综合案例教学在计算机教育中的探索应用

本文从个人实际教学的角度出发,探索综合案例新型教学模式在计算机软件教学中的应用。     

Scale-dependent elastic response of closed phospholipid bilayers to transmembrane molecular pumping activity: a key for exo-endocytosis physiological process

Summary The question is asked on the physiological role of the universal molecular biological function activity of lipid transmembrane translocation in living-cell membranes. The elastic response of closed bilayers to phospholipid translocation is theoretically found to be scale dependent, leading to vesiculation for plasma membrane characteristic-size bilayers (R _m≈10 μm), and to dilation strain for endocytic-vesicles characteristic-size bilayers (R _m≈0.1 μm). Both vesiculation and dilation effects are experimentally proved. On the basis of this scaledependent behaviour, it is argued that transmembrane pumping activity could control both the vesiculation and the fusion processin vivo, namely the exo-endocytic cellular-membrane traffic process itself. Paper presented at the I International Conference on Scaling Concepts and Complex Fluids, Copanello, Italy, July 4–8, 1994.     

Solubilization of active molecules in microemulsions for improved environmental protection

Various industries including food and pharmaceuticals are sharing increasing interest in microemulsions. Also, one can demonstrate that solubilization of active materials within the core or interface of microemulsions may have environmental benefits.

In this work, we report three examples of new microemulsion formulations specially designed to be capable of solubilizing active materials and protecting the environment from the emission of hazardous matter or protecting sensitive molecules from the detrimental effects of the environment.

In the first example, fire-resistant ingredients were incorporated in hydraulic fluids based on water-in-oil (W/O) microemulsions and their typical characteristics were described. In the second example, five-component oil-in-water (O/W) microemulsions were designed to solubilize lycopene and protect it from exposure to light. In the third example, a friendly solvent (butyl lactate) was microemulsified to form nanosized liquid droplets capable of solubilizing bromine-based bactericide formulations of sophisticated wood preservatives.

The new vehicles exhibit a very significant solubilization capacity and can be applied in aqueous media. In the last example, the active matter may be triggered when demanded and the release will be followed by film formation.     

含受控源多端网络导纳矩阵分析

本文简要介绍电子电路矩阵分析法的一般原理,并通过实例说明它的分析过程。     

汽车尾气催化处理器的中毒状况分析

使用北京正负电子对撞机国家实验室(BEPC)同步辐射装置,将光束限制在20×20μm~3的范围内,进行X射线荧光分析研究使用过的汽车尾气催化处理器中活性元素Co,Pt,La,Sr及侵袭元素Pb,Zn(即中毒元素)的分布状况。实验结果表明,中毒元素分布在处理器的表面大约30μm的范围内,基本上没有进入体内,而活性元素分布在体内。中毒元素含量沿排气方向递减。     

有源网络的拓扑分析

本文从把一个有源网络表示成电流图和电压图的观点出发,推导出双口网络的网络函数的拓扑计算公式,并对求电流图和电压图的公共树的算法作了改进。     

活性粉状白钨酸与十聚、六聚及其他多聚钨酸盐的联系和应用

本文扼要总结了作者近年来关于活性粉状白钨酸与十聚、六聚钨酸的工作,包括它们的制备、分离及相互转化。聚钨酸有机铵盐的光敏性,活性粉状白钨酸用于合成众多新化合物,对三价钨的簇合物以及从WO_4~(2-)转变到黄钨酸系列过程的推测等也给予了相应的评述。     

二阶节有源RC滤波器的最佳电路形式

本文根据对3种二阶节有源RC滤波器理论分析的结果作了机助分析和实验,比较三种滤波器国ω_O的偏差和Q的灵敏度及偏差可见,CAB滤波器性能最佳。     

化学反应速度和活化能实验的改进

用K2S2O8代替不稳定而易分解的(NH4)2S2O8，或用氨水中和已分解显酸性的(NH4)2S2O8，而使实验结果满意。并将试剂用量减到原试剂用量的1／2和1／4仍能得到非常好的效果，从而达到对该实验的进一步改进。