中化信有机硅信息部依托本社正式成立

经过一年多的筹备,中国化工信息中心有机硅信息部依托本杂志社于2008年12月23日正式宣布成立。在热心读者支持下,2008年我们共出版了4期有机硅专刊与3期CSN英文专刊,建设了有机硅中文网和英文网,召开了有机硅和多晶硅两个会议,邀请了近40位专家发言,共有超过400名行业     

2008年国内有机硅进展

根据2008年公开发表的相关资料,综述了我国有机硅行业的发展概况及有机硅产品的研发进展.     

星火有机硅国家标准获创新贡献奖

由江西星火有机硅厂主持起草的有机硅产品八甲基四硅氧烷国家标准近日获2008年中国创新贡献奖三等奖。 八甲基四硅氧烷国家标准于2006年11月1日开始在全国有机硅行业实施。该标准的实施结束了中国有机硅没有国家标准和行业标准的历史,提高了中国有机硅在世界有机硅行业的话语权,满足了产业发展需要。     

星火有机硅国家标准获创新贡献奖

由江西星火有机硅厂主持起草的有机硅产品八甲基四硅氧烷国家标准近日获得2008年中国创新贡献奖三等奖。     

中控中标新安迈图有机硅一体化项目

2008年12月30日,中控技术股份公司相继签约浙江新安迈图有机硅有限公司10万t／a有机硅一体化项目和江苏兄弟化学公司6万t/a有机硅项目。     

氟硅产业靠自力更生挺起脊梁

预计2010年以后,中国将成为全球最大的有机硅产品消费市场。PTFE产能达5万多吨,成为全球氟硅材料的生产和消费大国。1955年,中国生产出最早的有机硅产品;2008年,我国有机硅单体产能达80多万吨,     

有机硅行业投资价值分析报告

性能卓越的有机硅行业刚刚起步，新材料替代效果明显，奠定其需求快速增长的基础。1970—1988年日本有机硅产量增速是GDP的三倍，90年代仍保持20％以上的增长。美国有机硅年需求增速在2008年以前也仍有6％。     

行业动态

从4月1日起提高轻纺等商品的出口退税率,蓝星新材公布2008年年报,宏达新材公布2008年年报,2008年东爵有机硅集团硅橡胶总销量超过30kt.     

新安化工与迈图100kt／a有机硅项目开工

新安迈图100kt／a有机硅项目2008年6月19日在马目有机硅基地正式开工建设。浙江省省委、建德市市委部分领导及新安化工集团董事长王伟出席了开工典礼。     

行业动态

从4月1日起提高轻纺等商品的出口退税率,蓝星新材公布2008年年报,宏达新材公布2008年年报,2008年东爵有机硅集团硅橡胶总销量超过30kt.     

Metabolism of trideuterated iso-lignoceric acid in rats in Vivo and in human fibroblasts in culture

Saturated very long chain fatty acids (fatty acids with greater than 22 carbon atoms; VLCFA) accumulate in peroxisomal disorders, but there is little information on their turnover in patients. To determine the suitability of using stable isotope-labeled VLCFA in patients with these disorders, the metabolism of 22-methyl[23,23,23-²H₃]tricosanoic (iso-lignoceric) acid was studied in rats in vivo and in human skin fibroblasts in culture. The deuterated iso-VLCFA was degraded to the corresponding 16- and 18-carbon iso-fatty acids by rats in vivo and by normal human skin fibroblasts in culture, but there was little or no degradation in peroxisome-deficient (Zellweger’s syndrome) fibroblasts, indicating that its oxidation was peroxisomal. Neither the 14-, 20-, and 22-carbon iso-fatty acids nor the corresponding odd-chain metabolites could be detected. In the rat, the organ containing most of the iso-lignoceric acid, and its breakdown products, was the liver, whereas negligible amounts were detected in the brain, suggesting that little of the fatty acid crossed the blood-brain barrier. Our data indicate that VLCFA labeled with deuterium at the ω-position of the carbon chain are suitable derivatives for the in vivo investigation of patients with defects in peroxisomal β-oxidation because they are metabolized by the same pathways as the corresponding n-VLCFA. Moreover, as iso-VLCFA and their β-oxidation products are readily separated from the corresponding n-fatty acids by normal chromatographic procedures, the turnover of VLCFA can be more precisely measured. A preliminary report of part of this work (Reference 18) was presented at the 5th International Symposium on the Synthesis and Applications of Isotopes and Isotopically Labelled Compounds, Strasbourg, France, June 20–24, 1994.     

佛山市顺德新城区降水中污染物的监测和分析

为掌握佛山市顺德新城区降水中污染物的情况,2015年7月至8月,文章作者分别在雨天进行了降水取样,对降水中的pH、电导率、常见阴离子(F-、Cl~-、NO_3~(2-)、SO_4~(2-))及部分重金属(铅和镉)进行监测分析。选择有相关数据的珠江三角洲和石家庄、厦门等地的降水中污染物的情况进行对比。结果表明,顺德新城区降水中的p H和部分阴离子浓度优于珠江三角洲平均值,酸雨类型属于硫酸和硝酸混合型;其水体洁净程度略差于石家庄;铅和镉的浓度也高于厦门,甚至部分超出了人体能直接接触的安全范围。     

中国粉末涂料行业发展现状之2014

根据国家统计局以及国内外相关机构的数据统计资料,按照自2004年以来的相同数据统计口径,以原材料消耗为基础,编制出我国粉末涂料行业年度数据统计报告,以期为政府制定相关产业政策,企业制定发展规划提供翔实的数据支撑。     

Phospholipid metabolism in cells in culture

The proportions of the different lecithin fractions have been determined in HeLa and KB tissue culture cells and Ehrlich Ascites tumor. 82.8% of the total phosphatidyl choline phosphorus is found in fraction 3 of HeLa cells. The major phosphatidyl cholines found in KB cells and Ehrlich Ascites tumor are in fractions 3 and 4 and representing 66.6% and 88.7% of the total phosphatidyl choline P, respectively. The incorporation of 1,2-¹⁴C-choline and 1,2-¹⁴C-ethanolamine into the various phosphatidyl choline fractions has been assayed to determine their biosynthesis in Ehrlich Ascites tumor. The incorporation of 1,2-¹⁴C-choline into fractions 3 and 4 is 100 times the 1,2-¹⁴C-ethanolamine. This evidence indicates that the methylation pathway of phosphatidyl choline synthesis is very low in HeLa, KB and Ehrlich Ascites cells. One of 13 papers presented at the symposium “Lipid Metabolism in Cells in Culture,” AOCS Meeting, Houston, May 1971. Part of a thesis submitted to the Graduate School of the University of North Dakota in partial fulfillment of the Degree of Master of Science.