Los fosfatos de calcio son materiales biocerámicos gran importancia utilizados en el área recubrimientos bioactivos para implantes metálicos. En presente estudio, una muestra fue sintetizada mediante método precipitación química a partir Ca(NO3)2 y (NH4)2HPO4. La técnica difracción rayos-X utilizada realizar un análisis cualitativo cuantitativo las fases cristalinas presentes material los métod...

In the present paper, nanometer scale hydroxyapatite powders with a rod-like shape, were prepared using combined ultrasonic and microwave heating-based method. Subsequent annealing of as-synthesized at 800 ℃ for 2 h produced nanoparticles rectangular granular morphology. The particles characterized X-ray diffraction Fourier transform infrared spectroscopy methods. Also, nanoparticle ...

In this study, we demonstrate the application of newly developed magnetic potassium substituted hydroxyapatite (KHA/Fe3O4) for the extraction of phthalate esters (PE) from water samples. Nanoparticles of KHA were synthesized through an easy alkoxide–based sol–gel technique. The structure of nanocomposite was characterized by X–ray diffraction (XRD), Fourier transform infrared (FTIR) analysis, a...

We presented the results of electrical and optical studies of the properties of InxGa1−xN epitaxial layers (0.060 ≤ x ≤ 0.105) grown by metalorganic vapour phase epitaxy. Resistivity and Hall effect measurements of the samples were carried out at room temperature. Optical properties of the samples were characterized by photoluminescence and optical absorption spectroscopy. The comparison betwee...

CoNd x Fe (2− ) O 4 ( = 0.0–0.05) spinel ferrites are successfully synthesized by mechanical milling using solid‐state reaction. The effects of Nd 3+ ions on structural, microstructure, and magnetic microwave‐absorbing properties samples analyzed. X‐ray diffraction pattern shows a single‐phase cobalt ferrite for all compositions. Refinement the structure that an increase in concentration leads ...

This article discusses the relationship between the divine promises in the Abraham narrative and the use made by this Old Testament material in the New Testament. It is argued that the New Testament's reinterpretation of the Abrahamic Covenant (e.g. relating the promise of blessing to the Gospel of Jesus Christ and applying the promise of multitudinous descendants to the Christian Church) is fu...

in this paper, we study the effects of hall and ion-slip currents on the steady magneto-micropolar of a viscous incompressible and electrically conducting fluid over a horizontal plate by taking in to account the viscous dissipation effects. by means of similarity solutions, deviation of fundamental equations on the assumption of small magnetic reynolds number are solved numerically by using qu...