查询词典 Zn

The results are as following: The concentrations of Cr, Cu, Pb, Cd, Zn, As and Hg were 0.57 7.37 l.89 0.18 36.99 l.57 0.018μgL^(-1) in the seawater, respectively. They are 30.11、30.62、32.61、0.106、68.56、2.48、0.027×10^(-6) in the sediment, respectively. Except Zn, other heavy metals are determined in the organisms. The concentrations of heavy metals are more in razor clam than in the mullet.

结果表明，表层海水中重金属Cr、Cu、Pb、Cd、Zn、AS和Hg的平均浓度分别为0.57、7.37、1.89、0.18、36.99、1.57、0.018μgL^(-1)；表层沉积物中重金属Cr、Cu、Pb、Cd、Zn、A，和Hg的浓度分别为30.11、30.62、32.61、0.106、68.56、2.45、0.027×10^(-6)气生物体内除了鲻鱼中未检出Zn外，七种重金属在缢蛏、鲻鱼体内均有检出，且缢蛏中重金属含量明显高于鲻鱼体内重金属的含量。

Objective: To study the effect of excessive VitA and Zn intake respectively or unitedly on antioxygenic capability, cell cycle and apoptosis protein in the rat spleen. The study wants to confirm the interaction between VitA and Zn, and provide reasonable foundation for the supplement of VitA and Zn.

目的：研究单独及联合过量摄入维生素A、锌对大鼠脾脏抗氧化功能、细胞周期及凋亡相关蛋白的影响，研究VitA和Zn之间的相互作用，为VitA和Zn的合理补充提供实验依据。

It is studied to microcosmic mechanism of Fe/Zn composite plastic consume energy, that macroscopical antiseismic capability of Fe/Zn composite is response of microcosmic mechanism of Fe/Zn composite plastic consume energy is further proved.

研究了Fe/Zn复合材料塑性耗能的微观机理，进一步证明了Fe/Zn复合材料的宏观抗震性能是微观塑性耗能的反应。

Both crystallographically unique Zn atoms exit as an octahedral geometry. The four equatorial positions of Zn1 atom are occupied by the carboxylate-oxygen atoms of the two tartrates, and the two oxygens of the left four carboxylate-oxygen atoms coordinate to two different Zn2 atoms, respectively, forming infinite coordination polymer chains. The left two of the trans equatorial positions of Zn2 atom are completed with two oxygen atoms of two water molecules. The axial positions of both Zn atoms are occupied by the nitrogen atoms from different 4,4'-bipyridine molecules to give a 2D rectangular-grid layers with a cavity dimension of 0.51165(3)nm×1.13896(5) nm. A three dimensional network is formed by the crystallization water chains joined by the carboxylate-oxygen atoms through hydrogen-bonding interactions.

两个晶体学独立的Zn原子均为八面体构型，其中Zn1原子赤道配位点被2个酒石酸根中的4个羧酸根氧螯合配位， 2个酒石酸根中剩下的4个羧酸根氧中的2个分别与2个Zn2原子连接形成无限一维链， Zn2原子的另外2个反式赤道配位点被2个水分子氧占据，同时这两种Zn原子的轴向配位点均被4，4'-联吡啶的氮原子占据，形成具有矩形格子[0.51165(3) nm×1.13896(5) nm]的二维层状结构，游离的2个水分子通过氢键作用形成二聚体，并与酒石酸根中未与Zn配位的羧酸氧连接，把二维层状结构连接成三维网状的超分子结构。

The mechanism of removing Zn(superscript 2+) has formed the chelating agent of hydroxamic acid group and Zn(superscript 2+), and the concentration of its maceration extract by water is 1/51 of the neutralization method's, so it is provided with better stability and environment safety.

捕集剂去除Zn(上标 2+)的反应机理为羟肟酸基团与Zn(上标 2+)形成了稳定的螯合物。摘集剂与Zn(上标 2+)反应形成的沉降物的浸出量仅为中和法沉淀的1/51，具有较高的稳定性和环境安全性。

The intermetallic compounds are coarsened into nubbly Cu6 Sn5 phase by adding excessive Cu into Sn-Cu solder alloy. For Sn-9Zn-xCu solder alloys, the long needle-like Zn rich phase which is the mainly existing form of Zn in Sn-Zn solders is transformed into Cu5 Zn8 phase and fine Zn rich phase by the addition of 2% Cu, while CuZn phase and Cu6 Sn5 phase are formed in Sn-9Zn-10Cu bulk alloy. When soldering within short time under 260℃, the ripening and growth of IMC at Sn-xCu/Cu interface are accelerated with increasing Cu content in Sn-Cu solders.

结果表明，当Sn-Cu钎料中Cu的含量为2%时，基体中IMC粗化为块状的Cu6Sn8相；对于Sn-9Zn-xCu钎料合金，2%Cu元素的加入使得Sn-9Zn基体中长针状的富Zn相转化为Cu5Zn8相以及细小的富Zn相，而当Cu含量达到10％时，钎料基体中的IMC为CuZn相与Cu6Sn5相。

It is revealed in the study that the heavy metal concentration of Pb,Cu,Zn in the leaves of urban trees (Sabina chinesis,Platycladus orientalis,Euonymus japonicus,Platanus acerifolia, Prunus cerasifera) is significantly related with the relative heavy metal contents in atmospheres of different urban regions of Yantai city, while no such relationship is found in heavy metal Cd, and that the heavy metal amounts of Pb,Cd,Cu,Zn in urban soils had no direct impacts on the heavy metal concentrations in leaves of urban trees.

通过对烟台市区不同大气污染区域绿化植物叶片中重金属Pb，Cd，Cu，Zn富积量和大气与土壤中相应重金属的含量研究分析发现，植物叶片中重金属Pb，Cu和Zn的富积量与大气中Pb，Cu和Zn的相对含量呈显著的正相关，而植物叶片中Cd的富积量与大气中重金属的相对含量相关不显著。

The Ni and Zn-doped spiculate α-FeOOH were prepared by the coprecipitation method and citric acid method using FeCl2、Zn(NO3)2、Ni(NO3)2 and NaOH as raw material and spiculate α-FeOOH as intermediate. Then they successively were enwraped by citric acid complex of the Ni and Zn and heat treated to get spiculate nano-Ni0.5Zn0.5Fe2O4. The particles size and slenderness ratio of spiculate nano-Ni0.5Zn0.5Fe2O4 were successfully controlled by the doped mass of Ni and Zn in the coprecipitation process.

以FeCl2、Zn(NO3)2、Ni(NO3)2和NaOH为原料，借助针状α-FeOOH做为中间体，有效的把共沉淀法和柠檬酸法相结合，制得掺有镍和锌的针状纳米α-FeOOH，在其表面包裹镍和锌的柠檬酸络合物后，经热处理制得了针状的纳米Ni0.5Zn0.5Fe2O4 ，并通过控制共沉淀法过程中镍和锌的掺入量，有效的控制了针状纳米Ni0.5Zn0.5Fe2O4 的粒径和长径比。

Process and mechanism of electrodeposited Zn-Fe-Si02 composite coatings were studied, including some contents as follow: Potential-pH plots of Zn-H2O and Fe-H2O systems were drawn, and the thermomechanical analysis was made. Results showed that the region of zinc and iron's codeposition was wide, which provided theoretic basis for electrodepositing Zn-Fe alloy. But the balance potential of zinc was greatly different from iron's, so in order to make zinc and iron codepositing, some complexant must be added into electroplating solution.

本文研究了电沉积Zn-Fe-SiO_2复合镀层的工艺和机理，主要包括以下几个方面：绘制了Zn-H-2O系和Pe-H_2O系的电位-pH图，并对其进行了热力学分析，结果表明，锌和铁发生共沉积的区域很大，这就对电沉积Zn-Fe合金的可能性提供了理论依据，但是锌和铁的平衡电位差别较大，所以，必须在镀液中添入一定量的配合剂才能使锌铁产生共沉积。

SEM and XRD results showed that the bushiest ZnO nanoneedles can be obtained after using H_2O_2 pre-oxidization at the Zn/H_2O_2 ratio of 20mg/ml and themal oxidation at 650℃for 2h and ZnO nanoparticles at the Zn/H_2O_2 ratio of 2mg/ml, and the morphologies were evolved from nanoneedles to nanoparticles between the two Zn/H_2O_2 ratios.

SEM和XRD分析表明，当在预氧化阶段Zn/H_2O_2为20mg/ml时，650℃热氧化2h后纳米锌粉氧化成茂密针状ZnO，当Zn/H_2O_2为2mg/ml时，生成颗粒状ZnO，处于中间浓度时，针状结构依次减少；预氧化微米锌粉无论Zn/H_2O_2比例为多少，850℃热氧化8h后的产物都为栗状ZnO。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。