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standard reaction
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  标准反应
     The computing table has modified the mistaken calculation of change of standard reaction free energy by a book.
     本论文中还列出了以甲烷蒸汽重整反应为主的包括多个反应在内的以标准反应自由能的变化来计算反应平衡常数的计算表,可以方便而准确的计算这些反应在不同温度下的平衡常数。
短句来源
     After the chiral additives were screened from many compounds, additive M was proved to help asymmetric bioreduction of ethyl-4-chloroacetoacetate by baker's yeast remarkably . By virtue of additive M, the standard reaction system of bioreduction by yeast was established to determine influences of bioconversional conditions on yield and enantiomeric excess (E. e) of Ethyl- (S)-chloro-3-hydroxybutyrate.
     从多种化合物或混合物中筛选得到了手性添加剂M,使得酵母菌在一定条件下可以催化还原4-氯-乙酰乙酸乙酯,由此建立了研究酵母菌催化还原反应合成手性纯光学异构体(S)-4-氯-3-羟基-丁酸乙酯的标准反应体系,以进一步研究影响酵母菌催化还原反应的多种因素和工艺条件。
短句来源
     The value of reaction spectrum of natural frequencies is calculated by standard reaction spectrum.
     依据标准反应谱,得到各阶频率对应的反应谱值。
短句来源
     The subunit molecular weight is about 55×10 3. The enzyme activity assaying system is excessive ATP in standard reaction system. The surplus ATP of phosphorylation reaction was extracted then was decomposed by chloroplast Mg 2+ ATPase. After that the inorganic phosphorus was assayed by combined malachite green reagent.
     纯化的 Ca2 + / Ca M依赖性蛋白激酶经 SDS-聚丙烯酰胺凝胶线性梯度电泳 ,亚基分子量约为 5 5× 10 3.在 Ca2 + / Ca M依赖性蛋白激酶的标准反应体系中 ,存在过量的 ATP,提取磷酸化反应剩余的 ATP,用叶绿体 Mg2 + - ATP酶分解 ATP,最后用复合孔雀绿测定无机磷 ,从而来计算 Ca2 + / Ca M依赖性蛋白激酶的活性 .
短句来源
     The curves of standard reaction free enthalpies and te m perature,adiabatic temperature and Ni content,adiabatic temperature and preheati ng temperature have been drawn by thermodynamic programming calculation based on thermodynamic principle. The results show that the main reaction of Ti-C-Ni sy stems is Ti+C=TiC.
     根据热力学原理对Ti、C、Ni三元体系进行热力学编程计算 ,绘出了标准反应自由焓随温度变化的曲线、绝热温度随Ni含量变化的曲线以及绝热温度随预热温度变化的曲线 ,通过对曲线进行分析认为 :Ti、C、Ni三元体系的主反应是Ti+C =TiC ;
短句来源
  “standard reaction”译为未确定词的双语例句
     The first strand cDNA was synthesized using reverse transcriptase and primer mixture of three virus-specific reverse primers(0.5 μmol/L each) and 18S rRNA reverse primer(0.5 μmol/L). A series of conditional assays resulted in modification of the standard reaction components.
     在RT反应体系中加入3种病毒和18S rRNA的特异性反向引物的混合物,使反应体系中各反向引物终浓度均为0.5μmol/L,反转录酶(AMV)反转录合成各病毒和18S rRNA的互补第一链cDNAs。
短句来源
     A STUDY ON THE FREE ENERGY RELATIONSHIPS Ⅲ. σ~* VALUES FROM THE DISSOCIATION OF CARBOXYLIG ACIDS AS THE STANDARD REACTION SERIES
     直线自由能关系的研究——Ⅲ.以羧酸的离解为模型反应系的σ~*值
短句来源
     On basis of the work in this paper, we have gotten melting point, melting heat and heat capacities for 1,2-cyclohexanediol by DSC, standard combustion enthalpy have obtained by calorimeter, standard formation enthalpy, standard reaction enthalpy of1,2-cyclo-hexanediol have been calculated according to thermodynamic principle.
     本研究还由DSC测试技术,实验测定了顺式-1,2-环己二醇和反式-1,2-环己二醇的熔点、熔化焓和定压热容,建立了两种不同几何结构(顺式-,反式-1,2-环己二醇)的混合物的熔化温度与组成之间的关系,以及熔化焓与组成之间的关系,同时还建立起了定压热容与温度之间的关系;
短句来源
     We found that the melting point of our product was similar with trans-1,2-cyclohexanediol, so it demonstrates that the product is trans-1,2-cyclohexanediol. Then , we measured the standard combustion enthalpy , and we can calculated to get the standard formation enthalpy and the standard reaction enthalpy .
     其次,对1,2—环己二醇的标准摩尔燃烧焓Δ_CH_m~0进行了测定,进而得到了1,2—环己二醇的标准摩尔生成焓Δ_fH_m~0和标准摩尔反应焓Δ_rH_m~0。
短句来源
     The factors having effect on asymmetric bioreduction of ethyl-4-chloroacetoacetate by baker's yeast had been investigated in standard reaction system . The technical conditions of bioreduction by baker's yeast were obtained, including appropriate temperature, pH, the sort of pH buffering system, initial sub. concentration, carbon resource, the adding mode of sub.
     对影响酵母菌催化还原4-氯-乙酰乙酸乙酯反应因素进行了研究,结果确定了适宜的温度(30-31℃)、pH值、pH缓冲体系类别、初始底物浓度、碳源底物和能源物的添加方式等工艺条件。
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  相似匹配句对
     Which is the standard?
     采用什么标准评价?
短句来源
     Standard
     标准
短句来源
     Standard State and Reaction Equilibrium Constant of Thermodynamics
     热力学标准状态与反应平衡常数
短句来源
     Standard Constant of Electrode Reaction and Its Application
     电极反应标准常数及其应用
短句来源
     The Sulfinatodehalogenation Reaction
     亚磺化脱卤反应
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  standard reaction
The real neurodystrophy in the result ofSperansky's standard reaction as a reflectoric destroying process remains clinically doubtful or seems to be a rare and unusual process.
      
It is calculated from the solubility data in binary systems, using the model of a regular solution to estimate the interaction coefficient from existing standard reaction data.
      
These conditions occur at low H2 pressures (>amp;lt;0.16 atm) and are signalled by (i) deactivation that occurs with ?standard' reaction pulses and (ii) changes in the sense of product selectivity variation, as H2 pressure is altered.
      
In our simulation of the dissolution of a solid block inside uniformly flowing water we obtain solid precipitation downstream from the original solid edge, in contrast to the standard reaction-transport equations.
      
Adaptation of a standard reaction/diffusion approach produces a model of radially expanding coupled "traveling-wave" shock fronts of interrelated contagious physical decay and criminal activity.
      
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ABSTRACT The validity of the Hammett equation was reexamined in this paper with dissociation constants of anilines as well as phenols.It has been found that for eighty selected pKa values of anilines,seventy of phenols,and twenty one of N,N-dimethyl anilines could be correlated linearly with the substituent constants with satisfactory or excellent results.The ? scale was proposed as a parameter for another type of standard reaction series in which the functional group is capable of donating electrons conjugatively...

ABSTRACT The validity of the Hammett equation was reexamined in this paper with dissociation constants of anilines as well as phenols.It has been found that for eighty selected pKa values of anilines,seventy of phenols,and twenty one of N,N-dimethyl anilines could be correlated linearly with the substituent constants with satisfactory or excellent results.The ? scale was proposed as a parameter for another type of standard reaction series in which the functional group is capable of donating electrons conjugatively instead of withdrawing electrons,as is the case with ? in the dissociation of benzoic acids or with ? in aromatic electropbilic substitution.This parameter in combination with a few σ_(I.R.)~- values can likewise be used for measuring the linear free energy relationships in aromatic nucleophilic substitution reactions.A set of relatively complete σ~- values,of which seventy-eight are primary ?,fifty-four secondary and tertiary ?,eight ? eleven ?,seventy-three primary ? and twenty-three secondary and tertiary ?,are presented.However,values of those sub-stituents with formal charges must be accepted with some reservation.This set of σ-values has been shown to have excellent or at least satisfactory correlations with other sets of closely related σ values.This set of objective substituent constants can also be applied to aromatic nucleophilic substitution not any less adequately than that derived by J.Miller right from this very type of reactions.

本文用苯胺和苯酚的离解常数重新检查了Hammett方程式的有效性.发现了八十个选择的苯胺、七十个苯酚和廿一个N,N-二甲苯胺的pK_a值与取代基常数的直线相互关系能达到满意至优良标准(见表4).提出了以σ_((ArNH_3)~+)~-作为另一有推电子(而非拉电子)共轭效应的官能团的标准反应系的参数,并与少数σ_(I.R.)~-合用以衡量芳香亲核取代反应中的直线自由能关系.计算了一套较为完整的σ~-值,其中七十八个为初级值、五十四个为次级和三级值、八个σ_(I.R.)~-、十一个σ(ArHX~-)~-、七十三个初级σ_R~-和二十三个次级和三级σ_R~-.但带正式电荷的取代基常数必须有保留地接受.这一套σ~-值已证明与其他σ值有优良或至少是满意的相互关系.这套客观的取代基常数用之于芳香亲核取代反应不比Miller从该反应系中求出的数值差.

The results obtained in this study are as follows. 1. A more complete operational definition of σ~* values comparable to that Of the aromatic system is achieved by associating it with the PK_a values of aliphatic carboxylic acids at a definite temperature in a given solvent system. Several thousands of σ values of various types for a thousand odd substituents in the aliphatic system have been calculated. 2. The number of standard reaction series has been increased such as to make it ultimately possible...

The results obtained in this study are as follows. 1. A more complete operational definition of σ~* values comparable to that Of the aromatic system is achieved by associating it with the PK_a values of aliphatic carboxylic acids at a definite temperature in a given solvent system. Several thousands of σ values of various types for a thousand odd substituents in the aliphatic system have been calculated. 2. The number of standard reaction series has been increased such as to make it ultimately possible to apply the LFR universally in the aliphatic system, and yet the original scale of σ~* value is maintained so that the new values can have a simple mathematic relationship with other types of σ values. They also have an excellent grade of linear relationship with the inductive constants of Branch and Calvin. 3. The number of substituents correlated in the LFR has been increased such that the statistic reliability of these correlationships is enhanced. 4. Selfconsistancy is attained for the scale of σ~* values with both substituted alkyl as well as alkyl groups without requiring an arbitrary value of zero being assigued to all the alkyl groups. 5. It is shown that the σ~* values of various groups are not only related to the inductive effect, but are also associated with a complex set of factors, such as configuration, conformation, internal hydrogen bonding, inter-and intra-molecular Lewis acid-base reaction, electrostatic field effect, electrokinetic dispersion effect, etc. 6. The argument that the σ~* value of the alkyl group depends mainly, if not entirely, upon an intramolecular electrokinetic dispersion effect has been substantiated by evidence from a study on the σ~* and ρ~* relations in the amino acid system in comparison with those in other carboxylic acid systems. An example is presented to show that, in principle, the problem of deviations being always associated with the formally charged groups can be solved. 7. An attempt has been made to establish a model reaction system for the amino acids in which there is a special transmission structure with a formal charge and for which a special set of new σ~* values is required and alkyl groups are electron withdrawing.

本文成果可以归纳为:(1)将σ~*值较严格地给予了与芳香系σ值相仿的工作定义。即同是将其与羧酸在一定温度和溶剂系中的pK_a值联系起来,并计算了脂肪系中千余个取代基的数千个不同种类的σ值。(2)增加了模型反应系的种类,使最后有可能达到直线自由能的定量关系在脂防系中普遍应用。但σ~*值仍保持原有标度,因而与其它类型σ值能有简单的数学关系。与历史较早的Branch和Calvin的诱导常数有优良标准的直线关系。(3)将相互关联的取代基数目扩大,增加了统计上的可靠程。(4)使烷基与取代烷基的σ值归于一致的标度线商不要求烷基值都固定为零。(5)阐明了σ~*值与构型、构象、内氢键的形成、溶剂化作用、分子间和分子内的Lewis酸碱作用、静电场力效应、动电分散效应等复杂因素密切相关,远不仅限于代表诱导效应。(6)用氨基酸中的σ~*与ρ~*值与其它羧酸系作比较而证实了烷基的σ~*值主要取决于分子内的动电效应。举例说明带电荷基出偏差的问题在原则上是可以解决的。(7)尝试建立一个氨基酸的模型反应系,其中具有一个带正式电荷的独特传导结构,因而必需有一套全新的σ~*值,烷基成为拉电子取代基。

An RNA transcriptase activity of grass carp hemorrhage virus cores was demonstrated by the study on the in vitro transcription withα-32P ATP as the label. The transcriptase activity of GCHV virions appeared more effectively by loosening the outer capsid shell in the standard reaction mixture ( containing 50mM Tris·HCl, pH 8.0) than by digesting with chymotrypsin. The reaction at 28℃, which is its optimum temperature,can be maintained for a long period of time(above 14 hours). The transcriptase products...

An RNA transcriptase activity of grass carp hemorrhage virus cores was demonstrated by the study on the in vitro transcription withα-32P ATP as the label. The transcriptase activity of GCHV virions appeared more effectively by loosening the outer capsid shell in the standard reaction mixture ( containing 50mM Tris·HCl, pH 8.0) than by digesting with chymotrypsin. The reaction at 28℃, which is its optimum temperature,can be maintained for a long period of time(above 14 hours). The transcriptase products are single-stranded copies of GCHV genome ds RNA. This was shown by autoradiograms of polyacrylamide gels in which the transcriptase products hybridized with GCHV genome RNA had been electrophoresed.

以α-~3~2P-ATP为标记物研究了草鱼出血病病毒的体外转录,证实该病毒的核心具有RNA转录酶。此酶在28℃反应活性最高,并保持较长时间。完整的病毒位子在50mM Tris·HC1(pH8.0)的反应混合物中表现出的酶活性比经糜蛋白酶消化所得的核心更高。对转录酶反应产物的分析表明,新合成的产物是病毒基因组双链RNA的单链拷贝。

 
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