Annihilation
Mostrando 13-24 de 77 artigos, teses e dissertações.
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13. Hydrogen gas permeation through amorphous and partially crystallized Fe40Ni38Mo4B18
Samples of amorphous and partially crystallized Fe40Ni38Mo4B18 alloy were submitted to hydrogen gas permeation from 523 to 643 K. The hydrogen permeation curves exhibited a single sigmoidal shape, typical of tests where no hydride formation occurs. It was observed that the hydrogen diffusivity increases for the amorphous samples and partially crystallized al
Mat. Res.. Publicado em: 30/08/2012
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14. Partidos políticos e grupos de poder em Irati/PR: uma análise do poder local no período de 1988 a 2008
This study aimed to demonstrate and analyze the relations of political power in Irati-PR from the identification of partidary political groups, conflicts and alliances between them. The time frame is limited to the years 1988 to 2008 and the periods of municipal elections, limits of exaltation in the relations of local power. The historical construction of l
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2011
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15. Soberba e humildade em Agostinho de Hipona / Pride and humility in Augustine of Hipon
Soberba e humildade em Agostinho são analisadas neste trabalho por meio de uma inter-relação entre os métodos anagógico/Pátria-Via e o Trinitário, métodos que, segundo cremos, foram utilizados por Agostinho. A aplicação deste método nos levará a notar que soberba e humildade só podem ser entendidas uma à luz da outra, porque possuem uma estrutu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2011
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16. A arte e a arquitetura religiosa popular do Antônio Vicente Mendes Maciel, o Bom Jesus Conselheiro
Antônio Vicente Mendes Maciel, before settling in Bahia, as oral tradition has it, had a promise to keep; to build twenty-five churches in lands far from his own Ceará. The information about Antônio Conselheiro that became history consists of the last four years as founding leader of the Belo Monte community and provoker of the fratricide conflict that ex
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/06/2011
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17. Luz: um raro produto de reação
The production of visible light by chemical reactions constitutes interesting and fascinating phenomena and several reaction mechanisms are discussed to rationalize excited state formation. Most efficient chemiluminescence reactions are thought to involve one or more electron transfer steps and chemiexcitation is believed to occur by radical annihilation. A
Química Nova. Publicado em: 2011
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18. Variational calculation of low-energy positron life time in Xe atoms
The least-squares variational method (LSVM) is used for determining trial wavefunctions representing low-energy positron-xenon elastic scattering, which are used to determine the positron lifetime. The trial function is taken to depend on several adjustable parameters, and is improved iteratively by increasing the number of terms. The bound state wavefunctio
Brazilian Journal of Physics. Publicado em: 2010-03
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19. Microstructural and nonohmic properties of ZnO.Pr6O11 CoO polycrystalline system
The microstructure and electrical properties of varistors composed of (95-x) ZnO + x Pr6O11 + 5 CoO (ZPC), (x = 0.1, 0.5 and 1.0) and sintered at 1300 and 1350 °C, were investigated. According to X-ray diffraction, several phases (ZnO, Pr2O3 and Pr2CoO4) are present when x = 1.0. Using Scanning Electron Microscopy, all of these compositions contain precipit
Materials Research. Publicado em: 2010-03
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20. Study of the momentum distribution of bound electrons by angle-energy correlation of electro-positron annihilation radiation / Estudo da distribuição de momento de elétrons ligados por correlação ângulo-energia da radiação de aniquilação elétron-pósitron
Há várias evidências experimentais da existência de matéria escura no universo. Apesar destas evidências, pouco se sabe sobre sua constituição, sabendo-se apenas que interage gravitacionalmente, mas não eletromagneticamente. Neste projeto, investigamos a possibilidade da matéria escura ser composta por partículas supermassivas e fortemente interag
Publicado em: 2010
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21. Tentativa de auto-extermínio entre adolescentes e jovens: uma análise compreensiva
This is a qualitative study with a phenomenological approach that aimed to understand the meaning of self-annihilation attempt in the lives of teenagers and adolescents who tried to take their own lives. The research was conducted in Senhora do Carmo, Minas Gerais, Brazil. The participants were four adolescents who have attempted self-extermination. Data was
Publicado em: 2010
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22. Processing of a duplex stainless steel by equal channel angular extrusion
A UNS S32205 duplex stainless steel was processed by ECAE in three different velocities, at room temperature, and heat treated in different temperatures and times to evaluate recrystallization. Attrition forces promoted great deformation heterogeneity in the samples sections, with hardness increase, and morphology changes in the grains and changing orientati
Matéria (Rio de Janeiro). Publicado em: 2010
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23. Espalhamento de Férmions sob Influencia da Violação de Lorentz no Setor Fotônico / Scattering of Fermions under Influence of Violation Lorentz Sector Photonic
The standard model extension is a theoretical framework which includes the possibility of Lorentz symmetry violation in the Standard Model of elementary interactions. In electrodynamics, this possibility is represented by the term, KμFμF, that violates Lorentz symmetry without jeopardizing CPT symmetry, and the term "μvAμ@A, which violate
Publicado em: 2010
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24. A sociedade de risco mundial e a responsabilidade penal das pessoas jurídicas : o papel das empresas e suas marcas como elementos indutores à conscientização ambiental
The world risk society is characterized for its negative dimension of equality, since citizens are not equal anymore for their rights or benefits that they share, but in detriment, for the common risks which they are exposed. The technological development as well as the scientific knowledge addressed the man to a modernity context promising to integrally acc
Publicado em: 2010