泥石流危险性动量分区方法与应用

运用泥石流运动数值模拟和GIS相结合的方法模拟泥石流出山口后的运动全过程, 求得泥石流流速和流深分布, 确定泥石流过程中泛滥范围内任一点的最大动量, 建立了泥石流危险性动量分区模型Z = Khv. 根据考察和实验资料对委内瑞拉首都加拉加斯的Chacaito沟百年一遇泥石流运动过程进行了模拟, 利用动量分区方法划分出泥石流危险区.     

连续系统振动特征值摄动问题的统一解法

将离散系统振动分析中的通用的矩阵摄动法推广到连续系统。采用弹性结构理论算子，对连续系统的振动特征值摄动问题进行统一描述。根据特征函数子空间缩聚法和正交分解的基本原理，推导了统一的摄动公式。该方法能同时有效地处理孤立、重及密集特征值3种不同情况。以薄膜振动和变厚度薄板弯曲振动的特征值问题为例，阐明了方法的实际应用。     

CHARACTERIZATION OF SOL-GEL-DERIVED ZrO2 FILM BY PHOTOTHERMAL RADIOMETRY

In modern industry,thin film on the substratc has much important role to decide the properties of product, especially for electrical, optical and wear-resistant etc, production. There are some technical methods to prepare thin film,including plasma spray,physical vapor deposition (PVD),chemical vapor deposition (CVD) and sol-gel,etc. Among of them,sol-gel method has been developed a popular tech nique for preparing thin films.     

两种线分维及线分维与面分维间关系

分别用二次电子扫描线法和垂直抛面法对不同回火制度的３０ＳｉＭｎＣｒＮｉＭｏＢ钢的冲击断口表面的分维数进行了数量。通过研究发现：平行裂纹扩展方向的分维更适合于描述材料韧性的变化。     

卟吩质子化过程结构变化的理论研究

用ＡＭ１ＭＯ方法计算了质子化卟吩的构型，并通过结构分析、电荷布局分析和前线轨道分析，讨论了其质子化过程的构型变化及Ｒａｍａｎ光谱变化的原因。     

复杂载荷下的疲劳寿命估算

从疲劳过程本质上是材料静强度不断退化过程的观点出发，建立了一个强度退化模型．将模型应用于两级、多级和随机载荷下疲劳寿命估算，经试验和算例验证，表明该方法是合理可行的     

合成TiN膜的俄歇电子能谱研究

采用离子束增强沉积方法（ＩＢＥＤ），在Ｆｅ基上制备了ＴｉＮ薄膜。通过划痕仪，透射电镜（ＴＥＭ），俄歇电子能谱（ＡＥＳ），粘着力测量仪的观测，分析和计算，给出了膜的形貌，组分和机械特性；发现ＴｉＮ膜与衬底之间存在一过渡区，膜中含氧量比气相真空沉积（ＣＶＤ）明显减小。在ＡＥＳ定量计算中，本文采用一种与文献不同的方法，较为简便地处理了俄歇谱中Ｔｉ和Ｎ峰的重叠现象     

Endogenous oscillatory activity and TTX-sensitive spikes of the heart muscle in early juveniles of the isopod crustaceanLigia exotica

The heart beat of early juveniles of the littoral isopodLigia exotica occurred at a frequency of 250 to 350/min, associated with rhythmic activity of the heart muscle. Each burst was composed of a slow depolarizing potential with superimposed spike potentials. The spike potential was eliminated by perfusion with TTX-containing or Na⁺-free saline. In TTX-saline, the slow potential was unchanged in frequency and amplitude. By current injection into the heart muscle, the rhythm of the slow potential was phase-shifted and its frequency was changed in a membrane potential-dependent manner. These results show that the heart ofLigia early juveniles acts as an endogenous muscle oscillator generating oscillatory slow potentials and Na⁺-dependent spikes.