凝胶萃取过程中的溶质分配和凝胶滞胀

在Flory理论的基础上,用凝胶网络弹性自由能的标度关系推导分析了滞胀度和分配系数的表达式及其影响因素。结果表明很多情况下不能用凝胶在纯溶剂中的平衡溶胀度来估计凝胶萃取的浓缩能力。理论上还预示进入凝胶网络中的溶质量随凝胶致密程度的增加和溶质分子尺寸的增加而减小,这表明凝胶网络对大分子溶质的排斥是一种热力学效应。     

退耕还林中地区利益分配问题

从科斯定理入手，利用“流域发展权”概念和博弈论基本原理，分析当前退耕还林中的地区利益分配问题．认为退耕还林成本应该更多的由流域的中下游地区(主要指东部地区)承担，而不是如目前，实际上主要由中上游地区(主要指中西部地区)承担。     

学习毛泽东财政思想克服当前的财政困难——纪念毛泽东同志诞辰100周年

今年是毛泽东同志诞辰100周年。重新认真学习毛泽东财政思想，对于我们克服当前的财政困难，进一步明确我国财政工作的指导思想，深化财政分配制度改革，具有重要的现实意义。     

三峡工程水电站压力管道和蜗壳技术结构型式的选择及论证

The developing process of simulation technology is discussed in view of its development, maturation and further development.The applications of simulation technology in the fields of national economy are introduced. Finally, the level and status quo of simulation technology home and overseas are analyzed, and its future trend in the new century is presented.     

Reliability of Reinforced Concrete Buildings During Constructio

The safety analysis of reinforced concrete buildings during construction should be based on the comprehensive understanding of loads, load effects, structural resistance, and available safety index of the structure. This paper analyzes the characteristics and probabilistic models of resistance, loads, and load effects. A method was developed to calculate the probability of failure based on Monte Carlo simulation and models proposed in previous articles. Construction examples were used to analyze the influence of live load on the probability of failure. The results show that when the live load increases, the maximum probability of failure increases with acceleration. The results suggest that the construction live load should be carefully addressed during construction.     

吉尼系数逐步扩大的原因分析

我国吉尼系数偏大反映了我国收入分配领域的问题与矛盾，也带有我国经济发展过程中种种不和谐的烙印。目前吉尼系数已超过国际公认的警戒线，收入差距的扩大打破了原有的大锅饭、平均主义，带来了劳动生产率的提高。但收入差距的扩大也带来了种种问题，不利于改革的深入发展和社会的稳定。