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Compared with PF6P, the attachment of alkyl or alkoxyl groups on phenylene effectively inhibits the formation of fluorenone-based excimers and thus remarkably improves the thermal stability of the spectra.3. Morphology and phase behavior of the polymers substituted with alkyl and alkoxyl groups on phenylene were investigated by differential scanning calorimetry, X-ray diffraction and other techniques.

一方面,未取代的PF6P薄膜和烷氧基取代苯的PF60C6薄膜在空气中退火后都产生了芴酮结构,随退火温度的升高所生成的芴酮结构的含量逐渐增大;另一方面,新的长波发射随退火温度的升高其荧光寿命明显增加,因此确定PF6P空气退火薄膜的长波发射是来源于芴酮的激基缔合物。

After the carboxymethylation,the solubility of pachyman in the water was significantly increased,its β-D-glucan characteristic absorption peak at 890 cm-1 became weak obviously,and its methylene vibration absorption peak and CO antisymmetrical stretch vibration absorption peak appeared at 1 333 and 1 606 cm-1 respectively,which indicated that the carboxymethylation succeeded.The analysis of AFM results showed that CMP molecules existed in different morphology under different solution conditions,and that the concentration,ionic strength and solvent physical chemistry characteristics of polysaccharide solution had effects on the CMP chains conformation and the action mode between different molecular chains.The phenomena were considered to be related to hydrogen bond association and intramolecular and intermolecular electrostatic interactions of CMP.

结果表明:经过羧甲基修饰,茯苓多糖在水中的溶解性显著增加,890 cm-1 处的β-D-葡聚糖特征吸收峰明显减弱,1 333 cm-1 处出现次甲基振动吸收峰,1 606 cm-1 处出现〖JG(〗C〖ZJLX,Y〗O〖JG)〗非对称伸缩振动吸收峰,表明羧甲基化成功;原子力显微镜分析表明:在不同溶液条件下,CMP分子以不同形态存在,多糖溶液的浓度、离子强度及溶剂的物化特性均能对CMP的分子链构象及链间相互作用形式产生影响,推测可能与CMP分子内、分子间的氢键缔合及静电作用有关,CMP分子与云母基底间的吸附及静电作用也会对CMP的分子链构象及图像质量产生影响。

The effects of the surfactants, trioctyl phosphine oxide, sodium dodecyl sulfonate and hexadecyl trimethyl ammonium bromide, on the extraction rate of Co^2^+ were investigated. The acceleration in the kinetics in contributed to the associated molecule~2 TOPO taking part in the extraction process directly. The decrement effects of SDS or CTMAB on the rate of extraction kinetics of Co^2^+ with HDEHP were also observed, which caused by the adsorption of molecules of SDS or CTMAB on the interface and decreased the interfacial adsorption amount of HDEHP. In addition, the extraction rate was reduced by a bigger margin in HDEHP-SDS system. This can be explained in terms of the formation of an electric field at the interface.

研究体系中加入不同表面活性剂所引起萃取速率的不同改变:三辛基氧化膦因与HDEHP形成可萃取的Co^2^+活性分子缔合物,降低了萃取过程活化能而使反应加速;十二烷基磺酸钠和十六烷基三甲基溴化铵因占据发生萃取反应的界面区,减小了HDEHP与Co^2^+反应的机会而使反应减速; SDS还因其在界面形成较强的负电场,造成Co^2^+的附加势能而使萃取速率有更大幅度的降低。

The value off in mixing rule two(MR2)is found to be a strong function oftemperature and to depart significantly from unity for most systems.

在综合分析混合规则二(MR2)中的f校正因子基础上,作者认为f因子是不可预测的,即直接进行超额性质间的相互预测是困难的,特别是高压下的相平衡推算,对大多数含缔合组分体系的误差将很大。

The direct interaction of copper ion with CuZnSOD was studied by fluorescence spectroscopy, and a type of 1:1 stable complex has been generated, which was certified by the quenching experiment of intrinsic fluorescence. The process of the generated complex shown by dynamic analysis of fluorescence quenching, consisted of two steps, in which the first step was a quick association process of double molecules to generate a loose complex, and the second step was a slow process of single molecule, where the loose complex was isomerized into the compact complex.

通过荧光光谱方法研究了这种相互作用,内源荧光的猝灭实验表明Cu(上标 2+)与CuZnSOD形成1:1型稳定配合物;荧光猝灭的动力学分析表明配合物形成过程由两个独立步骤完成:第一步是双分子快速缔合过程,形成了结合疏松的配合物,第二步是单分子慢速过程,即松散的配合物&异构化&成为结合紧密的配合物。

The direct interaction of copper ion with CuZnSOD was studied by fluorescence spectroscopy, and a type of 1∶1 stable complex has been generated, which was certified by the quenching experiment of intrinsic fluorescence. The process of the generated complex shown by dynamic analysis of fluorescence quenching, consisted of two steps, in which the first step was a quick association process of double molecules to generate a loose complex, and the second step was a slow process of single molecule, where the loose complex was isomerized into the compact complex.

通过荧光光谱方法研究了这种相互作用,内源荧光的猝灭实验表明Cu2+与CuZnSOD形成1∶1型稳定配合物;荧光猝灭的动力学分析表明配合物形成过程由两个独立步骤完成:第一步是双分子快速缔合过程,形成了结合疏松的配合物,第二步是单分子慢速过程,即松散的配合物&异构化&成为结合紧密的配合物。

Single component and multi\|component of iron system colloidal catalyst \Ali\|Bu\-3CH\-2CHCH\-2Cl\ were mixed by different ratios in hydrogenated gasoline medium at 25℃.This paper studied the relationship between the nonaqueous systematic electroconductivity and the concentration of catalyst components.In combination with Tyndall effect,polymerization experimental results,Ali\|Bu\-3 existed in associated state and dissociated into ionpair.The reaction between Ali\|Bu\-3 and Fenaph\-2 was the main reaction which formed colloidal core.Ali\|Bu\-3 reacted on CH\-2CHCH\-2Cl and Ali\|Bu\-2Cl was yielded which joined the formation of active center on the surface of colloidal core.The excessive Ali\|Bu\-3 was dissociated into ionpair which formed double electrode layer,and the double electrode layer kept the colloidal particles relatively stable.

研究了在25℃加氢汽油介质中,铁系胶体催化剂[Fenaph2Ali-Bu3―CH2==CHCH2Cl]单组分、多组分按不同配比混合,非水体系电导率与浓度的关系,结合Tyndall效应,聚合实验结果,得出Ali-Bu3以缔合状态存在并解离成离子对它同环烷酸亚铁的作用是形成胶核的主要反应,与氯丙烯反应生成的氯化异丁基铝,在胶核表面参与形成活性中心由过量Ali-Bu3解离的离子对形成的双电层结构,使胶粒保持相对稳定。

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