Abstract:The oscillation of the solutions of a type of nentral equation with variable cofficients is investigated.The necessary and sufficient conditions of existence of nonoscillatory solutions and several new oscillatory criteria fo
Huang Shukun Zhang Zhiyuan Zhao Haiying Kuang Shaolin
Abstract:The adsorption of 1.4 butynediol at nickel electrode have been studied by differential capacity curves. Their differental adsorption characteristics at nickel and mercury electrodes were discovered. In comparison with adsorpti
Peng Chuwu Xiao Yanhong Zhong Qingchang
Abstract:The common technology for Pseudo FMS application engineeringP FMS Network's function, structure and design is introduced. This Network has been realized in the National Eight five key Project, which has extensive application
Abstract:Under definite conditions,comparing two linear models with linear equality constraints,some simple necessary and sufficient conditions is obtained.
Abstract:The countable compactness and sequential compactness for a de morgan algebra of topology are introduced.The relations between any two of these concepts and compactness are investigated.
Abstract:考虑一个广义时滞人口增长模型，获得了它的每个正解当ｔ→∞时趋于其正平衡点的充分条件。
Abstract:It has been proved that the uniform ultimate boundedness of solutions implies the existence of periodic solutions to the functional differential equation with finite delay,and hence an extension of Yoshizawa theorem on peri
Chen Xiaolin Feng Mang Fu Liping Zhang Qingying
Abstract:The time dependent theory is used to discuss the squeezing effect due to the disturbance from the outside. By adjusting the theoretical parameters, the squeezing properties are studied by numerical calculations. Meanwhile,
Liu Xichun Chen Zhengjun Liu Hui
Abstract:分析了二极管导通电压Ｖｏｎ及二极管两端并联电容Ｃ１对Ｅ类零电压开关整流器的影响，给出了该整流器在正弦电压源激励下的数学分析式及其数值解。
Abstract:利用ＳＵＰＥＲＳＡＰ软件对ＳＳ６Ｂ型电力机车主变压器下油箱在起吊、试验及机车行驶时的各种工况（五种）下进行了空间有限元分析。模拟试验工况的计算结果与实测位移、电测应力基本吻合；其他工况下的分析结果与与主变压器下油箱的实验失效情况相符。文末提出了主变压器下油箱结构的改进意见，可作为设计人员参考。
Chen Shengzong Chen Xin Chen Rui Chen Junyan
Abstract:采用氧化铁催化氯苄与甲苯的Ｆｒｉｅｄｅｌ－Ｇｒａｆｔｓ反应生成一苄基甲苯（ＭＢＴ）和二苄基甲苯（ＤＢＴ），当甲苯与氯苄的摩尔比为６：１，催化剂用量为每摩尔氯苄１．５克及１００℃下反应６小时时，产品收率达９５％。得到的ＭＢＴ和ＤＢＴ热稳定性好，操作温度范围广，无腐蚀性和怪味，是综合性能优良的导热油。
Tang Xun Deng Fengqi Zou Qiansheng
Abstract:The distribution of products of the chlorination in the presence of catalyst TPC 05 was studied.The effects of chlorination conditions on distribution of products were tested.Results showed that the degree of chlorination i
Cao Zhong Xu Dan Lin Huigai Yang Xiaohai Wang Binfeng Wang Kemin Yu Ruqin
Abstract:试验了５１种吸附涂层材料，发现Ｎ，Ｎ，Ｎ＇，Ｎ＇－四（２－羟乙基）乙二胺（ＴＨＥＥＤ）涂膜的镀银压电晶体传感器对ＣＯ２具有灵敏响应。当涂膜量为９１μｇ时，传感器的检测范围宽，检测限低至１００×１０＾－６（Ｖ／Ｖ），且具有可逆性、重现性良好和响应快等优点，变压器油中的其它溶解气体如一氧化碳、氢气、甲烷、乙烷、乙烯、乙炔等干扰小。此外，将该传感器用于模拟变压器油混合气中的ＣＯ２含量的测定，精度尚好。
Li Ke Huang Mengguang Cao Shengchun Huang Yanong
Abstract:The new method of directly producing phenol from benzene is studied.Fe Cu Mn O/sepiolite is used as catalyst,the hydrogen peroxide and the additive are used as oxidant.The effect of additive,reaction temperature and hydroge
Zuo Jian Liu Zijian He Dongming
Abstract:The connecting technology between SUN,SGI workstation with UNIX as operation system and Personal Computer with DOS as operation system was described.The communication between computers with different types and network was impl
Liu Shaofeng Chen Youming Liu Zhongping
Abstract:Based on the conditions of the site of automatic manufacturing the sources of interference of computer controlled system are analysed and some practical auti interference ways are presented. It has been proved that the st
Huang Chun Peng Jianchun Nie Guangqian
Abstract:依据电力系统的近似数学模型，提出了适用于稳定供电电压的无功电压控制曲线。在此基础上，论述了应用插值公式的静止无功补偿计算机控制方法。该方法应用简便，具有较好的动静态特性。
Abstract:Two cubic elements with rotational degrees of freedom are presented. They have high accuracy and are suitble for analyzing the thick conversion plate in tall building structures. One example solved by the new elements is
Gao Xuanneng Zou Yinsheng Zhou Xuhong
Abstract:The geometrically nonlinear equilibrium equations and all their boundary conditions of thin walled open cross section members are strictly derived from the theorem of minmum potential energy. The physical meanings of the bo
Abstract:通过２榀预应力混凝土叠合框架１：３比例的模型试验，了解了叠合梁框架在竖向荷载作用下的受力性能。讨论了叠合梁截面应变分布特点，并分析了梁的配筋率这一主要参数对框架极限承载力和破坏形态的影响。
Abstract:研究了一种包括ＮａＯＨ脱硫、自制的还原剂还原、ＮａＯＨ－ＫＮａＣ４Ｈ４Ｏ６电解液体系电沉积铅过程的湿法回收废蓄电池填料的新技术，获得Ｐｂ〉９９．９９％的纯铅粉末，铅总回收率〉９８％，此法工艺过程稳定，无环境污染。
Shi Yang Cai Kuping Wang Jihui
Abstract:对造纸厂处理黑液后副产的碱木素进行了改性研究。研究表明：新型改性剂ＬＭＥ可在室温下，较短时间内对碱木素进行改性，大大提高了碱木素的表面活性。所需设备简单，生产操作方便。将改性后的碱木素作为减水降粘剂用于普钙生产中活化矿浆，降粘效果好，达到实际生产的要求。
Abstract:The analysis of the current situations of the export market of our foreign trade is made according to the strategy of multiple factors in the export market. It applies the AHP of the Multiple Objective decision making
