水解常数
- 网络Hydrolysis constant
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用其质子传递反应的自由能变,计算了水解常数和水解度。
Their hydrolysis constant and degree of hydrolysis are calculated by free energy change of proton transfer reaction .
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金属离子水解常数pK1的人工神经网络研究
Study on Hydrolysis Constants pK_1 of Metal Ions by using Artificial Neural Network
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对金属离子水解常数pK1的线性模型的局限性进行了讨论,并采用投影寻踪技术对pK1数据结构进行研究。
Projection Pursuit ( PP ) was employed in studying the relationships between structural parameters of metal ions and their hydrolysis rule .
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所有粒子的水解常数均得到了良好的拟合。
Hydrolysis constants of all species were obtained with good fitting .
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这与单一重金属元素的结果有差异(单一重金属与铵态氮共存时,吸附能力的顺序为Zn2+Cu2+Cd2+NH4+),引起这种差异的原因可能与金属元素的离子半径和水解常数等性质有关。
This result is different with single heavy metal , which maybe caused by differences of the ionic radius of metal element and the hydrolysis constants .
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HPLC法测定模拟乙烯砜型染料-纤维化合物的碱性水解速度常数
Determination of Rate Contants of Alkaline Hydrolysis for Model Vinyl Sulfone Dye-Cellulose Compounds by HPLC
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同时,DDS在双前驱体中比单前驱体中的水解速率常数有很大程度的减少。
Meanwhile , the hydrolysis rate constant of DDS in mixed system was smaller than the rate constant of DDS in the single DDS system .
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得到以下结论:随着温度的升高,水解速率常数也随之增加.根据阿伦尼乌斯方程,求得了水解反应的活化能Ea为9.45kJ/mol、指前因子A为2.30。
The results were obtained as follows : with the rising of temperature , hydrolysis rate constants have been increased , and the hydrolysis reaction activation energy E_ ( a ) was 9.45 kJ / mol and A was 2.30 for the Arrhenius equation .
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本论文运用毛细管电泳电化学检测法(CE-ED),对一些天然药物中的药效成分的物理化学常数进行测定。这些物理化学常数包括水解速率常数、结合常数和电离常数。
In this thesis , some basic physicochemical constants including hydrolysis rate constant , binding constant and ionization constant of ingredients in crude drug were studied with capillary electrophoresis-electrochemical detection ( CE-ED ) .
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测定了恶唑烷类前药的水解速度常数。
The hydrolysis rate constants of oxazolidine pro & drugs were determined .
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本文测定了五种不同结构的模拟乙烯砜染料-纤维化合物的碱性水解速度常数。
Rate constants of alkaline hydrolysis for 5 dye-cellulose compounds have been determined .
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温度升高,水解速率常数呈指数函数关系递增。
The hydrolysis rate constant increases at a exponential function with temperature increase .
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人工神经网络预测含硫芳香族化合物的水解速率常数
Forecast the hydrolysis speed constant of aromatic sulfur - containing compounds by ANN
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有机磷化合物的研究ⅩⅩⅢ.烷基膦酸二烷基酯的取代基结构参数与其水解速率常数的相关分析
Studies on Organophosphorus Compounds XXIII . The Correlation Analysis of Hydrolysis Rates of Dialkyl Alkylphosphonates with Structure Parameters
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有机污染物水解速度常数与腐殖质浓度定量关系的建立及验证
Establishment and Verification of Quantitative Relationship Between Rate Constants for Hydrolysis of Organic Pollutants and Concentrations of Humic Substances
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离子强度对盐类水解浓度平衡常数的影响
Effect of ionic strength on saline hydrolysis concentration equilibrium constant
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乳糖和麦芽糖水解反应速率常数的毛细管电泳测定方法
Determination of Reaction Rate Constant of Lactose and Maltose Hydrolysis by Capillary Electrophoresis with Electrochemical Detection
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旋光度法测定蔗糖水解反应速度常数是动力学的一个典型的实验。
In chemical kinetics , the measurement of velocity constant of sucrose hydrolysis by polarimetry is a typical experiment .
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在硫酸铁水合物催化下,分别测定了七种取代乙醛缩二乙醇在不同温度下的水解反应速率常数;
The rate constants , of hydrolysis of 7 diethylacetals under the catalysis of ferric sulfate hydrate were determined at different temperatures .
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用高分辨率、高灵敏度的毛细管电泳安培检测法对芦丁水解的速率常数进行了研究,建立了芦丁及其水解产物槲皮素的定量分析方法。
The concentration of rutin and its hydrolysis products were directly minitored by capillary electrophoresis-amperometric detection due to its high resolution and high sensitivity of detection .
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本文讨论了离子强度对盐类水解浓度平衡常数影响,指出在一定温度下,离子强度的增大,对一元弱酸强碱盐和强酸弱碱盐的水解浓度平衡常数趋向无影响;
This paper discusses the effect of ionic strength on saline hydrolysis concentration eguilibrium constant , on a certain temperature conditions , a rise in ionic strength has no effect on weakly alkaline salt and weakly acidic salt hydrolysis concentration equilibrium constant ;
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采用酸碱滴定法测定了甘油三乙酯酸性水解的总速率常数k。
Total rate constants k of acidity hydrolysis of glycerol triacetate were determined by acid alkali titration .
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实验发现,N2O4一次不可逆水解的吸收速率常数H(KD)~(1/2)在25℃时为0.136m/s。这一数值远大于研究人员过去观察到的数值。
The absorption rate constant H KD ~ ( 1 / 2 ) for first order irreversible hydrolysis of N_2O_4 was found to be 0.136 m / s at 25 ℃ which is significantly larger than values observed by previous researchers .
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在最佳电泳条件下,测定了秦皮甲素在五个不同温度下水解反应的速率常数,并计算了该反应的活化能。
Under the optimum conditions , the hydrolysis rate constants of aesculin hydrolysis at five different reaction temperatures were obtained respectively .
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本文对2-甲基-2,5-二甲氧基-2,5-二氢呋喃的水解平衡进行了初步研究,测定了水解平衡常数,为选择合适的水解反应条件,提高平衡转化率提供了理论依据。
The preliminary study of the hydrolytic equilibrium of 2-methyl-2,5-dimethoxy-2,5-dihydrofuran was reported in this paper . The hydrolytic equilibrium constant was determined . The study has been provided theoretical basis for selection of suitable hydrolytic reaction conditions and for raising equilibrium conversion per pass .
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从实验数据求出了稻壳水解及单糖分解的活化能,同时找出了水解速率常数与催化剂浓度的关系。
Activation energies for hydrolysis of rice husk and decomposition of monose have been calculated from experimental data . and relationship between rate constant and catalyst concentration has been established .
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使用强酸阳离子交换树脂(H+)在搅拌反应器中催化蔗糖溶液水解,分析了糖液浓度变化对蔗糖水解级数偏离一级反应和综合水解反应常数的影响。
This paper uses the strong acid cation resin to catalyse the hydrolysis of high-concentration sucrose solution in the stirring reactor , and analyses the effects of the solution concentration on the reaction constant as well as its departure from the first-order reaction .
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并研究了414的水解性能,结果表明,PH值的减小、温度的升高都使414的水解速率常数增大,并计算出不同PH值下的活化能和热力学常数。
The consequence showed that hydrolytic rate constent ascends with the PH value reduced and temperature raised .
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本文发展一个处理含一易水解金属离子和一配体的体系,由其一组电位滴定数据而同时获得其稳定常数、水解常数和聚合常数的简单方法。
A simple method is developed for the treatment of potentiometric titration data of a system containing a hydrolyzable metal ion and a ligand .
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根据盐类水解关系式和水的离子积计算公式,建立了计算盐类水解度和水解产物离解常数的完全方程式。
The full equation for the degree of hydrolysis of salts and the dissociation constant of hydrolysate is established on the basis of the hydro-lysate is established on the basis of the hydrolysis relationship for salts and the expression of ion product of water .