The effect of hydroxyl group in hexanol and p-cresol on the carbonyl vibration of representative compounds belonging to methyl methacrylate, ethyl methacrylate and butyl methacrylate in carbon tetrachloride has been studied by FTIR spectroscopic method. The integrated intensities and change in dipole moments for O-H and C=O bonds were calculated. Utilizing Nash method, the formation constant an...

Abstract This paper presents experimental results on the study of effects ejector adiabatic absorber heat and mass transfer binary nanofluid with additives (2-ethyl-1-hexanol gum Arabic). In this case, H 2 O/lithium bromide-alumina was suggested due to a growing interest in absorption working fluid for solar energy application. An setup — test rig designed absorption, heat, rate as result refri...

Objective: Investigations were carried out to isolate bacteria from saline-alkali soils and determined optimized alkaline protease activity and stability produced by a wild strain of bacillus sp. in submerged fermentation (SMF). Methods: Optimum temperature for enzyme activity in the crude extract was 40 ◦C at a pH between 8.0 and 9.0. The studies on pH stability showed that the enzyme...