镇海石化产业规模将达1800亿元

"十二五"时期,宁波镇海以发展临港大工业推动石油海关产业集群建设,择优发展石化精加工和生物化工产品以及石化资源性产品,积极推进石化产业向产品精深化、产业延伸化、价值高端化发展,努力打造成为年产值1800亿元的石化产业体系。     

产业集群背景下中小型化工企业的物流管理优化——评《化工物流运输管理》

产业集群视野下,化工行业的聚集化发展也越来越显著.现阶段,越来越多的地区兴建了大型化工产业园,囊括了许多中小型化工企业.化工企业的产业集群化发展宗旨就是为了进一步优化化工生产链条,促进绿色化工的可持续发展.适应产业集群发展,是当前中小型化工企业发展和管理的必需.     

生物化工将成为新的经济增长点

作为一项新兴的产业,生物化工产业在下世纪将成为一个新的经济增长点.为此,国家已将生物化工列为化学工业发展重点,并争取在2010年前取得以下进展:     

横向耦合纵向延伸推进氯碱产业集群化发展

介绍国内外氯碱产业现状。指出国内氯碱产业发展策略——整合资源,发展产业集群化。详细介绍了新材料集群、氟硅化工、精细化工和杀菌剂产业的集群化发展可行性和工艺链。     

归纳组合式包装在醴陵艺术瓷上的创新运用——“件包装”概念的应用

湖南醴陵陶瓷从东汉至今已有上千年历史,醴陵釉下五彩瓷被誉为中华艺术之瑰宝.湖南醴陵陶瓷产业的集群化发展趋势已经形成,但尚处于集群发展的早期阶段.与其相配套的陶瓷包装也是大一统的包装形式,无法满足当今社会的需要也表现不出红色官窑的艺术价值.鉴于此,本文将在分析醴陵陶瓷产及其包装现状和问题的基础上,提出进一步改善促进其发展的方法建议.     

生物化工产业发展概述

生物产业是我国战略性新兴产业之一,也是21世纪创新最为活跃、影响最为深远的新兴产业。生物化工作为生物产业的重要组成部分,将传统化工与生物产业结合,开辟了新的发展方向和思路,对我国传统化工产业转型升级、打造经济增长新动能、推进可持续绿色发展具有重要意义。     

淄川陶瓷产业被认定为省级产业集群

近日,山东省中小企业办公室公布了第三批山东省级产业集群名单,淄川区陶瓷产业集群位列其中,成为本次淄博市唯一成功入选的产业集群。这将推动淄川陶瓷产业的集群化发展,加快陶瓷产业结构调整和优化升级步伐。     

扬中推动硅材料产业向基地化发展

据悉，扬中市2007年排定了115个工业项目，计划总投资111．2亿元，主要投资方向为电力电器、硅材料和船舶制造，推动这个市的电力电器产业向高端化发展，硅材料产业向基地化发展，船舶制造产业向集群化发展。     

更好贯彻“深加工,扩应用”方针

围绕贯彻"深加工,扩应用"方针,分析我国玻纤工业形势并介绍国外一些成功经验。重点介绍了占玻纤总用量1/4左右的电绝缘领域的发展情况,提出了在国家着重发展城镇化、工业化、信息化、农业现代化战略经济条件下,注意产业集群的提升转型,将推动玻纤工业的可持续化发展。     

略论我国生物化工产业的发展

本文介绍了国内外生物化工产业的现状，分析了我国生物化工产业发展中存在的问题，提出了今后的主要任务及所应采取的对策。     

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。     

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.     

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。     

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.