查询词典 bromide

The results show that Pd (superscript 2+) combines with KBr and cetyl pyridinium bromide into a ternary ion association precipitate2(PdBr4) in the aqueous solutions, which floated above the surface of water phase with clear interface.

结果表明，在水溶液中，Pd(上标2+)与溴化钾、溴化十六烷基吡啶形成不溶于水的三元缔合物2(PdBr4)，此三元缔合物可浮于水相上层分成界面清晰的液－固两相。

The floatation rate of Pd (superscript 2+) reaches 100% when the concentrations of NaNO3, KBr and cetyl pyridinium bromide in solution are 0.05 g/mL, 3.0×10^(-2) mol/L, 5.0×10^(-4) mol/L(pH 4.0), respectively. Pd (superscript 2+) could be separated from Ru (superscript 3+), Al (superscript 3+), Cr (superscript 3+), Ni (superscript 2+), Ga (superscript 3+), Fe (superscript 3+) and Zn (superscript 2+) by floatation quantiatively. A method of flotation separation and enrichment of Pd (superscript 2+) was established.

当溶液中硝酸钠、溴化钾、溴化十六烷基吡啶的浓度分别为0.05 g/mL，3.0×10^(-2)mol/L，5.0×10^(-4)mol/L，在pH 4.0时，Pd(上标 2+)的浮选率达到100%，Pd(上标 2+)可与Ru(上标 3+)，Al(上标 3+)，Cr(上标 3+)，Ni(上标 2+)，Ga(上标 3+)，Fe(上标 3+)，Zn(上标 2+)定量分离，据此建立了浮选分离和富集Pd(上标 2+)的新方法。

A series of α-(fluoro-substituted phenyl)pyridines have been synthesized by means of a palladium-catalyzed cross-coupling reaction between fluoro-substituted phenylboronic acid and 2-bromopyridine or its derivatives. The reactivities of the phenylboronic acids containing di- and tri-fluoro substituents with α-pyridyl bromide were investigated in different catalyst systems.

利用钯催化的SUZUKI偶联反应，以氟取代的苯硼酸与2-溴吡啶为原料合成了系列新的邻吡啶芳香化合物，研究了二及三氟取代的苯硼酸与溴代吡啶在不同催化体系中的反应性质。

In our work, as a preliminary experiment, the N-phenacylisoquinolinium bromide was reacted with methlhydrazine in refluxed acetic acid. Unexpectedly, 2-methyl-1,2,3-triazole was obtained. The further study of this reaction led to a more simple starting material,α-bromoacetophenone to react with methylhydrazine, obtaining the same product.

我们在研究N-苯乙酰异喹啉溴化物与甲肼在冰醋酸中的反应时，意外地得到了2-甲基-4-苯基-1，2，3-三氮唑，经过进一步的研究发现α-溴代苯乙酮与甲肼也能得到同样的产物。

A method for the micro determination of germanium by flow injection－spectrophotometry with CCD diode array detector is reported, based on the color reaction between germanium and salicyl fluorone in the presence of cetyl trimethyl ammonium bromide. A good linear relationship was obtained in the range of 0～3.0 mg/L for germanium.

研究了在溴化十六烷基三甲铵存在下，锗与2，3，7－三羟基－9－水杨基荧光酮－6的显色反应，采用二极管阵列检测器，建立了检测微量锗的流动注射分光光度法。

It is necessary to carry out a thorough study on pest control technology with DMDS, with an expectation of obtaining a new fumigant of methyl bromide alternative.2. Investigation of the toxicity of fumigation on adult and mixed stages of the three most tolerant insect species -- Sitophilus oryzae, Rhyzopertha dominica and Tribolium castaneum -- under a range of EtF、DMS and DMDS doses in a Flow-through Fumigation System shows that the FTFS procedure offers a constant concentration of fumigant with low CO2 concentrations and ensures that the fumigant toxicity is effectively not compromised by CO2. In comparison with chamber fumigation method, the toxicity data of EtF、DMS and DMDS obtained from this experiment is more accurate by using FTFS.

主要研究结果如下：1、甲酸乙酯和二甲基二硫对仓储害虫具有良好的控制作用，应加快甲酸乙酯替代溴甲烷防治仓储害虫开发应用，同时，二甲基二硫是很有潜力的仓储害虫防治熏蒸剂，要深入进行二甲基二硫控制有害生物的技术研究，以期获得新的溴甲烷替代熏蒸剂。2、利用循环熏蒸系统测定了甲酸乙酯、二甲基二硫和甲硫醚对米象Sitophilus oryzaeL。

Electrochemical behaviour of ethidium bromide on a wax impregnated spectrographic electrode was studied.

研究了溴化乙锭在浸蜡光谱石墨电极上的电化学行为，用电化学循环伏安法及紫外-可见光谱法对溴化乙锭与 DNA的作用进行了研究，得出溴化乙锭与 DNA发生嵌插作用的结

MCM-41, HMS, and MSU mesoporous silica molecular sieves were prepared via S〓I〓, S〓X〓I〓, S〓I〓, and N〓I〓 assembly pathway, in which cetylpyridium bromide, tetredecylamine, and polyoxyethylene (10) stearyl ether was used as the template, respectively. The mesostructures were characterized and confirmed by XRD, N〓 adsorption/desorption, TG, and high resolution TEM. The difference and relationship between these mesophases were also investigated.

分别以溴代十六烷基吡啶、十四胺和十八烷基聚氧乙烯基醚为模板剂，通过S〓I〓、S〓X〓I〓、S〓I〓和N〓I〓&超分子组装模式&合成了具有MCM-41、HMS和MSU结构的介孔SiO〓分子筛，用XRD、N〓吸附/脱附、TG和高分辩TEM等方法对它们的骨架和孔道结构进行了表征，并系统地比较了这几种介孔结构之间的区别与联系

Titanium incorporated mesoporous molecular sieves Ti-MCM-41, Ti-HMS, and Ti-MSU were synthesized through S〓I〓, S〓I〓, and N〓I〓 pathways using cetylpyridium bromide, tetredecylamine, and polyoxyethylene (10) stearyl ether as the structure-directing agents, respectively. The framework structure and the titanium coordination environment of these materials were characterized by XRD, N〓 adsorption/desorption, TG, TEM, FT-1R, DR UV-Vis, and ICP-AES. It was confirmed that the titanium was highly dispersed in the silica-based framework positions, and all samples were free of extra framework titanium impurities. The catalytic performance of these titanium containing mesoporous materials was investigated in the oxidation of styrene with aqueous H〓O〓 as the oxidant.

以TEOS和TBOT为硅源和钛源，分别以溴代十六烷基吡啶、十四胺和十八烷基聚氧乙烯基醚为模板剂，通过S〓I〓、S〓I〓和N〓I〓方式合成了含钛的介孔分子筛Ti-MCM-41、Ti-HMS和Ti-MSU，用XRD、N〓吸附/脱附、TEM、FT-IR、DR UV-Vis和ICP-AES等方法对它们的骨架结构、孔道结构以及钛原子的存在方式等进行了系统表征，结果表明钛原子以高分散的形式存在于以SiO〓为基本单元的介孔分子筛的骨架结构中，制备过程中未形成聚集态的骨架外金属氧化物物种。

Different cation asphalt emulsion was prepared taking cetyl trimethylammonium bromide,cetyl trimethylammonium chloride and stearyl trimethylammonium chloride as emulsifier.

以十六烷基三甲基溴化铵、十六烷基三甲基氯化铵及十八烷基三甲基氯化铵为乳化剂制备了不同的阳离子乳化沥青，按ASTMD244的方法获取乳化沥青蒸发残留物，测试乳化沥青蒸发残留物的针入度和其中3种乳化沥青蒸发残留物在不同温度下的黏度，并获得相关黏温性。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。