先期示范院校职业教育教学能力测评实施策略

通过梳理国家示范高职院校等先期建设院校的经验,认为测评实施的策略选择是组建专门领导机构;先培训后测评;分批进行,稳步推进;以项目课程开发为依托;与教师下厂实践相结合;注重测评成果的应用等。     

膜分离腐殖质前后晚期渗滤液可生化性的变化

晚期渗滤液由于含有大量难降解有机物腐殖质,可生化性差,较难处理。采用特定分子量的超滤膜对晚期渗滤液中的腐殖质进行有效的分离,研究了膜分离腐殖质前后渗滤液的可生化性的变化：渗滤液中腐殖质类物质去除率为90．7％,BOD5/COD值提高了6倍,可生物降解的有机物在总有机物中所占比率提高了约4倍。结果表明,分离腐殖质可提高渗滤液的可生化性。     

某炼油厂常减压装置职业卫生学调查

对某炼油厂常减压生产装置进行职业卫生学调查,了解作业场所职业病危害因素及其危害程度.检测结果中硫化氢、二氧化硫、氨、正己烷、甲苯、二甲苯、噪声均符合<工作场所有害因素职业接触限值>标准的要求.     

农业院校环境工程学课程教学改革初探

近几年,各高等院校环境类专业发展迅速,因此环境工程课程成为各校环境专业的主干课程,根据各校特色和实际情况改革传统环境工程学课程教学内容成为环境教育的一个关键问题。针对农业特色在农业院校环境工程学教学内容中的地位和重要作用,对农业院校环境工程学教学过程中存在的问题进行了分析,并对青岛农业大学近几年在环境类专业培养方案调整、课程教学大纲内容、教学手段、教学方法和实践训练方面积累的经验和今后发展方向进行了初步研究探讨。     

Strength characteristics of geosynthetic reinforced mechanically biologically treated waste by triaxial test

Environmental Science and Pollution Research - The reinforcement strength characteristics of mechanically biologically treated (MBT) waste were studied by conducting consolidated undrained triaxial...     

Research on Methods of Ecological Security Assessment of the Middle and Lower Reaches of Liaohe River Based on GIS

1INTRODUCTIONResources and environment crisis are accompanied byincreasing economic development pressures and rapidpopulation growth in many countries of the world(RobSwart,1996).Ecological security is a hotspot.Majorityof scholars have taken in the hot discussions of ecologicalsecurity of different regions,most of which is differentfrom their background of subjects(Alex F.Mc Calla,1999;Xiao Duning,Chen Wenbo and Guo Fuliang,2002).With the development of GIS,GPS,RS and modeltechno…     

IFRP: a hybrid interval-parameter fuzzy robust programming approach for waste management planning under uncertainty

In this study, an interval-parameter fuzzy-robust programming (IFRP) model is developed and applied to the planning of solid waste management systems under uncertainty. As an extension of the existing fuzzy-robust programming and interval-parameter linear programming methods, the IFRP can explicitly address system uncertainties with complex presentations. Parameters in the IFRP model can be represented as interval numbers and/or fuzzy membership functions, such that the uncertainties can be directly communicated into the optimization process and resulting solution. Furthermore, highly uncertain information for the lower and upper bounds of interval parameters that exist due to the complexity of the real world can be effectively handled through introducing the concept of fuzzy boundary interval. Consequently, robustness of the optimization process and solution can be enhanced. Results of the case study indicate that useful solutions for planning municipal solid waste management practices can be generated. They reflect a compromise between optimality and stability of the study system. Willingness to pay higher costs will guarantee the system stability; however, a desire to reduce the costs will run the risk of potential instability of the system. The results also suggest that the proposed hybrid methodology is applicable to practical problems that are associated with highly complex and uncertain information.     

充分发挥政府职能部门作用共同做好防震减灾工作

共同做好防震减灾工作,政府各职能部门要各司其职,各负其责仅靠领导重视及部门之间的密切配合还不够,必须用相应的制度做保证。还要通过不断的加强宣传,在各级领导的思想中树立起“经济建设与防震减灾工作同等重要”的观念。     

上海市城市绿地土壤特性及对雨洪削减效应的影响

研究了上海市5个功能区城市绿地土壤的特性,分析了它们在各功能区的分布规律及造成差异的影响因素,并对上海市利用绿地蓄渗雨洪的潜力进行了计算分析.结果表明,上海市城市绿地土壤质地以粘壤土、砂质粘壤土和壤质粘土为主;城市绿地土壤由于受人为活动的影响,土壤物理性质发生了显著变化,土壤容重增大,孔隙度和渗透性降低,压实现象普遍;土壤的入渗速率差异较大,以文教区和居民生活区为最好,其后依次为公园、商业活动区、道路交通区.对绿地面积比为20%的功能区,在一年一遇的设计暴雨重现期内,绿地蓄渗雨水效果随土壤入渗速率的增大而增大,且下凹式绿地的蓄渗效果明显优于平绿地.     

基于灰色系统GM(1,N)模型的高炉炉尘量的预测

应用灰色系统GM(1,N)模型对高炉冶炼时产生的炉尘量进行预报,以等维新息建模方式建模,同时结合GM(1,N)残差模型对预测值进行修正,以提高预测精度,使相对误差小于3％的命中率达到83．6％,给生产提供相关技术支持,以通过具体操作来达到固体废物减量化的目的。