硫酸

It is found that the concentration of nitric acid has great effect on reclaiming rate of lead in the processing of nitric acid leaching-lead deposition after investigating the preparation of tribasic lead sulphate from bismuth waste residue by ammonium hydrogen carbonate transformation method.

通过对铋冶炼浸渣采用碳酸氢铵转化法合成三碱式硫酸铅的工艺研究，得出在硝酸浸出—硫酸沉铅工艺过程中影响铅回收率的主要因素为硝酸质量浓度。

The processing principle for the preparation of tribasic lead sulphate from bismuth hydrometallurgy waste residue by ammonium hydrogen carbonate transformation-nitric acid leaching-lead deposition with sulphuric acid-sodium hydroxide synthesis is introduced.

介绍了铋冶炼浸渣采用碳酸氢铵转化—硝酸浸出—硫酸沉铅—氢氧化钠反应合成三碱式硫酸铅的工艺原理。

The invention provides a foliar fertilizer specially used for Chinese gooseberries, which has the functions of cold resistance and consists of the following raw materials according to weight percentage: 0.1 to 8 percent of DMSO, 0.05 to 5 percent of trimethylene glycol, 0.05 to 5 percent of salicylic acid, 0.05 to 2 percent of compound ammonium nitrate, 1 to 15 percent of humic acid, 0.5 to 10 percent of chitosan, 1 to 10 percent of citric acid, 2 to 15 percent of urea, 1 to 10 percent of borax, 1 to 20 percent of zinc sulfate, 0.5 to 10 percent of ferrous sulfate, 0.05 to 5 percent of ammonium molybdate, 1 to 15 percent of manganese sulfate, 0.1 to 2 percent of SDBS and 35 to 80 percent of water.

本发明提供一种具有抗寒作用的猕猴桃专用叶面肥，它由下述各组分重量百分比的原料组成：二甲基亚砜0.1％～8％、丙二醇0.05％～5％、水杨酸0.05％～5％、复硝铵0.05％～2％、腐殖酸1％～15％、壳聚糖0.5％～10％、柠檬酸1％～10％、尿素2％～15％、硼砂1％～10％、硫酸锌1％～20％、硫酸亚铁0.5％～10％、钼酸铵0.05％～5％、硫酸锰1％～15％、十二烷基苯磺酸钠 0.1％～2％、水35％～80％。

The company spirit of "lowest price, best quality, best service" business principles, the industry enjoyed a high reputation at the same time the Company also sells feed-grade ferrous sulfate, trisodium phosphate, barium hydroxide, barium sulfate precipitation and other inorganic products, is the number of brand-name products in central China Chemical Agents.

公司本着&价格最低、质量最好、服务最棒&的经营原则，在业界享有很高的声誉，同时本公司还销售饲料级硫酸亚铁、磷酸三钠、氢氧化钡、沉淀硫酸钡等无机产品，是全国多家名牌化工产品的华中地区代理。

Results MRS medium was more suitable for producing bacteriocin than other media. The maximum plantaricin production was obtained in modified MRS medium containing 10 g/L maltose and 10 g/L glucose, 10 g/L yeast extract, 10 g/L tryptone and 2g/L tri-ammonium citrate, 1 mL/L Tween80, 6 g/L K2HPO4 ?

最佳培养基为MRS培养基；优化后的培养基配方为葡萄糖10 g/L，麦芽糖10 g/L，酵母提取物10 g/L，蛋白胨10 g/L，柠檬酸三铵2 g/L，吐温80为1 mL/L，K2HPO4·3H2O 6 g/L，乙酸钠5 g/L，硫酸镁0.2 g/L，硫酸锰

As catalyst, the tungstosilicic and phosphato-tungstic acids have similar catalytic activities which are six times more than that of sulfuric acid in the same reactive conditions.

钨硅酸和磷钨酸具有相似的活性活性，在同样条件下，其速度常数均为硫酸的六倍，其选择性为硫酸的3倍。

Acylvanadium sulfate is prepared by mixing coal mine containing vanadium, fluorite mine and sulphuric acid, then pumped in the reactive tank, further chemical combination and dissolving, acylvanadium sulfate enters in solution, qualified vanadic oxide is prepared.

本方法是将含钒石煤矿、萤石矿和硫酸调浆后，泵入反应槽中，进行化合和溶解，生成硫酸酰钒而进入溶液，经液固分离后得到含钒浸出液，浸出液经采用铁屑还原、氨水中和、萃取、反萃、氨水沉钒、煅烧等成熟工艺处理后，便产出合格五氧化二钒。

Over a six-week period, a small group of people with type 2 diabetes were given 75 to 300 mg of vanadyl sulfate per day.

硫酸氧钒，钒一种形式，可以改善血糖2型糖尿病患者控制。196 197在6型星期内，一小部分人2型糖尿病198人给予75至每天300毫克硫酸钒。

A catalyst for decomposing an organic halide, characterized as comprising a water-insoluble vanadyl sulfate or as being a composite catalyst comprising the vanadyl sulfate and a specific oxide and a specific sulfate.

一种分解有机卤化物的催化剂，其特征在于包括水不溶的硫酸氧钒或者是包括硫酸氧钒和一种特定的氧化物和一种特定的硫酸盐的复合催化剂。

Weaky basic anion-exchange resin was used to isolate and purify fucoidan from kelp Laminaria japonica, and phenol-H2SO4 method was applied to determine total carbohydrates and the optimal processing condition.

对弱碱性阴离子交换树脂分离纯化海带岩藻聚糖硫酸酯的工艺条件进行了研究，并采用苯酚－硫酸法测定总糖浓度绘制解吸曲线，确定最佳样液的pH值和洗脱流速。

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％。