化学过程

There are two kinds of spinels in a granulite terrain of Yushujgou, South Tianshan Mountain. One occurs in the intermediate and basic granulite units and is characterized by enriched Al and poor Cr, belonging to Al_spinel. In thin sections it shows dark green color and subhedral to anhedral form, and coexists with other metamorphic minerals, suggesting a neogenic metamorphic mineral of granulite facies. The other occurs in the adjacent ultramafic rock unit, belonging to Cr_spinel. In thin sections, it is dark brown in color and is scattered among olivine, clinopyroxene and orthopyroxene as irregular grains, indicating a stable residual mineral in the process of granulite facies metamorphism.

新疆榆树沟麻粒岩地体中发育两类尖晶石：一类见于中、基性麻粒岩体中，其化学成分富 Al贫 Cr ，属铝尖晶石，镜下为深绿色，呈半自形至他形粒状，与其它变质矿物共生，表现为麻粒岩相的新生变质矿物；另一类发育在空间上与麻粒岩体紧密相邻的超镁铁质岩体中，为铬尖晶石，镜下为深褐红色，呈不规则粒状分布于橄榄石、斜方辉石和单斜辉石之间，为麻粒岩相变质过程中稳定的残余矿物。

This section is devoted to the analytical evaluation of solutions used in the natural gas sweetening.

化学分解是炼气厂工作中的重要环节，本章主要分析天然气脱硫过程中使用的溶剂

In this paper, nanopowders of rare earth oxides and tungsten were prepared and 0-3 type nano-composit rare earth tungsten thermionic emission materials were fabricated with novel technics. The raw material selection, preparation technic parameter, structure, physical and chemical characteristic, the rare earth distribution and the emission behavior were studied. The influence between the active layer and the thermionic emission performance, rare earth elements diffusion and distribution along depth were investigated in detail. The surplus RE formation and the electron transfer were discussed in theoretically. The thermionic emission current density of the single surplus RE on the active layer was educed. We adopted "liquid-liquid mixing, freeze-drying and two stage-reduction" working step firstly to produce the RE-W nanopowders including La-W powder, Ce-W powder and Y-W powder.

本文采用细化显微组织的新工艺，制备了纳米稀土钨粉末和0-3型纳米复合稀土钨热电子发射材料，探讨研究其原料选择、制备工艺及参数、结构特征、物理和化学特性、稀土分布均匀性、以及热电子发射特性；系统研究了稀土元素的高温扩散情况、高温状态下活性层中稀土的纵向深度分布、以及表面活性物质和活性层厚度对热发射性能的作用；从理论上分析阐释了超额稀土的形成及其电子的传递过程；并从理论上推导了活性层中单个超额稀土的热电子发射电流密度。

This study shows thermomagnetic analyses, petrographic measurements and soil chemistry methods can be combined to obtain a better understanding of the sequence of magnetic mineral alterations during thermal treatment and of the pedogenic mechanism responsible for the susceptibility enhancement.

本文以热磁分析手段为主，结合土壤化学和X射线衍射等非磁学方法，系统研究了黄土高原全新世风成沉积在热处理过程中磁化率的变化特征和磁性矿物的转化序列，讨论了主要磁性矿物的成因，并探讨了特定温度范围内磁化率变化特征的古气候意义。

The calculation methods in the chemical titrimetry after the promulgation of the legal unit of measurement are mainly introduced.

主要介绍法定计量单位颁布以后，化学滴定分析的计算方法，同时推荐一种更具实用意义的通用计算方法，并对其推导过程进行了详细的阐述。

For the development of protein drugs and the research of biochemistry, it is significant to probe the interaction between chitosan and protein, and to observe changes of adsorption when both of them contact at interface. Total internal reflection fluorescence spectroscopy is an effective technique to investigate protein adsorption at interface.

壳聚糖对蛋白质有良好的亲和能力，研究蛋白质与壳聚糖在界面上的相互作用、理解蛋白质与壳聚糖分子在界面接触时的吸附过程变化对蛋白药物的开发和生物化学研究具有非常重要的意义。

Surgical construction of a respiratory opening in the trachea .

电流引起的化学键的分解或溶解过程。

The mechanism studies on the atomic oxygen effects over surface materials become rather difficult due to the fact that the interaction, stemming from a highly complex environment in LEO, where the atomic oxygen are equipping with high translational kinetic energy and strong oxidizing characteristics, may induce complicated physico-chemical processes.

然而，由于空间环境高度复杂，以及环境中原子氧具有高平动能和高度活泼的化学特性，空间材料的原子氧效应呈现复杂的物理化学过程，给该效应的机理性研究带来严重困难。

The acid hydrolysis process during synthesizing silica materials with natural wollastonite, which is of a triclinic cell, was investigated with XRD and chemical analysis methods.

采用 XRD和化学分析方法研究了三斜晶系普通硅灰石制备二氧化硅材料中的酸解过程。

3At%. Based on the measurement of the grain size, phase contents and their composition, the composition of the trinary interface phase was determined to be 〓, with the thickness of interface phase about 1. 3nm, corresponding to 4～5 atomic layers, and with a lower atomic density as well as a high degree of disorder. In the case, the obtained nano-structure remains stable, unchanged against the continued electropulsing.

在晶粒尺寸和相含量及其成分测定的基础上，确定出三元界面相的化学成分为〓，界面相的厚度约为1.3nm，相当于4～5个原子层，而且具有低原子密度和高无序度，此时，纳米结构相对稳定，在延长的电脉冲处理过程中基本保持不变。

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。