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The geometries,electronic structures,polarizabilities and hyperpolarizabilities,as well as the UV-Vis spectra of the two organic dye sensitizers containing bis-dimethylfluorenyl amino benzofuran were studied via density functional theory and time-dependent DFT.

运用密度泛函理论和含时密度泛函理论研究了两种含二-二甲基芴氨基苯并呋喃基团的有机染料敏化剂的几何结构、电子结构、极化率和超极化率以及紫外可见谱。

Synthesis of 2, 6-Bis (4-aminophenoxy) Benzonitrile and Polyimide Film Therefrom

篇名 2, 6-双(4-氨基苯氧基)苯甲腈的合成及其聚酰亚胺薄膜

The optimal separating condition of chromatography analysis was: Shimadzu VP-ODS 150mm4.6mm as chromatographic column; acetonitrile/water (12/88,V/V, Contained 1.25mmol/l phosphoric acid) as mobile phase with flow rate of 1.0ml/min. Macroporous ion exchange resins and activated carbon were applied to enrich the trace level impurities and the main impurities was determined by LC-MS and GC-MS.They were : Benzonitrile , 2-Methyl-8-hydroxyquinoline, 2,6-Pyridinediamine , O-ethyloxime Cyclo-hexanone and compound with 220 molecular weight .

采用离子树脂和活性炭吸附富集这些微量的杂质,并通过液质联用和气质联用对杂质进行了定性分析,鉴定了影响290nm吸收的主要杂质为苯甲腈,2甲基-8羟基喹啉,2,6二氨基吡啶,O-乙基环己酮肟和分子量220的物质。

To improve the cyano reactivity, cyano-terminated PPENs were prepared by the end-capping reaction of PPEN-OL with CBN; benzonitrile terminated polys were also prepared by the polycondensation of excess 4,4'-oxydianiline with 1,2-dihydro-2-(4-carboxyphenyl)-4-[4-(4-carboxyphenoxyl)phenyl]-phthalazinone, followed by end-capping with CBA. The polymers synthesized exhibited good solubility in NMP, DMAc and DMF, and were crosslinked to afford phenyl-s-triazine-containing polymers under the similar conditions.

为提高氰基活性,以对氯苯腈为原料,对PPEN-OL进行封端,设计合成了含氰端基的聚芳醚腈;以含二氮杂萘酮联苯结构二酸单体与4,4'-二氨基二苯醚为原料,经Yamazaki膦酰化缩聚,并用对氰基苯甲酸进行封端,合成了含氰端基的聚芳醚酰胺。

Three ways leads to the synthesis of fenclorin, one way discussed here has 3 steps. Stepl :benzonitrile using as raw material goes though dry hydrogen chloride and becomes a-imino phenylmethyl ether after meet carbinol.

解草啶的合成主要有三条路线,本文选取合成路线是以苯甲腈为原料,经三步反应而成:1、苯甲腈在干燥的氯化氢通入,与甲醇形成亚氨基苯甲醚,通入氨气后置换甲氧基得到苯基脒盐酸盐(收率76.18%)。2、苯基脒盐酸盐在碱性条件下与丙二酸二乙酯环合而得嘧啶醇(收率84.39%)。3、嘧啶醇在三氯氧磷中羟基被氯化得到产品解草啶(收率87.29%)。

Benzyl p amino benzoate ; PTC ; synthesis ; orthogonal design.

氨基苯甲酸苄酯;合成;相转移催化;正交设计

The relationship between glycosidic precursors and its aroma components was studied. The results showed: The dominant aroma constituents in aroma oil of jasmine tea include benzyl acetate, linalool, methyl antyranilate, cis-3-hexenyl benzoate, benzyl alcohol, indole, farnisene, methyl benzoate, methyl salicylate, geraniol, cis-3-hexenyl-acetate etc.; and the higher the concentration of these components is, the higher the quality of jasmine tea is.

结果表明:茉莉花茶香精油中,含量较高的有乙酸苄酯、芳樟醇、邻氨基苯甲酸甲酯、苯甲酸顺-3-己烯酯、苯甲醇、吲哚、法尼烯、苯甲酸甲酯、顺-3-己烯酯、水杨酸甲酯、橙花叔醇、乙酸顺-3-己烯酯、香叶醇;这些成分的含量随花茶品质的提高而增多;研究表明,花茶的高含量香气成分也是茉莉花中的主要赋香成分。

The spectrophometric determination ofγ-Aminobutyric acid in brown rice was studied based on Berthelot reaction.

基于Berthelot显色反应,研究了快速测定糙米中γ-氨基丁酸含量的比色法。

This response is characterized by stabilization of the mitochondrion and increased mitochondrial biogenesis, resulting in attenuation of oxidative c-Jun N-terminal kinase activation.

这个反应的特征在于线粒体的稳定性和线粒体合成的增加,从而导致具有氧化特性的c-Jun氨基末端激酶活化的衰减。

Domestic Violence in Pregnancy; Psychosocial Characteristics; Postpartum Depression; Risk Factors; Neonate; Glutamate; r-aminobutyric acid; plasma cortisol; COMT gene; 5-HT gene; Single nucleotide polymorphism; Temperament; Mental Development Index; Physical Development Index; Gene-Environment Interaction; Neural Network; Biomathematic Model

医药卫生科技,预防医学与卫生学,计划生育与妇幼保健孕期家庭暴力;社会心理特征;产后抑郁;危险因素;新生儿;谷氨酸; r-氨基丁酸;血浆皮质醇; COMT基因; 5-HT基因;单核苷酸多态性;气质;智力和运动发展指数;遗传-环境交互作用;神经网络;数学模型

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推荐网络例句

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候,里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色,卵在发育96h后卵基本全部孵化。

There was a conflict between plebs and patricians in ancient Rome in 494BC.

在公元前494年,罗马发生了一次平民反对贵族的斗争。