ZnO-Cu2O composites were prepared by precipitation technique followed calcination. The composite was characterized scanning electron microscopy (SEM), energy dispersion X-ray (EDX), Fourier transform infra-red (FT-IR) and diffraction (XRD). Band gap of the determined UV-visible reflectance measurement. absorption range shifted to visible region due doping Cu2O. SEM image represented that nanopa...

objective(s): hardystonite (ht) is zn-modified silicate bioceramics with promising results for bone tissue regeneration. however, ht possesses no obvious apatite formation. thus, in this study we incorporated sr and ti into ht to prepare sr-ti-hardystonite (sr-ti-ht) nanocomposite and evaluated its in vitro bioactivity with the purpose of developing a more bioactive bone substitute material. ma...

zinc ions are present in different types of industrial effluents, being responsible for environmental pollution. biosorption is a process in which solids of natural origin are employed for binding heavy metals. it is a promising alternative method to treat heavy metal wastes mainly because of high metal binding capacity. the effect of some important parameters on sorption capacity of cyanobacte...

We have studied the Fourier Transform Infrared (FT-IR) and the Fourier transform Raman (FT-Raman) spectra of stanozolol and oxandrolone, and we have performed quantum chemical calculations based on the density functional theory (DFT) with a B3LYP/6-31G (d, p) level of theory. The FT-IR and FT-Raman spectra were collected in a solid phase. The consistency between the calculated and experimental ...

al2o3-sio2 diphasic gel was synthesized by sol gel route from aluminium nitrate and silicic acid following aqueous phase colloidal interaction. the precursor gel powder was thoroughly characterized by chemical analysis, measurement of surface area and bulk density measurement. the gel powder was further characterized by thermogravimetry, xrd diffraction study of the heat treated samples and sca...

in this work, we investigated synthesis, magnetic properties of silica coated metal ferrite, (cofe2o4)/sio2 and manganese doped cobalt ferrite nanoparticles (mnxco1-xfe2o4 with x= 0.02, 0.04 and 0.06)/sio2 for possible biomedical application. all the ferrites nanoparticles were prepared by co-precipitation method using fecl3.6h2o, cocl2.6h2o and mncl2.2h2o as precursors, and were silica coated ...

As a source of xylan, lignocellulose waste such as wheat bran and aquatic weed Pistia stratiotes were employed, together with potassium nitrate nitrogen source, which optimized using the Box- Behnken design to increase production xylooligosaccharides. The yield xylooligosaccharides increased 2.05- fold in medium than non-optimized medium. produced showed peak at 890-900 cm-1 confirming presence...

Molluscs are important natural sources of many biologically active compounds. Giant snails (Achatina maginata) have been used in folklore medicine to treat liver diseases, anaemia, and constipation among other medicinal uses. The aim this research is extract identify bioactive compounds present Archachatina marginata. Ten giant African land were collected from a snail farm during the dry season...

Plants have a large capacity to transfer water and associated contaminants from soil to atmosphere. We measured the transfer rate for a range of constituents of gasoline that vary in volatility, solubility, and octanol/water partition coefficient. We tested benzene, toluene, ethyl benzene, meta-xylene, 1,2,4-trimethyl benzene, cyclohexene, n-pentane, ethyl ether, n-propyl ether, and t-butyl met...

The system formed between bismuth(III) ion and D-gluconic acid was potentiometrically studied in aqueous solution. Measurements were carried out at 20.0 and 25.060.18C and the ionic strength was maintained at 0.100 M with NaNO . The potentiometric curves 3 showed the release of four protons in addition to the carboxylic one, leading to the formation of complexes with different degrees of deprot...