Results 101 to 110 of about 2,106,309 (183)
[Research on blood viscoelasticity detection based on electrowetting technology]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiWang C, Huo W, Yang L, Huang X, Yang W.
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[Association between periconception maternal cold and heat exposure and the risk of congenital heart disease in offspring in China]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanXu H +10 more
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, 2019 针对垂直流人工湿地脱氮效率低的问题,在垂直流人工湿地不同位置投加释氧材料,以此探究曝气位置对垂直流人工湿地脱氮的影响。结果表明,在湿地下层曝气,TN去除率最高;在湿地上层曝气,NH4^+-N去除率最高。TN的去除率并非完全取决于氨氮的去除率,有机氮的去除也影响着TN去除率。曝气位置还影响湿地脲酶活性,下层曝气的湿地脲酶含量最高,为60.37μg/g;中层曝气的湿地脲酶含量最低,为26.72μg/g。此外 ...
徐栋 +8 more
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[Re-transmission risk prediction of imported Chikungunya fever in Guangdong Province using the SEIR-SEI model]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoXu L, Li K, Yu M, Zhi Q, An S.
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, 2001 建立以亚热带湿生、水生植物为主的十二套下行流—上行流人工湿地系统作为处理城镇生活污水的对策。以其中四套研究其在不同的水力负荷及气候条件下对污水中磷的去除效果。人工湿地系统随处理运行时间的推移趋于稳定 ,对污水中的总磷、无机磷显示较好的净化效率 ,平均去除率在冬季达到 40 %以上 ,夏季达到 60 %以上 ,出水达到国家地面水Ⅲ级标准。水生植物在系统中起到明显作用 ,有植物系统的除磷效率及稳定性均高于无植物对照 ,其中 2号茭白—石菖蒲系统的效果最好 ,总磷平均去除率为 65%。
吴振斌,陈辉蓉,贺锋,成水平,付贵萍,金建明,邱东茹,任明迅
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[Effect of Long-term Exposure to PM<sub>2.5</sub> and Its Chemical Components on Frailty Incidence in Middle-aged and Older Adults in China: A Prospective Cohort Study]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanChen K, Liu Q, Wu C, Yang L, Lin X.
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