永磁除铁装置表面最佳磁感应强度的实验确定方法

在设计永磁除铁装置时，一个关键问题就是吸附表面磁感应强度的确定。在保证吸净率最高的条件下，必须确定其吸附表面磁感应强度大小，以确保除铁装置处于最佳运行状态。本文在大量实验的基础上，给出了测定表面磁感应强度的最佳值方法。     

INNER MODE OF PLASMA CYLINDRICAL WAVEGUIDE IN LOSS MATERIAL *

分析了有耗介质中圆柱等离子体波导的内部模式,重点讨论了波导传播常数随等离子体参数和介质损耗的变化．导出了内部模式的特征方程,并给出了相应特征值的近似解表达式．分析结果表明,磁性有耗介质中波导内部模式的束缚条件比电性有耗介质中波导内部模式的束缚条件更容易得到满足;内部模式场仅在ω＞ωｐ条件下存在（ωｐ是等离子体频率）．     

S3中曲面的无穷小等距及无穷小刚性

引入并研究了S^3中曲面的无穷小等距变形理论及无穷小刚性，得到了一些关于Ⅰ、Ⅱ、BⅠ、BⅡ——等距的新结果。     

陶瓷先驱体聚硅烷的合成与表征

以甲基氢二氯硅烷为单体,利用超声波条件下Wurtz聚合的方法,合成了可溶性聚硅烷,研究了对二溴苯和萘对反应的影响,并用红外光谱(IR)、凝胶渗透色谱(GPC)、X射线衍射(XRD)对产物进行了表征.结果表明:对二溴苯和萘均能使聚合反应平稳进行;在含有对二溴苯的反应体系中,所得聚硅烷的分子量较大,聚硅烷的陶瓷产率较高.对聚合机理作了初步探讨.     

铝合金微弧氧化陶瓷膜的形貌及相组成分析

采用Ｘ射线衍射法和扫描电镜研究了ＬＹ１２铝合金微弧氧化陶瓷膜的相组成及形貌特征。结果表明，铝合金微弧氧化陶瓷膜主要由α－Ａｌ２Ｏ３，γ－Ａｌ２Ｏ３相组成，氧化膜具有表面层，致密层，界面层３层结构，微弧大小一般为微米数量级，微弧区Ａｌ２Ｏ３处于熔融状态。     

局间通信负荷监控问题的形式化方法

利用最新时段演算等理论，形式化负荷监测功能的告警原理和组合输出问题，并进行必要的形式化推导，以确保规范说明具有可理解性和准确性．还给出了实现监控的核心算法．     

蛇类野外资源量调查方法:生境样方样带结合法

介绍用于蛇类野外资源量调查的生境方样带结合法。该法在总体（生境）分层抽样的基础上将样方法和样带法结合，在兼顾适用性的前提下，提高了调查的精确性，具有较强的可操作性和实用性，适用于较大范围的蛇在资源调查，并就提高精确度的途径作了讨论。     

利用动态平移法研究某油田油水分布特征

根据油田内资料欠缺、储层薄、岩性复杂、非均质性强的特点,提出用“动态平移法”进行流体性质识别。实践证明,该方法具有简便易行、精度高、分辨能力强等特点。利用此方法不仅可有效区分油、水、干层,并且可更准确地确定油层分布位置。     

Gigantic jets between a thundercloud and the ionosphere

Transient luminous events in the atmosphere, such as lighting-induced sprites and upwardly discharging blue jets, were discovered recently in the region between thunderclouds and the ionosphere. In the conventional picture, the main components of Earth's global electric circuit include thunderstorms, the conducting ionosphere, the downward fair-weather currents and the conducting Earth. Thunderstorms serve as one of the generators that drive current upward from cloud tops to the ionosphere, where the electric potential is hundreds of kilovolts higher than Earth's surface. It has not been clear, however, whether all the important components of the global circuit have even been identified. Here we report observations of five gigantic jets that establish a direct link between a thundercloud (altitude approximately 16 km) and the ionosphere at 90 km elevation. Extremely-low-frequency radio waves in four events were detected, while no cloud-to-ground lightning was observed to trigger these events. Our result indicates that the extremely-low-frequency waves were generated by negative cloud-to-ionosphere discharges, which would reduce the electrical potential between ionosphere and ground. Therefore, the conventional picture of the global electric circuit needs to be modified to include the contributions of gigantic jets and possibly sprites.     

CaO-SiO_2-MgO-H_2O体系的热力学研究

本文研究了ＣａＯ－ＳｉＯ２－ＭｇＯ－Ｈ２Ｏ体系的热力学,结果表明：ＳｉＯ２ 优先与ＣａＯ水热形成水化硅酸钙,多余的ＳｉＯ２ 才会与ＭｇＯ直接水热形成水化硅酸镁。当没有ＳｉＯ２ 时,ＭｇＯ才会水化形成Ｍｇ（ＯＨ）２。