以低COD/N人工模拟废水为基质,研究移动床生物膜反应器(MBBR)内同步硝化反硝化(SND)过程.进水COD和NH4+-N的质量浓度分别为200 mg/......

该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......

The concentration of total nitrogen (TN) is reported to vary between 20 and 35 mg/L in domestic wastewater. In raw waste......

目的 比较地尔硫(蕈)、罂粟碱及硝酸甘油缓解老年冠状动脉粥样硬化性心脏病(冠心病)患者桡动脉痉挛的能力.方法 2009年7月至2010......

Xylem sap primarily transports water and mineral nutrients such as nitrogen (N) from roots to shoots in vascular plants.......