钒

A new diperoxovanadate crystal NH4{OV(O2)2{2-(2′-pyridyl)-imidazole}}·4H2O was synthesized.

在相互作用体系NH4VO3/H2O2/2-(2′-Py)Imi中合成了一种新的双过氧钒化合物。

We think the hydrophobic force in water is the main reason for nanoparticle reassociation, and it can decrease the production efficiency. 3. Under the fluence of 50, 120 and 200mJ/cm〓 the VOPc nanoparticles have been prepared by laser irradiation.

在对酞菁氧钒纳米颗粒的制备中，发现过长时间的激光照射并不能继续提高纳米颗粒的产量，溶液在低温环境下进行激光消融更有助于提高纳米颗粒的制备效率。

ABSTRACT: Under V-Mo co- existed condition at about 016 mol/L acidityof sulfuric acid , using copper as catalyst and sulfocarbamide as

一〔1～4〕，但其通常采用2～3 mol/L 的显色酸度，显色液中钒量大于116 mg 时将严重干扰钼的测定。

The interference of metal ions Fe(superscript 3+、Cu(superscript 2+)and so on in oil can be eliminated by using hydroxyl amino hydrochloric acid and sulfourea as masking agents.

以盐酸羟胺和硫脲作为掩蔽剂可消除Fe(上标 3+)、Cu(上标 2+)等离子的干扰，对大庆原油与锦西减四线馏分油中的钒进行测定，相对标准偏差不大于3.5%，加标回收率为

The ligand of the chiral Schiff base and acetylacetone vanadium are subjected to complexation in situ, hydrogen peroxide is taken as an oxidant, aryl alkyl thioether asymmetric oxidation reaction is catalyzed in a toluene or dichloromethane solution under low temperature or room temperature, enantioselectivity of chiral sulphoxide is 72 percent to 95 percent ee, and yield is 42 percent to 83 percent.

将上述手性西佛碱配体与乙酰丙酮氧钒原位络合，采用双氧水为氧化剂，在甲苯或二氯甲烷溶液中低温至室温下催化芳基烷基硫醚不对称氧化反应，手性亚砜的对映选择性为72％-95％ee，产率为42％-83％。

Sulvanite occurred in the Lower Cambrian silicalite and slate in the large barium metallogenic belt of southern Qinling Mountains .

在南秦岭下寒武统硅岩建造中的毒重石-重晶石矿床中，产出大量硫钒铜矿。

The experimental study of foaming phenomenon of titaniferous slag during V-Ti-bearing magnetite smelting was conducted using different additions.

从配加添加剂的角度研究全钒钛矿冶炼时，含钛高炉渣的起泡现象。

Increasing the ratio of 6-coordination ions/4 coordination ions of TiO〓, if the fusibility temperature can be suitable for smelting, can make the properties above of the slag more suitable for smelting titaniferous iron ore.

在炉渣熔化性温度允许的条件下，适当地提高Ti〓/Ti〓的比值，可使上述诸性质向有利于高炉冶炼钒钛磁铁矿的方向变化。

The high iron and low silica sintering of titaniferous iron concentrate was realized with optimal proportioning ore under the present condition in Panzhihua New Steel and Vanadium Limited Company.

在攀枝花新钢钒股份有限公司炼铁厂现有的资源条件下，通过优化配矿实现含钛铁精矿高铁低硅烧结，烧结矿全铁的质量分数从49.20%提高到51.46%，SiO2的质量分数从5.30%降低到4.05%。

The BP neural networks are used to improve remnant error model of GM (1,1) obtained forecast result carried on the combining forecast model which forecast again and has carried on the forecast to the vanadium titanomagnetite output of Pan zhihua.

这里介绍了灰色系统和BP神经网络相结合的预测原理，利用BP网络，对改进的GM(1，1)残差修正模型所得预测的结果进行再预测的组合预测模型，并对攀枝花市钒钛磁铁矿的产量进行了预测。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。