Application of high-sensitivity radon monitor on walk-in type radon calibration chamber at KRISS
Appl Radiat Isot. 2024 Mar 11;208:111285. doi: 10.1016/j.apradiso.2024.111285. Online ahead of print.ABSTRACTThis paper introduces the KRISS-Rn4, a high-sensitivity radon monitor with four detection cells, installed within a walk-in type radon calibration chamber at KRISS. The KRISS-Rn4 exhibits enhanced energy resolution through channel-by-channel signal processing and data acquisition. Results reveal that it achieves lower statistical fluctuations and faster response times in monitoring test atmospheres compared to commercial devices.PMID:38484589 | DOI:10.1016/j.apradiso.2024.111285 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - March 14, 2024 Category: Radiology Authors: Hyun Su Lee Sanghoon Hwang Minji Han Byoung-Chul Kim Jong-Man Lee Kyoung Beom Lee Source Type: research
Trends of occupational exposure to ionizing radiation in Central China for the period 2000-2021
Appl Radiat Isot. 2024 Mar 11;208:111283. doi: 10.1016/j.apradiso.2024.111283. Online ahead of print.ABSTRACTA retrospective analysis of occupational exposure to ionizing radiation from medical uses and industrial uses in the three provinces of Central China from 2000 to 2021 was conducted. The average annual effective dose in medical uses and industrial uses decreased from 2.042 mSv and 2.334 mSv in 2000-2002 to 0.476 mSv and 0.371 mSv in 2021 respectively; the fraction of monitored workers receiving annual dose not exceeding 1 mSv increased from 60.78% and 74.45% in 2000-2002 to 94.20% and 96.85% in 2021 respectively, wh...
Source: Applied Radiation and Isotopes - March 14, 2024 Category: Radiology Authors: Mengxue Li Lei Deng Wenshan Zhou Yanfang Zhao Tuo Wang Shuxia Hao Shengnan Fan Jun Deng Quanfu Sun Source Type: research
Methodology for measuring photonuclear reaction cross sections with an electron accelerator based on Bayesian analysis
Appl Radiat Isot. 2024 Mar 2;208:111275. doi: 10.1016/j.apradiso.2024.111275. Online ahead of print.ABSTRACTAccurate measurements of photonuclear reaction cross sections are crucial for a number of applications, including radiation shielding design, absorbed dose calculations, reactor physics and engineering, nuclear safeguard and inspection, astrophysics, and nuclear medicine. Primarily motivated by the study of the production of selected radionuclides with high-energy photon beams (mainly 225Ac, 47Sc, and 67Cu), we have established a methodology for the measurement of photonuclear reaction cross sections with the microtr...
Source: Applied Radiation and Isotopes - March 14, 2024 Category: Radiology Authors: Saverio Braccini Pierluigi Casolaro Gaia Dellepiane Christian Kottler Matthias L üthi Lorenzo Mercolli Peter Peier Paola Scampoli Andreas T ürler Source Type: research
Modeling of liquid-liquid hollow fiber supported membrane equilibrium including the non-ideality of the aqueous and organic phases in the recovery systems of radionuclides in sulphate-halide/aliquat-336 in O-xylene
Appl Radiat Isot. 2024 Feb 27;207:111263. doi: 10.1016/j.apradiso.2024.111263. Online ahead of print.ABSTRACTStudy of modeling of L/LHFSLM equilibrium based on the Non-ideality of the Aqueous and Organic Phases in the Recovery of 152+154Eu in H2SO4-Halides/Aliquat-336 in 20% kerosene as feeding phase at pH 3.78-4.55, by the ratio 89.7%,while separation of 90Sr and 134Cs there was a problem between them by using hollow HFSLM only, the reason for that the organic solvents affect the rate of reaction in the Diamino-1,2-cyclohexane/tetraacetic acid (DCTA) as stripping phase concentration from 0.15 to 0.55 mol/L. The system has...
Source: Applied Radiation and Isotopes - March 12, 2024 Category: Radiology Authors: A T Kassem Mahmoud M S Ali Source Type: research
Modeling of liquid-liquid hollow fiber supported membrane equilibrium including the non-ideality of the aqueous and organic phases in the recovery systems of radionuclides in sulphate-halide/aliquat-336 in O-xylene
Appl Radiat Isot. 2024 Feb 27;207:111263. doi: 10.1016/j.apradiso.2024.111263. Online ahead of print.ABSTRACTStudy of modeling of L/LHFSLM equilibrium based on the Non-ideality of the Aqueous and Organic Phases in the Recovery of 152+154Eu in H2SO4-Halides/Aliquat-336 in 20% kerosene as feeding phase at pH 3.78-4.55, by the ratio 89.7%,while separation of 90Sr and 134Cs there was a problem between them by using hollow HFSLM only, the reason for that the organic solvents affect the rate of reaction in the Diamino-1,2-cyclohexane/tetraacetic acid (DCTA) as stripping phase concentration from 0.15 to 0.55 mol/L. The system has...
Source: Applied Radiation and Isotopes - March 12, 2024 Category: Radiology Authors: A T Kassem Mahmoud M S Ali Source Type: research
Automated radiosynthesis of [ < sup > 18 < /sup > F]DPA-714 on a commercially available IBA Synthera ®
Appl Radiat Isot. 2024 Mar 5;207:111257. doi: 10.1016/j.apradiso.2024.111257. Online ahead of print.ABSTRACTThe goal of this work was to develop a reliable method to produce the well-validated microglial activation PET tracer, [18F]DPA-714, routinely for clinical and preclinical research using an IBA Synthera®. Optimization of literature methods included reduced precursor mass and use of TBA HCO3 as the phase transfer agent in place of Kryptofix® 222 in a 65-min synthesis with an average activity yield of 24.6 ± 3.8% (n = 5). Successful quality control testing and process validation results are reported.PMID:38461627 | ...
Source: Applied Radiation and Isotopes - March 10, 2024 Category: Radiology Authors: Amy L V āvere Arijit Ghosh Victor Amador Diaz Allison J Clay Peter M Hall Kiel D Neumann Source Type: research
Induction of genetic variability of maize genotypes through radiation revealed mutants resistant to maize streak disease
In this study, four maize genotypes, Obatampa, Dapango, Pann 54 and Honampa which were susceptible to maize streak disease (MSD) were acutely irradiated at 254.3 Gy, using a cobalt 60 (60Co) at a rate of 300 Gy/hr. The irradiated seeds were planted with their parental controls at streak disease highly endemic environment. Field trials for the selected maize genotypes were conducted from the M1 to M4 generations to screen for MSD resistance and improved grain yield. Sixteen putative mutants and four individual parental controls were selected across the four maize genotypes at the end of the M4 generation based on disease se...
Source: Applied Radiation and Isotopes - March 10, 2024 Category: Radiology Authors: Yayra Afram Godwin Amenorpe Elvis Asare Bediako Alfred A Darkwa Siphiwokuhle Funani Shandu Maryke T Labuschagne Isaac Kodzo Amegbor Source Type: research
Assessment of radiological hazards from radioactivity natural of cement used in Dwellings in Rio de Janeiro, Brazil
Appl Radiat Isot. 2024 Mar 3;207:111266. doi: 10.1016/j.apradiso.2024.111266. Online ahead of print.ABSTRACTBrazil is the fourth largest cement consumer in the world and the largest producer in Latin America, around 1.3% of global production. The main inputs in the manufacture of cement are limestone and clay. Few studies have been carried out in the country on the risk of these materials used in civil construction. Therefore, the objective of this present work is to evaluate the radiological danger that they can present to society. Gamma spectrometry analysis on 16 samples of different brands of cement used as constructio...
Source: Applied Radiation and Isotopes - March 10, 2024 Category: Radiology Authors: Leandro Barbosa da Silva Lucas Faria da Silva Vanderlei Bruno Junior Carlos Omar Pastrana Orejuela Paulo Roberto Rocha Ferreira Ademir Xavier da Silva Source Type: research
Automated radiosynthesis of [ < sup > 18 < /sup > F]DPA-714 on a commercially available IBA Synthera ®
Appl Radiat Isot. 2024 Mar 5;207:111257. doi: 10.1016/j.apradiso.2024.111257. Online ahead of print.ABSTRACTThe goal of this work was to develop a reliable method to produce the well-validated microglial activation PET tracer, [18F]DPA-714, routinely for clinical and preclinical research using an IBA Synthera®. Optimization of literature methods included reduced precursor mass and use of TBA HCO3 as the phase transfer agent in place of Kryptofix® 222 in a 65-min synthesis with an average activity yield of 24.6 ± 3.8% (n = 5). Successful quality control testing and process validation results are reported.PMID:38461627 | ...
Source: Applied Radiation and Isotopes - March 10, 2024 Category: Radiology Authors: Amy L V āvere Arijit Ghosh Victor Amador Diaz Allison J Clay Peter M Hall Kiel D Neumann Source Type: research
Induction of genetic variability of maize genotypes through radiation revealed mutants resistant to maize streak disease
In this study, four maize genotypes, Obatampa, Dapango, Pann 54 and Honampa which were susceptible to maize streak disease (MSD) were acutely irradiated at 254.3 Gy, using a cobalt 60 (60Co) at a rate of 300 Gy/hr. The irradiated seeds were planted with their parental controls at streak disease highly endemic environment. Field trials for the selected maize genotypes were conducted from the M1 to M4 generations to screen for MSD resistance and improved grain yield. Sixteen putative mutants and four individual parental controls were selected across the four maize genotypes at the end of the M4 generation based on disease se...
Source: Applied Radiation and Isotopes - March 10, 2024 Category: Radiology Authors: Yayra Afram Godwin Amenorpe Elvis Asare Bediako Alfred A Darkwa Siphiwokuhle Funani Shandu Maryke T Labuschagne Isaac Kodzo Amegbor Source Type: research
Assessment of radiological hazards from radioactivity natural of cement used in Dwellings in Rio de Janeiro, Brazil
Appl Radiat Isot. 2024 Mar 3;207:111266. doi: 10.1016/j.apradiso.2024.111266. Online ahead of print.ABSTRACTBrazil is the fourth largest cement consumer in the world and the largest producer in Latin America, around 1.3% of global production. The main inputs in the manufacture of cement are limestone and clay. Few studies have been carried out in the country on the risk of these materials used in civil construction. Therefore, the objective of this present work is to evaluate the radiological danger that they can present to society. Gamma spectrometry analysis on 16 samples of different brands of cement used as constructio...
Source: Applied Radiation and Isotopes - March 10, 2024 Category: Radiology Authors: Leandro Barbosa da Silva Lucas Faria da Silva Vanderlei Bruno Junior Carlos Omar Pastrana Orejuela Paulo Roberto Rocha Ferreira Ademir Xavier da Silva Source Type: research
Automated radiosynthesis of [ < sup > 18 < /sup > F]DPA-714 on a commercially available IBA Synthera ®
Appl Radiat Isot. 2024 Mar 5;207:111257. doi: 10.1016/j.apradiso.2024.111257. Online ahead of print.ABSTRACTThe goal of this work was to develop a reliable method to produce the well-validated microglial activation PET tracer, [18F]DPA-714, routinely for clinical and preclinical research using an IBA Synthera®. Optimization of literature methods included reduced precursor mass and use of TBA HCO3 as the phase transfer agent in place of Kryptofix® 222 in a 65-min synthesis with an average activity yield of 24.6 ± 3.8% (n = 5). Successful quality control testing and process validation results are reported.PMID:38461627 | ...
Source: Applied Radiation and Isotopes - March 10, 2024 Category: Radiology Authors: Amy L V āvere Arijit Ghosh Victor Amador Diaz Allison J Clay Peter M Hall Kiel D Neumann Source Type: research
Induction of genetic variability of maize genotypes through radiation revealed mutants resistant to maize streak disease
In this study, four maize genotypes, Obatampa, Dapango, Pann 54 and Honampa which were susceptible to maize streak disease (MSD) were acutely irradiated at 254.3 Gy, using a cobalt 60 (60Co) at a rate of 300 Gy/hr. The irradiated seeds were planted with their parental controls at streak disease highly endemic environment. Field trials for the selected maize genotypes were conducted from the M1 to M4 generations to screen for MSD resistance and improved grain yield. Sixteen putative mutants and four individual parental controls were selected across the four maize genotypes at the end of the M4 generation based on disease se...
Source: Applied Radiation and Isotopes - March 10, 2024 Category: Radiology Authors: Yayra Afram Godwin Amenorpe Elvis Asare Bediako Alfred A Darkwa Siphiwokuhle Funani Shandu Maryke T Labuschagne Isaac Kodzo Amegbor Source Type: research
Assessment of radiological hazards from radioactivity natural of cement used in Dwellings in Rio de Janeiro, Brazil
Appl Radiat Isot. 2024 Mar 3;207:111266. doi: 10.1016/j.apradiso.2024.111266. Online ahead of print.ABSTRACTBrazil is the fourth largest cement consumer in the world and the largest producer in Latin America, around 1.3% of global production. The main inputs in the manufacture of cement are limestone and clay. Few studies have been carried out in the country on the risk of these materials used in civil construction. Therefore, the objective of this present work is to evaluate the radiological danger that they can present to society. Gamma spectrometry analysis on 16 samples of different brands of cement used as constructio...
Source: Applied Radiation and Isotopes - March 10, 2024 Category: Radiology Authors: Leandro Barbosa da Silva Lucas Faria da Silva Vanderlei Bruno Junior Carlos Omar Pastrana Orejuela Paulo Roberto Rocha Ferreira Ademir Xavier da Silva Source Type: research
A method of determining the bremsstrahlung flux-weighted average photonuclear cross section
Appl Radiat Isot. 2024 Mar 1;207:111258. doi: 10.1016/j.apradiso.2024.111258. Online ahead of print.ABSTRACTBased on a developed analytical model, a method is proposed for measuring the photonuclear cross section averaged over bremsstrahlung flux without application of additional target-monitor of photon flux. The method involves the use of a thin isotopic target, that completely overlaps the photon beam (a photonuclear converter), as well as an algorithm for processing the data on the yield of a reaction under study in such a target. The novel technique was validated on the reactions 100Mo(γ,n)99Mo and 58Ni(γ,n)57Ni in ...
Source: Applied Radiation and Isotopes - March 9, 2024 Category: Radiology Authors: V L Uvarov A A Zakharchenko N P Dikiy Yu V Lyashko R I Pomatsalyuk Source Type: research
