Results 271 to 280 of about 308,277 (312)

The Effects of UV-B Radiation on Dinoflagellates

Journal of Plant Physiology, 1991
Summary Ultraviolet radiation, UV-B (280-320 nm), has harmful effects on marine phytoplankton. The presentexperiments were done to determine the effects of UV-B radiation on motility and growth of four marine motile dinoflagellates, Gyrodinium aureolum, Prorocentrum minimum, Heterocapsa triquetra and Scrippsiella trochoidea.
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Responses of Plants to UV-B Radiation

2001
General. 1. Is provitamin D a UV-B photoreceptor in plants? L.O. Bjorn, T. Wang. 2. (Poly)phenolic compounds in pollen and spores of plants as indicators of solar UV-B: a new proxy for the reconstruction of past solar UV-B J. Rozema, et al. 3. The direct effects of UV-B radiation (290-315 nm) on plant litter decomposing at four European field sites S.A.
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Effects of clouds and haze on UV‐B radiation

Journal of Geophysical Research: Atmospheres, 1996
An experiment was conducted over a 6‐month period in Research Triangle Park, North Carolina, to investigate the effects of clouds and haze on ultraviolet (UV) radiation. Data were collected using a Yankee Environmental Systems UVB‐1 pyranometer, an Eppley Laboratory Precision Spectral Pyranometer, and a SCI‐TEC Brewer spectrophotometer.
Jeral G. Estupiñán, Sethu Raman, Gennaro H. Crescenti, John J. Streicher, William F. Barnard   +4 more
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Atmospheric Evolution and UV-B Radiation

1982
The evolutionary role of ozone has potentially significant implications for the evaluation of the sensitivity of present ecosystems to ultraviolet radiation changes. The literature on the evolution of atmospheric oxygen and ozone is reviewed indicating that current understanding has the oxygen content of the atmosphere near zero until about 2 x 109 ...
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Effects of UV-B Radiation on Photosynthesis

1986
Several component reactions of photosynthesis, and net CO2 assimilation rates have been shown to be detrimentally affected by UV-B radiation levels equal to or above those presently received at various locations on the earth’s surface. Many of these studies, however, were completed under environmental conditions that deviated from ambient field ...
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Effect of UV-B Radiation on Leguminous Plants

2017
Sun is the primary source of energy for photosynthetic life on Earth. Ultraviolet-B (UV-B, 315–280 nm) radiation is a natural constituent of solar light reaching Earth’s surface due to the thinning of stratospheric ozone (O3) layer. Many studies have shown the harmful effects of UV-B on morphological, biochemical and physiological responses of plants ...
Krishna Kumar Choudhary, Shashi Bhushan Agrawal   +1 more
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Introduction to UV-B Radiation

2022
Renuka Sharma, Namita Singh
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Underwater Radiation Measurements: Consequences of an Increased UV-B Radiation

2006
Almost all outdoor living organisms are exposed to ultraviolet radiation (UV). Ecosystems experience from morning to evening a strong variation of UV intensity due to diurnal changes in solar elevation, which depends on latitude and time of the year. These changes are the most dominant factor causing short term variation in UV radiation on Earth.
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Radiation therapy‐associated toxicity: Etiology, management, and prevention

Ca-A Cancer Journal for Clinicians, 2021
Kyle Wang
exaly  

Modeling of Effects of UV-B Radiation on Animals

1994
Animal models employed in the study of photoimmunology have centered mainly on the mouse although some recent studies have used the American opossum (Monodelphis domestica), a non-placental mammal. Evidence now exists showing that humans also exhibit UV-induced immune suppression.
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