氨合物
- 与 氨合物 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Nitrogen heterocyclics ; Oxygen heterocyclics ; Cobalt ; Ammine complexes
氮杂环化合物;氧杂环化合物;钴;氨络合物
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It is demonstrated that the chiral quaternary ammonium salts catalysts exhibit promising catalytic properties for the substrate. Part III: The synthesis and the characterizing of the macroporous aminomethyl resin-supported cinchona alkaloid complexes and the study on its catalytic properties The part consists of two subsections. the macroporous aminomethyl resin -supported cinchona alkaloid complexes were synthesized by the stuff (cinchonine, quinine and macroporous aminomethyl resin). Their structures were characterized by means of elemental analysis, XPS, TG/DTA; the chiral polymer-supported complexes were first used as catalysts for the reduction of ketones. Their catalytic properties for the reduction processes were investigated. The comparison of the products e.e., the conversion of the substrate among different reduction processes was employed with determined by HPLC. The effects of the time, the temperature, the ratio of catalyst to substrate, reaction solvent as well as the recycle times were also discussed.
第三章聚-4-氨甲基苯乙烯负载金鸡纳碱金属络合物的合成与表征及其不对称催化性能研究本章分为两节,以辛可宁和奎宁及聚-4-氨甲基苯乙烯为原料,合成了4种聚-4-氨甲基苯乙烯负载金鸡纳碱络合物催化剂,并对它们的结构用元素分析、X-射线光电子能谱、TG/DTA等几种测试手段进行了表征;首次将所合成的手性高分子负载的金属络合物用于催化芳香酮不对称还原反应,详细研究了所得的手性高分子负载的金属络合物对不同底物的催化性能,用HPLC等分析手段定量检测了还原过程的底物转化率及其产物对映异构体选择性,并考察了反应时间、反应温度、催化剂和底物投料比、反应溶剂和循环次数对催化性能的影响。
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Chiral separation of D -, L -phenylglycine by RP-HPLC was accomplished by adding a complex of optically active L -Phe-Cu2+ to the mobile phase. Chiral separation mechanism was further elucidated in light of unambiguously assigning the structure of the elutents from RP-HPLC by taking advantage of tandem mass spectrometry due to its unique capability of structural identification of the unknows.
以含 L -苯丙氨酸铜配位络合物的溶液作为手性流动相,采用反相高效液相色谱法拆分了非衍生苯甘氨酸对映体,使用质谱对拆分组分进行了结构鉴定,得到了拆分组分的化学结构,用量子化学计算预测了该结构的最稳定构象。
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Sensitive polarographic waves which relate to thiouracil, 6-mercaptopurine and homocystine(in sodium citric acid buffer solution) appeared in the presence of Cu.
高胱氨酸、6-巯基嘌呤和硫尿嘧啶均能与铜离子作用而在汞电极上产生两个吸附波。在柠檬酸钠溶液中,高胱氨酸与铜的络合物在-0.06v
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An experiment was conducted to evaluate excretive tendency of zinc in feces and urine with 8 goats groups fed with diet Ⅰ(basal diet+ 65 Zn Met) and diet Ⅱ(basal diet+ 65 ZnSO 4) respectively.
8只体重为9kg左右的健康浏阳黑公山羊,分成两组,单独关在代谢笼内,分别喂以含65Zn蛋氨酸(65ZnMet)和65Zn硫酸锌(65ZnSO4)的饲料,比较研究锌蛋氨酸螯合物的中锌在山羊粪、尿中的排泄动态。
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After treated with CuAz, the hydrogen from phenolic hydroxyl group in lignin was replaced by Cu from treated solution, being N-Cu-O complex, or two of the ammonia ligands of the tetrammine complex were replaced by copper-oxygen bonding from hydroxyl, being Cu-N-lignin complex.
在铜唑防腐剂处理后,木质素上酚羟基的H可以被Cu取代,形成&N-Cu-O&形式的络合物;或者处理液中四氨络合物中的2个氨配体被羟基取代,形成芳香族-铜络合物。
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Nanosized W-Cu powder containing 20 weight percents of Cu was prepared by a homogeneous coprecipitation process,in which Cu2WO42 / CuWO4·2H2O precipitates were first obtained by adding aqua ammonia into a liquor solution containing natrium tungstate and copper chloride and heating the solution to remove ammonia.
采用蒸氨均相共沉淀法,即加热含有Cu2+和WO42-的氨络合物溶液,使氨蒸发,获得沉淀物,然后对沉淀物进行煅烧、还原,最终制得了含Cu量为20%的W-Cu复合粉。
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Any of several esters, other than the ethyl ester, of carbamic acid .
化学术语甘氨酸铁铁的甘氨酸络合物。
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Based on the changes in the spectrum characters of guest molecules producedthrough inclusion complex formation with cyclodextrins, we have carried out two aspects of investigation:First, the mechanisms for the host-guest recognition reactions have been studied, such as the interactions between 3-CD and curcumin, the main constituent of the rhizomes of the plant Curcuma longa, the recognition of p-CD towards rubidate, the effective component of the Chinese traditional medicine madder, and the reactions of p-CD towards the antileprotic drug dapsone and the antiinflammatory drug nabumetone: The formation of supramolecular complex between P-CD and guest molecule has been discussed and verified in virtue of multitudinous means such asultraviolet-visible absorption, fluorescence emission, infrared spectrogram and so on. The influence of addition of linear alcohols on the supramolecular system has been studied and the reason why the noncovalent interactions in the three-component system could result in a decrease in the apparent association constant of the inclusion complex has been revealed.
本论文基于环糊精对被包结客体光谱性质的改变,开展了两大方面的研究:β-环糊精对姜黄属植物根茎主要成分—姜黄素、中药茜草有效成分—茜草双酯、抗麻风药物氨苯砜及抗炎药物萘丁美酮的主-客体识别反应机制研究:借助超分子包合物的紫外吸收光谱、荧光光谱或红外吸收光谱等手段,通过多种方法探讨并验证了超分子包合物的形成;研究了直链醇的加入对超分子体系的影响,揭示了三元体系中非共价相互作用导致超分子包合物表观结合常数降低的原因:对超分子包结反应进行了热动力学研究,探讨了各热动力学参数的变化趋势并从熵焓互补的角度考察了超分子包结过程;通过荧光猝灭实验进一步揭示了水相中β-环糊精增敏客体荧光的本质原因,从而为超分子化学提供新的理论和研究方法。
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Linear free energy relationships exist between the stability of the ternary mixed ligand complex compounds and the base strengths of the a-amino acids and with the stability of the parent binary complex compounds as well.
此处应用的α-氨基酸为L-脯氨酸, D,L-α-氨基异丁酸, L-异亮氨酸, L-缬氨酸,甘氨酸、L-丝氨酸、L-苏氨酸,结果发现,三元混配合物的稳定性与α-氨基酸的碱性强度间以及与原来的二元络合物间存在有线性自由能关系。
- 推荐网络例句
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But we don't care about Battlegrounds.
但我们并不在乎沙场中的显露。
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Ah! don't mention it, the butcher's shop is a horror.
啊!不用提了。提到肉,真是糟透了。
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Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.
Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。