二十七点九态控制器及其三阶对象仿真分析

介绍二十七点九态控制器的模型和控制作用。此控制器将相空间分为二十七个工作区域，而被控对象由九条不同规则控制。在此控制器作用下对不同的三阶对象进行稳定性仿真分析及其正弦跟踪分析，可得出结论：无论三阶对象是否稳定，在此控制器作用下对于不同的三阶对象可以达到满意的控制效果。     

苏州太湖地区现代气候灾害演变初步分析

根据苏州气象资料和太湖水情资料分析，１９８０年以来，太湖地区气候灾害演变的特点表现为隆冬偏暖、初夏高温、盛夏偏凉等气温异常的频度明显上升，降水仍持续４０年准周期变化，１９８０年至１９９０年初雨水异常偏多，特大洪涝连续出现，是一个气候异常的多灾时期。     

Growth,development, feeding preference,and food consumption and utilization by tobacco hornworm on tobacco mosaic virus-infected and non-infected tobacco leaves

Summary Plant disease may cause a variety of changes in plants which influence their suitability to insect herbivores. The reported physiological changes in tobacco due to infection by tobacco mosaic virus have the potential to influence the feeding, growth and behavior of the tobacco hornworm,Manduca sexta. However, feeding on foliage of systematically infected plants had no statistically significant effects on development time, mean pupal weight or the amount of foliage consumed by 4th instars. Although an initial preference was exhibited by larvae for healthy leaves after about 72 h no differences were observed. These results do not support the results of previous research on the influence of tobacco mosaic virus-infected plants on the tobacco hornworm.Scientific contribution No. 8130, article No. A-5071, of the Maryland Agricultural Experiment Station, Department of Entomology     

硫酸系统LD型电除尘器的运行与改进

介绍了11万t／a硫酸系统LD型电除尘器的结构、运行和改进情况，分析了烟气温度超温、烟气成分失控、电场压力变化等对电收尘器的影响，提出了针对性的控制措施，并根据实际情况对部分设备进行了改进。     

植物微丝骨架研究进展

文章就植物花粉管、保卫细胞中微丝骨架以及微丝骨架与信号转导的一些研究进展作了简要介绍 .     

充分开发利用农林副产品搞活农村经济

本文概述了我省农、林副产品的丰富资源及其开发前景,认为利用木屑、棉子壳、稻草、蔗渣等大力开发食用菌生产,是一种潜力巨大的再生性农业,可使农村尽快富裕起来.利用饼、粕及其他副产品做饲料,利用轻工业、食品工业的副产品做原料,发展蛋白质饲料生产,前景十分可观.     

APPLICATION OF THE COLLAGENOUS FIBER FROM THE SOLID WASTES OF LEATHER FOR PAPERMAKING

INTRODUCTIONThe quantity of the solid waste of leather is very large. Every year, there is more than 500,000-ton solid waste of leather to be put out in the world. The main components of these are collagen that may be 80%, and Cr3+ that may be 4%. In recent years, there are many the processing techniques for these solid waste. But the methods of handling for waste and the development of products are still limited, because the methods are expensive and the products are low additional valu…     

我国首台核电站模拟器计算机的升级和软件移植

本文介绍了１９８５年我国从美国引进的第一台全范围核电站模拟器，由于计算机的升档所带来的整套拟器软件系统的移植工作。文中介绍了该模拟器的硬件和软件的主要结构，并着重介绍了软件移植过程中遇到的主要问题和解决这些问题的方法。