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油浸绝缘纸局部放电损伤产物分析 被引量:13
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作者 严家明 廖瑞金 +2 位作者 杨丽君 郝建 孙才新 《电工技术学报》 EI CSCD 北大核心 2011年第5期184-191,198,共9页
文章对局部放电损伤过程中油浸绝缘纸的表面生成物及气隙气体进行了分析。利用显微镜和扫描电镜分析了绝缘表面形貌;利用红外光谱仪和X射线光电子能谱仪研究了绝缘表面生成物及其组分;同时分析了气隙气体体积变化,并利用气质联动仪研究... 文章对局部放电损伤过程中油浸绝缘纸的表面生成物及气隙气体进行了分析。利用显微镜和扫描电镜分析了绝缘表面形貌;利用红外光谱仪和X射线光电子能谱仪研究了绝缘表面生成物及其组分;同时分析了气隙气体体积变化,并利用气质联动仪研究了气体组分及其含量。研究结果表明:局部放电损伤过程中,气隙气体体积和电负性气体含量交替下降上升,放电形式在脉冲放电和亚辉光(或辉光)放电之间交替转换;绝缘表面相继出现"表面液滴"和"晶状固体","表面液滴"主要为含C=O基团化合物,"晶状固体"主要为羧酸类物质,同时纤维素链中也有羧基生成;表面产物主要是裂解产物在局部放电作用下逐渐氧化的结果。 展开更多
关键词 局部放电 油浸绝缘纸 损伤 表面液滴 晶状固体 电负性气体
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AN EXPERIMENTAL STUDY OF THE INTERLEUKIN 1 LEVELS IN AQUEOUS HUMOR AFTER TRANSSCLERAL FIXATION OF INTRAOCULAR LENSES
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作者 周朝晖 何守志 《Chinese Medical Sciences Journal》 CAS CSCD 1998年第3期185-187,共3页
Purpose. To study the interleukin 1 (IL-1)levels in aqueous humor after transscleral fixation of in- traocular lenses (IOLs) implantation in rabbits and discuss the effect of IL-1 on postoperative anterior ocular infl... Purpose. To study the interleukin 1 (IL-1)levels in aqueous humor after transscleral fixation of in- traocular lenses (IOLs) implantation in rabbits and discuss the effect of IL-1 on postoperative anterior ocular inflammation. Methods. Twenty-seven pigmented rabbits were divided into three groups: GI, transscleral fixation of posterior chamber (PC) IOLs implantation; G2, Lens of rabbits were removed without IOLs implanta- tion; G3, the control group, without surgical intervention. On the 1st, 3rd, 7th and 14th postoperative days, aqueous humor samples were obtained. Methyl thiazolyl tetrazolium (MTT) colormetry was used to detected for the presence of IL-1. The data were analyzed by using analysis of variance of SAS soft ware. Results’ It was found that IL-1 level in aqueous humor was increased after transscleral fixation of I- OLs implantation, IL-1 level reached its maximum on the 14th postoperative days in the IOL implanted group. IL-1 levels on 1st, 3rd, 7th and 14th days postoperatively was significantly higher (P<0. 05) in I- OLs implanted group than that of only extracapsular lenses extraction but no IOLs implantation group and that of the none surgical intervention group. COnclusions.IL-1 levels increased had a close relationship with a specific response to IOL implanta- tion. The increase of IL-1 may be suggested as the principal mediators of immunological and inflammatory responses, so that may play critical role in anterior ocular inflammative response after IOL implantation. 展开更多
关键词 intraocular lens interleukin 1 anterior ocular inflammation
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