Journal of Radiation Research and Applied Sciences最新文献_第9页

Analysis of tiny inflexible suspended particles and solar thermal radiation aspects during the wavy flows of magneto-Cross nanofluid

IF 1.7 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Journal of Radiation Research and Applied Sciences

Pub Date : 2025-01-15 DOI: 10.1016/j.jrras.2025.101297

Saleem Javed, Latif Ahmad

The periodic wavy motion of the generalized materials in the presence of spinning tiny inflexible suspended particles has a wide range of practical applications, i.e., the typical motion of lubricants, paints, blood, anisotropic fluids polymeric, etc. These fluids are the main examples of micro-polar materials. However, this work is a constructive approach for maximizing the heat transfer rate during the periodic motion of Cross liquid in combination with micropolar fluid. Furthermore, the same practical problem is formulated with solar thermal radiation, Brownian motion, thermophoretic force, Lorentz force, and gravity force. All the leading factors are examined for their significant inclusion while observing the novel behavior of the materials. The mathematical equations are then modeled in terms of dimensionless ordinary differential equations (ODEs). In particular, the material's speed, temperature, resistive forces, concentrations as well as flow of heat and mass transfer rates are graphically visualized. Vertical velocity components are uplifted for higher variations in the vortex viscosity factor as well as an opposite trend is noticed in the behavior of horizontal components of velocity. The findings highlight that higher vortex viscosity increases the vertical velocity components while reducing horizontal velocity, indicating directional flow influences. Thermal radiation and Brownian motion both elevate the temperature of the material during motion. Additionally, a higher vortex viscosity enhances resistive forces in the wavy flow, while an increase in the Weissenberg number reduces these forces. Brownian motion reduces the heat transfer rate, whereas the nanoparticle volume fraction shows the opposite behavior. The accuracy and authenticity of the approximated results are validated by providing a good agreement with the previous works and with the results obtained in the Richardson extrapolation.

{"title":"Analysis of tiny inflexible suspended particles and solar thermal radiation aspects during the wavy flows of magneto-Cross nanofluid","authors":"Saleem Javed, Latif Ahmad","doi":"10.1016/j.jrras.2025.101297","DOIUrl":"10.1016/j.jrras.2025.101297","url":null,"abstract":"<div><div>The periodic wavy motion of the generalized materials in the presence of spinning tiny inflexible suspended particles has a wide range of practical applications, i.e., the typical motion of lubricants, paints, blood, anisotropic fluids polymeric, etc. These fluids are the main examples of micro-polar materials. However, this work is a constructive approach for maximizing the heat transfer rate during the periodic motion of Cross liquid in combination with micropolar fluid. Furthermore, the same practical problem is formulated with solar thermal radiation, Brownian motion, thermophoretic force, Lorentz force, and gravity force. All the leading factors are examined for their significant inclusion while observing the novel behavior of the materials. The mathematical equations are then modeled in terms of dimensionless ordinary differential equations (ODEs). In particular, the material's speed, temperature, resistive forces, concentrations as well as flow of heat and mass transfer rates are graphically visualized. Vertical velocity components are uplifted for higher variations in the vortex viscosity factor as well as an opposite trend is noticed in the behavior of horizontal components of velocity. The findings highlight that higher vortex viscosity increases the vertical velocity components while reducing horizontal velocity, indicating directional flow influences. Thermal radiation and Brownian motion both elevate the temperature of the material during motion. Additionally, a higher vortex viscosity enhances resistive forces in the wavy flow, while an increase in the Weissenberg number reduces these forces. Brownian motion reduces the heat transfer rate, whereas the nanoparticle volume fraction shows the opposite behavior. The accuracy and authenticity of the approximated results are validated by providing a good agreement with the previous works and with the results obtained in the Richardson extrapolation.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 1","pages":"Article 101297"},"PeriodicalIF":1.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143104398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermophoretic particle deposition in bioconvection flow of nanofluid with microorganisms and heat source: Applications of nanoparticle and thermal radiation

IF 1.7 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Journal of Radiation Research and Applied Sciences

Pub Date : 2025-01-15 DOI: 10.1016/j.jrras.2025.101305

Muhammad Azhar Iqbal , Nargis Khan , A.H. Alzahrani , Y. Khan

This research examines the flow of thermally radiative bioconvective nanofluid

(T i O_{2} / W a t e r)

with microbes and thermophoretic particle deposition over a sheet, incorporating a non-uniform heat source. There are many important uses for studying the behavior of thermophoretic particle deposition in the bioconvective flow of nanofluids containing microorganisms. It helps to improve nanotechnology-based procedures where exact control over nanoparticle deposition is essential, including tailored drug delivery. Energy systems, environmental biotechnology, and biomedical engineering can all benefit from this model since it improves our comprehension of how nanoparticles behave in the presence of heat and microbes. It also encourages improvements in the control of thermal radiation, which raises the effectiveness of solar energy devices and cooling systems. Based on non-uniform heat source, electrophoretic and thermophoretic particle deposition, the present work investigates momentum, concentration, temperature flow, and microorganism distributions. Using suitable similarity variables, all equations to the proposed flow are converted into the ODEs. The reduced equations are evaluated using the RKF-4th 5th method. The properties of significant parameters on velocity, energy, solutal and microbiological profiles are determined with the support of graphs. The thermal distribution performs better with an increase in the thermal radiation. A contrary behavior is observed on the concentration profile when the values of electrophoretic and thermophoretic parameters increase. This study enhances knowledge across disciplines including healthcare diagnostics, chemical engineering, and ecological restoration by offering fresh perspectives on the dynamics of fluid movement and the transportation of particles.

{"title":"Thermophoretic particle deposition in bioconvection flow of nanofluid with microorganisms and heat source: Applications of nanoparticle and thermal radiation","authors":"Muhammad Azhar Iqbal , Nargis Khan , A.H. Alzahrani , Y. Khan","doi":"10.1016/j.jrras.2025.101305","DOIUrl":"10.1016/j.jrras.2025.101305","url":null,"abstract":"<div><div>This research examines the flow of thermally radiative bioconvective nanofluid <span><math><mrow><mo>(</mo><mrow><mi>T</mi><mi>i</mi><msub><mi>O</mi><mn>2</mn></msub><mo>/</mo><mi>W</mi><mi>a</mi><mi>t</mi><mi>e</mi><mi>r</mi></mrow><mo>)</mo></mrow></math></span> with microbes and thermophoretic particle deposition over a sheet, incorporating a non-uniform heat source. There are many important uses for studying the behavior of thermophoretic particle deposition in the bioconvective flow of nanofluids containing microorganisms. It helps to improve nanotechnology-based procedures where exact control over nanoparticle deposition is essential, including tailored drug delivery. Energy systems, environmental biotechnology, and biomedical engineering can all benefit from this model since it improves our comprehension of how nanoparticles behave in the presence of heat and microbes. It also encourages improvements in the control of thermal radiation, which raises the effectiveness of solar energy devices and cooling systems. Based on non-uniform heat source, electrophoretic and thermophoretic particle deposition, the present work investigates momentum, concentration, temperature flow, and microorganism distributions. Using suitable similarity variables, all equations to the proposed flow are converted into the ODEs. The reduced equations are evaluated using the RKF-4th 5th method. The properties of significant parameters on velocity, energy, solutal and microbiological profiles are determined with the support of graphs. The thermal distribution performs better with an increase in the thermal radiation. A contrary behavior is observed on the concentration profile when the values of electrophoretic and thermophoretic parameters increase. This study enhances knowledge across disciplines including healthcare diagnostics, chemical engineering, and ecological restoration by offering fresh perspectives on the dynamics of fluid movement and the transportation of particles.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 1","pages":"Article 101305"},"PeriodicalIF":1.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics of chemical reactive on magneto Hybrid Nanomaterial with heat radiation due to porous exponential plate: Laplace transform technique for the heat and mass

IF 1.7 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Journal of Radiation Research and Applied Sciences

Pub Date : 2025-01-15 DOI: 10.1016/j.jrras.2025.101295

Nehad Ali Shah , Farhan Ali , Se-Jin Yook , M. Faizan , S.S. Zafar , Maawiya Ould Sidi

Among the most promising substitutes for conventional methods of heat transmission via fluids with sources of alternative energy include hybrid nanofluids, which can attain very high thermal conductivity. The idea of the current study is to discuss the unsteady incompressible flow in porous media affects the magnetized electrically induced of hybrid nanofluid with heat and mass transfer across stretching sheet. The flow is considered along an accelerated exponential sheet. Thermal radiation, heat source and chemical reaction are considered for the computation of heat and mass. Moreover, hybrid nanofluid is the mixture of base fluid such as Carboxymethyl cellulose water (CMC-water) with multi wall carbon nanotube (

M W C N T

) and molybdenum disulfide (

M o S_{2}

) nanoparticles are employed according to their physical characteristics. To deal with the consequent partial differential equations that govern the flow, the Laplace-Transform approach was used via MATHEMATICA software. The effects on the numerous flow characteristics upon the hybrid nanofluid's concentration, temperature field, velocity are calculated against each other in a graphical format in the discussion section. The drag friction, rate of heat and mass are being computed in Tabular form. Higher estimates of the magnetic field parameter can decrease the fluid's velocity, but an increase in the time for the hybrid nanofluid and nanofluid. When the thermal radiation, heat source intensifies the fluid's temperature enhances proportionally. Based on the current investigation, we have determined that hybrid nanofluids produce better outcomes than unitary nanofluids.

{"title":"Dynamics of chemical reactive on magneto Hybrid Nanomaterial with heat radiation due to porous exponential plate: Laplace transform technique for the heat and mass","authors":"Nehad Ali Shah , Farhan Ali , Se-Jin Yook , M. Faizan , S.S. Zafar , Maawiya Ould Sidi","doi":"10.1016/j.jrras.2025.101295","DOIUrl":"10.1016/j.jrras.2025.101295","url":null,"abstract":"<div><div>Among the most promising substitutes for conventional methods of heat transmission via fluids with sources of alternative energy include hybrid nanofluids, which can attain very high thermal conductivity. The idea of the current study is to discuss the unsteady incompressible flow in porous media affects the magnetized electrically induced of hybrid nanofluid with heat and mass transfer across stretching sheet. The flow is considered along an accelerated exponential sheet. Thermal radiation, heat source and chemical reaction are considered for the computation of heat and mass. Moreover, hybrid nanofluid is the mixture of base fluid such as Carboxymethyl cellulose water (CMC-water) with multi wall carbon nanotube (<span><math><mrow><mi>M</mi><mi>W</mi><mi>C</mi><mi>N</mi><mi>T</mi></mrow></math></span>) and molybdenum disulfide (<span><math><mrow><mi>M</mi><mi>o</mi><msub><mi>S</mi><mn>2</mn></msub></mrow></math></span>) nanoparticles are employed according to their physical characteristics. To deal with the consequent partial differential equations that govern the flow, the Laplace-Transform approach was used via MATHEMATICA software. The effects on the numerous flow characteristics upon the hybrid nanofluid's concentration, temperature field, velocity are calculated against each other in a graphical format in the discussion section. The drag friction, rate of heat and mass are being computed in Tabular form. Higher estimates of the magnetic field parameter can decrease the fluid's velocity, but an increase in the time for the hybrid nanofluid and nanofluid. When the thermal radiation, heat source intensifies the fluid's temperature enhances proportionally. Based on the current investigation, we have determined that hybrid nanofluids produce better outcomes than unitary nanofluids.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 1","pages":"Article 101295"},"PeriodicalIF":1.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lifetime attributable risk of radiation exposure from cardiac and parathyroid SPECT/CT scan

IF 1.7 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Journal of Radiation Research and Applied Sciences

Pub Date : 2025-01-14 DOI: 10.1016/j.jrras.2025.101303

Abdullah Fahad A. Alshamrani, Faisal A. Alrehily

Introduction

Single-photon emission computed tomography (SPECT) and computed tomography (CT) cardiac and parathyroid examinations play crucial roles in diagnosing and managing cardiovascular and endocrine disorders. However, concerns exist regarding the patient radiation exposure associated with their use. This study aimed to assess the risk of developing cancer from cardiac and parathyroid SPECT/CT examinations by estimating cancer risk in patients who underwent these procedures.

Methods

Data were collected from patients who underwent cardiac or parathyroid scans at a hospital in Madinah, Saudi Arabia. The lifetime attributable risk (LAR) was calculated using the United States National Research Council Committee to Assess Health Risks from Exposure to Low Levels of Ionizing Radiation VII approach. The absorbed doses from the SPECT and CT scans were calculated using the National Cancer Institute software.

Results

Seventy patients underwent cardiac and parathyroid SPECT/CT examinations. For cardiac SPECT/CT scans, cancer risk was generally minimal. However, in males under 50, ^99mTc-MIBI Sestamibi contributed to a significant colon cancer risk (12 cases per 100,000 people). In parathyroid examinations, the risk was notably higher. For males, colon cancer risk was substantial (24 cases per 100,000 people), while females faced increased risks of lung (29 cases per 100,000 people) and breast cancer (16 cases per 100,000 people). Both radiopharmaceuticals and CT scans contributed to the higher cancer risks associated with parathyroid examinations than cardiac SPECT/CT scans.

Conclusion

The cancer risk associated with cardiac and parathyroid SPECT/CT examinations was relatively low. These findings can contribute to optimizing imaging protocols, radiation dose reduction strategies, and patient counseling regarding the benefits and risks of these imaging procedures.

{"title":"Lifetime attributable risk of radiation exposure from cardiac and parathyroid SPECT/CT scan","authors":"Abdullah Fahad A. Alshamrani, Faisal A. Alrehily","doi":"10.1016/j.jrras.2025.101303","DOIUrl":"10.1016/j.jrras.2025.101303","url":null,"abstract":"<div><h3>Introduction</h3><div>Single-photon emission computed tomography (SPECT) and computed tomography (CT) cardiac and parathyroid examinations play crucial roles in diagnosing and managing cardiovascular and endocrine disorders. However, concerns exist regarding the patient radiation exposure associated with their use. This study aimed to assess the risk of developing cancer from cardiac and parathyroid SPECT/CT examinations by estimating cancer risk in patients who underwent these procedures.</div></div><div><h3>Methods</h3><div>Data were collected from patients who underwent cardiac or parathyroid scans at a hospital in Madinah, Saudi Arabia. The lifetime attributable risk (LAR) was calculated using the United States National Research Council Committee to Assess Health Risks from Exposure to Low Levels of Ionizing Radiation VII approach. The absorbed doses from the SPECT and CT scans were calculated using the National Cancer Institute software.</div></div><div><h3>Results</h3><div>Seventy patients underwent cardiac and parathyroid SPECT/CT examinations. For cardiac SPECT/CT scans, cancer risk was generally minimal. However, in males under 50, <sup>99m</sup>Tc-MIBI Sestamibi contributed to a significant colon cancer risk (12 cases per 100,000 people). In parathyroid examinations, the risk was notably higher. For males, colon cancer risk was substantial (24 cases per 100,000 people), while females faced increased risks of lung (29 cases per 100,000 people) and breast cancer (16 cases per 100,000 people). Both radiopharmaceuticals and CT scans contributed to the higher cancer risks associated with parathyroid examinations than cardiac SPECT/CT scans.</div></div><div><h3>Conclusion</h3><div>The cancer risk associated with cardiac and parathyroid SPECT/CT examinations was relatively low. These findings can contribute to optimizing imaging protocols, radiation dose reduction strategies, and patient counseling regarding the benefits and risks of these imaging procedures.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 1","pages":"Article 101303"},"PeriodicalIF":1.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143094898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal augmentation in Darcy Forchheimer media flow using Extended Tiwari-Das model: Solar radiation aspects

IF 1.7 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Journal of Radiation Research and Applied Sciences

Pub Date : 2025-01-14 DOI: 10.1016/j.jrras.2025.101298

Adnan , Aneesa Nadeem , Sami Ullah Khan , Muhammad Bilal , Taoufik Saidani , Wasim Jamshed

Investigation of thermal augmentation in industries is very significant to accomplish the production of many products. Hence, thermal analysis in ternary unsteady nanofluid flow inside a channel is conducted under pertinent physical controls. The fourth ternary nanofluid model is acquired using the similarity rules and then graphical results are demonstrated for hybrid and ternary nanofluids for inward and outward plate situation. Indepth investigation of the results revealed that Darcy and Forchheimer effects highly opposes the movement while it drops rapidly for ternary case due to high resistive forces. Inclusion of thermal radiations and heat dissipation augmented the performance of nano, hybrid and ternary nanoliquids; while, high thermal transport is noticed for ternary nanoliquid case because of excellent thermal conductivity. Further, increase in squeezed number caused insignificant contribution in the temperature distribution.

引用次数: 0

Use of machine learning algorithms and NMR metabolomics to identify potential serum biomarkers in patients with amnestic mild cognitive impairment

IF 1.7 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Journal of Radiation Research and Applied Sciences

Pub Date : 2025-01-13 DOI: 10.1016/j.jrras.2024.101278

Jin Chen , Feilinyan Wan , Jiayu Qiu , Xiuyuan Ji , Ziqiang Liu , Jinhua Wang , Yubao Liu , Zhongxian Yang

Objective

To identify potential serum biomarkers in patients with amnestic mild cognitive impairment (aMCI) using machine learning algorithms and nuclear magnetic resonance (NMR) metabolomics.

Methods

Seventy-four serum samples from 33 patients diagnosed with aMCI and 41 age-, sex-, and education-matched elderly controls (ECs) were subjected to analysis using a Bruker 850 MHz superconducting NMR instrument. We employed a multivariate analysis approach to identify the serum metabolic characteristics that distinguished patients with aMCI from ECs. Two machine learning (ML) algorithms, decision tree and random forest, were then employed to assess the discriminatory power of the resulting biomarker panel.

Results

Eighteen differential metabolites were identified by orthogonal partial least squares-discriminant analysis. Then, utilizing the LASSO regression algorithm, nine potential metabolic markers were selected for distinguishing patients with aMCI from the EC group. Based on this biomarker panel, the prediction models constructed using random forest discriminated aMCI from EC with a sensitivity of 0.912, specificity of 0.947, and an area under the receiver operating characteristic curve (AUC) value of 1.00. The decision tree model had a sensitivity of 0.958, specificity of 1.00, and AUC value of 0.979.

Conclusions

This study identified a panel of nine metabolites and could be used as potential biomarkers for aMCI. ML algorithms combined with NMR-based metabolomics can effectively provide valuable molecular-level metabolic information for the assessment of the early stages of Alzheimer's disease.

{"title":"Use of machine learning algorithms and NMR metabolomics to identify potential serum biomarkers in patients with amnestic mild cognitive impairment","authors":"Jin Chen , Feilinyan Wan , Jiayu Qiu , Xiuyuan Ji , Ziqiang Liu , Jinhua Wang , Yubao Liu , Zhongxian Yang","doi":"10.1016/j.jrras.2024.101278","DOIUrl":"10.1016/j.jrras.2024.101278","url":null,"abstract":"<div><h3>Objective</h3><div>To identify potential serum biomarkers in patients with amnestic mild cognitive impairment (aMCI) using machine learning algorithms and nuclear magnetic resonance (NMR) metabolomics.</div></div><div><h3>Methods</h3><div>Seventy-four serum samples from 33 patients diagnosed with aMCI and 41 age-, sex-, and education-matched elderly controls (ECs) were subjected to analysis using a Bruker 850 MHz superconducting NMR instrument. We employed a multivariate analysis approach to identify the serum metabolic characteristics that distinguished patients with aMCI from ECs. Two machine learning (ML) algorithms, decision tree and random forest, were then employed to assess the discriminatory power of the resulting biomarker panel.</div></div><div><h3>Results</h3><div>Eighteen differential metabolites were identified by orthogonal partial least squares-discriminant analysis. Then, utilizing the LASSO regression algorithm, nine potential metabolic markers were selected for distinguishing patients with aMCI from the EC group. Based on this biomarker panel, the prediction models constructed using random forest discriminated aMCI from EC with a sensitivity of 0.912, specificity of 0.947, and an area under the receiver operating characteristic curve (AUC) value of 1.00. The decision tree model had a sensitivity of 0.958, specificity of 1.00, and AUC value of 0.979.</div></div><div><h3>Conclusions</h3><div>This study identified a panel of nine metabolites and could be used as potential biomarkers for aMCI. ML algorithms combined with NMR-based metabolomics can effectively provide valuable molecular-level metabolic information for the assessment of the early stages of Alzheimer's disease.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 1","pages":"Article 101278"},"PeriodicalIF":1.7,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143094970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal radiation of Walter-B magneto bioconvection nanofluid due to the stretching surface under convective condition and heat source/sink: A semi-analytical technique for the stagnation point

IF 1.7 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Journal of Radiation Research and Applied Sciences

Pub Date : 2025-01-13 DOI: 10.1016/j.jrras.2025.101291

M. Faizan Ahmed , A. Zaib , Farhan Ali , Umair Khan , Syed Sohaib Zafar

This paper investigates the characteristics of convective magnetized flow towards stagnant point across stretchable sheet. The governing equation of the Walter-B fluid model described the rheology of fluid. Buongiorno's theory is examined to elucidate the consequence of Brownian movement along the thermophoretic effect, and motile microorganisms are used to enhance the strength of nanomaterial. The nonlinear flow of fluid PDEs is transmitted into ODEs through suitable transmission. The converted model equations are tackled through a Homotopic approach The physical quantities like motile density profile, thermal field, velocity, drag friction, Nusselt number, Sherwood number, concentration of nanoparticles and motile microbes are displayed in graphical and tabular form. It is observed that enhancing the fluid parameter mounts the velocity field and drag friction. The heat source/sink, Brownian motion, Biot number, and radiation parameter lead to enhancement in the thermal field while decay in the Prandtl number. The concentration of nanoparticles reduces with greater Scimdth and chemical reaction but increases with thermophoretic number. The motile density field reduces as the Bioconvection Lewis number increases. Moreover, compared with previous published results and achieved an outstanding agreement.

{"title":"Thermal radiation of Walter-B magneto bioconvection nanofluid due to the stretching surface under convective condition and heat source/sink: A semi-analytical technique for the stagnation point","authors":"M. Faizan Ahmed , A. Zaib , Farhan Ali , Umair Khan , Syed Sohaib Zafar","doi":"10.1016/j.jrras.2025.101291","DOIUrl":"10.1016/j.jrras.2025.101291","url":null,"abstract":"<div><div>This paper investigates the characteristics of convective magnetized flow towards stagnant point across stretchable sheet. The governing equation of the Walter-B fluid model described the rheology of fluid. Buongiorno's theory is examined to elucidate the consequence of Brownian movement along the thermophoretic effect, and motile microorganisms are used to enhance the strength of nanomaterial. The nonlinear flow of fluid PDEs is transmitted into ODEs through suitable transmission. The converted model equations are tackled through a Homotopic approach The physical quantities like motile density profile, thermal field, velocity, drag friction, Nusselt number, Sherwood number, concentration of nanoparticles and motile microbes are displayed in graphical and tabular form. It is observed that enhancing the fluid parameter mounts the velocity field and drag friction. The heat source/sink, Brownian motion, Biot number, and radiation parameter lead to enhancement in the thermal field while decay in the Prandtl number. The concentration of nanoparticles reduces with greater Scimdth and chemical reaction but increases with thermophoretic number. The motile density field reduces as the Bioconvection Lewis number increases. Moreover, compared with previous published results and achieved an outstanding agreement.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 1","pages":"Article 101291"},"PeriodicalIF":1.7,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143094855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative study on setup accuracy of marker-less surface-guided radiation therapy versus traditional skin marks in hypofractionated whole breast irradiation: A marker-free approach starting from CT simulation

IF 1.7 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Journal of Radiation Research and Applied Sciences

Pub Date : 2025-01-09 DOI: 10.1016/j.jrras.2025.101290

Yuri Jeong , Jung Hoon Kim , Jeong Geun Oh , Kang Kyoo Lee , Sun Rock Moon

Background and purpose

To evaluate the setup accuracy of surface-guided radiation therapy (SGRT) compared with traditional skin marks in patients undergoing hypofractionated whole breast irradiation, with a specific focus on our institution's practice of full eliminating skin marks from the computed tomography (CT) simulation.

Patients and methods

We retrospectively reviewed 184 breast cancer patients treated with hypofractionated whole breast irradiation between January 2022 and May 2023. Initial patient positioning was performed using either traditional skin marks (n = 93, 1488 sessions) or surface-guidance technology via AlignRT (n = 91, 1456 sessions). The setup accuracy was evaluated by analyzing translational couch shifts in vertical, longitudinal, and lateral directions through daily verification using orthogonal kV images in anterior-posterior and lateral directions obtained after initial positioning. The time from initial patient positioning to treatment was also compared.

Results

The average translational couch shifts after initial positioning with skin marks were 3.2 ± 1.8 mm, 3.3 ± 1.5 mm, and 2.8 ± 1.4 mm in the vertical, longitudinal, and lateral directions, respectively. For SGRT, the average translational couch shifts were 3.5 ± 1.5 mm, 3.3 ± 1.4 mm, and 2.8 ± 1.2 mm, respectively. There were no significant differences between SGRT and skin marks in any direction. The average time from initial patient positioning to treatment was shorter in patients with SGRT compared to those with skin marks, 261 s vs. 281 s.

Conclusions

The elimination of skin marks from the CT simulation stage, facilitated by SGRT, resulted in comparable setup accuracy with traditional skin marks. In addition, SGRT significantly reduced the time from initial patient positioning to treatment, suggesting that SGRT can be effectively used in hypofractionated whole breast irradiation without the need for skin marks, potentially enhancing patient comfort and convenience.

{"title":"Comparative study on setup accuracy of marker-less surface-guided radiation therapy versus traditional skin marks in hypofractionated whole breast irradiation: A marker-free approach starting from CT simulation","authors":"Yuri Jeong , Jung Hoon Kim , Jeong Geun Oh , Kang Kyoo Lee , Sun Rock Moon","doi":"10.1016/j.jrras.2025.101290","DOIUrl":"10.1016/j.jrras.2025.101290","url":null,"abstract":"<div><h3>Background and purpose</h3><div>To evaluate the setup accuracy of surface-guided radiation therapy (SGRT) compared with traditional skin marks in patients undergoing hypofractionated whole breast irradiation, with a specific focus on our institution's practice of full eliminating skin marks from the computed tomography (CT) simulation.</div></div><div><h3>Patients and methods</h3><div>We retrospectively reviewed 184 breast cancer patients treated with hypofractionated whole breast irradiation between January 2022 and May 2023. Initial patient positioning was performed using either traditional skin marks (n = 93, 1488 sessions) or surface-guidance technology via AlignRT (n = 91, 1456 sessions). The setup accuracy was evaluated by analyzing translational couch shifts in vertical, longitudinal, and lateral directions through daily verification using orthogonal kV images in anterior-posterior and lateral directions obtained after initial positioning. The time from initial patient positioning to treatment was also compared.</div></div><div><h3>Results</h3><div>The average translational couch shifts after initial positioning with skin marks were 3.2 ± 1.8 mm, 3.3 ± 1.5 mm, and 2.8 ± 1.4 mm in the vertical, longitudinal, and lateral directions, respectively. For SGRT, the average translational couch shifts were 3.5 ± 1.5 mm, 3.3 ± 1.4 mm, and 2.8 ± 1.2 mm, respectively. There were no significant differences between SGRT and skin marks in any direction. The average time from initial patient positioning to treatment was shorter in patients with SGRT compared to those with skin marks, 261 s vs. 281 s.</div></div><div><h3>Conclusions</h3><div>The elimination of skin marks from the CT simulation stage, facilitated by SGRT, resulted in comparable setup accuracy with traditional skin marks. In addition, SGRT significantly reduced the time from initial patient positioning to treatment, suggesting that SGRT can be effectively used in hypofractionated whole breast irradiation without the need for skin marks, potentially enhancing patient comfort and convenience.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 1","pages":"Article 101290"},"PeriodicalIF":1.7,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143094897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

NSEC-YOLO: Real-time lesion detection on chest X-ray with adaptive noise suppression and global perception aggregation

IF 1.7 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Journal of Radiation Research and Applied Sciences

Pub Date : 2025-01-07 DOI: 10.1016/j.jrras.2024.101281

XinYu Zhang , LiJun Liu , Xiaobing Yang , Li Liu , Wei Peng

Chest diseases significantly threaten respiratory health, making early and accurate diagnosis essential for improving patient survival rates. Traditional detection methods face difficulties in accurately identifying and localizing chest lesions, attributed to the intricate morphology of lung diseases and interference from background noise, subsequently elevating the risk of misdiagnosis. To address these challenges, we propose a novel method called NSEC-YOLO, which significantly enhances the efficiency and accuracy of chest disease detection. Firstly, we introduce an adaptive noise suppression module during the visual feature extraction stage, effectively reducing background noise interference and improving the clarity and precision of feature representation. Secondly, we employ a global perceptual aggregation detection head that strengthens the model’s performance in classification and regression tasks, thereby improving the accuracy and reliability of detection results. Finally, we incorporate a well-designed AccurEIOU-Loss to fine-tune the training process, thereby augmenting the detection accuracy and efficiency. To comprehensively validate the performance of NSEC-YOLO, extensive experiments were conducted on the public VinDr-CXR dataset and systematically compared it with popular detection models such as YOLO-v5, YOLO-v9, and SSD. The experimental findings indicate that NSEC-YOLO excels in detecting lung diseases in chest X-ray images, achieving a precision of 0.416 under the [email protected] standard and an accuracy of 0.194 under the more stringent [email protected]:0.95 standard. Notably, NSEC-YOLO maintains a high processing speed of 163 frames per second while delivering high detection accuracy, outperforming mainstream detection models in both precision and efficiency. These results underscore the strong application potential and practical value of NSEC-YOLO in real-time chest X-ray lesion detection.

{"title":"NSEC-YOLO: Real-time lesion detection on chest X-ray with adaptive noise suppression and global perception aggregation","authors":"XinYu Zhang , LiJun Liu , Xiaobing Yang , Li Liu , Wei Peng","doi":"10.1016/j.jrras.2024.101281","DOIUrl":"10.1016/j.jrras.2024.101281","url":null,"abstract":"<div><div>Chest diseases significantly threaten respiratory health, making early and accurate diagnosis essential for improving patient survival rates. Traditional detection methods face difficulties in accurately identifying and localizing chest lesions, attributed to the intricate morphology of lung diseases and interference from background noise, subsequently elevating the risk of misdiagnosis. To address these challenges, we propose a novel method called NSEC-YOLO, which significantly enhances the efficiency and accuracy of chest disease detection. Firstly, we introduce an adaptive noise suppression module during the visual feature extraction stage, effectively reducing background noise interference and improving the clarity and precision of feature representation. Secondly, we employ a global perceptual aggregation detection head that strengthens the model’s performance in classification and regression tasks, thereby improving the accuracy and reliability of detection results. Finally, we incorporate a well-designed AccurEIOU-Loss to fine-tune the training process, thereby augmenting the detection accuracy and efficiency. To comprehensively validate the performance of NSEC-YOLO, extensive experiments were conducted on the public VinDr-CXR dataset and systematically compared it with popular detection models such as YOLO-v5, YOLO-v9, and SSD. The experimental findings indicate that NSEC-YOLO excels in detecting lung diseases in chest X-ray images, achieving a precision of 0.416 under the [email protected] standard and an accuracy of 0.194 under the more stringent [email protected]:0.95 standard. Notably, NSEC-YOLO maintains a high processing speed of 163 frames per second while delivering high detection accuracy, outperforming mainstream detection models in both precision and efficiency. These results underscore the strong application potential and practical value of NSEC-YOLO in real-time chest X-ray lesion detection.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"18 1","pages":"Article 101281"},"PeriodicalIF":1.7,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143094896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling radiation and engineering data using the exponentiated generalized Topp-Leone exponential model

IF 1.7 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Journal of Radiation Research and Applied Sciences

Pub Date : 2025-01-07 DOI: 10.1016/j.jrras.2024.101287

Majdah Mohammed Badr, Jumanah Ahmed Darwish, Fatimah Alkhathaami

In this article, a four parameter distribution is proposed which is known as exponentiated generalized Topp Leone – exponential distribution (EGTLED). Some statistical properties of the proposed EGTLED are studied. The maximum likelihood estimation (MLE) approach is used to estimate the parameters of the EGTLED. A simulation is also studied to see the performance of the method of estimation. Finally, two real data applications related to radiation and engineering sciences are also done. It is shown that the proposed EGTLED is suitable fit for the data that used.

引用次数: 0