查询词典 Zn

The results show that the Zn complex can be partially intercalated into the double helix of DNA due to the planarity of the benzimidazole ring and the bulky structure of the complex.

实验结果表明，由于配合物的八面体构型以及苯并咪唑环的平面性，其与DNA作用方式可能为部分插入。

Objective To study influence of different concentration of Cu~(2+) on hemoglobin,weight and Zn~(2+) content in kidney,pancreas,musculature and branchia of carassius auratus.

目的探讨不同浓度Cu2+对鲫鱼血红蛋白、体重以及肾、胰腺、肌肉和鳃内Zn2+含量的影响。

In this thesis, we developed chiral proton N-O type ligands and employed them in the enantioselective addition of diethylzinc to N-diphenylphosphinoyl imines. The relationship between the structure of the ligands and the enantioselectivity was systematically studied. Furthermore, enantioselective butylation of N-diphenylphosphinoyl imines withBu〓Zn and enantioselective diphenylzinc addition to imine were also examined.

本文致力于亚胺的不对称催化有机锌试剂加成反应的研究：以手性质子型N-O配体为促进剂，对N-二苯基次膦酰亚胺进行不对称乙基锌加成反应而展开研究工作，系统地考查了手性配体的结构对反应的影响；另外，对N-二苯基次膦酰亚胺的不对称催化丁基锌加成进行了研究，并首次对亚胺的不对称苯基锌加成反应进行了初步探索。

High content of calcium carbonate in calcareous soil is one of major factors that cause zinc deficiency of crops.

石灰性土壤中高碳酸钙(CaCO3)含量是引起作物缺Zn的重要原因之一。

A new process of preparing high-purity zinc directly from complex zinc oxide materials or zinc calcine was invented.

首次在zn-NH_3-NH_4Cl-H_2O体系中，直接由复杂的氧化锌物料和锌焙砂生产高纯锌。

The results were as follows:Afterthe NH_4Y zeolite was dealuminated with Oxalic acid,the conversion of pinenespeeded up markedly, but the selectivity of camphene also dropped downmarkedly.After the NH_4Y zeolite was infused in solution of Mg(NO_3)_2,Zn(NO_3)_2 or Al(NO_3)_3 to remove corresponding oxide,the conversion rate of pinenedropped down,and the selectivity of camphene had little increase.

结果表明：NH_4Y型沸石分子筛经草酸脱铝后，蒎烯转化显著加快，但莰烯的选择性也显著下降；而NH_4Y型沸石分子筛经硝酸镁、硝酸(来源：caAB3aC论文网www.abclunwen.com)锌、硝酸铝溶液浸渍来负载相应的氧化物后，蒎烯转化率有所下降，莰烯选择性稍有增加。

Testing results showed that thermal stabilization of sulfur- containing Ca-Zn carboxylate was superior to that of reference stabilizers.

结果表明，含硫羧酸钙、锌对PVC的热稳定性能分别优于硬脂酸钙、锌。

Methods The trace elements such as Zn,Se,Cu,Ca,Mg and Fe of50COPD patients in catabasis were measured and compared with health adults.

将50例缓解期COPD患者血清锌、硒、铜、钙、镁、铁和正常人比较。

The activation energy of cellular decomposition calculated by DSC date was 88.24kJ/mol, which showed that the decomposition was controlled by Zn atom diffusion.

DSC数据计算得出，胞状分解的相变激活能为88.24kJ/mol，表明其分解主要受锌原子扩散控制。

The result from X-ray diffraction showed cellular decomposition dominated the initial aging of Zn-Al based alloy prepared by rapid solidification with single roller.

通过100℃等温时效XRD分析可知，单辊快淬锌铝合金早期时效过程中胞状分解反应为主导。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。