The effect of CO2 pressure and flow variation on carbon particles spread during pneumoperitoneum: an experimental study

Isotonic saline solution is frequently used in nasal and tracheal lavage. In a previous clinical study, it was found that Ringer-Lactate solution, as a nasal lavage, was better for mucociliary clearance function than isotonic saline solution after nasal septal surgery. In this experimental study, the effects of Ringer-Lactate and isotonic saline solutions on mucociliary clearance of healthy rat tracheal epithelium were investigated by measuring the transport of carbon particles. We found that tracheal segments that were irrigated with Ringer-Lactate had better mucociliary transport than those irrigated with isotonic saline (p = 0.035).

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The Experimental Study on the Changes of Polymer Solution`s Rheological Property in Immediate Vicinity of Wellbore

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.868.517 ◽

2013 ◽

Vol 868 ◽

pp. 517-521 ◽

Cited By ~ 2

Author(s):

Tao Ping Chen ◽

Jin Gun Liu ◽

Qiang Li

Keyword(s):

Experimental Study ◽

Rheological Property ◽

Polymer Solution ◽

Apparent Viscosity ◽

Core Model ◽

Variable Speed ◽

Polymer Model ◽

Polymer Injection ◽

Flow Variation ◽

Natural Degradation

In order to study the near wellbore area of perforated well and after adsorption detention flow variation of rheological property of polymer solution , artificial physics and artificial cylindrical core model 1:10 are used to do experiments. Results indicate that natural degradation processes of polymer solutions, it is plummeting rapidly within 20 day, then reach stability. Near bore the constant speed when the polymer injection and a variable speed injection, the decreasing amplitude of apparent viscosity caused by the shear factor is approximately 22.5%. In the process of adsorption and detain, injecting 0.8pv polymer, model began to produce polymer. About injecting 2.6pv , adsorption and detain reach stability.

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Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010013955x ◽

1995 ◽

Vol 53 ◽

pp. 636-637

Author(s):

Norio Baba ◽

Norihiko Ichise ◽

Syunya Watanabe

Keyword(s):

Experimental Study ◽

Spherical Aberration ◽

Incident Beam ◽

Optical Parameters ◽

Beam Tilting ◽

Illumination Method ◽

Restoration Method ◽

Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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