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ISSN 2783-1043 · Alzahra University · 320 artikel di indeks
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Investigating the Effect of Environmental Factors on the Thermal Stability of Marine Sediment Microbubbles
This study examines the influence of environmental factors on bubble dynamics, particularly in marine environments. Utilizing the Keller-Miksis mathematical model and numerical simulations, we demonstrate that variations in temperature, surface tension, initial bubble radius, and medium viscosity…
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Numerical Study of Polarization Dynamics in Optical Fibers with a Harmonically Rotating Birefringence Axis using Stokes Vectors Approach
The control and analysis of polarization dynamics in optical fibers in the presence of birefringence are important, particularly for sensitive applications such as quantum communications and optical sensors. This paper investigates the polarization evolution in a single-mode optical fiber with a…
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Time Processing of Signals of NE102 and Stilbene Plastic Scintillator Detectors in Detecting Emission of Beams from Plasma Focus Device
The plasma focus device is a pulsed source of soft X-ray (SXR), hard X-ray (HXR), ion beam, electron beam, and neutrons. In order to detect SXR, HXR, and neutrons, plastic scintillator detectors with different crystals are used. In this study, the spectra of the emitted radiation from the…
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The Strain Effect on the Dirac Fermions Tunneling in the Presence of a Static Electric Potential
In this study, the effect of uniform strain on the tunneling of Dirac fermions in monolayer graphene in the presence of electrostatic potential barriers was investigated. For the calculations, an effective Dirac Hamiltonian including a mass term was employed, and single and double rectangular…
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Highly Sensitive Tantalum-Mediated Plasmonic Sensor based on a D-shaped Photonic Crystal Fiber Incorporating Open-Air Hole
We have proposed and numerically analyzed a highly sensitive microchannel-incorporated D-shaped Photonic Crystal Fiber (PCF)-based Surface Plasmon Resonance (SPR) sensor for the detection of low Refractive Index (RI). The Tantalum (Ta) is deposited on the polished surface of the PCF to induce the…
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Analyzing the Impact of Variables on Hydrogen Peroxide Concentration Generated by Plasma Argon Jet
Determining the concentration of hydrogen peroxide (H₂O₂) produced by argon plasma jets in biological environments is crucial for plasma medical applications, particularly in cancer treatment. This study systematically investigates the operational parameters influencing H₂O₂ production in…
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Investigation of the Solubility of Atorvastatin in Water and Deep Eutectic Solvents Using a Combined Experimental Approach and Molecular Dynamics Simulations
Natural deep eutectic solvents (NADES) have recently attracted significant attention in pharmaceutical and food sciences due to their low cost, low toxicity, biodegradability, and simple preparation. In this study, the solubility behavior of the poorly water-soluble and hydrophobic drug…
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The Investigation of Electronic and Magnetic Properties of Heusler Alloys NaKX2 (X= C, N, O)
The calculations were carried out based on fundamental principles and density functional theory (DFT), using the improved linearized augmented plane-wave method with full potential (FPLAPW), to investigate the structural, electronic, and magnetic properties of NaKX₂ compounds (X = C, N, and O). In…
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Microscopic Imaging of Fine Structures Using TIRM and SPRM Techniques Employing Diffraction Gratings Fabricated from Blu-ray Discs
This paper presents the results of microchip design and microscopic imaging of fine structures using Total Internal Reflection Microscopy (TIRM) and Surface Plasmon Resonance Microscopy (SPRM). These imaging techniques, classified as dark-field microscopy methods, are based on collecting scattered…
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Investigation of the Effects of Electron Density Distribution on the Photonic Band Gap of Two-Dimensional Inhomogeneous Plasma Photonic Crystals
This research adopts a novel approach to theoretically investigate the design of a two-dimensional plasmonic photonic crystal composed of 5×9 arrays of square plasma blocks with an inhomogeneous electron density distribution. The inhomogeneity is implemented by introducing a spatially-dependent…
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Quantum Correlations in Anisotropic Two-Qubit Ising System: Investigating the Effects of Temperature, Magnetic Field, and Interaction Parameters
Quantum entanglement, as one of the most fundamental features of quantum theory, is the primary source of nonclassical correlations between subsystems and plays a crucial role in quantum energy and information transport phenomena. Investigating the thermal behavior of entanglement in simple…
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Thermo-Mechanical Stability of Co/Cu-Doped ZIF-9: A Molecular Dynamics Study
The objective of this research is to systematically investigate the effect of targeted doping with the transition metals cobalt (Co) and copper (Cu) on the thermo-mechanical stability of the zeolitic imidazolate framework ZIF-9 using ReaxFF reactive force field-based Molecular Dynamics (MD)…
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Numerical Analysis of the Electric Potential and Field in Concentric Spherical Grids of an IR-IECF Device and Investigation of Particle Dynamics Using Particle Tracing
In inertial electrostatic confinement (IEC) devices, an electrostatic potential well accelerates ions toward the center of a vacuum chamber, and the grid geometry plays a decisive role in field uniformity and particle trajectories. In this study, the electric potential and field distributions…
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Designing a Broadband Terahertz Metasurface Absorber by Combining Cantor and H Fractals
Designing absorbers in the terahertz (THz) range is crucial due to the lack of naturally absorbing materials in this range. We present a metal-dielectric-metal meta-surface absorber where the top metallic layer of the proposed absorber is composed of Cantor and H fractal geometries. The first three…
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Design of Radiation Shielding in Radiotherapy Using Concrete Composites with Bismuth and Tungsten Heavy Metals
Radiotherapy is one of the effective methods in cancer treatment that uses ionizing radiation to destroy cancer cells, but due to the nature of the radiation used, it has potential risks for healthy tissues and personnel. Therefore, shielding and improving shielding materials are essential to…
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The Effect of BF3 Detector Position on The Bonner Sphere's Response Function: Monte Carlo Method-based Simulation
Neutron spectroscopy is important in various fields such as nuclear research, reactor physics, and selection of appropriate neutron dosimetry instruments. One common method in this area is the Bonner sphere spectrometer system. In this system, the detector response function and, consequently, the…
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Calculating the Dose Received from Primary and Secondary Particles in Proton Therapy for Brain Tumors by Monte Carlo Simulation
Today, proton therapy is considered one of the most effective and advance methods in radiotherapy. In this method, the highest dose delivered to the tissue is at the end of the proton range, which is a unique feature that causes the most damage to the target tissue and the least damage to the…
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Tribological Behavior of Fe Nanoparticle-Doped Hydrogenated Carbon Thin Films Studied via Surface Micromorphology Analysis
In this study, the effect of plasma pressure on the crystalline structure, optical characteristics, and surface morphology of amorphous hydrogenated carbon films containing iron nanoparticles (FeNPs@a-C:H) was investigated. The films were deposited on quartz substrates using radio frequency…
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Comprehensive Theoretical Modeling and Wavefunction Localization Analysis in Twisted Trilayer Graphene
Twisted trilayer graphene has emerged in recent years as a powerful platform for investigating correlated electronic behavior in two‑dimensional materials. The presence of two independent twist interfaces in this system leads to the formation of multiple moiré superlattices, resulting in a rich and…
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Quasiparticle Scattering Transition Probability in P-Wave Superfluid Ultracold Fermi Gas at Bardeen-Cooper-Schrieffer using Bogoliubov Transformation
Superfluidity in ultracold Fermi gases shows different properties compared to Helium-3 and Helium-4 superfluids. The thermodynamic and transport properties of the superfluid differ in each of these regimes. Using Bogoliubov transformations and Wick’s theorem, we calculate the quasiparticle…