钒的

In this paper, the development of trace vanadium element in chemistry and life science has been reviewed.

本文概述了微量元素钒在化学和生命领域中的研究进展。

Objective To study the effects of Bis oxovanadium on renal structure of spontaneously hypertensive rats and its mechanism.

目的：探讨联麦氧钒对自发性高血压大鼠肾脏结构的影响及机理。

Vanadium, boron, nickel, silicon and other elements are present in very small amounts in the body.

钒，硼，镍，矽和其它元素存在於非常小的数额在体内。

The kinetic parameters of vanadium catalytic oxidation of azomethine H by bromate have been determined by using spectrophotometric method .

以酸性介质中痕量钒催化溴酸钾氧化甲亚胺 H显色反应为对象，利用光度法研究了反应的动力学参数。

The gaseous impurities in the alloys were well controlled with the sum of C, N and O less than 500wppm. For the first time it was found the strong interaction between Cr-Ti-CON, which reduces the mobility of Ti and CON, enhancing high-temperature strength and the aging-hardening property, and keeping the cold-work induced hardening at higher temperature. Aging-hardening could increase the tensile strength of V-4Cr-4Ti by 30% and could be utilized at 00 C for better economical performane of a vanadium structure. Hydrogen release will occur for the alloys tensile loaded at room temperature, which will affect the safety of a vanadium structure due to the resulting dimensional instability. For hydrogen embrittlement, impact toughness and fracture toughness of the alloy showed higher sensitivity than the tensile test elongation,so the toughness should be used as a new standard for the assessment of the embrittlement. Vanadium alloys were easily oxidized in air.

合金的气体杂质含量得到有效控制，C、N、O总量低于500wppm；首次发现Cr-Ti-CON之间的强相互作用，它使Ti、CON的高温可移动性降低，提高合金的高温强度、增强时效强化特性、使冷加工强化保持到更高温度；时效强化可使V-4Cr-4Ti的强度提高30%，可在低温（00C）下应用，提高构件的经济性；室温下，钒合金在拉应力的作用下，存在着氢释放，带来部件使用中的尺寸不稳定性，影响构件安全；氢脆是钒合金聚变应用的一个关键问题，合金的冲击韧性和断裂韧性表现出比拉伸延伸率更强的氢脆敏感性，应作为评价合金氢脆行为的新标准。

Like efflorescence, vanadium stains are not harmful and are part of the neutral by-product of some bricks.

就像风化，钒污迹无害，而是一些砖块中和反应的副产品。

In the work, three P-Mo-V heteropoly acids with different Vanadium number have been synthesized by acidification- etherization. Their component and structure have been confirmed by ICP-AES and TGA. They have been characterized by FT IR, XRD and UV. FT IR demonstrates their Keggin structure.

本文采用酸化—醚化法合成了三种不同钒原子数的P-Mo-V三元杂多酸，并用ICP-AES和TGA确定其化学组成和结构，用FT IR、XRD和UV等手段对其结构和性质进行了表征。

Ferrovanadium is a kind of important transitional metal alloy for the tool steel,refractory steel.

钒铁是生产工具钢、耐热钢的一种重要中间合金，目前主要采用铝热法生产。

The mainly preparation of ferrovanadium is aluminothermic reduction currently.

钒铁是生产工具钢、耐热钢的一种重要中间合金，目前主要采用铝热法生产。

By adding Al into V9P8-en, researching the order of doping the reactants, thepH of originative gel, the reactants' filling volume, the form of Al source and V source,the effect that the additive rate of V : P : Al have on the productions and so on, getsome data.

一、进行了V9P8-en添加Al元素的实验，研究了起始物的添加顺序，起始反应溶液的pH值，反应釜中起始物的充填率，钒源、铝源的形式，钒、磷和铝的加入量之间的比率等对反应产物的影响。

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％。