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气力输送在PTA生产中的应用 被引量:2
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作者 朱龙波 《广东化工》 CAS 2016年第11期240-243,共4页
文章的主要目的是对PTA(精对苯二甲酸)的生产工艺中有关气力输送的部分作一总体的描述。其主要内容包括如下几个部分:(一)气力输送以及PTA的简单介绍;(二)PTA生产中气力输送系统的主要设备及功能;(三)PTA生产中气力输送系统主要设备的... 文章的主要目的是对PTA(精对苯二甲酸)的生产工艺中有关气力输送的部分作一总体的描述。其主要内容包括如下几个部分:(一)气力输送以及PTA的简单介绍;(二)PTA生产中气力输送系统的主要设备及功能;(三)PTA生产中气力输送系统主要设备的安装以及安装后的单机调试和系统调试。 展开更多
关键词 气力输送 PTA(精对笨二甲酸) 气控单元 旋转给料器 产品过滤器 料仓关键词
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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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