化学过程

The purpose of this thesis is to apply the catalytic distillation technique to the hydrolysis of methyl acetate by breaking through the limitation of chemical equilibrium for getting high conversion of hydrolysis.

本论文的目的是将催化精馏技术应用于醋酸甲酯水解反应过程，以期突破化学平衡的限制而获得较高的水解转化率。

Otolith microstructure and microchemistry studies have revealed various aspects of their early life history that relate to their oceanic larval migration.

耳石微结构和微化学研究已经揭示了影响它们洄游过程中早期生活史的各种影响因素。

The present study is to use Pacific tarpon as a model animal to validate if DGIs is deposited normally during metamorphosis and their otolith microstructure and microchemistry are also examined.

本研究以大眼海鲢为模式动物，探讨其变态过程中日周轮形成的规律性以及耳石微细构造和微化学的变化情形，以便提供大眼海鲢自然生活史及洄游环境研究之参考。

The influence of acute and long-term motion on the metabolism of microelement zinc and copper in organism are discussed.

锌、铜作为酶的辅基在运动过程中发挥着广泛而重要的作用。近几年，生物化学、运动医学及生理学界对在运动训练中补充微量元素能显著改善运动成绩这一概念发生了兴趣。

In comparison with the same products produced in the developed countries, the lower stress-rupture life at elevated temperature of steel T91 produced in our country is possibly due to the few knowledge of the chemical composition control, especially the minor element control in this steel.

我国在T91钢管的研究和开发过程中，对其化学成份的控制、尤其是钢中微量元素的作用缺乏认识，没有形成相应的工艺软件技术作为保证，因而与发达国家同类产品相比，国产T91钢管在高温长时持久性能方面存在着明显的差距，达不到国际水平。

Of all materials available, calcium phosphate cement is an important biomaterial for hard tissue repair because of its chemical and crystallographic similarity to the carbonated apatite in bones and has received considerable attention. CPC consists of a mixture of fine particles of calcium phosphate salts, the CPC powder can be mixed with water to form a thick paste that can conform to osseous defects to form degradable hydroxyapatite, therefore, CPC's moldability, together with its excellent biocompatibility and osteoconductivity, make it a highly desirable material for orthopaedic repair.

磷酸钙骨水泥是一种非陶瓷型羟基磷灰石类材料，生物学特性与骨的化学组成相似，其良好的生物相容性和骨传导性引起人们的广泛重视，同时具有可吸收性，良好的蛋白亲和性，可复合骨形成蛋白而具有骨诱导性，制备简便、固化迅速、易塑形、在结晶过程中不产热等许多明显的优势使其广泛用于骨缺损修复、骨强化和骨替代。

According to the electrophilic substitution of α-Allocryptopin by ICl, it can be suggested that there are competitions of n-donors (such as N and O atom occurred in alkaloid or solvent molecules) with the conjugated π system in alkaloid molecule for iodine monochloride when charge-transfer complexes are formed, which may block the formation of pre-reactive π-complex intermediate, and thus suppress the electrophilic substitution.

这一方法标记过程简便，标记产物富集于有机相，易于进一步纯化，其放射化学纯度接近95%，标记率超过70%；ICl与α-别隐品碱的亲电碘化反应结果表明，生物碱底物或溶剂分子中的N、O等n电子给体可能与亲电试剂形成电荷转移络合物，竞争芳香亲电取代反应π络合物反应前体的形成，从而抑制碘化反应的发生。

Like its commercial counterparts, his process captures carbon dioxide gas by dissolving it in a solution containing the chemical monoethanolamine or a related amine.

像其商业对手二氧化碳气体的过程中，他夺得了解散它含有的化学溶液胺乙醇胺或相关。

Based on the system method and multivariate statistics, the changes of soil quality during soil formation on expressway slope are evaluated.

综合考虑了土壤物理、化学和生物因子，建立了土壤质量综合评价指标体系，并利用多元统计方法，对人工植被建立过程中土壤质量的变化进行了综合评价。

The adsorption isotherm of neptunium on silica gel correspond to the form of Langmuir isotherm. According to Clausius-Claperon equation,from the slope in InKd vs 1/T plot,adsorption heat could be estimated. From the data of adsorption heat it is concluded that the adsorption of neptunium on silica gel in nitric acid solutions belongs to chemical adsorption and the adsorption process is an endothermic reaction.

三种价态的镎在硅胶上吸附的等温线符合兰格缪尔吸附等温线的形式，是单分子层吸附；根据克劳修斯-克拉柏龙方程，以1nKd对1／T作图，通过直线斜率计算出吸附热，从吸附热的数据可判断三种价态的镎在硅胶上的吸附属于化学吸附，是吸热的过程；对NpOV）、Np和Np（VD在硅胶上的吸附进行了比较，提出了三种价态的锋在硅胶上吸附的机理。

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。