Therapeutical effect of Shengmaisan is determined by the interaction among the three herbs

Shengmaisan is a recipe of traditional Chinese medicine, which is composed of three herbs. The interaction among the components from the three herbs of Shengmaisan is investigated using FT-IR, Matrix Assistant Laser Desorption/Ionization Time of flight mass spectrometry (MALDI TOF MS) and TEM observation. Interactions among various components from different herbs cause enhancement of the solubility of some component and suppression of the solubility of others. Results from MALDI-TOF MS show that some components found in the decoction from a single herb disappear when different herbs are decocted together. On the other hand, new substances are produced when two and/or three herbs of Shengmaisan are decocted together. TEM showed that vacuoles formed in the decoction from two and/or three herbs of Shengmaisan but did not occur in any decoction from a single herb. This result provides us direct evidence that the solubilized structure is formed by the interaction among the components from different herbs. This knowledge helps us to understand the therapeutical effects of traditional Chinese medicine.     

基于CSD量化的数字滤波器的设计

数字滤波器在数字信号处理中占有举足轻重的地位。针对当前滤波器资源消耗大的问题，仔细研究了基于CSD（Canonic Signed-Digit)量化的滤波器设计方法，并对以往的CDS量化过程进行了改进，提出了一种降低滤波器运算量的改进方法，给出了设计基于CSD量化的滤波器的参考意见。仿真结果表明：改进后的算法对滤波器频率特性有一定改善，系统硬件实现时的存储资源也有所减少。     

Intelligent Integrated Control of Underactuated Mechanical Systems with Second-order Nonholonomic Constraints

This paper describes an intelligent integrated control of an acrobot, which is an underactuated mechanical system with second-order nonholonomic constraints. The control combines a model-free fuzzy control, a fuzzy sliding-mode control and a modelbased fuzzy control. The model-free fuzzy controller designed for the upswing ensures that the energy of the acrobot increases with each swing. Then the fuzzy sliding-mode controller is employed to control the movement that the acrobot enters the balance area from the swing-up area. The model-based fuzzy controller, which is based on a Takagi-Sugeno fuzzy model, is used to balance the acrobot. The stability of the fuzzy control system for balance control is guaranteed by a common symmetric positive matrix, which satisfies linear matrix inequalities.     

一类新型环型笼状化合物—瓜环的合成分离新方法研究

报道一类新型环型笼状化合物-瓜环的合成及分离新方法。该方法具有原料易得、成本低廉、操作简便等优点。     

豇豆属3种植物染色体的核型比较分析

采用去壁低渗火焰干燥Giemsa染色法,对小豆、绿豆、豇豆3种豇豆属植物核型进行了研究.结果表明,3种植物的染色体核型公式均为2n=2x=22=18m 4sm.所不同的是小豆和绿豆两条sm染色体分别为第2、3对,而豇豆的sm染色体则为第2和第6对.按照Stebbins核型分类方法,细胞类型均为2B.3种植物的染色体相对长度组成各不相同.     

降水对徐州地区冬小麦生产的影响

降水过多或过少引起的湿害、干旱是影响徐州地区冬小麦产量的重要因素．对徐州地区1990～1999年的降水量与小麦单产间的关系作回归分析，结果表明徐州地区冬小麦的气象产量与当年3～5月的降水总量呈负相关关系．     

烧结温度对细晶粒Ti(C,N)基陶瓷组织和性能的影响

采用真空烧结工艺制备超微、纳米复合Ti(C，N)基金属陶瓷．研究了烧结温度对超微、纳米复合Ti(C，N)基金属陶瓷的显微组织、性能的影响，并用SEM观察试样的断口形貌．结果表明，随着烧结温度的升高，陶瓷材料的显微组织逐渐变得均匀致密，晶粒长大不明显，环形相逐渐变得完整；当烧结温度超过1450℃，晶粒会明显长大，环形相变厚、变脆，导致材料的性能下降．进一步分析表明，超微和纳米复合Ti(C，N)基金属陶瓷的最佳烧结温度分别为1410℃、1450℃．     

壳聚糖在膜分离上的应用

膜分离是工业上能耗最低的一种分离过程，选择合适的膜材料和制膜工艺，一直是分离膜研究的核心．随着全球新材料的开发朝着环境友好材料方向的发展，壳聚糖作为一种无毒、无污染、可生物降解的天然高分子，受到了国内外学者的广泛关注．文章综述了壳聚糖在反渗透膜、超滤膜、渗透-蒸发膜和气体分离膜上的应用及其研究进展．     

地表水的臭氧化处理研究

对地表水臭氧化的效果进行研究。臭氧氧化反应所需的时间较短，在2min之内反应基本完成。臭氧处理地表水后，水质可以产生显著的变化，除了直接降低CODMn，负荷、芳香族有机污染物的含量、有效杀灭藻类外，还可通过溶解氧的增加及水的可生化性的增强来改善水质。     

模糊控制在机器人柔顺装配中的应用

提出了一种模糊柔顺的控制方法来控制机器人的装配作业，本方法不需要装配作业的模型参数，省去了大量的计算，并且在控制过程中不需要引入受力信息的变化量，实验证明，这种方法实用性强，实时性好。