共查询到20条相似文献,搜索用时 187 毫秒
1.
2.
3.
《玻璃钢/复合材料》2012,(1):121
全球生命科学与材料科学公司荷兰皇家帝斯曼集团2011年10月17日宣布其中国科技中心正式成立。帝斯曼中国科技中心的成立彰显了帝斯曼致力于在华长期发展的信心和承诺,标志着帝斯曼在中国历经近五十年的发展后, 相似文献
4.
全球生命科学与材料科学公司荷兰皇家帝斯曼集团2011年10月17日宣布其中国科技中心正式成立,彰显其致力于在华长期发展的信心和承诺。此举标志着帝斯曼工程塑料在中国的发展进入了新的阶段,同时将进一步增强帝斯曼工程塑料在中国及亚太市场的研发能力,从而更好地为该区域客户提供本土化的创新及量身订制的技术应用方案。帝斯曼工程塑料... 相似文献
5.
国内涂料界更深地了解帝斯曼应当是从2005年10月帝斯曼(DSM)收购顺德先达树脂开始。作为原华润涂料有限公司的骨干子公司,先达树脂是中国领先的涂料树脂生产商之一,生产的用于罐听、卷钢、工业木器和一般工业涂料等用途的树脂在涂料行业中有很高的如名度和良好的口碑。收购先达树脂,帝斯曼向涂料行业发出了一个明显的信号,帝斯曼进一步增强了液体涂料树脂的产品架构,并进一步加速了帝斯曼在中国市场的业务增长。为此,记者采访了帝斯曼中国总裁、帝斯曼董事会战略顾问夏德帆(Stefan Sommer),请他谈谈帝斯曼在中国的发展。 相似文献
6.
7.
8.
9.
现任帝斯曼集团企业计划部亚洲战略项目高级副总裁蒋惟明博士,自2007年3月28日起被任命为帝斯曼(中国)有限公司总裁,其任期自2007年5月1日开始。前任帝斯曼中国总裁夏德帆将继续担任帝斯曼董事会的战略顾问。 相似文献
10.
11.
12.
13.
14.
15.
16.
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。 相似文献
17.
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. 相似文献
18.
高效液相色谱法分析化妆品中微量成分的研究进展 总被引:1,自引:0,他引:1
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。 相似文献
19.
H. Toda Y. Mochizuki T. Kawanishi H. Kawashima 《Nutrient Cycling in Agroecosystems》2002,63(2-3):167-173
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. 相似文献
20.
我国硝酸工业生产技术新进展 总被引:1,自引:0,他引:1
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. 相似文献