化学过程

On the basis of the data obtained from the cam-type plastometer, four prediction models including the BP, Elman, RBF and GRNN neural network prediction models were established, which corresponded to the relationship between the deformation stress of nickel-chrome steel with chemistry elements, temperature, strain rate and deformation strain of the steel respectively. A comparative analysis for the prediction accuracy of the four models was obtained.

以凸轮式高速形变试验机进行的热模拟压缩实验得到的实验数据为基础，建立了热轧铬镍钢的变形阻力与其化学成分、变形温度、变形速度及变形程度对应关系的BP、Elman、RBF和GRNN 4种神经网络预测模型；并对4种网络的训练过程和预测精度进行比较分析。

In order to investigate the effect of IFN-γon the expression of TNF-αin the hypothala- mus-pituitary-ovary axisof RU486-induced aborted SD rats, RU486 was used to establish the abortion model, then the aborted rats were administrated with different doses of IFN-γintraperitoneal injection, the method of immunohistochemical ultrasensitive SP was us- ed to study the variation of positive TNF-αcells in hypothalamus, pituitary, ovary and uterus in normal pregnant group A, aborted model group B and three different doses of IFN-γgroup C,D,E. The main goal of this research was to study whether the low dose of IFN-γcould have a protective function to pregnancy and the mechanism of its function so as to provide morph- ologic basis for the scientific using of IFN-γin the process of animal abortion control.

为探讨IFN-γ对流产大鼠下丘脑-垂体-卵巢轴(hypothalamus-pituitary- ovary-axis，HPOA )TNF-α表达的影响，本试验用米非司酮(RU486)建立SD大鼠流产模型，通过腹腔注射不同剂量IFN-γ，采用超敏感免疫组织化学SP法(链霉素抗生物素—过氧化物酶法)，观察了孕13天(d13)SD大鼠正常妊娠A组、流产模型B组、不同剂量IFN-γC、D、E组下丘脑、垂体、卵巢、子宫TNF-α的表达变化，探讨低剂量IFN-γ对妊娠是否有保护作用及其作用机制，期望能为在妊娠过程中如何科学应用IFN-γ防止动物流产提供形态学依据。

Nanoparticle of an appropriate proportion were homogeneously dispersed in the PI matrix, and the interfacial adhesion between the matrix and the nanoparticle was hence strong owing to the high specific surface area and reactivity of the nanoparticle. Subsequently, the molecular chains of PI attained unchanged or even increased interaction at a proper mass fraction of the nanometer particle, which contributed to improve the wear-resistance of the nanocomposites.

采用PI的原位聚合填充方法，利用聚酰亚胺与无机纳米表面较强的相互作用（如静电作用、较强的范德华力、氢键甚至化学键的形成），用非水悬浮工艺制备了无机纳米/聚酰亚胺纳米复合材料，率先用大型分析仪器全面地表征了复合材料的结构，采用原位聚合填充法制备的聚酰亚胺复合材料中，无机纳米分散状态良好；无机纳米氧化物/聚酰亚胺复合材料的结构表征显示出PI有机相和SiO〓无机相之间形成了键联型复合体系，两相相互影响；在复合体系中，单相本体的结晶结构并未发生改变；在摩擦过程中纳米氧化物没有发生价态的转变；无机纳米氧化物的加入，提高了聚酰亚胺的耐热等级；适量纳米氧化物并不影响复合材料的机械性能， 2。

The chemical thermodynamic process and growth phenomena related to the MN PVT growth are discussed.

讨论了PVT法生长AlN晶体所涉及的化学热力学过程和现象。

The scavenging effect of the intermediate of Maillard Reaction on ·OH was studied by using chemiluminescence, and its effect on O2-· was studied by inhibiting pyrogallol auto-oxidation.

摘 要：用化学发光方法研究了以Maillard反应中间体清除·OH的作用，用分光光度法研究了中间体清除邻苯三酚自氧化过程中产生的O2-·的作用。

In this paper,the relation between the thermal endu- rance of insulation and the exposure temperature is analyzed from the point of view of chemical dynamics.

本文从化学动力学的观点分析了各种情况下绝缘的热老化寿命与温度的关系，通过二种绝缘漆的热老化试验研究了温度、热冲击、潮湿对热老化寿命的影响，并在涤纶薄膜的热老化过程中测定了电性与机械性能的变化。

They are periodical inspect and report rat's statas.chronic and acute raticide.

在控制鼠害过程中，采取定期监测与鼠情报告、急性灭鼠剂与慢性灭鼠剂、化学药物与物理器械、突击灭鼠与日常防鼠、重点杀灭与全面投药＂五结合＂的技术方法，鼠密度从交付使用后的32.46％下降到0.47％，并保持在3％以下；降低基建工地和外围环境的鼠密度、切断老鼠侵入和扩散的通道，是控制新客站鼠害的关键。

Based on a reactant fed to the process according to the stoichiometric coefficient s.

后者是基于供给过程的反应物质量按化学计量系数算得的。

Based on a reactant fed to the process according to the stoichiometric coefficients.

后者是基于供给过程的反应物质量按化学计量系数算得的。

Both the experimental results and theoretical analyses indicate that the remelting and breakup of the primary dendrites are induced by the chemical superheating of solid during recalescence rather than by the solid-liquid interface tension.

4实验结果和理论分析说明，初始枝晶组织的重熔瓦解是体系再辉过程中固相的化学过热引起的，固液界面张力作用下的重熔对组织形态的影响相对较小。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。