نتایج جستجو برای: ultraviolet spectrophotometry

تعداد نتایج: 48877  

Journal: :Environmental toxicology and chemistry 2008
Mace G Barron Deborah Vivian Susan H Yee Steve A Diamond

Solar irradiance (W/m2) and downwelling diffuse attenuation coefficients (Kd; 1/m) were determined in several locations in Prince William Sound (AK, USA) between April 2003 and December 2005 to assess temporal and spatial variation in solar radiation and the risks of photo-enhanced toxicity from spilled oil. Weekly irradiance measurements of surface visible light, ultraviolet B (UVB), and ultra...

Journal: :Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) 1975

Journal: :Ecological applications : a publication of the Ecological Society of America 2007
Donna R Kashian Robert E Zuellig Katharine A Mitchell William H Clements

The ability to tolerate disturbance is a defense strategy that minimizes the effects of damage to fitness and is essential for sustainability of populations, communities, and ecosystems. Despite the apparent benefits of tolerance, there may be an associated cost that results in a deficiency of a system to respond to additional disturbances. Aquatic ecosystems are often exposed to a variety of n...

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