Article
Chemistry, Multidisciplinary
Nina Girard-Perier, Sylvain R. A. Marque, Nathalie Dupuy, Magalie Claeys-Bruno, Fanny Gaston, Samuel Dorey, Leonard S. Fifield, Yelin Ni, Donghui Li, Witold K. Fuchs, Mark K. Murphy, Suresh D. Pillai, Matt Pharr, Larry Nichols
Summary: This study investigates the compatibility of ethylene vinyl acetate (EVA) multilayer films with different ionizing radiation sterilization methods. Results show that there are no significant differences in thermal properties when using X-ray, gamma-ray, or e-beam sterilization in the investigated dose range.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Physical
Krystyna Ciesla, Marcela Grabowska
Summary: This study investigated the influence of treatment with HEMA supported by gamma irradiation on the physicochemical properties of starch:PVA films. The results showed effective grafting of HEMA onto the polymer matrix and the differences in thermal degradation and structural changes between the treated and untreated samples.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Physical
Sushmita Dwivedi, Manish Badole, Tanvi Pareek, Sunil Kumar
Summary: This study aims to experimentally verify proposed models for the behavior of polymer-ceramic composites and design a new composite material with excellent piezoelectric performance. By adding ceramic fillers, the thermodynamic stability of the composite was improved, leading to enhanced dielectric and piezoelectric properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Krystyna Ciesla, Hubert Rahier
Summary: The effect of irradiation on further transformations of potato starch in the starch-CTAB-water system was studied using DSC, revealing structural changes and decreased symmetry in complexes formed using irradiated starch compared to non-irradiated starch. Thermal treatment induced deterioration of the complex structure in irradiated samples, while non-irradiated starch showed no significant modifications. Changes in complex structure were detected in granular starch samples when doses in the range of 2-30 kGy were applied, with 5 kGy causing easily noticeable modifications.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Engineering, Environmental
Hajo Bitter, Susanne Lackner
Summary: Differential scanning calorimetry (DSC) can be used to quantify microplastics, with improved detection accuracy and limits achieved through defined pre-heating and cooling steps. The method is shown to be feasible for environmental samples, with quantification limits and accuracy demonstrated for various polymers such as PE, PET, PP, and PA6.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Eman O. Taha, Haifa A. Alyousef, A. M. Dorgham, O. M. Hemeda, Hesham M. H. Zakaly, P. Noga, M. M. Abdelhamied, M. M. Atta
Summary: In this research, the PVDF-PZT composite was successfully manufactured using a solution-casting approach. The effects of electron beam dosage and CNT loading on the structural, dielectric, and dynamic-mechanical characteristics of PVDF-PZT were investigated. The results showed that incorporating CNT into PVDF-PZT increased the storage modulus, while electron beam irradiation decreased the storage modulus and crosslinking density. Additionally, both CNT content and electron beam dosage enhanced the dielectric parameters of PVDF-PZT.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Biotechnology & Applied Microbiology
Jamlet Monaselidze, Eteri Gelagutashvili, Mikheil Gogebashvili, Maya Gorgoshidze, Alexander Gongadze, Nanuli Bagdavadze, Eugeni Kiziria
Summary: Using optical and DSC studies, this study demonstrated for the first time that Spirulina platensis irradiated with Cs137 gamma 400 kGy remained viable despite significant denaturation. The recultivated Spirulina platensis showed enhanced biomass, cell growth, chlorophyll and phycobilisome complexes compared to normal values. The DSC data indicated a cooperative melting behavior of PBSc in the recultivated samples, close to the freshly cultivated Spirulina platensis. The redistribution of biomass observed was attributed to the blocking of light-harvesting proteins and initiation of dark protein synthesis.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Chemistry, Applied
M. Sobanwa, T. J. Foster, Gleb Yakubov, N. J. Watson
Summary: The study investigated the effects of different hydrocolloids on the rheological and thermal properties of collagen pastes. It was found that the addition of methylcellulose, hydroxypropylmethylcellulose, high and medium molecular weight guar gum increased the storage modulus of collagen pastes, while the addition of sodium carboxymethylcellulose increased the loss modulus. The hydrocolloid additives also decreased the elastic properties of the pastes.
FOOD HYDROCOLLOIDS
(2022)
Article
Polymer Science
Yan Liu, Jing Hu, Xuanchen Zhao, Junhao Xie, Shixin Song, Shulin Sun
Summary: Poly(vinylidene fluoride) (PVDF) based nano dielectric composites have been widely investigated for their potential applications in sensors, actuators, and energy storage fields. A novel modification of PVDF films was prepared using exfoliated and oriented Na+-MMT with the assistance of different cationic chain length imidazole-based ionic liquids. The ion exchange between Na+-MMT and ILs promoted exfoliation and uniform dispersion of Na+-MMT in PVDF matrix efficiently. The synergistic effect of Na+-MMT and ILs induced crystal conformation transition and improved the dielectric properties of PVDF/Na+-MMT/ILs nanocomposites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Applied
Jae Hoon Lee, Yea-Ji Kim, Yoo-Jeong Choi, Tae-Kyung Kim, Ji Yoon Cha, Min Kyung Park, Samooel Jung, Yun-Sang Choi
Summary: Research shows that the processing properties of edible insect proteins can be improved through irradiation, leading to changes in their structures, including pH, protein solubility, surface hydrophobicity, foaming capacity, and emulsion stability.
Article
Chemistry, Multidisciplinary
Kevin M. Roccapriore, Shin-Hum Cho, Andrew R. Lupini, Delia J. Milliron, Sergei Kalinin
Summary: The spatial confinement of matter in functional nanostructures has positioned them at the forefront of nanoscience, serving as playgrounds for exotic physics and quantum phenomena as well as finding applications in various fields. Through modern synthesis processes and precise sculpting, the plasmonic response of nanoparticles can be effectively modified, offering a wide range of possibilities for nanophotonic design.
Article
Environmental Sciences
Lucas Kurzweg, Sven Schirrmeister, Maurice Hauffe, Yasmin Adomat, Martin Socher, Kathrin Harre
Summary: This study presents a potential method for comprehensive microplastic monitoring in river sediments, combining electrostatic separation, density separation, and differential scanning calorimetry. The method allows for efficient processing of large sample masses and robust results, overcoming current limitations in microplastic analysis. It can be applied for monitoring microplastics in highly polluted sediments.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Oncology
Gabriela Schneider, Alagammai Kaliappan, Taylor Q. Nguyen, Robert Buscaglia, Guy N. Brock, Melissa Barousse Hall, Crissie DeSpirito, Daniel W. Wilkey, Michael L. Merchant, Jon B. Klein, Tanya A. Wiese, Hiram L. Rivas-Perez, Goetz H. Kloecker, Nichola C. Garbett
Summary: Lung cancer is the most common malignancy worldwide and improving screening strategies is crucial due to limitations of current methods. Differential scanning calorimetry (DSC) shows promise in diagnosing lung cancer patients and correlating with survival rates, suggesting it as a potentially accurate, non-invasive, radiation-free screening tool.
Article
Polymer Science
Janetty Jany Pereira Barros, Carlos Pereira Soares, Esperidiana Augusta Barretos de Moura, Renate Maria Ramos Wellen
Summary: This study investigates the effect of gamma radiation on the interaction between kraft lignin and PBAT/PLA blend. The results show that irradiation promotes the miscibility and compatibility of PBAT/PLA/lignin. The crystallization peak of PBAT/PLA/lignin shifts to lower temperatures and the crystallization rate decreases after irradiation.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Gangpeng Shi, Mingzhu Zhou, Lan Wang, Zihao Xiao, Liu Shi, Chunhai Jiao, Wenjin Wu, Xin Li, Jun Wang, Yu Qiao, Li Liao, Anzi Ding, Guangquan Xiong
Summary: The research findings showed that exposure to different doses of radiation resulted in changes in the physicochemical properties of myofibrillar protein and myosin from grass carp, with electron beam irradiation having a greater impact compared to gamma-ray irradiation.
JOURNAL OF FOOD BIOCHEMISTRY
(2021)
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)
