氧化钒

Objective Method comparison of Wako vanadate oxidation with improved J-G method for determination of bilirubin.

目的：WAKO钒酸氧化法与改良J-G法测定胆红素的方法学比较。

Total bilirubin Direct bilirubin Vanadate oxidation method Improved J-G method

总胆红素；直接胆红素；钒酸氧化法；改良J-G法

Potassium, natrium determines it is good that use ion chooses electrode indirect method it is better also with indirect method to determine at calcium of direct way;, it is next occasionally phosphor of; of law of azotic arsenic Ⅲ determines use phosphor molybdic acid is ultraviolet law outcome is better it is better with result of law of personal candy kinase that; blood sugar determines; urea determines use Niao enzymatic ultraviolet anhydride of better; flesh uses rate law result enzymatic law outcome is better; albumin determines, it is vanadium acid next alkalescent phosphoric acid of oxidation law; is enzymatic determine outcome of fluid of use AMP amortize is better; amylase determines law of thing of enzymatic standard background and iodic colorimetric law coefficient of variation all bigger, former a bit small, latter of percent of pass is tallish, each lab can try to choose according to his condition.

结论钾、钠测定使用离子选择电极间接法好于直接法；钙测定用间接法也较好，其次是偶氮砷Ⅲ法；磷测定使用磷钼酸紫外法结果较好；血糖测定用己糖激酶法结果较好；尿素测定用脲酶紫外速率法结果较好；肌酐用酶法结果较好；白蛋白测定用溴甲酚绿法较好；胆红素测定用酶法结果好，其次是钒酸氧化法；碱性磷酸酶测定使用AMP缓冲液结果较好；淀粉酶测定酶法底物法和碘比色法变异系数均较大，前者稍小，合格率后者稍高，各实验室可根据自己的条件加以选用。

In no alteration of HIF-1αprotein, nitric oxide donors, metavanadate and sodium nitroprusside, significantly abrogated DFO-induced apoptosis.

4一氧化氮(Nitric Oxide， NO)供体——钒酸钠(Sodium Metavanadate， vanadate)和硝普钠(Sodium Nitroprusside， SNP)都能够抑制DFO诱导的白血病细胞凋亡，但对CoCl2诱导的细胞凋亡没有抑制作用。

Firstly, the molybdenum based catalysts modified by silver, phosphorus, vanadium using aluminum oxide as carrier were studied. The results showed that its catalytic performance for 1,2-propane glycol oxidation to methylglyoxal is good.

论文首先对以氧化铝为载体，在银、磷、钒修饰下的钼系催化剂进行了研究，通过实验发现该催化剂对丙二醇氧化制备丙酮醛具有高的催化活性和较好的选择性。

Methods Diabetic rat models were prepared by giving alloxan. After administration of sodium orthovanadate for seven days, the blood glucose levels of rats were determined. The glucose tolerances of diabetic rats were evaluated by the oxidation-enzyme method, and the insulin levels were determined by radioimmunoassay.

建立四氧嘧啶诱导的糖尿病大鼠模型，对正常大鼠及糖尿病大鼠给予原钒酸钠治疗7天后，采用葡萄糖氧化酶法测定大鼠的血糖值、糖耐量，并以放射免疫法测定血清胰岛素值。

In light of the principle of vanadium's valent state change,after samples are dissolved by weak nitric acid,in medium of around 15% nitric acid,the oxidant ammonium persulphate is immediately used to selectively oxidize V~(4+) to V~(5+).

利用钒的价态变化原理，试样以稀硝酸溶解后，在15%左右的硝酸介质中，直接用氧化剂过硫酸铵选择性地氧化V~(4+)为V~(5+)。

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％。

Objective To evaluate the method of serum bilirubin determination with vanadic acid oxidation assay.

目的 对钒酸氧化法测定血清胆红素进行方法学评价。

Vanadic acid oxidation assay is an ideal method for TBil and DBil determination.

钒酸氧化法测定TBil和DBil是较理想的方法。c

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％。