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961.
鲁氏酵母菌WY-3降解甲胺磷的性能 总被引:17,自引:0,他引:17
从污水中分离出一株酵母菌,编号WY-3.该菌能利用甲胺磷(MAP)作唯一氮、磷源生长,也能利用甲胺、乙胺和硫酸铵(硝酸盐和羟胺除外)作氮源生长,它还能适应高浓度(60%)葡萄糖的培养条件,初步鉴定为鲁氏酵母菌(Saccharomyces rouxii).从WY-3菌无细胞抽提液中检测到一种高活力酸性磷酸酶,采用聚丙烯酰胺凝胶电泳活性染色法呈现一条白色谱带.氟化钠试剂可抑制该酶催化MAP释放无机磷,但是不影响该菌代谢MAP脱氨基的性能.MAP经WY-3菌作用后毒性会大大降低,分析其残留物时发现有无机磷和甲醇物质.此外,文中还对酵母菌一类共代谢菌降解MAP的途径进行了探讨. 相似文献
962.
高含氯采油废水CODcr测定质量控制方法研究 总被引:1,自引:0,他引:1
通过对高含氯采油废水CODcr测定过程中因稀释产生的滴定误差和高含氯采油废水现场加标回收率测定结果的分析,提出了适宜高含氯采油废水的质量控制方法,既空白试验值判断法、平行双样法和密码样控制法。 相似文献
963.
家居内的空气污染,是现代生活方式的一种产物,而且,这种污染的程度,会随着人们对新潮物质享受的追求而不断增加。因此,应该及早引导儿童关注身边的污染,并设法减轻它的危害,笔者按照下面的思路引导儿童认识并采取行动:讲述居室空气被有毒气体污染的调查结果并说明污染的成因和危害性;介绍具有净化空气功能的植物;传授几种植物的培植方法,将改善居所空气污染状况的愿望,变成呵护花木的实际行动;以两种植物的长势为例,说明放在居所里的花木,如果生机勃勃,就是它们净化空气功能的体现。对居所存在空气污染的调查美国国家环保局… 相似文献
964.
Jun Wang Jia Li Yingpeng Xie Chengwu Li Guangxi Han Liquan Zhang Rui Xu Xiangdong Zhang 《Journal of environmental management》2010,91(3):677-684
In this work, Er3+:YAlO3/ZnO–TiO2 and ZnO–TiO2 composites were prepared by the ultrasonic dispersion and liquid boiling method. In succession, they were then characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Acid red B as a model dye compound was degraded under solar light irradiation to evaluate the photocatalytic activities of the Er3+:YAlO3/ZnO–TiO2 and ZnO–TiO2 composites. We found that the photocatalytic activity of ZnO–TiO2 composite can be enhanced by adding an appropriate amount of Er3+:YAlO3. We reviewed influencing factors, such as Er3+:YAlO3 content, heat-treated temperature and heat-treated time on the photocatalytic activity of the Er3+:YAlO3/ZnO–TiO2 composites. In addition, the effects of solar light irradiation time, dye initial concentration, Er3+:YAlO3/ZnO–TiO2 amount and solution acidity on the photocatalytic degradation of acid red B dye in aqueous solution were investigated in detail. Simultaneously, the degradation and comparison of other dyes such as methyl orange (MO), rhodamine B (RM-B), azo fuchsine (AF), congo red (CG-R) and methyl blue (MB) were also reviewed. In addition, we attempted to explore both the principle of possible excitation of Er3+:YAlO3/ZnO–TiO2 under solar light irradiation and the mechanism of photocatalytic degradation. 相似文献
965.
966.
灾变危机管理的社会协同问题 总被引:1,自引:1,他引:0
谢俊贵 《防灾科技学院学报》2008,10(2)
灾变危机管理的社会协同是指在强调政府责任的同时,充分依靠多元社会力量的广泛参与和社会联动,既重视规范性行动也重视志愿性行动,以形成一种有秩序、有规则的自组织系统,从而增大灾变危机管理功效的灾变危机管理模式。本文对灾变危机管理为何需要社会协同,何以能够社会协同,如何实现社会协同进行了初步的探讨。 相似文献
967.
解少君 《中国ISO14000认证》2010,(3):22-26
能源法律体系不仅保障能源的有效供给,还承载着低碳和减排的使命,建构合理而可行的、具有低碳内涵的能源法律体系是低碳经济法律体系的重要组成部分,也是低碳法律体系的基础。在将要逐步完善的能源法体系中应基于我国能源结构及其现实禀赋认真全面落实低碳经济的主要制度,将低碳经济规律全面、具体地贯彻和体现在能源法体系中,采取可行的拳措和步骤逐步提升能源法律体系的低碳内涵。 相似文献
968.
Abstract Ground level ozone pollution has become a significant air pollution problem in Beijing. Because of the complex way in which ozone is formed, it is difficult for policy makers to identify optimal control options on a cost-effective basis. This paper identifies and assesses a range of options for addressing this problem. We apply the Ambient Least Cost Model and compare the economic costs of control options, then recommend the most effective sequence to realize pollution control at the lowest cost. The study finds that installing of Stage II gasoline vapor recovery system at Beijing’s 1446 gasoline stations would be the most cost-effective option. Overall, options to reduce ozone pollution by cutting vehicular emissions are much more cost-effective than options to “clean up” coal-fired power plants. 相似文献
969.
Abstract As the protected areas of land and coastal environment, nature reserves are designed to address how to reconcile the conservation of biodiversity, the quest for economic and social development and the maintenance of cultural values. This paper establishes a framework for nature reserve development that seeks to incorporate ecotourism into its strategies. The overall purpose was to identify the information needs required for a comprehensive nature reserve that incorporates ecotourism related values. It also illustrates the utility of this framework in the context of the Wuzhishan Mountain Region of China. A literature review, the first phase of a visionary strategy and a subsequent gap analysis for available management information were undertaken in order to achieve this paper's purpose. Finally, recommendations are presented for integrating ecotourism into nature reserve development in the Wuzhishan Mountain Region. 相似文献
970.
Van Thinh Nguyen Matsumoto Masaru Zaw Myo Kuwahara Yoshihiro Xie Yiping Ozaki Akinori Kurosawa Kiyoshi 《Environmental geochemistry and health》2022,44(10):3249-3263
Environmental Geochemistry and Health - The arsenic-contaminated groundwater has attracted attention in much south and southeast Asian deltas, however, mainly on the deep aquifers. Here, arsenic... 相似文献