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And ZH_5 [Ga(H_2O)CoW_(11)O_(39)]·xH_2OZ=Zn~(2+, Ni~(2+), Mn~(2+) by double decomposition, Which is so far un —reported yet, its characterrization by IR, UV, X—ray diffraction and DTA were studied.

用复分解法制备了未见文献报道的ZH_5[Ga(H_2O)CoW_(11)O_(39)]·xH_2OZ=Zn~(2+、Ni~(2+)、Mn~(2+)。研究了它们的红外、紫外、x—射线粉末衍射和差热性质。

The welldefined relationship between the C14 and C15 Laves phase was established as〓〓. The metastable Zr〓Ni〓 phase was stabilized at room temperature as long range ordered state along [100] and [010] directions.

亚稳相Zr〓Ni〓相在室温以长程有序的方式稳定存在，其有序化的方向为体心四方结构的[100]和[010]方向。

The results indicated that the metal values Mn、Cu、Ni、Co contained in nodules could be extracted effectively in dilute chloric acid solution with the addition of pyrite as reductant, which exists widely in the nature.

结果证实稀盐酸中采用自然界广泛存在的黄铁矿作还原剂可以有效地浸取锰结核中的有价金属Mn、Cu、Ni、Co，黄铁矿中的硫最终将氧化生成硫酸根。

As support, Agarose can benot only used in normal condition, but also in denaturalization (for example, 6 mol/Lhydrochloric acid carbamidine or 8 mol/L urea). Herein, the preparation of IMACmatrixes were conducted using agarose as support, carboxymethylated aspartate as chelating ligand and Co~(2+) and Ni~(2+) as chelating center ions.

本实验用琼脂糖作为基质，选用四配位，与金属离子有较强作用力的羧甲基天冬氨酸为配基，以Co~(2+)、Ni~(2+)作为螯合金属离子，合成了一系列金属螯合亲和色谱填料，并对其蛋白质分离性能进行了研究。

Using Ni-NTA Agarose kit of QIAGEN company, the expression products was purified. Then it was used to insect-resistant experiment. Primarily, results showed that purified protein has obvious effect on inhibiting beet armyworm to grow and kill them to some extent.

表达产物经QIAGEN公司的Ni-NTA Agarose试剂盒纯化目的蛋白后，进行虫效研究，初步实验结果显示对甜菜夜蛾幼虫具有一定的毒杀作用及抑制生长发育。

A series of Ni-V/γ-Al2O3 catalysts were prepared and used in the one-step synthesis of aniline from benzene, hydrogen peroxide, and aqueous ammonia and/or urea.

设计并制备了Ni-V/γ-Al2O3催化剂，研究了其上苯用过氧化氢氧化氨化一步直接合成苯胺的性能和不同氨基源对合成苯胺的影响。

It is found that the phase structure of the composite alloy is mainly affected by ball milling time, but not the content of Zr〓Ni〓.

结果发现，该合金的相结构主要随球磨时间发生变化，与Zr〓Ni〓的含量的影响不大。

The formal potentials in cyclic voltammograms of these 3+ valence complexes are followed: Co〓-TPPS (-0.08V )＞Fe〓TPPS (-0.14V)＞Mn〓-TPPS (-0.23V). The electrochemical reaction of Mn〓-TPPS is reversible, and both of Co〓-TPPS and Fe〓-TPPS are quasi-reversible. The standard heterogeneous rate constants of Co〓-TPPS and Fe〓-TPPS were determined to be 1. 4×10〓cm/s and 1.4×10〓cm/s respectively. The rates of electrode reaction are as followed: Mn〓-TPPS＞Co〓-TPPS＞Fe〓-TPPS, e.i. Mn〓-TPPS is the most easily oxidized by the dissolved oxygen, and Fe〓-TPPS is oxidized slower than Co〓-TPPS. Ni〓-TPPS can not be oxidized. It is considered that oxygen plays an important role in the valence change of central metal atom and the rate of electron transfer in some metalloporphyrins.

三价金属卟啉络合物在循环伏安图上可得到三价到二价的还原和氧化响应，电极电位从大到小排列为：Co〓-TPPS(-0.08V)＞Fe〓-TPPS(-0.14V)＞Mn〓-TPPS(-0.23V)，电极反应可逆性也不相同，Mn〓-TPPS是可逆过程，Co〓-TPPS、Fe〓-TPPS是准可逆过程，实验测得Co〓-TPPS的标准电极反应速率常数ks＝1.4×10〓cm/s，Fe〓-TPPS的ks＝1.4×10〓cm/s，电极反应的速率从大到小为：Mn〓-TPPS＞Co〓-TPPS＞Fe〓-TPPS，即Mn〓-TPPS最容易被溶解氧所氧化，Fe〓-TPPS被氧化的速度最慢，Ni〓-TMPyP不能被氧化，因此我们认为溶解氧对金属卟啉中心离子的价态和电子转移速率起着重要作用。

Thermodynamic analysis of cobalt removing process was carried out according to electrode potential theory and Nernst equation and proves that the removal of Fe(superscript 2+), Mn(superscript 2+), Co(superscript 2+) impurities in the solution is possible through oxidization by potassium permanganate to reduce the concentration level requested by industrial production, but not applied to Ni(superscript 2+).

用电极电势理论和能斯特方程对此除钴过程进行了热力学分析，结果表明：高锰酸根的氧化对溶液中杂质Fe(上标 2+)、Mn(上标 2+)、Co(上标 2+)的去除是可行的，可以达到工业生产对杂质的浓度要求；对于Ni(上标 2+)只能进行部分氧化。

In order to disclosure the reason why the electrocatalysis activeness and selectivity droped after being used several hundred hours continuously, the x-ray diffraction, scanning electron microscopy and energy dispersive spectroscope have been used to characterize the surface condition variations of Monel metal. The results indicated: Monel metal belongs to the Cu-Ni alloy around the electrolysis experiment.And after being used for 600hr, the surface layer element composition and geometry distribution of the alloy changed, namely in the alloy the Cu element /which superficial free enthalpy was smaller,"concentrated" to the alloy surface,and formed one kind of marble structure microcrystallite.Thus the electrode surface becamed rough a

为了揭示蒙乃尔合金阴极在连续使用数百个小时后电催化活性剂选择性下降的原因，采用X射线衍射仪、电子扫描电镜和电子能谱分析仪对电解实验所用的蒙乃尔阴极材料在电解实验前后的表面状态进行了表征，结果表明：所使用的蒙乃尔合金阴极材料在电解实验前后均属于Cu-Ni合金，使用600hr后，由于表面层元素组成和几何排布发生了变化，即合金中表面自由焓较小的Cu元素向合金表面&富集&，形成一种大理石结构的微晶，表面粗糙、不均一，这是造成其对硝基苯电还原的催化活性及选择性随着使用时间延长而逐渐下降的主要原因，同时也为此类电极的修饰改进提供了方向。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。