نتایج جستجو برای: magnetic nano particle
تعداد نتایج: 547752 فیلتر نتایج به سال:
sugar beet yield and quality characteristics as affected by magnetic field and silver nano particles
in order to study the effects of magnetic field, silver nano particles and micronutrient fertilizers on sugar beet, an experiment was conducted at razavi research and technology institute, mashhad, iran. experiment carried out with seven treatments based on randomized complete block design with three replications. treatments included (t1) magnetic field and silver nano particles + kemira fertil...
Magnetic particles have been studied with much interest with reference to many engineering applications. Much effort has been devoted to the preparation of nano-sized magnetite particles with well-controlled size and shape. Magnetic bacteria synthesize uniform and nano-sized magnetite particles enveloped by organic lipid membranes. This review discusses recent advances in bacterial magnetite pa...
In this research cobalt ferrite (CoFe2O4) nano-crystalline powders were prepared by simple chemical precipitation method using cobalt sulfate. The CoFe2O4 nanoparticles were characterized by X-ray diffraction, scanning electron microscopy and Fourier transform infra-red spectroscopy. The crystallite size of CoFe2O4 nanoparticles was calculated by Debye–Scherrer formula. The effect of precursor...
Objective(s): In this work, CuO- NiO nano-composites were synthesized via free-surfactant co-precipitation method and then their physiochemical properties, as well as cytotoxicity and antifungal effects, were studied. Methods: The structural and optical properties of CuO-NiO nanostructures were analyzed by X-ray diffraction (XRD), scanning electron micros...
cofe2o4 magnetic nano particles (mnps) were synthesized by an efficient method in aqueous medium with the particle sizes of about 20-50 nm. then, a hybrid nanocomposite of polyaniline (pani)-cofe2o4 mnps has been electrodeposited directly on a stainless steel wire by the potentiostatic method. microscopic images of electrodeposited pani and pani-cofe2o4 nanocomposite coatings were obtained by s...
Based on the modified Landau-Lifshitz-Gilbert equation for an arbitrary Stoner particle under an external magnetic field and a spin-polarized electric current, differential equations for the optimal reversal trajectory, along which the magnetization reversal is the fastest one among all possible reversal routes, are obtained. We show that this is a Euler-Lagrange problem with constrains. The Eu...
in order to study the effects of silver nano particles, magnetic field in corporation with barium, lithium and micronutrient fertilizers on wheat, an experiment was conducted at research farm of razavi research and technology institute in 2008. experiment carried out with eigth treatments based on randomized complete block design with four replications. treatments were including (t1) magnetic f...
nowdays, iron nanoparticles due to their unique characteristics are used in all of sciences and technology. these nano particles due to their electrical, magnetic, optical and catalytic properties and having high area and activity that is promped by their small size and most importantly many scientists from the entire world are interested in their ...
the selective reduction of oximes with sodium borohydride (nabh4) in the presence of nano cu and charcoal was investigated. cu nanoparticles are widely used as catalysts; efficacious catalyst: copper and copper alloy nanometer feature high efficacy and selectivity, and can be used as catalyst in some reactions. we have shown that nabh4 in the presence of charcoal is an efficient protocol for th...
a novel nano – sized manganese (ii) coordination polymer, [{mn(ncs)2(l)(h2o)2}(l)]n , (1) (l- = 4,4'-bipyridine), have been synthesized by a sonochemical process and characterized by scanning electron microscopy (sem), x-ray diffraction (xrd), ir spectroscopy and elemental analysis. direct calcination of the single crystals and nano-sized compound 1 at 400 0c under air atmosphere yields...
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