反应率

Removal and recovery of nitrogen and phosphorus from wastewater by struvite crystallization,which has the advantages of high removal rate and rapid reaction rate.

淀法处理含氮磷的废水，具有氮磷去除率高，反应速度快的优点；同时，回收氮磷生成的磷酸铵镁。

Using struvite sediment to remove the nitrogen in waste water has many advantages,such as high removal rate of nitrogen and reaction speed,small amount of sludge,reclaiming the ammonia nitrogen etc.

在废水处理中采用鸟粪石沉淀法脱氮，具有氨氮去除率高、反应速度快、污泥体积小的优点，同时可以回收氨氮。

Adding purified stylar S-RNase from Prunus mume cultivar 'Gessekai' to liquid medium, for cultivating self- and cross-pollen at temperatures lot, 25℃ and 35℃, respectively, then determining the rate of pollen germination and the length of pollen tube after different periods of cultivating time.

在液体培养基中添加从果梅'月世界'花柱中纯化的S-RNase，并分别于10℃、25℃和35℃条件下培养自花、异花花粉，测定不同培养时间后的花粉萌发率和花粉管生长长度；离体条件下进行果梅花柱S-RNase降解花粉管RNA反应后，用琼脂糖凝胶电泳检测不同温度条件下自花、异花花粉管RNA被降解的程度。

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％。

The results showed that adding the external tannase can improve the micro-filtration efficiency and the yield rate of micro-filtrated liquor,and the micro-filtration process is benefi...

结果表明：外源单宁酶的加入能有效提高微滤工效和微滤液的生化得率，微滤过程有利于单宁酶酶促反应朝产物方向进行。

The experimental study on the treatment of terephthalic acid industrial wastewater by heterogeneous catalytic oxidation has been carried on.

采用非均相催化氧化法处理对苯二甲酸工业废水，研究了反应时间、氧化剂投加量、废水pH和废水起始浓度对CODCr去除率的影响。

It was found that tribromide quaternary ammonium salt was an excellent bromide reagent, which was easy to handle and had low toxicity. The reaction can process rapidly and has high bromide rate.

研究结果表明，三溴季铵盐是一种性能优良的固体溴化剂，操作方便，对人体的危害性小，反应速度快，溴化率高。

The title compounds were prepared using chlororesorcinol and trimellitic anhydride as the starting materials in seven steps, with fine overall yields.

以氯代间苯二酚和苯三酸酐为起始原料经7步反应得到了目标化合物，产率良好。

In addition, a highly efficient method of preparing Pd〓 was investigated by directly reacting PdCl〓 with triphenylphosphine in pyridine.

并发现由PdCl〓和PPh〓直接在吡啶溶剂中反应可高产率地制备〓。

It was shown that the purity of the aim product was higher than 99% and its yield was 60%~70%. The intermediate product p-tertbutoxycarbonyloxybenzaldehyde could be synthesized conveniently and quantitatively. The main byproduct was triphenylphosphine oxide.

结果表明，所得目标产物对特丁氧酰氧基苯乙烯纯度达99%以上，产率为60%~70%，中间产物对特丁氧酰氧基苯甲醛可以定量合成，反应的副产物主要是三苯基氧化膦。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。