查询词典 kinetics

The kinetics process and temperature impact of natural groundwater denitrified by sulfur autotrophic was investigated. The results revealed that the denitrification rate of up-flow sulfur autotrophic denitrification filter followed a half-order kinetics model; and the reaction rate constant was mainly affected by the temperature. Based on the Arrhenius calculation, the activated energy was 80.38 kJ/mol.

研究实际地下水硫自养反硝化动力学过程，考察季节因素对动力学的影响，实验结果表明，地下水升流式硫自养滤柱反硝化动力学符合1/2级动力学模型，其反应速率常数受温度的影响很大，用阿仑尼乌斯方程计算硫自养反硝化活化能为80.38 kJ/mol。

That is why some hydrophobic ingredients should be added in order to made floating tablet with ideal floating duration other than decreasing the tableting pressure alone.According to the eroding kinetics, the floating tablet made of HPMC with greater viscosity as K100 MCR and K15 MCR is better than that made of HPMC E 15 LV. The erosion of the tablet made of HPMC E 15LV followed the first order kinetics. 20% of the tablet eroded with 4 hours which is 22 times that of the tablet made of HPMC K 100 MCR. The fast erosion of the tablet made of HPMC E15 LV led to quick buoyancy decrease. The quick swelling of floating tablet made of CMC-Na led to quicker water uptake.

溶蚀动力学表明，以高粘度HPMC K100MCR和K15 MCR制备的漂浮片，其漂浮性能要优于低粘度的HPMC如E15-LV，后者的溶蚀符合一级动力学规律，4小时内片面溶蚀达20％，溶蚀速度比前者大22倍，由于速度太快，漂浮制剂的漂浮力因此会迅速降低；高分子材料CMC-Na制备的漂浮片，虽然遇水后迅速膨胀使体积增大，但是，由于水渗入的速度大于体积膨胀的速度，因此不能产生足够的浮力和维持理想的持续浮力，另外，这种材料制备的漂浮片的溶蚀速度太快，4小时内片面溶蚀达30％，漂浮制剂的漂浮力也因此会迅速降低。

The experimental results indicates that the optimum pH range was 1.60~2.20, and the optimum H2O2 concentration was 10.0 mmol/L. The degradation ratio increased with the increasing concentration of ammonium ferric oxalate in the range from 0.1 to 1.0 mmol/L, but no significant increase in degradation ratio was observed when the concentration was above 1.0 mmol/L. When the concentration of fuchsin basic increased, the degradation ratio dropped, while the concentration of degraded fuchsin basic rised. When the concentration of fuchsin basic was low, the degradation followed first-order kinetics, but when it was high, the degradation could be fitted by zero-order kinetics. The absorbtion of fuchsin basic at 543 nm disappeared quickly, while the absorbtion of intermediates formed during the course of fuchsin basic dagradation at 298 nm vanished slowly.

试验结果表明：碱性品红降解的最佳初始pH为1.60~2.20，最佳初始H2O2浓度为10.0mmol/L；草酸高铁铵的浓度在0.1~1.0mmol/L时，碱性品红的降解率随浓度的增大而增大；高于1.0mmol/L时，则降解率相差不大；碱性品红的初始浓度增大，降解率减小，而实际降解的浓度则增加；碱性品红的浓度在低和高时，降解动力学过程不一致；随降解的进行，碱性品红在可见光区的吸收峰迅速消失，而降解过程中形成的中间产物吸收峰却消失很慢。

Because the kinetics of Beckmann rearrangement is very complicated and the reaction speed is very fast, the realization of its reaction kinetics is very variant.

由于贝克曼重排反应的机理非常复杂，而且该反应速率极快，因此对其机理的认识很不一致。

The experiments for determining the reaction kinetics of Daqing atmospheric residue were performed in a continuous flow, expanded bed rector. Four-lumped reaction kinetic model was developed to account for various feed and product fractions of Daqing atmospheric residue (gases, gas oil, residue and coke). The amounts of olefins and alkyls in the gas products were further analyzed to determine reaction kinetics of gas product distributions. Hence, a combined five-lumped reaction kinetic model was obtained for catalytic pyrolysis of Daqing atmospheric residue. The kinetic constants both in four-lump model and five-lump model were evaluated. A simulator for catalytic pyrolysis process was developed by incorporating the five-lumped kinetic model into the hydrodynamic flow model.

其次利用改进的固定流化床装置考察大庆常压渣油催化裂解反应规律，筛选反应工艺参数；分析了催化裂解工艺存在的主要化学反应类型，提出了渣油一次反应和二次反应网络图；将反应原料油作为单独集总组分，而将产品中的轻质油、气体、焦炭分别作为集总，从而建立了四集总动力学模型；在此基础上，把气体产物中的目的产物低碳烯烃独立划分，得到五集总动力学模型；采用最小二乘法分析实验数据，分别得到四集总动力学模型和五集总动力学模型中各集总间相互反应转化的反应速率常数。

The kinetics of reconstitution of apoacylase with either 〓 or 〓 and the inactivation of the 〓 reconstituted enzyme by 1, 10-phenanthroline has been studied by following the substrate reaction continuously in presence of the metal ion or OP respectively. Although the native 〓-containing and the 〓-reconstituted enzymes have closely similar Michaelis constants and maximal velocities, the kinetics for both the inactivation by OP and the reconstitution of the apoenzyme with the metal ions differs considerably.

虽然钴重组的氨基酰化酶与天然含锌的氨基酰化酶在催化活性上比较相近，但两种酶在去金属失活动力学机制以及去金属失活的氨基酰化酶与两种金属离子重组复活的动力学过程均存在较大的差异，说明锌在氨基酰化酶中的作用比较复杂，并不能完全由钴替代。

JCHI has cooperated with Tadano Ltd. of Japan establishing a joint venture of BQ-Tadano Crane Co., Ltd. to manufacture truck cranes and rough terrain cranes, and with Singapore Technologies Kinetics for Beijing Zhonghuan Kinetics Heavy Vehicles Co., Ltd to off-road heavy dumpers and habour haulers.

京城重工与世界着名起重机厂商日本株式会社多田野合资设立北起多田野起重机有限公司，生产汽车起重机和越野轮胎起重机；与新加坡科技动力设立合资企业中环动力重型汽车有限公司生产重型矿用汽车、港口牵引车等工程车辆产品。

To manufacture truck cranes and rough terrain cranes, and with Singapore Technologies Kinetics for Beijing Zhonghuan Kinetics Heavy Vehicles Co., Ltd to off-road heavy dumpers and habour haulers.

京城重工与世界著名起重机厂商日本株式会社多田野合资设立北起多田野起重机有限公司，生产汽车起重机和越野轮胎起重机；与新加坡科技动力设立合资企业中环动力重型汽车有限公司生产重型矿用汽车、港口牵引车等工程车辆产品。

JCHI has cooperated with Tadano Ltd. of Japan establishing a joint venture of BQ-Tadano Crane Co., Ltd. to manufacture truck cranes and rough terrain cranes, and with Singapore Technologies Kinetics for Beijing Zhonghuan Kinetics Heavy Vehicles Co., Ltd to off-road heavy dumpers and habour haulers.

京城重工与世界著名起重机厂商日本株式会社多田野合资设立北起多田野起重机有限公司，生产汽车起重机和越野轮胎起重机；与新加坡科技动力设立合资企业中环动力重型汽车有限公司生产重型矿用汽车、港口牵引车等工程车辆产品。

To manufacture truck cranes and rough terrain cranes, and with Singapore Technologies Kinetics for Beijing Zhonghuan Kinetics Heavy Vehicles Co., Ltd to off-road heavy dumpers and habour haulers.

京城重工与世界着名起重机厂商日本株式会社多田野合资设立北起多田野起重机有限公司，生产汽车起重机和越野轮胎起重机；与新加坡科技动力设立合资企业中环动力重型汽车有限公司生产重型矿用汽车、港口牵引车等工程车辆产品。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。