期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
Photo-promoted carbonylation of chloroalkanes with carbon monoxide by non-precious metal catalysts 被引量:3
1
作者 Hong Wei Wang Ying Ping Jia Da Bin Gao Jing Mei Yin Guang-Yun-Zhou Shen Min Li 《Chinese Chemical Letters》 SCIE CAS CSCD 2007年第7期795-798,共4页
The photo-promoted carbonylation of chloroalkanes with carbon monoxide was carried out under ambient conditions with copper and cadmium salts catalysts. The results indicated that the corresponding esters were produce... The photo-promoted carbonylation of chloroalkanes with carbon monoxide was carried out under ambient conditions with copper and cadmium salts catalysts. The results indicated that the corresponding esters were produced with three salt catalysts, i.e.CuBr2, CuCl2 and CdI2. Among these catalysts, CdI2 was the most efficient in terms of ester yield and selectivity, particularly, 60% yield and 75% selectivity in the carbonylation of chlorocyclohexane were achieved. Furthermore, the yield and selectivity of the ester can be improved greatly by adding tri-n-butylamine in the CuBr2 and CuCl2 catalyst systems. On the other hand, the additive. As a result, we suggest that iodide ion plays an important role in the catalyst system of the cadmium salts. 展开更多
关键词 cadmium salts Copper salts CHLOROALKANES Photo-promoted carbonylation
下载PDF
酿酒酵母谷胱甘肽产量与镉盐抗性关系的研究与应用 被引量:5
2
作者 陈叶福 李军侠 +2 位作者 沈世超 吕鸿雁 肖冬光 《中国酿造》 CAS 2012年第4期40-44,共5页
酿酒酵母谷胱甘肽(GSH)生成量与其镉盐抗性关系验证实验和利用镉盐抗性筛选高产GSH酿酒酵母突变株实验证明,酿酒酵母GSH生成量越高,其镉盐抗性越强;反之,酿酒酵母镉盐抗性越强,其GSH生成量不一定越高。在紫外诱变实验中利用镉盐抗性筛... 酿酒酵母谷胱甘肽(GSH)生成量与其镉盐抗性关系验证实验和利用镉盐抗性筛选高产GSH酿酒酵母突变株实验证明,酿酒酵母GSH生成量越高,其镉盐抗性越强;反之,酿酒酵母镉盐抗性越强,其GSH生成量不一定越高。在紫外诱变实验中利用镉盐抗性筛选高产GSH酿酒酵母突变株,正突变率达到23.5%,最终获得突变株BV54和MV16,其胞内GSH含量较出发菌株B-3和M8分别提高了32.53%和36.55%。结果表明,这种利用镉盐抗性筛选高产GSH酿酒酵母突变株的育种方法可行且高效。 展开更多
关键词 酿酒酵母 谷胱甘肽 镉盐抗性 紫外诱变
下载PDF
镉盐胁迫对水稻幼苗生长及生理指标的影响 被引量:4
3
作者 王媛 《科技创新导报》 2009年第29期90-90,共1页
使用可见光分光光度法、乙醇提取法和蒽酮法,分别研究了水稻幼苗土壤中镉盐对水稻体内过氧化氢酶活性、叶绿素和可溶性糖含量的影响。结果表明,在此逆境条件下,光合速率下降,叶绿素含量和可溶性糖含量均下降,分别下降了50%和88%。同时... 使用可见光分光光度法、乙醇提取法和蒽酮法,分别研究了水稻幼苗土壤中镉盐对水稻体内过氧化氢酶活性、叶绿素和可溶性糖含量的影响。结果表明,在此逆境条件下,光合速率下降,叶绿素含量和可溶性糖含量均下降,分别下降了50%和88%。同时产生过量的过氧化氢,过氧化氢酶活性相应增加,增加了1.8倍,以清除过量的过氧化氢,对植物造成伤害。 展开更多
关键词 水稻幼苗 镉盐 过氧化氢酶 叶绿素 溶性糖
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部