a soil bacterium capable of degrading chitin on chitin agar plates was isolated and identified as bacillus pumilus isolate u5 on the basis of 16s rdna sequence analysis. in order to optimize culture conditions for chitinase production by this bacterium, a two step approach was employed. first, the effects of several medium components were studied using the plackett-burman design. among various ...

background nowadays, adsorption techniques are widely used to remove certain classes of pollutants from water. objectives the aim of this study was to remove ametryn from water solutions by natural zeolite nanoparticles from the semnan region of iran. materials and methods for this purpose zeolite nanoparticles were synthesized from natural zeolite using planetary ball-mill. the zeolite nanopar...

‎Application of Box-Behnken Design and Response Surface Methodology Acid Red 18 Adsorption onto PAC‎ (Synthesized Carrot Waste) Coated with Fe3O4 Nanoparticles from Aquatic Solution: Kinetic Isotherm Studies

The aim of the present study was to investigate the applicability of liquisolid technique in improving the dissolution properties of Valsartan in a solid dosage form. This study was designed to optimize and evaluate the effects of different formulation variables: amount of liquid vehicle (X1), ratio of carrier to coating material(X2) and amount of magnesium oxide(X3) on angle of repose (Y1), ha...