| selenium |
This metal is a nutritionally essential trace element that is toxic at higher doses. High levels of selenium have been shown to cause reproductive failure and birth defects in birds.
출처: www.sbcfire.org/hazmat/env_terms.asp
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| selenium |
enters surface waters as a result of weathering and erosion of soils and discharge from copper and lead refineries and municipal wastewater.
출처: www3.gov.ab.ca/env/water/SWQ/faqs04.cfm
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| selenium |
Selenium is an essential trace mineral. Selenium activates an antioxidant enzyme called glutathione peroxidase, which may help protect the body from cancer. Yeast-derived forms of selenium have induced "apoptosis" (programmed cell death) in cancer cells in test tubes and in animals. One study found that men consuming the most dietary selenium developed 65% fewer cases of advanced prostate cancer than did men with low levels of selenium intake.
출처: www.nutritiondata.com/glossary.html
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| selenium |
A naturally occurring element essential to human and animal sustenance. However, selenium is toxic at little over the suggested nutritional levels. Selenium is used in a variety of products, is a bi-product of many industrial activities, and is leached from the soil and becomes agricultural runoff.
출처: www.abag.ca.gov/bayarea/sfep/reports/ccmp/ccmpappb...
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| selenium |
(Se) - A non-metallic element, atomic number 34, atomic weight 78.96. Its electrical resistance varies under the influence of light. A selenium cell consists of thin strips of selenium between two metal elctrodes.
출처: www.abheritage.ca/telephone/glossary.html
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