云母粒径对云母／聚丙烯性能的影响

研究了云母填充改性聚丙烯(云母/PP)中云母粒径对其性能的影响。实验结果表明:云母粒径越小使得云母/聚丙烯材料强度提高越大、断裂伸长率增加,加工流动性变好;同时也促进和有利于聚丙烯结晶过程中的成核作用。     

网络管理体系间迁移方法的探讨

本文提出了在异质型互连网络环境下为实现统一的网络管理可能出现的管理信息共享问题。为此，作者深入探讨，分析了目前国外为实现这种管理信息共享所采用的几种迁移方法；协议迁移，接口迁移和ＭＩＢ迁移。     

不连续增强镁基复合材料的界面行为

综述了近年来国内外关于Ａｌ２Ｏ３短纤维、ＳｉＣ晶须、ＳｉＣ颗粒、Ｂ４Ｃ颗粒增强镁基复合材料的界面结构及其对复合材料性能影响的研究进展，并对今后的研究提出了一些看法。     

三脉冲不等强度激光片光源的研制及应用

本文报道了最近研制成功三脉冲不等强度调Q红宝石激光片光源系统.利用小颗粒对片光源90°方向的散射光对动态颗粒场进行高速摄影,从底片中能够精确直观地判断微小颗粒的瞬时分布、运动方向、速度和加速度情况.     

高能粒子辐照对零膨胀微晶玻璃光学性质和面形光学稳定性的影响

研究了高能电子，高能质子对ＶＯ２微晶玻璃辐照前后光性质和面形光学稳定性的影响，研究结果表明，高能电子辐照能引起微晶玻璃面形明显变化，且使ＶＯ２微晶玻璃强烈着色。高能质子辐照没引起面形明显变化，高能质子辐照对反射光谱特性没有影响。     

Using airborne laser scanning to monitor tree migration in the boreal-alpine transition zone

The boreal tree line is expected to advance upwards into the mountains and northwards into the tundra due to global warming. The major objective of this study was to find out if it is possible to use high-resolution airborne laser scanner data to detect very small trees — the pioneers that are pushing the tree line up into the mountains and out onto the tundra. The study was conducted in a sub-alpine/alpine environment in southeast Norway. A total of 342 small trees of Norway spruce, Scots pine, and downy birch with tree heights ranging from 0.11 to 5.20 m were precisely georeferenced and measured in field. Laser data were collected with a pulse density of 7.7 m^− 2. Three different terrain models were used to process the airborne laser point cloud in order to assess the effects of different pre-processing parameters on small tree detection. Greater than 91% of all trees > 1 m tall registered positive laser height values regardless of terrain model. For smaller trees (< 1 m), positive height values were found in 5-73% of the cases, depending on the terrain model considered. For this group of trees, the highest rate of trees with positive height values was found for spruce. The more smoothed the terrain model was, the larger the portion of the trees that had positive laser height values. The accuracy of tree height derived from the laser data indicated a systematic underestimation of true tree height by 0.40 to 1.01 m. The standard deviation for the differences between laser-derived and field-measured tree heights was 0.11-0.73 m. Commission errors, i.e., the detection of terrain objects — rocks, hummocks — as trees, increased significantly as terrain smoothing increased. Thus, if no classification of objects into classes like small trees and terrain objects is possible, many non-tree objects with a positive height value cannot be separated from those actually being trees. In a monitoring context, i.e., repeated measurements over time, we argue that most other objects like terrain structures, rocks, and hummocks will remain stable over time while the trees will change as they grow and new trees are established. Thus, this study indicates that, given a high laser pulse density and a certain density of newly established trees, it would be possible to detect a sufficient portion of newly established trees over a 10 years period to claim that tree migration is taking place.     

׼������ظ���½��������ز�ˮ�����о�

位于准噶尔盆地腹部的陆梁油气田是准噶尔盆地的又一个亿吨级油气田。笔者运用地球化学方法分析了陆梁油气田石炭纪—早白垩世地层水的类型、平面和纵向分布特征，将其划分为3个水文地质旋回，第一旋回为石炭系—三叠系，为深层静止开放的滞流型水力系统；第二旋回为侏罗系八道湾组—西山窑组，为中层弱开放的压实驱动型水力系统；第三旋回为侏罗系头屯河组—白垩系，为浅层强开放的重力驱动型水力系统。第一、二水文地质旋回是油气生成和初次运移的有利时期，淋滤期前的一段时间是油气二次运移和成藏的较好时期，第三水文地质旋回是油气藏破坏及次生油气藏形成的时期。     

复杂构造叠后逆时深度偏移

本文从三维波动方程出发，导出了用于三维叠后逆时偏移的无层间反 波动方程，并给出了其数虎法和稳定性条件。     

复相陶瓷导电性与其粒径级配的关系研究

通过对无序渗流模型的修正，建立了具有不同特征尺寸的两相无序体系的导电模型，推导了相关关系式，将其结果与相复合导电陶瓷的实验结果进行了比较，结论相当一致。由此揭示了陶瓷生料的两相粒径分布对复合导电陶瓷导电性的影响。     

再论变化电磁场中带电超微粒子的精确量子论

利用创新的SU(1 ,1 )Lie代数理论及SO(3)Lie代数理论 ,得到变化电磁场中带电超微粒子的精确量子论 ,由此进一步明确微观领域中的时空概念