In this paper, a method of Micellar Enhanced Ultrafiltration (MEUF) with Hexadecyltrimethylammonium bromide (CTAB) is proposed to remove phosphate ions from treated domestic wastewaters from the reclamation station of University Campus of Toledo (Spain). This technique is able to reach phosphate rejection coefficients higher than 99% (a phosphate concentration in permeate of 1 mg/L if feed conc...

Partial least squares modeling as a powerful multivariate statistical tool was applied tothe simultaneous spectrophotometric determination of silicate and phosphate in aqueoussolutions. The concentration range for silicate and phosphate were 0.02-0.6 and 0.4-3 μg ml-1,respectively. The experimental calibration set was composed with 30 sample solutions using amixture design for two component mix...

Studies were conducted on clindamycin-2-phosphate, a preparation of clindamycin CLDM developed for injection, and the following results were obtained. 1) The concentration of CLDM phosphate and lincomycin (LCM) in sera were measured in rabbits following continuous intravenous infusion of 20 mg/kg over a 60 minute period, and the results were compared in a crossover test. 2) The concentration of...

Successful learning of many aspects in physiology depends on a meaningful understanding of fundamental chemistry concepts. Two conceptual diagnostic questions measured student understanding of the chemical equilibrium underlying calcium and phosphate homeostasis. One question assessed the ability to predict the change in phosphate concentration when calcium ions were added to a saturated calciu...

abstract phosphate is an essential element for plants, animals, and human. mobility and availability of phosphate in the natural systems is controlled by the adsorption-desorption and dissolution-precipitation reactions. iron (hydr)oxides including goethite play an important role in phosphate adsorption reactions in soil. surface area, crystallinity, and morphology of iron (hydr)oxides are the ...

Membrane transport of glucose and intracellular phosphorylation of the sugar are both accelerated by anoxia in the perfused isolated rat heart (Morgan, Randle & Regen, 1959). In isolated rat diaphragm, membrane transport of glucose is accelerated by anoxia, but the effect of anoxia on glucose phosphorylation in this tissue is not known (Randle & Smith, 1958a, b). Crane & Sols (1953) have shown ...

1. Attempts were made to define the role of phosphofructokinase in glycolytic control and the factors regulating the concentration of l-glycerol 3-phosphate in rat epididymal fat pads incubated in vitro. 2. Glycolysis rates were altered by anoxia or by additions of insulin, adrenaline or both to the incubation medium, and the changes in rate were related to changes in the steady-state concentra...