Article
Polymer Science
Yuliia A. Stetsiv, Mykhailo M. Yatsyshyn, Dmytro Nykypanchuk, Sergii A. Korniy, Ivan Saldan, Oleksandr V. Reshetnyak, Tamara J. Bednarchuk
Summary: The study prepared polyaniline thin films through in situ chemical polymerization on a substrate, characterized the pure polyethylene terephthalate and polyaniline thin films, revealing a high degree of oxidation forming a smooth thin film on the surface of polyethylene terephthalate. Delocalized polyaniline macromolecule aggregates in spherical and irregular shapes were also observed on the substrate.
Article
Multidisciplinary Sciences
Shehla Honey, Hasan M. Khan, Muhammad Ehsan Mazhar, Javed Ahmad, Hassan Raza, Ishaq Ahmad, Jamil Asim, Shahzad Naseem, M. Maaza
Summary: This research systematically studied the influence of gamma radiations on silver nanowires. The irradiation caused changes in the crystalline structure of the nanowires, forming silver nanoparticles and improving the optical transmittance.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2022)
Article
Optics
Houda Kaouach
Summary: PEO/PVA blends were studied for the effect of gamma radiation on their structural, morphological and photoluminescence properties. XRD, ATR-FTIR, optical microscopy and PL were used to examine the non-irradiated and irradiated samples with a radiation dose of 10 kGy. Gamma photons induced important chemical rearrangements, especially in PVA hydroxyl groups. The crystallinity rate was found to be strongly influenced by radiation. The blend samples exhibited core-shell nanoparticle behavior due to the luminescence properties, with PVA acting as the shell.
Article
Materials Science, Multidisciplinary
A. M. Alshehari, E. Salim, A. H. Oraby
Summary: In this study, multi-walled carbon nanotubes were added to PEO/SA blend films, leading to improvements in mechanical and optical properties of the films. FTIR and SEM analysis revealed interactions and adhesion between MWCNTs and polymeric samples.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Laxmi Kumari, Utkarsh Kumar, B. C. Yadav, Manisha Gupta
Summary: In this study, polyvinylpyrrolidone-coated iron oxide nanocomposite was successfully synthesized and characterized. The nanocomposite exhibited a small crystallite size and a PVP coating, with no impurities detected. A thin film of the synthesized material was prepared and used as a gas sensor, demonstrating short response and recovery times.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
Taqiyeddine Moumene, Mohamed Kadari, El-habib Belarbi, Noureddine Boudali, Mohamed Said Benyahia, Albert Nguyen Van Nhien, Loic Dupont, Serge Bresson
Summary: In this study, the influence of an ionic liquid (IL) on the structural, optical and morphological properties of ZnO nanoparticles (NPs) is investigated through a comparative study with NPs synthesized by a conventional method. Characterization techniques including X-ray diffraction, infrared spectroscopy, UV-Visible spectrometry and transmission electron microscopy are employed. The results show that the IL reduces the crystallite size as observed by XRD, influences the energy gap of ZnO NPs as evidenced by UV-Vis spectra, and reduces the size of the nanoparticles as observed by TEM. These findings suggest that the IL can be utilized to control the size and properties of ZnO NPs.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Polymer Science
M. F. Zaki, R. M. Radwan, A. M. Rashad
Summary: This study used a blend of polycarbonate (PC) and polybutylene terephthalate thin films as polymeric solid-state nuclear track detectors, analyzing the compositional, optical, electrical, and surface changes in the samples exposed to gamma-rays. Techniques such as Fourier transform infrared spectroscopy, UV-Visible spectroscopy, LCR Meter Bridge, and scanning electron microscope were used to study the physicochemical properties of the irradiated samples. The degradation of the polymer chain, changes in optical behaviors such as absorbance shift, and increase in electrical conductivity were observed after gamma irradiation, with dielectric loss and dielectric constant being sensitive parameters to the changes in structural and optical behaviors. Additionally, surface changes were also discussed.
Article
Materials Science, Multidisciplinary
Adel Madani, Manar Alghamdi, Bedour Alamri, Shoaa Althobaiti
Summary: Barium titanate ceramics synthesized using the solid-state method were investigated for their optical properties and phase transition characteristics. X-ray diffraction and scanning electron microscopy revealed a perovskite structure. The grain size of doped barium titanate ceramics decreased with increasing concentration of Sb2O3 or Y2O3. XRD investigation showed the formation of a cubic crystal structure. The concentration of (Sb, Y) affected the structure, including the appearance of tetragonal phases, grain size reduction, and microstructure development. The absorption coefficient, extinction coefficient, and refractive index were also studied.
Article
Materials Science, Multidisciplinary
T. S. Soliman, M. F. Zaki, M. M. Hessien, Sh. I. Elkalashy
Summary: This study aimed to synthesize BaTiO3 nanocrystalline particles using the tartrate precursor process, and then prepare nanocomposite films with PVA. Analysis using XRD and FTIR showed complex interactions between BaTiO3 nanoparticles and the PVA matrix. As the concentration of BaTiO3 nanoparticles in the PVA matrix increased, the optical band gap decreased while the Urbach energy increased.
Article
Chemistry, Physical
Suman Pawaria, Jyoti Ahlawat, Manju Bala, Sajjan Dahiya, Anil Ohlan, R. Punia, A. S. Maan
Summary: The amalgamation of different compositions of 20ZnO.(80-x)B2O3.xLi2O glasses was studied, and the influence of lithium oxide on the glass structure was investigated. The structural modifications in the glass network with the addition of lithium oxide were analyzed using FTIR and Raman spectroscopy. The optical transmission studies revealed that specific glass compositions have UV rejection and high transparency in the visible region, making them suitable for radiation protection and UV protective coatings.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Materials Science, Multidisciplinary
R. Ranjani, T. Sivanesan, S. Rekha, N. Padmavathi
Summary: An organic crystal L-Arginium 5-Sulfosalicylate (A5SA) was synthesized using a slow evaporation method. The crystal was characterized by X-ray diffraction, UV absorbance, and fluorescence emission spectroscopy. It exhibited orange luminescence and a matched optical bandgap value according to Tauc's Plot.
Article
Chemistry, Physical
Mariana Alves Ribeiro, Iolanda Frota de-Farias, Paulo Tarso Cavalcante Freire, Alejandro Pedro Ayala, Gustavo Antonio Ferreira de-Melo, Daniel Linhares Militao Vasconcelos, Antonio Cesar Honorato Barreto, Francisco Wagner Queiroz Almeida-Neto, Debora Hellen Almeida de-Brito, Paulo Nogueira Bandeira, Helcio Silva-dos-Santos, Telma Leda Gomes de-Lemos, Alexandre Magno Rodrigues Teixeira
Summary: This study investigates the structural, vibrational, electronic, and non-linear optical properties of a novel chalcone crystal. The crystal was characterized using various techniques such as X-ray diffraction, Raman spectroscopy, infrared spectroscopy, and UV-Vis spectroscopy. The results show that the crystal has a monoclinic structure and exhibits good optical and thermal stability.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Physical
L. Anandaraj, L. Jothi
Summary: Cadmium chloride monohydrate doped sulphamic acid crystals were successfully grown by slow evaporation method at room temperature, and their excellent properties were characterized through various analyses such as X-ray diffraction and dielectric response. The results indicate the importance of investigating the effect of doping concentration on sulphamic acid crystal.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Crystallography
Shalendra Kumar, Suliman Yousef AlOmar, Kavita Kumari, Fadwa Albalawi, Rajesh Kumar, Faheem Ahmed, Naushad Ahmad, Sourabh Dwivedi, Parvez Ahmad Alvi
Summary: This study reports the synthesis and characterization of Ce1-xFexO2-delta (0 ≤ x ≤ 20) nanoparticles using a microwave-assisted hydrothermal method, showing that Fe-doping can alter the crystal structure and optical properties of CeO2 nanoparticles, and exhibit certain antibacterial activity against different bacteria under ambient conditions.
Article
Polymer Science
Shujahadeen B. Aziz, Muaffaq M. Nofal, Hewa O. Ghareeb, Elham M. A. Dannoun, Sarkawt A. Hussen, Jihad M. Hadi, Khayal K. Ahmed, Ahang M. Hussein
Summary: The study focused on investigating the influence of dispersing Al-metal complex on the optical properties of PVA using UV-visible spectroscopy. The addition of Al-complex into the polymer matrix led to the recovery of optical parameters and the study of electronic transitions. The study may have potential applications in optical instrument manufacturing.
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
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
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
Vyacheslav Ivanovich Pavlenko, Roman Vladimirovich Sidelnikov, Vitaly Valerievich Kashibadze, Mikhail Igorevich Dobynde, Dmitry Alexandrovich Kartashov, Vyacheslav Alexandrovich Shurshakov
Summary: This work explores the possibility of using a polymer composite to protect against neutron radiation in space conditions. The study shows that the proposed polymer composite has high structural properties necessary for use in space. Monte Carlo simulation is used to evaluate the neutron radiation passage through the material. The results demonstrate that the protective layer made of the polymer composite is thinner and more suitable for spacecraft, which is crucial due to limited space on board.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Islam G. Alhindawy, M. I. Sayyed, Dalal Abdullah Aloraini, Aljawhara H. Almuqrin, Mohammad S. Alomar, Gaber A. Elawadi, K. A. Mahmoud
Summary: This study investigated the effects of Neodymium (III) nitrate hexahydrate and lanthanum nitrate hexahydrate on the structural and radiation shielding properties of zircon mineral, and a new La/Nb-doped ZrO2 nanocomposite was fabricated. Experimental techniques such as energy-dispersive X-ray, scanning electron microscope, transmission electron microscopy, and X-ray diffraction pattern were used to analyze the structure and composition of the fabricated nanocomposites. Monte Carlo simulation was employed to evaluate the gamma-ray shielding properties. The results showed that the fabricated composites had good shielding characteristics, with a shielding capacity of 30-50% compared to pure lead in the intermediate energy range of 0.244-2.506 MeV.
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
Mawya Khafaji, Rashid Barnawi, Salma Amoudi, Hassan Gabbani, Rayan Alhazmi, Rayan Ahyad, Khalid Alsafi, Khuld Saeedi, Hassan Salah, Nissren Tamam, David Bradley, Sarah Albahiti, Abdelmoneim Sulieman
Summary: This study aimed to calculate typical values for common pediatric studies at King Abdulaziz University Hospital and compare them with other studies. The results showed that radiation dose levels in pediatric CT examinations were generally lower compared to other studies.
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
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
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
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
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
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
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)
