Kuwait Journal of Science最新文献_第3页

Analysis of magnetohydrodynamic flow of Jeffrey-Hamel fluid in convergent/divergent channels using the numerical algorithm 用数值算法分析杰弗里-哈默尔流体在收敛/发散通道中的磁流体动力流动

IF 1.1 4区综合性期刊

Kuwait Journal of Science Pub Date : 2026-01-01 Epub Date: 2025-07-30 DOI: 10.1016/j.kjs.2025.100479

Mohsin Ul Haq , Dolat khan , Zeeshan Ali , Subhan Ullah , Walid Emam , Dragan Pamucar , Yusra Tashkandy

{"title":"Analysis of magnetohydrodynamic flow of Jeffrey-Hamel fluid in convergent/divergent channels using the numerical algorithm","authors":"Mohsin Ul Haq , Dolat khan , Zeeshan Ali , Subhan Ullah , Walid Emam , Dragan Pamucar , Yusra Tashkandy","doi":"10.1016/j.kjs.2025.100479","DOIUrl":"10.1016/j.kjs.2025.100479","url":null,"abstract":"<div><div>This study explores the magnetohydrodynamic (MHD) flow of a Jeffrey-Hamel fluid within a convergent/divergent channel, a scenario relevant to both physical and biological sciences. The flow dynamics between nonparallel inclined walls are governed by highly nonlinear differential equations derived through conservation laws and similarity transformations. By applying similarity transformations, the governing partial differential equations (PDEs) are converted into ordinary differential equations (ODEs). The NDSolve approach is then utilized to obtain numerical solutions for these equations. A comparison with existing methods in the literature confirms the accuracy and reliability of the results. Additionally, the impact of various dimensionless physical parameters, such as the influence of the magnetic parameter, angle alpha, and the Deborah number on the velocity profile is investigated. The parameters angle alpha, Eckert number, and volume friction are examined on the temperature profile, followed by a detailed discussion of the findings.</div></div>","PeriodicalId":17848,"journal":{"name":"Kuwait Journal of Science","volume":"53 1","pages":"Article 100479"},"PeriodicalIF":1.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144771430","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 comparative analysis of forecasting models for air temperature: Classical time series, machine learning, and functional approaches 气温预测模型的比较分析：经典时间序列、机器学习和函数方法

IF 1.1 4区综合性期刊

Kuwait Journal of Science Pub Date : 2026-01-01 Epub Date: 2025-12-18 DOI: 10.1016/j.kjs.2025.100529

Hajar M. Alkhezi

{"title":"A comparative analysis of forecasting models for air temperature: Classical time series, machine learning, and functional approaches","authors":"Hajar M. Alkhezi","doi":"10.1016/j.kjs.2025.100529","DOIUrl":"10.1016/j.kjs.2025.100529","url":null,"abstract":"<div><div>Accurate temperature forecasting is essential for tackling current environmental, economic, and public health issues influenced by global climate changes. This study presents a new method for high-resolution temperature prediction by combining functional time series (FTS) decomposition with improved modeling techniques. The hourly air temperature (AT) data is broken down from Istanbul, Turkey, into deterministic and random parts to better track complex temporal patterns and short-term changes. Using a functional autoregressive (FAR) model together with standard methods including autoregressive integrated moving average (ARIMA), vector autoregressive (VAR), artificial neural networks (ANN), and autoregressive neural networks (ARNN), one-step-ahead forecasting is conducted for an entire year. Our results clearly show that the FAR model stands out. It significantly outperforms all other methods on key accuracy metrics like mean absolute error (MAE), mean absolute percentage error (MAPE), and root mean square error (RMSE). This results in the smallest forecast errors and the highest predictive consistency. This research supports more accurate decision-making in areas such as agriculture, energy management, and public safety. It makes a valuable contribution to societal resilience given climate uncertainty. The results demonstrate the clear superiority of the FAR model, which achieved the lowest error rates with a MAE of 10.39, a MAPE of 7.83%, and a RMSE of 9.49. This results in the smallest forecast errors and the highest predictive consistency. The findings highlight how important functional data analysis is in weather modeling and provide a strong framework for improving temperature forecasts. This research supports more accurate decision-making in areas such as agriculture, energy management, and public safety. It makes a valuable contribution to societal resilience given climate uncertainty.</div></div>","PeriodicalId":17848,"journal":{"name":"Kuwait Journal of Science","volume":"53 1","pages":"Article 100529"},"PeriodicalIF":1.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839259","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

Identification and evaluation of natural compounds in the bud extract of Capparis spinosa L. native to Iran for obesity management 伊朗产甜辣椒芽提取物中用于肥胖治疗的天然化合物的鉴定与评价

IF 1.1 4区综合性期刊

Kuwait Journal of Science Pub Date : 2026-01-01 Epub Date: 2025-11-20 DOI: 10.1016/j.kjs.2025.100517

Ameneh Khodadadi, Akbar Esmaeili

{"title":"Identification and evaluation of natural compounds in the bud extract of Capparis spinosa L. native to Iran for obesity management","authors":"Ameneh Khodadadi, Akbar Esmaeili","doi":"10.1016/j.kjs.2025.100517","DOIUrl":"10.1016/j.kjs.2025.100517","url":null,"abstract":"<div><div>This study examines the <em>Capparis spinosa</em> plant, prevalent in various regions of Iran, to evaluate its bud extract as a potential adjunctive treatment for obesity, a condition associated with significant health risks, including cardiovascular diseases. Gas chromatography-mass spectrometry (GC-MS) identified key compounds, including α-thujene and limonene, which may contribute to anti-obesity effects. The antioxidant capacity was assessed using the ferric reducing antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and hydrogen peroxide assays. The extract's antimicrobial properties were tested against six bacterial strains and <em>Candida albicans</em> using the disk diffusion method, which determined the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). Results suggest that <em>C. spinosa</em> bud extract may serve as a promising complementary therapy for obesity. The extract demonstrated significant antibacterial and antifungal activity against bacterial strains, including <em>Bacillus cereus</em>, <em>Escherichia coli</em>, and <em>Staphylococcus aureus</em>. Key compounds are believed to enhance its antimicrobial effectiveness. The extract exhibited a clear zone of inhibition in Mueller-Hinton agar, indicating its capacity to inhibit microbial growth. The MIC and MBC results confirmed its bactericidal and fungicidal properties, supporting its potential use in traditional medicine. Further investigations should delve into the diverse applications and mechanisms of <em>C. spinosa</em> extract in addressing obesity and microbial infections. This study provides a comprehensive evaluation of the bud extract of <em>C. spinosa</em>, focusing on its antioxidant and antimicrobial properties, which have not been extensively studied in the context of obesity management.</div></div>","PeriodicalId":17848,"journal":{"name":"Kuwait Journal of Science","volume":"53 1","pages":"Article 100517"},"PeriodicalIF":1.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145614303","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

RSM based optimization for sustainable removal of Cr(VI) and Pb(II) from tannery effluent using rotating disk mesh electrode by electrocoagulation 基于RSM的旋转圆盘网电极电絮凝法去除制革废水中Cr（VI）和Pb（II）的优化研究

IF 1.1 4区综合性期刊

Kuwait Journal of Science Pub Date : 2026-01-01 Epub Date: 2025-11-26 DOI: 10.1016/j.kjs.2025.100518

Arshad Iqbal , Khadija Qureshi , Zulfiqar Ali Bhatti , Abdul Qadeer Laghari , Imran Nazir Unar , Abdul Sattar Jatoi , Muhammad Azam Usto , Zubair Hashmi

{"title":"RSM based optimization for sustainable removal of Cr(VI) and Pb(II) from tannery effluent using rotating disk mesh electrode by electrocoagulation","authors":"Arshad Iqbal , Khadija Qureshi , Zulfiqar Ali Bhatti , Abdul Qadeer Laghari , Imran Nazir Unar , Abdul Sattar Jatoi , Muhammad Azam Usto , Zubair Hashmi","doi":"10.1016/j.kjs.2025.100518","DOIUrl":"10.1016/j.kjs.2025.100518","url":null,"abstract":"<div><div>The tanning process involves the usage of various toxic chemicals, disrupting concentrations in the ecosystem. The aim of this research was to develop an efficient electrode design and utilize it as an anode for treating chromium (Cr) and lead (Pb) present in tannery effluent through the electrocoagulation process in a sustainable manner and utilize the resulting sludge for pigment application. Performance of electrodes was analyzed using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The electrode's surface morphology and chemical composition were analyzed using SEM and EDX techniques, respectively. The SEM analysis revealed that the newly developed rotating disk mesh electrode (RDME) exhibited minimal scaling of contaminant and oxide layer of metal formation on its surface and better removal performance of chromium and lead from tannery effluent. EDX shows the evidence of elements attached due to passivation and the metal oxide layer in effluent. Furthermore, the process parameters optimized were current density, pH, RPM, and treatment time using the Box-Behnkin Design method with Design Expert 13.6 software. At optimized conditions with a current density of 19.26 mA/cm<sup>2</sup>, pH of 7, RPM of 160, and treatment time of 90 min, the rotating disk mesh electrode demonstrated impressive Cr and Pb removal efficiencies of 90 % and 94 % respectively. Moreover, the energy consumption for treatment of Cr and Pb were 31.75 kWh/m<sup>3</sup> for the rotating disk mesh electrode (RDME). It showed great potential of the rotating disk mesh electrode design as the optimal choice for commercial-scale application, offering efficient removal and less energy consuming process for the removal of Cr and Pb from tannery effluent through the electrocoagulation process.</div></div>","PeriodicalId":17848,"journal":{"name":"Kuwait Journal of Science","volume":"53 1","pages":"Article 100518"},"PeriodicalIF":1.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145614308","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

Solitary wave solutions and stability analysis of notable nonlinear evolution model via two analytical methods 用两种解析方法分析显著非线性演化模型的孤波解和稳定性

IF 1.1 4区综合性期刊

Kuwait Journal of Science Pub Date : 2026-01-01 Epub Date: 2025-08-22 DOI: 10.1016/j.kjs.2025.100482

Saima Arshed, Ghazala Akram, Maasoomah Sadaf, Minal Irshad

引用次数: 0

Berberine alleviated methotrexate-induced oxidative and inflammatory lung injury by modulating Nrf2 signaling in rats 小檗碱通过调节Nrf2信号通路减轻甲氨蝶呤诱导的大鼠氧化和炎症性肺损伤

IF 1.1 4区综合性期刊

Kuwait Journal of Science Pub Date : 2026-01-01 Epub Date: 2025-11-30 DOI: 10.1016/j.kjs.2025.100519

Ahmet Mentese , Selim Demir , Esin Yulug , Nihal Turkmen Alemdar , Tenzile Beyza Durmus , Elif Ayazoglu Demir , Yuksel Aliyazicioglu

{"title":"Berberine alleviated methotrexate-induced oxidative and inflammatory lung injury by modulating Nrf2 signaling in rats","authors":"Ahmet Mentese , Selim Demir , Esin Yulug , Nihal Turkmen Alemdar , Tenzile Beyza Durmus , Elif Ayazoglu Demir , Yuksel Aliyazicioglu","doi":"10.1016/j.kjs.2025.100519","DOIUrl":"10.1016/j.kjs.2025.100519","url":null,"abstract":"<div><div>Methotrexate (MTX), a medication commonly utilised in the management of autoimmune disorders and cancer, has been observed to precipitate pulmonary tissue injury when administered over an extended period. This may result in a range of adverse effects, including psychological and physiological distress, in patients. Berberine (BER), a molecule that has been employed in traditional therapeutic practices for centuries, is an alkaloid derivative with a multitude of pharmacological activities. The objective of the present study was to examine the therapeutic potential of BER in counteracting pulmonotoxicity induced by systemic MTX administration for the first time. In this experimental model, rats were subjected to a single intraperitoneal injection of 20 mg/kg of MTX on the first day in order to induce lung injury. Following this, the rats were then administered BER treatments at doses of 1 mg/kg or 2 mg/kg for a period of three consecutive days. Administration of MTX resulted in a significant suppression of nuclear factor erythroid 2-related factor 2 (Nrf2) levels in the lung tissue of rats when compared to the control group (∼7.0 fold; p < 0.01). Furthermore, MTX administration significantly induced lipid peroxidation, inflammation, and endoplasmic reticulum stress levels in comparison with the control group, leading to severe pulmonary histopathological symptoms (p < 0.001). Conversely, the administration of BER treatments led to a significant alleviation of degenerative biochemical and histopathological findings, achieved by modulating Nrf2 signalling (p < 0.05). Consequently, the present findings imply that BER may exert a positive effect on MTX-induced oxidative pulmonary damage, at least in part, by modulating the Nrf2 pathway.</div></div>","PeriodicalId":17848,"journal":{"name":"Kuwait Journal of Science","volume":"53 1","pages":"Article 100519"},"PeriodicalIF":1.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145681111","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

Effective statistical models for prediction of the tensile strength of rocks 预测岩石抗拉强度的有效统计模型

IF 1.1 4区综合性期刊

Kuwait Journal of Science Pub Date : 2026-01-01 Epub Date: 2025-12-04 DOI: 10.1016/j.kjs.2025.100520

Tamer Efe , Servet Demirdag , Nazmi Sengun , Kenan Tufekci , Rasit Altindag

{"title":"Effective statistical models for prediction of the tensile strength of rocks","authors":"Tamer Efe , Servet Demirdag , Nazmi Sengun , Kenan Tufekci , Rasit Altindag","doi":"10.1016/j.kjs.2025.100520","DOIUrl":"10.1016/j.kjs.2025.100520","url":null,"abstract":"<div><div>This study investigated the relationships between indirect and direct tensile strength values of rocks using regression analysis. The uniaxial tensile strength (UTS) values of nine distinct rock specimens were ascertained, after which assessments were conducted for Brazilian tensile strength (BTS), flexural strength under concentrated load, and flexural strength under constant moment tests. In order to enhance the accuracy of estimating the UTS, the uniaxial compressive strength, apparent (open) porosity, and ultrasonic pulse velocity (UPV) of the rock specimens were determined, followed by regression analyses. The experimental findings revealed a notable discrepancy between the indirect tensile strength values and those obtained from the UTS. This study introduces a novel statistical approach integrating rock properties and indirect methods for UTS determination, presenting effective regression models applicable to practical scenarios. According to the multiple linear regression results, the BTS was identified as the most suitable indirect testing method, while the UPV was found to be the most relevant rock property for predicting UTS. Furthermore, results from flexural strength tests conducted under various standards advocate a test specimen size of 25∗50∗150mm as optimal for predicting tensile strength.</div></div>","PeriodicalId":17848,"journal":{"name":"Kuwait Journal of Science","volume":"53 1","pages":"Article 100520"},"PeriodicalIF":1.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145733419","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 analysis of peristaltic flow of Reiner-Rivlin fluid in a flexible curved channel 柔性弯曲通道中Reiner-Rivlin流体蠕动流动的传热传质分析

IF 1.1 4区综合性期刊

Kuwait Journal of Science Pub Date : 2026-01-01 Epub Date: 2025-10-03 DOI: 10.1016/j.kjs.2025.100501

S. Hina , Z. Asghar , W. Shatanawi

{"title":"Heat and mass transfer analysis of peristaltic flow of Reiner-Rivlin fluid in a flexible curved channel","authors":"S. Hina , Z. Asghar , W. Shatanawi","doi":"10.1016/j.kjs.2025.100501","DOIUrl":"10.1016/j.kjs.2025.100501","url":null,"abstract":"<div><div>This study investigates the peristaltic transport of a Reiner-Rivlin non-Newtonian fluid through a curved channel with compliant walls, incorporating heat and mass transfer effects. The main aim of the study is to provide the theoretical framework for applications with a peristaltic flow of complex fluid in different biological systems/biomedical equipment in a curved path. This theoretical framework is also applicable to the cardiovascular behavior and the designs of biomedical devices such as dialysis systems. The governing equations for momentum, energy, and concentration are formulated, and closed-form analytical solutions are obtained via a regular perturbation technique for small wavenumbers. Key findings reveal that curvature dramatically alters flow dynamics: velocity profiles transition from asymmetric (tilted toward the inner wall at low curvature) to symmetric (parabolic at high curvature), mimicking the geometric influence of blood vessels. The Reiner-Rivlin parameter approximately reduces 26 % of flow velocity compared to Newtonian fluids due to increased elastic solid-like behavior. As Reiner-Rivlin fluid has more shear thickening behavior, increasing the fluid parameter enhances the apparent viscosity, which leads to slower flow. The Soret effect drives concentration gradients approximately 38 %, with higher thermal diffusion promoting particle migration to cooler regions. Streamline patterns show that trapped bolus size diminishes with curvature, approaching straight-channel symmetry. These results provide critical insights into biological flows (e.g., gastrointestinal motility, vascular transport) and biomedical device design.</div></div>","PeriodicalId":17848,"journal":{"name":"Kuwait Journal of Science","volume":"53 1","pages":"Article 100501"},"PeriodicalIF":1.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145265503","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

Double diffusive convection in flow along heated and non-uniform cylinder with nonlinear kinematics 具有非线性运动学的加热非均匀圆柱体流动中的双扩散对流

IF 1.1 4区综合性期刊

Kuwait Journal of Science Pub Date : 2026-01-01 Epub Date: 2025-09-10 DOI: 10.1016/j.kjs.2025.100489

Nadeem Jan , Dil Nawaz Khan Marwat , Ali Althobaiti , Ahmed shafee , Asfandyar Khan , Fazal Ghani

{"title":"Double diffusive convection in flow along heated and non-uniform cylinder with nonlinear kinematics","authors":"Nadeem Jan , Dil Nawaz Khan Marwat , Ali Althobaiti , Ahmed shafee , Asfandyar Khan , Fazal Ghani","doi":"10.1016/j.kjs.2025.100489","DOIUrl":"10.1016/j.kjs.2025.100489","url":null,"abstract":"<div><div>This study investigates double diffusive convection in viscous fluid flow over a vertically aligned, heated, porous, and non-uniform cylinder exhibiting nonlinear stretching and shrinking. The field variables velocity, temperature, and concentration are modeled using nonlinear algebraic functions. By applying similarity transformations, the governing partial differential equations are reduced to a system of four coupled nonlinear ordinary differential equations, solved using MATLAB’s bvp4c scheme. The results show that increasing the thermal and solutal Grashof numbers by a factor of 2 leads to an increase of approximately 58% in the axial velocity near the cylinder surface, enhancing assisting flow behavior. An increase in the nonlinear stretching parameter reduces the thermal boundary layer thickness by up to 35%, while the mass transfer rate increases by over 40% in highly porous conditions. Skin friction coefficients and Nusselt and Sherwood numbers display strong nonlinear sensitivity to surface roughness and porosity. Notably, overshoot in velocity profiles is observed under specific parameter conditions, whereas temperature and concentration profiles remain monotonic. This model generalizes previous studies by encompassing both uniform and non-uniform surface properties and provides a versatile tool for simulating practical heat and mass transfer processes.</div></div>","PeriodicalId":17848,"journal":{"name":"Kuwait Journal of Science","volume":"53 1","pages":"Article 100489"},"PeriodicalIF":1.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044037","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

Oblique stagnation point flow of hybrid nanofluid on a stretching sheet with modified thermal conductivity models and Darcy's law 基于改进导热模型和达西定律的混合纳米流体在拉伸片上的斜滞止点流动

IF 1.1 4区综合性期刊

Kuwait Journal of Science Pub Date : 2026-01-01 Epub Date: 2025-07-28 DOI: 10.1016/j.kjs.2025.100481

Z. Abbas , J. Hasnain , M.Y. Rafiq , M.A. Saeed , H. Shahzad

{"title":"Oblique stagnation point flow of hybrid nanofluid on a stretching sheet with modified thermal conductivity models and Darcy's law","authors":"Z. Abbas , J. Hasnain , M.Y. Rafiq , M.A. Saeed , H. Shahzad","doi":"10.1016/j.kjs.2025.100481","DOIUrl":"10.1016/j.kjs.2025.100481","url":null,"abstract":"<div><div>Hybrid nanofluids have demonstrated improved thermal performance and stability across a wide range of applications, including thermal efficiency systems, solar collectors, energy production, nuclear processes, and enhanced heat transfer. Motivated by these promising applications, this study investigates two-dimensional incompressible oblique stagnation point flow over a stretching/shrinking sheet embedded in a porous medium. The analysis compares two widely used thermal conductivity models, the Yamada-Ota and Xue models, for hybrid nanofluids composed of graphene oxide (<span><math><mrow><mi>G</mi><mi>O</mi></mrow></math></span>) and iron oxide, magnetite (<span><math><mrow><mi>F</mi><msub><mi>e</mi><mn>3</mn></msub><msub><mi>O</mi><mn>4</mn></msub></mrow></math></span>) nanoparticles dispersed in a non-Newtonian engine oil (<em>EO</em>) base fluid. Additionally, the influences of thermal radiation, heat generation/absorption, and chemical reactions are incorporated to explore the heat and mass transfer characteristics. The governing equations are transformed into a system of ordinary differential equations using similarity transformations, and the resulting system is solved numerically via the fourth-order Runge-Kutta-Fehlberg integration method combined with an efficient shooting technique. The results reveal that increasing the magnetic field strength enhances the fluid temperature while reducing its velocity. Higher heat generation parameters lead to intensified thermal distribution, while lower permeability increases velocity instability. Quantitatively, the Xue model demonstrates a higher surface heat transfer rate than the Yamada-Ota model, and a larger Schmidt number reduces mass transfer rates. These insights are particularly valuable for optimizing heat and mass transfer in porous thermal management systems.</div></div>","PeriodicalId":17848,"journal":{"name":"Kuwait Journal of Science","volume":"53 1","pages":"Article 100481"},"PeriodicalIF":1.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144724753","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