锌的

We also analyze the mechanism of the initial zinc blende structure and wurtzite structure phase transition in II-VI and III-V compound materials. The results indicate that the transition of zinc blende structure to rocksalt structure due to "chair" structure transform, the transition of wurtzite structure to rocksalt structure due to "chair" and "boat" structure transform.

对II-VI族和III-V族初始相为闪锌矿或纤锌矿的压致结构相变机制进行的分析表明，闪锌矿结构到岩盐矿的相变是因为"椅式"结构的变化，纤锌矿结构到岩盐矿的相变是因为"椅式"和"船形"两种结构的变化。

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。

Result The results showed that content of Pb and Zn in 10 kinds of greening plants in Jinggangshan Road was the highest, and the lowest in Jinggangshan University, they had obvious difference among 6 different regions. The plants could absorb Pb and Zn pollutants in different extent depending on pollutants and plant species. Cedrus deodara and Subina chinensis had higher absorption capacity to Pb with 4.84 mg/kg and 4.57 mg/kg, Pittoaporum tobira had the lowest absorption capacity to Pb with 0.38 mg/kg; Ligustrum japonicum had the highest absorption capacity to Zn with 37.58 mg/kg, Buxus microphylla had the lowest absorption capacity to Zn with 11.08 mg/kg.

结果］在所调查6个区域中，10种绿化植物叶片铅、锌含量较高的在井冈山大道，含量最低的在井冈山大学校园内，各区域不同植物叶片的铅、锌含量差异显著。10种绿化植物对大气铅、锌污染物均具有一定的吸收净化能力，并依污染物和植物种类的不同差异明显：对铅吸收量最高的植物为圆柏和雪松，分别为4.84 mg/kg 和4.57 mg/kg，最低为海桐，为0.38 mg/kg；对锌吸收量最高的植物为日本女贞，为37.58 mg/kg，最低为小叶黄杨，为11.08 mg/kg。

As compared with traditional zinc concentrate hydrometallurgy, the technology omitted roasting and relieving hyperacidity with fume procedure, and produced sulfur. The technology, which can decrease environmental pollution and energy consumption in the zinc metallurgical process, is a new metallurgical technology. This papers innovation is: 1 The suspension electrolyte system based on zinc sulphate solution was put forward.

通过对矿物系统的研究，我们最终得到处理硫化锌矿物的悬浮电解工艺流程，该工艺与传统的锌精矿湿法工艺相比，省去了焙烧工序和烟气制酸工序，产出元素硫，明显减少锌冶金过程的环境污染和降低锌冶金过程的能量消耗，是一个全新的新冶金工艺。

The model of heat transfer due to two d ifferent components variation cases,which liquescence gases are mixed into coa l gas or not,is calculated.

结果表明，随着煤气热值的增加，导致烟气平均温度的升高，当粗锌熔液流量没有随之升高时，塔盘外壁与内壁温度也随着升高，这造成了烟气向塔盘外壁的传热量有较大的波动，此外，烟气热量均未充分利用，塔盘内壁温度均远高于锌蒸气的沸点，而煤气掺混天然气后，塔盘内壁温度更高，烟气向塔盘外壁的传热量增加比较显著，这是所供粗锌熔液流量太小，使得塔盘内粗锌熔液不能充分带走烟气热量而造成的。

The growth rate at different growth stages of tetrapod ZnO was determined by the "time mark" experiments and the morphologies formed under different conditions were examined by scanning electronic microscope.

锌蒸气的氧化动力学研究已经揭示：在一定的氧化条件下，锌蒸气中存在凝聚生长的锌液滴与气态锌原子的动态平衡，由此导致了不同形貌的结晶体[1， 2]。

Leitzmann, MD, from the National Institutes of Health in Bethesda, Maryland, and colleagues."Whether dietary zinc intake affects intraprostatic zinc levels is unknown. However, ingestion of 150 mg/day or more of zinc has undesirable metabolic effects, such as immune dysfunction and impaired antioxidant defense that are potentially related to prostate cancer."

Leitzmann博士表示，虽然日常饮食的锌摄取量是否会影响前列腺中的锌含量仍然未知，但是前列腺中拥有较高的锌浓度可能会对於前列腺的健康造成影响，但是，每天服用150mg以上的锌，对於代谢会造成不良影响，如免疫功能障碍并造成与前列腺癌有关的抗氧化剂之缺损。

Effects on reproductive performance: The normal delivery of group B,C and D were 80%、93.33%、93.33%,respectively,were improved by a certain extent comparing with the control group; The mean birth weight of calves were not significantly different between the trial and control groups.But numerical datas shown that supplementing Zn-Met in dietary had the tendency to increase the birth weight of calves; Supplementing Zn-Met in dietary can make dairy cows express empathema earlier,and significantly(P.05).Among the trial groups,the advanced extent of the group C was comparatively large(5.8d);The oestrous cycles were all in normal range and not significantly different; The levels of serum PRL of group B,C and D were significantly(P.05) 1.46 ng/ml、3.08 ng/ml、3.45 ng/ml higher than the group A.

对繁殖性能的影响：添加蛋氨酸锌组的正常分娩率为80％、93.33％、93.33％，较对照组(73.33％)有一定程度的改善；试验组犊牛初生重与对照组犊牛初生重差异不显著(P＞0.05)，但数据结果显示，日粮添加蛋氨酸锌有使犊牛初生重增加的趋势；日粮添加蛋氨酸锌可使奶牛产后发情提前，且差异显著(P＜0.05)，其中，添加蛋氨酸锌240mg／kg组提前的幅度较大，提前了5.8d；试验组发情周期与对照组差异不显著(P＞0.05)，均在正常范围之内；B、C、D组血清促乳素含量均比对照组高，且差异显著(P＜0.05)，依次增加1.46ng／ml、3.08ng／ml、3.45ng／ml，试验组B与C、D两组间也达到显著差异(P＜0.05)。

The results show that spheriform electrode degradation mechanism was basically caused by wear due to fracture of local welding between the electrode tip surface and zinc coated sheet steel happen at electrode surface and alloying between electrode and zinc on zinc coated steel during resistance spot welding zinc coated steel.

结果表明：点焊镀锌钢板时，球形电极的失效机制，主要是电极和镀锌板之间局部焊接的断裂发生在电极表面而导致的电极磨损，以及电极和镀锌板表面的锌之间的合金化。

CHI 630 electrochemical tester was applied to analyze E-t curves of zinc platings on Al-Si alloy and polarization curves in 3.5% NaCl solution, prepared by zinc baths with different amount of stabilizers.

利用CHI630电化学分析测试仪研究了在浸锌溶液中加入不同稳定剂及不同含量的最优稳定剂后试片在浸锌过程中的活化电位随浸锌时间的变化曲线和浸锌后的试片在3.5% NaCl溶液中的极化曲线。

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。