Luminous Intensity
Mostrando 13-21 de 21 artigos, teses e dissertações.
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13. Avaliação do laser Erbium : YAG na remoção dos nevos melanocíticos
Melanocytic nevi are commonly found in the population. They generally present a benign course but may reveal individuals with increased risk for melanoma or even suffer malignant transformation. They are frequently considered unattractive to look and patients often desire to treat them. The standard treatment of melanocytic nevi is the surgical removal. Howe
Publicado em: 2006
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14. Efeitos da intensidade luminosa, fontes de nitrogênio e níveis de ferro no crescimento de Cylindrospermopsis raciborskii (UFV-P01) (Nostocales, Cyanobacteria) / Effects of luminous intensity, source of nitrogen and level of iron in the growth of Cylindrospermopsis raciborskii (UFV-P01) (Nostocales, Cyanobacteria)
Foram investigados os efeitos das interações entre diferentes intensidades luminosas, fontes de nitrogênio (N) e níveis de ferro (Fe) em culturas unialgais, de Cylindrospermopsis raciborskii, uma cianobactéria potencialmente tóxica, sob cultivo em laboratório. Os isolados foram obtidos em um tanque de piscicultura do Departamento de Biologia Animal da
Publicado em: 2006
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15. Fenologia e anatomia dos órgãos reprodutivos de Catasetum fimbriatum Lindley cultivados sob diferentes intensidades luminosas. / Fenology and anatomy of the reproductive organs of Catasetum fimbriatum Lindley cultivated under different luminous intensities.
As attempt of elucidating the environmental factors that they control the plasticity floral fenotipic of Catasetum fimbriatum Lindley, fenological, vegetative and anatomical studies of the species began, through of the accompaniment of 45 individuals. Thirty of these individuals were collected and put in the vases later. The other ones 15 already existed nat
Publicado em: 2002
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16. K+/Na+-triggered bioluminescence in the oceanic squid Symplectoteuthis oualaniensis
A distinctive type of luminescent system present in the large dorsal luminous organ of the oceanic squid Symplectoteuthis oualaniensis is described. The organ produces an intense blue flash of light followed by a rapid decay in light intensity. Luminescence originates from numerous oval granules present in the luminous organ. The essential light-emitting com
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17. ATP-dependent bioluminescence in the firefly squid, Watasenia scintillans
The Japanese firefly squid, Watasenia scintillans, emits intense flashes of light from three tiny luminous organs that are located at the tip of each of a pair of ventral arms. Light is also produced from hundreds of other minute organs that are scattered over the body. The luminescence is due to an ATP-dependent reaction, with an optimal pH of 8.80. The dec
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18. Yellow light emission of Vibrio fischeri strain Y-1: purification and characterization of the energy-accepting yellow fluorescent protein.
A strain of luminous bacteria, Vibrio fischeri Y-1, emits yellow light rather than the blue-green emission typical of other luminous bacteria. The yellow emission has been postulated previously to result from energy transfer from an electronically excited species formed in the bacterial luciferase-catalyzed reaction to a secondary emitter protein, termed the
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19. Myristic acid stimulation of bacterial bioluminescence in "aldehyde" mutants.
The involvement of long chain aldehyde in bacterial luminescence was known both from its being required for light emission in the in vitro reaction with pure luciferase and from its ability to stimulate luminescence in vivo in a certain class of dark "aldehyde" mutants. We have found that the luminescence of some (but not all) of such aldehyde mutants is als
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20. A Bioluminescence Assay Using Nitrosomonas europaea for Rapid and Sensitive Detection of Nitrification Inhibitors
An expression vector for the luxAB genes, derived from Vibrio harveyi, was introduced into Nitrosomonas europaea. Although the recombinant strain produced bioluminescence due to the expression of the luxAB genes under normal growing conditions, the intensity of the light emission decreased immediately, in a time-and dose-dependent manner, with the addition o
American Society for Microbiology.
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21. Isolation of the in vivo emitter in bacterial bioluminescence
A blue fluorescence protein has been isolated and purified from extracts of the luminous bacterium Photobacterium phosphoreum. It is a single polypeptide of molecular weight 22,000 with absorption maxima at 274 and 418 nm. It is efficiently fluorescent (ϕF 0.45), with a fully corrected spectral maximum (476 nm) and distribution identical to the in vivo biol