峒室爆破CAD设计方法研究

本文对峒室爆破断面布药计算机辅助设计参数驱动方法进行了探讨围绕断面布药主要参数的变化，提出一种基于参数驱动的计算机辅助设计方法，利用ｗｉｎｄｏｗｓ操作系统下的动态数据交换特性，对断面布药进行布药参数优化，实现了交互调整布药，形成一套断面布的计算机软件，为工程爆破设计实现计算机提供了一种可行的方法。     

北京谱仪Ⅱ（BESⅡ）顶点探测器数据获取系统

北京谱仪（ＢＥＳⅡ）顶点探测器数据获取系统是北京谱仪数据获取系统的一部分，该子系统电子学采用快总线标准，本文描述了该系统的硬件结构和软件系统，软件包括快总线系统的微码软件和上层控制软件，该系统的死时间为１．５ｎｓ，对ＢＥＳⅡ系统总死时间的贡献小于０．５ｍｓ。     

高温高压设备瞬态密封分析的三维力学与传热学模型

以大型加氢反应器的高压法兰密封结构为研究对象，建立了瞬态及稳态密封分析的三维力学与传热学模型，主要解决了螺栓载荷的动态模拟和螺栓孔内空气环层的传热计算问题。利用该模型对加氢反应器的瞬态及稳态密封状况进行了计算。     

气溶胶和氡浓度变化对氡子体影响的探讨

为了得到气溶胶变化后对氡子体产生的影响,实验通过气溶胶粒径谱仪SMPS测试氡室内不同浓度气溶胶,分析气溶胶的变化情况,根据AlphaGUARD测氡仪以及AlphaPM子体仪测试变化的氡浓度不同气溶胶下子体变化情况。实验结果表明：在两个NaCl浓度的气溶胶条件下,气溶胶的总量随着气溶胶发生器中的NaCl浓度的增大而变大,由于氡子体结合态随气溶胶浓度改变,氡子体浓度也随气溶胶浓度的增大而增大。并且在相同气溶胶浓度情况下,氡子体的浓度随着氡浓度的增大而增大。     

小型一体化PLC在气箱式脉冲袋收尘器中的应用

采用HOLLiAS—LEC G3小型一体化PLC对气箱式脉冲袋收尘器的控制系统进行了改造，提高了控制系统的稳定性和灵活性。     

Improvement of Heater Surface Flatness and Uniformity of TiN Film Deposition

The deposition rate and the thickness uniformity of chemical vapor deposition (CVD) titanium nitride films depend on wafer temperatures. The heater surface conditions, such as flatness, roughness, and surface imperfections, can greatly affect heat transfer efficiency from the heater surface to the wafer, and the process performance. Because heater surface imperfections or “hot spots” that caused poor uniformity had to be eliminated, the origin of “hot spots” was identified by a detailed study of heater surface profiles. A better visualization of “hot spots” could be obtained by comparing wafer-chucking patterns with deposition patterns. Thus, the time needed to locate “hot spots” could be shortened. The manufacturing process was revised to prevent “hot spots” and improve heater performance.     

Development of a novel device for applying uniform doses of electron beam irradiation on carcasses

The Maxim's Electron Scatter Chamber (Maxim Chamber) was developed to obtain uniform dose distribution when applying electron beam (e-beam) irradiation to materials of irregular surface. This was achieved by placing a stainless steel mesh surrounding a cylindrical area where the target sample was placed. Upon contact with the mesh, electrons scatter and are directed onto the target from multiple angles, eliminating the e-beam linearity and resulting in a uniform dose distribution over the target surface. The effect of irradiation in the Maxim Chamber on dose distribution and pathogen reduction was tested on rabbit carcasses to simulate other larger carcasses. The dose uniformity ratio (DUR) on the rabbit carcasses was 1.8, indicating an acceptable dose distribution. On inoculated carcasses, this treatment reduced Escherichia coli O157:H7 by > 5 log cycles. These results indicate that carcass irradiation using e-beam is feasible using the Maxim's electron scattering chamber. Appropriate adjustments will be further needed for commercial application on beef and other animal carcasses.     

节理岩体爆破研究进展

实际的岩体都是被节理裂隙等弱面切割，对爆破效果有很重要的影响、本文在回顾并综合分析了节理岩体爆破理论和试验研究状况的基础上，对节理岩体的质量综合评价、力学模型的研究、数值模拟的研究、爆破块度的分析及理论与试验相结合等方面提出了几点看法。     

条形药包硐室爆破技术在南昌蛟桥枫景采石场中的应用

本次爆破根据采石场的地形、地貌特点及厂方的要求，将理论知识与实际经验相结合，合理地选择了条形药包洞室爆破的爆破方案，确定了爆破参数、爆破起爆网路、爆破安全距离，使得本次爆破取得了非常理想的爆破效果。     

格子砖热工特性对蓄热室内换热的影响

分析了热风炉蓄热室内各时期的基本传热形式,建立了其传热过程的数学模型。针对首钢2号高炉1#热风炉进行了实例计算,通过对模型计算值与实测值的比较分析,表明本模型具有较好的适用性。对比分析了几种不同几何参数的格子砖的换热情况,结果说明,在新建和改造的热风炉上采用十九孔格子砖将可获得良好的热工指标。