We study Rayleigh–Taylor instability in both the moderately compressible and weakly compressible regimes. For the two-dimensional single mode case, we find that the dimensionless terminal velocities sand associated Froude numbersd are nearly constant over most of this region of parameter space, as the thermodynamic parameters describing the equation of state are varied. The phenomenological dra...

Roll rates and net flow can be seen as the evolution of ageing accounts receivable Markov chains. They are accepted methodologies to model behavior non-performing consumer loans by buckets predict losses, but we find that quite often they wrongly used interchangeable concepts, although roll track individual across in consecutive months just compare months. We determine their matrices transition...

A technique of directly measuring Venous Flow Rate (VFR) in a large superficial limbvein is described.With this technique, increases in VFR were noted in response to Epinephrine; and decreases inVFR, in response to the anticipation of, and the performance of an alerting mental arithmetic prob-lem.High Ego Strength Ss revealed higher rates of flow than low E.S. Ss at rest and...

Peak expiratory flow rates of 578 Libyan boys and 527 Libyan girls aged 12 to 21 years were determined. The prediction formulae that best describe the data are as follows: Boys: PEFR = 160 X Stature 1.87 Girls: PEFR = 130 X Stature2.44 Statistically significant correlations were found between peak expiratory flow rate (PEFR) and standing height, sitting height, body mass index, body surface are...

In this work, the effects of permeate pressure and feed flow rate on the performance of a composite polyvinyl alcohol (PVA) membrane in the removal of benzene from gasoline by pervaporation (PV) were evaluated. The results indicate the remarkable effect of permeate pressure on membrane performance as reducing permeate pressure (higher vacuum) from 30 to 3 mmHg causes the total flux to increase ...

Peak expiratory flow rates were measured in 124 normal elderly men (55-85 yr) using the Wright's peak flow meter. In the less than 60 yrs age group (n = 32; mean age 57.7 yr) the PEFR was 431 +/- 13 lpm, while for the group greater than 60 yr (mean age 69.0 +/- 6.0; n = 92), the PEFR value was 373 +/- 11 1pm. These values are similar to those reported in other Indian studies, suggesting that th...

Abstract Vortex pumps are usually designed based on its inner flow model. Currently, the models of vortex pump just consider rate at design condition, which results in low efficiency under off-design rates practical engineering. Therefore, main objective this article is to build a model that takes into account impact rates. To reveal mechanism pump, we provide refined field simulations for pump...

The aim of the present study is the prediction of critical conditions (including critical strain and flow stress) for the initiation of dynamic recrystallization during thermo-mechanical processing of plain carbon steels. For this propose, torsion tests were conducted at different temperature (1050, 1100 and 1150˚C) and strain rates (0.002, 0.02 and 0.2/s). All flow curves showed a peak st...

In this study, the effects of oxygen supplementation in different stocking densities of rainbow trout (Oncorhynchus mykiss) on the specific growth rates (SGR), feed conversion ratios (FCR) and survival rates were investigated in a commercial-scale culture system. High density cultures were maintained in a total of nine (12 m3) flow-through systems supplemented with O2. Initial stocking rates fo...