浅析铝箔的基本性能与软包装制品的质量

初步分析了铝箔的基本性能与软包装制品质量的关系, 提出了预防质量问题一些解决办法。     

活性炭自硫脲溶液吸附金的氧化还原机理探讨

采用X射线衍射、元素分析及显微技术等方法,研究了活性炭(AC)自溶液中吸附金硫脲络合物的机理。研究发现,溶液中络合离子被活性炭表面的≥C-OH和≥C-H官能团还原为零价金Au(0)而吸附;提出了氧化还原吸附机理可能的步骤,并用Nernst公式证明该氧化还原吸附过程为自发过程。     

~(99)Mo-~(99m)Tc平衡源中~(99m)Tc和~(99)Mo强度比测定

本文用4πβ-γ符合方法中的外推吸收法测定了~(99)Mo-~(99m)Tc平衡源中的总“β”强度,用准确标定过的~(99m)Tc标准源刻度好效率的S-80多道高纯锗γ谱仪测定平衡源中~(99m)Tc的绝对强度,从而测定了~(99m)Tc和~(99)Mo的强度比。结果为0.974±0.0023。并将结果和编评值比较,为~(99)Mo的绝对标定提供了~(99m)Tc的修正量为0.1088±0.0023的实测值。     

溶胶—凝胶法制备莫来石膜的研究

以正硅酸乙酯（ＴＥＯＳ）和硝酸铝为原料,用溶胶—凝胶法制备莫来石膜。讨论了溶胶制备过程中ＨＣｌ、ＨＮＯ３和ＨＡｃ等催化剂的作用,溶胶的形成机理,以及莫来石膜的结构     

基于降半Г分布函数的自适应遗传算法

针对遗传算法中交叉概率和交异概率难以选取的问题,提出一种新自适应遗传算法;利用降半Г分布函数对交叉概率和变异概率事例上参数随基因串的适合度值而变化。     

永磁拖拉机起动机电机设计试验研究

从拖拉机起动机的负载特性出发,分析了拖拉机起动机电机由电励磁改为永磁的必要性,并以永磁拖拉机起动机电机样机与原电励磁起动机电机对比试验分析为重点,讨论了这一改变的可行性,最后辅有电磁场分析,得出永磁拖拉机起动机电机设计计算的要点。     

四维空间中退化椭圆型方程组的混合边值问题

运用退化椭圆型方程理论及复方程边值问题解的存在理论证明：对于某类四维空间中退化椭圆型方程组的混合边值问题,在一定条件下其解是存在的．     

The structured heat integrated distillation column

This paper describes a unique, proof of the principle test facility and the results of a study carried out to provide experimental evidence needed to properly asses the techno-economic feasibility of heat integrated distillation column (HIDiC) utilizing structured internals to enhance both heat and mass transfer. The plate-packing configuration using structured packing exhibited a superior performance in comparison with the HIDIC based on the plate-fin heat exchanger. Experimental evidence shows that the mass transfer and heat transfer efficiency increase pronouncedly with increasing throughput, which however is accompanied by an increasing pressure drop per stage. Simulation of an industrial scale plate-packing unit revealed that an even better performance can be obtained by increasing the volumetric thermal load via further optimization of internals.     

High temperature and high pressure H n.m.r. and e.s.r. studies on coal liquefaction reactions

Changes in chemical reactions during coal liquefaction of Yallourn brown coal and Akabira bituminous coal were monitored by using high temperature and high pressure ¹H n.m.r. A simple high temperature and high pressure e.s.r. cell was constructed and the variation in concentration of free radicals during coal liquefaction reactions was monitored under the same experimental conditions as for n.m.r. With the liquefaction and coking reaction, typical spectra of n.m.r. and e.s.r. were obtained and could distinguish the reaction steps: swelling; liquefaction; coking. The combination of high temperature and high pressure n.m.r. and e.s.r. is promising to the chemistry of coal liquefaction reactions.     

Scaled runge-kutta-nyström methods for the second order differential equation ÿ = f(x,y)

New Runge-Kutta-Nyström algorithms are presented which determine an approximation of the solution and its derivative of the second order differential equation ÿ = f(x,y) at intermediate points of a given integration step, as well as at the end of each step. These new algorithms, called scaled Runge-Kutta-Nyström (SRKN) methods, are designed to be used with existing Runge-Kutta-Nyström (RKN) formulas, using the function evaluations of these methods as the core of the new system. Thus, for a slight increase of the cost, the solution may be generated within a successful step, improving so the efficiency of the existing RKN methods.