Salt removal is an important pretreatment step in the purification process of biologically derived 2,3-butanediol and sh......

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Recovering iron and aluminum efficiently is the key route to utilize low-grade high-iron bauxite.Aiming to optimize the ......

Reservoir F4 of Zarzaitine Oilfield in Algeria belongs to medium porosity and medium permeability anticline reservoir wi......

聚合物驱替段塞地层阻力较大,更易发生层间干扰、压制油层动用状况。为均衡动用储层,解决垂向矛盾,进一步提高采收率,针对大庆油田......

采用荧光分光光度计法对检测器及样品的精密度和回收率进行了测定。结果表明，本法的平均变异系数为２．０６７％±１．０７３％，生物样本的精密度均大于标......