[Determination of seven tire antioxidants and their quinone oxidation products in fine particulate matter by high performance liquid chromatography-tandem mass spectrometry]. [PDF]
Se PuLiu F +5 more
europepmc +1 more source
, 2001 提出一种新型的复合垂直流湿地系统(IVCW),并对其反应动力学和系统的实际流态进行了研究.经过中试的运行试验,得到了系统对COD去除的反应速率方程,由示踪剂试验确定了系统中水流的停留时间分布(RTD),提出RTD的不同是湿地处理效率差异的主要原因,进而运用串联反应器模型和离散流模型两种非理想流态模型,模拟IVCW的实际水流流态 ...
付贵萍,吴振斌,任明迅,贺锋,成水平,Alex Pressl,Reinhard Perfler
core
[Determination of 13 prohibited alkaloids in essential oil-based cosmetics by ultra performance liquid chromatography-tandem mass spectrometry combining QuEChERS purification]. [PDF]
Se PuLiu Z +6 more
europepmc +1 more source
, 2005 油气水高效分离是陆地和海上油田油气生产、输送和存贮上关注的重要问题。中国科学院力学研究所提出了采用螺旋管、梯形管等关键部件组成的集离心、膨胀、重力分离原理于一体的复合式油气水分离器。2004年建成了油气水分离器模拟试验设备,在不同油水配比和不同流量条件下,进行了梯形管和螺旋管的分离性能试验及数值模拟计算,得到了重要分离器部件的设计准则。如在螺旋管设计方面应采用小回转半径,多圈数的螺旋管;在达到大流量与分离目的时,用多个螺旋管并联比串联压降损失小很多;在T型管设计方面,控制垂直管高度 ...
张军 +6 more
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[Case-based teaching with both positive and negative examples in undergraduate analytical chemistry laboratory： determination of six nitrogen-containing pesticides in environmental samples by solid-phase microextraction-high performance liquid chromatography]. [PDF]
Se PuZhang J +4 more
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油井采出液含砂是石油工程中广泛存在的问题,提出了一种新型的旋流器用于分离油井采出液中的微小颗粒。使用实验和数值模拟的方法对旋流器内部流场的特征以及其在去除固相颗粒方面的分离性能进行了研究。结果表明:旋流器内部流场具有独特的中心涡核结构,并在底流口下部的罐体区域形成混乱的次级涡。随着轴向高度的增加,次级涡逐渐消散。对旋流器内的压力和速度分布特征进行的分析验证了旋流器内可以建立稳定的旋流场,并且随着高度的增加,罐体内的流场呈现出均匀性变化的特性。这些综合的流场特征有利于固-液两相的有效分离。此外 ...
陈虎, 张健
core
[Determination of <i>S-</i>enantiomer in linagliptin by supercritical fluid chromatography-ultraviolet detection]. [PDF]
Se PuLi WJ, Jin W, Liu Q, Wang J, LE J.
europepmc +1 more source
[Dynamic stretching promotes osteogenic differentiation of human bone marrow mesenchymal stem cells in three-dimensional culture]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanBai X, Yuan Z, Zhou Y, Lv L.
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[Biomechanical study on the combined effects of femoral component rotational malalignment and osteoporosis in unicompartmental knee arthroplasty]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiZhou T +5 more
europepmc +1 more source
[Preparation of mesoporous covalent organic framework core-shell stationary phase and its application in the analysis of astragaloside Ⅳ content in <i>Astragalus</i>]. [PDF]
Se PuZhao XY +7 more
europepmc +1 more source