Synthesis and characterization of iron cobalt (FECO) nanorods prepared by simple co-precipitation method

We report here a simple synthesis method for iron-cobalt (FeCo) nanoparticles by iron nitrate (FeNO3.9H2O) and cobalt nitrate (CoN2O6.6H2O) as precursor in the presence of ethanol agent and cetyltrimethylammonium bromide (CTAB) surfactant. The samples were characterized by high resolution transmission electron microscopy (HRTEM), field effect scanning electron microscopy (FESEM), X-ray diffraction (XRD) and electron dispersive spectroscopy (EDS) in different temperature. XRD pattern of FeCo samples showed the structure of body center cubic (bcc) structure. The SEM images show that average particle size of as-prepared sample was around 36 nm and annealed samples were around 28 at 800 oC. These images also showed the particles changed from rod-liked shaped to sphere-liked shaped by increasing annealing temperature from room temperature to 800 oC. The TEM studies show the rod-liked shaped particles. The sharp peaks in FTIR spectrum determined the element of Fe-Co nanoparticles.Keywords: FeCo nanoparticles, sodium borohydrid, CTAB, chemical synthesi

Genetic Characterization of Two Iranian Turkoman Horse Populations from Turkoman Sahra and Turkoman Jergelan Regions

This study compares diversity patterns of five microsatellite (SSR) markers in two Iranian native horse populations (Turkoman sahra and Turkoman Jergelan) to infer relationships between them and to compare levels of their polymorphism for use in conservation efforts. Two populations across microsatellite loci had significant deviations from Hardy-Weinberg equilibrium. Average number of alleles were 3.6 and 4 in Turkoman Jergelan and Turkoman sahra, respectively, varying from 3 (HMS1) in Turkoman Jergelan to 6 (ASB2) in Turkoman sahra. AHT4 locus was monomorph in two populations. Average observed and expected heterozygosity was 0.366 and 0.668 for Turkoman Jergelan and 0.316 and 0.685 for Turkoman sahra, respectively. The lower observed rather than expected heterozygosity confirms high inbreeding level in two populations. Estimates of Nei’s Genetic distance showed a low distance (0.0647) between two populations which may be caused by their common ancestor, genetic substructures and gene flow occurrence in Raz and Turkeman sahra regions