-The influence of different ions in the formation of AI(OH)3 polymorphs has been studied experimentally by promoting stoichiometric reactions between the aluminum salts (A1C13, Al(NO3)3, A12(504)3) and bases (NaOH, KOH, NH4OH). In all cases the polymorphs obtained were a mixture of gibbsite, bayerite and nordstrandite or pseudoboehmite with the exception of the reaction between KOH, or NH4OH an...

India has a very rich diversity and plantkingdom is certainly a treasure house of diverse natural products. One such product from nature is the dye. In this study, natural colorants mainly flavonoids and carotenoids present in the Marigold flower (TageteserectaL.) were extracted using Soxhlet extraction method and other conventional techniques under different operating conditions. Spectrophotom...

1. It was found that the precipitation of collagen fibrils at 37 degrees from mixtures of chondroitin sulphate-protein and tropocollagen at physiological ionic strength and pH takes place in two distinct phases. The first occurs immediately on mixing either at 4 degrees or at 37 degrees , and the second occurs only at 37 degrees and after a lag phase whose magnitude depends on the proportions o...

Increasing eco-consciousness among consumers is creating an expanding niche market for textiles coloured using natural dyes. Natural dyes are derived from different parts of plants, animals (insects and invertebrates) minerals. Although plant sources common, a growing global population makes them compete with food crops. Hence, there need to investigate alternate avenues procuring This research...

Nanopowders/Nanostructures have attracted the attention of engineers and scientists for their tunable properties extended applications. One application nanopowders is nanofluids. Nanofluids are assumed as most preferred next generation coolants stability essential successful implementation. Iron oxide nanoparticles were prepared by sol-gel method using Ferrous sulphate precursors. The character...

Further evidence has been obtained which confirms that foot-and-mouth disease virus contains several structural proteins. By electrophoresis in urea-polyaerylamide gels, virus of type O gave six distinct bands. In sodium dodecyl sulphatepolyacrylamide gels four proteins with molecular weights of 34, 3o, 26 and Iy5 x io 3 were clearly demonstrated. When virus preparations were labelled with a si...

Maghemite and magnetite nanoparticles and nanorode are now losing interests in the field of nanobiotechnology and pharmaceutical for their applications. This paper reports on a hydrothermal process for the synthesis of Fe2 O3 in the γ-phases nanorodes, when the hydrothermal temperature was 100 ̊ C. The uniqueness of the method lies in the use of ferrous ammonium sulphate, hexamine was added as t...

This study investigates the long-term (570 days) performance of alkali-activated slag (AAS) mortar exposed to combined wet-dry cycles and sodium sulphate solutions (i.e. 5 wt% 10 wt%). Physical mechanical characteristics AAS mortars visual appearance, compressive/flexural strength, mass change, capillary porosity, water sorptivity) as well mineralogical chemical parameters were determined using...