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紫外荧光二氧化硫分析仪中滤光器的优化 被引量:1
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作者 杜伟 何振江 韩鹏 《半导体光电》 CAS CSCD 北大核心 2013年第4期702-705,共4页
为了获得紫外荧光二氧化硫分析仪中所需的213.4nm激发光,研究了采用色散型紫外滤光器的参数优化,系统分析了装置中入射和出射狭缝对输出光的强度、稳定性及光谱纯度的影响,探讨了其物理机制,并通过实验得到了该装置中的最优参数为入射... 为了获得紫外荧光二氧化硫分析仪中所需的213.4nm激发光,研究了采用色散型紫外滤光器的参数优化,系统分析了装置中入射和出射狭缝对输出光的强度、稳定性及光谱纯度的影响,探讨了其物理机制,并通过实验得到了该装置中的最优参数为入射狭缝宽度50μm,出射狭缝宽度40μm。该结果对于提高仪器的准确性、灵敏度及长期稳定性等性能参数有重要意义。 展开更多
关键词 紫外荧光 二氧化硫分析仪 紫外滤光器
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Photoprotection-UV Filters: Properties, Use and Safety in Sun Products
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作者 Antonina Agolzer 《Journal of Pharmacy and Pharmacology》 2018年第9期817-824,共8页
Sunscreen application is a common strategy used to prevent the damage induced by UV radiations. In the last 30 years a variety of protective agents against UV exposure have been developed: physical filters, chemical ... Sunscreen application is a common strategy used to prevent the damage induced by UV radiations. In the last 30 years a variety of protective agents against UV exposure have been developed: physical filters, chemical filters and organic filters. Physical filters are the safest: they scatter and reflect UV rays, but are difficult to apply on the skin. Chemical filters are capable of absorbing these rays, they are cosmetically pleasant, but recent studies suggest a toxicological nature for some of these agents. Organic filters are the newest advance in sun products. Since 2003 the COLIPA Index [Europe] has regulated sun product availability on the market. In the USA, the FDA establishes the classification and the safety of sun products, which are considered topical medical drugs. This article summarizes the dermatologist's point of view, according to the patient's request, professional ethics and increasing offer of sun product. 展开更多
关键词 PHOTOPROTECTION UV filters skin cancer skin damage physical filters chemical filters organic filters
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