查询词典 NH

The improved method selects the absorbing wavelength of 618 nm and the reaction time of 40 min, uses the NH4Cl-NH3 buffer solution (pH=8.0) and BTB alcohol solution (0.4 g/L) respectively of 5 ml and 1.5 ml in the 50 ml volumetric flask, and can test the concentration of imidazolinyl-quaternary-ammonium-salts in range of 0 mg/L to 80 mg/L.

利用改进的显色反应法检测时，吸收波长选择618 nm，显色时间40 min， 5 ml容量瓶中NH4Cl-NH：缓冲液(pH=8.0)和BTB乙醇溶液(0.4 g/L)的添加量分别为 5 ml、15 ml，适用检测的咪唑啉季铵盐浓度为0~80 mg/L。

Results:The recovery degree of liver function and the descent range of serum NH + 4 of therapy group were superior to those of contrast group.

结果 ：治疗组患者肝功能的恢复程度和血氨的下降幅度均好于对照组，且临床症状的改善较对照组显著，病程明显缩短，预后较好，存活率明显提高(P 0 5 )。

Through chemical reaction between Ga and NH〓, high-density of regular-shaped GaN nanorods was fabricated on the substrates. The distinct morphology of the GaN nanorods lies in their prism-like out shape and most of them have a quadrilateral cross section.

通过金属镓与氨气反应，制备了大量的具有规则外形的GaN纳米棒，这些纳米棒的典型形貌在于其四边形的横截面。

Aromaticity of Various Possible Isomers of C36XX=O,NH,S

C36X各种可能异构体的芳香性研究

Aromaticity of Various Possible Isomers of C36XX=O, NH, S

篇名 C36X各种可能异构体的芳香性研究

A new method of oscillographic titration for the determination of nitrogen content in flour is described The sample was digested with H 2SO 4 Na 2SO 4 CuSO 4 Oscillographic titration is conducted on NH + 4 with Na TPB method,then calculate the nitrogen content Compared with standard methods,this method choose innoxious titrant,has a sharp titration endpoint, needs no distillation absorption and indicator It has the advantages of being easy and quick in operation,and the determination re...

研究了面粉中蛋白质含量的示波滴定法。样品用H2 SO4 Na2 SO4 CuSO4 消化处理，N以NH4 +的形式存在于试液中，用过量四苯硼钠沉淀铵，沉淀过滤，过量的四苯硼钠用氯化四乙基铵标准溶液返滴定，以四苯硼钠切口消失为终点，计算出氮含量，再换算为蛋白质含量。与通用的标准分析方法相比较，本方法所用试剂无毒，终点变化敏锐，不需蒸馏吸收，不外加指示剂，具有操作简便、快速，测定结果准确可靠。

By comparison of long-term exposure with long-term immersion, the release amount of ammonium, nitrite, nitrate and dissolved phosphorus into the overlying waters from the sediments were increased during the reflooding after long-term dessication, reflecting that long-term exposure stimulated sediments as a releasing source of nutrient and accelerated the biogeochemical cycle of nutrient in the tidal flat ecosystem.

通过对比分析发现，长期暴露之后能够增加沉积物向上覆水体释放NH〓-N、NO〓-N、NO〓-N和TDP，显示了长期暴露加剧了沉积物作为营养盐的源效应，并且加速了潮滩生态系统内营养盐的生物地球化学循环过程。

The reaction is assumed to be most likely initiated by an electrophilic addition of NO〓 to the carbon atom of carbon-nitrogen double bonds.

二者的不同之处在于：酮腙C=N双键上不存在H，可通过消去NH上的质子，生成硝基偶氮化合物。

The research of produce potassium nitrate by using ammonium nitrate (NH 4NO 3) potassium chloride as raw materials, the methodology was double decomposition reaction and non-circulation.

研究了以硝酸铵和氯化钾为原料复分解非循环生产硝酸钾的工艺；实验制得了农业级的硝酸钾。

The NH〓/CO〓=2in accordance with the constitutes of ammonium carbamate can not be separated by ordinary methods, The separation way which used the different absorption rates of high gas velocity between ammonia and carbon dioxide in aqueous solution has been made up in this study.

在实验室高速喷射鼓泡反应器的条件下，研究了M〓/M〓=2的混合气体在水溶液中的选择性吸收过程，获得了良好的选择性效果：连续吸收的选择性因子S〓在2.06～8.23之间，S〓在2.86～10.83之间。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。