国外警用装备及训练介绍——国外警用船艇介绍

（一）概述 警用船艇是水警的主要交通工具和惩治犯罪的有力手段.警用船艇的使用对于建设水上治安防控体系、维护辖区内治安秩序、提高水警处置突发事件的快速反应能力,都将产生积极的推动作用.     

国外警用航空器介绍

一、概述 警用航空器主要是指警用直升机和定翼机.现在各国警察队伍使用的航空器中以直升机居多.典型的警用直升机分为两大类：涡轮发动的和活塞发动的.涡轮直升机通常是指喷气直升飞机,速度和负载能力是其主要优点.活塞直升机能为警察部门提供比较经济的运行.为了减少运行费用,警察部门有时也使用定翼机执勤.警用航空器的使用从能见范围、响应时间和威慑力量等方面都起到了高效支援地面警力的重要作用。     

分级喷水增湿对半干法烟气脱硫效率的影响

研究了增湿水量、增湿水级数以及增湿水分配方式等参数对半干法烟气脱硫效率的影响。得出了一定试验条件下这些参数的优化值，它们分别为：增湿水量30％、三级增湿、递减分配方式。在此优化工况下，可以使塔内和系统脱硫效率分别达到68％和90％以上，比无增湿时分别提高6％和5％左右。     

安全防范与产业需求

近年来．煤矿瓦斯爆炸、火灾、矿难、飞机失事、石油井喷、淮河流域大水灾、食品中毒等重大灾难与事故震撼国人。2004年全国各类安全事故近百万起．死亡近14万人：重庆“12.23”井喷特大事故．导致234人死亡；被世界卫生组织官员警告“猛于”SARS的禽流感也在中国一些地区出现；气象灾害对我国造成的直接经济损失已经占到GDP的30%-6％；     

基于W ebG IS的防震减灾系统研究与设计

开发基于新技术的防震减灾系统以更好地开展大中城市的防震减灾工作是地震工作者亟待解决的重要问题。详细介绍了所开发的基于W ebG IS和人工智能技术的防震减灾信息管理与智能决策支持系统。开发中,以A rcIM S为开发平台,建造了基于GM L(G eography M arkup L anguage)的3层B/S结构(客户端、服务器层、数据库层)的防震减灾W ebG IS体系;采用GM L描述空间数据,构建基于GM L的地理空间数据模型,实现异构数据间的互访;引入A gen t技术,构造出基于多A gen t的智能决策支持系统,通过一系列的A gen t来代替决策支持系统中的功能单元,并以“黑板”为中介,协同A gen t间的工作,以合作求解复杂问题,实现智能化的辅助决策。     

Risk assessment of trace elements in cultured freshwater fishes from Jiangxi province,China

The levels of trace elements (As, Cd, Cr, Cu, Fe, Ni, Pb, Se, and Zn) in eight species of cultured freshwater fishes from Jiangxi province were determined by inductively coupled plasma-mass spectroscopy. All the studied trace element levels in fish muscles from Jiangxi province did not exceed Chinese national standard and European Union standard, and they were often lower than previous studies. The calculated target hazard quotient values for all the studied trace elements in fish samples were much less than 1, suggesting that the studied trace elements in fish muscles from Jiangxi province had not pose obvious health hazards to consumers. As and Cd concentrations in northern snakehead were much higher than that in other fishes, demonstrating that this fish species could be valuable as a bioindicator of As and Cd in environmental surveys. In addition, the highest concentrations of Fe, Zn, and moderate contents of other essential trace elements in crucian carp indicated that crucian carp could be a good nutrient source of essential trace elements for human health.     

全废砖再生轻骨料混凝土试验研究

将废粘土砖加工成粗细骨料,用于配制全废砖再生轻骨料混凝土.检测结果表明：所用废砖粗细骨料属轻骨料范畴,但其吸水率较大,且细骨料级配不良.试验表明：本试验配合比体系中,净水灰比为0.42,体积砂率为50％时最佳;以全废砖配制的再生砖轻骨料混凝土的强度发展规律与普通轻骨料混凝土类似,均有随水泥用量提高而强度提高的趋势,但随着所配制的混凝土强度等级的提高,再生轻骨料混凝土的强度提高趋势下降.以全废砖为骨料适合配制强度等级LC30及以下的再生轻骨料混凝土.     

Field crops (Ipomoea aquatica Forsk. and Brassica chinensis L.) for phytoremediation of cadmium and nitrate co-contaminated soils via rotation with Sedum alfredii Hance

Environmental Science and Pollution Research - Phytoremediation coupled with crop rotation (PCC) is a feasible strategy for remediation of contaminated soil without interrupting crop production....     

Effects of pig manure containing copper and zinc on microbial community assessed via phospholipids in soils

Pig manure (PM) is widely used as an organic fertilizer to increase yields of crops. Excessive application of compost containing relatively great concentrations of copper (Cu) and zinc (Zn) can change soil quality. To clarify the effects of different rates of application and to determine the optimal rate of fertilization, PM containing 1,115 mg Cu kg^?1, dry mass (dm) and 1,497 mg Zn kg^?1, dm was applied to alkaline soil at rates of 0, 11, 22, 44, 88, and 222 g PM kg^?1, dm. Phospholipid fatty acids (PLFAs) were used to assess soil microbial community composition. Application of PM resulted in greater concentrations of total nitrogen (TN), NH₄ ⁺-N, NO₃ ^?-N, total carbon (TC), soil organic matter (SOM) but lesser pH values. Soils with application rates of 88–222 g PM kg^?1, dm had concentrations of total and EDTA-extractable Cu and Zn significantly greater than those in soil without PM, and concentrations of T-Cu and T-Zn in these amended soils exceeded maximum limits set by standards in china. Except in the soil with a rate of 11 g PM kg^?1, dm, total bacterial and fungal PLFAs were directly proportional to rate of application of PM. Biomasses of bacteria and fungi were significantly greater in soils with application rates of 44–222 g PM kg^?1, dm than in the soil without PM. SOM, TC and EDTA-Zn had the most direct influence on soil microbial communities. To improve fertility of soils and maintain quality of soil, rate of application should be 22–44 g PM kg^?1 dm, soil containing Cu and Zn.