Exact(1)
While the experimental results did not show a uniform trend of oxygen effect at high pressure, model predictions indicate that in high-temperature environments (e.g., >1800 K), ignition is insensitive to the molecular oxygen mole fraction and that combustion is strongly enhanced in oxygen-rich mixtures.
Similar(59)
The high pressure modelling of condensed phases has mainly been a topic for geophysics, but there is an interest in modelling moderate pressure dependence also for materials science and engineering.
According to the scaling criteria of high-pressure model proposed by Pujol and Boberg 1972, the scaling criteria numbers of high-temperature and high-pressure steam stimulation is determined and shown in Table 1.
As we know that the study by Sinclair [ 13] demonstrated that high tidal volume ventilation (25 cc/kg) for 4 hours produced a peak airway pressure about 33 cmH2O in eucapnic group, so we chose the high-pressure models used by others to induce VILI [ 24], which also caused impaired oxygenation and induced an acute lung inflammatory response.
A microsprayer (Model IA-1C, Penn-Century, US) connected to a High Pressure Syringue (Model FMJ-250, Penn-Century, US) was then inserted transorally into the tracheal lumen.
A detailed high pressure fluid model based on thermodynamics of irreversible processes, statistical mechanics as well as kinetic theory of dense gases is used.
The differences observed between the hydrodynamic parameters of the high pressure and model systems suggest that the five dimensionless groups employed are not enough to fully characterize the global bed behavior.
The scale-up method for three-phase fluidized beds hydrodynamics proposed by Safoniuk et al. [M. Safoniuk, J.R. Grace, L. Hackman, C.A. McKnight, Chem. Eng. Sci. 54 (1999) 4961], based upon the principles of dynamic similitude, was tested matching several systems operated at high pressure with model systems operated at atmospheric pressure.
The resulting multilamellar vesicles were calibrated using a single-stage high pressure homogenizer, model APV 2000 (APV, Albertslund, Denmark) in recirculation mode.
Figure 4b, c illustrates shape change in the same fracture after high pressure regime change, modeled by elastic fracture modeling.
Also the high pressure grinding rolls model developed at the Julius Kruttschnitt Mineral Research Centre gives satisfactory predictions using a breakage function derived from impact and compressed bed tests.
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