Results 11 to 20 of about 1,228,076 (151)
Zhejiang Daxue xuebao. Lixue ban, 2023 采用异位生态组合修复系统研究九龙江支流浦林溪污染水体不同形态磷净化效果及其对磷形态百分比的影响，并分析了异位生态组合修复系统各处理单元水体磷形态与环境因子的相关性。结果表明，异位生态组合修复系统对总磷（TP）、溶解态总磷（DTP）、可溶性正磷酸盐（DP）和颗粒态磷（PP）的平均总去除率分别为84.3%、84.4%、90.8%和78.9%，其中对DP净化效果最好。在异位生态组合修复系统各处理单元中，当原水水体中磷浓度较低时，泥膜共生高效混凝净水系统对TP、DTP和DP的净化效果良好，平均去除率分别可达81.
韩笑羽(HAN Xiaoyu) +10 more
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Relationship between elements in the absorption and purification(富营养化水体中植物的元素吸收与净化能力的关系)
Zhejiang Daxue xuebao. Lixue ban, 2002 研究了不同植物在两种程度富营养化水中对元素的去除率及对富营养化成分的去除率.在重度富营养化水中,蒸腾强度高的植物对水中各成分均具较好的净化效果;而在轻度富营养化水中,所研究的植物间没有共同趋势.另外,可根据不同植物对环境的各自适应方式将其用于净化不同类型的污水.其中,灯芯草和空心菜不需元素补给,在重度和轻度富营养化水中均具较好的净化能力;鸭跖草是耐阴植物,有适度遮荫时净化效果较好;菩提子用于净化重度富营养化水时需补给适量的常量营养元素;芦苇在轻度富营养化水中净化能力较好 ...
GUANBao-hua(关保华) +6 more
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Shuitu Baochi Xuebao, 2022 为了解决白洋淀上游河岸带植被类型单一、生态功能低下等问题,从河岸植被带截留、净化面源污染物的生态功能定位出发,选取2种草本和1种灌木为研究对象,通过模拟径流冲刷试验,研究河岸植被带对氮、磷及泥沙污染物的净化效果。结果表明:(1)与单一灌木相比,单一草本的净化效率更好,狗牙根(Cynodon dactylon)的总磷、总氮和泥沙的净化效率最佳,分别为10.88%,6.96%,34.20%;黑麦草(Lolium perenne)对氨氮和硝氮有较好的净化效果,分别为10.11%和9.54%;(2 ...
赵奕博 +4 more
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中西医结合护理Objective To investigate the effects of L-carnitine supplementation in uremic patients receiving hemodialysis. Methods Totally100 uremic patients undergoing hemodialysis were randomly divided into the control group and observation group according to ...
YOU Huiqin (尤惠琴)
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Gongye shui chuli, 1985 转炉除尘污水的处理,包括水质净化和水质稳定两部分。对水采用化学药剂、磁絮凝及深度净化处理便可达到循环使用的净化要求,而转炉除尘系统循环供水的水质稳定。
赵树峰, 周晓云
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International Journal of Applied Linguistics, EarlyView.ABSTRACT This study examines multilingual practices in research interviews, focusing on English lexical insertions in Chinese‐language research interviews with teachers of Chinese in Australian secondary schools, and treating these code‐switches as analytically meaningful rather than incidental.
Chengwen Yuan, Tianwei Zhang, Gary Bonar
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Policy Studies Journal, EarlyView.ABSTRACT The examination of policy evolution has important practical implications, but current literature often only evaluates changing policy goals and instruments at the macro‐level, overlooking changes that occur at the more granular, micro‐level of policy text.
Graham Ambrose +1 more
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Gongye shui chuli, 2022 利用混合废水耦合微藻培养系统，研究了4种小球藻的生长变化和废水净化能力及影响机制，并对其产生的色素、油脂等高附加值产物进行了测定。结果表明：4种小球藻对单一豆制品原水、奶牛场乳制品原水中的营养物质去除效果不明显；但在混合液耦合微藻系统中，其净化效果显著提高。当豆制品废水、奶牛场乳制品废水体积比为1∶1时，小球藻净化废水中TN、TP的能力最强，并有较高的COD净化能力，TN去除率达到80.3%，TP去除率达到92.41%~95.48%，COD最大去除量为6 555.5 mg/L ...
李冰, 石岩, 吴迪, 李妍
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Poverty &Public Policy, Volume 18, Issue 3, September 2026.ABSTRACT This paper examines the impact of the COVID‐19 pandemic on income and wealth inequality in Switzerland, with a particular focus on poverty dynamics and the role of the social security system. Using newly linked administrative tax data for four large cantons covering over a third of the Swiss population, we track changes in household income and
Oliver Hümbelin +2 more
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Gongye shui chuli, 1998 介绍物理化学法快速净化高浊度工业污水工艺技术和本净水器结构设计原理。重点介绍再生纸造纸污水净化和回用工艺技术的机理及应用实践。证明物化法混凝净化技术与流体力学设计技术的巧妙结合，能成功地处理高浊度无机污水和高浓度有机污水，实现工业用水闭路循环。
廖泰泉
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