Gas-lift pumps are devices for lifting liquid phase incorporating the gas phase to be injected in the bottom of liquid column. They are widely used in various industrial applications such as oil extracting in petroleum industries. Gas-liquid flow being the main part of the flow through these systems, flowing in vertical pipes of gas-lift pumps has different regimes namely bubbly, slug, chur...

A Geochemical Approach for Monitoring a CO2 Pilot Site: Rousse, France. A Major Gases, CO2-Carbon Isotopes and Noble Gases Combined Approach — This paper presents the geochemical characterization of various gas end-members involved in a depleted gas field CO2 storage pilot (Rousse, France). In this pilot, CO2 is produced by oxycombustion from natural gas transformed into fuel gas at the Lacq pl...

Sampling and sample introduction are two key steps in quantitative gas chromatography. In this thesis, a development of a previously described sampling technique as well as a novel concept for sample introduction in gas chromatography are presented. The thesis is based on two papers. Paper I describes a method for preparing physically mixed polymers for use as sorbent phases in open tubular tra...

PURPOSE To determine the proper time frame in which to assess retinal attachment status and to evaluate the superior retinal attachment status by performing B-scan ultrasonography in different positions on patients who have undergone pars plana vitrectomy and gas tamoponade. METHODS In this prospective study, 23 patients (23 eyes) who had undergone pars plana vitrectomy and gas tamponade were...

The atmosphere of Titan is mainly made of N2 and CH4. Chemical reactions, induced by solar irradiation and charged particles accelerated in Saturn's magnetosphere, lead to the production of an opaque layer of organic solid aerosols in the atmosphere. The composition and chemical production processes of these aerosols remain mainly unknown and provide a great challenge in planetary science. In o...

A Pease-Anthony Venturi scrubber is a gas cleaning device that uses liquid, injected in the equipment as jets, to remove contaminants from the gas. The liquid jet is atomized into droplets, which are dispersed throughout the equipment due to the turbulence. The performance of the scrubber is affected by the spatial distribution of the droplets. Although CFD models have been used to predict the ...

the experimental study and modeling of gravity drainage during water alternative gas injection, wag process, in carbonate rock for one of the iranian off-shore reservoir at lab-scale were carried out. the mechanism of gravity drainage during the wag process, and its contribution to the oil recovery in the fractured carbonate reservoirs were also studied. in the wag process alternatively gas is ...

We present results of theoretical and experimental study collisional relaxation fast electrons energy in gas. The dependence on the gas pressure p electron ε mean pass Λ injected into a being sufficient to spend ionization all their initial has been calculated. It was found that is directly proportional 2 inversely pressure. To sustain glow discharge with electrostatic confinement electrons, sh...

In this paper we present a new method for the production of bubble-liquid suspensions ~from now on BLS! composed of micron-sized bubbles and with gas to liquid volume ratios larger than unity. We show that the BLS gas fraction l5Qg /Ql , being Qg and Ql the flow rates of gas and liquid, respectively, is controlled by a dimensionless parameter which accounts for the ratio of the gas pressure ins...

In this case, improved vacuum sealing drainage was used for gas gangrene treatment, which is different from traditional therapies of gas gangrene and this is the first report of using improved vacuum sealing drainage to treat gas gangrene. The patient was a 12-year-old Asian Male who was presented to the Emergency Department with a one-day history of left femoral progressing swelling, paining a...