenes, respectively, and then bridging isomers of these by C-C bond formation resulting from insertion into the Ru-Cipso bond of the phenyl ring of PCP. The QM/MM and DFT calculations on full complexes [(PCP)(CO)Ru=(C)0,1=CHPh]+ and on small models [(PCP')(CO)Ru=(C)0,1=CH2]+, respectively, offered data supportive of the thermodynamic feasibility of the suggested experimental mechanisms and their proposed intermediates.

Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas / Made available in DSpace on 2018-07-17T22:20:59Z (GMT). No. of bitstreams: 1 Ferreira_JoseCarlosAffonso_D.pdf: 3844630 bytes, checksum: 6b82586d9e86bf977ba672078626b264 (MD5) Previous issue date: 1976 / Sem resumo. / Doutorado / Doutor em Ciências Médicas

Quantum chaos has emerged in the half of the last century with the notorious problem of scattering of heavy nuclei. Since then, theoreticians have developed powerful techniques to approach disordered quantum systems. In the late 70's, Casati and Chirikov initiated a new field of research by studying the quantum counterpart of classical problems that are known to exhibit chaos. Among the several quantum-classical chaotic systems studied, the kicked rotor stimulated a lot of enthusiasm in the scientific community due to its equivalence to the Anderson tight binding model. This equivalence allows one to map the random Anderson model into a set of fully deterministic equations, making the theoretical analysis of Anderson localization considerably simpler. In the one-dimensional linear regime, it is known that Anderson localization always prevents the diffusion of the momentum. On the other hand, for higher dimensions it was demonstrated that for certain conditions of the disorder parameter, Anderson localized modes can be inhibited, allowing then a phase transition from localized (insulating) to delocalized (metallic) states. In this thesis we will numerically and theoretically investigate the properties of a multidimensional quantum kicked rotor in a nonlinear medium. The presence of nonlinearity is particularly interesting as it raises the possibility of having soliton waves as eigenfunctions of the systems. We keep the generality of our approach by using an adjustable diffusive nonlinearity, which can describe several physical phenomena. By means of Variational Calculus we develop a chaotic map which fully describes the soliton dynamics. The analysis of such a map shows a rich physical scenario that evidences the wave-particle behavior of a soliton. Through the nonlinearity, we trace a correspondence between quantum and classical mechanics, which has no equivalent in linearized systems. Matter waves experiments provide an ideal environment for studying Anderson localization, as the interactions in these systems can be easily controlled by Feshbach resonance techniques. In the end of this thesis, we propose an experimental realization of the kicked rotor in a dipolar Bose Einstein Condensate.