次磷酸次磷酸

The proposed electrooxidation mechanism well explains the effects on voltammetric behaviour of the factors such as potential sweep rate, temperature of medium and hypophosphite concentration.

所述机理可以较好地解释电位扫描速度、介质温度及次亚磷酸根浓度对伏安行为的影响。

Objective: To research the expression of phosphodiesterase 3A (PDE3A) in zygote of mouse during the first mitosis.

目的：研究磷酸二酯酶3A(PDE3A)在小鼠受精卵第1次有丝分裂中的表达。

The difference of ammonia, amido, amino group and quaternary ammonium salt, some common wrong expressions on them, and the valence state of phosphorus in some of its oxyacid were pointed out.

指出了氨、氨基、胺基及季铵盐的区别及其常见错误表述，以及磷的几种含氧酸中磷的价态，并着重指出没有&次亚磷酸&的叫法。

With 7-Al2O3 treated by the phosphoric acid as the carrier, CuO/NiO as the active components, a catalyst was prepared for the synthesis of cyclohexylamine by aminolysis of cyclohex-anol.

以磷酸预处理的γ-Al2O3为载体，二次浸渍CuO/NiO活性组分制备催化剂，用于环己醇合成环己胺的临氢氨解反应。

The invention provides a chemical nickel tungsten phosphorus plating solution for magnesium alloy, which consists of 10-20 g/L of nickel sulfate, 7-15 g/L of sodium tungstate, 29-50 g/L of sodium citrate, 14-30 g/L of sodium hypophosphite, 14-30 g/L of sodium carbonate, 5-12 g/L of ammonium bifluoride, additive accounting for 0.00005-0.003 percent of total weight and the balance being water.

本发明提供的是一种镁合金化学镀镍钨磷镀液。它由硫酸镍10-20g/L、钨酸钠7-15g/L、柠檬酸钠29-50g/L、次亚磷酸钠14-30g/L、碳酸钠14-30g/L、氟化氢铵5-12g/L、占总重量0.00005-0.003％的添加剂和余量的水组成。

Methods Myocardial ischemia was induced by subcutaneous injection of ISO (30 mg/kg for two days, once a day). The experimental animals were randomly divided into the normal group, ISO group, positive control group and three crocetin groups (25, 50, 100 mg/kg). Cardiac indexes were examined. The level of LDH, CK, MDA in serum were measured. The content of MDA, GSH-Px and the ATPase activity heart and mitochondria were assayed by colorimetric analysis. The histopathological change of myocardia was investigated by HE staining.

采用大剂量ISOsc诱导产生大鼠急性心肌缺血模型(1SO30mg／kg，每日一次，连续2d)，实验大鼠随机分为正常组、ISO模型组、阳性对照组和3个西红花酸给药组(25，50，100mg／kg)，测定心脏系数和血清中乳酸脱氢酶、磷酸肌酸激酶和丙二醛含量，观察心肌组织谷肮甘肤过氧化物酶、Na^ ，K^ —ATP酶和Ca^2 ，Mg^2 —ATP酶活性及心脏病理改变，观察西红花酸的保护作用。

Phosphorus generation fully originates from reduction reaction of hypophosphorous during EN process.

利用量子化学软件高斯03(G03)分子轨道理论中的从头计算法，计算了次亚磷酸在还原过程中可能的中间产物和过渡态的振动频率和总能量。

In this paper, Ti PbO 2 and Ti Ru used as anode and stainless steel used cathode in producing hypophosphorous acid by electrolytic process with four compartment electrodialytic cell was studied.

本文采用四室电渗析槽，分别以钛涂钌电极和钛基二氧化铅电极为阳极，不锈钢为阴极，进行了电解法制备次磷酸的实验研究。

A composition that can be used as catalyst is disclosed, which comprises or is produced by combining, a titanium compound; either a complexing agent, a combination of a complexing agent, hypophosphorous acid or a salt thereof, and optionally a solvent, a zirconium compound, or both, combinations thereof; a phosphorus compound; and, optionally, a solvent.

公开了一种可用作催化剂的组合物，该组合物包括钛化合物；络合剂，或络合剂、次磷酸或其盐和选择性使用的溶剂、锆化合物或二者的组合，或它们的组合；磷化合物和选择性使用的一种溶剂；或是用它们的组合制成的催化剂。

Theoretical studies on various geometrical structures of Hypophosphorous acid were carried out using DFT theoretical methods,at the B3LYP/6—311++G** level.Intramolecular proton transfer isomerization has also been studied using the intrinsic reaction coordinate.

采用量子化学密度泛函B3LYP方法，在6—311++G**基组水平上全优化得到了硫代次磷酸的硫酮式和硫醇式两种构型异构体以及相应的对映异构体，同时对分子内质子转移异构化反应微观机理进行了理论分析。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。