Radiotracer experiments are carried out in order to determine the mean residence time (MRT) as well as percentage of dead zone, V dead (%), in an integrated mixer consisting of Rushton and pitched blade turbine (PBT). Conventionally, optimization was performed by varying one parameter and others were held constant (OFAT) which lead to enormous number of experiments. Thus, in this study, a 4-fac...

The effect of short pulsing mixing interruptions on the Aspergillus niger R3 morphology and fermentation performance was studied in 5 l agitated fermenters with double Rushton turbine impellers. A stable increase in the mycelia concentration and higher biomass concentrations at the end of the process were achieved in two continuous mixing fermentations, while in two fermentations with mixing in...

PURPOSE To compare psychophysical Naka-Rushton parameters in retinitis pigmentosa (RP) patients and healthy controls using a flash-on-flash increment threshold paradigm, and to measure changes of these parameters with RP progression. METHODS Sixty-six RP patients and 10 normal subjects were tested, and their maximum response (Rmax), half-saturation intensity (sigma), and slope (n) parameters ...

prevent recurrent central line sepsis. J Infect 2004; 49: 20–22 5. Schwab SJ, Weiss MA, Rushton F et al.Multicenter clinical trial results with the LifeSite hemodialysis access system. Kidney Int 2002; 62: 1026–1033 6. Sissons CH, Wong L, Cutress TW. Inhibition by ethanol of the growth of biofilm and dispersed microcosm dental plaques. Arch Oral Biol 1996; 41: 27–34 7. Laird J, Soutar R, Butche...

From an analysis of the priors used in state-of-the-art algorithms for single image defogging, a new prior is proposed to obtain better atmospheric veil removal. Our hypothesis based on physical model, considering that fog appears denser near horizon rather than close camera. It leads more restoration when depth important, natural rendering. For this purpose, Naka–Rushton function modulate acco...

[PIER89] P. Pierce, " A concurrent file system for a highly parallel mass storage subsystem " ,

The migration of dislocations affects many material properties including deformation, plasticity and electronic properties. In order to understand the mechanism of the motion of dislocations, both experimental and theoretical studies have been performed [1]. It is known that full dislocations such as edge or screw dislocations can dissociate into Shockley partial dislocations, which have higher...

Let A and B be n × m matrices. The matrix B is said to be g-row majorized (respectively g-column majorized) by A, if every row (respectively column) of B, is g-majorized by the corresponding row (respectively column) of A. In this paper all kinds of g-majorization are studied on Mn,m, and the possible structure of their linear preservers will be found. Also all linear operators T : Mn,m ---> Mn...