At theoretical model of three levels describing Holmium-doped fiber lasers (HDFL) pumped by Laser-diodes 1.15 μm is presented. Based on the model, each of the efficiency, output power depending on fiber core radius, fiber length, and ion concentration of active media were investigated, using the MATLAB program (R 2019 a). The results show that at […]
In this experimental research the adsorption and photocatalytic properties of silica nanoparticles were used to disinfection water against the gram-negative Escherichia coli bacteria. Silica nanoparticles were synthesized by modified Stober method and characterized. TEM image shows that the prepared nanoparticles were spherical with 20-30 nanometers diameter and 4.25 eV bandgap energy. The disc diffusion test […]
Samarium oxide (Sm2O3) and ytterbium oxide (Yb2O3) doped tungsten-tellurite glasses (TWSm), (TWYb) in the forms of 80 (TeO2) – (20-x) (WO3) – x (Sm2O3) and 80 (TeO2) – (20-x) (WO3) – x (Yb2O3) with x = 0, 1.0, 2.0, 3.0, 4.0 and 5.0 mol% were prepared by the melt-quenching technique. The XRD analysis for the […]
In this paper, the applicability of the Machine Learning (ML) technique in predicting the structural characteristics of water exposed by the plasma discharge is studied. For this purpose, the structural characteristics of water including pH, Electrical Conductivity (EC), Oxidation Reduction Potential (ORP), Total Dissolved Solution (TDS), and salt is experimentally measured before and after exposing […]
Aluminum metal matrix composites find applications in several industries, such as aerospace, military, cars, sports equipment, and electronics. The primary bjective of this experimental study is to obtain insights into the microstructural properties of an Al-Zn alloy that has been strengthened with copper. This investigation involved the preparation of an alloy including aluminum and zinc, […]
In this work we studied the radiation shielding features of Li2O-Sb2O3-PbO-GeO2-Cr2O3 glass systems at different energies ranging from 0.284 to 1.33 MeV. The maximum linear attenuation coefficient (LAC) for the germinate glasses is in the order of 0.680-0.707 cm-1 and this is reported at 0.284 MeV, whereas the minimum LAC is observed at 1.33 MeV and varied […]
This study investigates the effects of incorporating gold nanoparticles (Au NPs) into a MEH-PPV polymer on its fluorescent properties. Analysis of the fluorescence spectrum of the polymer reveals a significant increase in fluorescence intensity upon the addition of Au NPs. Further investigation using Laser Induced Fluorescence (LIF) spectra demonstrates that the purified polymer emits light […]
In addition to the fact that waves have been proven in different plasma environments, they have also been investigated under different physical regimes. In this research, the propagation of electromagnetic waves in quantum semiconductor plasma in the presence of a uniform external magnetic field was investigated using the quantum hydro magnetism model. The researches that […]
In the present work, plasma surface interaction for constant mean free path has been investigated by choosing a three-component electronegative warm plasma where electrons are described by non-extensive statistics, and both negative and positive ions by fluid approach. Here, the finite value of ion-neutral collisions, the temperature of negative and positive ions, the mass of […]
Traditional planar iodine-131 whole-body scan (WBS), which is frequently used to find radioiodine-avid metastases in thyroid cancer patients, is regarded as the standard diagnostic method. The constraints of planar iodine-131 whole-body scan in iodine-avid metastases have been addressed using SPECT/CT. The aim of this study was to compare iodine-131 SPECT/CT in the diagnosis of metastasis […]
