30 resultados para OMC

em Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho"


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Dans cet article, on cherche la viabilité analytique du Jeu à Deux Niveaux - JDN pour examiner la situation brésilienne dans l'Organisation Mondiale du Commerce - OMC. on cherche à voir, en même temps, si le perfectionnement des institutions démocratiques brésiliennes en ce qui concerne le processus de formulation de la politique extérieure sera capable d'améliorer la réponse aux demandes des groupes d'intérêt et d'élargir la compétence technique de la diplomatie brésilienne dans les négociations commerciales internationales. on cherche aussi à savoir si ce perfectionnement peut faire monter la crédibilité et la légitimité internationale des démarches brésiliennes au sein de l'OMC, dans le sens de tourner en leur faveur les régimes internationaux. Pour cela, on analyse le contentieux des brevets pharmaceutiques mené contre les États-Unis au sein de l'OMC.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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A Iniciativa Economia Verde, numa perspectiva de análise teórica, é uma reiteração de velhas ideias; não é propriamente um novo conceito, mas sim a proposta de um conjunto de instrumentos para o alcance do desenvolvimento sustentável. Uma novidade importante dessa inciativa é a defesa do ativismo de políticas de indução às mudanças tecnológicas ambientais, o que revela sua aproximação com a economia evolucionária. No plano da economia política internacional, o potencial de conflito Norte-Sul sobre a Iniciativa Economia Verde se vincula aos impasses registrados nas negociações sobre liberalização do comércio de bens e serviços ambientais na Rodada Doha da OMC.

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L'objectif de cet article est de montrer l'existence de traces historiques permettant de lier les concepts de libre-échange et protectionnisme, tous les deux employés dans la politique de commerce extérieur des Etats-Unis. Parallèlement, on cherche à souligner l'importance de la législation et des principes formulés dans ce pays et leur rôle explicatif concernant les motivations de la structure du commerce international après 1945. Ce rôle a en effet contribué à qu'on puisse mieux comprendre les tournées de négociations du GATT (General Agreement on Tariffs and Trade) jusqu'à la création de l'OMC (Organisation Mondiale du Commerce), en 1995. on traite également des raisons pour lesquelles le commerce international aux Etats-Unis est non seulement une question d'Etat mais encore une question de la société.

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Sol-gel derived poly(oxyethylene)/siloxane organic/inorganic di-ureasil hybrids containing different amounts of methacrylic acid (McOH, CH(2)=C(CH(3))COOH)) modified zirconium oxo-clusters (Zr-OMc) were processed as thin films deposited in glassy substrates via spin coating and as transparent and shape controlled monoliths. Channel monomode waveguides and diffraction gratings were UV patterned using the Talbot interferometer and the Lloyd mirror interferometer experimental setups. The time dependence of the diffraction gratings efficiency was studied for hybrids containing different amounts of Zr-OMc. Finally, the number of propagating modes and the refractive index gradient within the waveguide region, determined as a Gaussian section located below the patterned channel, was evaluated and modeled, a maximum index contrast of 2.43 X 10(-5) being estimated.

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Organic-inorganic hybrids containing methacrylic acid (McOH, CH(2)= C(CH(3))COOH)) modified zirconium tetrapropoxide, Zr(OPr(n))(4), classed as di-ureasil-zirconium oxo-cluster hybrids, have been prepared and structurally characterized by X-ray diffraction (XRD), small-angle X-ray scattering (SAXS), Fourier transform infrared (FT-IR) and Raman (FT-Raman) spectroscopies, Si and C nuclear magnetic resonance (NMR), and atomic force microscopy (AFM). XRD and SAXS results have pointed out the presence of Si- and Zr-based nanobuilding blocks (NBBs) dispersed into the organic phase. Inter-NBBs correlation distances have been estimated for the pure di-ureasil and a model compound obtained. by hydrolysis/condensation of Zr(OPr(n))(4):McOH (molar ratio 1: 1): d(Si) approximate to 26 +/- 1 angstrom and d(Zr) approximate to 16 +/- 1 angstrom, respectively. In the case of the di-ureasil-zirconium oxo-cluster hybrids, these distances depend on the Zr relative molar percentage (rel. mol. Zr %) (d(Si) ranges from 18 to 25 angstrom and d(Zr) from 14 to 23 angstrom, as the rel. mol. Zr % increases from 5 to 75), suggesting that the Si- and Zr-based clusters are interconstrained. Complementary data from FT-IR, FT-Raman, (29)Si and (13)C NMR, and AFM support to a structural model where McOH-modified Zr-based NBBs (Zr-OMc) are present over the whole range of composition. At low Zr-OMc contents (rel. mol. Zr % <30) the clusters are well-dispersed within the di-ureasil host, whereas segregation occurs at the 0.1 mu m scale at high Zr-OMc concentration (rel. mol. Zr % = 50). No Zr-O-Si heterocondensation has been discerned. Monomode waveguides, diffractions gratings, and Fabry-Perot cavities have been written through the exposure of the hybrid monoliths to UV light. FT-Raman has shown that the chemical process that takes place under illumination is the polymerization of the methacrylate groups of the Zr-OMc NBBs. The guidance region in patterned channels is a Gaussian section located below the exposed surface with typical dimensions of 320 mu m wide and 88 mu m deep. The effective refractive index is 1.5162 (maximum index contrast on the order of 1 x 10(-4)) and the reflection coeficient of the Fabry-Perot cavity (formed by a grating patterned into a 0.278 cm channel) is 0.042 with a free spectral range value of 35.6 GHz.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Pós-graduação em Ciências Sociais - FFC