The kinetics behavior of methane hydrate formation in the presence of tetrahydrofuran (THF) as promoter was studied. A set of experimental equipment was designe
Alkaline-surfactant-polymer (ASP) flooding using sodium hydroxide as the alkali component to enhance oil recovery in Daqing Oilfield,northeast China has been su
目的 探讨一期同体位前后联合入路手术治疗严重胸腰椎骨折脱位的治疗效果.方法 1998年10月至2005年9月手术治疗胸腰椎骨折脱位192例,对其中34例严重胸腰椎骨折脱位者采用一期同体位前后联合入路.男25例,女9例;年龄18～56岁,平均34.2岁.损伤节段:T11 2例,T12 5例,L1 11例,L2 8例,L3 5例,L4 2例,L4,5 1例.Magerl分型:A3型12例,B1型2例,
Two sand packs were filled with fine glass beads and quartz sand respectively. The characteristics of crosslinked polymer flowing through the sand packs as well
Zeolite beta with a low SiO2/Al2O3 ratio was synthesized by a novel two-step process. The synthesized sample was characterized with XRD,SEM,FTIR,and N2 adsorpti
The flow fields inside conventional and rotary hydrocyclones were simulated respectively. In these simulations,water only and oil-water mixture,with distinctly
The preparation of the iron-based catalysts promoted by cobalt with a small amount of copper and aluminum for the high temperature shift reaction (HTS) with dif
The mechanical behavior of TiNi alloy and Cr12MoV alloy under dynamic impact loading was investigated with a self-made impact testing system. The real-time cont
The factors affecting the development of Sinopec lubricating oil were analyzed in this paper,and an analytic hierarchy process (AHP) model for selecting lubrica