نتایج جستجو برای: silicon oil
تعداد نتایج: 219201 فیلتر نتایج به سال:
to compare the success of patients with ocular hypertension, secondary to pars plana vitrectomy and silicon oil tamponade, who had an ex-press glaucoma filtration device p50 (alcon laboratories, inc. fort worth, texas, usa) to those who had conventional trabeculectomy this study has been performed. the records of 10 eyes of 10 consecutive subjects who had ex-press implants and 9 eyes of 9 conse...
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
The authors demonstrate an optical manipulation mechanism of gas bubbles for microfluidic applications. Air bubbles in a silicone oil medium are manipulated via thermocapillary forces generated by the absorption of a laser in an amorphous silicon thin film. In contrast to previous demonstrations of optically controlled thermally driven bubble movement, transparent liquids can be used, as the th...
High temperature power electronics has become possible with the recent availability of silicon carbide devices. This material, as other wide-bandgap semiconductors, can operate at temperatures above 500°C, whereas silicon is limited to 150-200°C. Applications such as transportation or a deep oil and gas wells drilling can benefit. A few converters operating above 200°C have been demonstrated, b...
This paper addressed the application of new hydrophobic synthesized calcium oxide (CaO) and silicon dioxide (SiO2) nanofluids to low permeability carbonate porous media. Crude oil and plugs were selected from one of oil reservoirs in the west of Iran. The main goal of this paper is comparing the results of improving water-oil relative permeability parameters in low permeability plugs...
A new method is described for the accurate determination of silicon (Si), phosphorus (P), and sulfur (S) in lubricating oil samples using an Agilent 8800 Triple Quadrupole ICP-MS (ICP-QQQ). An optimized oxygen (O2) massshift method provided limits of detection for 28Si, 31P, 32S and 34S of 0.25, 0.01, 0.18 and 0.75 ppb, respectively. The method was successfully applied to the determination of S...
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