Encontrados 8 documentos, a visualizar página 1 de 1
Room temperature paramagnetism of ZnO:Mn films grown by RF-sputtering
Oliveira, Filipe André; Cerqueira, M. F.; Vasilevskiy, Mikhail; Viseu, T. M. R.; Campos, J. Ayres de; Rolo, Anabela G.; Martins, J. S.; Sobolev, N. A.ZnO:Mn transparent thin films (thickness b1 μm) with the Mn contents ranging from 1.8 to 3.25 at.% were grown by RF magnetron co-sputtering. The films are nanocrystalline, with wurtzite-structure grains of a typical size of 20 nm and with a preferential orientation of the c-axis perpendicular to the surface. According to the Raman spectroscopy data, Mn mostly substitutes Zn in the lattice sites. In spite of the...
The Coester line in relativistic mean field nuclear matter
Delfino,A.; Malheiro,M.; Timóteo,V. S.; Martins,J. S. SáThe Walecka model contains essentially two parameters that are associated with the Lorentz scalar (S) and vector (V) interactions. These parameters are related to a two-body interaction consisting of S and V, imposing the condition that the two-body binding energy is fixed. We have obtained a set of different values for the nuclear matter binding energies (B N) at equilibrium densities (rhoo). We investigated t...
Computer simulations of statistical models and dynamic complex systems
Martins,J.S. Sá; Oliveira,P.M.C. deThese notes concern the material covered by the authors during 4 classes on the Escola Brasileira de Mecânica Estatística, University of São Paulo at São Carlos, February 2004. They are divided in almost independent sections, each one with a small introduction to the subject and emphasis on the computational strategy adopted.
Computer simulation of sympatric speciation with Penna ageing model
Luz-Burgoa,K.; Oliveira,S. Moss de; Martins,J.S. Sá; Stauffer,D.; Sousa,A.O.One species is simulated to split into two separate species via random mutations, even if both populations live together in the same environment. This speciation is achieved in the Penna bitstring model of biological ageing, with modified Verhulst factors, and in part by additional bitstrings regulating phenotype and mate selection.
Levantamento semidetalhado dos solos da microbacia dos Córregos Barroso e Barro...
MARTINS, J. S.; CALDERANO, S. B.; ZARONI, M. J.; COUTINHO, H. L. C.; BACA, J. F. M.2002 ; Disponível em: http://www.cnps.embrapa.br/solosbr/pdfs/doc49_2002_barroso_barrozinho.pdf
Levantamento de reconhecimento de média intensidade dos solos e avaliação da ap...
LIMA, A. A. C.; RÊGO, R. S.; SOARES, A. F.; SILVA, J. M. L. da; MARTINS, J. S.; GAMA, J. R. N. F.; SANTOS, P. L. dos; DURIEZ, M. A. de M.1999
Capacidade de troca de cátions da fração argila em latossolo amarelo com difere...
SANTOS, P. L. dos; MARTINS, J. S.; VALENTE, M. A.; OLIVEIRA JUNIOR, R. C. de.1997
Fractures of the mandibular condyle. Therapeutic controversies.
Martins, J S; Serviço de Cirúrgia Plástica e Reconstrutiva, Hospital Egas Moniz, Lisboa.; Frage, Z BThe condylar mandibular fractures are important because its incidence, possible complications and controversial treatment. The treatment of condylar fractures has generated more controversy and discussion than any other in the field of maxillofacial trauma. The main goal of treatment is restoration of function and not anatomic restoration of parts. Despite several clinical and anatomical studies still lack cons...
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