Solar Radiation Measurement
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Sunscreen lotions in the dermatological prescription: review of concepts and controversies
Abstract The skin is regularly exposed to several environmental aggressions, including solar radiation, whose biological effects can induce sunburn, dyschromia, skin aging and cancer. Among the photoprotection measures, sunscreens comprise a relevant part of the strategy aimed to prevent solar radiation damage and, for effective action, the patient must adhe
Anais Brasileiros de Dermatologia. Publicado em: 2022
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2. CFD simulation and measurement of the thermal behavior inside a room of the institutional library: a comparative study
Resumo Esse artigo apresenta os resultados da comparação entre a simulação CFD e as medições de temperatura, ambas no domínio do tempo, em um determinado ponto de interesse dentro de um espaço fechado específico (cubículo) da biblioteca institucional da Universidade Politécnica Salesiana (UPS), na sua sede na cidade de Cuenca, República do Equado
Ambient. constr.. Publicado em: 10/06/2019
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3. EMPIRICAL METHODS FOR ESTIMATING REFERENCE SURFACE NET RADIATION FROM SOLAR RADIATION
ABSTRACT Net radiation (Rn) of reference surface is important information that has many applications, but its measurement is rare due to the high cost of the sensor and the complexity involved on the measurement. Therefore, estimate Rn from another variable is desirable, as from solar radiation (Rs); however, standard methods used are complex, making interes
Eng. Agríc.. Publicado em: 2018-01
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4. Desempenho de um painel fotovoltaico de baixa tensão, acoplado ao protótipo de um conversor dc/dc topologia Booster
Low voltage solar panels increase the reliability of solar panels due to reduction of in series associations the configurations of photovoltaic cells. The low voltage generation requires DCDC converters devices with high efficiency, enabling raise and regulate the output voltage. This study analyzes the performance of a photovoltaic panel of Solarex, MSX mod
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/06/2010
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5. Estimativa de um índice de estresse hídrico para a cultura da cana-de-açúcar com base na temperatura foliar / Estimating of crop water stress index to sugarcane based on the canopy temperature
The objective of this work was to evaluate the behavior of leaf temperature and transpiration of sugarcane under different matric and meteorological conditions to estimate a crop water stress index (IEHC), which can be applied in irrigation management and estimates of productivity. Because of the need to apply water stress to plants, the experiment was condu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2010
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6. MEDIÃÃO DA EVAPORAÃÃO EM TANQUES CLASSE A INSTALADOS EM AMBIENTES AQUÃTICO E TERRESTRE / MEASUREMENT OF EVAPORATION IN A TANK CLASS SYSTEMS IN AQUATIC ENVIRONMENT AND LAND
As condiÃÃes climÃticas das regiÃes semi-Ãridas favorecem a evaporaÃÃo que representa a maior perda do volume lÃquido dos aÃudes, portanto, um parÃmetro importante para o gerenciamento dos recursos hÃdricos. Um dos instrumentos mais difundidos e utilizados para estimar a evaporaÃÃo em reservatÃrios à o Tanque Classe A. Assim, este trabalho tev
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/01/2010
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7. Algunos aspectos de la climatología solar del Uruguay
The spatial coverage of land measurement networks cannot fulfill all the user's needs because their density is low; and this fact becomes more important in the case of solar radiation. The scarcity of global irradiation data is the reason for using sunshine hours in order to estimate them through different correlations which have shown a good fit with the me
Revista Brasileira de Meteorologia. Publicado em: 2010-12
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8. Medições do saldo de radiação em copas de cafeeiros e limeiras ácidas por sistemas de integração espaço-temporal e estimativas por técnicas de modelagem / Measurements of net radiation of the canopy of coffee and acid lime trees in hedgerows by spatiotemporal integration systems and estimates by modelling techniques
The amount of radiant energy absorbed by the canopy of trees has great application in photosynthesis and transpiration research. Studies of radiation interception by the canopies of an isolated or a sequence of trees in hedgerows have been carried out by a technique which employs moving radiometers around an isolated tree (spherical geometry of measurement)
Publicado em: 2010
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9. Elastomeric nanocomposites based on MWCNTs : preparation, characterization, and applications / Nanocompositos elastomericos baseados em MWCNTs : preparação, caracterização, e aplicações
Polymeric nanocomposites based on carbon nanotubes (CNTs) have one of the highest technological potential due to the possibility of produce materials with improved mechanical properties, high electrical conductivity at low loadings (low percolation threshold), and good processability. These systems are versatile, may present astonishing properties, and are a
Publicado em: 2009
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10. Medição da Radiação Solar Global e Difusa Utilizando Piranômetros com Sensores Fotoelétricos / Medição da Radiação Solar Global e Difusa Utilizando Piranômetros com Sensores Fotoelétricos
No Brasil, a maior parte das Instituições que medem radiação solar disponibiliza apenas dados de radiação global incidente em uma superfície horizontal. Na região de Pelotas-RS, a Estação Agroclimatológica de Pelotas, vinculada à Embrapa, tem os dados de radiação solar global diária estimados desde 1971 até 1992 e medidos a partir de 1993. Co
Publicado em: 2008
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11. Estudo fÃsico-hÃdrico em lisÃmetros e comparaÃÃo de elementos climÃticos na regiÃo de Lavras - MG / Physical-hydric study in lisymeters and comparison between climatic elements at the region of Lavras, MG,
This work aimed to compare data obtained from conventional (EMC) and automatic (EMA) meteorological stations, and to compare different methods against the standard method for estimating the reference evapotranspiration (ETo), for the region of Lavras, Minas Gerais, Brazil. The EMC data, between 2005 and 2008, were obtained from National Institute of Meteorol
Publicado em: 2008
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12. Desempenho térmico de cobertura verde utilizando a grama Brachiaria humidicola na cidade de São Carlos-SP
This work aims to analyze the thermal behavior of a green roof with the Braquiária grass (Brachiaria humidicola), that reaches 1m height, comparing it with a traditional roof (concrete slab on show). Considering temperature and relative humidity data obtained through field measurements in different months, the thermal performance of the green and traditiona
Publicado em: 2007