脲

Dioxide quinoxaline formaldehyde semicarbazones and imines were synthesized by the reactions of 1,4-dioxide quinoxaline formaldehyde with aminourea or substituted anilines.

用1，4-二氧喹喔啉甲醛与氨基脲、苯胺、取代苯胺等反应，合成了11种1，4-二氧喹喔啉甲醛－缩氨脲和醛亚胺。

Benzyloxy benzoyldimethylsulfoxide was prepared by the reaction of ethyl 4-benzyloxybenzoate and dimethyl sulfoxide in the presence of sodium hydride, followed by Pummerer reaction with concentrated hydrochloric acid to afford eo-hydroxy-co-thio-methyl-(4/-benzyloxy) acetophenone, which reacted with urea, thiosemicarbazide, semicarbazide hydrochloride and o-phenylenediamine to give imidazolidine-2,4-dione, l,2,4-triazine-3- one and quinoxaline derivatives, respectively.

本文用4-苄氧基苯甲酸乙酯和二甲亚砜为原料，在氢化钠存在下反应，合成了(4′-苄氧基)-苯甲酰基-二甲亚砜。研究了该亚砜在浓盐酸的存在下发生的Pummerer重排反应，用重排产物ω-羟基-ω-甲硫基-(4′-苄氧基)-苯乙酮分别与尿素、氨基脲、氨基硫脲和邻苯二胺反应合成了2，4-咪唑啉-二酮、1，2，4-三嗪-3-酮、喹喔啉等含氮杂环化合物。

Via the reacher on LJ-1, we know its water solubility is good,without emulsion inclination, has temperature＆salt-resistant ability,when it used with Zinc dihydrogen phosphate, sodium sulfite and scale inhibitors, the corrosion inhibitor effectiveness can enhanced,when used with Thiourea the corrosion inhibitor effectiveness can decrease,so it can not used with thiourea.

通过对LJ-1缓蚀剂进行性能评价，发现本品水溶解性较好；无乳化倾向性；具有一定的抗温性和抗盐性；将它与磷酸二氢锌、亚硫酸钠和阻垢剂进行复配时，能提高缓蚀剂的缓蚀效果，说明它的配伍性良好，当与硫脲复配时，它的缓蚀效果有所降低，说明它与硫脲不能复配使用。

Although individuals in the UKPDS receiving sulfonylurea therapy demonstrated an early increase in B -cell function from 45% to 78% in year 1 of the study(consistent with a secretagogue effect of the sulfonylurea agent) B -cell function subsequently decreased along the same slope as the diet treated group.

虽然UKPDS中接受磺脲类治疗的个体显示，在研究的最初一年B细胞功能从45％上升到78％（磺脲类制剂的持续的促分泌作用）而在饮食治疗组随后有相同坡度的降低。

Objective: To evaluate semisolid medium one-step method for cultivation of Ureaplasma urealyticum for clinical application.

目的：探讨半固体一步培养法在临床标本上分离解脲脲原体的应用并评价其效果。

Conceal disturbing elements like iron,copper,lead with hydrogen fluoride amine-EDTA,add the potassium iodide to separate iodine, and take starch as indicator,titrate with sodium hyposulfite.

试样以王水分解、泡塑富集分离金，硫脲解脱，以硝酸-硫酸破坏硫脲，用氟化氢胺-EDTA掩蔽铁、铜、铅等干扰元素，加碘化钾使之析出碘，以淀粉为指示剂，用硫代硫酸钠进行滴定。

If the specific surface area (0.3391 m2/g) of non-modified tea extracted residual was set as 1, the specific surface area of 9 adsorbents, modified with optimized condition, will be 24.7 thiocarbamide plus phosphorylation (1, 12.2 phosphorylation (1, 6.7, 6.5 phosphorylation (2, 6.1 (sodium thiosulfate modification), 5.9 formaldehyde (1, 5.8 formaldehyde (2, 5.4, and 4.9.

设未经修饰过茶叶渣比表面积(0.3391 m2/g)之相对比值为1，其余九种化学修饰化法制备之吸附剂比表面积相对比值分别为硫脲加磷酸化修饰处理法24.7，磷酸化修饰处理法 12.2，磷酸化修饰处理法 6.7，硫脲提升纤维素架桥作用6.5，硫代硫酸钠修饰处理法6.1，甲醛修饰处理法 5.9，甲醛修饰处理法 5.8，醋酸修饰处理法5.4，柠檬酸修饰处理法4.9。

Methacryloyloxydecyl-2-thiouracil-5-carboxylate was synthesized from the reaction of thiouracil with diethyl ethoxymethylene malonate and ω-hydroxy-decyl-methacrylate.

以硫脲、乙氧基次甲基丙二酸二乙酯和甲基丙烯酸ω-羟癸酯为主要原料合成了一种新的粘接性单体10-甲基丙烯酰氧癸基－2-硫脲嘧啶－5-羧酸酯。

The decomposition of thiourea becomes serious with increasing pH value of system.

随pH值的升高，硫脲的氧化分解趋于严重，碱性介质中硫脲易于分解。

A method for determination of mercury in blood using a thiourea mixed extraction method has been ...

本文针对常规分析方法存在的不足，研究建立了硫脲混合液提取测定血样中汞的新方法，样品预处理不需要加热消解，且由于硫脲混合液与汞生成稳定化合物，可有效地减少常规预处理方法在样品预处理和测定过程中汞的吸附和挥发损失，方法的回收率高、重现性好、简便、快速、分析费用低。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。