or indirectly by a multienzyme system consisting of malic enzyme, malic dehydrogenase, and phosphoenolpyruvic carboxykinase (2, 3). However, the physiological significance of these two possible pathways has not been established. Lardy and Ziegler (4) demonstrated that the pyruvic kinase reaction is reversible in the presence of potassium and Meyerhof and Oesper (5) determined the apparent equil...

Equilibrium isotherms and the adsorption kinetics of heavy metals onto chitosan were studied experimentally. Chitosan, a biopolymer produced from crustacean shells, has applications in various areas, particularly in drinking water and wastewater treatment due to its ability to remove metallic ions from solutions. The adsorption capacity of chitosan depends on a number of parameters: deacetylati...

Removal of cesium from synthetic aqueous solution through adsorption on bentonite, under batch equilibrium experimental condition at different values of pH and four temperatures (303, 313, 323, 333 K) was investigated. For this propose the suitability of the Freundlich adsorption model for equilibrium data were investigated. The parameters in the adopted adsorption isotherm models were determin...

A carbonaceous adsorbent (TPC) prepared from Thespusia populinia bark by acid treatment was tested for its efficiency in removing Rhodamine B (RDB). The parameters studied include agitation time, initial dye concentration, carbon dose, pH and temperature. The adsorption followed first order reaction equation and the rate is mainly controlled by intra-particle diffusion. Freundlich and Langmuir ...

Equilibrium binding of insulin to human insulin antibodies from diabetic subjects has been studied by two methods. Results obtained by using a nondissociating gel filtration assay differed from those obtained by a conventional competitive binding method. Both methods yield data consistent with two classes of insulin binding site, having association constants of approximately 10(9) and 10(7) lit...

Equilibrium dialysis studies on the binding of the blood group B-specific Bandeiraea simplicifolia lectin to methyl alpha-D-galactopyranoside demonstrated the existence of one carbohydrate binding site per subunit for the tetrameric protein, with an intrinsic association constant of 8.6 x 10(4) (M) (-1) at 2 degrees and 3.3 x 10(4) (M)(-1) at 20 degrees. These values correspond to a free energy...

The transport of methane molecules into several open-ended carbon nanotubes is studied with classical, nonequilibrium molecular dynamics simulations. The forces in the simulations are determined using a reactive empirical bond order potential for short-ranged interactions and a Lennard-Jones potential for long-range interactions. The simulations show that until the carbon nanotubes are filled w...