埋头无壳弹中可燃底火点火能量利用分配规则及应用

埋头无壳弹的点火、燃烧与装药结构的相互匹配有着下分密切关系。通过研究,找出了可燃底火点火能量具有一定的分配性。根据这一点火能量利用分配规则,调整可燃底火或辅助点火药的药量,可以改善内弹道性能。     

Synthesis and XPS investigation of superdense lithium-graphite intercalation compound, LiC2

The superdense lithium-graphite intercalation compound (GIC),LiC₂, first synthesized by the author was prepared by the original technique in a piston-cylinder high-pressure chamber with internal heater. Cleaved surfaces of this compound, LiC₃, LiC₆ and pristine graphite were studied by the X-ray photoelectron spectroscopy (XPS) technique. It was shown that chemical shifts of carbon do not vary in the range LiC₆ to LiC₂ which suggests that the additional lithium intercalation into LiC₆ gives no significant change in the charge transfer rate per carbon atom. Carbon/lithium atom ratios were obtained for freshly cleaved surfaces and for the surfaces after argon ion bombardment. It was shown that the bombardment results in the surface decomposition of LiC₂-GIC.     

基于充气过程的血压检测技术研究

传统的示波法均是在放气过程中测量血压,基于这种原理设计的血压测量系统功耗高,体积大,个体适应性差,难以满足动态血压监测低功耗和微型化的要求。本文研究了基于充气的自适应血压测量技术,克服了放气血压测量的缺陷,从而满足了动态血压监测的要求。     

Engineering of charge transport materials for universal low optimum doping concentration in phosphorescent organic light-emitting diodes

A universal low optimum doping concentration of below 5% was demonstrated in phosphorescent organic light-emitting diodes (PHOLEDs) by managing the energy levels of charge transport materials. The device performances of PHOLEDs could be optimized at a low doping concentration of 3% irrespective of the host material in the emitting layer. The suppression of charge trapping and hopping by the dopant through charge transport layer engineering optimized the device performance at low doping concentration. In addition, it was revealed that PHOLEDs with low optimum doping concentration show better quantum efficiency, low efficiency roll-off and low doping concentration dependency of the device performance.     

12路无起爆药非电传爆系统设计研究

为了提高非电传爆系统的安全性,设计了一种全系统无起爆药结构的12路无起爆药非电传爆系统,对无起爆药起爆装置、无起爆药传爆组件、无起爆药输出部件进行了结构、装药设计。通过输入端传爆性能试验、输出端传爆性能试验及作用时间试验,验证了12路无起爆药非电传爆系统结构设计合理,可大幅提高安全性及抗电磁环境能力。     

一种无硫烟花发射药的开发及应用研究

利用模拟烟火药在定容、密闭条件下的数值计算方法,开发了1种以新型还原剂、硝酸钾为主的新型无硫烟花发射药配方。对该发射药的安全性能及使用性能进行测试,结果表明新型发射药的撞击感度、爆发点及静电感度安全性能均优于传统黑火药,且其压力上升速度、做功能力大于传统黑火药。     

在线互动式UPS充电、逆变原理分析

本文主要分析了在线互动式UPS电源的充电、逆变的基本原理。     

Charge Stripes and Superconductivity in La2−x Ba x CuO4 and La1.6−x Nd0.4Sr x CuO4

We report x-ray scattering study of charge density wave (stripe) order in La_2−x Ba _x CuO₄ (LBCO) and La_1.6−x Nd_0.4Sr _x CuO₄ (LNSCO). The doping dependence of the charge stripe ordering temperature and the low-temperature correlation length is compared with the bulk superconducting transition temperature. We find that the charge stripe ordering temperature and correlation length are quite different in these two families of cuprates, while there seems to be inverse correlation between the bulk superconducting temperature and the charge stripe correlation length.     

小城镇居民水电气综合收费系统的分析与设计

本文通过对当前小城镇收费现状的调查,结合收费系统的发展趋势,对水电气收费系统进行分析与数据库设计。