Analysis of isotopes of plutonium in water samples with a PSresin based on aliquat ·336
Appl Radiat Isot. 2022 Jun 17;187:110333. doi: 10.1016/j.apradiso.2022.110333. Online ahead of print.ABSTRACTThere is a necessity to have techniques capable to perform rapid determinations of specific radionuclides with the aim to provide fast response in emergency situations where a large number of samples need to be measured in a short time. Plastic Scintillation Resins (PSresins) raises as an adequate tool to achieve this purpose and in the present study a methodology to determine plutonium using a PSresin based on Aliquat·336 was developed. Different sample treatments have been studied under acidic conditions with an ...
Source: Applied Radiation and Isotopes - June 28, 2022 Category: Radiology Authors: A Torres I Gim énez H Bag án A Taranc ón Source Type: research

Development of an equipment for real-time continuous monitoring of alpha and beta radioactivity in river water
Appl Radiat Isot. 2022 Jun 10;187:110322. doi: 10.1016/j.apradiso.2022.110322. Online ahead of print.ABSTRACTDifferent regulations require the monitoring of radioactivity in the environment (e.g., 2013/51/Euratom, Real Decreto 314/2016) to protect the environment and the population from abnormal radioactivity presence caused by natural reasons or discharges or accidents in nuclear installations. Nowadays, the monitoring of α- and β-emitting radionuclides is performed discontinuously in laboratories due to the difficulties in applying classical techniques to continuous measurements. This limits the number of samples that ...
Source: Applied Radiation and Isotopes - June 28, 2022 Category: Radiology Authors: A Taranc ón O Novella M Pujadas M Batlle J Cros J F Garc ía Source Type: research

Study of alpha spectrometry for detection of radon and progeny using gas micro-strip detector
Appl Radiat Isot. 2022 Jun 23;187:110344. doi: 10.1016/j.apradiso.2022.110344. Online ahead of print.ABSTRACTIn this paper, simulation of a gas micro-strip detector by using the MCNPX code, the feasibility of alpha spectroscopy for radon and its progeny has been investigated. Initially, for the verification of the code, the range of alpha particles released from 222Rn gas in the air has been obtained in the standard condition, which is consistent with the experimental results. Subsequently, the energy loss per unit path length, range of alpha particles and radon progeny was measured, then the relationship between the range...
Source: Applied Radiation and Isotopes - June 28, 2022 Category: Radiology Authors: Mehdi Hassanpour Parvin Dehghanipour Mohammadreza Rezaie Marzieh Hassanpour Mohammad Rashed Iqbal Faruque Mayeen Uddin Khandaker Source Type: research

Analysis of coal ash samples from thermal power plants of India for their gallium content using NAA and EDXRF techniques
Appl Radiat Isot. 2022 Jun 15;187:110336. doi: 10.1016/j.apradiso.2022.110336. Online ahead of print.ABSTRACTCoal fly ash (CFA) is an important secondary source for the recovery of gallium (Ga) which has a high potential for its wide applications in many strategic fields such as cellular communications and direct broadcast satellite. Various coal fly and bottom ash samples obtained from thermal power plants located in different parts of India were investigated for their gallium content using NAA and EDXRF techniques. The concentration of gallium in NIST SRM 1633b CFA is not available in NIST certificate and hence was estab...
Source: Applied Radiation and Isotopes - June 28, 2022 Category: Radiology Authors: Manish Chand G V S Ashok Kumar R Senthilvadivu K Usha Lakshmi Md Serajuddin G Ramadevi R Kumar Source Type: research

Role of gamma radiation on functional expression of the voltage-gated potassium channel Kv10.1 and its importance in the radiobiological response
Appl Radiat Isot. 2022 Jun 16;187:110331. doi: 10.1016/j.apradiso.2022.110331. Online ahead of print.ABSTRACTExposure of biological systems to a radiation absorbed dose produces early and late radiogenic responses, such as ion channel modulation, oxidative stress, cell migration enhancement, and metabolic changes that could impact the efficiency of radiotherapy. To understand how radiation modulates ion channels, we irradiated HEK cells stably expressing the human ether à-go-go potassium channel-1 with gamma photons in the dose range of 2-10 Gy (60Co, 0.2 Gy/min) and measured ionic currents generated by the channel. The i...
Source: Applied Radiation and Isotopes - June 28, 2022 Category: Radiology Authors: Enoch Luis C ésar Oliver Lara Figueroa Mar ía Luisa Durán Pastén Erika Patricia Azor ín Vega Source Type: research

Simplified efficiency calibration methods for semiconductor detectors used in criticality dosimetry
Appl Radiat Isot. 2022 Jun 18;187:110335. doi: 10.1016/j.apradiso.2022.110335. Online ahead of print.ABSTRACT"Oversimplified" and "simplified" methods based on true coincidence summing effect used in uncomplicated determination of the photo-peak efficiency of the semiconductor High Purity Germanium (HPGe) detector system are suggested and verified. The methods and calibrated 60Co radioactive source may be used to commission any HPGe detector to use during potential criticality event. The determined accuracy of the semiconductor HPGe detector system using this method is a few percent (for the detector system used in this st...
Source: Applied Radiation and Isotopes - June 28, 2022 Category: Radiology Authors: Victor V Golovko Source Type: research

Determination of the radiological properties of materials: A new approximation method for calculation of the mass attenuation coefficients
Appl Radiat Isot. 2022 Jun 22;187:110340. doi: 10.1016/j.apradiso.2022.110340. Online ahead of print.ABSTRACTDosimetric measurements of the medical LINAC device using phantoms are an important procedure to determine the correct delivery dose on the target volume. The percentage depth dose values of RW3, SW557, ABS, epoxy, PRESAGE phantom materials obtained from a simulation program were compared with those experimentally measured with water phantom at 6 and 18 MV photon energy spectrums. The values of energy spectrums of photons were taken from the database of Elekta Synergy Linear Accelerator device and defined in GATE/Ge...
Source: Applied Radiation and Isotopes - June 28, 2022 Category: Radiology Authors: Ay şe Kaşkaş Turan Şahmaran Source Type: research

Analysis of isotopes of plutonium in water samples with a PSresin based on aliquat ·336
Appl Radiat Isot. 2022 Jun 17;187:110333. doi: 10.1016/j.apradiso.2022.110333. Online ahead of print.ABSTRACTThere is a necessity to have techniques capable to perform rapid determinations of specific radionuclides with the aim to provide fast response in emergency situations where a large number of samples need to be measured in a short time. Plastic Scintillation Resins (PSresins) raises as an adequate tool to achieve this purpose and in the present study a methodology to determine plutonium using a PSresin based on Aliquat·336 was developed. Different sample treatments have been studied under acidic conditions with an ...
Source: Applied Radiation and Isotopes - June 28, 2022 Category: Radiology Authors: A Torres I Gim énez H Bag án A Taranc ón Source Type: research

Surface modification of acid-functionalized mesoporous gamma-alumina for non-fission < sup > 99 < /sup > Mo/ < sup > 99m < /sup > Tc generator
Appl Radiat Isot. 2022 Jun 21;187:110342. doi: 10.1016/j.apradiso.2022.110342. Online ahead of print.ABSTRACTMesoporous gamma-alumina (MGA) was synthesized for neutron-activated 99Mo adsorbent. Acid functionalization of the MGA was carried out to enhance the Mo adsorption capacity and the 99Mo breakthrough profile. The acid-treated MGA has a more positive particle charge, rougher surface, smaller particle and pore size, larger surface area, and wider pore distance. The acid-treated MGA has a Mo adsorption capacity of 82.8 ± 6.3 mg Mo/g and resulted in 99mTc eluate with the 99Mo breakthrough at the acceptable level.PMID:35...
Source: Applied Radiation and Isotopes - June 27, 2022 Category: Radiology Authors: None Marlina E Sarmini E Lestari C Pratama A Nurmanjaya None Sriyono None Abidin F Triyatna None Kadarisman A Aries S Febriana H Setiawan I Saptiama None Mujamilah A Patriati R Awaludin Y Yulizar Source Type: research

Evaluation of artificial neural network designs for Gafchromic ™ film calibration with Tc-99m and digital photos
Appl Radiat Isot. 2022 Jun 16;187:110311. doi: 10.1016/j.apradiso.2022.110311. Online ahead of print.NO ABSTRACTPMID:35753171 | DOI:10.1016/j.apradiso.2022.110311 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - June 26, 2022 Category: Radiology Authors: D éte van Eeden Maria M Joubert Frederik Carl Philippus du Plessis Source Type: research

Evaluation of artificial neural network designs for Gafchromic ™ film calibration with Tc-99m and digital photos
Appl Radiat Isot. 2022 Jun 16;187:110311. doi: 10.1016/j.apradiso.2022.110311. Online ahead of print.NO ABSTRACTPMID:35753171 | DOI:10.1016/j.apradiso.2022.110311 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - June 26, 2022 Category: Radiology Authors: D éte van Eeden Maria M Joubert Frederik Carl Philippus du Plessis Source Type: research

Evaluation of the probability distribution of radioactivity estimated by inverse problem solution using Monte Carlo Method
In this study, we derived the posterior probability distribution of the total activity estimated by inverse problem solution. The posterior probability distribution was derived by applying the Monte Carlo approach of the GUM Supplement 1 to the model of evaluation. The decision threshold, the detection limit, and the limits of the coverage interval for the results, all of which are defined in ISO 11929-2 as characteristic limits, were also derived.PMID:35752112 | DOI:10.1016/j.apradiso.2022.110338 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - June 25, 2022 Category: Radiology Authors: Hirotaka Sakai Taiki Yoshii Akira Yunoki Source Type: research

Influx of radioactive gas in norm occurrences in Northeastern Brazil
Appl Radiat Isot. 2022 Jun 15;187:110319. doi: 10.1016/j.apradiso.2022.110319. Online ahead of print.ABSTRACTRadon and progeny are potentially relevant in radioecological studies, as they contribute more than half of the exposure to environmental radiation. The investigation of 222Rn in internal environments of municipalities of Paraíba and Rio Grande do Norte in Brazil was carried out using passive dosimetry with α Espec-222, installed in environments selected by the history of natural radiative occurrences. The monitoring time was eight months to consider seasonal influence. Concentrations from 26.91 to 316.35 Bq m-3 w...
Source: Applied Radiation and Isotopes - June 25, 2022 Category: Radiology Authors: Josineide Marques do Nascimento Santos Jos é Araújo Dos Santos Júnior Romilton Dos Santos Amaral Zahily Herrero Fern ández Mariana Brayner Cavalcanti Freire Bezerra Filipe Lopes de Barros Correia Eduardo Eudes N óbrega Araújo Cassya Regina Pereira G Source Type: research

Evaluation of the probability distribution of radioactivity estimated by inverse problem solution using Monte Carlo Method
In this study, we derived the posterior probability distribution of the total activity estimated by inverse problem solution. The posterior probability distribution was derived by applying the Monte Carlo approach of the GUM Supplement 1 to the model of evaluation. The decision threshold, the detection limit, and the limits of the coverage interval for the results, all of which are defined in ISO 11929-2 as characteristic limits, were also derived.PMID:35752112 | DOI:10.1016/j.apradiso.2022.110338 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - June 25, 2022 Category: Radiology Authors: Hirotaka Sakai Taiki Yoshii Akira Yunoki Source Type: research

Influx of radioactive gas in norm occurrences in Northeastern Brazil
Appl Radiat Isot. 2022 Jun 15;187:110319. doi: 10.1016/j.apradiso.2022.110319. Online ahead of print.ABSTRACTRadon and progeny are potentially relevant in radioecological studies, as they contribute more than half of the exposure to environmental radiation. The investigation of 222Rn in internal environments of municipalities of Paraíba and Rio Grande do Norte in Brazil was carried out using passive dosimetry with α Espec-222, installed in environments selected by the history of natural radiative occurrences. The monitoring time was eight months to consider seasonal influence. Concentrations from 26.91 to 316.35 Bq m-3 w...
Source: Applied Radiation and Isotopes - June 25, 2022 Category: Radiology Authors: Josineide Marques do Nascimento Santos Jos é Araújo Dos Santos Júnior Romilton Dos Santos Amaral Zahily Herrero Fern ández Mariana Brayner Cavalcanti Freire Bezerra Filipe Lopes de Barros Correia Eduardo Eudes N óbrega Araújo Cassya Regina Pereira G Source Type: research