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Mostrando ítems 11-20 de 73
Solar UV-B radiation modifies the proportion of Volatile Organic Compounds in flowers of field-grown grapevine (Vitis vinifera L.) cv. Malbec
(Springer, 2014-03)
Ultraviolet-B solar radiation (UV-B) is an environmental signal with biological effects in different plant tissues. Recent investigations reported dramatic changes of terpenes with a protective role in plant tissues submitted ...
Solar UV-B radiation modifies the proportion of volatile organic compounds in flowers of field-grown grapevine (Vitis vinifera L.) cv. Malbec
(2014-11)
Ultraviolet-B solar radiation (UV-B) is an environmental signal with biological effects in different plant tissues. Recent investigations reported dramatic changes of terpenes with a protective role in plant tissues submitted ...
Structural, Energetic, and UV−Vis Spectral Analysis of UVA Filter 4‑tert-Butyl-4′-methoxydibenzoylmethane
(American Chemical Society, 2014-02)
The growing awareness of the harmful effects of ultraviolet (UV) solar radiation has increased the production and consumption of sunscreen products, which contain organic and inorganic molecules named UV filters that absorb, ...
Estudo de materiais e dispositivos para eletrônica orgânica
(Universidade Estadual Paulista (Unesp), 2018-02-23)
Atualmente, a eletrônica baseada em materiais orgânicos vem ganhando visibilidade no cenário científico e tecnológico devido à alta flexibilidade mecânica e baixo custo desses materiais. A fabricação de dispositivos ...
Spectral absorption by marine chromophoric dissolved organic matter: Laboratory determination and piecewise regression modeling
(Elsevier Science, 2017-08)
Chromophoric dissolved organic matter (CDOM) is an important light-absorbing component of seawater. Yet spectrophotometric determinations of CDOM absorption from existing laboratory methods differ substantially. Since CDOM ...
Estudio comparativo de dos sistemas de filtrado a base de residuos orgánicos de huevo y naranja para la retención de cromo hexavalente (Cr+6) de soluciones acuosas
(Escuela Superior Politécnica de Chimborazo, 2022-03-24)
The aim of this project was to carry out a comparative study of the hexavalent chromium retention in synthetic water using an eggshell organic waste-based filter and another orange peel-based filter. Each filter was built ...
Associação do filtro orgânico butil metoxi dibenzoil metano com o sistema óxido de zinco: óxido de titâmio (IV) para aplicação em protetores solares
(Universidade Estadual Paulista (Unesp), 2010-12-20)
A preocupação com a radiação ultra-violeta (UV) do espectro eletromagnético que atinge a superfície terrestre, devido ao aumento do índice de câncer de pele, tem incentivado a pesquisa de produtos para a proteção da pele. ...
Associação do filtro orgânico butil metoxi dibenzoil metano com o sistema óxido de zinco: óxido de titâmio (IV) para aplicação em protetores solares
(Universidade Estadual Paulista (Unesp), 2010-12-20)
A preocupação com a radiação ultra-violeta (UV) do espectro eletromagnético que atinge a superfície terrestre, devido ao aumento do índice de câncer de pele, tem incentivado a pesquisa de produtos para a proteção da pele. ...
Avaliação da toxicidade do fotoprotetor 2-etilhexil 4-metoxicinamato em Oreochromis niloticus e Astyanax altiparanae
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Ciência e Tecnologia AmbientalUTFPR, 2022-06-21)
2-Ethylhexyl 4-methoxycinnamate (EHMC) is an organic ultraviolet filter widely used in the formulations of personal care products and industrial products for photoprotection. Due to its heavy use, a significant level of ...
Photochemical responses of three marine phytoplankton species exposed to ultraviolet radiation and increased temperature: role of photoprotective mechanisms
(Elsevier Science Sa, 2014-10-22)
We carried out experiments using long-term (5–7 days) exposure of marine phytoplankton species to solar radiation, in order to assess the joint effects of ultraviolet radiation (UVR) and temperature on the photochemical ...