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碘化

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In this research,the indexes relating to the quality of the fried oil,including the content of the ploymers,acid value,iodine value,saponification value,peroxide value,the content of the diglyceride,oxidation stability,viscosity,were detected.The results showed that with the frying time prolonging,the content of the polymers and viscosity increased greatly,iodine value and saponification value decreased,peroxide value and acid value increased,and the content of unsaturated fatty acid reduced,a little of diglyceride produced.

在食用油煎炸过程中,对油脂品质相关的指标(包括酸值、碘值、皂化值、过氧化值、脂肪酸组成、氧化稳定性、黏度、聚合物的含量以及甘一酯、甘二酯和甘三酯的含量)进行检测,结果表明,随着煎炸时间的延长,煎炸油中的聚合物含量大大升高,黏度增大,有少量甘二酯生成,不饱和脂肪酸含量下降,碘值、皂化值降低,酸值、过氧化值升高。

PH of filtrate is kept below 0.65 in order to avoid the reaction between sodium formate and iodine bromide. Then iodine bromide halogenation method is used to determine quantitatively the content of the third monomer, i.

控制滤液pH在0.65以下,以防止甲酸钠和溴化碘起反应,然后用溴化碘卤化法定量测定滤液中的第三单体甲基丙烯磺酸钠的含量。

By using technology of orientation object program design and parameter design thought,the design for semi-automatic iodixed salt machine was realized, and the parameter graphics stock for semi-automatic iodized salt machine was set up.

运用面向对象的程序设计技术和参数化设计思想,实现了半自动加碘机的参数化设计,并建立了半自动加碘机的参数化图形库

In part one, the reactions of some active fluorine-containing compounds such as 2, 2-dihydropolyfluoroalkanoic acids and ethyl 2-hydropolyfluoroalkenoates were studied and various fluorine-containing heterocyclic compounds were synthesized. Using 2, 2-dihydropolyfluoroalkanoic acids as the starting material, 4-fluoroalkyl quinolin-2-ols, 2- [ -1-hydropolyfluoro-1-alkenyl] -4H-3, 1-benzoxazin-4-ones, 1-aryl -4, 9-dihydro-3-fluoro-alkyl-1H-pyrazo [3, 4-b] quinolin-4-ones, 5-fluoroalkyl-12H-quin olino [2, 1-b] quinazolin-12-ones, 4-fluoroalkyl-1, 3-dihydro-1, 5-benzodiazepin-2-ones and 4-fluoroalkyl-2H-pyrido [1, 2-a] pyrimidin-2-ones were synthesized through its condensation reaction with anilines, anthranilic acid, N'-aryl-o-aminobenzamides, o-nitro aniline, o-amino pyridine and their derivatives and the subsequent transformations. 5-Fluoroalkyl isoxazolidines, 3-fluoro-3-fluoroalkylisoxazolidino [4, 3-c] quinolin-4-ones, 3-fluoroalkylisoxazolino [4, 3-c] quinolin-4-ones and 2-aryl-3per fluoroacylindoles were synthesized by inter-and intramolecular 1, 3-dipolar cycloaddition of fluorine-containing olefins and nitrones.

第二部分,我们研究了α,α-二氟苄基卤类化合物的亚磺化脱卤反应、产物的转化及全氟烷基亚磺酸盐与芳环化合物的全氟烷基化反应,发现全氟苄基碘或溴及α,α一二氟苄基溴在保险粉等亚磺化脱卤试剂引发下可生成相应的亚磺酸盐;全氟苄基亚磺酸盐与氯气或溴反应可生成全氟苄基磺酰氯或磺酰溴;在烯烃存在下,全氟苄基碘则与烯烃发生加成反应,生成相应的1:1加成产物;在三价醋酸锰的作用下,部分芳香化合物如茴香醚,二甲氧基苯,吡啶,喹啉等可以和过量的全氟烷基亚磺酸盐发生双全氟烷基化反应,反应表现出一定的区域选择性,产率良好。

Although the ion-exchange capacity of membrane quaternized by methyl iodide is higher than that of membrane quaternized by methylene diiodide,mechanical properties of the former are too poor to form membranes.

以一碘甲烷为季铵化试剂制备的离子交换膜其离子交换当量要比以二碘甲烷为季铵化试剂的要高,但机械强度差。在相同条件下,提高反应温度,有利于膜的季铵化反应,而不利于膜的磺化反应。

It suggested that supervising the occurrence of hyperthyroidism should be carried out when supplying iodine to all population in iodine deficiency area.So that we could scientifically control IDD.Conclusion:1. At present,higher and lower intake of iodine all existed among the patients with thyrocele and hyperthyroidism in ChongQing.

在轻度缺碘地区实施全民补碘措施时,应对甲状腺自身免疫异常的人群应进行甲亢病情监测及随防,同时对加碘食盐的使用实行个体化,以便更科学地防治碘缺乏病,并把补碘的副作用降到最低水平。

Beijing Xuguang Tatsu Crystal Technology Development Limited belonging to the Beijing Municipal concentric diamond products power plant (hereinafter referred to concentric force), Xuguang reached an independently operated once in 2002 and production of raw materials CsI crystal processing.

北京旭光达晶体科技发展有限公司隶属于北京市同心力金刚石制品厂,旭光达成立于2002年曾经独立经营和生产碘化铯晶体的原料加工。

The SmI2-mediated reductions of ketones,imines and α,β-unsaturated esters have been shown to be instantaneous in the presence of H2O,an amine and in THF.

在水、胺以及四氢呋喃存在下二碘化钐参与的还原酮、亚胺以及α,β不饱和酯的反应能够在瞬间完成。

The results showed: when TLC solvent system was: chloroform - methanol - diethyl amine = 90:9:1, alkaloids from lotus leaves were well isolated, and five components were isolated and identified by spraying Dragendorff reagent. The optimal conditions of HPLC solvent system were: methanol- water - diethyl amine = 75:25:0.0125. Under the conditions, components of alkaloids from lotus leaves were separated very well, and ideal RP-HPLC peaks were obtained.5、Methods of High Speed Counter Current Chromatography and preparative High Performance Liquid Chromatography applied to identify and purify alkaloids from lotus leaves were set up. When solvent system of HSCCC was: chloroform - methanol - water (pH=4.00)= 4:3:2, speed of chromatogram was 700rpm, flow speed of the mobile phase was 2mL/min, four pure components relatively were attained by isolation and purification.

结果表明:薄层层析溶剂系统为氯仿:甲醇:二乙胺=90:9:1,使荷叶中的生物碱达到了较好的分离效果,并用改良的碘化铋钾试剂喷雾显色,共分离鉴别出了5种荷叶生物碱;分析型HPLC分析检测的较优溶剂系统为甲醇:水:二乙胺=75:25:0.0125,使荷叶生物碱的各个组分达到了基线分离,并获得了较好的峰形。5、建立了高速逆流色谱和制备型HPLC技术分离纯化荷叶生物碱的具体方法。H(来源:ABC46论文网www.abclunwen.com)SCCC法在溶剂系统为氯仿:甲醇:pH4.00的水=4:3:2,色谱仪转速为700rpm,流动相流速为2mL/min的条件下,分离纯化得到了4个纯度较高的化合物。

Copper iodide CuI has a apparent inhibition effect on addition rearrange of the Grignard reagent with carbonyl compounds.

为抑制烯丙基格氏试剂与羰基化合物加成反应中的重排反应,进行了碘化亚铜CuI对此类格氏试剂及加成产物组分比例关系的研究,CuI对这类化合物加成反应重排有明显的抑制作用。

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