查询词典 thiourea

METHODS: The bile was treated with 3 different methods, including the 2D-Clean-up kit group: the bile sample was dissolved with lysis buffer (contains: 7 mol/L carbamide, 2 mol/L thiourea, ammonium persulfate with mass concentration of 0.4 g/L, 65 mmol/L dithiothreitol, carrier ampholytes with mass concentration of 0.2 g/L).

将标本分别按3种不同方法进行处理：①2D-Clean-up试剂盒处理胆汁标本：用裂解液，7 mol/L尿素，2 mol/L硫脲，质量浓度为0.4 g/L的过硫酸铵，65 mmol/L二硫苏糖醇，质量浓度为0.2 g/L的载体两性电解质溶解沉淀过夜。

Determination of Ethylene Thiourea in Water using Gas Chromatography with a Nirogen-Phosphorus Detector.

测定乙烯硫脲在水分利用气相色谱法，以Nirogen磷探测器。

No.1: Iron oxide pigment ,Organic/ Inorganic pigments , Milori Blue, Silica Flatting agent, Pearl Pigment, Fluorescent Pigment ,Ceramic Pigments, luminous pigment , Dyestuff, Phosphorous acid ,Zirconium series ,Fluorescent Brightening Agent ,Thiourea Dioxide ,Intermediate, Other Chemical products.

化工出口部：氧化铁颜料、有机颜料、无机颜料、消光粉、珠光颜料、萤光颜料、陶瓷颜料、夜光颜料、染料、亚磷酸、锆产品系列、荧光增白剂、二氧化硫脲、中间体、其他化工类产品。

The replacement of toxic and volatile organic solvents as reaction media or an efficient catalyst with environmentally acceptable alternatives are an area of tremendous importance in modern organic synthesis. Basing the review about solid-phase synthesis with simple separation, the liquid phase organic synthesis supported by the solution polyethylene glycol and the chemical reactions in the medium of PEG, herein we are going to study the synthesis of 1-amidoalkyl-2 -naphthols in presence of the solution catalyst or the solid catalyst and the synthesis of thiourea in PEG-400 medium.

难溶性载体试剂参与下的固相合成使分离操作简单易行；可溶性聚乙二醇支载下的液相合成显示出液相反应的稳定高效性，同时兼顾大分子聚合物容易沉降分离的优点；无毒且稳定的小分子PEG作为反应介质，往往表现出醚和醇的双重性质和功能。

In this bath, maleic acid was an inhibitor, when its concentration was kept at 20 mg/L, the deposition rate could reduce to 6.17μm/h, the content of nickel decreased to 1.74% and the resistivity was 7.51μΩ·cm; Potassium ferrocyanide inhibited deposition of copper, when its content was 0.5 ppm, the deposition rate decrease to 3.38μm/h, the content of nickel was 2.03%, the resistivity can reduced to 5.41μΩ·cm, the copper deposits also had higher (111) plane orientation. Thiourea was also an inhibitor in this system, when its concentration was kept at 0.8 ppm, the deposition rate was 4.72μm/h, the content of nickel in the film was 1.20%, the resistivity can reduced to 5.46μΩ·cm, at the same time, the deposition at (111) plane orientation become more favorable.

结果表明，马来酸在该体系中是抑制剂，当其浓度为20 mg/L时，镀速降为6.17μm/h，镀层镍含量降为1.74%，表面电阻率降为7.51μΩ·cm，铜层颗粒细小均匀，更有利于在(111)面上的结晶；亚铁氰化钾的加进可以明显降低镀，当其浓度为0.5 ppm时，镀速为3.38μm/h，镀层镍含量降为2.03%，表面电阻率降为5.41μΩ·cm，铜层颗粒细小均匀，(111)晶面衍射峰增强；硫脲在体系中也显示为抑制剂，当其浓度为0.8 ppm时，镀速降到4.72μm/h，镀层镍含量为1.20%，表面电阻率降为5.46μΩ·cm，形成的铜颗粒很小，同时(111)晶面衍射峰增强，有利于铜在(111)面上结晶。

In a design of square,regressive and orthogonal rotation with five factors,a field trial was conducted using Toona sinensis.This sdudy was undertaken to investigate the effects of gibberellic acid(GA3), 6-benzy laminopurine, thiourea C.P.(NH2 2CS, Zinc Sulphate(ZnSO4), sa!tpeter(KNO3) for stratification on the dormancy-breaking of Toona sinensis,and to explore a more effective dormancy-breaking method and its mechanism.

本研究以一、二年生的无性繁殖红香椿苗为材料，采用五因素二次正交旋转组合设计，综合定量地研究6—BA、GA_3、硫脲、ZnSO_4、KNO_3五种化学药剂及其组合对香椿休眠解除的影响及其机理进行研究，并探讨更为有效的打破香椿休眠的方法。

After dissolution, the Cr in samples was oxidized to Cr with KMnO4.Fe(superscript 3+) and Cu(superscript 2+) were masked with NH4HF2 and thiourea, respectively. In acid solution at pH 3.0-4.0, the I2 generated from the reaction of Cr and KI could form high-sensitivity blue complex with starch. The absorbance was measured spectrophotometrically at 590 nm.

样品溶解后，用KMnO4将Cr氧化为Cr，以NH4HF2掩蔽Fe(上标 3+)、硫脲掩蔽Cu(上标 2+)后，在pH3.0~4.0的酸性溶液中，Cr与KI作用后生成的I2遇到淀粉后形成灵敏度很高的蓝色络合物，此络合物最大吸收波长为590nm。

Indoor air sources of formaldehyde are mainly in the following aspects : 1, the plywood used for interior decoration, Ximugongban, medium density fibreboard and shaving board, and other artificial plate because formaldehyde has strong sexual bond, has strengthened plate and the hardness control, corrosion functions, Therefore, the current production of imitation board use Jiaonianji merits to formaldehyde as the main ingredients thiourea aldehyde resins, plate, residual and did not participate in the response formaldehyde will gradually release of the surrounding environment is a indoor air formaldehyde main ;2, using imitation board manufacturing furniture, some manufacturers in the pursuit of profit, the use of unqualified plate. In preliminary front face material reuse inferior glue, the manufacturing processes are not standardized, as a result of customers buying home, to buy a small emission points ;3, containing formaldehyde content and may distribute to the outside other categories decorative materials, such as stickers Qiangbu, with wallpapers, chemical fiber carpet, foam, paint and paint, etc.;4, combustion, emit formaldehyde certain materials, such as cigarettes and some organic materials.

室内空气中的甲醛来源主要有以下几个方面：1、用作室内装饰的胶合板、细木工板、中密度纤维板和刨花板等人造板材，因为甲醛具有较强的粘合性，还具有加强板材的硬度及防虫、防腐的功能，所以目前生产人造板使用的胶粘剂是非曲直以甲醛为主要成分的脲醛树脂，板材中残留的和未参与反应的甲醛会逐渐向周围环境释放，是形成室内空气中甲醛的主体；2、用人造板制造的家具，一些厂家为了追求利润，使用不合格的板材，在粘接贴面材料时再使用劣质胶水，制造工艺不规范，结果顾客买回家去，等于买回了一个小型废气排放站；3、含有甲醛成分并有可能向外界散发的其他各类装饰材料，比如贴墙布，贴墙纸，化纤地毯、泡沫塑料、油漆和涂料等；4、燃烧后会散发甲醛的某些材料，比如香烟及一些有机材料。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。