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51.
以对硝基苯酚溶液为模拟废水,用自制的"Cu核-Cu2O壳"粒子对其进行光催化氧化试验,考察了光照时间、催化剂用量、对硝基苯酚的初始质量浓度、溶液的pH值和光源等对降解过程的影响。结果表明,对硝基苯酚溶液质量浓度为40 mg.L-1,催化剂投加量为2g.L-1,光照120min后降解率达到95%,降解反应符合一级反应动力学。与其他同类光催化剂相比,"Cu核-Cu2O壳"粒子具有较高的光催化活性,而且光催化过程中有氢氧自由基产生,对对硝基苯酚的降解较彻底。 相似文献
52.
Gaylord V. Skogerboe Thomas L. Huntzinger 《Journal of the American Water Resources Association》1971,7(5):1027-1037
ABSTRACT. Most of Utah's rapid population and industrial expansion is taking place along the western base of the Wasatch Mountains, with consequent increases in water demand. As a part of Utah's “Developing a State Water Plan,” a foundation investigation of the Utah Lake drainage area, which is at the Southern end of the Wasatch Front, was completed which delineated the quantity and quality of the water resources, present water uses, and opportunities for further water conservation. To prepare water budgets, land use data was collected to delineate all areas using water in excess of normal precipitation, which includes agricultural croplands, phreatophytes, open water surfaces, industrial areas, and urban areas. The water budgets were prepared for the time base 1931-1960, but adjusted to physical conditions existing in 1960. The Initial Phase of the Bonneville Unit of the Central Utah Project is presently under construction, with costs expected to exceed 300 million dollars. The principal feature of this project is the exportation of waters from the Colorado River Basin into the Utah Lake drainage area (Great Basin). This importation provides a large number of alternatives for allocation, reallocation of present supplies, and exportation. The possible effects of the Central Utah Project for realizing some of the above alternatives is delineated. Fortunately, the features of this project allow a wide latitude for water management in Utah, thereby facilitating its corporation into a “State Water Plan.” 相似文献
53.
试论环境监测数据审核 总被引:3,自引:0,他引:3
环境监测数据的审核,是质量保证工作的重要环节。文章联系工作实际,指出应从数据的原始性、检测的规范性、检测的时效性、数据的合格性和信息的完整性等方面对数据进行审核。在数据审核中应考虑数据的客观规律和污染指标的关联性。 相似文献
54.
Jeroen van Rooijen 《Journal of Agricultural and Environmental Ethics》1989,2(3):235-240
Knowledge of the backgrounds of students of behaviour working in the field of applied animal behavior science may help us to recognize their influence on conclusions reached in a particular study and on more general points of view. This recognition may result in a speed up of the progress in this science, to the benefit of science and animals. Some types are: (1) Eco-ethologists (ethologists of the hunters-type). They like to stalk healthy wild animals in their natural environment. They are less interested in the abnormal behavior of domestic animals under husbandry circumstances. (2) Behaviorists. These are psychologists that still think in a man-animal dichotomy. They are not interested in animals for their own sake but as models for human behavior. (3) Behavior physiologists. These biologists are not primarily interested in behavior. Because of the type of experiments they perform they have an aversity against animal protectionists. (4) Ethologists of the farmers type. These ethologists want to posses animals, collect animal species, take care of them and breed them. They are able to speak on approximately the same wavelength as farmers as well as animal protectionists. (5) Zootechnicians of the farmers type. These scientists want to make a living out of animals and like to take care for them. They are also able to speak at approximately the same wavelength as farmers and animal protectionists. 相似文献
55.
机电管理是现代化高产高效矿井建设的重要组成部分,建立起一整套与高产高效相配套的管理体系,是加强设备现场管理,实现矿井高产、稳产的有力保证。文章介绍了补连塔煤矿为实现设备的可靠运转,加强机电管理的具体应用。 相似文献
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58.
核桃果皮基活性炭对苯酚吸附的热力学研究 总被引:1,自引:0,他引:1
吸附法因具有处理设备简单、无二次污染等优点广泛应用于废水处理中.以核桃果皮基活性炭为吸附剂,研究其对苯酚吸附的热力学性质.结果表明,温度对吸附无显著影响,在20~60℃范围内,随温度升高,吸附量略有减小;苯酚溶液在酸性至中性条件下的吸附去除率较高.吸附符合经典的Langmuir与Freundlich等温方程,并存在吸附剂和吸附质浓度效应,Langmuir与Freundlich等温方程参数不确定为常数,而是随吸附质质量浓度ρo和吸附剂质量浓度W0变化而变化.研究表明,核桃果皮基活性炭能高效、快速地吸附去除苯酚,是一种有应用前景的净水材料. 相似文献
59.
Neil Stenhouse 《Environmental Communication: A Journal of Nature and Culture》2017,11(6):756-768
The RE-AIM framework, created by Russell Glasgow and colleagues, addresses five major factors involved with sustained population-level effectiveness of public health interventions—Reach, Efficacy and/or Effectiveness, Adoption, Implementation and Maintenance. In this article, I illustrate how the framework might be applied to environmental communication interventions, and discuss how the framework needs to be adapted to important aspects of this context. Following that, I address several potential criticisms of RE-AIM or its usefulness for environmental communication scholars. Finally, I discuss how research practices of environmental communication scholars could be changed in light of the insights given by the RE-AIM framework. Much work remains to be done in order to see exactly how RE-AIM, or other frameworks focused on large-scale intervention effectiveness, can be made most useful to environmental communication scholars. However, RE-AIM already provides a valuable way to start thinking about how to best improve large-scale effectiveness of communication interventions. 相似文献
60.
脱硫石膏改良碱化土壤种植水稻施用量研究 总被引:18,自引:1,他引:17
选择具有典型代表性的宁夏西大滩碱化土壤,采用拉丁方田间试验设计进行脱硫石膏改良碱化土壤种植水稻(Oryza sativa)的施用量研究.试验研究表明施用脱硫石膏能够降低土壤碱化度、总碱度和pH值,提高水稻的出苗率和产量.但是,脱硫石膏施用量不同,土壤碱化度、总碱度和pH值降低的值不同.根据脱硫石膏施用量与土壤碱化度、总碱度、pH值降低的模拟曲线关系,当脱硫石膏施用量为2.8~3.1kg·m~(-2)时,土壤碱化度、总碱度、pH值降低的值达到最大.同时,根据脱硫石膏施用量与水稻出苗率和产量的模拟曲线关系,当脱硫石膏施用量为2.86kg·m~(-2),水稻出苗率达到最大,为84.7%;当脱硫石膏施用量为2.79kg·m~(-2)时,水稻产量达到最大,为0.75kg·m~(-2).因此,建议脱硫石膏改良碱化土壤种植水稻的施用量为2.8~3.1kg·m~(-2). 相似文献