延津县农田投能与提高投能效率的途径

延津县农田投能已达到我国中低产地区的农田投能水平,无机能投入已超过全国平均水平.畜力能投入高是该地区农田投能的特点,有机肥能投入低是该地区农田投能中存在的问题.通过适度规模经营、农田基本建设、精耕细作和合理轮作,可以提高农田投能效率.

城郊型成都绿湾农业合作社生态农场的能流分析和提升对策

城郊型农业是一个区域生态系统和经济系统高效耦合协调的农业生态系统。本研究以成都平原一个城郊型农业生态系统绿湾生态农场为例,应用能流分析方法,探讨该农业生态系统的能量输入输出数量、能量流动方向、路径等能流特征,对人工辅助能的输入数量及结构,各子系统的投能效率进行分析,并辅以调控途径和对策探究。结果表明:该农业生态系统是一个生态种养农业系统,农场以有机能投入为主,农作物的光能利用率为0.27%;种植业子系统产投比为0.41,养殖业子系统产投比为1.85;粮食和畜禽产品全部输出到市场,商品率为100%。但该系统存在着种养不配套的问题,农场可通过优化种养结构、实行集约化管理、改变能量投入结构等方式,逐步提高该农场生态系统的光能利用率和能量产投比。

Sustainable Energy Potential in the Egyptian Residential Sector

This paper presents an overview of sustainable energy investment potential in the Egyptian Residential Building sector. It demonstrates an analysis of the problems that faces the residential sector, house hold consumption and overview of the building construction, energy and renovation. The paper summaries the Egyptian EE （energy efficiency） policies and measures and the possibility to uses and finance that face EE and RE （renewable energy） policies to overcome the Barriers to enhance the Egyptian economy specially in the residential sector.

Study on engineering audit based on Valuation

in the bill of quantities mode, audit department how to perform the function of supervision, control the cost of the project, to improve the infrastructure investment efficiency to have the important meaning. This article from the valuation list elements of engineering audit mode based solutions, engineering audit under BOQ valuation mode is put forward from the audit information management, engineering contract claim, audit personnel quality etc..