反应系数

M/s. The following dimensionless relationships were obtained: Sh=2+0.073Re〓Sc〓〓〓 The desulphurization process by powder injection and blowing in RH refining of molten steel and its mechanism have been considered and analyzed. Based on the tworesistance mass transfer theory and the mass balance of sulphur in the system, a kinetic model for the process has been developed. The related parameters of the model have been reasonably determined. Modeling and calculations for the process by injecting and blowing the lime based powder flux under the assumed operating modes in a RH degasser of 300t capacity have been carried out using the model.

考虑颗粒与液流的相对速度，RH—PTB条件下熔池传质特性可由下式表征： Sh=2+0.073Re〓Sc〓考虑紊流中脉动速度引起的能量耗散，RH—PTB条件下熔池传质过程服从如下关系：〓将粉剂颗粒与钢液间的传质当作刚性的气泡与钢液间的传质处理，对RH—PTB过程有：〓考察和分析了RH喷粉脱硫过程及机理，基于双重阻力传质理论和体系内硫的质量衡算，建立了RH喷粉脱硫过程的动力学模型，确定了模型各有关参数，包括各传质系数和脱硫处理过程中钢液内参与脱硫反应的粉剂量等。

It is convenient for sinter to be leached, and the secondary reaction appears little. The slurry after sinter leaching is transferred into autoclave for desilicification at about 170℃, and the siliceous modulus of solution reaches more than 200. Then some lime is added for deep-desilication at normal pressure, the siliceous modulus of solution increases more than 600 even if the Al2O3 content is more than 200g/L.The SiO2 coefficient in hydrate garnet from deep-desilication is more than 0.28. Under conditions of the addition of seed and application of novel technology of carbonization, the contents of Na2O and SiO2 in product are less than 0.37% and 0.025%, respectively.

实验结果显示：烧成的熟料溶出条件宽松，二次反应程度弱；溶出浆液在170℃左右直接进行加压脱硅，脱硅后溶液的硅量指数大于200，再加入适量的石灰进行深度脱硅，即使溶液中氧化铝浓度超过200g/L时，精液的硅量指数也大于600，且得到的水化石榴石中二氧化硅饱和系数大于0.28；通过加入晶种和采用新的碳酸化分解工艺制度，产品中的SiO2 含量降至0.025%， Na2O含量小于0.37%；加入表面活性剂，不仅能将碳分母液蒸发至Na2OT浓度大于300g/L，而且还可有效减缓表面上结疤的形成速度。

The separation factor of glycolic acid to glyoxylic acid increased with TRPO concentration from less than 1 to larger than 1. The models parameters K 11 and K 12 in the single acid system can be used to predict extraction equilibrium behavior in the mixture acid systems.

结果表明，随TRPO浓度的增大，分离系数β（glycolic /glyoxylic）由小于1逐渐增大至大于1，乙醇酸与TRPO的萃合物有1∶1和1∶2两种形式，采用单溶质萃取反应平衡常数预测双溶质萃取的结果，预测值与实验值相当接近。

So the hysteretic damping can be analyzed in the time domain.

从而为利用滞后阻尼系数在时域中进行土层地震反应分析提供依据。

The results gained from MACONP are indentical with that of RETRAN02/MOD2 program. Then, Incontrollable Control Rod Withdrawal ATWS , Loss Of Offsite Power ATWS , Turbine Trip ATWS and Loss Of Feedwater ATWS are analyzed emphatically. Based on the LOFW-ATWS analysis, the sensitivity analyses of the influence of some conditions on ATWS process are conducted, such as pressurizer relief valve blocking, putting pressurizer spray in, no turbine trip and decrease of moderator reactivity coefficient. The simulating results agree well with corresponding results of RELAP5/MOD2, both analyses consequences are consistent in the main.

本论文首先应用MACONP程序分析了秦山核电站的汽轮机保护停车瞬态，包括&压力有控制&和&压力无控制&两种情况，所得结果与RETRAN02/MOD2的计算结果吻合；然后着重分析了该电站的控制棒失控提升ATWS、失去厂外交流电源ATWS、汽轮机保护停车ATWS和失去主给水ATWS，并在LOFW-ATWS分析的基础上就稳压器释放阀卡死、稳压器喷淋投入、汽轮机不脱扣和慢化剂反应性系数减小等对ATWS进程的影响作了敏感性分析，仿真结果与RELAP5/MOD2的仿真结果符合良好，对结果进行分析所得到的分析结论也基本一致。

Zn-La alloys increase the overpotential ofhydrogen evolution, Tafel slope 〓 and polarization, decrease the corrosion current density, inhibitthe corrosion of zinc electrode in alkaline solution, decrease anode Tafel slope 〓, promotedischarge reaction of zinc electrode, have higher passivation current density, inhibit thepassivation of zinc electrode, avoid the oversaturation of zincate in electrolyte, greatly increase〓 diffusion coefficient, decrease Tafel slope 〓, polarization and the overpotential of deposition,inhibit the dendrites formation and improve the electrodepostion of Zn.

实验结果表明，Zn-La合金电极显著改善了锌电极的各项电化学性能：提高析氢过电位、析氢过程Tafel斜率〓和极化，减小腐蚀电流密度，抑制锌电极在碱液中的腐蚀；降低阳极Tafel斜率〓，促进了锌电极的放电反应；具有较高的维钝电流密度，抑制锌电极的钝化；有效避免了溶液中锌酸盐的过饱和现象：使〓的扩散系数明显增大：降低Zn沉积过程的Tafel斜率〓、极化和沉积过电位，明显抑制锌枝晶的生长，改善了锌的电沉积性能。

Three ductility degrees and corresponding force modification factors for different structure types are suggested in foreign seismic codes,and take into account overstrength factor varied.

国外多数抗震设计规范对各种类型结构建议了3档延性等级和地震力调节系数的可选择方案，并考虑了不同程度的超强，通过对我国9度区3跨6层钢筋混凝土框架结构进行的非线性动力反应分析，结果表明，赋予不同屈服水准的框架结构具有相近的超强水准。

Three ductility degree s and corresponding force modification factors for different structure types are suggested in foreign seismic codes,and take into account overstrength factor varied.

国外多数抗震设计规范对各种类型结构建议了3档延性等级和地震力调节系数的可选择方案，并考虑了不同程度的超强，通过对我国9度区3跨6层钢筋混凝土框架结构进行的非线性动力反应分析，结果表明，赋予不同屈服水准的框架结构具有相近的超强水准。

This shows that NIS has higher accuracy, good reproducibility, and satisfying the water content analysis and control requirement in the ammonia oximate process.

近红外法分析氨肟化反应液中含水相对误差范围在±3%之间，相关系数(R~2)为0.9737，相对标准偏差小于0.50%。

Multiple linear regression is the simplest way to build the relationship between the several explanatory variables and response variable. However, MLR often causes the estimated regression coefficients unstable or even unaccessible when the number of explanatory variables is more than that of objects. Especially, the explanatory variables are highly intercorrelated which called multi-collinear data. Therefore, many methods have been developed to analyze multi-collinear data, such as variable selection methods, ridge regression, principal components regression and partial least squares regression.

当要同时建立多个解释变数与反应变数间的关系时，最简单的方式是以复回归来处理，但是当解释变数数目远多於样本数，或者变数之间具有高度相关性时，会使得回归系数的估计变得不稳定甚至无法求得，这样的资料又称为共线性资料，在面临这样的资料时可以利用变数选取的方式降低资料组的维度，或者以脊回归、主成分回归及净最小平方回归等方法来灭种共线性的干扰。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。