VP1, a putative alpha-helical antimicrobial peptide (alpha-AMP) inhibited growth of Bacillus subtilis and Escherichia coli at 500microM. The peptide induced stable surface pressure changes in monolayers formed from B. subtilis native lipid extract (circa 4.5mNm(-1)) but transient pressure changes in corresponding E. coli monolayers (circa 1.0mNm(-1)), which led to monolayer disintegration. Synt...

Cetyltrimethylammonium bromide (CTMAB)-bentonite was produced by the exchange of cetyltrimethylammonium (CTMA) cations for inorganic ions on the internal and external surfaces of bentonite. CTMAB-bentonite was used to remove organic contaminants of varying polar character from water. The properties and mechanisms for CTMABbentonite to sorb benzene, toluene, ethylbenzene, nitrobenzene, aniline, ...

This paper deals with a numerical study of free convection in horizontal cylindrical annulus filled fluidsaturated porous medium the presence transverse magnetic field and heat generation or absorption effect. It is assumed that inner outer walls are maintained at constant temperatures Ti To , respectively, as > . In addition to equation, model consists equation motion under Darcy law Boussines...

The stability of carotenoids in puff-dried yellow peach powder during commercial storage under different water activity conditions was studied. results showed that when the corresponding above 0.576, loss adsorbed closely related to crystallinity amorphous sugar matrix. However, adsorption isotherms confirmed by absorption behavior, X-ray diffraction (XRD) pat-terns, and scanning electron micro...

Background & Aims of the Study: Azo dyes are used in industrial processes such as textile industry to produce large quantities of colored effluents that contain organic and non-organic materials. So, effective and efficient treatment of them is important for the environmental protection. The aim of this study was to evaluate the efficiency of powder and granular pumice for the ...

Porous materials adsorb H2 through physisorption, a process which typically has a rather low enthalpy of adsorption (e.g. ca. 4 to 7 kJ mol(-1) for MOFs), thus requiring cryogenic temperatures for hydrogen storage. In this paper, we consider some of the issues associated with the accurate characterisation of the hydrogen adsorption properties of microporous materials. We present comparative gra...

The contribution of variable grain sizes to uranium adsorption/desorption was studied using a sediment from the US DOE Hanford site. The sediment was wet sieved into four size fractions: coarse sand (1-2 mm), medium sand (0.2-1 mm), fine sand (0.053-0.2 mm), and clay/silt fraction (<0.053 mm). For each size fraction and their composite (sediment), batch and flow-cell experiments were performed ...

The adsorption equilibrium isotherms of five phenolic compounds from aqueous solutions onto granular activated carbon (GAC) were studied and modeled. Phenol (Ph), 2-chlorophenol (2-CP), 4-chlorophenol (4-CP), 2,4-dichlorophenol (DCP), and 2,4,6-trichlorophenol (TCP) were chosen for the adsorption tests. To predict the adsorption isotherms and to determine the characteristic parameters for proce...