塑料镜片材料的发展动向

概述光学塑料的基本材料，讨论塑料镜片材料的主要品种及其应用，并着重分析影响塑料镜片材料性能的主要因素及其发展趋势。     

Impacts of plastic products used in daily life on the environment and human health: What is known?

Plastics are indispensable and persistent materials used in daily life that can be fragmented into micro- or nanoplastics. They are long polymer chains mixed with additives that can be toxic when in contact with distinct species. The toxicity can result from polymer matrix, additives, degradation products and adsorbed contaminants. Notwithstanding, there is still an immense gap of information concerning the individual and mixed impacts of plastics. Hence, in this study, we characterize the most common plastic materials widely used in our daily life by its polymer type and compile the environmental and human health hazards of these polymers including the impacts of monomers, additives, degradation products and adsorbed contaminants based on literature review. In summary, polyvinyl chloride is the most toxic polymer type used daily (monomer and additives); additives are more toxic than monomers to wildlife and humans; and the most toxic additives are benzene, phthalates and lead stabilisers.     

战创伤涂膜剂对厌氧菌体外抗菌实验研究

目的测定战创伤涂膜剂对产气荚膜梭菌（有芽孢菌）和脆弱拟杆菌（无芽孢菌）标准菌株的最低抑菌浓度（minimum inhibitory concentration,MIC）和最低杀菌浓度（minimum bactericidal concentration,MBC）。方法应用培养基将涂膜剂、氯已定甲硝唑乳膏稀释至不同浓度,分别加入产气荚膜梭菌和脆弱拟杆菌悬液,控制菌液浓度为10^5 efu／ml,厌氧培养后观察细菌生长情况,确定两药的MIC和MBC并进行比较。结果涂膜剂体外对脆弱拟杆菌、产气荚膜梭菌MIC均为1μg／ml,MBC分别为1μg／ml、2μg/ml。氯已定甲硝唑乳膏对脆弱拟杆菌、产气荚膜梭菌MIC分别为4μg／ml、1μg／ml,MBC为8μg／ml、2μg／ml。两药杀菌率均〉99％。结论涂膜剂对有芽孢和无芽孢类厌氧菌有良好的抑落、杀菌作用。     

正交试验优选雷公藤涂膜剂的基质组成

目的 优选雷公藤涂膜剂基质的组成和配比。方法 采用正交试验法,以外观质量、成膜时间为指标,确定基质中不同辅料的最佳配比。结果 以聚乙烯醇-124、CMC-Na、甘油比例为4∶1∶2制得的涂膜剂最稳定。结论 优选得到的配方设计合理,制备工艺简单,质量可控,可以为工业生产提供理论基础。     

颜面部皮肤肿瘤的切除与整形修复

目的探讨面部肿瘤的手术治疗和相关整形修复问题。方法综合分析2002年1月至2004年12月收治的217例面部皮肤肿瘤患者的临床资料。结果面部良性肿物在年轻人以皮脂腺囊肿多见,老年人则以色素痣和脂溢性角化为主。恶性肿瘤多见于老年人,以基底细胞癌和鳞状细胞癌为主。治疗以直接切除缝合、转移皮瓣和植皮修复,术区外形和功能良好。结论将整形治疗原则应用于面部肿物的治疗,根据患者具体情况制定个体化的治疗方案,可以取得良好的治疗效果。     

Determination of Trace Metals Using Laser Induced Breakdown Spectroscopy in Insoluble Organic Materials Obtained from Pyrolysis of Plastics Waste

Laser induced breakdown spectroscopy (LIBS) was applied for the detection of trace elements in non-degradable part of plastics known as insoluble organic material, obtained from thermal and catalytic degradation of plastics. LIBS signal intensity for each metal measured in the test sample was unique and different. The capability of this technique is demonstrated by analyzing various trace metals present inside plastics and also compared with ICP results. The metal concentration (ppm) measured with LIBS and verified by ICP for Ag (901), Al (522), Fe (231), Co (628), V (275), Ni (558), Pb (325), Mn (167) and Cd (378) are higher than permissible safe limits.     

肥厚型睑松弛症的手术治疗分析

目的：探讨眼睑松弛症的手术方法。方法：对15例（26眼）不同并发症肥厚型眼睑松弛症患者予以不同的手术治疗。结果：随诊6个月～2年。15例（25眼）眼睑皮肤松弛明显改善,1例1眼仍残留部分泪腺脱垂。结论：手术效果确切安全,但手术应避开反复水肿期。     

Migration of impurities from a multilayer plastics container into a parenteral infusion fluid

Plastics materials are commonly used in the packaging of pharmaceutical products, especially for the parenteral solutions. Thereby, the study of the compatibility of these containers with different contents is required for drug registration. This paper describes the migration phenomena which occurred between a tri-laminated film and a parenteral solution of metronidazole at 0.5%. The main migration products found in the solution were -caprolactam and a phthalic derivative. Several non-identified compounds were separated, coming from the polyurethane adhesive. However the aromatic amines were not detected. Thereby, it is important to study the compatibility of these containers with different contents. In addition, we have disclosed traces of butylhydroxytoluene, which constitute a degradation product of Irganox 1010 (phenolic antioxidant).