地连墙下既有人防工程处理的工法研究

以合肥轨道Ⅰ号线明光路站地连墙施工为例,对地连墙下既有人防工程的处理工法进行了研究。试验证明该工法安全可靠,具有创新性、指导性和很强的推广性,可广泛应用于地下桩基、废矿井和地铁等局部地基的处理,具有重要的经济效益和社会效益。     

加快推进国防和军队现代化

为贯彻落实党的十八大报告提出的“加快推进国防和军队现代化”的任务要求，文中提出，一是要深刻认识加快推进国防和军队现代化的成就基础，二是要准确把握加快推进国防和军队现代化的新思想新要求新任务，三是要从进一步加强思想政治建设，切实加快转变战斗力生成模式，坚持不懈地拓展和深化军事斗争准备，大力发展新型作战力量等方面入手，加快推进国防和军队现代化的步伐。     

基于R＆D成本补偿的国防采购激励机制研究

建立一套合适的激励机制可以极大地节约国防采购的成本、提高资源的利用效率．研究国防采购中的激励机制，着重探讨国防采购的重要阶段——厂商从事国防项目的研究与发展阶段，军方可以采取的激励机制．得出了为了提高厂商效用、降低厂商从事国防研究与发展的风险，军方必须对厂商的研究与发展进行一定比例的补贴，给出了能使厂商按照军方所期望的规模对国防项目的研究与发展进行投资的最优补偿比率．文中结论表明：军方的补偿比率和从事国防项目的研究与发展的厂商数、项目的期望利润以及军方期望的研究与发展的投资规模有关．     

边防管理工作中的信息交流及其障碍排除

边防管理工作是对有关人和事务的一种特殊的管理，所以离不开及时、畅通的信息交流。阐述了边防管理工作中的人际信息交流、组织信息交流和大众信息交流3种信息交流的基本类型，分析了信息交流的主要障碍，并提出了相应的改进措施。     

论正当防卫

通过对正当防卫的概念、历史、特征等法律问题进行评析,并阐述正当防卫的必要限度,从而提出关于正当防卫在司法实践中如何正确运用的相关问题,且对正当防卫制度的完善提出了自己的观点。     

Observations on the toxicity and metabolic relationships of polygodial,the chemical defense of the nudibranchDendrodoris limbata

Summary Polygodial (1), the defense metabolite stored in the skin of the nudibranchDendrodoris limbata, is toxic for the mollusc itself when injected into the hepatopancreas. Biosynthetic experiments using labeled mevalonic acid were devised to investigate a possible metabolic relationship between1 and the mixture of sesquiterpenoidic esters2, stored in the hepatopancreas. The results suggest that1 and2 are biosynthesized by independent pathways.Thanks are due to G. Villani for supplyingDendrodoris limbata and to A. Trabucco for technical assistance.     

Paternal allocation of sequestered plant pyrrolizidine alkaloid to eggs in the danaine butterfly,Danaus gilippus

Summary Pyrrolizidine alkaloid sequestered by adult maleDanaus gilippus from plants is transferred in large measure to the female at mating, and by the female to the eggs. The eggs, presumably, are protected as a result. The male's courtship pheromone, danaidone, derived from the sequestered alkaloid, may function to advertise the male's alkaloid-donating capacity.Acknowledgments. Paper Nr. 89 of the series Defense Mechanisms of Arthropods. Study supported by NIH (Grants AI-02908 and AI-12020; Predoctoral Traineeship to DED), Hatch funds (191-7416), the Bache Fund (National Academy of Sciences, to DED), and the Theodore Roosevelt Memorial Fund (American Museum of Natural History, to DED). We thank M. Weingarner and J. Miller forD. gilippus collection, J. Boggan for technical assistance, and the staff of the Archbold Biological Station, Lake Placid, Florida, for assistance and hospitality. One of us (DED) is indebted to M. D. Achey, who by demonstrating nuptial cardenolide transfer in the monarch butterfly [Honors Thesis, Amherst College, Amherst, Massachusetts (1979)] raised the possibility that other plant metabolites might be similarly transferred in danaines.Deceased July, 1985. This paper is affectionately dedicated to his memory.     

Secondary metabolites of the chemically rich ascoglossanCyerce nigricans

Summary Two new metabolites of an apparent propionate origin have been isolated from the organic extract of the ascoglossan molluscCyerce nigricans. The proposed structures for the new natural products are based on interpretation of their physical and spectral properties. The new compounds isolated lacked the potent ichthyodeterrent properties of the whole animal extract suggesting that other molecules are involved in the defense of this shell-less mollusc.     

大学生国防教育教学体系探析

高等学校开设国防教育课不仅可以提升大学生综合素质,而且对培养大学生国家意识、国家安全观念都具有重大的战略意义;新时期国防教育课要达到较好的效果,还必须加强领导,统一认识,提高教师的教学水平。     

高速侵彻体碰撞化学子母弹头毁伤效应数值模拟

采用AUTODYN-3D数值模拟方法,对爆炸成形侵彻体高速碰撞下化学子母弹头有效载荷简化结构毁伤效应及力学机理进行了研究. 结果表明,对于典型的三层排布化学子弹有效载荷,子弹毁伤状态呈现为完好、变形、穿孔和碎裂4种典型模式,而且其分布显著受碰撞位置的影响,表现为复杂的多区间变化分布趋势. 进一步对化学子弹毁伤力学行为分析表明,子弹碎裂主要由高速侵彻体沿贯穿路径直接碰撞所引起,碎裂化学子弹高速流体喷射作用又导致部分化学子弹发生碎裂和穿孔,而相邻化学子弹间相互碰撞作用则是导致穿孔和变形的主要原因.