查询词典 kinetics

A kinetic model of HDS is established according to a second-order kinetics model at various reaction temperatures. The parameters of the model are calculated.

采用2级平推流反应动力学模型对不同温度实验数据进行了拟合，求得了不同温度的表观反应速率常数，模型的相关系数＞0.989。

The kinetics of transesterification of extracted oil was also studied. The experimental data could to be described by second-order reaction model for the initial stages of the transesterification and followed b first-order reaction and zero-order reaction model.

考察了大豆油脚浸出油酯交换反应的动力学，由实验数据绘制的动力学曲线呈现出酯交换反应在开始阶段为二级反应，并逐步转变为一级反应，反应后期为零级反应。

The results of FT-IR 1H-NMR indicate the structure of polyester, and the 13C-NMR analysis of three quaternary carbon showed the existing of hyperbranched struscture, MALDI-TOF MS showed the hyperbranched polyester structure, the degree of branching of the polyesters determined by 13C-NMR being 0.408. The esterification reaction kinetics followed a second-order equation and the reaction rate was controled by the concemtration of carboxyl group and hydroxyl group,-d/dt=K.

以IR、1H-NMR证实了聚酯结构的存在，13C-NMR谱图上3种季碳的特征峰有力证实了超支化分子结构的存在，MALDI-TOF MS证明了超支化聚酯的成功合成，并计算超支化聚酯的支化度为0.408；探讨并建立了超支化聚酯的缩聚反应动力学方程－d/dt=K，该缩聚反应属于二级反应，反应速率由羟基浓度和羟基浓度共同决定。

The pyrolysis characteristics and kinetics of green seaweed Enteromorpha clathrata were studied with thermogravimetric analysis method. The pyrolysis was carried out at different heating rates (10, 20, 30℃/min) and particle sizes (0.18, 0.28, 0.45mm).

以2005年10月采自江苏如东海区的条浒苔为研究材料，用热重分析法对其热解过程及其动力学规律进行了研究。

This text sets out from kinetics property of the electronics inside the high frequency electromagnetism field,getting the influence of the radio frequency to inner resistance of cavity resonance and the relation with ion energy.

文中从高频电磁场内电子的运动学性质出发，得出射频频率的变化对谐振腔增益管内部阻抗的影响，及其与等离子体能量的关系。

Thermal insulation material used in air-conditioning circuitry system may initiate the fire,therefore there is a a higher request for improvement on combustibility of thermal insulationfoam, and it is urgently to strengthen the research on flame-resistant thermal insulation forair-conditioning systmem; so many aspects such as retarding mechanism, heat degradationcharachteristic, and prediction in kinetics and so on, of fire retardant foam become a newresearch subject.

空调系统的管路系统保温材料可引发火灾，因此对泡沫保温材料的燃烧性能提出了更高的要求，亟需加强对空调用泡沫阻燃材料的研究，而泡沫阻燃材料的阻燃机理、热解特征和动力学预测等方面的问题形成一个新的研究课题。

The vacuum distillation kinetics of metals or alloy is studied.

计算了铅、锌真空蒸发的理论能耗。

Curing kinetics of epoxy resin and the effects of different compositions on curing reaction were researched by using the differential scanning calorimeters. Relationship between curing temperature and curing converting rate had been studied. Curing conditions for the system were determined. Modified nano-Al2O3/epoxy resin and core shell/epoxy resin composites were prepared by means of blending method. The influence of the composition on the properties was discussed. The thermal and dielectric properties of these composites were investigated using differential scanning calorimetry, Thermogravimetry and dielectric analyzer.

首先，论文通过差示量热扫描仪分析研究了环氧树脂与酸酐固化体系的固化反应动力学及固化工艺；然后，通过共混法和超声分散法制备了一系列纳米氧化铝/环氧树脂及核壳粒子/环氧树脂两相复合材料；进而通过DSC及热重分析仪测试了复合材料的玻璃化温度、热降解温度等热学性能，并采用介电分析仪测试分析了复合材料的介电常数、介电损耗等介电性能，讨论了组成对复合材料的热学性能及介电性能的影响。

A novel experimental technique was developed to study the aging mechanism and kinetics of crude terephthalic acid particles in acetic acid.

针对粗对苯二甲酸高温熟化过程的特点，开发了一套气液固三相熟化动力学实验技术，进行了熟化过程的动力学实验研究，对粗对苯二甲酸的熟化过程机理进行了剖析和数学描述。

In recent years, crystallographers have developed a series of method to improve the quality of protein crystals, such as crystal growth in metastable zone, influencing the kinetics process of protein crystal in special environment, obtaining high quality crystals by adding detergent and reductive methylation of proteins.

近年来人们从影响蛋白质结晶过程的各个因素出发，发展了一系列提高蛋白质晶体质量的方法，如在亚稳区生长蛋白质晶体、利用特殊环境影响蛋白质晶体生长的动力学过程、利用去垢剂提高蛋白质晶体质量和分子工程改造蛋白质分子提高晶体质量等。

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％。