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缔合动力学
相关语句
  associative kinetics
     Study on the associative structure of coal Ⅰ Associative kinetics in solution
     煤的缔合结构研究Ⅰ溶液缔合动力学
短句来源
     The associative kinetics of one coal soluble constituent; pyridine insoluble (PI) and carbon disulfide-N-methyl-2-pyrrolidinone (CS_2/NMP) mixed solvent soluble was investigated.
     研究了煤可溶组分吡啶不溶物(PI)在溶液中的缔合动力学,该PI系二硫化碳 N 甲基 2 吡咯烷酮(CS2 NMP)混合溶剂可溶组分。
短句来源
  “缔合动力学”译为未确定词的双语例句
     By measuring light-scattering data as the function of time, the kinetics of G-actin association was studied. In a low concentration, the VO ̄(2+) ions, like Mg ̄(2+), promote the association, but in case of higher concentration, the effect turns to be inhibitive.
     用光散射法测定G-肌动蛋白缔合动力学,发现在低浓度VO ̄(2+)影响下,VO ̄(2+)和Mg ̄(2+)一样,促进缔合,而在浓度高时,缔合反而受到抑制。
短句来源
     CROSS-ASSOCIATION DYNAMICS OF LIVING SPECIES OF BIMETALLIC INITIATING SYSTEM IN LIVING POLYMERIZATION OF STYRENE
     双金属引发体系苯乙烯活性聚合活性种的交互缔合动力学
短句来源
  相似匹配句对
     Dynamics of Rational Functions
     有理函数的动力学
短句来源
     Dynamics of Enzyme Catalysis
     酶催化动力学
短句来源
     Study on the associative structure of coal Ⅰ Associative kinetics in solution
     煤的缔合结构研究Ⅰ溶液缔合动力学
短句来源
     CROSS-ASSOCIATION DYNAMICS OF LIVING SPECIES OF BIMETALLIC INITIATING SYSTEM IN LIVING POLYMERIZATION OF STYRENE
     双金属引发体系苯乙烯活性聚合活性种的交互缔合动力学
短句来源
     Thermodynamics of Associated Solutions
     缔合溶液的热力学
短句来源
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The interaction of VO ̄(2+) and G-actin was studied by gel-chromatography, fluorescence and CD spectroscopies. The results revealed that for one G-actin molecule, there is one strong-binding site and several weak-binding sites for VO ̄(2+), In low molar ratio of VO ̄(2+): G-actin vanadyl ions occupy the strong-binding site at first and cause an increase of α-helix content and transformation of the conformation to a more compact one. As the molar ratio increases, vanadyl ions bind to weak-binding sites, but the...

The interaction of VO ̄(2+) and G-actin was studied by gel-chromatography, fluorescence and CD spectroscopies. The results revealed that for one G-actin molecule, there is one strong-binding site and several weak-binding sites for VO ̄(2+), In low molar ratio of VO ̄(2+): G-actin vanadyl ions occupy the strong-binding site at first and cause an increase of α-helix content and transformation of the conformation to a more compact one. As the molar ratio increases, vanadyl ions bind to weak-binding sites, but the α-helix content decreases and the conformation becomes rather opened. By measuring light-scattering data as the function of time, the kinetics of G-actin association was studied. In a low concentration, the VO ̄(2+) ions, like Mg ̄(2+), promote the association, but in case of higher concentration, the effect turns to be inhibitive. However, the nature of linear association is not changed.

用凝胶色谱法以及荧光光谱和CD谱研究VO ̄(2+)与G-肌动蛋白的作用。结果表明,在一个G-肌动蛋白分子上有一个VO ̄(2+)的强结合部位和几个弱结合位点。随VO ̄(2+)与肌动蛋白的摩尔比增加,VO ̄(2+)先结合在强结合位点上,使α-螺旋含量增加,蛋白质构象变得更为紧密。更多的VO ̄(2+)结合在弱结合位点上,使α-螺旋含量降低,构象变得更为开放。用光散射法测定G-肌动蛋白缔合动力学,发现在低浓度VO ̄(2+)影响下,VO ̄(2+)和Mg ̄(2+)一样,促进缔合,而在浓度高时,缔合反而受到抑制。但是都未改变线性缔合本质。结果提示VO ̄(2+)与Mg ̄(2+)相似,可能结合在钙的强结合部位上。

The associative kinetics of one coal soluble constituent; pyridine insoluble (PI) and carbon disulfide-N-methyl-2-pyrrolidinone (CS_2/NMP) mixed solvent soluble was investigated. It is clarified that the aggregation of PI molecules in NMP solution is a reaction controlled mechanism. A two-step kinetic process is provided, which are the formation of elemental aggregates and their clustering. The associative rates for the aggregation at different holding temperatures and solvents are determined, and the rate constants...

The associative kinetics of one coal soluble constituent; pyridine insoluble (PI) and carbon disulfide-N-methyl-2-pyrrolidinone (CS_2/NMP) mixed solvent soluble was investigated. It is clarified that the aggregation of PI molecules in NMP solution is a reaction controlled mechanism. A two-step kinetic process is provided, which are the formation of elemental aggregates and their clustering. The associative rates for the aggregation at different holding temperatures and solvents are determined, and the rate constants follow the Arrhenius equation. The activation energy of the aggregation of PI molecules in NMP solution is 73.3?kJ/mol and 21.6?kJ/mol for the first and the second step, respectively. The effect of temperature on the aggregation rate is remarkable, and the aggregation rate increases with increasing temperature. The aggregation rate of PI molecules in CS_2/NMP mixed solvent is more quickly than that in NMP due to the higher diffusibility (mobility) of PI-1 molecules in the mixed solvent. The aggregation mechanism of PI molecules in solution is also discussed.

研究了煤可溶组分吡啶不溶物(PI)在溶液中的缔合动力学,该PI系二硫化碳 N 甲基 2 吡咯烷酮(CS2 NMP)混合溶剂可溶组分。结果表明PI在NMP溶液中的缔合属于反应控制机理,并提出了二步动力学反应过程,即基本缔合单元的生成和缔合单元之间的缔合。通过实验获得了有关缔合的动力学参数,PI在NMP溶液中二步缔合的活化能分别为73.3kJ mol和21.6kJ mol。温度对缔合速率的影响显著,随着温度的升高,缔合速率增加。由于PI分子在CS2 NMP混合溶剂中相对NMP具有较高的扩散性,因而其在CS2 NMP混合溶剂中缔合速率较NMP快。此外,还讨论了PI在溶液中的缔合机理。

A simple viscosity method from Pal-Rhodes equation was described for the change of solution viscosity with time for one kind of coal soluble constituents PI-1, and the aggregation dimensions of the aggregates in solutions were calculated. The aggregation dimensions of PI-1 molecules in NMP and in CS_2/NMP mixed solvent at 25 ℃ are 2.08 and 2.19, respectively, indicating the aggregation of PI-1 in solution is a reaction limited aggregation (RLA) mechanism. The aggregation dimension decreases with increasing temperature,...

A simple viscosity method from Pal-Rhodes equation was described for the change of solution viscosity with time for one kind of coal soluble constituents PI-1, and the aggregation dimensions of the aggregates in solutions were calculated. The aggregation dimensions of PI-1 molecules in NMP and in CS_2/NMP mixed solvent at 25 ℃ are 2.08 and 2.19, respectively, indicating the aggregation of PI-1 in solution is a reaction limited aggregation (RLA) mechanism. The aggregation dimension decreases with increasing temperature, suggesting the aggregation kinetic process may be converted to a diffusion limited aggregation (DLA) mechanism at higher temperature. The aggregation dimension of PI-1 aggregates is larger in NMP solution than that in CS_2/NMP mixed solvent at high temperature (50 ℃), indicative of a lower aggregation kinetic process in NMP due to the lower diffusibility (mobility) of PI-1 molecules in NMP compared to that in CS_2/NMP mixed solvent.

采用Pal-Rhodes方程描述了一种煤可溶组分PI-1溶液黏度随时间的变化关系,并计算得到了缔合物的缔合维数。25℃下PI-1在NMP和CS2 /NMP混合溶剂中缔合物的缔合维数分别为 2. 08和 2. 19,表明其在低温下缔合属于反应控制机理。随着温度的提高,缔合维数趋于减小,表明在较高温度下,PI-1具有较快的缔合动力学过程,在 50℃时PI-1在NMP中的缔合维数大于在CS2 /NMP混合溶剂中的缔合维数,表明PI-1在NMP的缔合速率相对低于CS2 /NMP混合溶剂。

 
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