喷雾冷却时沸腾临界热通量的实验研究

对水滴粒径较小的水－压缩空气混合喷雾流，在冷却高温水平传热面时的沸腾临界热通量进行了研究。确定了喷雾条件对临界热通量的影响和定量关系，对工业实际应用具有一定指导意义。     

STUDY OF THE HEAT AND HUMIDITY TRANSFER PROCESSES BETWEEN AIR AND WATER IN THE AIR WASHER

The processes of heat and humidity transfer between air and water are what to be studied mainly in the paper, we put forward some main factors which influence the processes of heat and humidity transfer in the air washer. We come to the conclusion that we can change these main factors to achieve different heat and humidity transfer processes and decide processes of heat and humidity transfer of air and water with the initial temperature of spraying water in the air washer. All these results can make things convenient for the air conditioning management.     

LAND SUPPLY AND HOUSING PRICE:THE CASE IN HONG KONG

In this study we examine the relationship between land supply and housing price, percentage of land premium in the total government revenue and housing price, with reference to Hong Kong from 1981 to 1994. To do this we employ the Granger causality method to test the underlying hypothesis whether Hong Kong Government adopt high land-price policy. We use the first difference of data to ensure the stationarity in time series with the help of augmented Dick-Fuller unit root test. The results of the paper suggest no strong evidence to support the view that the land control of the government has caused soaringly rising housing prices. The findings also apparently implicate that the government has the revenue-maximizing behavior which is consistent with efficient allocation of resources.     

纺织品静电场强衰减的数值计算与实验研究

对服从欧姆定律和在高场强下不服从欧姆定律的纺织品利用计算机进行数值计算与模拟并进行实验研究.结果表明无论电流密度与电场强度之间为何关系.不同初始场强的衰减曲线都不会发生交叉(Cross-Over)现象,若电流密度不仅与任意时刻的场强有关而且还与初始电场有关则会发生交叉,计算结果预示在某种特殊电场范围内时可能发生双交叉(Double Cross-Over)现象.数值计算结果与实验结果对比显示两者符合得较好.     

φ800钼合金冷硬球墨复合铸铁轧辊残余应力的测试分析

在确定φ800钼合金冷硬球墨复合铸铁轧辊残余应力的测试方案之后,对轧辊铸态、人工时效、自然时效后不同位置及距表面不同深度等测点进行了大量的测试工作,并对人工时效、自然时效对轧辊残余应力的影响结果进行了分析.     

枸杞组织培养的培养基配方优化试验

通过对枸杞组织培养的培养基部分成分的改换,发现用普通白砂糖代替蔗糖、自来水代替重蒸水、回收琼脂代替实验用试剂级琼脂,并去掉肌醇,对枸杞分化苗的增殖、生根无明显影响,可大幅度降低枸杞组培苗的成本.