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Mostrando ítems 941-950 de 2495
Variabilidad del índice UV en la zona metropolitana de Guadalajara (ZMG) y su relación con los índices de contaminación durante el 2003.
(Instituto de Geografia Tropical (IGT), 2004)
Las zonas tropicales (como lo es el caso de la ZMG) son receptoras de altas intensidades de radiación solar alcanzando su máximo en el cenit (Fig. 1). En estas zonas el índice UV siempre presenta valores por arriba de 4. ...
Photochromic dynamics of organic–inorganic hybrids supported on transparent and flexible recycled PET
(2017-04-01)
Organic–inorganic hybrids (OIH) synthesized by sol gel process containing phosphotungstic acid (PWA) entrapped have been attracted much attention for ultraviolet sensitive materials. However, the limitations for practical ...
Queratitis superficial crónica.Chronic superficial keratitis.
(Universidad de Caldas, 2019)
Xanthophyll cycle activity and photosynthesis of Dunaliella tertiolecta (Chlorophyceae) and Thalassiosira weissflogii (Bacillariophyceae) during fluctuating solar radiation
(International Phycological Society, 2010-05)
Short-term ultraviolet (UV) radiation (280-400 nm) effects on xanthophyll cycle activity and photosynthesis were assessed during fluctuating irradiance (60- and 10-min cycles - saturating irradiance to near-zero irradiance) ...
Crecimiento y caracterización de cristales de KCL dopados con Europio para la Medición de la Radiación Ultravioleta (UV) procedente del Sol en la ciudad de Lima
(Universidad Inca Garcilaso de la Vega, 2015-09-24)
En los últimos años, se ha detectado un aumento considerable de la radiación ultravioleta (RUV) proveniente del sol que puede causar un incremento en los daños causados a la vida en el planeta, especialmente al hombre. ...
Padronização de cultura organóide cutânea e avaliação da resposta melanogênica no melasma ao UVB, UVA e luz visível.
(Universidade Estadual Paulista (Unesp), 2019-09-26)
FUNDAMENTOS: Melasma é hipermelanose crônica, focal, adquirida decorrente de patogênese não totalmente compreendida, resultado da alteração funcional e arquitetural dos melanócitos. A predisposição genética, aspectos ...
KatG, the bifunctional catalase of xanthomonas citri subsp. Citri, responds to hydrogen peroxide and contributes to epiphytic survival on citrus leaves
(Public Library of Science, 2016-03)
Xanthomonas citri subsp. citri (Xcc) is the bacterium responsible for citrus canker. This bacterium is exposed to reactive oxygen species (ROS) at different points during its life cycle, including those normally produced ...
AtPDCD5 plays a role in programmed cell death after UV-B exposure in arabidopsis
(American Society of Plant Biologist, 2016-04)
DNA damage responses have evolved to sense and react to DNA damage; the induction of DNA repair mechanisms can lead to genomic restoration or, if the damaged DNA cannot be adequately repaired, to the execution of a cell ...