Abstract The present study aims at development of a mathematical model for the fixed-bed column adsorption that relates reactor parameters with breakthrough curve. Effects operating like bed height, flow rate, initial adsorbate concentration on were investigated by using various curves. arbitrary constants developed found to be dependent kinetics. proposed showed incredible results (Breakthroug...

1. The present study extends the finding of Krebs & Woodford (1965) that muscle fructose diphosphatase is more sensitive to AMP inhibition than liver fructose diphosphatase. 2. Hen breast fructose diphosphatase has a K(i) for AMP of 0.1mum; the plot of percentage inhibition is non-sigmoid and the reciprocal plot of activity against AMP concentration is sometimes linear. 3. Percentage inhibition...

wandering spleen is an uncommon entity in adults and has been described only rarely with sigmoid volvulus, that rarely affects children and adolescents. it is usually described in adults.wandering spleen characterized by the abnormal location of the spleen, caused by incomplete fusion of the four primary splenic ligaments, allowing the spleen to be mobile within the abdomen.the wandering spleen...

Thoroughbred horses are seasonal mating animals, raised in northern regions or countries. Foals born yearly in spring generally show a typical seasonal compensatory growth pattern, in which their growth rate declines in the first winter and increases in the next spring. In this study, a new empirical adjustment approach is proposed to adjust for this compensatory growth when growth curve equati...

In order to clarify the mechanism of activation of L-threonine deaminase by adenosine diphosphate, the enzyme was purified about 700.fold from sonic extracts of Closlridium tetanomorphum, and kinetic and ADP-binding studies were carried out. Plots of reaction rates against L-threonine concentrations gave a sigmoid curve in the absence of ADP, whereas a hyperbolic curve was obtained in the prese...

Determinants of the recommended dietary allowance (RDA) for vitamin C include the relationship between vitamin C dose and steady-state plasma concentration, bioavailability, urinary excretion, cell concentration, and potential adverse effects. Because current data are inadequate, an in-hospital depletion-repletion study was conducted. Seven healthy volunteers were hospitalized for 4-6 months an...

The L-glycerol-3-phosphate: NAD(P) oxidoreductase (EC 1.1.1.8). referred to as glycerol phosphate dehydrogenase, was purified from extracts of Escherichia coli by a combination of chromatographic procedures. The over-all purification was approximately lOOO-fold and the yield was about 10%. The elution profile from the final DEAE-Sephadex column and zone electrophoresis indicated that the enzyme...

BACKGROUND AND OBJECTIVES As minimally invasive colon and rectal resection has become increasingly prevalent over the past decade, the role that fellowship training plays has become an important question. This analysis examines the learning curve of one fellowship-trained colorectal surgeon in his first 100 cases. METHODS This was a prospectively collected retrospective analysis of the first ...

To the Editor:—I have spent some time considering the conclusions reached by Aubrun et al. in their study investigating the relationship between the pain visual analogue scale (VAS) and morphine requirements in the postanesthesia care unit. They demonstrated that the Hill equation could be used to derive a sigmoid relationship between the pain VAS and morphine dosage, and concluded that this re...