5,822 research outputs found
Gestão de arquivo das secretarias das chefias da Embrapa Florestas.
bitstream/item/25628/1/168-10.pd
Measurements and analysis of the upper critical field on an underdoped and overdoped compounds
The upper critical field is one of the many non conventional
properties of high- cuprates. It is possible that the
anomalies are due to the presence of inhomogeneities in the local charge
carrier density of the planes. In order to study this point, we
have prepared good quality samples of polycrystalline
using the wet-chemical method, which has demonstrated to produce samples with a
better cation distribution. In particular, we have studied the temperature
dependence of the second critical field, , through the magnetization
measurements on two samples with opposite average carrier concentration
() and nearly the same critical temperature, namely
(underdoped) and (overdoped). The results close to do not
follow the usual Ginzburg-Landau theory and are interpreted by a theory which
takes into account the influence of the inhomogeneities.Comment: Published versio
Características físico-químicas, microbiológicas e aceitabilidade de iogurte de leite de búfala para merenda escolar.
bitstream/item/63158/1/Oriental-Doc109.pd
Supercurrent induced domain wall motion
We study the dynamics of a magnetic domain wall, inserted in, or juxtaposed
to, a conventional superconductor, via the passage of a spin polarized current
through a FSF junction. Solving the Landau-Lifshitz-Gilbert equation of motion
for the magnetic moments we calculate the velocity of the domain wall and
compare it with the case of a FNF junction. We find that in several regimes the
domain wall velocity is larger when it is driven by a supercurrent.Comment: 10 pages, 8 figure
Utilização de Pseudomanas fluorescens no controle biológico de Macrophomina phaseolina.
bitstream/item/71527/1/ID-30984.pd
Avaliação de leguminosas arbóreas e arbustivas de mútiplo uso em Rondônia
Selecao de leguminosas arboreas e arbustivas de multiplos propositos (Acacia angustissima, Albizia saman, A. lebbek, Desmodium gynoides, Sesbania sesban, Calliandra calothyrsus, Leucaena leucocephala, L. hybrid x1, L. hybrid x2, L. hybrid x3, Inga edulis, Clitoria racemosa, anandenanthera pavonina, Caesalpina peltephoroides), em parcelas experimentais com 16 plantas sem repeticoes. Foi avaliada taxa de sobrevivencia, diametro e altura aos 6, 12, 18 e 24 meses. A taxa de sobrevivencia foi de 100% aos seis meses de idade. Os maiores DAPs aos seis e doze meses foram para A. angustissima, I. edulis, a. pavonina. Considerando-se os parametros avaliados, as especies mais promissoras, principalmente para compor sistemas agroflorestais, foram: A. angustissima, I. edulis, A. saman e A. pavonina.bitstream/item/84465/1/FOL-5342-0001.pd
- …