the antimicrobial effect of metal nanoparticles such as zinc oxide and silver nanoparticles has been taken into great consideration separately during recent years. the useful application of these nanoparticles in the areas of medicine, biotechnology, and professional prevention of microbes motivated us. the aim of this study was to evaluate antibacterial activity properties of silver doped zinc...

in this research, the inhibitory effects of silver nanoparticles and zinc oxide nanoparticles,  in vitro, on disease stone fruits bacterial canker caused by pseudomonas syrigae pv. syringae and disease bacterial blight caused by xanthomonas arboricola pv. juglandis, were studied. different concentrations of nanoparticles were prepared on mueller hinton agar medium in two different ways in a com...

Quicklime is a widely used industrial chemical and its characteristics may be affected by the limestone calcination temperature. The present study investigated quicklime obtained from after at different temperatures (800, 900, 1000 ℃) six geological-different mines in West Sumatera, Indonesia. X-ray fluorescence (XRF) analysis was performed to characterize elemental compositions quicklime. stoi...

the use of an inorganic phase in water-in-oil (w/o) microemulsion   has   received considerable attention recently for preparing metal oxide   nanoparticles. this is a technique, which allows preparation of ultrafine   metal oxide nanoparticles within the size range 40 to 80 nm. preparation of   nano zno and cr 2 o 3 studied, investigated in the inverse   microemulsion system. therefore the nuc...

Abstract In this research, the effect of calcium oxide (CaO) nanocrystalline particles filled ethylene propylene diene monomer (EPDM) rubber composites is investigated, at different weight percentages (1.0, 2.0, 4.0, and 8 wt%) CaO using two methods mixing. one case conventional mixing on twin roll-mill was used, in other ultrasonic as a pre-mixing applied. are synthesized by precipitation meth...

Abstract: There have been lots of studies to control the poor hydration resistance of dolomite refractories one of themost effective solutions has been the addition of magnesia to doloma. Using a co-clinker of magnesia-doloma as astarting material would provide more homogeneity in the properties of the product and has been published recently.On the other hand, addition of iron oxide to doloma h...

the aim of the present study was to prepare nano-sized calcium fluoride (caf2). calcium fluoride nanoparticles were synthesized by cacl2.6h2o and ammonium fluoride. nanoparticles were synthesized by co-precipitation method. the synthesized nanocrystals were characterized by x-ray diffraction (xrd), fourier transform infrared spectroscopy (ftir), scanning electron microscopy (sem). the crystalli...

The efficiency of biodiesel production from vegetable oils needs to be developed. process transesterification using heterogeneous catalysts has been widely studied replace the role homogeneous catalysts. use BaO promoters into metal oxides increases activity in reactions. This study was conducted provide information about effect concentrations that are filtered calcium oxide (CaO) on reaction t...