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 […]
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, […]
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 […]
In this study, a theoretical model was presented to calculate current and current density to investigate the efficiency of the heterogeneous ruthenium 620-TiO2 device using a propanol solvent. This work examines the effect of concentration carriers on the current density and performance of ruthenium 620-TiO2 devices for dye-sensitized solar cells (DSSCs) in the presence of […]
In this study, titanium dioxide (TiO2) nanoparticles are combined with a mixture of polymers (polyvinylalcohol PVA, polyethylene-glycol PEG and polyvinylpyrrolidone PVP). Titanium dioxide (TiO2) NPs was formulation by sol-gel process, nanocomposites were prepared with concentration (1, 5, 10, 15, 20 and 25 wt%). TiO2 NPs after subjecting them to a calcination process at a temperature […]
in the realm of design optimization. This study employs the finite element method (FEM) through COMSOLMultiphysics software (Version 4.0) to simulate direct current discharge plasma within argon gas under vacuum (2×10−1 mbar). The primary objective is to compare the plasma distribution characteristics resulting from two distinct cathode configurations: a planar cathode, and a concave cathode. […]
Some spectroscopic and electronic properties of the bioactive compound were presented using density functional theory (DFT), by depending on Gaussian software and Gauss view 6.0 using the DFT/B3LYP method with 3 – 21G (d, p) basis set. This research concerns the spectroscopic and electronic properties of the 2-ethyl-4-thioamideo pyridine (ETP) compound and UV-Vis and IR […]
Using a hydrothermal technique, the gold (Au)-capped magnetite nanoparticles (Fe3O4) in the current work were created. TEM, SEM and FTIR were used to analyze the characteristics of the Fe3O4-Au MNPs and confirm the accuracy of the synthesized Fe3O4-Au. The size range of (5 – 15) nm was observed for Fe3O4–Au. By using the MTT assay, […]
One of the biological techniques which can be used to create nanoparticles is the green synthesis method. The silver nitrate and the extract of the pepper leaf are employed to create silver nanoparticles. The scanning electron microscope (FE-SEM) revealed that there are findings of silver nanoparticles with diameters ranging from (23 nm) to (73 nm). […]
By using pyrolysis spray technique, tungsten dioxide films doped with gold nanoparticles were successfully deposited on glass and silicon substrates at 320 ◦C. Au-WO3 films were annealed for one hour at 673 (K) and 873 (K). A number of physical characteristics of the prepared and annealed films have been examined using atomic force microscopy, UV-visible […]
