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政府购买农村户用沼气管护服务案例比较分析及对策建议 总被引:1,自引:0,他引:1
政府向社会组织购买公共服务是我国近年来社会管理创新的一项新举措,是解决民生问题的有力渠道。农村户用沼气后续服务体系建设是发挥农村户用沼气能源和环境效益的重要举措,目前我国农村户用沼气后续服务在政府主导下多元化发展,但是没有真正引入市场机制,过度依赖政府,管护机制在创新服务理念和可持续发展出现些问题,强化后续服务体系建设,提高消费者的参与意识,才能切实保证我国农村户用沼气服务体系发展的可持续性。本文在比较分析国内农村户用沼气后续服务模式发展现状和政府购买沼气后续公共服务的基础上,提出当前政府向经营性组织购买服务的建议对策。 相似文献
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宁夏农村沼气服务可持续发展探讨 总被引:1,自引:0,他引:1
农村沼气工程后续管理难的问题,给农村沼气工程的持续发展带来不利影响,全国各地都在积极探索破解途径。宁夏银川市兴庆区明瑞农村新能源服务专业合作社结合本地区实际,立足保证完成沼气用户管路维修、配件更换等基本服务,把服务领域扩展到种植养殖大户粪便清理和住宅小区化粪池清掏,开展绿色有机肥加工和施肥,延长沼气工程产业链,较好地解决了沼气工程管理服务组织自身发展难的问题,有一定的参考价值。 相似文献
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为了保证沼气工程的健康持续发展,达到一次建设多年使用的目的,根据稷山县在沼气后续管理服务工作方面的实际情况,提出一些建议,仅供参考。 相似文献
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市场经济体制下沼气建设基层管理机制探讨 总被引:4,自引:0,他引:4
随着沼气建设的快速发展,户用沼气池数量大幅度增加,沼气池的后续管理和服务问题越来越突出,影响了沼气建设的进展和效益的发挥.针对现状,笔者探索了市场经济体制下沼气建设基层管理机制和模式,引入物业管理的概念,提出了加强户用沼气物业化管理的一些对策. 相似文献
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本文系统分析了农村户用沼气可能存在的环境与可持续发展风险问题。沼肥其存在的环境风险主要包括由致病微生物、配合饲料和兽药所引起的疾病传染风险、重金属污染风险和抗生素污染风险。沼气可持续发展风险主要包括沼气发酵原料短缺风险、常温发酵风险、沼气泄露风险及沼气后续服务与管理滞后风险。提出了开展沼肥中有毒物质的环境风险评价,建立沼肥安全利用标准及对农村沼气用户进行沼气安全培训等对策,以期推动我国农村户用沼气的持续、健康发展。 相似文献
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《Journal of Agricultural Engineering Research》1998,69(3):249-254
A model to represent the discolouration of dried powder of carrots as a function of temperature was developed. Two types of carrots, Asian and European, containing large amount of lycopene and β-carotene, respectively, were tested. The dried powder was stored under an atmosphere with O2and at three different temperatures, 5,20 and 35°C. The surface colour of the powder was monitored during storage by a Hunter colour ratioa/b. In the proposed model, the rate of oxidation was assumed to be represented by the product of the fraction of concentration of oxidized pigment at arbitrary time and a specific rate of oxidation of pigment. The rate parameters in the proposed model were calculated by fitting the experimental data with smooth curves by trial and error at the end of the induction period but before discolouration took place. The frequency constant and activation energy, expressing the temperature dependence of the rate parameters, were expressed by the Arrhenius relation. The simulation results of a Hunter colour ratioa/bof dried powder at 25°C showed good agreement with the experimental data, suggesting that the proposed model was effective for the prediction of discolouration of dried powder of both types of carrot. The use of the induction period in the manner described may enable the shelf life of dried powder to be predicted. 相似文献
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感官检验棉花的品级,这是农村常见的一种检测手段.它的一个主要特点就是存在不确定性.这是由于检验员的品级检验水平存在一定的差异,其中有很多因素制约着检验的结果.文章对影响感官检验结果的因素进行了系统的分析. 相似文献
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The fractional outflow rate of water from the rumen, measured as the rate of disappearance of the chromium complex of ethylenediamine tetra-acetic acid, was related to a number of dietary factors. A multiple regression equation was derived which expressed fractional outflow rate as a function of the intakes of dry matter, ash, acid-detergent fibre and crude protein.The data analysed consisted of 243 observations for sheep on 59 diets, including forage, concentrate and mixed diets. The ranges covered by the data were: fractional outflow rate 0.7–3.6 day?1; dry matter intake 560–1400g/day; ash 4–30%, acid-detergent fibre 7–41%, crude protein 5–26 % of dry matter; there were no observations for sheep of less than 34 kg liveweight.The equation accounted for 56·3 % of the total variance. Between-sheep variance could not be calculated for the whole of the data but was undoubtedly substantial since, for a sixth of the data, it was known to account for 38 % of the total variance. 相似文献
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从灾害经济学的角度探讨了城镇供水优化调度的必要性和可能性,认为在缺水不可避免的情况下,对供水进行优化调度可以减小缺水带来的损失,产生较好的减灾效益,特别是可以大大减小严重干旱的灾害效应。并根据水资源的特性,提出了缺水损失的计算模式以及优化调度的原则和方法。 相似文献