含能粘合剂BGAP在水反应金属燃料中的应用研究

水反应金属燃料是一种近年来备受关注的水下武器的高能推进剂。为了提高水反应金属燃料的能量性能,可以考虑将普通的HTPB粘合剂替换成为含能粘合剂。本文对含能粘合剂BGAP在水反应金属燃料中的应用作了比较系统的阐述。首先介绍了BGAP的主要物理化学性质和特点,然后利用正交试验等方法考察了应用BGAP的金属燃料的制作工艺以及它的燃速特性、药柱密度,获得了对BGAP金属燃料的燃速和密度影响较大的影响因素。最终获得的适用配方的燃速可达10．7mm／s,密度可达1．59g／cm^3。研究结果表明,BGAP可以应用在水反应金属燃料中,并且燃料的燃速和密度较为理想。     

含能粘合剂BGAP在水反应金属燃料中的应用研究陈支厦含能粘合剂BGAP在水反应金属燃料中的应用研究

水反应金属燃料是一种近年来备受关注的水下武器的高能推进剂。为了提高水反应金属燃料的能量性能,可以考虑将普通的HTPB粘合剂替换成为含能粘合剂。本文对含能粘合剂BGAP在水反应金属燃料中的应用作了比较系统的阐述。首先介绍了BGAP的主要物理化学性质和特点,然后利用正交试验等方法考察了应用BGAP的金属燃料的制作工艺以及它的燃速特性、药柱密度,获得了对BGAP金属燃料的燃速和密度影响较大的影响因素。最终获得的适用配方的燃速可达10.7mm/s,密度可达1.59g/cm3。研究结果表明,BGAP可以应用在水反应金属燃料中,并且燃料的燃速和密度较为理想。     

含酚废水处理工艺综述

含酚废水是一种常见的工业废水，本文分别阐述了萃取、SBR、湿式氧化几种典型工艺处理含酚废水的试验情况，归纳出不同含酚废水合适的处理工艺。     

SMT生产工艺中粘合剂应用问题的研究

本文讨论了ＳＭＴ生产工艺中有关粘合剂的问题，并就这些问题提出了解决方法。     

闸坝枢纽坝下消能的研究现状及发展综述

本文总结了闸坝坝下消能的几种基本的消能型式并总结了它们各自的消能机理和特点,并简要介绍了几种新型的消能工,并在此基础上提出了相关的一些问题和建议。     

国际潮流能利用技术发展综述

潮流能是一种环保可再生的海洋新能源,随着世界各国重视潮流能的开发与利用,潮流能技术在国际上取得了不断突破。本文在简述国内外潮流能发电历程的基础上,重点介绍了近五年来国际潮流能技术现状及最新进展,对已建、在建的各种潮流能发电站的实验状况、实际并网发电应用情况进行了阐述,同时总结了各种潮流能水轮机的装机容量、累计发电量、额定功率等情况。通过国内外潮流能技术的应用分析,总结了目前潮流能开发利用存在的问题,并针对我国潮流能发展现状和趋势提出了几点建议。     

定向能武器与未来航母编队防空反导

定向能武器是一种新型武器,未来可能用于航母。本文介绍了几种目前国外正在研制的定向能武器技术的研制情况和基本原理,并对定向能武器在航母及航母编队的潜在应用方向开展分析。此外,分析了定向能武器未来在美国"福特"级航母上的集成方式。     

定向能武器与未来航母编队防空反导

定向能武器是一种新型武器,未来可能用于航母。本文介绍了几种目前国外正在研制的定向能武器技术的研制情况和基本原理,并对定向能武器在航母及航母编队的潜在应用方向开展分析。此外,分析了定向能武器未来在美国"福特"级航母上的集成方式。     

几种新型薄壁组合结构的轴向冲击吸能特性研究

金属薄壁管是一种有效的吸能结构,并且在吸能体系中得到了广泛应用.用非线性有限元方法研究了轴向冲击载荷作用下方形直壁管和锥壁管的吸能特性,基于提高结构的吸能能力的考虑提出了几种锥壁组合结构和具有引发机制的直壁组合结构.数值计算结果表明组合结构的吸能能力较之原始结构有显著提高.     

几种新型薄壁组合结构的轴向冲击吸能特性研究

金属薄壁管是一种有效的吸能结构,并且在吸能体系中得到了广泛应用.用非线性有限元方法研究了轴向冲击载荷作用下方形直壁管和锥壁管的吸能特性,基于提高结构的吸能能力的考虑提出了几种锥壁组合结构和具有引发机制的直壁组合结构.数值计算结果表明组合结构的吸能能力较之原始结构有显著提高.     

Elemental composition, biochemical composition and caloric value of Antarctic krill.: Implications in Energetics and carbon balances

Samples of Antarctic krill were analyzed for elemental composition, biochemical composition, weight and caloric content. Sexes and maturity stages were separated. Mature females showed the highest caloric values (Joules) and juveniles the lowest in a per animal basis. On unit of wet weight per animal basis, spent females showed the lowest caloric values. For the caloric values by animal, a significant difference was found between males, mature females, spent females and juveniles, either on a per animal basis or in the basis of 1 g of wet weight, showing a real difference between the groups, regardless of their individual size. Significant differences were found for carbon, nitrogen and lipids, but not for proteins, analyzed in % of dry weight. Carbon was lowest for spent females and highest for mature females. On the contrary, nitrogen values were lowest for mature females and highest for males. Mature females had the highest lipid content and males the lowest. All variables were significantly correlated. For the linear regression analysis, the best correlation found was between Joules and carbon, followed by carbon vs. dry weight and Joules vs. dry weight. In an analysis with two independent variables, the best correlation was found for Joules vs. lipids and dry weight, followed by Joules vs. carbon and nitrogen, and Joules vs. lipids and proteins. The results obtained were used to make an analysis of the energy and carbon fluxes through the food chain in the sampled area, showing higher energetic and carbon “densities” in frontal areas, the POM calorific values showed an opposite pattern than that of krill.     

浅谈宗教艺术

宗教与艺术是一个相互不可分离的混合体,宗教色彩伴随着艺术的起源与发展。宗教艺术的特点是这一艺术不但具备宗教文化,而且具有很高的审美价值,是赋有浓郁精神内涵的艺术形式。     

应用GA,PSO,ACO算法进行水下自主运载器路径规划(英文)

In this paper,an underwater vehicle was modeled with six dimensional nonlinear equations of motion,controlled by DC motors in all degrees of freedom.Near-optimal trajectories in an energetic environment for underwater vehicles were computed using a numerical solution of a nonlinear optimal control problem(NOCP).An energy performance index as a cost function,which should be minimized,was defined.The resulting problem was a two-point boundary value problem(TPBVP).A genetic algorithm(GA),particle swarm optimization(PSO),and ant colony optimization(ACO) algorithms were applied to solve the resulting TPBVP.Applying an Euler-Lagrange equation to the NOCP,a conjugate gradient penalty method was also adopted to solve the TPBVP.The problem of energetic environments,involving some energy sources,was discussed.Some near-optimal paths were found using a GA,PSO,and ACO algorithms.Finally,the problem of collision avoidance in an energetic environment was also taken into account.     

孟加拉某公路项目路面沥青混凝土配合比设计

通过孟加拉国某公路项目的施工实践,介绍路面沥青混凝土配合比设计情况,根据实验结果,确定最佳配合比及最佳沥青含量及相应参数,保证了工程质量。     

新中国治淮事业的元勋——曾山

无产阶级革命家、新中国部长曾山,是新中国治淮事业的开拓者,是毛泽东的“救灾部长”。在他担任治淮工作委员会主任,领导治准工作中,关心和重用人才,发挥知识分子的特殊作用;提出并实践“人民民主制度是治淮力量的源泉”的思想;曾山的治淮功勋和精神风范永远值得我们怀念和崇敬。     

树立荣辱观,再造图书馆职业精神

所谓馆员职业精神,是指馆员在图书馆长期的工作实践中所形成的一种比较稳定的思想行为风尚,它包括馆员的政治态度、精神风貌、思想情操等意识及行为规范、职业技能的总和。文章论述了图书馆职业精神及其特征,探讨了图书馆职业精神的内涵,分析了构成图书馆职业精神的基本要素。     

Modelling of wave–current interactions at the mouths of the Danube

The target of the present study is the entrance to the Danube Delta in the Black Sea. The wave conditions in this coastal sector are usually significant from an energetic point of view and the relatively strong currents induced there by the outflow from the Danube lead to interactions between waves and currents. This process modifies considerably both the magnitude and direction waves, affecting also coastal navigation and sediment transport patterns. In order to assess the effects of the wave–current interactions, the simulating waves nearshore (SWAN) model was considered for developing a multilevel wave prediction system. Validations against measured data were carried out for each computational level. Five case studies corresponding to the most relevant patterns of the environmental matrix were analyzed. Finally, in order to assess the current effect for a longer timescale, an analysis concerning the variation of the main wave parameters was performed for a 3-month period considering some reference points. The results show that the currents produce considerable changes in the wave field, especially as regards the significant wave heights, mean wave directions and wavelengths. The Benjamin–Feir index was also estimated. The analysis of the variation induced by the current over this spectral shape parameter indicates that, in certain conditions, in the target area the wave heights cannot be considered Rayleigh distributed and freak waves may also occur.     

大面积淤泥质土吹填高程及平整度控制

针对传统吹填不平整、严重积水等问题,结合苍南县江南海涂围垦区吹填及软基处理二期工程Ⅰ标段A2区吹填施工实例进行研究,通过吹填高程的实时动态计算,确定吹填高程,采用进塘管技术及分层吹填、分散布置水门等有效措施保证各吹填分区的验收高程、吹填平整度、吹填区无积水,并起到缩短排距、降低成本、减轻围堰安全压力等作用,确保吹填质量。