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   environmental media 在 有机化工 分类中 的翻译结果: 查询用时:0.174秒
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environmental media
相关语句
  环境介质
    The Fatigue Crack Propagation Behaviour of ABS in Environmental Media
    环境介质对ABS疲劳裂纹扩展的影响
短句来源
    Effect of Environmental Media Strain Rate on Tensile Behaviour of ABS Resin
    环境介质和应变速率对 ABS 拉伸行为的影响
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  environmental media
The generation of OH radicals on UV-illuminated TiO2 surface is mainly responsible for the photocatalytic oxidation of pollutants in various contaminated environmental media.
      
Lead levels in different environmental media (soil, grass leaves, water, ceramics, pencil, paint, crayons and cosmetics) were determined to assess the major sources of lead exposure in Thohoyandou, South Africa.
      
Some differences were observed in the response of CF and normal cells to environmental (media) changes.
      
Speciation analyses in different environmental media suggested that Zn is a metal of future potential concern.
      
Quantitative assessments of potential human-health consequences from contaminants in environmental media routinely involve conservative deterministic, screening-level calculations of exposure and risk.
      
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Slow strain rate tensile (SSRT) behaviour of ABS resin in environmental media was studied,and the feasibility of applying SSRT to quickly assessing environmental stress cracking resistance of plastics as a new method was discussed.It was shown that SSRT conld be applied to fast asseing the envivonmental stress cracking restance of ABS.

本文研究了ABS树脂在环境介质中的慢应变率拉伸行为。结果表明:慢应变率拉伸试验可用于快速评价ABS的耐环境应力开裂。

Four intermediates of glycidyl ethers,namely ethyl glycidyl ether(1),propyl glycidyl ether(2),butyl glycidyl ether(3)and amyl glycidyl ether(4),were obtained through a phase-transfer catalytic meth-odology using acyclic alcohol and epichlorohydrin as raw materials.To choose 1.5% or 30% of sodium hy-droxide solution as the environmental media,subsequent procedures were conducted with these glycidyl ethers and β-cyclodextrin.The products were isolated through a self packed silica gel column chromatogra-phy,and...

Four intermediates of glycidyl ethers,namely ethyl glycidyl ether(1),propyl glycidyl ether(2),butyl glycidyl ether(3)and amyl glycidyl ether(4),were obtained through a phase-transfer catalytic meth-odology using acyclic alcohol and epichlorohydrin as raw materials.To choose 1.5% or 30% of sodium hy-droxide solution as the environmental media,subsequent procedures were conducted with these glycidyl ethers and β-cyclodextrin.The products were isolated through a self packed silica gel column chromatogra-phy,and their chemical structures were proved to be the mono substituted 2-(3-alkyloxy-2-hydroxypropyl)-β-cyclodextrins(1a~4a)and mono substituted 6-(3-alkyloxy-2-hydroxypropyl)-β-cyclodextrins(2b~4b)by means of the TLC,IR,DSC,MS,1H NMR and 13C NMR measurements.

以环氧氯丙烷和脂肪醇为原料,通过相转移催化法合成了乙基、正丙基、正丁基和正戊基缩水甘油醚(1~4),并利用所合成的缩水甘油醚和β-环糊精为原料,分别在弱碱水溶液(1.5%)和强碱水溶液(30%)中制备并用硅胶柱分离出单2位取代的乙氧基、丙氧基、丁氧基和戊氧基-2-羟丙基-β-环糊精(1a~4a)和单6位取代的丙氧基、丁氧基和戊氧基-2-羟丙基-β-环糊精(2b~4b),利用薄层色谱、红外光谱、差热扫描量热分析、质谱和核磁共振等手段对所合成的产品进行了表征.

 
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