钼

Under acidic conditions, phosphate reacts with ammonium molybdate and ammonium vanadate to form a yellow coloured vanado-molybdophosphoric acid complex, which can be measured at 420nm.

在酸性环境下，样品中的磷与钼酸铵和钒酸铵反应生成一个黄色的磷钼酸-磷钒酸复合物，可以在420nm 下进行测定。

Copper ions greatly enhanced the sensitivity of the determination of molybdenum, which based on the color charge transfer complex of molybdotungstophosphate-3,3",5,5"-tetramethylbenzidine, in the presence of poly vinyl alcohol.

提出了一种基于铜离子增敏形成磷钼钨杂多酸-3，3'，5，5'-四甲基联苯胺电荷转移复合物测定痕量钼的方法。

Vanadium mainly exists as independent minerals or in clay minerals in the form of isomorphism, with a small amount absorbed by clay minerals and limonite. Nickel mainly exists as independent minerals. Molybdenum occurs as colloidal sulfides with carbon, sulfur and clay, and forms molybdenite through thermal metamorphism. Uranium is unevenly scattered in collophanite and carbonaceous_argillaceous materials in the form of isomorphism or adsorption. REE mainly occur in collophanite in the form of isomorphism. Copper, lead and zinc chiefly exist in sulfides or sulfo_arsenides and are concentrated in the metallic layer.

钒或以独立矿物存在，或以类质同象赋存在粘土矿物中；镍主要以独立矿物存在；钼主要与碳、硫、粘土一起呈钼硫化物胶状集合体，经热接触变质作用后形成辉钼矿；铀呈不均匀分散在胶磷矿和碳泥质中，呈类质同象或吸附状态存在；稀土元素主要呈类质同存在于胶磷矿中，部分呈吸附状态存在；铜、铅、锌主要以硫化物和硫砷化物等存在，多富集在金属层中。

Through the rough stage small experiment,the effect of A-200 frother flotating the molybdenum ore was studied.

通过粗选段小型试验，研究了A-200起泡剂选钼效果，试验结果表明：A-200起泡能力强，起泡速度快，泡沫脆散性好，药剂用量小，可代替现用起泡剂用于选钼，并可降低选矿药剂消耗及成本。

Results The qualitative accuracy of CT in diagnosis of breast cancer, galactocele, lipoma, fibroadenoma, gynecomastia, breast hyperplasia was 80%(8/10), 100%(2/2), 100%(1/1), 100%(27/27), 100%(7/7), 100%(14/14), respectively.

钼靶摄影显示成簇样微小钙化优于CT.CT和钼靶摄影对乳房肿块的诊断准确率分别为 97%和71%。

The molybdenum delay composition was prepared by two methods -heteronuclear crystalline by decreased the liquid temperature or on common, and the mechanism of heteronuclear crystalline was discussed.

内容如下：本文选择了钼系延期药作为研究对象。采用手工混制和降温析出两种方法制备了钼系延期药，并从理论上阐述了降温析出异核结晶的原理。

A chromium free conversion coating at least equivalent in corrosion protective quality to conventional chromate conversion coatings can be formed on metals, particularly cold rolled steel, by a dry-in-place aqueous acidic liquid comprising: a component of anions, each of said anions consisting of at least four fluorine atoms and at least one atom of an element selected from the group consisting of titanium, zirconium, hafnium, silicon, and boron, and, optionally, ionizable hydrogen atoms, and optionally, one or more oxygen atoms; a component of cations of elements selected from the group consisting of cobalt, magnesium, manganese, zinc, nickel, tin, zirconium, iron, and copper; the ratio of the total number of cations of this component to the total number of anions of component being at least 1:5; sufficient free acid to give the composition a pH in the range from 0.5 to 5.0; a component selected from the group consisting of phosphorus-containing inorganic oxyanions and phosphonate anions; and a component selected from the group consisting of water-soluble and water-dispersible organic polymers and polymer-forming resins and, preferably, also including a component selected from the group consisting of tungstate, molybdate, silicotungstate, and silicomolybdate anions.

通过对包含以下成分的含水酸性液体进行干燥，可以在金属上形成无铬的转换涂层，该涂层与普通铬酸盐转换涂层相比，至少在抗腐蚀质量上等效：$_一种阴离子成分，所述各个阴离子包括至少4个氟原子，至少选自钛、锆、铪、硅与硼元素中的1个原子。任选地可离解的氢原子，任选地1个或多个氧原子；$_一种选自钴、镁、锰、锌、镍、锡、锆、铁与铜元素的阳离子成分，上述成分的阳离子总数与成分内的阴离子总数之比至少为1∶5；$_足够的游离酸以使该组合物的pH值在0.5～5.0的范围内；$_一种选自含磷的无机含氧阴离子与膦酸盐阴离子的成分；$一种选自水溶性与水可分散性有机聚合物与聚合物形成的树脂的成分，优选还包括一种选自钨酸盐、钼酸盐、钨硅酸盐与钼硅酸盐阴离子的成分。

Although the charge number of isopoly and heteropoly anion was high, they existed mainly in aqueous solution as trivalent and tetravalent anions transferred across the W/NB interface.

系统研究了同多钼酸、同多钨酸、磷钨杂多酸、钒取代的磷钨杂多酸和双1∶11的镝的硅钼杂多酸阴离子在W/NB界面的转移行为，探讨了转移机制和它们在溶液中的存在形式，并计算了有关界面的热力学和动力学参数。

This invention provides a method for preparing hydrogenation catalyst containing phosphorus supported by aluminum oxide. The catalyst is composed of nickel oxide 1-10 wt.%, molybdena oxide and tungsten oxide 10-50 wt.

以氧化铝为载体的含磷加氢催化剂及其制备，该催化剂焙烧后的组成为氧化镍1-10重量％，氧化钼和氧化钨之和大于10至50重量％，氧化磷1-9重量％，余量为氧化铝，其中，以氧化物计，钨和钼的摩尔比大于2.6至30。

Molybdena oxide and tungsten oxide 10-50 wt.%, and carrier. The catalyst is prepared by introducing nickel, molybdena and tungsten into the carrier containing molecular sieve.

该催化剂由包括向一种含分子筛的载体引入钼、镍和钨的方法制备，其中，各组分的用量使催化剂焙烧后的组成为：氧化镍1-10重量％，氧化钼和氧化钨之和大于10至50重量％，余量为载体。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。