Application of deep neural network and gamma-ray scattering in eccentric scale calculation regardless of the fluids volume fraction inside a pipeline
Appl Radiat Isot. 2022 Jun 30;188:110353. doi: 10.1016/j.apradiso.2022.110353. Online ahead of print.ABSTRACTScale formation is one of the major problems in the oil industry as it can accumulate on the surface of the pipelines, which could even fully block the fluids' passage. It was developed a methodology to detect and quantify the maximum thickness of eccentric scale inside pipelines using nuclear techniques and an artificial neural network. The measurement procedure is based on gamma-ray scattering using NaI(Tl) detectors and a137Cs radiation source that emits gamma-rays of 662 keV. The simulations considered an annula...
Source: Applied Radiation and Isotopes - July 6, 2022 Category: Radiology Authors: Roos Sophia de Freitas Dam William Luna Salgado Roberto Schirru C ésar Marques Salgado Source Type: research

A novel β-cyclodextrin/alginate-combined-nickel oxide nanosorbent for adsorptive remediation of < sup > 51 < /sup > Cr and < sup > 56 < /sup > Mn radionuclides
Appl Radiat Isot. 2022 Jun 24;188:110324. doi: 10.1016/j.apradiso.2022.110324. Online ahead of print.ABSTRACTA Promising nanocomposite from β-Cyclodextrin/Alginate (β-CD/Alg) composite impregnated with nickel oxide nanoparticles (NiO) has been synthesized and characterized using diverse techniques like FT-IR, XRD, TGA, and SEM. The new nanocomposite has been investigated for the efficient remediation of 51Cr and 56Mn radionuclides from simulated contaminated radioactive water. All the controlling experimental parameters such as solution pH, contact time, initial radionuclides concentration and adsorbent mass have been in...
Source: Applied Radiation and Isotopes - July 6, 2022 Category: Radiology Authors: M R El-Aassar M A Gizawy Elhassan A Allam Ahmed S M Ali Rehab M Elsharkawy Mohamed E Mahmoud Source Type: research

A solvent extraction-based procedure for removal of < sup > 46 < /sup > Sc impurity from reactor produced [ < sup > 45 < /sup > Ca]CaCl < sub > 2 < /sub > for its potential use in bone pain palliation
In this study, we have optimized a single-step solvent extraction procedure for complete removal of 46Sc impurity from [45Ca]CaCl2. The purified radiotracer was administered intravenously in normal Wistar rats and preferential bone uptake could be demonstrated by ex vivo biodistribution studies.PMID:35792353 | DOI:10.1016/j.apradiso.2022.110352 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - July 6, 2022 Category: Radiology Authors: Rubel Chakravarty Ramu Ram Sourav Patra Haladhar Dev Sarma Sudipta Chakraborty Source Type: research

A theoretical study for the production of < sup > 32 < /sup > P radioisotope using neutrons from the < sup > 68 < /sup > Zn(p,n) < sup > 68 < /sup > Ga reaction in a medical cyclotron
Appl Radiat Isot. 2022 Jun 30;188:110347. doi: 10.1016/j.apradiso.2022.110347. Online ahead of print.ABSTRACTIn the present study, the theoretical estimation of a combined production of 68Ga and 32P radioisotopes were investigated using a medical cyclotron. Protons are used in the 68Zn(p,n) reaction to produce the medical isotope 68Ga. The neutrons from the 68Zn(p,n)68Ga reaction are used to launch the 32S(n,p) reaction to produce 32P radioisotope. The cross section of these reactions were calculated using TALYS 1.9 code and compared with the available experimental results. SRIM-2013 code was used to calculate the stopping...
Source: Applied Radiation and Isotopes - July 6, 2022 Category: Radiology Authors: Mansoureh Tatari Zahra Dehghan Manshadi Haladhara Naik Source Type: research

Application of deep neural network and gamma-ray scattering in eccentric scale calculation regardless of the fluids volume fraction inside a pipeline
Appl Radiat Isot. 2022 Jun 30;188:110353. doi: 10.1016/j.apradiso.2022.110353. Online ahead of print.ABSTRACTScale formation is one of the major problems in the oil industry as it can accumulate on the surface of the pipelines, which could even fully block the fluids' passage. It was developed a methodology to detect and quantify the maximum thickness of eccentric scale inside pipelines using nuclear techniques and an artificial neural network. The measurement procedure is based on gamma-ray scattering using NaI(Tl) detectors and a137Cs radiation source that emits gamma-rays of 662 keV. The simulations considered an annula...
Source: Applied Radiation and Isotopes - July 6, 2022 Category: Radiology Authors: Roos Sophia de Freitas Dam William Luna Salgado Roberto Schirru C ésar Marques Salgado Source Type: research

A novel β-cyclodextrin/alginate-combined-nickel oxide nanosorbent for adsorptive remediation of < sup > 51 < /sup > Cr and < sup > 56 < /sup > Mn radionuclides
Appl Radiat Isot. 2022 Jun 24;188:110324. doi: 10.1016/j.apradiso.2022.110324. Online ahead of print.ABSTRACTA Promising nanocomposite from β-Cyclodextrin/Alginate (β-CD/Alg) composite impregnated with nickel oxide nanoparticles (NiO) has been synthesized and characterized using diverse techniques like FT-IR, XRD, TGA, and SEM. The new nanocomposite has been investigated for the efficient remediation of 51Cr and 56Mn radionuclides from simulated contaminated radioactive water. All the controlling experimental parameters such as solution pH, contact time, initial radionuclides concentration and adsorbent mass have been in...
Source: Applied Radiation and Isotopes - July 6, 2022 Category: Radiology Authors: M R El-Aassar M A Gizawy Elhassan A Allam Ahmed S M Ali Rehab M Elsharkawy Mohamed E Mahmoud Source Type: research

Effective dose for kidney-ureter-bladder plain radiography, intravenous urography, and abdominal computed tomography scan: A phantom study
In this study, a high-sensitivity thermoluminescent dosimeter (TLD) was embedded in a Rando phantom to directly measure organ dose and evaluate effective dose. During each experiment, 139 TLD measurement points that cover almost all organs (as recommended by the ICRP 103 report) were examined. Red bone-marrow and remainder tissues have a high tissue weighting factor (0.12), and they are widely distributed. In the phantom, 34 TLDs and 31 TLDs were embedded in the red bone-marrow and remainder tissues to improve the accuracy and representativeness of organ doses. The detailed organ dose distributions for KUB, IVU, and abdomi...
Source: Applied Radiation and Isotopes - July 5, 2022 Category: Radiology Authors: Tzuo-Yi Hsieh Sung-Lang Chen Yi-Ru Chang Yeu-Sheng Tyan Tou-Rong Chen Source Type: research

Effective dose for kidney-ureter-bladder plain radiography, intravenous urography, and abdominal computed tomography scan: A phantom study
In this study, a high-sensitivity thermoluminescent dosimeter (TLD) was embedded in a Rando phantom to directly measure organ dose and evaluate effective dose. During each experiment, 139 TLD measurement points that cover almost all organs (as recommended by the ICRP 103 report) were examined. Red bone-marrow and remainder tissues have a high tissue weighting factor (0.12), and they are widely distributed. In the phantom, 34 TLDs and 31 TLDs were embedded in the red bone-marrow and remainder tissues to improve the accuracy and representativeness of organ doses. The detailed organ dose distributions for KUB, IVU, and abdomi...
Source: Applied Radiation and Isotopes - July 5, 2022 Category: Radiology Authors: Tzuo-Yi Hsieh Sung-Lang Chen Yi-Ru Chang Yeu-Sheng Tyan Tou-Rong Chen Source Type: research

Radioprotective effects of N-acetylcysteine on rats' brainstem following megavoltage X-irradiations
CONCLUSION: Based on the results, NAC can decrease the irradiation-induced oxidative stress and pathology damages in the rats' brainstem. It can be concluded that NAC can be an appropriate radioprotection candidate for the human brainstem.PMID:35779304 | DOI:10.1016/j.apradiso.2022.110348 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - July 2, 2022 Category: Radiology Authors: Elham Motallebzadeh Marwah Suliman Maashi Mustafa Z Mahmoud Akbar Aliasgharzedeh Zarichehr Vakili Sayyed Alireza Talaei Mehran Mohseni Source Type: research

Characteristics, as a shield against ionizing photons, of concrete blocks used in the construction industry
Appl Radiat Isot. 2022 Jun 26;187:110343. doi: 10.1016/j.apradiso.2022.110343. Online ahead of print.ABSTRACTINEGI reports that 81% of new constructions are built with durable materials, such as concrete blocks, including rooms where ionizing radiation is used, such as clinics and hospitals. The volume ratios used in the manufacture of concrete blocks have a 1: 5: 2 ratio of: portland cement, sand and crushed gravel. The percentage mass content of each atom in the sample is obtained with the energy-dispersed X-ray fluorescence, these results are used to calculate the characteristics such as shielding of the concrete blocks...
Source: Applied Radiation and Isotopes - July 2, 2022 Category: Radiology Authors: Christian Geovanni Hernandez-Murillo Luis Alberto Escalera-Velasco Hector Asael de Leon-Mart ínez Hector Rene Vega-Carrillo J Rafael Molina Contreras Dania Estefania Moreira Del Rio Daniel Jauregui Acevedo Source Type: research

Cross section empirical formulation for (n, 2n) nuclear reactions on natural isotopes from Z= 21 to Z= 79 for neutron energy range, 8-20  MeV
Appl Radiat Isot. 2022 Jun 26;187:110341. doi: 10.1016/j.apradiso.2022.110341. Online ahead of print.ABSTRACTNeutron induced reactions with different target materials and isotopes are very important for completion of nuclear data base as well as for many applications. Since the experimental determinations of the reaction cross sections for such reactions are not always available, attempts were made to introduce empirical or semi empirical formulae. In this work, new empirical formulation for (n, 2n) nuclear reactions on natural isotopes for neutron energies range 8-20 MeV, based on some published experimental works. The de...
Source: Applied Radiation and Isotopes - July 2, 2022 Category: Radiology Authors: Gehan Y Mohamed M Al-Abyad A Azzam Source Type: research

Production cross sections of samarium-153 and -145 via alpha-particle-induced reactions on natural neodymium
Appl Radiat Isot. 2022 Jun 25;187:110345. doi: 10.1016/j.apradiso.2022.110345. Online ahead of print.ABSTRACTProduction cross sections of 153,145Sm via alpha-particle-induced reactions on natNd were measured up to 23 MeV. The stacked-foil activation technique and high-resolution gamma-ray spectrometry were adopted for the measurement. The obtained cross sections were compared with the literature data and the TENDL-2019 and TENDL-2021 values. Physical thick target yields of the two radionuclides were derived from the measured cross sections.PMID:35779307 | DOI:10.1016/j.apradiso.2022.110345 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - July 2, 2022 Category: Radiology Authors: Masayuki Aikawa Michiya Sakaguchi Naoyuki Ukon Yukiko Komori Hiromitsu Haba Naohiko Otuka S ándor Takács Source Type: research

Radioprotective effects of N-acetylcysteine on rats' brainstem following megavoltage X-irradiations
CONCLUSION: Based on the results, NAC can decrease the irradiation-induced oxidative stress and pathology damages in the rats' brainstem. It can be concluded that NAC can be an appropriate radioprotection candidate for the human brainstem.PMID:35779304 | DOI:10.1016/j.apradiso.2022.110348 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - July 2, 2022 Category: Radiology Authors: Elham Motallebzadeh Marwah Suliman Maashi Mustafa Z Mahmoud Akbar Aliasgharzedeh Zarichehr Vakili Sayyed Alireza Talaei Mehran Mohseni Source Type: research

Characteristics, as a shield against ionizing photons, of concrete blocks used in the construction industry
Appl Radiat Isot. 2022 Jun 26;187:110343. doi: 10.1016/j.apradiso.2022.110343. Online ahead of print.ABSTRACTINEGI reports that 81% of new constructions are built with durable materials, such as concrete blocks, including rooms where ionizing radiation is used, such as clinics and hospitals. The volume ratios used in the manufacture of concrete blocks have a 1: 5: 2 ratio of: portland cement, sand and crushed gravel. The percentage mass content of each atom in the sample is obtained with the energy-dispersed X-ray fluorescence, these results are used to calculate the characteristics such as shielding of the concrete blocks...
Source: Applied Radiation and Isotopes - July 2, 2022 Category: Radiology Authors: Christian Geovanni Hernandez-Murillo Luis Alberto Escalera-Velasco Hector Asael de Leon-Mart ínez Hector Rene Vega-Carrillo J Rafael Molina Contreras Dania Estefania Moreira Del Rio Daniel Jauregui Acevedo Source Type: research

Cross section empirical formulation for (n, 2n) nuclear reactions on natural isotopes from Z= 21 to Z= 79 for neutron energy range, 8-20  MeV
Appl Radiat Isot. 2022 Jun 26;187:110341. doi: 10.1016/j.apradiso.2022.110341. Online ahead of print.ABSTRACTNeutron induced reactions with different target materials and isotopes are very important for completion of nuclear data base as well as for many applications. Since the experimental determinations of the reaction cross sections for such reactions are not always available, attempts were made to introduce empirical or semi empirical formulae. In this work, new empirical formulation for (n, 2n) nuclear reactions on natural isotopes for neutron energies range 8-20 MeV, based on some published experimental works. The de...
Source: Applied Radiation and Isotopes - July 2, 2022 Category: Radiology Authors: Gehan Y Mohamed M Al-Abyad A Azzam Source Type: research