风机动力型末端在变风量空调系统中的应用

通过对从低温送风技术中发展起来的变风量系统末端--风机动力箱的分析,在实际应用中对比两种型式的该种末端,分析其优缺点,认为这是一种值得在高级办公大楼中优先考虑和推广的系统形式.     

Electroplated hard magnetic material and its application in microelectromechanical systems

We describe the preparation of CoNiMnP-based permanent-magnet material using several sulfate and chloride solutions. We studied eight samples, and all the samples show vertical magnetic anisotropy. Sample8, which was electroplated from a low-concentration chloride solution and under external magnetic field, demonstrates the best magnetic properties with coercivity 2632 Oe, remanence 0.20 T, and maximum magnetic energy 10.185 kJ/m/sup 3/. An array structure can avoid the stress between the electroplated layer and the seed layer. The electroplated Co/sub 0.8/Ni/sub 0.1174/Mn/sub 0.0062/P/sub 0.0762/ permanent magnet has potential for bidirectional actuators in micro-electromechanical systems.     

爆炸冲击波作用下核电站安全壳动力分析模型

根据某国防科研课题，建立核电站安全壳在爆炸冲击波作用下的动力分析模型，讨论并分析了质点杆模型在安全壳预应力混凝土结构中的应用。质点杆模型可用于计算爆炸冲击波作用下的结构响应。     

退火对直流磁控溅射铬膜附着性的影响

为了利用铬膜改善锆的抗腐蚀性，研究了退火对Zr-2基体上制备的直流磁控溅射铬膜附着性的影响，使用扫描电镜（SEM）观察了界面形貌及锆，铬的界面的分布，用X－射线衍射仪（XRD）分析了膜层的组成，用划痕法测定了铬膜的附着，结果表明，锆／铬界面结合良好，边界可见；与现有文献比较，获得的铬膜附着性好――均超过20N；溅射后退火使Zr-Cr界面更像扩散界面，但X－射线衍射结果未发现有界面反应产物；退火提高铬膜与Zr-2基体的附着性约50％，扩散际着附着性增加的主要因素。     

锆-4合金Masing特性的研究

为了更好地认识锆及其合金的循环变形行为及其机理，用单试样逐级加载法研究了锆-4合金在室温下的Masing特性。结果表明：锆—4合金是否出现Masing特性，取决于应变幅和材料状态。通过用Cottrell方法对滞后回线进行分析，得到了锆4合金具有Masing特性的充分必要条件：对于任何应变幅的循环变形，在某一固定的应变值，其对应的显微组织应该都是不变的。     

The hydration characteristics and expansion machanism of expansive cement at low<Emphasis Type="Italic">W/B</Emphasis> ratio

The hydration characteristics and expansion impetus of three kinds of cement paste under free-and confined-curing conditions were investigated, which were respectively mixed with three different kinds of expansive agent at low W/B ratio. The results show that the hydration products of pure cement paste and paste mixed with expansive agent are same, but the amount of hydration products, un-hydrated C₃S and C₂S are obviously different at the same hydration age. At 3 d age, the amount of CH in pure cement paste is less than that of paste mixed with expansive agent, but it is reverse when at 28 d age. The amount of AFt at 3d and 28d age in pure cement paste is less than those of paste mixed with expansive agent. Regardless of under free- or confined-curing condition, the amount of ettringite produced varies little since 3d age. The joint effect of the tumefaction of gel-ettringite due to water absorption and the expansive pressure on the pore caused by the crystalloid ettringite is the cause of the volume expansion of cement paste, and the former effect is much greater than the latter. LU Lin-nu : Born in 1972 Funded by 973 High-tech Project of China (No. 2001CB610704-2) and the Natural Science Foundation of Hubei Province(No. 2002AB075)     

分布式物料管理系统的开发

本文将分布式体系结构应用于某企业的物料管理系统中，对本系统的需求做了一定的分析，介绍了应用系统的结构、开发方法与实现，解决了该公司的实际问题，实现了对企业物料的入库、出库、维修、公司合同，付款等功能的管理，对国内现有企业的物料管理具有现实的指导意义。     

氮离子注入铝的结构研究

采用掠射X射线衍射和AES方法分析了氮离子注入铝的结构和成分,采用TRIM?8程序对注入过程中氮浓度随深度的分布进行了模拟。结果表明:当温度低于300℃,能量为60 keV,用71017 /cm2和1?018 /cm2注量的氮离子注入铝时,在铝的表面生成了六方结构的AlN而不是立方结构的AlN;同时碰撞扩散作用在氮离子注入过程中居主导地位,热扩散作用和辐照增强扩散作用均不明显。     

铅冷快增殖堆物理和热工水力研究

对25MW电功率铅冷快增殖堆堆芯进行了物理和热工水力概算，并将计算结果与相同功率的钠冷快增殖堆的结果进行了分析比较。从初步概算的结果来看，铅冷快增殖堆是一种安全可行的快增殖堆堆型。     

EPICS系统中CORBA接口技术的研究

介绍了被称为软总线的中间件(Middleware)CORBA与分布式控制系统软件工具EPICS的接口技术。CORBA接口技术能极大地改善大型实验物理装置的系统建模、仿真和机器运行等高层物理应用软件的开发环境，提高软件可重用性、可维护性以及可移植性。