柱形杀爆战斗部的破片初速分布

针对有限长柱形杀爆战斗部装药两端的稀疏波效应而提供了比较符合实况的有效装药模型，并由此求得适用于估算柱形杀爆战斗部破片初速的修正型格尼公式，用它计算的破片初速分布与实验结果极为相符。     

爆生气体驱动的裂纹扩展速度研究

通过分析计算炮孔周边径向裂纹尖端的应力强度因子，认为:爆生气体驱动的裂纹扩展可分为稳定扩展和非稳定间断扩展两阶段。在稳定扩展阶段，裂纹扩展速度由Ｇｒｉｆｆｉｔｈ理论确定；在间断扩展阶段，裂纹的平均扩展速度完全取决于焊生气体在裂纹中的一维膨胀流动速度。     

DYNAMIC LOAD ANALYSIS OF UNDERGROUND STRUCTURE UNDER EFFECT OF BLAST WAVE

A semi-analytical method of solving the problem of dynamic stress concentration of arbitrary underground structure under the effect of blast waves was introduced. Using the Fourier transform theory, the shock waves (in the forms of SH-waves) can be converted into frequency bands. After employing complex functions and conformal mapping, the admittance functions of various underground structures were obtained. Then, the problem of the time domain dynamic stress response of underground structure can be easily solved through the Fourier inverse transform. At last, the results and curves of the dynamic stress for the square, triangle and horseshoe cavity were presented.     

化爆冲击波和炮口冲击波对生物致伤效应的对比研究

通过TNT化爆和火炮现场试验,探讨了化爆冲击波和炮口冲击波的异同点,结果发现两者的频谱大致相似。但化爆冲击波只有一次激波,而炮口冲击波有两次激波,有时甚至可见到三次激波。生物效应致伤的靶器官也有所不同,化爆冲击波以肺损伤较为多见,而炮口冲击波似乎以上呼吸道更为敏感,结果提示化爆可以模拟炮口冲击波,但又不完全等同于炮口冲击波,必要的火炮现场试验是必不可少的。     

计算机辅助氧弹量热计探索火箭燃料的推进性能

本实验基于现行“综合化学实验”进行创新性改进。将一定压力的氮气充入氧弹,在以硝酸钾为氧化剂、三氧化二铁为催化剂的条件下,混合一定比例的蔗糖得到硝糖燃料,进行燃烧,采用环境恒温量热计记录蔗糖燃烧过程中的温度变化,再通过雷诺作图法校正产生的DT偏差,最终计算得到硝糖燃烧过程的恒容热效应,即为硝糖燃料的爆热值。当蔗糖:硝酸钾:氧化铁的质量比为39:59:2时,其爆热值最大,比冲最大。在上述实验的基础上,选择最佳配比的硝糖燃料,用于计算机仿真模拟火箭发射系统。通过改变燃烧室压力和燃料流速,计算得到该最佳配比硝糖燃料的比冲和火箭飞行高度,进而得到采用单级火箭将东方红一号卫星送入预定轨道的发动机参数。改变每一级火箭的燃料类型与比例,设计得到适于推进不同卫星进入预定轨道的二级火箭和三级火箭。通过设计氧弹量热计的拓展应用与计算机仿真模拟相结合的实验,达到已有实验的创新设计、启发学生创造性和引起科研兴趣的目的。     

Synthesis,Structure and Acaricidal Activity of Tricyclohexyltin Benzoate

Tricyclohexyltin 4-amino-3-methyl-benzoate(1) and tricyclohexyltin 3,4-dimethoxybenzoate(2) were synthesized and their crystal structures were determined by X-ray diffraction. Compound 1 belongs to the monoclinic system, space group P21/c with a = 14.0554(15), b = 11.6947(13), c = 16.2720(17) , Z = 4, V = 2565.7(5) 3, Dc = 1.341 g·cm-3, μ(MoKα) = 1.016 mm-1, F(000) = 1080, R = 0.0833 and wR = 0.2964. Compound 2 is of monoclinic system, space group C2/c with a = 17.8712(6), b = 8.4433(3), c = 35.5783(13) , Z = 8, V = 5366.8(3) 3, Dc = 1.360 g·cm-3, μ(MoKα) = 0.980 mm-1, F(000) = 2288, R = 0.0549, wR = 0.1279. In compounds 1 and 2, the central Sn atom is coordinated in a tetradentate manner to assume a distorted tetrahedral configuration. Preliminary biological tests showed that these two compounds have strong acaricidal activity.     

芳香酸环己基(苯基)[(三甲基硅基)甲基]锡酯的合成及结构

合成了11个芳香酸环己基(苯基)[(三甲基硅基)甲基]锡酯,并通过1H NMR,13C NMR,IR和元素分析对目标化合物结构进行了表征.生物活性测试的初步结果表明,该类化合物具有一定的杀螨活性.     

氢气爆炸能量工程估算方法

根据文献资料，给出了一种估算氢气爆炸能量及其在空气中产生的冲击波超压的方法。     

Astrophysical Rates for ^12N（p,γ）^13O Direct Capture Reaction

The proton capture on the unstable nuclei plays a very important role in nucleonsynthesis. The ^12N（p,γ）^13O reaction rates at the energies of astrophysical interest are estimated with the spectroscopic factor and asymptotic normalization coeffcient methods. The present results show that the ^12N（p,γ）^13Oreaction may play an important role in x-ray bursts.     

单滴乳化燃料的微爆模型

本文分析了乳化燃料应用与机理研究的现状．在理论分析与实验研究的基础上，本文提出了一个新的分析单个乳化油滴微爆的理论模型-局部混合分阶段蒸发模型，反映了实际油滴内混合的过程，较好地解释了“冷滴”、“无水边界层”等实验现象，为进一步进行微爆的预报与分析影响微爆的因素打下了基础．