查询词典 iodine

Tetrachloroterephthalic acid was prepared by chlorinating terephthalic acid, oleumsolvent and iodine catalyst. Tetrachloroterephthalic acid was acylated by sulphurous oxychloride in the presence of DMF to form tetrachloroterephthaloyl chloride. The acyl chloride product was fluorinated by potassium fluoride and esterified by methanol to synthesize dimethyl tetrafluoroterephthalate. The ester was reduced with potassium borohydride and lithium chloride to give tetrafluoroterephthalyl alcohol. The above product was bromated in the hydrobromic acid to obtain 4-bromomethyl-2,3,5,6-tetrafluoro-benzene methanol. 4-Methyl-2,3,5,-6-tetrafluorobenzene ethanol was obtained by reducing the bromide with magnesium. In the exist of DCC and DMAP, tefluthrin was got by the condensation reaction between 4-methyl-2,3,5,6-tetrafluoro-benzene methanol and-(1RS,3RS)- 3-(2- chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cycolpropanecar-boxylate acid.

对苯二甲酸与氯气在碘存在下以发烟硫酸为溶剂进行氯化制备四氯对苯二甲酸；再以DMF为催化剂与二氯亚砜反应生成四氯对苯二甲酰氯；以氟化钾为氟化剂，环丁砜为溶剂置换氟化，再与甲醇酯化得到四氟对苯二甲酸甲酯；以KBH4-LiCl为还原剂二甲醚为溶剂反应制得四氟对苯二甲基苄醇；以氯苯为溶剂在溴化氢溶液中溴化得到溴化产物；在乙醇溶液中经镁粉还原得到4-甲基-2，3，5，6-四氟苄醇；甲基苄醇与功夫酸在催化剂二环己基碳二亚胺和4-二甲氨基吡啶作用下缩合得到七氟菊酯，总收率达43.6%。

Patients with free thyroxine and suppressed serum thyrotropin could have Graves' disease, painless thyroiditis, painful subacute thyroiditis, toxic multinodular goiter, solitary hyperfunctioning nodule, or iodine-induced hyperthyroidism.

同时具有正常的甲状腺素水平和降低的促甲状腺素水平的病人可能患有Graves'病，无痛性甲状腺炎，痛性亚急性甲状腺炎，多结节性甲状腺肿伴甲亢，单发性高功能结节或者碘甲亢。

In addition, ioding was found to be an efficient catalyst for the imino Diels-Alder reaction of N-arylimine and enol ethers and the reaction provided tertrahydroqinolines in good yields. One pot synthesis of tetrahydroqinolines from aldehyde, aniline and enol ethers was also achieved using iodine as the catalyst. The chemical yield of the"one pot"reaction was comparable with that obtained using preformed N-arylimine.

此外我们也发现碘能够有效地催化N-芳基亚胺与烯醇醚的Diels-Alder反应，以很高的化学收率得到了四氢喹啉衍生物，并且发现碘也能够直接催化芳香醛、苯胺、烯醇醚的三组分&一锅&反应，获得的化学产率与使用预制的N-芳基亚胺相当。

Objective To research the effects of iodine excess on serum lipid of rats with experiment autoimmune thyroiditis and the interventive effect of different concentrations of selenium.

目的探讨碘过量对实验性自身免疫性甲状腺炎(Experiment autoimmune thyroiditis，EAT)大鼠血脂的影响及不同硒水平的干预作用。

The only that more important a bit salt adds iodine is the harm that eliminates iodic lack to be caused to the mankind is effective method.

更重要的一点食盐加碘是消除碘缺乏给人类造成的危害的惟一有效手段。

It is found that in the medium of H3PO4,the fading reaction of Methyl violet is quickened by IO3-with the presence of micro iodine. The fading of methyl violet is found to be directly proportional to the amount of iodinate,and linear range is 0～2 μg/ml.

在磷酸介质中，微量碘离子与碘酸钾氧化反应能催化甲基紫褪色，而且褪色程度与碘离子的量有关，最大吸收波长在575nm，在0～2μg/ml范围内呈线性关系。

Through analyzing and researching the traditional production process of potassium iodate,benefit is created and the safety factor is increased for the enterprises by utilizing reasonable technical renovation to successfully reduce the consumption of iodine and increase the recovery rate of potassium iodinate.

通过对传统碘酸钾生产工艺的分析、研究，利用合理的技术改进，成功降低碘耗，提高碘酸钾收率，且安全系数提高，为企业创造了效益。

The iodine nutrition status among populations of Shanwei was significantly improved after salt iodination was implemented in 1996, and the stage goal for IDD elimination by the year 2000 was achieved.

自1996年实施全民供应碘盐以来，汕尾市人群碘营养状况得到明显改善，并於2000年达到实现消除碘缺乏病的阶段目标。

The iodination of fluorinated ylide-anions using element iodine or 1,2-diiodoethane wassuccessfully underwent and a series of of perfluoroalkylated α-iodo-α,β-unbsaturated nitriles were prepared.

成功地进行了含氟叶立德阴离子的碘化反应，通过用不同的碘化试剂即单质碘或〓， 2-二碘乙烷制备了一系列全氟烷基化的α—碘代—α，β-不饱和腈。

Methods HAb18Fab was prepared by papain digesting HAb18, and it was radioiodinated with iodine-131 using high efficiency iodination method. The experiment consisted of two parts: ten nud mice bearing human hepatocellular carcinoma xenograft were injected intravenously with 131Ⅰ-HAb18Fab 3 700kBq/mouse, and six patients with hepatocellular carcinoma were injected intravenously with 131Ⅰ-HAb18Fab 111-166.5 mBq/body.

以木瓜蛋白酶切割肝癌单克隆抗体HAb18制备HAb18 Fab，应用高效碘标记法将131Ⅰ标记于HAb18 Fab，再以131Ⅰ-HAb18 Fab偶合物进行荷肝癌裸鼠及肝癌病人体内放射免疫显像。

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。