間乙烯基苯 的英文怎麼說
中文拼音 [jiānyǐxījīběn]
間乙烯基苯
英文
m-vinyltoluene-
We have calculated one - and two - photon absorption cross sections of the lowest excited states of a series of molecules combined with benzene, stilben, thiophene as center attached with amine, diphenylamine, diethylamine as electron - donor and nitryl as electron - acceptor ; the effects of molecular length, n center and electron - donor on two - photon absorption cross sections have been studied and all calculations have been carried out using the density functional theory at an ab initio level. it is found that the molecular length and the one - photon absorption intensity are quite strongly c orrelated factors, and that a corresponding correlation for the two - photon absorption is decreasing. it is also found that a most crucial role for the two - photon absorption is played by the n center
我們分別以苯、二苯乙烯、噻吩為中心,氨基、二苯氨基和二乙氨基為電子給體,硝基為電子受體組合形成的分子為研究對象,在從頭計算的水平上用密度泛函理論計算了這些分子在低激發態下的單、雙光子吸收強度,重點研究了分子的長度、中心和給體的供電子能力對分子單、雙光子吸收的影響。研究結果表明,分子長度與單光子吸收強度之間有密切關系,而在雙光子吸收中這種關系較弱;中心在雙光子吸收中具有重要的作用;在中心和受體一定的情況下,增加給體的供電子能力,可提高雙光子吸收強度。The substitution of pervaporation for traditional separation in organic mixtures is of energy - saving and environment - protecting significance. in this paper, pervaporation of two kinds of organic mixtures is investigated : one is using ca membrane and ca - eva ( ethylene - co - ethylene acetate ) composite membrane for methanol removal from mtbe ( methyl t - butyl ether ), focused on the influence of casting solvent mixtures ; the other is utilizing proper membrane stuff and additive to separate p - xylene from m - xylene
本文對兩類有機有機混合體系進行了滲透汽化膜過程的研究,其一為醋酸纖維素( ca )膜及ca -乙烯醋酸乙烯共聚物( eva )復合膜用於甲基特丁基醚( mtbe )中少量甲醇( 5 meoh )的脫除,探討鑄膜混合溶劑及后處理技術對膜分離性能的影響。其二為運用適當的膜材料及添加劑去除間二甲苯( mx )中的少量對二甲苯( 10 px ) 。This is attributed to the stabilization of the excited state of intermediate of luminol by the interaction with the positively charged pee modified layer
荷正電的聚乙烯亞胺修飾分子與魯米諾激發態3 -氨基鄰苯二甲酸陰離子間靜電相互作用而導致的激發態穩定性增加;對魯米諾分子的電化學發光的增強起著關鍵作用。To check the efficiency of the insulations, by varying the thickness, the width and the position of the insulations ( expandable polystyrene insulation layer ( eps ) ; polyurethane ( pu ) ) and the material of the roadbed surface in the calculation, the maximum thawed depths during the following 50 years on permafrost under the roadbed were simulated
為了檢驗保溫材料的效果,計算時採用改變保溫材料聚苯乙烯板( eps )和聚胺脂板( pu )的厚度、寬度、埋設位置及路基表面條件,來模擬路基面下多年凍土季節最大融化深度在今後50年內隨時間的變化。The molecular weight of sppms was in the range of 4x 104g / mol to 10 x 104g / mol, and the molecular weight distribution was from 1. 6 to 6. 0
P -甲基苯乙烯與苯乙烯共聚時, p -甲基苯乙烯共聚能力高於苯乙烯,二者傾向于無規共聚,仍為間規聚合物。Mirtazapine was prepared by a seven - step reaction, namely nucleophilic ring - opening reaction, chlorination, cyclization, uncleophilic substitution, hydrolysis, reduction and cyclization from styrene oxide and n - methylethanolamine as the starting materials, with overall yield of 22. 6 %
摘要以環氧苯乙烯和n -甲基乙醇胺為起始原料,經親核開環、氯代和環合反應得到中間體1 -甲基3 -苯基哌嗪。Antibody, which was coated to ps - mpm by using immunology method, reacted to special corresponding antigen. the heat change in the adsorption process of antibody to mpm and the reaction process to antigen were measured by using microcalorimetry. the adsorption mechanism and the special reaction were analyzed, which established the primary base of profound study on the aspect of biology application for mpm
本文採用免疫學方法,在聚苯乙烯磁性微球表面包覆了抗體,並與武漢理一1幾大學碩十學位論文特定的抗原發生特異性反應,利用tamair等溫微量熱檢測儀測量了微球與抗體吸附過程及與抗原發生特異性反應過程中的熱量變化,探討了微球與抗體之間的吸附機理和與抗原之間的特異性反應,為更為深入地研究磁性微球在生物方面的應用奠定基礎。The copolymerizations of p - methylstyrene and styrene, styrene and ethylene were also investigated using some of these catalytic systems. the three kinds of catalysts showed their own polymerization principles. the changes of polymerization activity and polymer properties depended on the structure of complexes, different polymerization conditions such as the catalyst concentration, the molar ratio of al to ti, the polymerization temperature and reaction time
三類催化劑催化苯乙烯和p -甲基苯乙烯均聚時都有各自一定的聚合規律,不同的配體結構,聚合條件催化劑濃度、鋁鈦比、聚合溫度和反應時間對聚合活性以及聚合物的性質有很大影響。Ethyl 3 - benzoylacrylate ( e3ba ) is pale yellow liquid, it can ' t melt in water. it is one of the important intermediate for synthesizing technical products
苯甲酰基丙烯酸乙酯為淡黃色透明液體,不溶於水,能溶於大多數有機溶劑,是原藥合成中重要中間原料之一。分享友人