锂离子电池正极材料LiCu0.05Mn1.95O3.9F0.1的结构与电化学特性

以溶胶-凝胶法合成了阴阳离子复合掺杂尖晶石型锰酸锂正极材料LiCu0.05Mn1.95O3.9F0.1,XRD表征合成产物具有良好的尖晶石结构;SEM测试表明所合成产物的颗粒达到了亚微米级,且分布均匀,形貌较好.以该物质作为锂离子电池的正极材料组装成扣式电池,经充放电循环测试可知 LiCu0.05Mn1.95O3.9F0.1材料比LiMn2O4正极材料能够更好地抑制电池的可逆容量在充放电过程中的衰减,循环性能有了很大改善,表现出很好的电化学可逆特性.     

PIC单片机在产品开发中程序设计的探讨

对PIC单片机在产品开发中的程序设计进行了分析,并详细讨论了PIC单片机程序计数器(PC)和串口中断数据接收处理程序的设计,对后者给出了部分程序和流程图.     

IEEE802.16e跨层切换的性能分析

目的为了提高切换性能,将快速分层移动IPv6(F-HM IPv6)应用到IEEE802.16e中提出了一种新跨层切换方法。方法通过将MAC层切换和IP层切换有效结合,使MAC层切换和IP层切换交叉进行。结果该方法与现有的切换方法相比,具有更小的切换时延和服务中断时间。对不同的切换方法的数据传输时间进行了分析,不同的参数对数据传输时间有不同的影响。结论该方法具有好的切换性能。     

Genetic study on the behavior of honeybees influenced by polyandry system

Within a honeybee population, due to polyandry, there are supersister and halfsister relations, thus many subfamilies exist. For the Chinese honeybee (Apis cerana cerana F.) a phylogenetic dendrogram has been constructed in which 4 subfamilies are clustered based on DNA fingerprint patterns. And it has been observed that each kind of workers is distributed to several dierent sub-families.     

Identification and characterization of Biomphalaria peregrina (Orbignyi, 1835) from Agua Escondida in northern Patagonia,Argentina

During a general malacological survey for freshwater gastropods in northern Patagonia, a population of Biomphalaria was encountered at Agua Escondida. Biomphalaria spp. are freshwater pulmonates of biomedical importance, uncommon in Mendoza Province, and often act as intermediate hosts for Schistosoma mansoni. By looking at both morphological and molecular characters, we describe a detailed process of identification and characterization of Biomphalaria peregrina from a location towards the extremity of its species range. A reference DNA ‘barcode’ is presented. As B. peregrina has been shown to be a permissive experimental host of S. mansoni, snails were also screened in the field for schistosomiasis and later in the laboratory using a novel polymerase chain reaction-based assay but no infections were found. Considering the transmission potential of this species, increased vigilance for intestinal schistosomiasis is recommended, especially if local environmental conditions become favourable for disease transmission, for example, through future climate change and intensification of irrigation.     

用I／O口实现电池电压线性检测

利用PIC16C62单片机的I／O接口和定时捕捉功能，来获取比较器产生电位跳变的时间；通过对RC充电特性曲线的计算，实现A／D转换。     

表面自由能参数表征氟-硅凝聚物系的酸碱性质

通过测定１２种已知酸碱性质的探针分子在不同凝聚物系表面吸附的净保留体积ＶＮ，根据ＶＮ～ｒｉ的关系式，计算了表面自由能参数ｒｉ＾ＬＷ、ｒｉ＾＋、ｒｉ＾－等一系列数据，以酸性作用参数ｒｉ＾＋和碱性作用参数ｒｉＡ＾－相对大小为指标，确定物质表面酸碱性质，该研究为探讨聚合物增强以及偶联、复合机理开辟新的途径，对于开发和选择粘合材料具有一定的实际指导意义。     

Primary function of microcontroller EM78P458 and research on applications of its ADC on chip

The build-in structure of microcontroller EM78P458 and its application in supervising the water level of solar water heater are introduced. The circuit and the flow chart of AD conversion program are depicted. In the end, the design of assembly language program about the AD conversion is introduced. Foundation item: Research on electromaganetic scatter character of very complicate object (69571021) Biography: HUANG Ji-wu (1939-), male, Associate professor. Research direction: control with microcomputer and intelligent system.     

可测函数列关于谱测度几乎处处收敛的若干特征

本文把可测函数列几乎处处收敛的几个重要特征推广到谱测度的情形，并证明了它们之间的相互等价性．     

机器鼠走迷宫的优化路径算法及实践

提出了对树型迷宫的优化路径算法,用坐标法解决了“死胡同”的处理和最短路径的判断与选择问题,用PIC16F877单片机完成电路的设计与制作。