排序方式: 共有5条查询结果,搜索用时 476 毫秒
1
1.
2.
煤自燃现象是威胁煤矿生产的重要原因,研究煤自燃微观机理对煤自燃的防治有极为重要的作用。“活性基团”是导致煤自燃的主要因素。通过计算研究,本文分析了芳香结构对“活性基团”反应活性影响程度,得出了在研究煤自燃微观反应过程中可以忽略芳香结构影响,用比较小的芳香类分子来代表煤分子表面结构的结论,为进一步研究煤自燃微观过程提供了依据。 相似文献
3.
4.
Molecular imprinting technology has a great potential to be used in protein separation and purification.In this work,lysozyme imprinted polyacrylamide gel was prepared with silica particles as a sacrificial template to generate macro-porosity for fast adsorption.The adsorption equilibrium time and adsorption capacity were 9 h and 56 mg/g respectively,which was 2 h less and 2.3-fold more than polymers without the sacrificial template.In order to test molecular imprinting polymers(MIPs)'selectivity,bovine serum albumin(BSA)was chosen as interferent for binary adsorption tests.In addition,the adsorption selectivity was further investigated using different molar ratios of lysozyme to BSA with fixed total concentration of proteins,as well as using various total concentrations of proteins with an equimolar ratio of lysozyme to BSA.It has been proven that the total concentration of proteins should be larger than1.5×10~(-7) mol/mL,when the molar ratio of BSA to Lyz is 1∶1,in order to effectively separate Lyz from the binary protein mixture.The macro-porous lysozyme molecularly imprinted polymers have less adsorption time,larger adsorption capacity,and better imprinting effect. 相似文献
5.
一、引言
随着现代化学工业的迅猛发展,化学物品已被广泛应用于国民经济的各个部门和干家万户,现代化工企业的装置日趋密集,设备目趋庞大,管线也愈趋复杂,而且在化学生产过程中,要使用大量易燃、易爆、有毒原料。生产、储存、运输过程中所发生的事故越来越多,造成的危害也越来越大,突发性化学事故对人类安全提出了严峻挑战。它不仅造成事故现场的人员伤亡,而且可能影响未直接暴露在事故现场的人们的身体健康;不仅使得直接损失巨大,而且因污染后的长期整治和恢复需花费大量的资金,间接损失也很严重。 相似文献
1