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Abstract] Objective: To observe the clinical effect of ambroxol on infants pneumonia as an adjunctive therapy.

目的:观察氨索注射剂辅助治疗婴幼儿肺炎的临床疗效。

1A series ofω-alkylmercapo acid were synthesized by two methods:one involved the reaction of the appropriateω-bromoalkyl acid with mercaptide under the presence of base;the other method was used only for the long alkyl compound by the reaction ofω-alkenyl acid and alkanethiol in the presence of AIBN.

正是基于以上考虑,本论文探索了合成下沿带有硫醚官能团,而上沿带有偶氮官能团的杯[4]芳烃衍生物的方法,进行了以下研究: 1采用ω-代羧酸和烃基硫醇在碱性条件下发生反应,或由ω-烯基羧酸和硫醇在AIBN的存在下反应,得到了ω-硫醚羧酸,使用氯化亚砜将羧酸转化为酰氯。

The reaction of monoporphyrins having different functional groups with dibromopropane gave metalloporphyrin potassium trimer with two alkoxyl linkages(C144H104N12O8K16)and square array tetramer with the property to quench fluorescence.

利用合成带有混合取代基团的卟啉单体和二丙烷反应得到了具有荧光淬灭性质的线状卟啉三聚体C144H104N12O8K16和方阵式四聚体。

Four soluble poly(p-phenylene vinylene) derivatives with asymmetric alkoxyl substituents, poly (2-methoxy-5-butoxy)-p-phenylene vinylene, poly [2-methoxy-5-(3'-methyl)butoxy]-p-phenylene vinylene, poly (2-methoxy-5-hexyloxy)-p-phenylene vinylene and poly (2-methoxy-5-octoxy)-p-phenylene vinylene, were prepared by dehydrochlorination reaction with using p-hydroxyanisole and alkyl bromide as raw materials.

以对羟基苯甲醚和代烷烃为原料,采用强碱诱导的脱氯化氢缩合聚合法合成了四种可溶性不对称烷氧基取代聚对苯乙炔衍生物,分别为聚(2-甲氧基-5-丁氧基)对苯乙炔、聚[2-甲氧基-5-(3'-甲基)丁氧基]对苯乙炔、聚(2-甲氧基-5-己氧基)对苯乙炔和聚(2-甲氧基-5-辛氧基)对苯乙炔。

The allylation reactions of aldehydes with allyl bromide were carried out in 76%~93% yields with Nd-SnCl2-H2O under ultrasound irradiation at room temperature for 50~60 min.

在Nd-SnCl2-H2O体系中,用烯丙基超声诱发下进行了一系列芳香醛的烯丙基反应,室温反应50~60min得76%~93%烯丙基化产物;而不用超声波时同样体系中搅拌3~4h高烯丙基醇产率为30%~86%。

The synthetic application of the multi-stereocenter β-bromo aldehyde 7a with quaternary carbon was demonstrated in the total synthesis of Amaryllidaceae alkaloid Lycoramine.

四、含有季碳的多立体中心β-代醛7a在天然石蒜科生物碱-Lycor--amine全合成中的应用研究。

The synthetic progress of polysuccinimide using maleic acid as original material was studied by two steps of aminization and polymerization. Changes of reactant and product composition in aminization reaction step was studied by using bromine value analysis method. It was found that amine salt and amide were main products in this step.

对以马来酐为原料合成聚琥珀酰亚胺的两个反应过程进行了研究,通过价测定法研究了胺化反应阶段反应物及产物各组分的变化情况,确定胺化反应阶段的产物组分主要是胺盐和酰胺。

The Antioxidization of ascorbic acid ,malic acid,tartaric acid,citric acid,p bromomandelic acid,aminoacetic acid and nitrilotriacetic acid for lard was studied.

研究了抗坏血酸、苹果酸、酒石酸、柠檬酸、对苦杏仁酸、氨基乙酸、氨三酸等七种有机酸对猪油的抗氧化作用。

Production of dye intermediates oxidation products have Anthraquinone, refined anthracene, carbazole, 1 - aminoanthraquinone refined benzene around anthrone, anthrone-bromo-benzene series around.

企业生产的染料中间体系列产品有氧化蒽醌、精蒽、咔唑、1--氨基蒽醌、精制苯绕蒽酮、代苯绕蒽酮系列等。

In this paper, a series of 4,5-dithiacrown ether annulated 1,3-dithiole-2-thiones 8a~8d were prepared via condensing 4,5-bis-1,3-dithiole-2-thione (7) with 1,ω-dimercapto polyglycol derivatives in high dilution. The obvious template effect was found during the synthesis of 8c-8d.

在高度稀释条件下,经4,5-二甲基-1,3-二硫杂环戊烯-2-硫酮(7)和多缩乙二醇的1,ω-二巯基衍生物的缩合反应,方便地合成了4,5-位带二硫杂冠醚残基的2-硫代-1,3-二硫杂环戊烯的衍生物8a~8d,中间体硫杂冠醚8c~8d的合成中有明显的&模板效应&。

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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。