Nuclear Fusion
Mostrando 13-24 de 945 artigos, teses e dissertações.
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13. Histopathological changes in the gill and liver tissues of freshwater fish, Cirrhinus mrigala exposed to dichlorvos
The histopathological effects of dichlorvos, an organophosphate pesticide, on the gill and liver tissues in Cirrhinus mrigala were determined by light microscopy. The fishes were exposed to sublethal concentrations (0.91 and 1.82 ppm) of dichlorvos for 10 days with parallel untreated control. No histopathological effects were observed in control group. Hyper
Brazilian Archives of Biology and Technology. Publicado em: 2009-10
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14. Nuclear problems in astrophysical q-plasmas and environments
Experimental measurements in terrestrial laboratory, space and astrophysical observations of variation and fluctuation of nuclear decay constants, measurements of large enhancements in fusion reaction rate of deuterons implanted in metals and electron capture by nuclei in solar core indicate that these processes depend on the environment where they take plac
Brazilian Journal of Physics. Publicado em: 2009-08
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15. Jensen inequality applied to nuclear fusion probability / Desigualdade de Jensen aplicada à probabilidade de fusão nuclear
We discuss the quantum tunneling problem in physical systems involving many degrees of freedom. We apply the Jensen inequality to the semi-classical analytical probability of fusion between two nuclei, where we considered intrinsic degrees of freedom. We employed different tunneling potential barriers and analytically worked on each of them. We have mathemat
Publicado em: 2009
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16. Work hardening and recrystallization of EUROFER and ODS-EUROFER stainless steels to nuclear fusion reactors application. / Encruamento e recristalização dos aços inoxidáveis EUROFER e ODS-EUROFER para aplicação em reatores de fusão nuclear.
Este trabalho consiste em uma pesquisa sobre aços inoxidáveis ferríticomartensíticos de ativação reduzida (RAFM): EUROFER (9Cr-1W) e ODS-EUROFER (9Cr-1W-0,3Y2O3), envolvendo o encruamento e a recristalização destas duas ligas com o objetivo de estudar a influência de uma dispersão de partículas nanométricas na recristalização de aços inoxidáv
Publicado em: 2009
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17. Efeito da pré-maturação sobre o desenvolvimento embrionário de oócitos submetidos à ativação partenogenética e transferência de núcleo / Effect of pre-maturation on embryo development of oocytes submitted to parthenogenetic activation and nuclear transfer
Embryo production rates obtained from both IVF (30-40%) and NT (23%) are still below the expected values. Therefore, oocyte pre-maturation using cell cycle inhibitors is one of the alternatives which has been studied to increase the competence of oocytes used for IVP, as an attempt to optimize the success rates of these biotechniques. Neurotrophins are known
Publicado em: 2009
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18. Analise de possiveis mecanismos e consequencias funcionais da expressão de galectina-3 em celulas de glioma expostas a condições hipoxicas / Analysis of possible mechanisms and functional consequences of galectin-3 expression in glioma cells exposed to hypoxia
Gliomas are primary Central Nervous System tumors. Among them, glioblastomas are the most common clinical forms and have the worst prognosis. In an attempt to understand glioma biology, the NG97 cell line was established. This cell line presents glioblastoma s characteristics, showing nuclear atipia and high growth rate. Recently, it was discovered that this
Publicado em: 2009
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19. Padronização da expressão heterologa e de modelo de ensaio de atividade para a proteina quinase humana S6K / Standardization of the heterologous expression and of a model assay of activity for the human protein kinase S6K
The 70kDa ribosomal S6 protein kinase 1 (S6K1) is a phosphoprotein involved in the regulation of genes related to translational control in mammals. S6K1 shows distinct nuclear (a1) and cytoplasmic (a2) forms. Phosphorylation of the S6K1 best characterized target, the protein of the small ribosomal subunit (RPS6), has been generally associated to the selectiv
Publicado em: 2009
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20. Avaliação do fluxo de nêutrons e da taxa de dose durante o funcionamento nominal do ITER
The ITER (International Thermonuclear Experimental Reactor) is a tokamak with elongated plasma and single null poloidal divertor. The nominal inductive operation produces a DT fusion power of 500 MW for a burn length of 400 s, with a pulse repetition period as short as 1,800 s. The main goal is to exhibit the use of fusion energy for peaceful purposes. The t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/07/2008
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21. Nuclear structure of 64Cu / Estrutura nuclear do 64Cu
The main goal of this work is a study of the odd-odd nucleus 64Cu using in-beam gamma-ray spectroscopy. For this study, the fusion-evaporation reaction 51V(16O, 2pn)64Cu at 70 MeV bombarding energy has been performed with the 8-UD Pelletron TANDEM accelerator of the Universidade de São Paulo. The target consisted of a 4.4 mg/cm2 foil of 51V with a 7.0 mg/cm
Publicado em: 2008
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22. Fluorescent chromosome banding and DNA content in tropical species of Pinus. / Bandeamento cromossÃmico e conteÃdo de DNA em espÃcies tropicais de Pinus
Several species of the genus Pinus, including some of tropical origin have been widely used in the production of raw materials such as wood and cellulose. Since fifty years ago, Pinus tecunumanii Eguiluz &J. P. Perry species is the center of a taxonomic controversy. Some works considered Pinus tecunumanii as a Pinus patula subspecies, while others considered
Publicado em: 2008
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23. Estudo da copolimerização em mini emulsão de metacrilato de metila/metacrilato de etila / Study of methyl methacrylate/ethyl methacrylate in mini emulsion copolimerization
Reduction of volatile organic compounds (VOC) usage is a constant environmental demand. Polymeric aqueous emulsion of low surfactant contends produced from direct miniemulsion synthesis are used with advantages to replace organic solvents media as well as aqueous emulsions of high surfactant concentration. Water as continuous phase and organic monomers with
Publicado em: 2008
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24. Reaction Mechanisms on the 16,18O + 63,65Cu Systems / Mecanismos de Reação nos Sistemas 16,18O + 63,65Cu
The quasi-elastic excitation functions for the systems 16,18O + 63,65Cu have been measured, at the angle 161º and at energies between 30 and 48MeV, in the laboratory reference system. The quasi-elastic term refers to the sum of the elastic scattering, the inelastic scattering and the transfer reactions. Care has been taken in order to obtain high precision
Publicado em: 2007