A positive diatomite filter aid was prepared by surface modification.
经表面电荷改性研制出一种表面呈正电性的硅藻土助滤剂,其ζ电位最高可达+49。
The reaction kinetics of positronium o-Ps on MoNi/Al2O3 hydrotreating catalyst was studied by using the positron annihilation spectroscopy for chemical analysis(PASCA).
采用化学分析正电子湮没谱(PASCA)技术研究正电子素(o-Ps)在MoNi/Al2O3加氢催化剂上的反应动力学。
Al/GaSb Contact with Slow Positron Beam;
Al／GaSb异质结的慢正电子研究(英文)
Data corrections in positron emission tomography(PET);
正电子发射断层扫描仪PET中的数据校正常用方法
Image fusion between ~(18)F-deoxyglucose-positron emission tomo graphy and CT in con for mal radiotherapy for non-small-cell lung carcinoma;
氟脱氧葡萄糖正电子发射型体层摄影术在非小细胞肺癌适形放疗中的应用研究
Study and Application of MMH Cation Polymer Drilling Fluid with Low Interfacial Tension;
正电胶阳离子聚合物低界面张力钻井液技术研究
Based on the laboratory experiments, MMH polymer MMH polysulfonate drilling fluids system is developed through analyzing the properties of positive colloid, polymers and polysulfonate muds.
通过对正电胶、聚合物、聚磺钻井液特点进行分析 ,在室内实验的基础上 ,设计研究了 MMH聚合物 - MMH聚磺钻井液体系。
The best horizontal well drilling fluid system is polymer MMH mixing oil system.
水平井钻井液体系 ,以聚合物正电胶混油体系为佳 ,可有效稳定井壁 ,携带岩屑 ,降低摩阻等 ,经室内百次实验优选的钻井液配方 ,经现场塔河油田水平井应用 ,使机械钻速提高了 3～ 4倍。
The results show that, PDMAEMA/PSF hollow fiber NF membrane is positively charged and has better selective separation characterization for inorganic solutions, which shows as .
实验表明:PDMAEMA/PSF中空纤维纳滤膜荷正电,对离子的截留有选择性,对阳离子的截留顺序为:Mg~(2+)>Na~+>K~+,对阴离子的截留顺序为:Cl~->Br~->I~-。