Journal of Radiation Research and Applied Sciences最新文献

筛选
英文 中文
Multi-property assessment of borate glasses incorporating Dy2O3, Er2O3, and PbO2: mechanical, optical, and radiation shielding aspects 含有Dy2O3, Er2O3和PbO2的硼酸盐玻璃的多属性评估:机械,光学和辐射屏蔽方面
IF 2.5 4区 综合性期刊
Journal of Radiation Research and Applied Sciences Pub Date : 2025-09-16 DOI: 10.1016/j.jrras.2025.101963
M.I. Sayyed , Awatif Alshamari , M.H.A. Mhareb
{"title":"Multi-property assessment of borate glasses incorporating Dy2O3, Er2O3, and PbO2: mechanical, optical, and radiation shielding aspects","authors":"M.I. Sayyed ,&nbsp;Awatif Alshamari ,&nbsp;M.H.A. Mhareb","doi":"10.1016/j.jrras.2025.101963","DOIUrl":"10.1016/j.jrras.2025.101963","url":null,"abstract":"<div><div>This research focused on preparing glasses with the general formula: xPbO<sub>2</sub>-19BaO-11CaO-(70-x-y-z) B<sub>2</sub>O<sub>3</sub>-yDy<sub>2</sub>O<sub>3</sub>-zEr<sub>2</sub>O<sub>3</sub>, (x = 10, 13, 16, and 19 mol%, y and z = 0.25, 0.5, 0.75, and 1 mol%) and investigated their optical, mechanical, and radiation shielding characteristics. The UV-Viv absorption spectra were used to determine the band gap and optical properties, while the mechanical features were determined using the Makishima and Mackenzie models. The band gap values displayed a progressive decrease with the addition of PbO<sub>2</sub>, Dy<sub>2</sub>O<sub>3</sub>, and Er<sub>2</sub>O<sub>3</sub>, and their values were 3.048, 3.008, 2.968, and 2.921 eV for DyEr0.25, DyEr0.5, DyEr0.75, and DyEr1. The mechanical properties also showed a reduction. For example, the recorded Young's modulus (E) values were 88.957, 85.157, 83.472, and 82.886 GPa for DyEr0.25, DyEr0.5, DyEr0.75, and DyEr1 samples. The mass attenuation coefficient (MAC) and related radiation shielding parameters for the glasses were evaluated using Phy-X software in the energy range of 0.122–0.964 MeV, corresponding to the energies emitted from the Eu-152 source. The MAC started with the highest values of 1.129–1.541 cm<sup>2</sup>/g at 0.122 MeV and decreased as the energy increased, indicating high protection performance for these glasses at 0.122 MeV. The linear attenuation coefficient (LAC) showed a positive correlation with density. The effective atomic number (Z<sub>eff</sub>) also increased with the addition of PbO<sub>2</sub>, Dy<sub>2</sub>O<sub>3</sub>, and Er<sub>2</sub>O<sub>3</sub> to the glasses. At 0.122 MeV, Z<sub>eff</sub> increased by 18.7 % when the PbO<sub>2</sub> content was raised from 10 to 19 mol%, and Dy<sub>2</sub>O<sub>3</sub> and Er<sub>2</sub>O<sub>3</sub> increased from 0.25 to 1 mol%.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 4","pages":"Article 101963"},"PeriodicalIF":2.5,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling to disability and radiation therapy data: Using the Harris extended Zeghdoudi model 对残疾和放射治疗数据建模:使用Harris扩展Zeghdoudi模型
IF 2.5 4区 综合性期刊
Journal of Radiation Research and Applied Sciences Pub Date : 2025-09-15 DOI: 10.1016/j.jrras.2025.101895
Atef F. Hashem , Mohamed A. Abdelkawy , M.M. Abd El-Raouf , Ahmed M. Felifel
{"title":"Modeling to disability and radiation therapy data: Using the Harris extended Zeghdoudi model","authors":"Atef F. Hashem ,&nbsp;Mohamed A. Abdelkawy ,&nbsp;M.M. Abd El-Raouf ,&nbsp;Ahmed M. Felifel","doi":"10.1016/j.jrras.2025.101895","DOIUrl":"10.1016/j.jrras.2025.101895","url":null,"abstract":"<div><div>This article provides a detailed baseline description of vision disability in Saudi Arabia, including the prevalence by administrative area, the total population affected by the disability, and the severity (severe or blind) among those 2 years and older, providing essential demographic data that will help shape national policy and planning initiatives. In addition to this comparison, to assess the validity of the performance of the statistical modeling, the analysis is based on a second data set that serves to reflect the true expected survival rates for patients with head and neck cancer (HNC) treated with chemotherapy and radiation therapy. The Harris extended Zeghdoudi distribution (HEZD) can be considered as an improved version of the Zeghdoudi distribution (ZD), based on the Harris extended generated family of distributions. The probability density curves of HEZD show a great importance of HEZD in assessing disability in the Kingdom of Saudi Arabia and radiation. Researchers have a lot of latitude in designing statistical models for studies that involve disability with radiation data, given that the HRF for HEZD can have increasing functions. Some important characteristics of HEZD are obtained, such as quantile function, moments, MGF, incomplete moments, and order statistics. To estimate the parameters of HEZD, we used data correlated with disabilities and radiation and applied various estimation techniques. To test the efficiency of the proposed distribution, two data sets for the disability ratio in the Kingdom of Saudi Arabia and radiation fields were used. To address the fit in modeling data in increasingly complex fields that include disabilities, the HEZD has been recommended based on its improved fit capabilities.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 4","pages":"Article 101895"},"PeriodicalIF":2.5,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal performance analysis of parabolic trough solar collectors equipped with elliptical absorber tubes 椭圆吸收管抛物面槽太阳能集热器热性能分析
IF 2.5 4区 综合性期刊
Journal of Radiation Research and Applied Sciences Pub Date : 2025-09-15 DOI: 10.1016/j.jrras.2025.101953
Amina Benabderrahmane , Ahmed Kadhim Hussein , Samir Laouedj , Chemseddine Maatki , Karim Kriaa , Badr M. Alshammari , Lioua Kolsi , Sajjad Firas Abdulameer
{"title":"Thermal performance analysis of parabolic trough solar collectors equipped with elliptical absorber tubes","authors":"Amina Benabderrahmane ,&nbsp;Ahmed Kadhim Hussein ,&nbsp;Samir Laouedj ,&nbsp;Chemseddine Maatki ,&nbsp;Karim Kriaa ,&nbsp;Badr M. Alshammari ,&nbsp;Lioua Kolsi ,&nbsp;Sajjad Firas Abdulameer","doi":"10.1016/j.jrras.2025.101953","DOIUrl":"10.1016/j.jrras.2025.101953","url":null,"abstract":"<div><div>The current study consist of a three-dimensional numerical simulation for steady state and turbulent flow conditions on the thermal performances of a parabolic trough solar collector (PTC) equipped with an elliptical absorber tube. The variation of the absorber tube's aspect ratio (a/b) on heat transfer, thermal efficiency, and exergetic efficiency was investigated under the effect of a non-uniform heat flux condition. ANSYS Fluent was utilized to simulate turbulent fluid flow and convective heat transfer inside the absorber tube, using Therminol VP-1 as the working fluid. The results show that the elliptical absorber tubes having smaller aspect ratios significantly raise the outlet fluid temperature and overall thermal efficiency, yielding improvements of up to 2.3 % in thermal efficiency and 7.78 % in exergetic efficiency. However, the use of an elliptical cross-sectional shape lead only to a marginal reduction in thermal losses. In conclusion, the use of elliptical absorbers in PTC systems show a good potential for the enhancement of the performances, particularly in low aspect ratio configurations, providing insights for future optimization of concentrated solar power systems.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 4","pages":"Article 101953"},"PeriodicalIF":2.5,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dual therapeutic potential of ethanolic plant extracts in diabetes and liver cancer: Comparative study with liraglutide and doxorubicin 乙醇植物提取物对糖尿病和肝癌的双重治疗潜力:利拉鲁肽和阿霉素的比较研究
IF 2.5 4区 综合性期刊
Journal of Radiation Research and Applied Sciences Pub Date : 2025-09-15 DOI: 10.1016/j.jrras.2025.101961
Mohsen A. Khormi , Amal Naif Alshammari , Rabab A. Hegazy , Amani Alhejely , Eltuhami A. Abdalgadir , Iman K. Abdel Gadir , Hebatollah E. Eitah , Mohammed A. El-Magd , Sultanah Alshammery , Amal A. Abdulbaqi
{"title":"Dual therapeutic potential of ethanolic plant extracts in diabetes and liver cancer: Comparative study with liraglutide and doxorubicin","authors":"Mohsen A. Khormi ,&nbsp;Amal Naif Alshammari ,&nbsp;Rabab A. Hegazy ,&nbsp;Amani Alhejely ,&nbsp;Eltuhami A. Abdalgadir ,&nbsp;Iman K. Abdel Gadir ,&nbsp;Hebatollah E. Eitah ,&nbsp;Mohammed A. El-Magd ,&nbsp;Sultanah Alshammery ,&nbsp;Amal A. Abdulbaqi","doi":"10.1016/j.jrras.2025.101961","DOIUrl":"10.1016/j.jrras.2025.101961","url":null,"abstract":"<div><h3>Background</h3><div>Diabetes mellitus (DM) is a chronic disease that can lead to severe complications, including progressive liver damage and liver cancer if left untreated. Although Liraglutide, a glucagon-like peptide-1 receptor agonist, is effective in managing type 2 DM, its high cost and associated side effects limit its widespread use. This is the first study to systematically compare the therapeutic potential of the five plant ethanolic extracts: <em>Cinnamomum zeylanicum</em>, <em>Nigella sativa</em>, <em>Saussurea lappa</em>, <em>Moringa oleifera</em>, and <em>Curcuma longa</em> with Liraglutide and Doxorubicin for dual antidiabetic and anticancer activities, respectively.</div></div><div><h3>Methods</h3><div>In vitro cytotoxicity was assessed in HepG2 cells, and in vivo efficacy was tested in alloxan-induced diabetic rats. Effects on glucose regulation, oxidative stress, inflammation, and liver histopathology were evaluated. Molecular pathway analysis focused on the Nrf2/HO-1/NQO1 and NF-κB/IKK-β signaling mechanisms in the pancreas.</div></div><div><h3>Results</h3><div>Among the tested ethanolic extracts, <em>S</em>. <em>lappa</em>, <em>N</em>. <em>sativa</em>, and <em>M</em>. <em>oleifera</em> showed the most potent cytotoxic effects on HepG2 cells. In diabetic rats, all extracts demonstrated improvements in glycemic control, reduced oxidative stress and inflammation, and enhanced liver tissue structure. <em>M. oleifera</em> and <em>C. longa</em> reduced HbA1c levels by &gt;60 % and restored insulin and GLP-1 close to normal levels, showing comparable results to Liraglutide.</div></div><div><h3>Conclusion</h3><div>These findings suggest <em>M. oleifera</em> and <em>C. longa</em> as affordable, accessible, and dual-acting natural alternatives for diabetes and liver cancer management, potentially through modulation of oxidative stress and inflammatory pathways. Further clinical studies are necessary to confirm their therapeutic efficacy in human populations.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 4","pages":"Article 101961"},"PeriodicalIF":2.5,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of displacement, artifacts, thickness variations, and scanning protocols on cone-beam computed tomography image quality and registration accuracy in radiotherapy 位移、伪影、厚度变化和扫描方案对放射治疗中锥束计算机断层成像质量和配准精度的影响
IF 2.5 4区 综合性期刊
Journal of Radiation Research and Applied Sciences Pub Date : 2025-09-15 DOI: 10.1016/j.jrras.2025.101966
Dan Chen , Qingfeng Jiang , Kui Liao, Shunlong Wu
{"title":"Impact of displacement, artifacts, thickness variations, and scanning protocols on cone-beam computed tomography image quality and registration accuracy in radiotherapy","authors":"Dan Chen ,&nbsp;Qingfeng Jiang ,&nbsp;Kui Liao,&nbsp;Shunlong Wu","doi":"10.1016/j.jrras.2025.101966","DOIUrl":"10.1016/j.jrras.2025.101966","url":null,"abstract":"<div><h3>Objectives</h3><div>To evaluate the impact of displacement, anatomical thickness variations, artifacts and scanning protocols on cone-beam computed tomography(CBCT) image quality and registration accuracy of plan CT(pCT)-CBCT in image-guided radiation therapy(IGRT).</div></div><div><h3>Methods</h3><div>A Catphan 504 phantom and an anthropomorphic head phantom were utilized to assess image quality and registration errors, respectively. Controlled phantom displacements (5 mm vertical, longitudinal, and lateral), addition of a 2 cm resin bolus or 0.25 mm lead apron to mimic displacement, anatomical thickness variations and artifacts, respectively. Nine preset CBCT scanning protocols, in addition to an adjustable lowest-dose protocol were tested under six mimic scenarios. Visual spatial resolution, MTF10 %, uniformity, and contrast-to-noise ratio [CNR] and registration errors (translation/rotation errors) were analyzed.</div></div><div><h3>Results</h3><div>A total of 180 catphan and 180 head phantom scans yielded 360 registration outcomes. Displacement, anatomical thickness variation, artifacts, and scanning protocols significantly impacted image quality (spatial resolution, uniformity, CNR; <em>p</em> &lt; 0.05). Translational registration errors increased with displacement, thickness variation and artifacts, while scanning protocols and registration methods exhibited no significant effect. Rotational errors were influenced by displacement, artifacts, and registration methods (p &lt; 0.05) but not by protocols or thickness variation. The lowest-dose protocol markedly degraded uniformity and CNR without compromising registration accuracy.</div></div><div><h3>Conclusions</h3><div>Displacement, anatomical thickness variations, and artifacts significantly impair CBCT image quality and registration accuracy. Scanning protocols modulate image quality, but do not detrimentally affect registration accuracy in head phantom. The preset CBCT scanning protocol of linear accelerator requires optimization to prioritize clinical objectives while balancing radiation exposure with registration performance.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 4","pages":"Article 101966"},"PeriodicalIF":2.5,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Management strategies for pT1 rectal cancer following local excision: Insights from a national survey by the AIRO gastrointestinal study group 局部切除后pT1期直肠癌的管理策略:来自AIRO胃肠道研究小组的一项全国调查的见解
IF 2.5 4区 综合性期刊
Journal of Radiation Research and Applied Sciences Pub Date : 2025-09-15 DOI: 10.1016/j.jrras.2025.101955
Elena Galofaro , Paola De Franco , Federico Barbaro , Roberta Menghi , Silvia Pecere , Angela Romano , Silvia Di Franco , Rita Marina Niespolo , Mariantonietta Gambacorta , Giuditta Chiloiro
{"title":"Management strategies for pT1 rectal cancer following local excision: Insights from a national survey by the AIRO gastrointestinal study group","authors":"Elena Galofaro ,&nbsp;Paola De Franco ,&nbsp;Federico Barbaro ,&nbsp;Roberta Menghi ,&nbsp;Silvia Pecere ,&nbsp;Angela Romano ,&nbsp;Silvia Di Franco ,&nbsp;Rita Marina Niespolo ,&nbsp;Mariantonietta Gambacorta ,&nbsp;Giuditta Chiloiro","doi":"10.1016/j.jrras.2025.101955","DOIUrl":"10.1016/j.jrras.2025.101955","url":null,"abstract":"<div><h3>Purpose</h3><div>This national survey aimed to evaluate current clinical practices for managing pT1 rectal cancer post-local excision (LE) in Italian radiotherapy (RT) centers, focusing on high-risk cases.</div></div><div><h3>Materials and methods</h3><div>Conducted from July to October 2024, a cross-sectional survey with 40 questions was distributed to 183 heads of radiation oncology departments. Quantitative data were collected through closed-ended questions, while qualitative feedback was grouped thematically.</div></div><div><h3>Results</h3><div>The survey yielded responses from 54 centers. Multidisciplinary team discussions were common (96.2 %). Surgical re-excision or total mesorectal excision (TME) was the primary management for high-risk cases, with RT used in only 7.4 % of cases, primarily for patients declining surgery. Key local recurrence risks identified by respondents include deep margin &lt;1 mm (96.2 %), high tumor grading (72.2 %), lymphovascular infiltration (64.8 %), and tumor budding (51.9 %). For regional recurrence, the main risk factors identified were lymphovascular infiltration (90.7 %), high tumor grading (83.3 %), and perineural infiltration (72.2 %). Significant variability was observed in RT techniques and target volumes. Elective volume recommendations were split between 45 Gy and 50 Gy, while surgical bed doses ranged from 50–50.4 Gy to 54–55 Gy. Most centers included the complete mesorectum and elective lymph nodes in treatment volumes, though some limited treatment to the surgical scar and mesorectum. Follow-up practices also showed considerable heterogeneity.</div></div><div><h3>Conclusion</h3><div>This survey highlights significant variability in pT1 rectal cancer management post-LE across Italian centers, underscoring the necessity for standardized guidelines, and providing a foundation for future multicenter studies to optimize patient care.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 4","pages":"Article 101955"},"PeriodicalIF":2.5,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A new probability distribution with properties and statistical analysis of the human resource and radiation data 一种新的具有性质的概率分布及其对人力资源和辐射数据的统计分析
IF 2.5 4区 综合性期刊
Journal of Radiation Research and Applied Sciences Pub Date : 2025-09-15 DOI: 10.1016/j.jrras.2025.101927
Ningxin Jin, Yumei Wang, Sheng Cheng, Yixin He
{"title":"A new probability distribution with properties and statistical analysis of the human resource and radiation data","authors":"Ningxin Jin,&nbsp;Yumei Wang,&nbsp;Sheng Cheng,&nbsp;Yixin He","doi":"10.1016/j.jrras.2025.101927","DOIUrl":"10.1016/j.jrras.2025.101927","url":null,"abstract":"<div><div>To assist researchers in optimally fitting practical events and strengthen the available data analysis toolkits, we propose a new distributional method constructed using a trigonometric function. Henceforth, the proposed method is based on the cosine function and referred to as a new cosine trigonometric-<span><math><mi>G</mi></math></span> (NCT-<span><math><mi>G</mi></math></span>) function. The incorporation of the cosine function in the development of the NCT-<span><math><mi>G</mi></math></span> method leads to significantly improved and optimal versions of the conventional probability distributions. By applying the NCT-<span><math><mi>G</mi></math></span> method, we concentrate on a new variant of the Weibull distribution, namely, a new cosine trigonometric Weibull (NCT-Weibull) distribution. Due to the implementation of the cosine function, we promptly show that the NCT-Weibull distribution has more flexibility in terms of density and hazard functions. Some mathematical features of the NCT-Weibull distribution, notably those associated with quartiles, are computed. We derive the estimators for the new distribution. Moreover, we assess these point estimators via conducting simulation studies for various parameter values. Finally, intending to establish the fitting superiority of the NCT-Weibull distribution, we consider two data sources from the human resource and radiation science. According to certain fitting criteria, the empirical exploration indicates that the NCT-Weibull distribution demonstrates optimal performance.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 4","pages":"Article 101927"},"PeriodicalIF":2.5,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Heat and mass transfer in magnetized Casson fluid flow with entropy generation effects 熵产效应下磁化卡森流体的传热传质
IF 2.5 4区 综合性期刊
Journal of Radiation Research and Applied Sciences Pub Date : 2025-09-15 DOI: 10.1016/j.jrras.2025.101954
T.N. Abdelhameed
{"title":"Heat and mass transfer in magnetized Casson fluid flow with entropy generation effects","authors":"T.N. Abdelhameed","doi":"10.1016/j.jrras.2025.101954","DOIUrl":"10.1016/j.jrras.2025.101954","url":null,"abstract":"<div><div>The entropy generation privileged novel contribution in different heat management systems, thermal processes and energy conversion. The performances of heat transfer in various thermal systems are associated to the optimize thermal performances which can be ensured with applications of entropy generations. The motivated research aims to present the significance of entropy generation for natural convective flow of Casson fluid due to vertical porous flat plate. The insight of heat and mass transfer is subject to applications of mixed convection phenomenon. The transport problem further addressed the amplification of heat absorption/generation and chemical reaction effects. A Laplace computation technique is followed to solve the problem. Physical significance of modeled parameter is address for the entropy generation and Bejan number. It has been observed that the entropy generation enhances due to Brinkman number. The Bejan number reduces due to mass Grashof number. The interaction of magnetic force enhances the entropy generation and Bejan number.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 4","pages":"Article 101954"},"PeriodicalIF":2.5,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel robust adaptive decomposition approach for solar energy potential using atmospheric transparency and UV radiation indicators 利用大气透明度和紫外线辐射指标对太阳能潜力进行鲁棒自适应分解
IF 2.5 4区 综合性期刊
Journal of Radiation Research and Applied Sciences Pub Date : 2025-09-13 DOI: 10.1016/j.jrras.2025.101946
Laiba Sultan Dar , Muhammad Aamir , Seema Bibi , Muhammad Bilal
{"title":"A novel robust adaptive decomposition approach for solar energy potential using atmospheric transparency and UV radiation indicators","authors":"Laiba Sultan Dar ,&nbsp;Muhammad Aamir ,&nbsp;Seema Bibi ,&nbsp;Muhammad Bilal","doi":"10.1016/j.jrras.2025.101946","DOIUrl":"10.1016/j.jrras.2025.101946","url":null,"abstract":"<div><div>In daily life, interest in solar radiation and related climatic factors has increased due to their impact on energy production, food security, agriculture, the ozone layer, and various industrial applications. A new Robust Adaptive Decomposition (RAD) method is introduced in this study to improve the forecasting precision of solar radiation time series data. With an adaptive weighting mechanism that reduces the impact of outliers and large deviations, the RAD method successfully decomposes high-frequency noise from significant signal features. Three solar radiation datasets of different types have been used in the research: ALLSKY_SFC_UV_INDEX (UV index), ALLSKY_KT (clearness index), and ALLSKY_SFC_SW_DWN (daily all-sky surface shortwave downward irradiance). Forecasting precision of the proposed RAD method is tested through cross-validation over three folds and contrasted with ARIMA, LSTM, and hybrid models like VMD-ARIMA and VMD-LSTM. It is hybridized with both conventional and deep learning models (ARIMA and LSTM). The results show RAD-LSTM to have the lowest error rates in Fold 2, whereas RAD-ARIMA performs well in comparison to all the other models on actual datasets, especially in Fold 1 and Fold 3. The ability of RAD-based models to decompose noisy time series into clean, stationary intrinsic mode functions (IMFs) has made them superior as the process becomes easier to model and increases prediction precision. Performance metrics like MAE, RMSE, and MAPE validate the proposed method's robustness and adaptability. The results show RAD's potential as a powerful tool for denoising and improving forecasting precision with far-reaching implications for climate-sensitive decision-making, agriculture, and energy planning.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 4","pages":"Article 101946"},"PeriodicalIF":2.5,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The improved estimates of population proportion using auxiliary attributes: Application in radiation science 利用辅助属性改进的人口比例估计:在辐射科学中的应用
IF 2.5 4区 综合性期刊
Journal of Radiation Research and Applied Sciences Pub Date : 2025-09-13 DOI: 10.1016/j.jrras.2025.101945
Najwan Alsadat
{"title":"The improved estimates of population proportion using auxiliary attributes: Application in radiation science","authors":"Najwan Alsadat","doi":"10.1016/j.jrras.2025.101945","DOIUrl":"10.1016/j.jrras.2025.101945","url":null,"abstract":"<div><div>The estimation of population proportions plays an important role in the scientific work, especially in radiation science, where evaluations are frequently implemented as estimate of the frequency of outcomes. This article presents new improved class of estimators of population proportion estimation under simple random sampling. The suggested class supports a diverse variety of estimators all of which can be customized to various data structures and situations, which leads to greater flexibility and precision. To gain some analytical understanding of estimator performance we find expressions for the bias and mean squared error up-to the first order of approximation. The radiation datasets and a simulation study used to assess the estimators efficiency. The MSE criterion is used to determine a comparative analysis with conventional and preliminary estimators. The results show that the recommended estimators have minimum values of MSE which means they are more efficient. This work also reveals the best conditions within which the estimators can work most efficiently as they produce the least MSE. In general this study provides a flexible estimation procedure at a more dependable base of estimating proportions in complicated sampling strategies. The generalized estimators have a great vision of being used in radiation science, and it plays a pivotal role in estimation of important health and exposure parameters like epidemiological hazardous verses, assessment of risks, and policies.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 4","pages":"Article 101945"},"PeriodicalIF":2.5,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信