A bacterial strain (designated as Alcaligenes sp. MS-103) isolated from oil sample of the Aghajari oilfield in the south of Iran, was able to produce an effective extracellular lipopolysaccharide biosurfactant (1.2±0.05 g/l) on molasses as a sole carbon source. The highest surface tension reduction to level 20 mN/m was achieved by biosurfactant produced by cells grown on molasses under optimum ...

a bacterial strain (designated as alcaligenes sp. ms-103) isolated from oil sample of the aghajari oilfield in the south of iran, was able to produce an effective extracellular lipopolysaccharide biosurfactant (1.2±0.05 g/l) on molasses as a sole carbon source. the highest surface tension reduction to level 20 mn/m was achieved by biosurfactant produced by cells grown on molasses under optimum ...

In this paper, the potentials of using particles, especially nanoparticles, in enhanced oil recovery is investigated. The effect of different nanoparticles on wettability alteration, which is an important method to increase oil recovery from oil-wet reservoirs, is reviewed. The effect of different kinds of particles, namely solid inorganic particles, hydrophilic or hydrophobic nanoparticles, an...

Lena Wijk (2017): Enhanced Recovery After Hysterectomy. Örebro Studies in Medicine 164. Objectives: To study recovery after hysterectomy under Enhanced Recovery After Surgery (ERAS) care, and in relation to different operation techniques. Materials and Methods: An observational study was conducted comparing 85 patients undergoing hysterectomy with ERAS care to 120 patients immediately before es...

Lena Wijk (2017): Enhanced Recovery After Hysterectomy. Örebro Studies in Medicine 164. Objectives: To study recovery after hysterectomy under Enhanced Recovery After Surgery (ERAS) care, and in relation to different operation techniques. Materials and Methods: An observational study was conducted comparing 85 patients undergoing hysterectomy with ERAS care to 120 patients immediately before es...

The performance of petroleum recovery methods is dependent on the characteristics of the reservoir rock, oil quality, and formation water. One fundamental feature for considering petroleum recovery methods is the wettability of the rock reservoir. Also, this feature impacts the displacement of fluids in the rock reservior. In the case of the limestone, which normally features oil wettability, e...