抗超高速撞击多层结构复合材料研究

本文介绍了抗超高速撞击多层结构复合材料的设计、制备和实验,并对结果进行了讨论,实验证明,以SiC陶瓷基复合材料为防护层、以空心微珠或多孔变密度复合材料为缓冲层、以编织物复合材料为结构层的多层结构复合材料,具有面密度低、抗撞击速度范围宽、抗撞击性能好的特点。     

Technical and proliferation‐related aspects of the dismantlement of Russian Alfa‐Class nuclear submarines

When does a state become a “nuclear weapon state”? How we choose to answer this question has significant implications for proliferation assessment, analysis, and policy. Traditionally, the standard demarcation line has been a state's first nuclear test, but in recent years analysts have increasingly focused instead on the accumulation of a significant quantity (SQ) of fissile material. The article argues that although the test/no-test indicator clearly has problems, its replacement by the SQ/no-SQ indicator would be highly counterproductive. The article instead proposes supplementing the traditional test/no-test indicator with a theory-driven approach that focuses on the incentives and disincentives to test.     

STRATEGY FOR A NEW NUCLEAR AGE

Current U.S. nuclear weapons strategy, force structure, and doctrine contribute to the threat of nuclear terrorism in several ways. First, the U.S. nuclear stockpile presents opportunities for nuclear terrorists to seize the materials they need. Second, U.S. nuclear forces remain a key justification for Russia's maintenance of similar nuclear forces that are less well protected. Third, America's continued embrace of nuclear weapons encourages and legitimizes other states to seek nuclear weapons that they will have difficulty securing from terrorists. The national security interests of the United States would be better served by a strategy to shrink the global footprint of nuclear weapons and provide the highest possible levels of security for the most minimal possible deterrent forces. Given the inability to secure nuclear weapons and materials perfectly or to eliminate terrorism in the foreseeable future, reducing the global inventory of nuclear weapons and materials is the most reliable way to reduce the chances of nuclear terrorism.     

电流变液的光学特性及其应用研究

电流变液是一种极具发展前景的新型智能材料．文中介绍了目前国内外电流变液的光学特性研究动态,分析了其机理,并展望了应用前景．力求能准确反映电流变液光学特性研究的发展现状,旨在促进电流变液在光学领域的研究．     

依据供应标准获取装备维修器材需求分布的方法

依据当前装备维修器材供应标准和装备维修器材保障程度模型,建立了求解装备维修器材需求分布的几种典型模型,并给出了相应的求解方法和举例,所给模型与方法具有一般意义,有较大的推广价值,对实际工作中装备维修器材的评估及科学保障具有指导意义。     

自润滑弹带接触应力问题的初步计算

从弹带的作用及特性出发,通过研究弹带接触应力问题,得出了决定其大小的几个因素之间的关系,然后比较自润滑弹带与普通弹带在挤进过程中所受接触应力的不同,从而得出了新的结论,即自润滑弹带减小了弹带和身管间的摩擦系数,达到了身管延寿的目的。     

战时器材资源点保障能力评估

建立了一套战时器材资源点保障能力的评估指标体系,分析了其权集的确定和量化过程,在此基础上应用加权平均法完成保障能力的计算,实现了对战时器材资源点保障能力的评估,并将之运用到实践中。     

现代水面舰船结构发展的若干问题

本文综述现代水面舰船结构的若干进展,从舰船结构材料、结构型式以及舰船生存能力等方面进行评述。     

抗红外/毫米波双模制导的烟幕剂研究

针对目前我军受到的红外 毫米波复合制导武器威胁及现有干扰措施的局限,提出将纳米复合材料G用做宽波段烟幕干扰剂,该材料具有较高电导率、磁导率,比重小,在空气中较为稳定。简述干扰材料G的制备方法,分析其材料特性,初步测试其对红外热成像仪和毫米波雷达的衰减效果。     

关于科研设备物资采购制度改革的实施建议

采购制度改革是“十五”期间解放羊提出的一项重要课题。根据上级有关改革精神和要求,分析防化研究院科研设备物资采购管理现状。并提出改革总体思路和具体措施。