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91.
Zhao Chenxu Lin Xiaojuan Ji Feng Xiong Ping Liu Yao Wang Suting Chen Peng Xu Qing Zhang Li Tao Zexin Xu Aiqiang 《Food and environmental virology》2020,12(4):321-332
Food and Environmental Virology - We present the results of environmental surveillance for poliovirus (PV) and non-poliovirus (NPEV) around the switch from trivalent to bivalent oral polio-vaccine... 相似文献
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利用“生物接触氧化+植物”一体化装置处理城镇污水,试验最终选用悬浮多面球作填料,采用射流曝气,控制进水流量为0.45 m3/h,进水浓度为COD 63~467 mg/L、NH3-N 11.21~52.7 mg/L、TN 28.6 ~63.5mg/L和TP 1.1~6.42 mg/L时,COD、NH3-N、TN和TP的去除率分别达到88%、86%、70%、60%以上,出水COD≤30 mg/L,NH3-N≤5 mg/L、TN≤13 mg/L、TP≤0.5 mg/L.水质优于《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级A标准,具有较好的工程应用前景. 相似文献
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TianTian Xiong Annabelle Austruy Antoine Pierart Muhammad Shahi Eva Schreck Stéphane Mombo Camille Dumat 《环境科学学报(英文版)》2016,28(8):16-27
At the global scale, foliar metal transfer occurs for consumed vegetables cultivated in numerous urban or industrial areas with a polluted atmosphere. However, the kinetics of metal uptake, translocation and involved phytotoxicity was never jointly studied with vegetables exposed to micronic and sub-micronic particles (PM). Different leafy vegetables (lettuces and cabbages) cultivated in RHIZOtest® devices were, therefore, exposed in a greenhouse for 5, 10 and 15 days to various PbO PM doses. The kinetics of transfer and phytotoxicity was assessed in relation to lead concentration and exposure duration. A significant Pb accumulation in leaves (up to 7392 mg/kg dry weight (DW) in lettuce) with translocation to roots was observed. Lead foliar exposure resulted in significant phytotoxicity, lipid composition change, a decrease of plant shoot growth (up to 68.2% in lettuce) and net photosynthesis (up to 58% in lettuce). The phytotoxicity results indicated plant adaptation to Pb and a higher sensitivity of lettuce in comparison with cabbage. Air quality needs, therefore, to be considered for the health and quality of vegetables grown in polluted areas, such as certain megacities (in China, Pakistan, Europe, etc.) and furthermore, to assess the health risks associated with their consumption. 相似文献
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Tonggang Shen Hanchang Shi Huiming Shi He Jing Huilei Xiong 《Frontiers of Environmental Science & Engineering in China》2011,5(1):130-139
To improve the efficiency of nitrogen removal with lower energy consumption, the study of feedforward control was carried
out on a pilot-scale anaerobic-anoxicoxic (AAO) plant for the treatment of municipal wastewater. The effluent qualities of
the pilot plant under different control strategies were investigated. The results indicated that the change of external recycle
was not a suitable approach to regulate the sludge concentration of plug-flow reactors; adjusting the aeration valve and dissolved
oxygen set-point according to ammonia load could overcome the impact of influent fluctuation; and the denitrification potential
could be estimated based on the transit time of anoxic zone and the relative content of carbon resource entering the anoxic
zone. Simple feedforward control strategies for aeration and internal recycle were subsequently proposed and validated. The
nitrogen removal was successfully improved in the pilot plant. The effluent total nitrogen had decreased by 29.9% and was
steadily controlled below 15 mg·L−1. Furthermore, approximately 38% of the energy for aeration had been saved. 相似文献
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Jiachuang Shao Penghui Shao Mingming Peng Min Li Ziwei Yao Xiuqin Xiong Caiting Qiu Yufan Zheng Liming Yang Xubiao Luo 《Frontiers of Environmental Science & Engineering》2023,17(3):33
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水上交通事故分析研究进展 总被引:1,自引:1,他引:0
为更好地开展水上交通事故分析研究,提高我国水上交通安全水平,从船舶风险评估与事故预测、事故分析以及事故及通航安全数据的组织与数据库建立3个方面对国内外的相关研究进行论述和分析。提出以建立水上交通事故时空数据平台为基础,结合数据挖掘和安全工程的理论方法研究事故发生机理,评估事故风险,并将研究事故模拟再现技术作为事故分析的重要技术手段。 相似文献
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Wang Xin Li Yinqiang Lin Mingqing Su Zhinan Liu Xiong Yu Kefu 《Environmental science and pollution research international》2023,30(1):274-286
Environmental Science and Pollution Research - High-latitude coral communities have attracted much attention due to their potential as refuges during global climate change. However, this function... 相似文献