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 […]
The sample was created in two stages, the first stage is preparing a solution of chitosan (CS) powder by adding it gradually to acetic acid placed on the electric magnetic stirrer device with a small magnetic leg in the beaker until we get a homogeneous solution. As for the second stage, preparing a solution of […]
Titanium dioxide (TiO2) nanoparticles (NPs) were synthesized by a simple sol-gel technique. The prepared sample was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), and Brunauer–Emmett–Teller (BET). The results showed that the prepared TiO2 NPs have agglomerated spherical shapes with anatase and rutile phases, […]
Considerable research has been carried out on diabetes mellitus (DM) and many materials have been used to treat the disease. Silver nanoparticles (AgNPs) have been used in many fields in medicine, and have been utilised in the treatment of DM in vivo successfully. In this paper, AgNPs were synthesized using a green method and used […]
This work, discusses the effects of an MRI device on human blood, through evaluating exposure of two human groups electromagnetic radiation emitted from MRI devices during the diagnosis of diseases. The work was carried out at the teaching hospital of Fallujah by taking nine samples of blood from people of different ages ranging 10 – […]
This paper investigates the impact of alpha particle irradiation on the optical characteristics of zinc oxide (ZnO) thin films, which were produced using various concentrations. A zinc oxide thin film was fabricated using the chemical bath deposition (CBD) technique, and glass was selected as the substrate material. A 5 MeV alpha particle beam was emitted […]
The study site suffers from a dearth of prior radiological and environmental investigations, especially after the city of Ramadi’s neighborhoods were subjected to significant military activities. In the current investigation, 15 specimens that were collected from 5 various sites of Ramadi soil in Anbar, western Iraq, were evaluated utilizing gamma (γ) beams spectrum analyses with […]
In this work, copper oxide (CuO) thin films were prepared using the pulsed laser deposition (PLD) technique. The effect of laser beam energy and pulse number on the structural, morphological, and topographical characteristics was investigated. X-ray diffraction (XRD) results indicate the presence of characteristic peaks for CuO with a crystalline growth orientation at the (111) […]
Background: The discovery and development of magnetic resonance imaging (MRI) have completely changed how multiple sclerosis (MS) is diagnosed and treated. Image quality has improved as a result of the development of higher Tesla magnets and rapid fluid-attenuated inversion recovery methods. Additionally, new applications have begun to develop, including as three- and four-dimensional methods: functional […]
Surface plasmon resonance (SPR) is a very sensitive technique for keeping track of changes in the optical properties close to the sensor surface. In the Kretschmann configuration, it can be triggered by an evanescent field resulting from total internal reflection from the rear of the sensor surface. The layers were deposited on the semicircular glass […]
Polyvinyl chloride (PVC) is the most widely product used in a range of industrial and commercial applications due to its high chemical resistance, properties, and low cost. Thin films of polyvinyl chloride were produced using a casting process. Cobalt (60Co) source and radiation doses of (1, 5, 10, 15, and 20) kGy were used for […]
In this work, zinc oxide nanopowders (ZnO-NPs) were synthesized by atmospheric pressure plasma jet and continuous laser diode (CLD) techniques. ZrO2 powder were made up with the ZnO nanopowders to study its effect on ZnO properties. The study initiated with the utilization of the atmospheric pressure plasma jet technique recognized for its capability to generate […]
In this research, the efficiency of the D102-ZnO heterojunction device was evaluated using a quantum model based on electronic transport theory. The electron will move from the excited state D102 indoline-sensitive dye to the wide band gap ZnO. Given the current understanding of the working mechanism of DSSCs, the energy levels of the D102-ZnO heterojunction […]
The study examines the in vitro biological responses to reduced graphene oxide (rGO), and looks at how rGO can be synthesized from Rumex vesicarius leaf extract, a more environmentally friendly approach. A range of spectroscopic and microscopic techniques thoroughly describe the environmentally produced rGO. From the XRD spectral data, a clear 2θ increase to 24.25° […]
Gels of PVA/PVP polymer electrolytes filled with gradient contents of SiO2, MWCNT, and Polythiophene (PTh) were fabricated using a solution casting technique. The electrical conductivity was calculated with an impedance analyzer within the frequency range 50 Hz – 1 MHz at a temperature range 293 – 343 K and has the highest ionic conductivity with […]
