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CALORIMETRIC TITRATION FOR COORDINATION REACTION OF 2, 3-BENZO-8, 11, 15-TRIMETHYL-18-CROWN-6 WITH ALKALI AND ALKALINE EARTH METAL IONS

若干碱金属及碱土金属离子与2,3-苯并-8,11,15-三甲基-18-冠-6配位反应的量热滴定研究

Research on techniques for the synthesis of ACR impact modifier with core-shell structure;2. Preparation of polymer-tungsten-silica composite microspheres with multi-layer core-shell structures;3. Organosilicon-acrylate micro emulsion with core-shell structure was synthesized with OP-10,JFC and amyl alcohol nonionic compounded emulsifier by means of seeded emulsion polymerization.

运用种子乳液聚合工艺以OP-10/JFC/戊醇非离子复合乳化剂合成了具有核-壳结构的有机硅-丙烯酸酯微乳液,研究了复合乳化剂类型、丙烯酸酯单体、有机硅单体加入方式和含量、pH值、硫醇对微乳液聚合过程中稳定性和光泽度的影响,通过差示扫描量热仪和透射电镜对微乳液的结构进行了表征。

Organosilicon-acrylate micro emulsion with core-shell structure was synthesized with OP-10,JFC and amyl alcohol nonionic compounded emulsifier by means of seeded emulsion polymerization.

运用种子乳液聚合工艺以OP-10/JFC/戊醇非离子复合乳化剂合成了具有核-壳结构的有机硅-丙烯酸酯微乳液,研究了复合乳化剂类型、丙烯酸酯单体、有机硅单体加入方式和含量、pH值、硫醇对微乳液聚合过程中稳定性和光泽度的影响,通过差示扫描量热仪和透射电镜对微乳液的结构进行了表征。

By using microcalorimetric method, the growth thermogenetic curves of Rhizopus nigricans inhibited by four kinds of heavy metal ions are determined, parameters such as growth rate constants k, inhibitory ratio I, and half inhibitory concentration IC 50 etc.

用微量热法测定了Cu~(2+),Cd~(2+),Hg~(2+),Pb~(2+)等四种重金属离子对黑根霉菌生长抑制的产热曲线,得到了黑根霉菌在不同条件下的生长速率常数k,抑制率I,半抑制浓度IC_(50)等参数。

We review the dark decay of the electronic holographic phase grating before thermal fixing, and deduce the general analytic expression of the lifetime of thermal-fixed ionic holograms in the photorefractive crystal, by means of analogizing.

通过类比的方法,由热固定前的电子体全息相位栅的暗衰减得出了热固定后离子体全息光栅的衰减规律及其寿命的一般解析表达式。

In this paper, the corrosion behavior of stainless steel solar hot water tank in chloride medium was investigated based on anatomizing as well as wacro and micro examination of sampled products.

该文通过对不同地区使用中的不锈钢太阳能贮热水箱选取解剖,进行宏、微观检验,研究探索了常年处于含氯离子的水介质中的不锈钢热水箱最常见的腐蚀类型及规律。

The GIBS scheme can raises the phase transformation temperature to 850℃ and the agglomeration temperature to 800℃.

而GIBS制程达到晶相转换温度850℃与结块温度800℃的效果,其热稳定性比未做Ge布植的矽化镍与高了100℃,猜测其原因为高浓度的Ge在矽化镍/矽的界面聚集,平衡了在界面上的应力,使得热稳定性提升,除此之外,从TEM图中还可发现Ge离子布植提升了矽化镍的界面平坦度。

The complexes were characterized by elemental analysis,UV,IR,TG,NMR and molar conductance measurements.Their formulas were in accordance with C34H32O8N2LnCl·nH2O or 〔(L4)2LnCl·nH2O,Ln=Nd,n=4;Ln=Pr,Yb,n=2;Ln=Sm,Eu,Dy,n=1〕.All the water molecules were uncoordinated.Dinuclear complexes were observed in the coordination environment.The coordination number of central ions was nine.

经元素分析、红外光谱、紫外光谱、核磁共振谱、质谱、摩尔电导、差热热重分析确证结构,其化学式为C34H32O8N2LnCl·nH2O,简写为:(L42LnCl·nH2O,Ln=Nd,n=4;Ln=Pr,Yb,n=2;Ln=Sm,Eu,Dy,n=1;该类配体是以酚氧原子、亚氨基的氮原子、桥联的羧基氧原子以及氯原子同稀土离子配位,形成了九配位的双核配合物。

In the third chapter, eight new complexes of 4, 6-dimethylpyrimidine 2-thioacetic acid with rare earth metals has been synthesized and characterized by means of elemental analysis, molar conductivity, IR,〓 NMR and TG-DTA. The general formula of the complexes is Ln〓(n=4 or 5). In the complexes, the deprotonated ligand coordinated to the rare earth metal ions in chelate bidentate mode. 4 or 5 molecular of crystal water existed in the complexes.

第三章合成了八种4,6-二甲基嘧啶-2-硫代乙酸的稀土配合物,通过元素分析、摩尔电导、红外光谱、核磁共振氢谱和热重-差热对配合物进行了表征,研究结果表明,配合物的组成为Ln〓n=4或5),在配合物中配体羧基脱去质子后采用螯合双齿的方式与稀土离子形成配位键,同时,配合物中含有4或5个结晶水。

It is found that the ploating structure of copper power is related to mechanism of nucleus forming and content of silver;Thermal stability is affected by plating structure of silver-coated copper power.Silver-coated coppe...

结果表明:铜粉表面镀层结构与银离子形核长大机制和银含量有关;镀银铜粉的热稳定与表面镀层结构有关;完全包覆结构的镀银铜粉具有较好的热稳定性,抗氧化温度可以达到800℃以上。

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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面,更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?