Nuclear Engineering and Technology最新文献_第8页

Assessing dose variability in PET/CT-based voxel dosimetry for Y-90 radioembolization 评估基于PET/ ct的体素剂量法用于Y-90放射栓塞的剂量变异性

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-08-20 DOI: 10.1016/j.net.2025.103856

Sangseok Ha , Jieun Han , Seohan Kim , Dong-san Kang , Wonmo Sung

{"title":"Assessing dose variability in PET/CT-based voxel dosimetry for Y-90 radioembolization","authors":"Sangseok Ha , Jieun Han , Seohan Kim , Dong-san Kang , Wonmo Sung","doi":"10.1016/j.net.2025.103856","DOIUrl":"10.1016/j.net.2025.103856","url":null,"abstract":"<div><h3>Purpose</h3><div>This study aimed to evaluate the impact of calculation parameters on organ dose coefficients in image-based dosimetry for Yttrium-90 (Y-90) transarterial radioembolization (TARE).</div></div><div><h3>Methods</h3><div>Patient-specific dose coefficient maps were generated using PET/CT images from six hepatocellular carcinoma patients using TOPAS Monte Carlo simulations. To reduce spurious activity, PET values below varying thresholds (0, 50, and 100 kBq/mL) were excluded, and the effect of these thresholds on dose coefficients was assessed. The influence of CT Hounsfield unit conversion was examined by varying the number of materials from 1 to 24. The effects of dose calculation method, physics models, and voxel sizes on dose coefficients were systematically investigated.</div></div><div><h3>Results</h3><div>Spurious activity was the dominant factor influencing the variability of the dose coefficient. Adapting the activity threshold resulted in the mean difference of 38.8 (15.2 %), 3.3 (11.9 %), and 0.1 (6.5 %) Gy/GBq for the tumor, liver, and lungs. The mean difference of lung dose coefficient (1.1 Gy/GBq, 67.2 %) between single and 24 materials. The dose calculation method, physics model, and PET voxel size had a relatively small impact on variability.</div></div><div><h3>Conclusions</h3><div>This study systematically evaluated potential factors contributing variability of dose coefficient after Y-90 TARE, with spurious activity identified as a major factor.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"57 12","pages":"Article 103856"},"PeriodicalIF":2.6,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural and topological insights into gamma-ray shielding of pyroxene crystals 辉石晶体屏蔽伽马射线的结构和拓扑研究

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-08-20 DOI: 10.1016/j.net.2025.103853

I. Alhagaish, M. Alobeid, Z.Y. Khattari

{"title":"Structural and topological insights into gamma-ray shielding of pyroxene crystals","authors":"I. Alhagaish, M. Alobeid, Z.Y. Khattari","doi":"10.1016/j.net.2025.103853","DOIUrl":"10.1016/j.net.2025.103853","url":null,"abstract":"<div><div>This work explores the gamma-ray shielding properties of different pyroxene crystals (XY(Si,Al)2O6; X, Y = cations), focusing on clinopyroxenes and orthopyroxenes. The shielding parameters, including the MAC, LAC, and Z<sub>eff</sub>, were evaluated using structural and compositional data. Clinopyroxenes, such as Hedenbergite (density = 3.56 g/cm<sup>3</sup>, MAC = 1.002 cm<sup>2</sup>/g, Z<sub>eff</sub> = 20.62) and Aegirine (density = 3.55 g/cm<sup>3</sup>, MAC = 1.107 cm<sup>2</sup>/g, Z<sub>eff</sub> = 21.66), exhibit superior shielding capabilities, particularly at low photon energies. Orthopyroxenes, such as Ferrosilite (density = 3.25 g/cm<sup>3</sup>, MAC = 0.999 cm<sup>2</sup>/g, Z<sub>eff</sub> = 20.72) and Hypersthene (density = 3.50 g/cm<sup>3</sup>, MAC = 0.699 cm<sup>2</sup>/g, Z<sub>eff</sub> = 17.67), offer competitive performance in specific scenarios. The study highlights the critical role of density, atomic packing, and anion-cation radii ratios (R<sub>AC</sub> = 0.429−1.143) in determining radiation attenuation. Structural compactness, as revealed by Hirshfeld surface analysis, further enhances γ-ray shielding properties. These findings underscore the potential of pyroxenes as advanced shielding materials for high-energy environments, with applications in optical and electronic fields.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"57 12","pages":"Article 103853"},"PeriodicalIF":2.6,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Cs-Ion on the corrosion properties of implant materials 铯离子对种植材料腐蚀性能的影响

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-08-20 DOI: 10.1016/j.net.2025.103857

Murat Bi̇len , Zübeyde Özkan , İrem Balci , Uğur Gökmen , Sema Bilge Ocak

引用次数: 0

Determination of the effective atomic number of materials using 59.54 keV gamma rays through theoretical approaches and MCNP simulation 利用59.54 keV伽马射线通过理论方法和MCNP模拟确定材料的有效原子序数

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-08-20 DOI: 10.1016/j.net.2025.103866

H. Sabouri-Gerdeh, F. Zolfagharpour

{"title":"Determination of the effective atomic number of materials using 59.54 keV gamma rays through theoretical approaches and MCNP simulation","authors":"H. Sabouri-Gerdeh, F. Zolfagharpour","doi":"10.1016/j.net.2025.103866","DOIUrl":"10.1016/j.net.2025.103866","url":null,"abstract":"<div><div>In this Study, we aimed to calculate the effective atomic number (<span><math><mrow><msub><mi>Z</mi><mtext>eff</mtext></msub></mrow></math></span>) of commonly used alloy, polymer, and compound materials by computing Rayleigh and Compton scattering cross-sections using MCNP simulations and theoretical methods. The simulations were performed under experimental conditions, where the samples were exposed to emitted gamma rays from a <sup>241</sup>Am source, and the Rayleigh-to-Compton (R/C) ratio of them was measured at a 70° scattering angle with an HPGe detector. The simulation results shows that, <span><math><mrow><msub><mi>Z</mi><mtext>eff</mtext></msub></mrow></math></span> values ranged from 6.32 (Bakelite) to 67.37 (HgI<sub>2</sub>) across 25 materials. These values were also calculated using 15 theoretical methods and compared with available experimental results across different energies. Statistical analysis shows strong correlations (0.746–0.999) between material characteristics (ρ, μ<sub>m</sub>, σ<sub>a</sub>, σ<sub>e</sub>, σ<sub>m</sub>, N<sub>e</sub>) and results from experimental, theoretical, and simulation methods. Correlation coefficients between simulation, experimental, and theoretical results, especially between experimental and simulation results are very high (0.997–0.999) with P-values below 0.008, which indicates the significance of the results of this Study and the effectiveness of this method in determining <span><math><mrow><msub><mi>Z</mi><mtext>eff</mtext></msub></mrow></math></span> for different materials. Our results also showed that the dependence of the quantity R/C on <span><math><mrow><msub><mi>Z</mi><mtext>eff</mtext></msub></mrow></math></span> for heavy and light materials are respectively <span><math><mrow><msubsup><mi>Z</mi><mtext>eff</mtext><mn>4.38</mn></msubsup></mrow></math></span> and <span><math><mrow><msubsup><mi>Z</mi><mtext>eff</mtext><mn>2.46</mn></msubsup></mrow></math></span>.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"58 1","pages":"Article 103866"},"PeriodicalIF":2.6,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144933545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Modeling the mass attenuation coefficient for Lead-Titanium-Zinc borate glasses using a piecewise power law model 采用分段幂律模型对硼酸铅钛锌玻璃的质量衰减系数进行建模

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-08-20 DOI: 10.1016/j.net.2025.103836

Raed R. Abu Awwad , Baha’ Abughazaleh , M.I. Sayyed

引用次数: 0

Residence time distribution measurement of process fluids in a pulse disc and doughnut column using radiotracer 用放射性示踪剂测量工艺流体在脉冲盘和甜甜圈柱中的停留时间分布

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-08-20 DOI: 10.1016/j.net.2025.103869

S. Goswami , S. Sarkar , J. Biswal , S.K. Gupta , K.K. Singh , V.K. Sharma

{"title":"Residence time distribution measurement of process fluids in a pulse disc and doughnut column using radiotracer","authors":"S. Goswami , S. Sarkar , J. Biswal , S.K. Gupta , K.K. Singh , V.K. Sharma","doi":"10.1016/j.net.2025.103869","DOIUrl":"10.1016/j.net.2025.103869","url":null,"abstract":"<div><div>To meet the increasing demand for basic metals, efficient hydrometallurgical reactors are essential for processing low-grade ores. The pulsed disc and doughnut column (PDDC) is a promising reactor for extracting metal ions from such ores. Accurate estimation of mean residence time (MRT) and back-mixing parameters is critical for the scale-up and efficient operation of the PDDC. In this study, the residence time distribution (RTD) of both aqueous and organic phases was measured using radiotracers to determine key process characteristics. A radiotracer in a suitable chemical form was instantaneously injected as a pulse, and its movement was monitored at the inlet and outlet of the PDDC's active section. The RTD data were analyzed to estimate MRT and simulated using the axial dispersion model and backflow tanks-in-series model to quantify back-mixing. The results indicated that both MRT and back-mixing were significantly influenced by continuous and dispersed phase flow rates and pulsing velocity. The aqueous phase exhibited flow behavior close to plug flow, while the organic phase showed mixed flow characteristics, in line with the PDDC design. These findings are essential for optimizing PDDC performance and improving metal extraction from low-grade ores.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"58 1","pages":"Article 103869"},"PeriodicalIF":2.6,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144916626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and performance analysis of 15MWth SCO2-cooled micro reactor 15msco2冷却微堆设计与性能分析

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-08-19 DOI: 10.1016/j.net.2025.103863

Yuandong Zhang , Ren Li , Bowen Zhang , Yiran Miao , Chao Guo , Genglei Xia , Minjun Peng

{"title":"Design and performance analysis of 15MWth SCO2-cooled micro reactor","authors":"Yuandong Zhang , Ren Li , Bowen Zhang , Yiran Miao , Chao Guo , Genglei Xia , Minjun Peng","doi":"10.1016/j.net.2025.103863","DOIUrl":"10.1016/j.net.2025.103863","url":null,"abstract":"<div><div>Supercritical carbon dioxide (SCO<sub>2</sub>)-cooled reactors leverage the drastic variations in thermophysical properties near the critical point to achieve high-density compressor operation and low-density reactor operation. This unique characteristic enables enhanced thermal efficiency at moderate reactor outlet temperature while improving the economic viability and operational safety. Furthermore, SCO<sub>2</sub>-based turbomachinery (e.g., turbine and compressor) exhibits exceptional compactness, facilitating modular design and miniaturization potential. These combined advantages have positioned SCO<sub>2</sub>-cooled reactor as a prominent research focus in nuclear engineering worldwide. This study presents the comprehensive design and performance evaluation of a 15MW<sub>th</sub> SCO<sub>2</sub>-cooled Micro Reactor (SCMR-15). The core configuration was optimized through multiphysics modeling, where thermal-hydraulic calculations determined fundamental dimensions, and Monte Carlo simulations using OpenMC code resolved neutronics characteristics and reactivity control mechanisms. Computational analyses demonstrated: (1) The control drum system provides sufficient shutdown margin, exceeding safety requirements; (2) Key performance metrics, including power peaking factor, fuel pellet maximum temperature, and cladding peak temperature, remain well below design thresholds; (3) Inherent safety features are ensured by consistently negative temperature reactivity coefficients and void coefficients.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"57 12","pages":"Article 103863"},"PeriodicalIF":2.6,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144895132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improved HUST-PTF beamline control system for beam commissioning 改进HUST-PTF波束线控制系统，用于波束调试

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-08-19 DOI: 10.1016/j.net.2025.103865

Chengyong Liu, Yu Chen, Dong Li, Qushan Chen, Shaokun Zhou, Lingfeng Shu, Zhenyi Yang, Bin Qin

引用次数: 0

Explainable machine learning-based meta-modeling for predicting fire damage to motor control cabinets in a switchgear room 可解释的基于机器学习的元模型，用于预测开关机房电机控制柜的火灾损坏

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-08-19 DOI: 10.1016/j.net.2025.103862

Jongkook Heo , Yu Zhang , Jinsoo Bae , Saerin Lim , Weon Gyu Shin , Seoung Bum Kim

{"title":"Explainable machine learning-based meta-modeling for predicting fire damage to motor control cabinets in a switchgear room","authors":"Jongkook Heo , Yu Zhang , Jinsoo Bae , Saerin Lim , Weon Gyu Shin , Seoung Bum Kim","doi":"10.1016/j.net.2025.103862","DOIUrl":"10.1016/j.net.2025.103862","url":null,"abstract":"<div><div>Accurate prediction of damage to cables and cabinets in switchgear rooms during fire emergencies is crucial for personal safety and maintenance planning of critical infrastructure. Traditional software tools, such as consolidated fire and smoke transport (CFAST), are used to simulate fire emergencies based on initial fire conditions. However, applying such physics-based simulators to model sequential fire propagation damage to multiple objects is challenging because of significant computational costs. We propose to use machine learning and deep learning-based surrogate models for real-time fire damage prediction of multiple objects in switchgear rooms. To train the surrogate models, we generated a motor cabinet damage dataset using CFAST simulations of fire propagation in the switchgear room. We also use an explainable artificial intelligence (XAI) technique, Shapley additive explanations (SHAP), to interpret relationships between cabinet damage and initial fire conditions. Experimental results demonstrate that the multi-layer perceptron (MLP) is the most effective model for predicting fire damage of multiple objects. Furthermore, SHAP-based interpretations align closely with the sensitivity analysis results, providing reliable and transparent insights into the model's reasoning process. These results highlight our framework provides more robust and efficient results than the existing physics-based simulators, contributing to advancements in fire safety and resilience technology.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"58 1","pages":"Article 103862"},"PeriodicalIF":2.6,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reducing neutron counting background with binary thin detecting elements on a base of 6Li2O∗2SiO2:Ce/7Li2O∗2SiO2:Ce glass and Gd1,5Y1,5Al2.5Ga2.5O12:Ce,Mg/Y3Al2.5Ga2.5O12:Ce,Mg ceramic scintillators 基于6Li2O∗2SiO2:Ce/7Li2O∗2SiO2:Ce玻璃和gd1,5y1,5al2.5 ga2.5 o12:Ce,Mg/Y3Al2.5Ga2.5O12:Ce，Mg陶瓷闪烁体的二元薄探测元件还原中子计数背景

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-08-19 DOI: 10.1016/j.net.2025.103867

Vitaly Mechinsky , Elizaveta Borisevich , Andrei Fedorov , Olga Akimova , Dmitry Gorshkov , Ilya Lagutskiy , Petr Karpyuk , Damian Komar , Valery Kozemiakin , Ilya Komendo , Ksenia Okhotnikova , Vasilii Retivov , Valentina Smyslova , Andrey Timoshchenko , Mikhail Korzhik

{"title":"Reducing neutron counting background with binary thin detecting elements on a base of 6Li2O∗2SiO2:Ce/7Li2O∗2SiO2:Ce glass and Gd1,5Y1,5Al2.5Ga2.5O12:Ce,Mg/Y3Al2.5Ga2.5O12:Ce,Mg ceramic scintillators","authors":"Vitaly Mechinsky , Elizaveta Borisevich , Andrei Fedorov , Olga Akimova , Dmitry Gorshkov , Ilya Lagutskiy , Petr Karpyuk , Damian Komar , Valery Kozemiakin , Ilya Komendo , Ksenia Okhotnikova , Vasilii Retivov , Valentina Smyslova , Andrey Timoshchenko , Mikhail Korzhik","doi":"10.1016/j.net.2025.103867","DOIUrl":"10.1016/j.net.2025.103867","url":null,"abstract":"<div><div>Binary thin detecting elements on a base of <sup>6</sup>Li<sub>2</sub>O∗2SiO<sub>2</sub>:Ce/<sup>7</sup>Li<sub>2</sub>O∗2SiO<sub>2</sub>:Ce:Ce glass and Gd<sub>1.5</sub>Y<sub>1.5</sub>Al<sub>2.5</sub>Ga<sub>2.5</sub>O<sub>12</sub>:Ce,Mg/Y<sub>3</sub>Al<sub>2.5</sub>Ga<sub>2.5</sub>O<sub>12</sub>:Ce,Mg ceramic scintillators were evaluated for detection of neutrons. Coupling in the detecting unit of neutron-sensitive and insensitive materials with separate photosensors allows the application of different techniques to discriminate gamma-rays background. Sufficient difference in scintillation kinetics of Gd<sub>1.5</sub>Y<sub>1.5</sub>Al<sub>2.5</sub>Ga<sub>2.5</sub>O<sub>12</sub>:Ce and Y<sub>3</sub>Al<sub>2.5</sub>Ga<sub>2.5</sub>O<sub>12</sub>:Ce,Mg allows pulse shape discrimination of gamma-rays of the same energy in a phoswich detecting unit when one photosensor is utilized.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"58 1","pages":"Article 103867"},"PeriodicalIF":2.6,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144916627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0