Journal of Radiation Research and Applied Sciences最新文献

{"title":"A new probabilistic model with mathematical properties and theoretical foundation: Its applications in healthcare and radiation sciences","authors":"Youzeng Wang ,&nbsp;Haimei Wang ,&nbsp;Ramadan A. ZeinEldin ,&nbsp;Alaa A. ELnazer ,&nbsp;Rahmtalla Y. Yagoub ,&nbsp;Mahmoud Elsehetry","doi":"10.1016/j.jrras.2025.102108","DOIUrl":"10.1016/j.jrras.2025.102108","url":null,"abstract":"<div><div>In this paper, we present a new extension of the power XLindley distribution (PXLD), an original modification of the PXLD. The new suggested model is called the truncated Cauchy power-power XLindley distribution (TCPPXLD). This distribution preserves the structure of PXLD while increasing flexibility while providing more flexibility and accuracy when modeling data. The TCPPXLD has numerous statistical features, including right-skewed, decreased, and unimodal probability density functions, quantile function, skewness, kurtosis, moments theoretically and numerically, moment generating function, characteristic function and order statistics. We illustrate the TCPPXLD’s effectiveness and dependability using the maximum likelihood standard parameter estimate technique and a complete simulation study. Furthermore, the use of TCPPXLD in two real-world healthcare/radiation datasets demonstrates its utility.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102108"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787135","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}

{"title":"Concentration dependent gamma degradation of inulin in aqueous phase and its impact on antioxidant capacity and probiotic fermentability","authors":"Sudesh ,&nbsp;Sahayog N. Jamdar","doi":"10.1016/j.jrras.2025.102131","DOIUrl":"10.1016/j.jrras.2025.102131","url":null,"abstract":"<div><div>Inulin is a water soluble, non-digestible polysaccharide with diverse food and clinical applications depending on its degree of polymerization. This study investigated the effect of inulin concentration on its gamma-induced depolymerization in aqueous phase by analysing changes in relative viscosity (<em>η</em>_<em>r</em>), solubility (%), total reducing sugar (TRS), free fructose (<em>F</em>_<em>f</em>) content, and •OH radical scavenging activity. The extent of inulin degradation in aqueous solution was influenced by both irradiation dose and sample concentration. Degradation increased with irradiation dose, while concentration and degree of degradation were in inverse relationship. The level of degradation as a result of molecular fragmentation was confirmed by thin layer chromatography (TLC) and gel permeation chromatography (GPC). FT-IR spectral characterization of unirradiated and irradiated samples revealed no significant changes in peak profiles. Furthermore, concentration-dependent degradation was evaluated for its impact on antioxidant capacity and probiotic fermentability. Inulin irradiated at lower concentrations exhibited significantly higher (<em>p &lt; 0.05</em>) ABTS and DPPH radical scavenging activity and probiotic fermentability than samples irradiated at higher concentrations; specifically, at 25 kGy, inulin irradiated in a 5 % (w/v) aqueous system showed ∼3.5-fold higher antioxidant activity and a ∼2.5-log increase in probiotic fermentability compared to the 60 % (w/v) system.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102131"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787241","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}

{"title":"Bufalin inhibits the osteogenic differentiation of renal interstitial fibroblasts through the OCT4/BMP2/Smads signaling axis","authors":"Xin Lian,&nbsp;Jiafeng Ding,&nbsp;Ting Chen,&nbsp;Xiaofen Wu","doi":"10.1016/j.jrras.2025.102139","DOIUrl":"10.1016/j.jrras.2025.102139","url":null,"abstract":"<div><h3>Background</h3><div>This study aimed to investigate the role of bufalin in inhibiting the osteogenic differentiation of human renal interstitial fibroblasts (hRIFs) and explore its potential mechanism through the OCT4/BMP2/Smads signaling axis.</div></div><div><h3>Methods</h3><div>Osteogenic differentiation of hRIFs was induced via osteogenic medium (OM), and this osteogenic differentiation was evaluated via alizarin red staining for calcium nodule formation, cobalt chloride staining for alkaline phosphatase activity, and Western blotting (WB) analysis for the expression of key osteogenic protein. Then, differentiated osteoblasts were treated with various concentrations of bufalin, and cell viability was assessed via the MTT assay to determine the optimal concentration. To investigate whether the inhibitory effect of bufalin on osteogenic differentiation involves the OCT4/BMP2/Smads signaling pathway, Western blot analysis, OCT4 overexpression, and BMP2-targeting short hairpin RNA (sh-BMP2) were used.</div></div><div><h3>Results</h3><div>OM successfully induced osteogenic differentiation in hRIFs and this differentiation was inhibited by bufalin. Mechanistically, bufalin suppressed OCT4 expression and consequently inhibited BMP2/Smads pathway activation. Notably, OCT4 upregulation reversed the inhibitory effects of bufalin on hRIF growth and osteoblast differentiation. Conversely, BMP2 downregulation counteracted the pro-osteogenic effects induced by OCT4 upregulation in bufalin-treated cells.</div></div><div><h3>Conclusion</h3><div>Bufalin inhibits the osteogenic differentiation in hRIFs, via a mechanism involving the downregulation the OCT4/BMP2/Smads pathway. These findings reveal that bufalin plays an important regulatory role in the osteogenic differentiation of hRIFs, which may provide a theoretical foundation for future research into the treatment of Randall's plaque formation.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102139"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837333","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}

{"title":"Sheltering management to protect the population: A case study of radiological impact assessment under a postulated accident condition in Indonesia's first NPP site","authors":"Yarianto Sugeng Budi Susilo ,&nbsp;Muhammad Budi Setiawan ,&nbsp;Jaja Sukmana ,&nbsp;Anik Purwaningsih ,&nbsp;Khusnul Khotimah ,&nbsp;Djarot Sulistio Wisnubroto ,&nbsp;Mohammad Dhandhang Purwadi ,&nbsp;Anis Rohanda ,&nbsp;Hery Adrial ,&nbsp;Heni Susiati ,&nbsp;Erlan Dewita ,&nbsp;Totti Tjiptosumirat ,&nbsp;Ferly Hermana ,&nbsp;Wahyu Retno Prihatiningsih ,&nbsp;Murdahayu Makmur ,&nbsp;June Mellawati ,&nbsp;Sunarko Sunarko ,&nbsp;Suparman Suparman ,&nbsp;Roziq Himawan ,&nbsp;Dede Sutarya","doi":"10.1016/j.jrras.2025.102125","DOIUrl":"10.1016/j.jrras.2025.102125","url":null,"abstract":"<div><div>Indonesia is committed to achieving net zero greenhouse gas emissions by 2060. To meet this objective, a diversified energy strategy is needed, which includes the deployment of nuclear power plants in addition to other renewable energy sources. It is planned that the first NPP in Indonesia will be introduced in 2032 or no later than 2034, with a target of approximately 31 GWe by 2060. To meet this demand, various reactor types will be considered based on geographical and demographic conditions, including Small Modular Reactors (SMRs). One potential site, Pantai Gosong in West Kalimantan, is currently under evaluation. An important aspect of site evaluation is the radiological safety assessment for accident conditions. The assessment includes the air concentration and ground deposition of several isotopes, individual effective doses, and early countermeasures. Site-specific meteorological data, were taken from the relevant national agencies. This study focuses on assessing radiation doses and formulating early countermeasure strategies, specifically for shelter management, in response to a hypothetical accident involving an SMR at the site, based on two potential release scenarios. Simulations were conducted using PC-Cosyma code. The sheltering pattern generated by the PC Cosyma is displayed using GIS and combined with settlement area, existing buildings suifigura for shelter, and the road network. Simulation results show that the calculated individual effective doses to the public remain well below reference levels. Nevertheless, a cautious approach to early countermeasures must be applied by implementing sheltering within a specific radius. This strategy aims to reduce the risk of radiation exposure while also preparing for potential subsequent actions, such as evacuation or the distribution of stable iodine (KI) tablets, if necessary. Proposed special protection zones within a 2 km radius can be established for immediate response measures. The existing public facilities are adequate to shelter the population within a 2 km radius. However, the presence of arterial roads within this area poses a potential risk of radiation exposure. Thus, alternative routes outside the 2 km radius should be suggested to enable effective traffic management in the event of an emergency.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102125"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837335","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}

{"title":"Evaluation of physicochemical properties, antioxidant capacity, and antiproliferative activity against human cancer cell lines of ethanolic extract of irradiated Sonchus arvensis","authors":"Hendig Winarno ,&nbsp;Susanto Susanto ,&nbsp;Ermin Katrin Winarno ,&nbsp;Idrus Kadir ,&nbsp;Ashri Mukti Benita ,&nbsp;Henni Widyastuti ,&nbsp;Indra Mustika Pratama ,&nbsp;Deudeu Lasmawati ,&nbsp;Muhammad Hanafi ,&nbsp;Nina Artanti ,&nbsp;Rahayu Puspitasari","doi":"10.1016/j.jrras.2025.102152","DOIUrl":"10.1016/j.jrras.2025.102152","url":null,"abstract":"<div><div>Perennial sowthistle (<em>Sonchus arvensis</em> L.) is a medicinal plant recognized for its therapeutic potential, including antiinflammatory, antioxidant, antimicrobial, and anticancer properties. This study evaluated the effects of gamma irradiation on the ethanolic extract of <em>S. arvensis</em> leaves (SAL-EE) by assessing its physicochemical characteristics and biological activities. The SAL-EE was irradiated at the doses of 5, 7.5, 10, and 12.5 kGy, and both control (SAL-EE) and irradiated extracts were examined for total aerobic plate count (TAPC), total yeast-mold count (TYMC), total phenolic content (TPC), total flavonoid content (TFC), antioxidant capacity, LC-HRMS total ion chromatogram (TIC), and <em>in vitro</em> antiproliferative activity against MCF7 (breast) and A549 (lung) cancer cells, and normal Vero cells. Gamma irradiation (5–12.5 kGy) effectively reduced microbial contamination, decreasing TAPC by 1–3 log cycles and TYMC by 1–4 log cycles. The TPC of irradiated extracts increased with dose, except at 5 kGy, while TFC showed a decreasing trend. Both control and irradiated extracts exhibited potent antiproliferative activity (IC₅₀ &lt; 20 μg/mL) toward both cancer cells, showing greater selectivity against A549 cells. No significant difference (<em>p</em> &gt; 0.05) was observed in MCF7 activity between irradiated and control extracts, but doses ≥10 kGy significantly reduced activity toward A549 cells. All extracts demonstrated high selectivity (SI &gt; 3), indicating preferential toxicity toward cancer cells. Antioxidant capacity correlated positively with TPC and negatively with TFC. LC–HRMS analysis identified several phenolic and flavonoid compounds, including NP-003294, 4-hydroxycoumarin, umbelliferone, 5-pentylresorcinol, apigenin, and kaempferol, which relatively remained stable after irradiation, while 1,3,6-trihydroxy-2,4-bis(3-methyl-2-buten-1-yl)-9H-xanthen-9-one was detected only in the extract irradiated at 5 kGy. The findings indicate that moderate irradiation (7.5–10 kGy) ensures microbial safety while preserving key bioactive constituents of <em>S. arvensis</em> ethanolic extract.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102152"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077269","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}

{"title":"A new Log-Lévy distribution with exponent parameter: Theory, properties, and utilization in the fields of accounting and radiation industries","authors":"Wenfei Huo ,&nbsp;Zhaozhen Zhu ,&nbsp;Zahrah Fayez Althobaiti ,&nbsp;Aminu Suleiman Mohammed ,&nbsp;Hassan M. Aljohani ,&nbsp;Alaa A. Elnazer","doi":"10.1016/j.jrras.2026.102168","DOIUrl":"10.1016/j.jrras.2026.102168","url":null,"abstract":"<div><div>Establishing the proper distributional assumptions of the data sets is necessary for parametric statistical conclusions and data set modelling. Therefore, the unpredictability and intricate patterns present in radiation data, especially lifetime data, are frequently difficult for classical probability models to reflect. The modelling of environmental pollutants in environmental science, the modelling of post-operative patient survival durations in medical science, and the modelling of software failure rates in computer science are just a few of the fields of study where statistical distributions are valuable. However, there are different levels of skewness and kurtosis in the data generation process. Additionally, non-monotonic failure rates, including bathtub, unimodal, or modified unimodal failure rates, could be present in the data. Therefore, using the current classical distributions to model the data does not yield an acceptable parametric fit and is frequently an estimate rather than a reality. The Log-Lévy distribution is presented as a solution to these constraints. More versatility is provided by this new model, which may depict a range of data features, including symmetric and skewed distributions, as well as various hazard rate patterns, including decreasing, increasing, and upside-down bathtub trends. Because of these characteristics, the Log-Lévy model can be used for statistical analysis in engineering and biological applications. The Log-Lévy distribution's moments, moment-generating function, entropy measures, quantile function, and order statistics are among the important characteristics that are derived in this study. The Log-Lévy model continuously obtains the lowest values for AIC, BIC, HQIC, and CAIC for some data sets, demonstrating its ideal trade-off between model complexity and goodness of fit. Further supporting the Log-Lévy model's resilience in capturing underlying data distributions is the fact that its Log-likelihood values are higher than those of the comparable model.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102168"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077268","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}

{"title":"Impact of nurse-led comprehensive care on compliance, image quality, and family satisfaction during pediatric MRI sedation: A retrospective study","authors":"Kaikai Qiu,&nbsp;Qian Jing,&nbsp;Yuan Yuan,&nbsp;Lihong Zhao","doi":"10.1016/j.jrras.2026.102202","DOIUrl":"10.1016/j.jrras.2026.102202","url":null,"abstract":"<div><h3>Purpose</h3><div>This study aimed to evaluate the impact of nurse-led pediatric MRI sedation care on child compliance and family satisfaction during cranial MRI examinations.</div></div><div><h3>Methods</h3><div>A retrospective analysis was conducted on 275 children aged 1–3 years. Based on the different MRI sedation care methods, they were defined into a routine care group​ (n = 149), which received standard sedation care led by physicians or according to a protocol without a dedicated nursing role, and a nurse-led group​ (n = 126), which received comprehensive sedation care led by nurses before the MRI examination. Child compliance was assessed through sleep onset time, success rates of examination completion (first vs. second positioning), and image quality scores. Family satisfaction was measured using a Visual Analog Scale (VAS). Physiological stress (heart rate, systolic and diastolic blood pressure) and family negative emotional status (Self-Rating Anxiety Scale, SAS; Self-Rating Depression Scale, SDS) were evaluated before and after MRI. Adverse reactions were recorded within 24 h.</div></div><div><h3>Results</h3><div>Compared to the routine group, the nurse-led group had a higher proportion of children falling asleep within 20 min (84.92 % vs. 68.46 %, P = 0.001) and a higher first-positioning success rate (84.13 % vs. 68.46 %, P = 0.003). Image quality meeting the standard was higher in the nurse-led group (93.65 % vs. 82.55 %, P = 0.005). Family satisfaction was significantly higher (97.62 % vs. 87.92 %, P = 0.003). Post-examination physiological stress (HR: 108.49 vs. 109.76, P = 0.023; SBP: 85.62 vs. 87.53, P = 0.025; DBP: 55.53 vs. 56.94, P = 0.016) and negative emotional scores (SAS: 47.81 vs. 49.18, P = 0.015; SDS: 48.76 vs. 50.48, P = 0.005) were lower. The overall incidence of adverse reactions was lower (18.25 % vs. 30.2 %, P = 0.022).</div></div><div><h3>Conclusion</h3><div>Nurse-led pediatric MRI sedation care improves child compliance, image quality, family satisfaction, and reduces physiological stress and adverse reactions.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102202"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077364","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}

{"title":"Two and a half decades of radioactivity studies in Tanzania: A systematic review of progress and perspectives (2000–2025)","authors":"Amos Vincent Ntarisa ,&nbsp;Fanuel Josephat Ligate","doi":"10.1016/j.jrras.2026.102203","DOIUrl":"10.1016/j.jrras.2026.102203","url":null,"abstract":"<div><div>Radioactivity studies provide critical data for assessing natural radiation exposure to humans and the environment. In Tanzania, numerous investigations have been conducted to quantify natural radionuclides in building materials, soils, rocks, food and water in order to establish baseline levels and ensure radiological safety. This study presents a systematic review of 33 research articles on environmental radioactivity in Tanzania and their associated environmental implications. Relevant studies published in English between 2000 and September 2025 were identified through targeted searches of major databases, including Scopus, Web of Science, Google Scholar, ScienceDirect, PubMed and ResearchGate. The results indicate that activity concentrations of natural radionuclides vary widely among different environmental matrices, reflecting the combined influence of geological formations and human activities. Overall, the reviewed data suggest that natural radioactivity levels in Tanzania are generally comparable to global averages; however, several studies report clearly elevated activity concentrations and radiological hazard indices in specific regions and samples, particularly in rocks and soils from mining areas, indicating the presence of localized high-radiological-risk zones rather than uniform national comparability. Methodologically, all reviewed studies employed high-purity germanium (HPGe) detectors for gamma spectrometric analysis, ensuring high accuracy and reliability for gamma-emitting radionuclides; however, this approach limits the detection of alpha-emitting radionuclides such as ²¹⁰Po and ²¹⁰Pb. The lack of complementary techniques, including alpha spectrometry and liquid scintillation counting, therefore constrains a comprehensive assessment of radiological risk, highlighting the need for future studies incorporating advanced analytical methods and broader geographic coverage to achieve a more complete understanding of environmental radioactivity in Tanzania.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102203"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077838","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}

{"title":"Analysis of the combined effect of antidepressant therapy and psychological nursing on neurofunctional recovery in patients with major depressive disorder by MRI-based deep learning","authors":"Zuoyang Zhang ,&nbsp;Chengcheng Liang","doi":"10.1016/j.jrras.2026.102175","DOIUrl":"10.1016/j.jrras.2026.102175","url":null,"abstract":"<div><h3>Objective</h3><div>This study aimed to apply deep learning technology for classifying brain magnetic resonance imaging (MRI) features in patients with major depressive disorder (MDD) and evaluate the impact of psychological nursing interventions (including cognitive-behavioral techniques, supportive counseling, and mindfulness-based stress reduction) on treatment efficacy.</div></div><div><h3>Methods</h3><div>Eighty patients with MDD were randomly divided into the control group (routine antidepressant therapy) and the observation group (routine therapy combined with psychological nursing). Brain MRI images were collected, and a CapsNet model was used to segment and classify neural regions of interest. The CapsNet model was chosen for its capability to preserve spatial hierarchies and fine-grained features in MRI data, compared with common CNNs such as DenseNet and SimpleCNN. Classification accuracy, precision, and recall were analyzed. Neurological impairment and depression severity were assessed using the National Institute of Health Stroke Scale (NIHSS) and Hamilton Depression Scale (HAMD), respectively. Nursing satisfaction was also compared.</div></div><div><h3>Results</h3><div>The ResNet-based feature extraction network in the CapsNet model achieved superior performance in classifying brain MRI features associated with MDD-related neuroanatomical patterns within the patient cohort, with 92.5 % accuracy, 93.8 % precision, and 91.9 % recall, outperforming DenseNet and SimpleCNN. The model effectively segmented white and gray matter in MRI scans. The observation group exhibited significantly lower NIHSS and HAMD scores post-treatment compared to the control group (P &lt; 0.05; for HAMD, Cohen's ∗d∗ = 0.71). Nursing satisfaction was 94.6 % in the observation group versus 90.6 % in the control group, with a statistically significant difference (<em>P</em> &lt; 0.05).</div></div><div><h3>Conclusion</h3><div>Deep learning enables accurate extraction and classification of brain MRI features in MDD. Psychological nursing interventions combined with antidepressant therapy are associated with improvements in neurological recovery, reduction in MDD severity, and enhanced patient satisfaction, demonstrating significant clinical value.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102175"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077888","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}

{"title":"Integrating multivariate statistics and natural radioactivity for radiation hazard assessment in Abu-Tartur phosphate mine, Egypt","authors":"Hani Negm ,&nbsp;Meshal Alzaid ,&nbsp;M.A.M. Uosif ,&nbsp;Hayder Suhail Najm ,&nbsp;Reda Elsaman ,&nbsp;Atef El-Taher ,&nbsp;Mohamed Kamal ,&nbsp;El-Montser M. Seleem ,&nbsp;Gaber Mahmoud Saadawy ,&nbsp;Ahmed Ali Abdelrhman","doi":"10.1016/j.jrras.2026.102204","DOIUrl":"10.1016/j.jrras.2026.102204","url":null,"abstract":"<div><div>Natural radionuclides in sediments and ecosystems, influenced by local geology, can pose significant environmental and human health risks. This study provides a comprehensive radiological assessment of the Abu-Tartur phosphate mine in Egypt, integrating multivariate statistical analysis to elucidate the relationships between radioactivity and radiological parameters. Twenty phosphate deposit samples, categorized as non-oxidized (black rock) and oxidized (yellow rock), were analyzed using gamma-ray spectrometry to determine the activity concentrations of ²²⁶Ra, ²³²Th, and ⁴⁰K. The average activity concentrations were found to be 99.5 ± 4.92, 38.1 ± 1.93, and 28.5 ± 1.47 Bq kg⁻¹ for black rocks, and 125 ± 6.18, 47 ± 2.3, and 26 ± 1.37 Bq kg⁻¹ for yellow rocks, respectively. Notably, the ²²⁶Ra and ²³²Th activity concentrations in the phosphate samples are 2.5–3 and 1.3–1.6 times higher than the worldwide average, respectively. The mean absorbed dose rates in the black and yellow rock samples were 67.25 and 94.9 nGy h⁻¹, respectively, both exceeding the global average of 57 nGy h⁻¹. The calculated excess lifetime cancer risk (ELCR) for both oxidized and non-oxidized samples surpassed the permissible world norm of 0.290 × 10⁻³. Principal Component Analysis (PCA) revealed a strong positive correlation between ²²⁶Ra and ²³²Th with radiation hazard indices, while ⁴⁰K showed a negative correlation. These findings indicate a significant cancer risk associated with the ambient geology of the Abu-Tartur mining region and underscore the need for stringent radiation protection measures.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"19 1","pages":"Article 102204"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147394336","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}