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FlowBreakdown of Hybrid Nanofluid on a Rigid Surface with Power Law Fluid as Lubricated Layers

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Computer modeling in Engineering & Sciences 2024年第2期138卷 1485-1499页

作者： mirza Naveed Jahangeer Baig Nadeem.alamat Sohail Nadeem NaeemUllah mohamed Bechir Ben Hamida Hassan ali Ghazwani Sayed m.Eldin A.S.al-Shafay Instituite of mathematics Khwaja Fareed University of Engineering and Information TechnologyRahim yar Khan64200Pakistan Department of mathematics Quaid-I-Azam UniversityIslamabad44000Pakistan Department of mathematics Wenzhou UniversityWenzhou325035China College of Engineering Department of Mechanical EngineeringImam Mohammad Ibn Saud Islamic University(IMSIU)Riyadh11564Saudi Arabia Research Laboratory of Ionized Backgrounds and Reagents Studies(EmIR) Preparatory Institute for Engineering Studies of Monastir(IPEIM)University of MonastirMonastir5060Tunisia Higher School of Sciences and Technology of Hammam Sousse Department of PhysicsJazan82511Kingdom of Saudia Arabia Department of mechanical Engineering Faculty of engineeringJazan UniversityP.O.Box 45124JazanKingdom of Saudia Arabia Center of Research Faculty of EngineeringFuture University in EgyptNew Cairo11835Egypt Department of mechanical Engineering College of EngineeringPrince Sattam bin Abdulaziz UniversityAlkharj16436Saudi Arabia

Thiswork investigates an oblique stagnation point flowof hybrid nanofluid over a rigid surface with power lawfluidas lubricated layers. Copper (Cu) and Silver (Ag) solid particles are used as hybrid particles acting in water H2O asa base fluid. The mathematical formulation of flow configuration is presented in terms of differential systemthat isnonlinear in nature. The thermal aspects of the flow field are also investigated by assuming the surface is a heatedsurface with a constant temperature T. Numerical solutions to the governing mathematical model are calculatedby the RK45 algorithm. The results based on the numerical solution against various flow and thermal controllingparameters are presented in terms of line graphs. The specific results depict that the heat flux increases over thelubricated-indexed parameter.

关键词： Oblique stagnation point flow hybrid nanofluid lubricated layer magnetohydrodynamics

Petrogenesis and Tectonic Implications of the Jabal Hadb Ad Dayheen Granitic Complex, Central Arabian Shield

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Journal of Earth Science 2023年第1期34卷 20-36页

作者： Qinlong Tong Ziying Li Honghai Fan Naser Jahdali mubarak m.al-Nahdi CNNC Beijing Research Institute of Uranium Geology National Key Laboratory of Remote Sensing Information and Image Analysis TechnologyBeijing100029China CNNC Key Laboratory of Uranium Resource Exploration and Evaluation Technology Beijing Research Institute of Uranium GeologyBeijing100029China Saudi Geological Survey Jeddah21514Kingdom of Saudi Arabia

The Jabal Hadb Ad Dayheen granitic complex in central Saudi Arabia is an alkaline granitic ring complex associated with a collapsed caldera. It mainly consists of monzogranite in the center, biotite-hornblende porphyritic granite, and biotite-aegirine-riebeckite granite, intruded by some felsic and mafic dikes. The petrological and geochemical characteristics show that the granitic suites consist of metalminous-peralkaline A-type granites. The secondary ion mass spectrometry(SImS) zircon U-Pb analysis yielded ^(206)Pb/^(238)U ages of 613.3 ± 8.1 – 603.8 ± 3.8, 602.4 ± 3.8, 596 ± 5.6 ma for biotitehornblende porphyritic granite, microgranite, and biotite-aegirine-riebeckite granite, respectively. The trace element characteristics and positive ε_(Hf)(t) values(3.2–12.2) indicate that the granitic rocks of the Dayheen Ring Complex are mainly derived from the juvenile crust with the involvement of mantlederived materials. Combined with the regional tectonic evolution, the formation of the Dayheen Ring Complex mainly covered four periods:(1) subduction initiation and formation of arc terranes(870–620 ma)—volcanic craters formed during this period provided the channel for alkaline complex intrusion;(2) collision between East and West Gondwana continents and formation of the north East African Orogen(640–613 ma)—monzogranite stock at the center of the ring complex emplaced during this period;(3) post-collision extension and collapse(613–602 ma)—red metaluminous biotite-hornblende porphyritic granite and microgranite sheets in the rim of the Dayheen Ring Complex emplaced during this period;(4) within-plate extension(602 – 545 ma) —white peralkaline biotite-aegirine-riebeckite granite and plenty of felsic and mafic dikes in the rim mainly formed during this period. The granitic rocks of the Dayheen Ring Complex mainly formed during the transitional stage of post-collison to within-plate extension after the collision between East and West Gondwana continents, and part of them

关键词： ring complex A-type granite zircon zircon U-Pb dating tectonic evolution Arabian Shield

Assessment of bisphenols in children's toy and baby products in the middle East

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Emerging Contaminants 2024年第3期10卷 336-342页

作者： K.martínez-Guijarro B.Gevao m.Porcelli S.al-Salem Saif Uddin m.Bahloul H.Taqi m.Hajeyah D.Krishnan S.Rajagopalan A.Boota Environment Pollution and Climate Program Kuwait Institute for Scientific ResearchP.O.Box 23884SafatKuwait EPA Sierra Leone

A major concern from the scientific community has been raised since evidence of Bisphenol A(BP-A)can leach out from the products where they are incorporated as well as its endocrine disrupting effects observed in animals and ***-A and several related chemicals such as Bisphenol AP(BP-AP),Bisphenol B(BPeB),Bisphenol S(BPeS),Bisphenol AF(BP-AF),Bisphenol(BPeP),Bisphenol Z(BP-Z)were analyzed in this ***-A and BP-S were the only bisphenols detected in the samples analyzed in this *** median(range;mean)concentrations of BP-A found in this study was 321 ng/g(11-200932;4893 ng/g).The analysis was carried out by sonicating 0.1 g of a cryo-milled sample aliquot in methanol followed by UPLC-mS/mS *** concentrations of BP-A were found in several products labeled as BP-A free such as nursing bottles which are particularly problematic from the children's exposure point of *** study presents the first reliable bisphenols in children's toys and baby products commercialized in the middle *** is,however,a need to continue monitoring these compounds,especially in low-cost toys,and the so-called BP-A-free products,which appear to have high levels of target contaminants and can pose an exposure risk for infants and children in the region.

关键词： Bisphenols Bisphenol A(BP-A) Bisphenol S(BPeS) Children Toys

A Hybrid Neural Network and Box-Jenkins models for Time Series Forecasting

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Computers, materials & Continua 2022年第3期70卷 4829-4845页

作者： mohammad Hadwan Basheer m.al-maqaleh Fuad N.al-Badani Rehan Ullah Khan mohammed A.al-Hagery Department of Information Technology College of ComputerQassim UniversityBuraydahSaudi Arabia Department of Computer Science College of Applied SciencesTaiz UniversityTaizYemen Intelligent Analytics Group(IAG) College of ComputerQassim UniversityBuraydahSaudi Arabia Faculty of Computer Sciences and Information Systems Thamar UniversityThamarYemen Faculty of Administration Science Ibb UniversityIbbYemen Department of Computer Science College of ComputerQassim UniversityBuraydahSaudi Arabia

Time series forecasting plays a significant role in numerous applications,including but not limited to,industrial planning,water consumption,medical domains,exchange rates and consumer price *** main problem is insufficient forecasting *** present study proposes a hybrid forecastingmethods to address this *** proposed method includes three *** first model is based on the autoregressive integrated moving average(ARImA)statistical model;the second model is a back propagation neural network(BPNN)with adaptive slope and momentum parameters;and the thirdmodel is a hybridization between ARImA and BPNN(ARImA/BPNN)and artificial neural networks and ARImA(ARImA/ANN)to gain the benefits of linear and *** forecasting models proposed in this study are used to predict the indices of the consumer price index(CPI),and predict the expected number of cancer patients in the Ibb Province in *** standard measures used to evaluate the proposed method include(i)mean square error,(ii)mean absolute error,(iii)root mean square error,and(iv)mean absolute percentage *** on the computational results,the improvement rate of forecasting the CPI dataset was 5%,71%,and 4%for ARImA/BPNN model,ARImA/ANN model,and BPNN model respectively;while the result for cancer patients’dataset was 7%,200%,and 19%for ARImA/BPNNmodel,ARImA/ANN model,and BPNNmodel ***,it is obvious that the proposed method reduced the randomness degree,and the alterations affected the time series with data *** ARImA/ANN model outperformed each of its components when it was applied separately in terms of increasing the accuracy of forecasting and decreasing the overall errors of forecasting.

关键词： Hybrid model forecasting non-linear data time series models cancer patients neural networks box-jenkins consumer price index

Soil Organic Carbon mineralization as Affected by Cyclical Temperature Fluctuations in a Karst Region of Southwestern China

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Pedosphere 2015年第4期25卷 512-523页

作者： CI En mahdi m.al-KAISI WANG Liange DING Changhuan XIE Deti College of Resources and Environment Southwest University Department of Agronomy Iowa State University

The diurnal fluctuation in soil temperature may influence soil organic carbon （SOC） mineralization, but there is no consensus on SOC mineralization response to the cyclical fluctuation in soil temperature. A 56-d incubation experiment was conducted to investigate the effects of constant and variable temperatures on SOC mineralization. Three soils were collected from the karst region in western Guizhou Province, southwestern China, including a limestone soil under forest, a limestone soil under crops and a yellow soil under crops. According to the World Reference Base （WRB） classification, the two limestone soils were classified as Haplic Luvisols and the yellow soil as a Dystric Luvisol. These soils were incubated at three constant temperatures （15, 20 and 25 ℃） and cyclically fluctuating temperatures （diurnal cycle between 15 and 25 ℃）. The results showed that the 56-d cumulative SOC mineralized （C56） at the fluctuating temperatures was between those at constant 15 and 25 ℃, suggesting that the cumulative SOC mineralization was restricted by temperature range. The SOC mineralization responses to the fluctuating temperatures were different among the three soils, especially in contrast to those at constant 20 ~C. Compared with constant 20 ℃, significant （P 〈 0.05） decreases and increases in C56 value were found in the limestone soil under forest and yellow soil under crops at the fluctuating temperatures, respectively. At the fluctuating temperatures, the forest soil with lower temperature coefficient Q10 （the relative change in SOC mineralization rate as a result of increasing the temperature by 10 ℃） had a significantly （P 〈 0.05） lower SOC mineralization intensity than the two cropland soils. These indicated that differences in temperature pattern （constant or fluctuating） could significantly influence SOC mineralization, and SOC mineralization responses to the fluctuating temperatures might be affected by soil characteristics. moreover, the warmer temperatures mi

关键词： labile C limestone soil recalcitrant C temperature coefficient (Q10) yellow soil

Pythagorean Neutrosophic Planar Graphs with an Application in Decision-making

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Computers, materials & Continua 2023年第6期75卷 4935-4953页

作者： P.Chellamani D.Ajay mohammed m.al-Shamiri Rashad Ismail Department of mathematics Sacred Heart College(Autonomous)Tirupattur635601TamilnaduIndia Department of mathematics St.Joseph’s College of EngineeringOMRChennai600119TamilnaduIndia Department of mathematics Faculty of Science and ArtsKing Khalid UniversityMuhayl AssirSaudi Arabia Department of mathematics and Computer Faculty of ScienceIbb UniversityIbbYemen

Graph theory has a significant impact and is crucial in the structure of many real-life *** simulate uncertainty and ambiguity,many extensions of graph theoretical notions were *** graphs play a vital role in modelling which has the property of non-crossing *** crossing edges benefit,they have some drawbacks,which paved the way for the introduction of planar *** overall purpose of the study is to contribute to the conceptual development of the Pythagorean Neutrosophic *** basic methodology of our research is the incorporation of the analogous concepts of planar graphs in the Pythagorean Neutrosophic *** significant finding of our research is the introduction of Pythagorean Neutrosophic Planar graphs,a conceptual blending of Pythagorean Neutro-sophic and Planar *** idea of Pythagorean Neutrosophic multigraphs and dual graphs are also introduced to deal with the ambiguous *** paper investigates the Pythagorean Neutrosophic planar values,which form the edges of the Pythagorean neutrosophic *** concept of Pythagorean Neutrosophic dual graphs,isomorphism,co-weak and weak isomorphism have also been explored for Pythagorean Neutrosophic planar graphs.A decision-making algorithm was proposed with a numerical illustra-tion by using the Pythagorean Neutrosophic fuzzy graph.

关键词： Pythagorean neutrosophic planar graph planarity value isomorphism dual graphs multigraph

Buoyancy driven Flow of a Second-Grade Nanofluid flow Taking into Account the Arrhenius Activation Energy and Elastic Deformation:models and Numerical Results

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Fluid Dynamics & materials Processing 2021年第2期17卷 319-332页

作者： R.Kalaivanan N.VishnuGanesh Qasem m.al-m.allal Department of mathematics Vivekananda CollegeMadurai625234India PG and Research Department of mathematics Ramakrishna Mission Vivekananda CollegeChennai600004India Department of mathematical Sciences United Arab Emirates UniversityAl AinAbu DhabiUnited Arab Emirates

The buoyancy driven flow of a second-grade nanofluid in the presence of a binary chemical reaction is analyzed in the context of a model based on the balance equations for mass,species concentration,momentum and *** elastic properties of the considered fluid are taken into *** two-dimensional slip flow of such non-Newtonian fluid over a porous flat material which is stretched vertically upwards is *** role played by the activation energy is accounted for through an exponent form modified Arrhenius function added to the Buongiorno model for the nanofluid *** effects of thermal radiation are also examined.A similarity transformations is used to turn the problem based on partial differential equations into a system of ordinary differential *** resulting system is solved using a fourth order RK and shooting *** velocity profile,temperature profile,concentration profile,local skin friction,local Nusselt number and local Sherwood number are reported for several *** influence of the chemical reaction on the properties of the concentration and momentum boundary layers is critically discussed.

关键词： Arrhenius activation energy buoyancy effects chemical reaction elastic deformation nanofluid nonlinear thermal radiation

Stock appraisal for Atlantic tripletail(Lobotes surinamensis;Bloch,1790)in the Bay of Bengal,Bangladesh

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Journal of Oceanology and Limnology 2024年第5期42卷 1683-1694页

作者： Suman BARUA Qun LIU Ahmed Fazley RABBY mdAbdullah al-mAmUN Xu CHEN Rokeya SULTANA Aidah BalOCH College of Fisheries Ocean University of ChinaQingdao 266003China Department of Fisheries Ministry of Fisheries and LivestockDhaka 1215Bangladesh Bangladesh Fisheries Research Institute Cox’s Bazar 4700Bangladesh Directorate of Secondary and Higher Education Ministry of EducationDhaka 1000Bangladesh Gwadar Development Authority Gwadar 91200Pakistan

The Atlantic tripletail(Lobotes surinamensis)is a high revenue-generating fish species predominantly caught by mechanized artisanal fishers community and the most available member of its family in *** is a ground work of fish stock assessment study in the Bay of Bengal region to explore the life history parameters and associated biomass of this species,using three length-based approaches of TropFishR,the length-based Bayesian biomass estimation(LBB),and Froese’s length based indicators(LBIs).An almost homogenous body growth pattern(b=3.07;R^(2)=0.98)was observed in the length-weight relationship of *** life history parameters for tripletail,as determined by the von Bertalanffy Growth Function(VBGF)model,were L_(∞)=113.36 cm and k=0.51/*** length converted catch curve(LCCC)yielded an estimation of the total mortality(Z=1.77/a),with the natural mortality estimated at(m=0.53/a)and the fishing mortality estimated at(F=1.24/a).But,the ratio of mortality(F/m=0.15)by LBB captured the non-fully exploited status of biomass(B/B_(mSY)=2.1).LBI analysis indicated that the tripletail fishery’s spawning stock biomass is greater than the target and limit reference points,indicating a healthy state of biomass.

关键词： Bay of Bengal Lobotes surinamensis TropFishR length based indicator(LBI) length-based Bayesian biomass estimation(LBB) Bangladesh

Natural convective heat transfer in a square enclosure utilizing magnetic nanoparticles

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Propulsion and Power Research 2019年第3期8卷 194-209页

作者： Latifa m.al-Balushi m.J.Uddin m.m.Rahman Department of mathematics College of ScienceSultan Qaboos UniversityP.O.Box 36Al-KhodP.C.123MuscatSultanate of Oman Department of General Educational Development Daffodil International University102 ShukrabadDhanmondiDhaka 1207Bangladesh

In the present paper,unsteady natural convective heat transfer flow inside a square enclosure filled with nanofluids containing magnetic nanoparticles using nonhomogeneous dynamic model is investigated *** horizontal top wall of the enclosure is considered a colder wall and the bottom wall is maintained at uniform temperature whereas two other vertical walls of the cavity are thermally *** Galerkin weighted residual finite element method has been used to solve the governing non-dimensional partial differential *** numerical simulations,four types of nanoparticles such as magnetite(Fe_(3)O_(4)),cobalt ferrite(CoFe_(2)O_(4)),mn-Zn ferrite(mn-ZnFe_(2)O_(4)),and silicon dioxide(SiO2),and three types of base fluids such as water(H_(2)O),engine oil(EO)and kerosene(Ke)have been *** with previously published work are performed and excellent agreement is *** effects of various model parameters such as thermal Rayleigh number,nanoparticles volume fraction and nanoparticles shape factor are *** results show that the average Nusselt number increases as the thermal Rayleigh number and nanoparticles volume fraction *** results indicate that the average Nusselt numbers are higher for the blade shape of nanoparticles.

关键词： Nanofluids Nanoparticles Heat transfer Natural convection Square enclosure Finite element method