Neonatal sepsis is a major disease that threatens the life of newborns,not only has a high incidence rate,but also has a......

Two novel poly -oxygen bipyridine alkaloids, speranculatines A (1) and B (2) have been isolated from speranskia tubercul......

目的 分析某院β-内酰胺类抗生素的使用及病原菌耐药情况,为临床合理用药提供参考依据.方法 统计分析某院2008年1月至2009年12月β......

为研究胆木水提取物中的化学成分,利用D101大孔树脂、硅胶和自动纯化系统等各种色谱手段对其水提取物进行分离和纯化,共得到9个化......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

Four different ZSM-5 zeolites are tested for the gas-phase Beckmann rearrangement of cyclohexanone oxime (CHO) into lact......

The mechanism of the formation of a key tricyclic lactam intermediate 3 was studied. It was found that the E-form compou......

Mass spectrometric behaviour of 2,2a,3,4-tetrahydro-4-methyl-2a-phenyl-2-(thiophen-2-yl)-1H-azeto[2,1-d][1,5]benzothiaze......

目的:了解临床分离菌株的耐药现状,指导临床抗感染治疗.方法:统计分析2002年临床分离菌对β-内酰胺类抗生素的耐药性.结果:革兰阳......

采用微波辐射和分子筛催化相结合的方法合成了高光学活性的γ-内酰胺,并采用粗糙集理论进行了溶剂筛选. 结果表明,在微波辐射下,以......