Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-08-01T13:50:40Z No. of bitstreams: 1 MatheusSimoesNunes_DISSERT.pdf: 1513497 bytes, checksum: 8baee47339900a07d3bd07a91646af81 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-08-07T14:14:47Z (GMT) No. of bitstreams: 1 MatheusSimoesNunes_DISSERT.pdf: 1513497 bytes, checksum: 8baee47339900a07d3bd07a91646af81 (MD5) / Made available in DSpace on 2017-08-07T14:14:47Z (GMT). No. of bitstreams: 1 MatheusSimoesNunes_DISSERT.pdf: 1513497 bytes, checksum: 8baee47339900a07d3bd07a91646af81 (MD5) Previous issue date: 2015-08-18 / Ag?ncia Nacional do Petr?leo - ANP / Em se tratando da Economia, a ado??o de medidas protecionistas consiste em tem?tica que sempre desperta interesse e suscita pol?mica, especialmente pelo not?vel alcance da regula??o estatal no ?mbito da liberdade de mercado, haja vista o direcionamento do poder-dever estatal de administrar a inger?ncia do interesse p?blico na constru??o do processo de desenvolvimento. Diante da relev?ncia do estudo do controle da liberdade concorrencial no seio da Ind?stria brasileira do Petr?leo, G?s Natural e Biocombust?veis, o presente trabalho centraliza suas aten??es na avalia??o da efici?ncia econ?mica da Pol?tica de Conte?do Local adotada pelo Brasil nesse campo e sua contribui??o no processo de desenvolvimento do pa?s. A relev?ncia da tem?tica apresenta-se atrav?s da import?ncia cient?fica e pr?tica da investiga??o acerca dos reflexos da exig?ncia de aquisi??o local de bens e servi?os pelas empresas delegat?rias das atividades de Explora??o e Produ??o de petr?leo e g?s natural no Brasil. Pretende-se estudar, nessa abordagem jur?dico-econ?mica, se a mitiga??o da liberdade de mercado oriunda da inser??o das Clausulas de Conte?do Local contribui positivamente para a constru??o do desenvolvimento brasileiro. Nesse contexto, o modelo de regula??o adotado pelo Estado passa a constituir ferramenta basilar no que concerne ? atratividade dos interesses dos investidores no pa?s, servindo de refer?ncia para a verifica??o do potencial de concorr?ncia dos agentes do pa?s. Assim, em compasso com a proposta desta pesquisa, aborda-se a tem?tica ? luz dos sensos te?rico e pr?tico, de forma a promover, com enfoque no segmento de ?leo e g?s, uma an?lise sobre os reflexos da inser??o das Cl?usulas de Conte?do Local no cen?rio de mercado que se exige cada vez maior liberdade de atua??o dos agentes econ?micos a n?vel local e global. Para o trabalho em apre?o, utilizam-se como m?todos hipot?tico-dedutivo e funcionalista sist?mico para a abordagem, ao passo que a documenta??o indireta ? empregada no seio da pesquisa bibliogr?fica e documental. Uma vez empreendida a an?lise proposta, segundo a metodologia empregada para tal, conclui-se que a eleva??o da competitividade da ind?stria de hidrocarbonetos brasileira, imprescind?vel ao deslinde do processo de desenvolvimento, somente pode se realizar mediante a inser??o da inova??o no foco dessa din?mica. De igual forma, a efetividade da Pol?tica de Conte?do Local do pa?s, apesar de contribuir significativamente para o fortalecimento da cadeia produtiva nacional, deve constituir medida de cunho tempor?rio e receber rearranjo no sentido de afastar as barreiras anti-competitivas e minimizar os custos da produ??o. / Regarding economics, the adoption of protectionist measures consists on a theme that always arouses interest and raises polemics, especially by the notable range of state regulation in the free market's ambit, in view of the direction of state power and duty to manage the intervention of public interest in the construction of the development process. In the face of the importance of the competitive freedom's control study within the Brazilian Oil Industry, Natural Gas and Biofuels, this study centers its attention on evaluation of Local Content Policy economic efficiency adopted by Brazil in this area and its contribution in the country's development process. The theme's relevance presents through the scientific and practical importance of research concerning the requirement of local procurement of goods and services' reflects by represented companies of Exploration and Production of oil and natural gas' activities in Brazil. It is intended to study in this legal-economic approach, if its freedom market's mitigation from the insertion of Local Content Clauses contributes positively to the Brazilian development construction. In this context, the regulatory model adopted by the State becomes a fundamental tool concerning to the interests of investors' attractiveness in the country, used like reference for verification of potential competition from the country's agents. Therefore, in compass with this research's proposal, discusses with the theme in light of theoretical and practical senses, in order to promote, focused on oil and gas sector, an analysis about the impact of the Local Clauses Content's insertion in the market scenario what demands more freedom on the action of economic agents at local and global level. For the present work have been used hypothetical-deductive as methods and systemic functionalist as approach, while the indirect documentation is applied within bibliographical and documentary research. Once undertaken the proposed analysis, according the applied methods, it concludes that the competitivity elevation of the Brazilian hydrocarbons industry, essential to the development process conclusion, can only be done by inserting innovation in this dynamic focus. Likewise, the effectiveness of the country's Local Content Policy, although significantly contribute to the strengthening of national production chain, has to constitute a temporary measure and receive rearrangement in order to separate anti-competitive barriers and minimize production costs.

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-05-30T17:17:07Z No. of bitstreams: 1 2015 - Than?zia Ferraz Santos.pdf: 1742658 bytes, checksum: 07706cbaaa52be04cb7ec04d0d453fa2 (MD5) / Made available in DSpace on 2017-05-30T17:17:07Z (GMT). No. of bitstreams: 1 2015 - Than?zia Ferraz Santos.pdf: 1742658 bytes, checksum: 07706cbaaa52be04cb7ec04d0d453fa2 (MD5) Previous issue date: 2015-08-28 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq / In this work, potential energy surfaces for the reactions of hydroxyl radical and 2,5-dimethylfuran were studied using the Density Functional Theory. The stationary points, such as reactants, pre-barrier complex, transition states and products were located at BHandHLYP/aug-cc-pVDZ and M06-2X-cc-pVDZ levels by geometry optimization, followed by the calculations of vibrational frequencies. Single point calculations using CCSD(T) were also explored. Thermodynamics properties of enthalpy, entrophy and Gibbs free energies have been determinated at 298,15 K within the conventional equations of Statistical Thermodynamics. The results suggest different addition mechanisms, since an analysis of the potential energy surface (PES) in BHandHLYP/ aug-cc-pVDZ points to paths going through a pi-type intermediary, while in M06-2X/aug-cc-pVDZ the intermediary would have a sigma-type interaction. About the abstraction reactions, only the PES obtained in M06-2X/aug-cc-pVDZ level points to the formation of a pre-barrier complex. The rate coefficients have been determined on the basis of the Variational Transition State Theory, with the kcvt program. The coefficient obtained at CCSD(T)/aug-cc-pVDZ//BHandHLYP/aug-cc-pVDZ for the mechanism which includes the participation of ?-PC is ???????=48,4?10?11, cm? molec-1 s-1, approximately 4 times higher than the experimental rate coefficient. Deviations of this magnitude are considered satisfactory in theoretical calculation of kinetic parameters. Addition of OH should be the main degradation pathway for furan and its derivatives, during daytime. Moreover, it was possible to clarify the effect of the formation of pre-barrier complexes in the reactions between DMF and OH radicals and propose rate coefficients in the high temperature region, which can be applied in combustion studies / Neste trabalho, as superf?cies de energia potencial para as rea??es do radical hidroxila (OH) com o 2,5-dimetilfurano (DMF) foram estudadas em detalhes, utilizando a Teoria do Funcional de Densidade. Pontos estacion?rios como reagentes, complexos pr?-barreira, estados de transi??o e produtos foram localizados por procedimentos de otimiza??o de geometria, acompanhado do c?lculo das frequ?ncias vibracionais, em n?veis BHandHLYP/aug-cc-pVDZ e M06-2X/aug-cc-pVDZ. C?lculos single point a partir da metodologia coupled-cluster com simples e duplas excita??es com tratamento perturbativo das triplas conectadas, CCSD(T), tamb?m foi explorado. Propriedades termodin?micas de entalpia, entropia e energia livre de Gibbs foram calculadas a 298,15 K atrav?s das equa??es da Termodin?mica Estat?stica. Os resultados sugerem mecanismos de adi??o diferentes, j? que uma an?lise da superf?cie de energia potencial (SEP) em BHandHLYP/aug-cc-pVDZ aponta para caminhos passando por um intermedi?rio do tipo pi, enquanto em M06-2X/aug-cc-pVDZ o intermedi?rio seria do tipo sigma. Na abstra??o, apenas a SEP obtida em M06-2X/aug-cc-pVDZ aponta para a forma??o de um intermedi?rio pr?-barreira. Coeficientes de velocidade foram determinados com base na Teoria do Estado de Transi??o Variacional, com aux?lio do programa kcvt. O coeficiente CCSD(T)/aug-cc-pVDZ//BHandHLYP/aug-cc-pVDZ para o mecanismo que inclui a participa??o do ?-PC ? de ???????=48,4?10?11 cm? molec-1 s-1, superestimado em rela??o ao coeficiente experimental em aproximadamente 4 vezes. Desvios dessa magnitude s?o esperados em c?lculos te?ricos, especialmente quando envolvem mol?culas volumosas. Pode-se constatar que a adi??o de OH deve ser a principal rota de degrada??o para o furano e seus derivados durante o dia. Al?m disso, foi poss?vel esclarecer o efeito da forma??o de intermedi?rios pr?-barreira nas rea??es entre DMF e o radical OH.

Made available in DSpace on 2014-12-17T14:20:16Z (GMT). No. of bitstreams: 1 FranciscoNABN.pdf: 1571343 bytes, checksum: f30a0bcc5b0d576b24ed11dbd5f25df2 (MD5) Previous issue date: 2009-12-09 / This doctoral thesis presents an analysis of the production of bicarbonates and related regional development in Brazil. It is widely believed that one of Brazil s vocations lies in the agro-energy sector. However, current national agro-energy policies, together with the experience of Petrobras (the national oil company) in rural settlements in the state of Rio Grande do Norte, show that Brazil has fallen short of effectively including the North and Northeast regions of the country, let alone small-scale rural producers (residing in rural settlements or not), in the development process and related benefits from the country s participation in the current world energy grid. The methodology entails secondary research related to the theme, such as books, official documents, websites and statistical databases from diverse sources, in addition to an analysis of statements from interviews of Petrobras representatives and other important scientific, institutional and labor union authorities, in relation to agro-energy issues and the socio-economic participation of family-based agriculture in this process. Principal findings show a correlation between agro-energy and regional development, creating the potential for numerous opportunities and challenges. Findings demonstrate the possibility of reversing/reducing historically rooted indices of hunger and poverty that continue to devastate the North and Northeast regions. At the same time, the thesis points to a potentially catastrophic increase in regional disparities, should the present historic moment not be seized upon so as to include these regions. Classic examples of non-policy at the federal level are presented as evidence of the absence of a regionally focused agroenergy policy in the current government, reinforced by the experiences of Petrobras in the Rio Grande do Norte rural settlements. Finally, the thesis concludes that there is an urgent need to create a government-sponsored enterprise (with a structure similar to Petrobras) with the purpose of implementing a truly broad and inclusive development process for the bicarbonates production sector, while remaining attentive to Brazil s opportune and critical role in the world s current agro-energy scenario. / Analisa a rela??o entre a produ??o de biocarburantes e a quest?o regional. Acredita-se que a produ??o agroenerg?tica ? uma voca??o brasileira, contudo, a atual pol?tica nacional agoenerg?tica e a experi?ncia dos assentamentos rurais apoiados pela Petrobras, no Rio Grande do Norte, n?o incluem efetivamente as regi?es Norte e Nordeste do Brasil, tampouco os pequenos produtores rurais (assentados ou n?o) nos benef?cios decorrentes da atual mudan?a na matriz energ?tica mundial. A metodologia utilizada inclui a pesquisa secund?ria concernente ao tema, tais como livros, documentos oficiais, sites, bases estat?sticas entre as demais fontes, e ainda a an?lise de discurso tomando por base entrevistas realizadas junto ? Petrobras e com importantes autoridades cient?ficas, institucionais e sindicais relacionadas ? quest?o agroenerg?tica e a inclus?o s?cio-econ?mica da agricultura familiar neste processo. Os principais resultados indicam que a correla??o entre agroenergia e a quest?o regional apresenta in?meras potencialidades e desafios. Aponta para a possibilidade de revers?o/redu??o dos hist?ricos indicadores de fome e pobreza que assolam o Norte e o Nordeste. Contudo, tamb?m indica que a n?o pol?tica agroenerg?tica no atual governo federal, assim como experi?ncias da Petrobras nos assentamentos do Rio Grande do Norte s?o exemplos claros de n?o pol?tica que podem agravar o quadro de disparidades regionais de forma abissal, caso n?o haja aproveitamento deste momento hist?rico. Por fim conclui que urge a cria??o de uma empresa de economia mista (nos moldes da Petrobras) e integradora especializada na produ??o de biocarburantes, que trate desta quest?o com a urg?ncia e import?ncia que o Brasil ocupa no cen?rio agroenerg?tico mundial, numa perspectiva verdadeiramente includente e abrangente.