677 research outputs found
Spinorial Field and Lyra Geometry
Full text linkThe Dirac field is studied in a Lyra space-time background by means of the
classical Schwinger Variational Principle. We obtain the equations of motion,
establish the conservation laws, and get a scale relation relating the
energy-momentum and spin tensors. Such scale relation is an intrinsic property
for matter fields in Lyra background.Comment: 10 pages. Some misprints correcte
Palinologia de espécies de Malpighiaceae Juss. ocorrentes nas restingas do Estado do Rio de Janeiro
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Relative growth in the fiddler crab Uca uruguayensis Nobili, 1901 (Brachyura, Ocypodidae) from Garças River mangrove, Guaratuba Bay, southern Brazil
Full text linkChlorophyll and carbohydrates in Arachis pintoi plants under influence of water regimes and nitrogen fertilization
Full text linkAnalysis of floristic composition and structure as an aid to monitoring protected areas of dense rain forest in southeastern Brazil
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Propagação vegetativa de Brosimum gaudichaudii Tréc. (mama-cadela) por estacas de raÃzes
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