Polar Maps
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Segmentação de imagens SPECT/Gated-SPECT do miocárdio e geração de um mapa polar. / Segmentation of myocardial SPECT/Gated-SPECT images and polar map generation.
Tomografia computadorizada por emissão de fóton único (SPECT) é uma modalidade da medicina nuclear baseada na medida da distribuição espacial de um radionuclídeo. Esta técnica é amplamente utilizada em cardiologia para avaliar problemas de perfusão miocárdica, relacionados ao fluxo sanguíneo nas artérias coronárias. As imagens SPECT proporciona
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/05/2011
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2. Self-organizing maps and VolSurf approach to predict aldose reductase inhibition by flavonoid compounds
Aldose Reductase (AR) is the polyol pathway key enzyme which converts glucose to sorbitol. High glucose availability in insulin resistant tissues in diabetes leads into an accumulation of sorbitol, which has been associated with typical chronic complications of this disease, such as neuropathy, nephropathy and retinopathy. In this study, 71 flavonoids AR inh
Revista Brasileira de Farmacognosia. Publicado em: 04/03/2011
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3. Estudo comparativo da densidade e topografia de neurônios de retinas de Philodryas olfesii e P. patagoniensis (serpentes, colubridae) / Text not informed by the author.
Snakes are a diversified group found in almost all regions of the planet, occupying different habitats, with exception to Polar Regions, a few islands and the deeper ocean waters. Its diversity indicates the high variability of sensory organs, which are adapted to the habits and habitats of each species. Studies about snakes visual system are scarce and have
Publicado em: 2009
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4. Análise multi-espectral dos eventos cíclicos de Carinae / Multi-spectral analysis of the cyclic events of Eta Carinae
In this thesis, a multi-wavelength study on the cyclic events of Eta Carinae was performed. The presence of a hole in the polar region of the Homunculus was confirmed by the velocity maps of the [Fe II] 12567 line. The blue-shifted component of the He I 10830, detected towards the NW lobe, was mapped and it is in the equatorial plane. It was observed that wi
Publicado em: 2009
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5. Integral field spectroscopy of the Homunculus nebula / Espectroscopia de campo integral do Homúnculo de eta Carinae
The Homunculus nebula was mapped using the integral field technique and the results are presented in this dissertation. The observations were obtained in the J band in the range from 10620 Å to 12960 Å using the CIRPASS s IFU, which contains 499 hexagonal lenses. The spatial sampling is 0,25"/lens and the spectral resolution, set to R=3200. The [Fe II]
Publicado em: 2005
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6. SINGULAR RIEMANNIAN FOLIATIONS WITH SECTIONS AND TRANSNORMAL MAPS / FOLHEAÇÕES RIEMANNIANAS SINGULARES COM SEÇÕES E APLICAÇÕES TRANSNORMAIS
Um resultado clássico da teoria de grupos de Lie garante que as órbitas da ação adjunta de um grupo de Lie compacto interceptam um toro máximo ortogonalmente. Esta ação é um exemplo das chamadas ações polares. Ações polares são ações de grupos compactos de isometrias que admitem seções (subvariedades totalmente geodésicas que interceptam as
Publicado em: 2002
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7. Camada limite Amazonia: aspectos observacionais e de modelagem / Amazonian Boundary Layer: Numerical and observational aspects
The purpose of this work was to develop software to obtain Vegetation Index products for South America through images of the NOAA polar orbiting satellites, using the SITIM image processing equipment. Input data are the AVHRR sensor imagens in the visible (0.58 - 0.68 ) and near-infrared (0.72 - 1.1 ) spectral bands with 1.1 km spatial resolution reveived by
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/12/1995
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8. Camada limite Amazonia: aspectos observacionais e de modelagem / Amazonian Boundary Layer: Numerical and observational aspects
The purpose of this work was to develop software to obtain Vegetation Index products for South America through images of the NOAA polar orbiting satellites, using the SITIM image processing equipment. Input data are the AVHRR sensor imagens in the visible (0.58 - 0.68 ) and near-infrared (0.72 - 1.1 ) spectral bands with 1.1 km spatial resolution reveived by
Publicado em: 1995
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9. The Polar-Lethal Ovum Mutant Gene Maps to the Distal Portion of Mouse Chromosome 11
Genome imprinting is the process by which identical alleles at a particular locus may be rendered functionally different depending on the sex of the parent contributing the allele. While several mutations in imprinted genes have been defined, no variants in the regulatory system that gives rise to imprinting have been described. Here we report our genetic an
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10. Polarity Effects in the Hisg Gene of Salmonella Require a Site within the Coding Sequence
A single site in the middle of the coding sequence of the hisG gene of Salmonella is required for most of the polar effect of mutations in this gene. Nonsense and insertion mutations mapping upstream of this point in the hisG gene all have strong polar effects on expression of downstream genes in the operon; mutations mapping promotor distal to this site hav
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11. Multilocus Analysis for Gene-Centromere Mapping Using First Polar Bodies and Secondary Oocytes
Polar body and oocyte typing is a new technique for gene-centromere mapping and for generating female linkage maps. A maximum likelihood approach is presented for ordering multiple markers relative to the centromere and for estimating recombination frequencies between markers and between the centromere and marker loci. Three marker-centromere orders are poss
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12. Genetic regulation of the glyoxylate shunt in Escherichia coli K-12.
The expression of the glyoxylate shunt enzymes is required for growth of Escherichia coli on acetate or fatty acids as a sole carbon source. The genes for the two unique enzymes of the glyoxylate shunt, aceA and aceB, are located at 90 min on the E. coli K-12 genetic map. Polar mutations in the aceB gene eliminate aceA gene function, suggesting that these ge