Luminous Intensity
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Towards the micropropagation of Euphorbia cyathophora Murray: a wild plant species with medicinal and ornamental potential
RESUMO: Euphorbia cyathophora Murray é uma espécie vegetal com potencial medicinal e ornamental, mas cuja propagação in vitro é desconhecida. Dois experimentos foram realizados para conhecer 1) o efeito da luz (WL) a 25±2 °C e 20 μmol m-2 s-1 intensidade luminosa, ou escuridão a 20±2 °C, nos primeiros 20 dias e posterior colocação em luz (DKL)
Cienc. Rural. Publicado em: 02/09/2019
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2. Temperature influence on mobility and charge density model of photovoltaic cells
abstract Photovoltaic (PV) devices that capture the energy provided by the sun have great potential as renewable energy sources. However, the input parameters such as the luminous intensity and temperature of the solar cells tend to influence the operating characteristics in the solar panels. The inherent physical processes that cannot be altered limit the e
Rev. Bras. Ensino Fís.. Publicado em: 18/02/2019
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3. FORM OF LAYING HENS EGGS IN THE FUNCTION OF DIFFERENT LAMPS USED IN PRODUCTION
ABSTRACT: Lighting, either in its intensity or in its luminous spectrum, affects the eggs quality. This study evaluated the effect of four lamps (sodium vapor lamp, mercury vapor lamp, fluorescent lamp and incandescent lamp) that have different luminous spectra in the form of commercial poultry eggs. For this, 60 laying hens of the same age were separated fo
Eng. Agríc.. Publicado em: 2017-09
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4. Síntese e caracterização de misturas poliméricas condutoras para aplicação em membranas biodegradáveis e dispositivos eletroluminescentes / Synthesis and characterization of conducting polymeric blends for use in biodegradable membranes and electroluminescent devices
The electrical properties of some conducting polymers and their blends have contributed to the technological advancement in various areas such as medicine and microelectronics. Recently, photochemical synthesis and spinner techniques have been using to prepare polymeric blends with good conducting properties. In this study we report the preparation of conduc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/08/2012
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5. Cartografia luminosa de um território em trânsito
Cartography, inventing trajectories, giving way to affections and touch. Considering photography a method, this thesis project/process works as a device of luminous register, in the attempt of retorting the poetry of the instant. A Turner becoming, a tempest, wind, cloud becoming, wave. The luminous instant is cut out by the image register, and it draws a vo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/10/2011
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6. Medida da visão em candelas: description of a psychophysical technique to quantify luminous intensity
OBJETIVO: Desenvolver um método e um dispositivo para quantificar a visão em candela (cd). Os estudos de medida da visão são importantes para todas as ciências visuais. MÉTODOS: É um estudo teórico e experimental. Foram descritos os detalhes do método psicofísico e da calibração do dispositivo. Foram realizados testes preliminares em voluntários
Arquivos Brasileiros de Oftalmologia. Publicado em: 2011-04
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7. Photometric procedure for quantitative analysis of Aflatoxin B1 in peanuts by thin-layer chromatography using charge coupled device detector
A photometric procedure was developed for determination of aflatoxin B1 in peanuts by TLC-CCD technique. The quantification and detection limit were 1.2 μg kg-1 and 0.4 ng per spot, respectively, with mean recovery of 98%. The CCD camera is sufficiently sensitive to detect small changes in spots fluorescence intensity and the results for performance confirm
Química Nova. Publicado em: 2010
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8. Study of environment conditions of Arthrospira (Spirulina) platensis culture in tubular photobioreactor using fed-batch process with urea as nitrogen source / Estudo das condições ambientais no cultivo de Arthrospira (Spirulina) platensis em fotobiorreator tubular por processo descontínuo alimentado com uréia como fonte de nitrogênio
The cyanobacterium Arthrospira (Spirulina) platensis, ones of the most studied and cultivated photosynthetic microorganisms in the planet, has a unique biomass composition that includes: high protein content, polyunsaturated fat acids, natural pigments and other substances of interest in food, pharmaceutical and cosmetic industries. Recent studies demonstrat
Publicado em: 2010
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9. Ecofisiologia de Cyatheaceae (Monilophyta): fenologia, banco de esporos, anatomia e germinaÃÃo
The objective of this study was: to define the fenolÃgico standard of the species of Cyatheaceae, to evaluate the formation of the bank of spores of Cyatheaceae in the of Atlantic Forest of the RPPN of Frei Caneca, to the long one of the year, to define excellent conditions of growth of the species, and also to define anatomical standard of fronds of two sp
Publicado em: 2008
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10. AvaliaÃÃo da intensidade luminosa na germinaÃÃo e no desenvolvimento iniciaà de leucena (Leucaena leucocephala (Lam) de Wit.) / Evaluate the effects of light intensities upon the germination and initial development of leucena (Leucaena leucocephala (Lam) de Wit.)
O presente trabalho teve por objetivo avaliar o efeito de diferentes intensidades luminosas, proporcionadas por sombreamento natural em Ãrea de preservaÃÃo permanente, no desenvolvimento inicial de mudas de leucena. O experimento foi conduzido na Ãrea de CaptaÃÃo 1 do ServiÃo AutÃnomo de Ãgua e Esgoto de Marechal Candido Rondon â PR, no perÃodo de
Publicado em: 2008
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11. CONCEPÇÃO, CONSTRUÇÃO E AVALIAÇÃO DE FOTORREATORES CATALISADOS NA DEGRADAÇÃO DE CARGA POLUENTE E AMOXICILINA EM EFLUENTE HOSPITALAR
The focus of this study was the application of advanced oxidation photoprocesses, heterogeneous photocatalysis and photo-Fenton, in the degradation of pollutant load and amoxicillin in wastewater from the University Hospital of Santa Maria (HUSM), evaluating the photoreactors performance in the degradation efficiency. In the hospital wastewater there is a wi
Publicado em: 2008
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12. Tool wear monitoring in the milling process by acoustic emission / Monitoramento do desgaste de ferramenta no processo de fresamento via emissÃo acÃstica
The main goal of this work is the development of techniques for application of acoustic emission signal in tool wear monitoring in face milling operation. In this work a Sensis (DM 42) equipment for acquisition of the acoustic emission signal was used during the milling of a high strength low alloy steel (Din 38MnS6). A milling cutter with 125 mm diameter fo
Publicado em: 2007