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Iodine was found to be an efficient catalyst for the imino Diels-Alder reaction of N -arylimine with enol ethers to provide tetrahydroquinolines in good yields.

发现碘能够有效地催化N-芳基亚胺和烯醇醚之间的亚胺Diels-Alder反应,以较高的产率得到四氢喹啉衍生物。

Technical characteristics and existing problems of cyanide-free silver plating technology were summarized through the analysis of cyanide-free silver plating systems of thiosulfate,succinimide,iodide,hydantoin,sulfite and others.

通过对硫代硫酸盐、丁二酰亚胺、碘化物、乙内酰脲、亚硫酸盐以及其它无氰镀银体系的分析,总结了当前无氰镀银工艺的技术特点及存在的问题,并阐述了无氰镀银技术的发展历程和研究现状。

Granularity, methylene blue decolorization rate, iodine value according to customer's requirements.

粒度,亚甲蓝脱色率,碘值可根据客户的要求生产。

The low conductivity of the LiI solid electrolyte limits the current producing capability to the microampere range, but is sufficient to power the heart pacers.

因而碘化锂电池无法提供这么大的电流了,于是,锂二氯亚砜体系被发展成为植入式电源。

The method is based on the oxidation-reduction reaction between potassium iodide and nitrite.

建立了碘化钾与亚硝酸根氧化还原反应生成游离碘使异硫氰酸荧光素荧光猝灭测定痕量亚硝酸根的新方法。

Objective To investigate the validity of psychomotor function handicap to diagnose the sub-cretin in different periods of iodine supplementation.

目的 探讨在碘营养变化过程中精神运动功能障碍对亚克汀病诊断的有效性。

Objective:To assess the value of nuclear med ical examination in early diagnosis of subacute thyroiditis.

目的:探讨甲状腺吸131碘率检查对亚急性甲状腺炎的早期诊断价值。

Part 3 : determination of chromate, iodide, sulfite, thiocyanate and thiosulfate.

第3部分:铬酸盐、碘化物、亚硫酸盐、硫氰酸盐和硫代硫酸酯的测定

Objective To confirm the normal value of the adult 's thyroidal rate of iodineuptake after universal iodine salt in JiaoZuo.

甲状腺吸碘率在甲状腺疾病如亚急性甲状腺炎、自身免疫性甲状腺炎、格雷氏甲亢、单纯性甲状腺肿等疾病的诊断和鉴别诊断中有很大价值。

The coupling reaction of aryl iodides, bromides and chlorides with differentolefins catalyzed by catalyst 2 and 4 was studied. It was found that compounds 2 and 4 anchored on active carbon are efficient catalyst for the Heck reaction in the case of aryl bromides and aryl chlorides as substrates (Scheme 3). It is notable that catalyst 4 has higher efficiency for aryl chlorides.___^H Cat.2 or 4, Base HXSolution, 100C or 140

以化合物2和4为代表,重点研究了活性炭负载的二茂铁亚胺环钯化合物催化碘代苯、溴代苯和氯代苯与活泼烯烃之间的偶联反应(Scheme 3),发现活性炭负载的二茂铁亚胺环钯化合物2和4均可用于催化多种溴代和氯

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。