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Article
Physics, Applied
Jamshaid Ul Rahman et al.
Summary: This study examines the solutions to nonlinear partial differential equations and ordinary differential equations. Currently, there are no well-known methods for solving nonlinear equations, but different problems can be solved using different approaches like the variation method. In this paper, a new method called the variation iterative method with Laplace transformation is used to find a solution for a highly nonlinear evolution of a simple pendulum.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Physics, Applied
Jamil Abbas Haider et al.
Summary: A computer model of heat transmission in a square cavity was created to understand its consequences. The model focused on the temperature differences between the top and bottom walls causing convection, while the remaining walls were adiabatic. The study used a novel finite volume method with adaptive upwind convection to accurately estimate the two-dimensional steady flow inside the cavity. Research has been conducted on how natural convection affects heat transfer in enclosed areas due to its widespread use in the industrial sector. The study analyzed the mass balance, momentum balance, and energy balance equations of the system.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Physics, Applied
Muhammad Zahid et al.
Summary: Quaternion differential equations (QDEs) are a new type of differential equations that differ from ordinary differential equations. Finding the exponential matrices is important for solving the QDEs. The solution set of QDE, as a result of the noncommutativity of quaternions, is a right free module.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Materials Science, Multidisciplinary
Elchin M. Huseynov et al.
Summary: This study analyzed the thermal parameters of nanocrystalline silicon carbide (3C-SiC) particles at different thermal processing rates. The study investigated the hydroxyl groups on the surface of the particles and determined the specific heat capacity, Gibbs energy, enthalpy, and entropy of the silicon carbide nanoparticles. The experimental results were compared at different thermal processing rates.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Physics, Condensed Matter
O. B. Tagiev et al.
Summary: The study shows that the PL intensity of samples significantly increases with increasing gamma irradiation dose and concentration of Eu2+ ions. Additionally, a blueshift in PL maxima is observed when Ga ions are partially substituted with Al ions, leading to efficient luminescence emission in the green-yellow region.
SOLID STATE COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Elchin M. Huseynov et al.
Summary: The effects of neutron irradiation on paramagnetic centers in nanocrystalline h-BN particles were investigated using EPR spectroscopy. The formation of new paramagnetic centers in h-BN nanoparticles induced by neutron flux was explained by EPR spectra.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Physics, Applied
Jamil Abbas Haider et al.
Summary: Fluid flow in round and noncircular nozzles is a common occurrence in various systems, such as water pipes, large pipe networks, and engine cooling systems. This study utilized the Finite Volume Method to investigate fluid behavior in a rectangular nozzle.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2022)
Article
Physics, Applied
Jamil Abbas Haider et al.
Summary: A heat exchanger is a device that transfers heat energy and computational fluid dynamics (CFD) can effectively analyze heat exchanger systems. This study uses numerical computation and experimental data to analyze the pressure, velocity, and temperature distribution of fluid flow through ducts.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2022)
Article
Physics, Applied
Jamil Abbas Haider et al.
Summary: The study focuses on the mechanical properties of a Rabinowitsch fluid model in a stenosed elliptic conduit using Computational Fluid Dynamics (CFD). The model has various applications in physiology and biomedicine, including blood circulation, sanitary fluid transport, corrosive fluid transfer, and pharmaceutical delivery systems. The Finite Volume Method (FVM) is used to obtain numerical solutions for the elliptic conduit and analyze the effects of different fluid states (dilatant, Newtonian, pseudoplastic) on flow.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2022)
Article
Physics, Applied
Sohail Nadeem et al.
Summary: This study conducted numerical simulations on a two-dimensional rectangular cavity with two square rotating obstacles using commercial software. It analyzed the fluid flow in detail and emphasized the effects of Reynolds number and Prandtl number on convection analysis. The results showed that heat transfer is highly dependent on the Reynolds number and Prandtl number.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2022)
Article
Physics, Applied
Saleem Asghar et al.
Summary: This paper examines the solutions of nonlinear partial differential equations (PDEs) and highlights the lack of established techniques for solving all nonlinear equations. It explores the efficiency of the perturbation method in solving such equations, and presents various techniques that can be used for different types of problems. The paper demonstrates the use of the perturbation technique in solving the zeroth-order Airy equation and finding the Bessel function in a first-order nonhomogeneous differential equation. It suggests that this approach can be applied to nonlinear equations in physics and applied mathematics.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2022)
Article
Physics, Multidisciplinary
Sohail Nadeem et al.
Summary: This research focuses on the mechanical characteristics of a Rabinowitsch fluid model developed through an elliptic duct. The model allows for three different types of flow and is important for understanding peristalsis in physiology and biomedicine.
FRONTIERS IN PHYSICS
(2022)
Article
Multidisciplinary Sciences
S. H. Jabarov et al.
Summary: This work investigates the crystal structure, atomic dynamics, dielectric and electrical properties of the CuInZnSe3 compound. The crystal structure of the compound is found to be cubic with F-43m (216) symmetry. Raman spectroscopy reveals three Raman modes at frequencies of 57, 176, and 217 cm(-1). Dielectric properties, such as dielectric constant, dielectric loss angle, and electrical conductivity, are studied at different temperatures and frequencies.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Physics, Multidisciplinary
T. G. Naghiyev
Summary: This study investigates the (n, p) and (n, alpha) modifications caused by neutrons in AlN nanoparticles at different energies using computer modeling. The effective cross section spectra for the modifications in the Al and N atoms were separately studied, revealing differences in the probable modifications between different types of aluminum and nitrogen atoms.
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
(2021)
Article
Physics, Applied
T. G. Naghiyev
Summary: The study used computer modeling to investigate neutron absorption in nano-Si3N4 particles at different energies. It focused on the absorption properties of silicon and nitrogen atoms, as well as the effective cross-section spectra of neutrons for these atoms.
MODERN PHYSICS LETTERS B
(2021)
Article
Materials Science, Ceramics
Elchin M. Huseynov et al.
Summary: Paramagnetic centers in nanocrystalline boron nitride particles were studied before and after neutron irradiation, with more paramagnetic centers observed in the range of 0.3270-0.3370 T. The formation mechanism of VB and VN vacancies through neutron transmutations was examined in detail.
CERAMICS INTERNATIONAL
(2021)
Article
Physics, Condensed Matter
A. S. Alekperov et al.
Summary: The effect of thermal switching in a layered GeS:Nd single crystal was investigated at various temperatures. The impact of gamma irradiation on the thermal switching was studied at different doses. It was found that low doses of gamma irradiation led to the formation of an ordered structure, resulting in the loss of the thermal switching effect. At higher doses, structure degradation occurred and the crystal lost its photosensitivity, leading to the absence of any thermal switching effect.
Article
Materials Science, Multidisciplinary
Elchin M. Huseynov et al.
Summary: Thermal properties of nanocrystalline silicon carbide particles were studied at different thermal processing rates, determining the kinetical parameters such as heat flux, oxidation reaction rate, and activation energy. The results showed variations in activation energies of nanocrystalline 3C-SiC particles at different thermal processing rates.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Physics, Applied
H. B. Gasimov et al.
Summary: Cu2Te single crystals were grown using the Bridgman method, with investigations on possible phase transitions at different temperatures. Single crystals of (Cu2Te)(2-x)(ZnTe)(x) with various x concentrations were also prepared and their structural properties and phase transitions were studied using XRD in the temperature range of 293-893 K.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2021)
Article
Physics, Applied
T. G. Naghiyev
Summary: The neutron capture processes in AlN nanoparticles were studied using computer modeling, focusing on the separate absorption of neutrons by aluminum and nitrogen atoms. Modeling was done for each stable isotope of Al and N due to differences in effective absorption cross-sections, and effective cross-section spectra for neutron capture by aluminum and nitrogen atoms were compared.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2021)
Article
Astronomy & Astrophysics
T. G. Naghiyev
Summary: Computer modeling was used to study the (n, alpha) transmutations in Si3N4 nanoparticles under the influence of neutrons at different energies. The research found the varying effects of neutrons on different stable isotopes in the nanoparticles.
MODERN PHYSICS LETTERS A
(2021)
Article
Physics, Applied
T. G. Naghiyev et al.
Summary: The solid solutions of CaxBa1-xGa2S4 were synthesized by solid-phase reactions from powder components of CaS, BaS, and Ga2S3, and the temperature-concentration dependences of their Gibbs free energy of formation were determined. Continuous solid solutions were found in these systems, with spinodal decomposition predicted for ordinary temperatures in the solid solutions.
MODERN PHYSICS LETTERS B
(2021)
Article
Physics, Condensed Matter
Saida G. Asadullayeva et al.
Summary: The luminescent compound ZnGa2S4 prepared by solid-state reaction has a tetragonal structure confirmed by X-ray diffraction. Experimental studies on the photoluminescence (PL) emission and excitation spectra, infrared (IR) reflectivity, and Raman scattering of the defective ZnGa2S4 compound reveal high stability and potential for use in light emitting diodes. Analysis of IR reflectance and Raman spectra identifies five modes of optical phonons in ZnGa2S4, with calculations showing sensitivity to S-Se replacement and clearly pronounced energy gaps in the phonon spectrum.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2021)
Article
Physics, Applied
Y. Aliyev et al.
MODERN PHYSICS LETTERS B
(2020)
Article
Physics, Applied
T. G. Naghiyev
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2020)
Article
Physics, Applied
Y. Aliyev et al.
MODERN PHYSICS LETTERS B
(2019)
Article
Physics, Applied
R. S. Madatov et al.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2019)
Article
Physics, Applied
E. G. Asadov et al.
TECHNICAL PHYSICS LETTERS
(2019)
Article
Physics, Condensed Matter
B. G. Tagiyev et al.
PHYSICA B-CONDENSED MATTER
(2015)
Article
Physics, Condensed Matter
B. G. Tagiev et al.
Article
Physics, Condensed Matter
B. G. Tagiev et al.
Article
Physics, Applied
Rauf Sardarly et al.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2011)
Article
Physics, Condensed Matter
E. A. Lebedev et al.
Article
Materials Science, Multidisciplinary
K Okazaki et al.
