硫脲

In this thesis, the advantages and disadvantages of potentiodynamic polarization curve, electrochemical impedance spectroscope and coulostatic method for studying corrosion inhibitors in acidic mediums were compared. And then the effect of three popular acid corrosion inhibitors such as thiourea, dodecylamine and propargyl alcohol on the corrosion inhibition behaviors of Q235 steel in acidic solutions were investigated by these techniques. The anodic desorption behavior and extreme value phenomenon of concentration were surveyed thoroughly as well.

本文讨论了动电位极化曲线、电化学阻抗谱和恒电量测量方法在酸性介质缓蚀剂研究中的优势和不足，在此基础上，研究了硫脲、十二胺和丙炔醇等三种常见酸性介质缓蚀剂对Q235钢在酸性溶液中的缓蚀行为和机理，并深入探讨了缓蚀剂的阳极脱附和浓度极值现象。

The electrochemical results of Q235 steel clearly showed that, dodecylamine restrain corrosion mainly by geometric blocking effect; Thiourea decreased the cathodic current effectively and propargyl alcohol suppressed the anodic reaction instead. Inhibition behaviors of PA at different concentrations were investigated as well.

Q235钢在酸性介质缓蚀剂中的电化学结果表明，十二胺以覆盖效应为主，硫脲则主要抑制Q235钢的阴极过程，而丙炔醇属于以抑制阳极反应为主的缓蚀剂。

Chapter III We try to synthesizing pyrazole by hydrazine and thiourea in alkaline conditions, we found we can not get the acyl pyrazole in the conditions of synthesizing succinylthydrazine and ferrocenyl chalcone, pyrazole was got instead.

第三章我们尝试以酰肼及氨基硫脲作为氮源在碱性条件下来合成吡唑类化合物，并取得了理想的结果。

A new photochromic organic compound of thiosemicarbazone, 4-( p -bromo-α-methylaminothiocarbonyl hydrazonobenzal)-2,5-dihydro-3-methyl-5-oxo-1-phenyl pyrazole, was synthesized and characterized by elemental analyses, IR, 1H NMR spectra, and X-ray single-crystal diffraction analysis.

文章合成了一个新的有机化合物1-苯基-3-甲基-4-对溴苯亚甲基-吡唑啉酮-5 缩甲基氨基硫脲(1)，并分别用元素分析、红外光谱、氢核磁共振及X-射线单晶衍射对化合物的结构进行了确证和表征。

Studies on the Synthesis, Crystal Structures and Photochemical Photochemical Properties of Pyrazolone Thiosemicarbazones

论文标题：吡唑啉酮缩氨基硫脲类化合物的合成，晶体结构及光化学性质研究

Two novel pyrazolone derivatives 2-ethylamino-6H-5-(1-phenyl-3-methyl/phenyl-5-pyrazolone-4-ylene)-1,3,4-thiadiazine (PMCP-ETSC/DPCP-ETSC) containing NNS six-membered heterocycles were synthesized by the condensation reaction of 1-phenyl-3-methyl/phenyl-4-chloroacetyl-pyrazolone-5 with 4-ethyithiosemicarbazide. The title compounds were characterized by elemental analysis, IR, 1H NMR, 13C NMR and single-crystal X-ray diffraction.

利用1-苯基－3-甲基／苯基－4-氯乙酰基－吡唑啉酮－5与4-乙基氨基硫脲发生缩合反应，生成了2个新的双杂环化合物2-乙氨基－6H-5-（1-苯基－3-甲基／苯基－5-吡唑啉酮－4-基）－1，3，4-噻二嗪(PMCP-ETSC/DPCP-ETSC)，并对其进行元素分析、红外光谱、核磁共振表征和晶体结构分析。

The literature about the synthesis of the ion exchange and chelating adsorbents used in the off-line separation and preconcentration of the noble metals and the development of the on-line microcolumn separation and preconcentration of the noble metals were reviewed. Four silica gel-based adsorbents with rhodanine, 2-mercaptopyrimidine, 2-mercaptothiazoline and isophenylthiourea as the functional groups were first synthesized and applied to the on-line separation and preconcentration of silver, gold, palladium and platinum for their FAAS determination.

本论文在回顾螯合吸附材料的合成及其在贵金属的离线和流动注射在线预浓集分离发展状况的基础上，首次合成了含罗丹宁、2-巯基嘧啶、2-巯基噻唑啉和异二苯基硫脲等四种以硅胶为载体的螯合吸附剂，并用于银、金、钯和铂的流动注射微填充柱在线预浓集分离、火焰原子吸收光谱分析。

The mixture is the strongest of the three solutions.erosion mechanism of ATMP and sulfocarbamide is initially studied and also the reason why the ...

本文对 ATMP、硫脲的缓蚀机理进行了初步探讨，同时初步分析了二者复配后缓蚀性能增强的原因。

Etched foil capacitance increase when sulfocarbamide(0.3%by weight) and calgon(0.2%by weight) added.

加入硫脲和六偏磷酸钠可提高铝箔的初始比容。

The results showed that sulfourea and cetylpyridinium bromide respectively had an inhibitive effect on corrosion of 16Mn steel under thin electrolyte film with H_2S.

结果表明，硫脲和溴化十六烷基吡啶分别都表现出一定的缓蚀效果，复配后具有缓蚀协同效应，存在一个最佳缓蚀浓度极值和一个最佳缓蚀浓度比。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。