66 research outputs found
Image formation by manipulation of the entangled angular spectrum
We demonstrate theoretical and experimentally how it is possible to
manipulate an entangled angular spectrum of twin beams, in order to reconstruct
correlated images with coincidence detection. The entangled angular spectrum
comes from the pump and the image is obtained only if signal and idler are
properly treated.Comment: Submitted for publication in Optics Communication
Endophytic fungi from medicinal plant Bauhinia forficata: Diversity and biotechnological potential
An EBSD study of the deformation of service-aged 316 austenitic steel
Electron backscatter diffraction (EBSD) has been used to examine the plastic deformation of an ex-service 316 austenitic stainless steel at 297K and 823K (24 °C and 550 °C)at strain rates 3.5x10-3 to 4 x 10-7 s-1. The distribution of local misorientations was found to depend on the imposed plastic strain following a lognormal distribution at true strains 0.1. At 823 K (550 °C), the distribution of misorientations depended on the applied strain rate. The evolution of lattice misorientations with increasing plastic strain up to 0.23 was quantified using the metrics kernel average misorientation, average intragrain misorientation, and low angle misorientation fraction. For strain rate down to 10-5 s-1 all metrics were insensitive to deformation temperature, mode (tension vs. compression) and orientation of the measurement plane. The strain sensitivity of the different metrics was found to depend on the misorientation ranges considered in their calculation. A simple new metric, proportion of undeformed grains, is proposed for assessing strain in both aged and unaged material. Lattice misorientations build up with strain faster in aged steel than in un-aged material and most of the metrics were sensitive to the effects of thermal aging. Ignoring aging effects leads to significant overestimation of the strains around welds. The EBSD results were compared with nanohardness measurements and good agreement established between the two techniques of assessing plastic strain in aged 316 steel
Formação dos profissionais das áreas de ciências agrárias em segurança do trabalho rural
Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation
Análise da produção bibliográfica sobre atenção primária à saúde no Brasil em quatro periódicos selecionados
Avaliação da aptidão agrícola das terras como subsídio ao assentamento de famílias rurais, utilizando sistemas de informações geográficas
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