Phase behavior of supercritical CO2 microemulsion with food-grade surfactant AOT

Supercritical CO2 (scCO2) has drawn wide attentions as a cheap and efficient green solvent replacing the conventional organic solvents. These technological ap- plications increase rapidly especially in food-relative industry, such as extractions of beer h…     

基于MATLAB扩展HL-2ADAS数据处理的两种方法及其比较

介绍了HL-2A DAS数据处理软件中，实现数据处理与图形功能扩展的两种方法．一种是以MATLAB作为主要平台，以C Builder作为接口工具实现数据的复杂处理与图像处理．另一种是用C Builder作为主要平台，调用MATLAB引擎实现数据与图像处理．这两种方法是以MATLAB为主要工具，从不同的角度入手，采用了不同的编程思想．分析了这两种程序开发策略在HL-2A DAS中的运用情况及性能比较．     

凸轮机构的虚拟设计

针对滚子直动从动件盘形凸轮，利用Visual C^ 平台和开放式图形软件实现滚子直动从动件盘形凸轮任意运动规律的自动计算、自动绘图以及自动生成三雏动态模拟仿真模型。     

磁悬浮开关磁阻电动机径向力的动态解耦控制

基于基本电磁场理论 ,给出了磁悬浮开关磁阻电动机径向力与位置的模型 .针对模型具有非线性和强耦合的特点 ,对该模型进行可逆性分析 ,从而证明该系统可逆 .应用神经网络逆系统方法 ,设计其非线性控制器 ,将原来非线性强耦合的多变量系统解耦 ,转变成 2个位置彼此无耦合的线性子系统 ,应用线性系统理论容易对这 2个子系统进行控制 .仿真表明 ,系统具有良好的静动态性能 .     

城市土地集约利用潜力评价--以南京市为例

从南京市城市土地利用的现状分析人手，总结了南京城市土地利用的基本特征及存在问题；分析了南京市主城区土地利用具有的内在潜力，并就此提出了相应的建议和措施．指出在城市化进程中，土地利用应走集约化发展的道路，挖掘土地潜力，盘活国有存量土地，提高土地利用率．     

Approaches to prediction of impact of Qinghai-Tibet Railway construction on alpine ecosystems alongside and its recovery

With the aid of the Remote Sensing (RS) and Geographic Information System (GIS) technology, the ecosystem pattern and fragility distribution maps of the 50-km-wide zone along the Qinghai-Tibet Railway were compiled and by using the superimposition method, range, area and indexes of the impact of various engineering activities on the ecosystems alongside the railway were studied. By making reference to the ecosystem recovery process of the Qinghai-Tibet Highway, mechanisms of recovery of the alpine ecosystems alongside the Qinghai-Tibet Railway were studied and extents and rates of the recovery were predicted.The results indicate that the impact of the railway engineering on the Alpine ecosystem depends mainly on how much the original surface soil in the zone has been disturbed and how fragile of the ecosystem per se. Restoration of vegetation coverage and species abundance shows a significantly reverse relationship with disturbance of the original surface soil but an extremely positive one with the length of the restoration period and mean annual precipitation and annual mean relative humidity in the period and no obvious bearings with altitude and temperature. In sections with an annual precipitation over 200mm, as long as a certain percentage of original soil is left in situ, it takes only 30 years or so for biodiversity to get basically restored to the original level after the construction is completed but at least 45-60 years or more for vegetation coverage.     

函数极限与积分可交换的一个充分条件

研究了函数极限与积分可交换的问题，利用了平均一致收敛的定义，给出了一个比一致（R）可积性弱的充分条件。     

Generation of Linear and Parabolic Concentration Gradients by Using a Christmas Tree-Shaped Microfluidic Network

This paper describes a simple method of generating concentration gradients with linear and parabolic profiles by using a Christmas tree-shaped microfluidic network.The microfluidic gradient generator consists of two parts:a Christmas tree-shaped network for gradient generation and a broad microchannel for detection.A two-dimensional model was built to analyze the flow field and the mass transfer in the microfluidic network.The simulating results show that a series of linear and parabolic gradient profiles were generated via adjusting relative flow rate ratios of the two source solutions(R_L~2≥0.995 and _PR~2≥0.999),which could match well with the experimental results(R_L~2≥0.987 and _PR~2≥0.996).The proposed method is promising for the generation of linear and parabolic concentration gradient profiles,with the potential in chemical and biological applications such as combinatorial chemistry synthesis,stem cell differentiation or cytotoxicity assays.     

面向对象图形用户界面的设计与实现

在分析计算机用户界面开发方法和工具的基础上，提出了利用对象模型化技术开发图形用户界面的思想。根据此思想，设计并实现了一个面向对象的图形用户界面（ＧＵＩ）。     

普宁明华体育馆的声学设计

本文对普宁明华体育馆的建声和电声进行了统一设计．其中的一些设计思想对其他中型多功能体育馆也有参考价值．