Article
Chemistry, Physical
Z. R. Khan, Abdullah S. Alshammari, Mohd Shkir
Summary: This work presents the synthesis of Cd1-xZnxS nanostructured thin films on glass substrates via spray pyrolysis technique. The incorporation of Zn in the CdS matrix widens the band gap and improves the nonlinear optical properties of the films. The Cd1-xZnxS films exhibit remarkable visible light photodetection, with high external quantum efficiency, detectivity, and responsivity.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Faisal Almisned, Iskender Akkurt, Nurdan Karpuz
Summary: In this study, cross sections of medical radioisotopes were calculated using level density models. The results were compared with experimental data and it was found that the GSM level density models generally yielded consistent conclusions.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
A. Khallouqi, A. Halimi, O. El Rhazouani
Summary: A pediatric head phantom made of epoxy resin was used to evaluate radiation exposure in CT scans. The phantom demonstrated dosimetric properties comparable to commercially available phantoms, making it a practical and economical option for assessing radiation dose in children.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Irabati Chakraborty, Nidhi Sinha, Bobby Antony
Summary: This article investigates the electron impact ionization of prebiotic molecules within the interstellar medium. By calculating the electron impact ionization cross section, the study provides insights into the chemistry of these molecules and their interaction with electrons, which play a vital role in the emergence of life's essential building blocks.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
M. J. Leotlela
Summary: This article presents the results of radiochemical events/processes that occur when water is exposed to ionising radiation of charged particles (beta and alpha-particles). The idea of cogeneration becomes even more lucrative if we consider that hydrogen energy generation is clean (also known as green energy) because of its insignificant contribution to environmental pollution. These results supplement the fluctuation in effective dose theory/hypothesis of a previous study on time-dependent variations in the radiological health impact of an interim SNFS facility presented in 2021 (Leotlela, 2021).
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Hassan Salah, Mohammed Alkhorayef, Layal Jambi, Mohammed Almuwanis, Abdelmoneim Sulieman
Summary: Cardiovascular nuclear medicine imaging examinations expose patients to high doses of ionizing radiation. This study assessed the radiation doses and public exposure in cardiac rest and stress SPECT scans. The effective dose from cardiac stress was higher than previous studies, which may be influenced by clinical indication imaging protocols and radiation safety measures.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Leandro Barbosa da Silveira Gatto, Delson Braz, Leonardo Pacifico, Paulo Travassos, Luis Alexandre Goncalves Magalhaes
Summary: This study evaluated the mean glandular dose (MGD) in mammography using a computed radiography (CR) system with a solid-state detector. Irradiations and simulations were conducted to determine the MGD and spectra for the same conditions. The results showed that the glandular dose was below the acceptable levels and the spectra were mostly in accordance with the literature.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
C. V. Vishnu, Antony Joseph
Summary: This study investigated the gamma-ray shielding properties of composite materials made from natural rubber with different proportions of Barium Tungstate. The addition of Barium Tungstate significantly improved the characteristics of gamma radiation shielding. The experimental measurements showed good agreement with theoretical calculations obtained from simulation results.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Maria Demeter, Ion Calina, Anca Scarisoreanu, Valentina Mitran, Marcela Popa, Anisoara Cimpean, Mariana Carmen Chifiriuc, Marin Micutz, Elena Matei, Bogdana Mitu
Summary: Novel biocompatible composite hydrogels with good elastic and antimicrobial properties were synthesized by e-beam cross-linking using chitosan, water-soluble polymers, and silver nanoparticles (AgNP). The composite hydrogels showed high stability, absorption capability specific to infected wounds, and biocompatibility. The antimicrobial activity was influenced by the amount of AgNP and cross-linking degree, with significant inhibition against Gram-negative bacteria.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
George Adu-Okyere, Vincent Yao Agbodemegbe, Isaac Kwasi Baidoo, Henry Cecil Odoi, Edward Shitsi
Summary: This study investigates the irradiation channel of the Ghana Research Reactor-1 using a multi-capsule scheme and different methods to extend and improve its utilization. The results provide information on the flux of thermal, epithermal, and fast neutrons, as well as the neutron shaping factor, alpha. The study also validates the experimental results through a verification protocol using reference materials.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Anuor AT. Ayoub, Yushou Song, Mamoun IA. Sagiroun
Summary: This paper presents an assessment of the radiological hazard for humans from nuclear power plant effluent released into a river under normal operation scenarios. The study concludes that the radiological hazard from this effluent is minimal and within acceptable limits according to international standards. It also highlights the potential hazards related to the higher concentration of 137Cs in sediments over time.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Derya Mutlu, Idris Karagoz, Harun Sepetcioglu, Urkiye Akar Tarim, Orhan Gurler
Summary: This study examined the properties of epoxy composites with dendritic copper particles and found that the addition of copper particles improved the electrical conductivity and mechanical properties of the composites. The glass transition temperature of the composites could be adjusted by varying the copper particle ratio. The study also evaluated the shielding properties of epoxy-based composites against gamma radiation and found that the addition of copper particles significantly altered the microstructure and mechanical properties of the composites.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Hani H. Negm, Elhassan A. Allam, Eslam Abdeltwab, Massaud Mostafa, Mohamed E. Mahmoud, Atef El-Taher
Summary: The radiation shielding properties of nanocomposites made from attapulgite and different concentrations of copper oxide and magnetite have been investigated. The results show that the nanocomposites with higher magnetite concentration have better shielding qualities against gamma-rays and neutrons.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Shokufeh Saeid, Neda Mollakhalili-meybodi, Fateme Akrami Mohajeri, Farzan Madadizadeh, Elham Khalili Sadrabad
Summary: This study found that gamma irradiation significantly reduces the saponin and phytic acid content of quinoa. At a dose of 2.5 kGy, it can effectively reduce saponin and phytic acid without significantly damaging the antioxidant compounds.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
M. Y. Shoeib, Doaa A. Ahmed, A. F. Abd-Elraheem
Summary: The research aims to measure and analyze the levels of radon concentration, radium concentration, and radon exhalation rates in geopolymer cement mixes, and assess their impact on indoor air quality. Results indicate that geopolymer cement materials are safe for use in construction, except for specific mixes.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Maipelo Nyepetsi, Olayinka A. Oyetunji, Foster Mbaiwa
Summary: Biodiesel, a potential alternative to fossil-based fuels, has limitations such as high viscosity, pour point, and cloud point. This study used ReaxFF molecular dynamics to investigate the decarboxylation of methyl palmitate using different catalysts. The presence of alpha-NiMoO4 and beta-NiMoO4 accelerated the reactions and resulted in higher quantities of stable products. Ni3Mo catalyst showed an initial rapid formation of products followed by a decrease. All reactions followed first-order kinetics, and the catalysts reduced the activation energies.
MOLECULAR SIMULATION
(2024)
Article
Chemistry, Physical
B. P. Akhouri, R. Perween, J. R. Solana
Summary: Monte Carlo simulations are used to obtain the equation of state and internal energy of fluids with Mie n-m potentials, and its performance is tested against a third order perturbation theory. The theory is then applied to tune the potentials for real fluids and achieve accurate fit with experimental data.
MOLECULAR SIMULATION
(2024)
Article
Chemistry, Physical
Malaisamy Veerapandian, Nagarajan Hemavathy, Alagesan Karthika, Jayaraman Manikandan, Umashankar Vetrivel, Jeyaraman Jeyakanthan
Summary: This study investigates the conformational stability and flexibility of SpeB enzyme and its interactions with substrate. The research finds that neutral pH 7 and alkaline pH 11 are the optimal conditions for stable binding between SpeB and substrate.
MOLECULAR SIMULATION
(2024)
Article
Chemistry, Physical
Yuta Yoshikawa, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Summary: In this study, Tl-doped NaI transparent ceramics with different doping concentrations were synthesized and their optical and scintillation properties were investigated. The 0.1% Tl-doped NaI sample showed the best optical and scintillation performance.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
H. Hashemi Jozani, M. Khorsandi, H. Jafari
Summary: Monitoring radioactive contamination and radiation type is crucial for protection. Phoswich detector is a useful tool to identify and separate different radiations. However, its design needs optimization for maximum efficiency.
RADIATION PHYSICS AND CHEMISTRY
(2024)
