行业动态

涂料行业“十二五”发展思路确定 在日前召开的“水性木器涂料环境经济政策推进研讨会”上，工业和信息化部规划司姚瑁处长表示，“十二五”期间，我国涂料行业将围绕一个目标，即提升整体竞争力；一条主线，即产业升级和结构调整，实现由注重规模向注重质量和效益转变、由跟踪模仿向自主创新转变、由生产制造向品牌和服务转变、由高耗能、高污染向资源节约、环境友好转变等五大转变，由大变强。今年，涂料行业中央技改专项投入达12．4亿元。“十二五”期间，国家还将加大对涂料行业的技改投入。     

景德镇陶瓷产业生产规模现状分析与对策

本文从分析景德镇陶瓷产业生产规模现状入手,指出实现规模经济的意义与对策     

改革管理机制实现规模经济──化工企业实现两个根本转变的关键

通过对不同类型企业的具体分析指出，实行现代企业制度改造及实现装置生产的规模经济，是当前化工行业实现两个根本转变的关键     

日本太阳能电池产业发展迅猛

日本经济产业省近日预计，由于日本企业不断在国内外扩大太阳能电池生产规模，到2020年日本制太阳能电池在全球市场的占率可望由目前的25％提高至33％，日系企业太阳能发电相关产业规模也将达到10兆（100万亿）日圆大关，为目前的10倍。     

化工新材料产业面临发展良机

新材料产业被认为是21世纪三大最具发展潜力的高技术产业之一。据保守估算，现今世界上各种新材料市场规模每年已超过4000多亿元，由新材料研究产生的新技术和由新技术制成的新产品则有着更大的市场。近日，记者从2007博鳌国际化工新材料论坛上获悉，当前我国的新材料产业在国际产业布局中正处于由低级阶段向高级阶段发展的过程。     

规模经济对项目竞争力的影响

阐述了项目规模经济来源于项目的建设过程和运营过程，不同项目的规模经济来源是不同的。由于项目的开工率、运输成本、技术限制、需求的多样化等原因，项目的规模不能无限扩大。     

坚持管理与科技两个轮子齐驱动

大乘资氮集团有限公司狠抓管理和科技，使企业由经营向效益型转变，同时加速了企业经济增长方式的转变。     

全球染化行业最大专业展之亚洲巡展第一站-印度

为了加快转变中国染料工业发展方式,实施“走出去”发展战略,染料工业在“十二五”期间的发展必须由依靠资源开发向产业结构提升转变,由注重经济规模向注重发展质量转变,由追求经济增长向追求全面发展转变。实现发展方式转变,将是我国染料工业“十二五”时期面临的艰巨任务。     

扩大开放新体制给化企增添新动力

改革开放35年来，中国经济已经成为世界经济密不可分的一部分，中国的石油和化学工业在越来越宽松的政策和市场环境中也取得了长足的进步，无论是产业规模还是发展速度在国际上都名列前茅。中国石化行业与国际市场的深度融合，带来的联动效应已经成为影响产业发展的重要因素之一。     

合成橡胶产业发展隐患让人忧

近年来，合成橡胶产业的发展态势让人欣喜。数据显示，去年国内合成橡胶工业年产量可达339万吨，稳居全球首位。随着生产规模的不断扩大，合成橡胶产业将在我国产业经济中将占据更加重要的地位。     

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。     

Denitrification in shallow groundwater in a coastal agricultural area in Japan

In a coastal agricultural area in the central part of Japan (Shizuoka), we found decreasing nitrate concentration with depth in a shallow groundwater, where the depth to water table varied between 0.6 and 1.2 m below ground surface. High nitrate concentrations (5–29 mg N L^–1) were often observed in the upper layer (0–2 m) of the groundwater, but the concentration decreased to less than 1 mg N L^–1 in the deeper layer. Ammonium was scarcely detected, and the concentration of dissolved oxygen was usually low (< 1 mgO₂ L^–1) in the groundwater. Nitrate in the groundwater often had very heavy nitrogen stable isotope ratios (>20{}). There was a negative relationship between nitrogen stable isotope ratio of nitrate and its concentration. When nitrate was injected into the groundwater with acetylene and bromide (a conservative tracer), nitrate concentration decreased to 20% of the initial level within 5 days, accompanied by the increase in nitrite and nitrous oxide concentration and a little change in bromide concentration. These results indicate that microbial denitrification plays a potential role in the decrease of nitrate in shallow groundwater at the study site.     

我国硝酸工业生产技术新进展

系统叙述了我国硝酸工业2000-2007年生产现状及主要技术成果,尤其指出了国产"四合一"机组的成功投运,使我国硝酸国产化装置取得较大的进步,表现在吨酸的铂耗、氨耗和能耗等方面接近国外引进装置水平,同时介绍了国外双加压法硝酸生产技术的进展.我国已成为硝酸生产大国,仍需以先进的技术改造和发展我国硝酸工业,确保我国硝酸工业健康有序地发展,加快从硝酸生产大国向强国迈进的步伐.     

高效液相色谱法分析化妆品中微量成分的研究进展

综述了高效液相色谱法在化妆品中防腐剂、防晒剂中紫外线吸收剂以及性激素的检测等几个方面的应用;同时,介绍了分析所用的色谱柱、流动相、使用的检测手段以及样品的提取方法;最后针对目前存在的问题,提出了高效液相色谱用于化妆品中微量成分分析的研究方向和发展前景。