热力学

When the termination pressure in the reversible adiabatic expansion process is equal to that in the irreversible adiabatic expansion process, the external work in the former is equal to the expansion work, however that in the latter is less than the expansion work.

指出了文献[1]中关于闭口系统不可逆绝热过程分析存在的问题，认为闭口系统绝热膨胀过程对外所作的功等于热力学能降，而非膨胀功等于热力学能降。

Air-conditioning units must obey not only the first law but the second law as well.

空气调节装置不仅应遵守热力学第一定律，而且还应遵守热力学第二定律。

Recent progresses in thermodynamic study on the coordination of calixcrowns to alkali metal ions are introduced in the paper.

概要介绍了杯芳冠醚与碱金属离子配合的热力学研究方面的最新进展，较为系统地分析了选择性与热力学参数之间的相关性，得出了一般规律。

The solubility limit of element Ta in binary compound NiZr2 wasdetermined as 13.5 at% at the present experimental temperature.3 The investigation of the phase equilibrium relation arid the thermodynamic extrapolation of Ni-Cr-Zr ternary system at 1173 KThe isothermal section of Ni-Cr-Zr ternary system at 1173 K was determined and the phase equilibrium relation and their stability were analyzed and discussed.

同时，利用文献所报道的有关该体系的相关二元子系统的热力学信息成功地外推和预测了该三元系的热力学性质。

Thermal Physics: conduction, convection and radiation; black body radiation and energy quantization; ideal gas and kinetic theory; work, heat and internal energy; first law of thermodynamics; entropy and the second law of thermodynamics; Carnot cycle; heat engine and refrigerators.

热力学：传导、流及辐射、体辐射及能量量子化、想气体及理论、、及内能、力学第一定律、及热力学第二定律、诺循环、机和冰箱。

By studying the membrane preparation process for the typical membrane materials of polystyrene and cellulose acetate as well as a new type membrane material of polyvinyl butyral,the effects of operating parameters on the membranes structure are determined.By the study on the thermodynamics involved in the ternary systerms of ScCO_2/solvent/polymer and the calculation of theoretical ternary phase diagrams,the phase demixing behavior during the membranes formation by ScCO_2 induced phase separation process are described.By studying thermodynamics involved in the quaternary systerms of ScCO_2/solvent/additive/polymer,the effect of a low molecular weight additive on the quaternary phase diagram and dimixing speed are revealed.

通过对传统膜材料聚苯乙烯、醋酸纤维素及新型膜材料聚乙烯醇缩丁醛进行ScCO_2诱导相转化制膜工艺的实验研究，给出了操作参数对膜形态结构的影响规律；通过研究ScCO_2/溶剂/聚合物三元体系热力学问题，并计算出相应铸膜体系的三元相图，对ScCO_2诱导相转化膜制备过程的分相成膜行为进行了分析与描述；通过研究ScCO_2/溶剂/小分子添加剂/聚合物四元铸膜体系的热力学问题，并借助于四元体系理论相图计算的结果，分析了小分子添加剂对相分离过程的影响。

Theoretical Part: Through theoretical analysis of chemothermodynamics, combustion and engineering thermodynamics, factors that affect explosion limit were determined, which include temperature, pressure, spark ignition energy, electrode shape, direction of flame propagation and size of explosion vessel.

理论部分：根据化学热力学、燃烧学和工程热力学的基础理论，从本质上定性地分析了爆炸极限的影响因素，包括温度、压力、爆炸容器的大小、点火能量大小、以及火焰传播方向等，得出了这些影响因素对爆炸极限的影响规律，以确保实验有完整的理论基础指导；在此基础上本文提出了一种新的推算在常温常压下可燃性纯质和混合工质制冷剂爆炸极限浓度的理论方法，该方法由可燃性气体的化学组成来推算上下限浓度，不需要其它条件；对混合工质制冷剂，只要再知道混合配比，即可以推算出爆炸极限，使预测爆炸极限的工作更简单、方便。

The interfacial chemistry, synergistic effects and interfacial kinetics of thesynergistic extraction system D_2EHPA-MPA-Fe~(3+) have been studied, where MPA is amono-alkyl phosphate extraction with long carbon chain. D_2EHPA in the mixed extractionsystem strongly exhibits the effect on the thermodynamics of micella formation and interfaceproperties of MPA. Some thermodynamic parameters of micella formation were obtained.The interfacial adsorption behaviour of D_2EHPA is opposite to that of MPA. Theemulsification for single MPA and the mixed system was discussed. The synergistic effectswere found in this mixed extraction system. It is proved that the process of Fe~(3+) extractionfor non-mixed extraction system is controlled by chemical reaction, the controlling reactionoccurs at the interface, and the reaction rate equation is obtained.

本文研究了协同萃取体系D_2EHPA—MPA—Fe~(3+的胶团形成热力学、界面特性、协萃效应和界面动力学(动力学控制机制和反应速率方程)研究发现，混合萃取体系中的D_2EHPA强烈地影响MPA的胶团形成热力学和界面吸附行为，得到了胶团生成常数、胶团形成自由能和临界胶团浓度的热力学参数D_2EHPA和MPA具有相反的界面吸附行为研究发现D_2EHPA—MPA混合萃取剂体系对Fe~(3+)产生了协萃效应动力学和界面化学的研究结果还证实了非胶束混合萃取体系的Fe~(3+)的萃取过程是受化学反应控制的，控制反应发生在界面上

Chemical potential is an intensive property,which has important applications in the description of thermodynamic system with changeable components.

化学势是在研究多组分体系热力学关系中引进的一个重要的热力学概念，在热力学、物理化学及生物流体力学等学科中有着重要的应用。

Course Content: The Basic Laws of Thermodynamics, Thermodynamic Properties of Mass, Phases Equilibrium of One Gas System, Phases Equilibrium and Chemical Equilibrium of Gases System, Thermodynamics of Irreversible Processes, Description of Microstates, Boltzman Statistics, Bose-Einstein Statistics and Fermi-Dirac Statistics, Ensemble theory, The Statistical Theory and Fluctuation Theory for Nonequilibrium States

课程内容：热力学的基本定律、均匀物质的热力学性质、热动平衡判据、单元系的复相平衡、多元系的复相平衡和化学平衡、不可逆过程热力学、微观运动状态的描述、玻尔兹曼统计理论、玻色－爱因斯坦统计和费米－狄拉克统计理论、系综理论、非平衡态统计理论和涨落理论。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。