Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- TÜBİTAK (34)
- Prairie View A&M University (18)
- Brigham Young University (17)
- Macalester College (7)
- University of Tennessee, Knoxville (4)
-
- Embry-Riddle Aeronautical University (3)
- University of South Carolina (3)
- Andrews University (2)
- Boise State University (2)
- Claremont Colleges (2)
- Bridgewater State University (1)
- DePaul University (1)
- Edith Cowan University (1)
- Kennesaw State University (1)
- Old Dominion University (1)
- Purdue University (1)
- University of Denver (1)
- Western Michigan University (1)
- Keyword
-
- Boundary layer flow (2)
- Chemical reaction (2)
- Extreme ultraviolet light (2)
- Graphene (2)
- Heat transfer (2)
-
- Isothermal atmosphere (2)
- MHD (2)
- Magnetic field (2)
- Mass and weight of atmosphere (2)
- Solar cell (2)
- Standard atmosphere (2)
- Stretching sheet (2)
- Temperature (2)
- ALFALFA (1)
- Absorption fluid (1)
- Acoustics Research Group (1)
- Adomian decomposition method (1)
- Aerodynamics (1)
- Aircraft stability and control (1)
- AlPNTs (1)
- Alpha-nucleus potential (1)
- Antimatter (1)
- Argumentation (1)
- Astrophysics (1)
- Atomic layer deposition techniques (1)
- Attenuation coefficients (1)
- Aviation (1)
- B(E2) (1)
- B(M1) (1)
- Battery (1)
- Publication
-
- Turkish Journal of Physics (34)
- Applications and Applied Mathematics: An International Journal (AAM) (18)
- Journal of Undergraduate Research (16)
- Macalester Journal of Physics and Astronomy (7)
- International Journal of Nuclear Security (4)
-
- International Journal of Aviation, Aeronautics, and Aerospace (3)
- Journal of the South Carolina Academy of Science (3)
- Andrews Agenda: Campus News (2)
- McNair Scholars Research Journal (2)
- Australian Journal of Teacher Education (1)
- DePaul Discoveries (1)
- Journal of Aviation Technology and Engineering (1)
- Journal of East Asian Libraries (1)
- Journal of Humanistic Mathematics (1)
- Oglethorpe Journal of Undergraduate Research (1)
- Rocky Mountain Conference on Magnetic Resonance (1)
- The Hilltop Review (1)
- The STEAM Journal (1)
- Undergraduate Review (1)
- Virginia Journal of Science (1)
Articles 91 - 100 of 100
Full-Text Articles in Physical Sciences and Mathematics
Sfp Effect On Majorana Type Solar Neutrinos In The Presence Of Nonstandard Neutrino Interactionssfp Effect On Majorana Type Solar Neutrinos In The Presence Of Nonstandard Neutrino Interactions, Deni̇z Yilmaz
Turkish Journal of Physics
Assuming neutrinos are Majorana particles, neutrino oscillation is examined in the case of spin flavor precession (SFP) and nonstandard neutrino interaction (NSI). It is seen that the combined effect of them (SFP and NSI) is not ignorable for the neutrino oscillation.
Two Common Terminological Mistakes In Scientific Paperstwo Common Terminological Mistakes In Scientific Papers, Şaki̇r Erkoç
Two Common Terminological Mistakes In Scientific Paperstwo Common Terminological Mistakes In Scientific Papers, Şaki̇r Erkoç
Turkish Journal of Physics
null
Deriving The Dyer-Roeder Equation From The Geodesic Deviation Equation Via The Newman-Penrose Null Tetrad, Aly Aly
Undergraduate Review
In this paper we examine the geodesic deviation equation using the Newman-Penrose (N-P) formalism for a flat Friedmann-Lemaitre-Robertson-Walker(FLRW) metric [Carroll,S. (2004), Ryden, B. (2003), Newman Penrose(1962)]. We solved the geodesic deviation equation for angular diameter distance, using the relevant N-P components, and the resulting expression was the Dyer-Roeder equation of cosmology [Ryden, B. (2003)] [Schneider et al.(1992)]. This leads us to believe that we can apply the N-P formalism to a perturbed FLRW metric and find a solvable equation for angular diameter distance [Kling Campbell(2008)]. The perturbed FLRW metric incorporates clumps of matter into a metric that is on average …
A Theoretical Way To Determine Gamma-Ray Mass Attenuation Coefficients Of Materials, Eli̇f Ebru Ermi̇ş, Ercan Pi̇li̇çer, Cüneyt Çeli̇ktaş
A Theoretical Way To Determine Gamma-Ray Mass Attenuation Coefficients Of Materials, Eli̇f Ebru Ermi̇ş, Ercan Pi̇li̇çer, Cüneyt Çeli̇ktaş
Turkish Journal of Physics
The gamma-ray mass attenuation coefficients of various absorber materials such as Ag, Al, Au, Bakelite, Cu, Fe, Pb, Plexiglas, Si, Sn, water, and Zn were determined theoretically at different gamma-ray energies and different absorber thicknesses in order to investigate how the number of gamma photons and their energies affect the calculation of mass attenuation coefficients of the absorbers since no study such a comprehensive work here was encountered. For this purpose, the FLUKA Monte Carlo (MC) and XCOM programs were used. Calculated coefficients were compared to the literature values and found to agree well with them. The FLUKA MC program …
Polaron Effects On The Second-Harmonic Generation In Asymmetrical Semiexponential Quantum Wells, Bo Xiao, Kangxian Guo, Sen Mou, Zhongmin Zhang
Polaron Effects On The Second-Harmonic Generation In Asymmetrical Semiexponential Quantum Wells, Bo Xiao, Kangxian Guo, Sen Mou, Zhongmin Zhang
Turkish Journal of Physics
Polaron effects on the second-harmonic generation (SHG) in asymmetrical semiexponential quantum wells (ASEQWs) are investigated theoretically. By using the framework of the compact-density-matrix approach and iterative method, the analytical expression of the SHG coefficients in ASEQWs is presented. Numerical results are illustrated for a typical GaAs/AlGaAs. By considering the electron--LO--phonon interaction (ELOPI), the energy levels and the wave functions of an electron confined in ASEQWs are obtained. It is found that whether we consider the ELOPI or not, the incident photon frequency $\omega$ and parameters $U_0$ and $\sigma$ also affect the SHG coefficient obviously.
On The Capacitance Of Crystalline Silicon Solar Cells In Steady State, Fabe Idrissa Barro, Moustapha Sane, Bernard Zouma
On The Capacitance Of Crystalline Silicon Solar Cells In Steady State, Fabe Idrissa Barro, Moustapha Sane, Bernard Zouma
Turkish Journal of Physics
In this work, an analytical approach is presented for modeling the capacitance of crystalline silicon solar cells. Based on a one-dimensional modeling of the cell, the excess minority carrier density, the photovoltage, and the capacitance are calculated. The motivation of this work are two-fold: to show base doping density and illumination effects on the capacitance of silicon solar cells, and to propose a determination technique for both dark capacitance and base doping density from C-V characteristics.
Evaluation Of The Global Solar Irradiance In The Vhembe District Of Limpopo Province, South Africa, Using Different Theoretical Modelsevaluation Of The Global Solar Irradiance In The Vhembe District Of Limpopo Province, South Africa, Using Different Theoretical Models, Tshimangadzo Sophie Mulaudzi, Nnditshedzeni Eric Maluta, Vaith Sankaran
Evaluation Of The Global Solar Irradiance In The Vhembe District Of Limpopo Province, South Africa, Using Different Theoretical Modelsevaluation Of The Global Solar Irradiance In The Vhembe District Of Limpopo Province, South Africa, Using Different Theoretical Models, Tshimangadzo Sophie Mulaudzi, Nnditshedzeni Eric Maluta, Vaith Sankaran
Turkish Journal of Physics
An attempt has been made to employ three different theoretical models for the determination of global solar radiation for the climate conditions of the Vhembe district of Limpopo Province in South Africa. The models are: 1) the Angstrom linear-based model, 2) the Hargreaves and Samani (temperature-based) model, and 3) the Garcia model. These models require the following meteorological data inputs: temperature, sunshine hours, and global solar irradiance on the horizontal surface. The regression coefficients from our previous study were also employed in the calculations. A 4-year (2007--2010) global solar irradiance and temperature data set from the Agricultural Research Council and …
A Comparative Study: Synthetic Dyes As Photosensitizers For Dye-Sensitized \\Solar Cellsa Comparative Study: Synthetic Dyes As Photosensitizers For Dye-Sensitized \\Solar Cells, Amal M. Al-Kahlout, Hatem S. El-Ghamri, Naji Al Dahoudi, Taher M. El-Agez, Sofyan A. Taya, Monzir S. Abdel-Latif
A Comparative Study: Synthetic Dyes As Photosensitizers For Dye-Sensitized \\Solar Cellsa Comparative Study: Synthetic Dyes As Photosensitizers For Dye-Sensitized \\Solar Cells, Amal M. Al-Kahlout, Hatem S. El-Ghamri, Naji Al Dahoudi, Taher M. El-Agez, Sofyan A. Taya, Monzir S. Abdel-Latif
Turkish Journal of Physics
In this paper, dye-sensitized solar cells (DSSCs) were fabricated using a zinc oxide (ZnO) semiconducting layer and different synthetic dyes. Eight different synthetic dyes were used to fabricate the DSSCs. Nanocrystalline ZnO powder was coated on transparent conducting fluorine-doped tin oxide glass using the doctor blade method to form a thin layer. The absorption spectra of the synthetic dyes were investigated. DSSCs were characterized with $J$-$V$ characteristic curves. The parameters reflecting the cell performance were calculated. The results revealed that eosin Y dye corresponds to the highest conversion efficiency. The dependence of the sintering temperature and the thicknesses of the …
Nanocrystalline Nio Structure: Preferred Oriented Growthnanocrystalline Nio Structure: Preferred Oriented Growth, Ali Rahmati, Soheila Mardani
Nanocrystalline Nio Structure: Preferred Oriented Growthnanocrystalline Nio Structure: Preferred Oriented Growth, Ali Rahmati, Soheila Mardani
Turkish Journal of Physics
Nickel oxide (NiO) nanostructures were deposited on Si (100), potassium bromide (KBr), and glass slide substrates at room temperature by the evaporation technique. The prepared samples were annealed at temperatures of 400 $^{\circ}$C and 600 $^{\circ}$C in air atmosphere. The structure, morphology, crystalline phase, optical properties, and chemical bonding of nanocrystalline nickel oxide were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), UV-visible absorption spectrum, and FT-IR spectroscopy. XRD results and SEM images showed that nickel oxide nanoparticles have preferred orientation with uniform size distribution. The as-deposited films showed preferred orientation (texture) growth. As the films were annealed, the …
External Magnetic Field Effect On Bifacial Silicon Solar Cell''S Electric Power And Conversion Efficiencyexternal Magnetic Field Effect On Bifacial Silicon Solar Cell''S Electric Power And Conversion Efficiency, Issa Zerbo, Martial Zoungrana, Idrissa Sourabie, Adama Ouedraogo, Bernard Zouma, Dieudonne Joseph Bathiebo
External Magnetic Field Effect On Bifacial Silicon Solar Cell''S Electric Power And Conversion Efficiencyexternal Magnetic Field Effect On Bifacial Silicon Solar Cell''S Electric Power And Conversion Efficiency, Issa Zerbo, Martial Zoungrana, Idrissa Sourabie, Adama Ouedraogo, Bernard Zouma, Dieudonne Joseph Bathiebo
Turkish Journal of Physics
This article presents a modelling study of external magnetic field effect on a bifacial silicon solar cell's electric power and conversion efficiency. After the resolution of the magnetotransport equation and continuity equation of excess minority carriers, we calculate the photocurrent density and the photovoltage and then we deduce the solar cell's electric power before discussing the influence of the magnetic field on those electrical parameters. Using the electric power curves versus junction dynamic velocity we determine the maximum electric power, the operating point of the solar cell, and the conversion efficiency according to magnetic field intensity. The numerical data show …