查询词典 kinetics

The hydrolysis kinetics of two salicylates (n-butyl salicylate, phenyl salicylate) are studied in CTAB surfactant solution by using UV-vis spectroscopy.

应用UY—vis法，在不同温度条件下，对水杨酸酯在CTAB溶液中的水解反应进行跟踪，测定了不同浓度的表面活性剂存在下的反应速率常数，得出CTAB对其反应是禁阻作用。

The cure kinetics of naphthyl/dicyclopentadiene epoxy resin and bis-phenoxy (3-hydroxy) phosphine oxide was investigated by differential scanning calorimetry under nonisothermal and isothermal condition.

用差示扫描量热仪研究了含萘环和二环戊二烯环结构环氧树脂NDEP和BHPPO的等温和非等温固化动力学。

Keywords Pulse radiolysis, Antioxidant, Kinetics, Free radical

等也会通过直接或间接作用产生活性氧自由基。

For the aged aluminum alloys which generally contain disc/plate-shaped or rod/needle-shaped precipitates, a model has been established, from the viewpoints of thermodynamics, kinetics and strengthening theory, to relate quantitatively the yield strength to the size, volume fraction and aspect ratio of precipitates which all were analytical associated with the chemical compositions of alloys, aging temperature and aging time. This model has been experimentally proved to well predict the variation of yield strength with the evolution of disc/plate-shaped or rod/needle-shaped precipitates for present Al-4. 62wt% Cu-0.65wt% Mg alloy aged at 513K and Al-1. 12wt% Mg0.57wt% Si alloy aged at 463K, respectively, and the yield strengths simulated by this model were also found to be in well agreement with previously measured values for a series of aged Al-Cu binary alloys, AA6061 and Al-Zn-Mg alloys.

以析出热力学、长大动力学及强化理论为基础，研究了含有盘/片状、棒/针状时效析出强化相铝合金在时效过程中时效析出相尺寸、体积分数和长径比等参数的演变及其对合金时效强化效果的影响，给出了合金成分、时效变量与微观组织参数之间非线性的解析表达关系式，进而从微观结构—宏观性能相结合的角度出发建立起了具有盘/片状、棒/针状时效析出相铝合金的时效工艺—屈服强度量化模型，并将该模型应用于不同温度、连续不同时间时效下Al-Cu二元系列合金、6061铝合金和Al-Zn-Mg系列合金的屈服强度预测，得到了与前人实测值吻合良好的结果。

A deep theoretical study of the structure and chemical kinetics mechanism of premixed laminar flame is performed in this dissertation, a corresponding numerical model is developed.

本文对预混层流火焰的结构和化学反应动力学做了深入的理论研究，建立了相关的计算模型。

ABSTRACT A deep theoretical study of the structure and chemical kinetics mechanism of premixed laminar flame is performed in this dissertat...

本文对预混层流火焰的结构和化学反应动力学做了深入的理论研究，建立了相关的计算模型。

ABSTRACT A deep theoretical study of the structure and chemical kinetics mechanism of premixed laminar flame is performed in this dissertation, a corresponding numerical model is developed.

本文对预混层流火焰的结构和化学反应动力学做了深入的理论研究，建立了相关的计算模型。

As to loading and entrapment efficiency, as well as protein release kinetics, both PLGA and PELA microspheres are superior to gelatin ones significantly.

PLGA微球和PELA微球的药物释放动力学较明胶微球稳定；PLGA微球释出的bFGF生物活性高于PELA微球。

Methods:(1) bFGF was loaded with PLGA, PELA and gelatin microspheres. The pharmac characteristics of particle size distribution, loading efficiency, entrapment efficiency, bFGF release kinetics were evaluated with scanning electronic microscope, MTT and ELISA respectively.

目的：制备bFGF缓释微球并作处方筛选，在体外培养的软骨细胞中观察其促有丝分裂作用和促基质合成作用，以及在兔膝关节全层软骨缺损模型中验证其促进软骨修复的作用，为其临床应用提供实验基础。

Methods:(1) bFGF was loaded with PLGA, PELA and gelatin microspheres. The pharmac characteristics of particle size distribution, loading efficiency, entrapment efficiency, bFGF release kinetics were evaluated with scanning electronic microscope, MTT and ELISA respectively. The prescription with the best pharmac characteristics and the highest bioactivity of bFGF was chosen for the next step.

（1）制备PLGA，PELA和明胶微球，通过扫描电镜和激光粒度分布仪测定其粒径分布；ELISA法测定微球溶出度，包封率，bFGF释出动力学；MTT法测定微球释出的bFGF的生物活性，筛选出一种具有较好药剂学性质和较高bFGF生物活性的微球载体材料。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。