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Analysis for flow of Jeffrey fluid with nanoparticles

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Chinese Physics B 2015年第4期24卷 269-276页

作者： T.Hayat sadia asad A.Alsaedi Department of Mathematics Quaid-i-Azam University Nonlinear Analysis and Applied Mathematics (NAAM) Research Group Faculty of Science King Abdulaziz University

An analysis of the boundary layer flow and heat transfer in a Jeffrey fluid containing nanoparticles is presented in this paper. Here, fluid motion is due to a stretchable cylinder. The thermal conductivity of the fluid is taken to be temperature-dependent. The partial differential equations of velocity, temperature, and concentration fields are transformed to a dimensionless system of ordinary differential equations. Nonlinear governing analysis is computed for the homotopy solutions. The behaviors of Brownian motion and thermophoresis diffusion of nanoparticles have been examined graphi- cally. Numerical values of the local Nusselt number are computed and analyzed.

关键词： stretching cylinder Jeffrey nanofluid convergence

Heat transfer analysis in the flow of Walters' B fluid with a convective boundary condition

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Chinese Physics B 2014年第8期23卷 382-388页

作者： T.Hayat sadia asad M.Mustafa Hamed H.Alsulami Department of Mathematics Quaid-i-Azam University 45320 Department of Mathematics Faculty of Science King Abdulaziz University School of Natural Sciences National University of Science and Technology (NUST)

Radiative heat transfer in the steady two-dimensional flow of Walters＇ B fluid with a non-uniform heat source/sink is investigated. An incompressible fluid is bounded by a stretching porous surface. The convective boundary condition is used for the thermal boundary layer problem. The relevant equations are first simplified under usual boundary layer assumptions and then transformed into a similar form by suitable transformations. Explicit series solutions of velocity and temperature are derived by the homotopy analysis method （HAM）. The dimensionless velocity and temperature gradients at the wall are calculated and discussed.

关键词： Walters' B fluid heat source/sink convective boundary condition analytic solution

The Hyperbolic Two Temperature Semiconducting Thermoelastic Waves by Laser Pulses

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Computers, Materials & Continua 2021年第6期67卷 3601-3618页

作者： Ismail M.Taye Kh.Lotfy A.A.El-Bary Jawdat Alebraheem sadia asad Department of Mathematics College of Science Al-ZulfiMajmaah University11952Saudi Arabia Department of Mathematics Faculty of ScienceZagazig UniversityZagazigEgyp t 3Arab Academy for Science Technology and Maritime TransportAlexandriaEgypt Department of Mathematics Faculty of ScienceTaibah UniversityMadinahSaudi Arabia National Committee for Mathematics Academy of Scientific Research and TechnologyCairoEgypt

A novel model of a hyperbolic two-temperature theory is investigated to study the propagation the thermoelastic waves on semiconductor *** governing equations are studied during the photo-excitation processes in the context of the photothermal *** outer surface of o semiconductor medium is illuminated by a laser *** generalized photo-thermoelasticity theory in two dimensions(2D)deformation is used in many models(Lord–Shulman(LS),Green–Lindsay(GL)and the classical dynamical coupled theory(CD)).The combinations processes between the hyperbolic two-temperature theory and photo-thermoelasticity theory under the effect of laser pulses are obtained *** harmonic wave technique is used to obtain the exact solutions of the main physical fields under *** mechanical,thermal and recombination plasma loads are applied at the free surface of the medium to obtain the complete solutions of the basic physical *** comparisons are made between the three thermoelastcity theories under the electrical effect of thermoelectric coupling *** influence of hyperbolic two-temperature,two-temperature and one temperature parameters on the distributions of wave propagation of physical fields for semiconductor silicon(Si)medium is shown graphically and discussed.

关键词： Photo-thermo-elasticity theory semiconductors laser pulses hyperbolic two temperature harmonic waves thermo-elastic waves

Liquid-liquid extraction of phosphorus from sulfuric acid solution using benzyl dimethyl amine

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International Journal of Minerals,Metallurgy and Materials 2021年第3期28卷 367-372页

作者： sadia Ilyas Rajiv Ranjan Srivastava Hyunjung Kim Department of Mineral Resources and Energy Engineering Jeonbuk National UniversityJeonjuJeonbuk 54896Republic of Korea Center for Advanced Chemistry Institute of Research and DevelopmentDuy Tan UniversityDa Nang 550000Vietnam Faculty of Natural Sciences Duy Tan UniversityDa Nang 550000Vietnam

This study addresses the liquid-liquid extraction behavior of phosphorus from a sulfuric acid solution using benzyl dimethyl amine(BDMA)in *** extraction equilibria investigated with varied BDMA concentrations could reveal the formation of 3[BDMA]·[H_(3)PO_(4)]^(-)complex in the organic *** thermodynamic properties determined at various temperatures indicated that the process was exothermic with a calculated enthalpy(△H^(Θ))of−24.0 kJ·mol^(−1).The organic-to-aqueous phase(O/A)volume ratio was varied to elucidate the quantitative extraction of *** McCabe-Thiele diagram plotted for the extraction isotherm was validated for the requirement of three counter-current stages in the extraction at an O/A volume ratio of 2.0/*** back-extraction of phosphorus from the loaded organic phase was quantitatively achieved by contacting 4.0 mol·L−1 H2SO4 solution in three stages of counter-current contact at an O/A volume ratio of 3/*** study can be applied to remove phosphorus from the sulfuric acid leach solutions of monazite processing,and many other solutions.

关键词： solvent extraction phosphorus benzyl dimethyl amine(BDMA) sulfuric acid solution McCabe-Thiele diagram

Why the"sugars"in traditional Unani formulations are a pivotal component:A viewpoint perspective

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Journal of Integrative Medicine 2022年第2期20卷 91-95页

作者： Mohammad Fazil sadia Nikhat Hakim Ajmal Khan Institute for Literary and Historical Research in Unani Medicine Central Council for Research in Unani MedicineJamia Millia Islamia CampusNew Delhi 110025India Department of Ilaj bit Tadbeer School of Unani Medical Education and ResearchJamia HamdardNew Delhi 110062India

Traditional medicine systems around the globe,like Unani,Ayurveda and traditional Chinese medicine,include a number of sugar-based formulations,which contain a large amount of saccharide-containing sweetener,such as honey,sucrose or *** pervasive lifestyle disorders throughout the world,there have been discussions to consider alternative sweetening ***,from the perspective of Unani medicine,we discuss how the saccharide-based sweeteners may be an essential component of these traditional preparations,like electuaries,which may be deprived of their bioactivities without these *** contemporary researches,it is known that apart from their own therapeutic effects,saccharides also form deep eutectic solvents which help in enhancing the bioactivity of other ingredients present in crude *** addition,they provide energy for fermentation which is essential for biotransformation of ***,the sugars also increase the shelf-life of these compound drugs and act as natural *** the basis of this review,we strongly believe that saccharide-based sweeteners are an essential component of traditional medicines and not merely an excipient.

关键词： Saccharides Sugar-based formulations Eutectic solvents Traditional medicine

A CFD study of the transport and fate of airborne droplets in a ventilated office:The role of droplet−droplet interactions

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Frontiers of Environmental Science & Engineering 2022年第3期16卷 49-62页

作者： Allan Gomez-Flores Gukhwa Hwang sadia Ilyas Hyunjung Kim Department of Environment and Energy Jeonbuk National UniversityJeonju Jeonbuk 54896Republic of Korea Department of Mineral Resources and Energy Engineering Jeonbuk National UniversityJeonju Jeonbuk 54896Republic of Korea

Previous studies reported that specially designed ventilation systems provide good air quality and safe environment by removing airborne droplets that contain viruses expelled by infected *** water droplets can be stable in the environment and remain suspended in air for prolonged *** between droplets may occur and droplet interactions should be ***,the previous studies focused on other physical phenomena(air flow,drag force,evaporation)for droplet transport and neglected droplet *** this work,we used computational fluid dynamics(CFD)to simulate the transport and fate of airborne droplets expelled by an asymptomatic person and considered droplet *** drag with turbulence for prediction of transport and fate of droplets indicated that the turbulence increased the transport of 1μm droplets,whereas it decreased the transport of 50μm *** contrast to only considering drag and turbulence,consideration of droplet interactions tended to increase both the transport and *** the length scale of the office is much larger than the droplet sizes,the droplet interactions,which occurred at the initial stages of release when droplet separation distances were shorter,had a significant effect in droplet fate by considerably manipulating the final locations on surfaces where droplets ***,it is proposed that when an exact prediction of transport and fate is required,especially for high droplet concentrations,the effects of droplet interactions should not be ignored.

关键词： Droplet interactions Aerosols Colloids CFD Transport Fate

Are developing countries prepared to face Ebola-like outbreaks?

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Virologica Sinica 2015年第3期30卷 234-237页

作者： Aftab Ahmad sadia Ashraf Shoji Komai Graduate School of Biological Sciences Nara Institute of Science and Technology National Academy of Young Scientists (NAYS) Pakistan University of the Punjab

Ebola virus disease has caused havoc in West Africa,with 11,162deaths and more than 27,181 cases(as of May 31,2015)being reported since the virus emerged in early2014 in *** maximum number of cases has been reported in Sierra Leone(12,827),while most of the reported deaths have occurred in Liberia(4,806),according to the Center for Disease Control and

关键词： deaths Africa Sierra Sudan emerged infra officials infected http reservoir

Experimental investigation on the stability of bride girder against tsunami forces

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Science China(Technological Sciences) 2014年第10期57卷 2028-2036页

作者： RAHMAN sadia AKIB Shatirah SHIRAZI S M Department of Civil Engineering Faculty of Engineering University of Malaya Institute of Environmental and Water Resources Management (IPASA) Faculty of EngineeringUniversiti Teknologi Malaysia

Bridges are the most useful part in the transportation *** disruption of the bridge structures may hamper the whole transportation *** the last recent tsunamis,numerous number of bridges were structurally damaged by the tsunami *** of proper provisions of tsunami forces in the design guidelines also contributes to the augmentations of the damage ***,proper evaluation of the tsunami forces on the bridge girder should be introduced in the design *** this study,laboratory experiments were carried out to reveal the damage mechanism of the bridge girder by assessing the exerted tsunami *** broken and unbroken waves were considered for the *** results showed that measured forces were larger for broken waves than those of unbroken *** force of the broken waves was 4.59 times as large as the hydrostatic ***,waves reached the peak value more rapidly for larger wave heights than those of smaller ***,a girder that is placed at a higher position is much vulnerable to tsunami hazard.

关键词： bridge force girder tsunami wave forms wave height

Towards Collaborative Robotics in Top View Surveillance:A Framework for Multiple Object Tracking by Detection Using Deep Learning

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IEEE/CAA Journal of Automatica Sinica 2021年第7期8卷 1253-1270页

作者： Imran Ahmed sadia Din Gwanggil Jeon Francesco Piccialli Giancarlo Fortino the Center of excellence in Information Technology Institute of Management SciencesPeshawar 25000Pakistan the Department of Information and Communication Engineering Yeungnam UniversitySouth Korea the School of Electronic Engineering Xidian UniversityXi’an 710071China the Department of Embedded Systems Engineering Incheon National UniversityIncheon 22012Korea the Department of Mathematics and Applications“R.Caccioppoli” University of Naples Federico IINapoli 80138Italy the Department of Informatics ModelingElectronics and SystemsUniversity of CalabriaRendeCS 87036Italy

Collaborative Robotics is one of the high-interest research topics in the area of academia and *** has been progressively utilized in numerous applications,particularly in intelligent surveillance *** allows the deployment of smart cameras or optical sensors with computer vision techniques,which may serve in several object detection and tracking *** tasks have been considered challenging and high-level perceptual problems,frequently dominated by relative information about the environment,where main concerns such as occlusion,illumination,background,object deformation,and object class variations are *** order to show the importance of top view surveillance,a collaborative robotics framework has been *** can assist in the detection and tracking of multiple objects in top view *** framework consists of a smart robotic camera embedded with the visual processing *** existing pre-trained deep learning models named SSD and YOLO has been adopted for object detection and *** detection models are further combined with different tracking algorithms,including GOTURN,MEDIANFLOW,TLD,KCF,MIL,and *** algorithms,along with detection models,help to track and predict the trajectories of detected *** pre-trained models are employed;therefore,the generalization performance is also investigated through testing the models on various sequences of top view data *** detection models achieved maximum True Detection Rate 93%to 90%with a maximum 0.6%False Detection *** tracking results of different algorithms are nearly identical,with tracking accuracy ranging from 90%to 94%.Furthermore,a discussion has been carried out on output results along with future guidelines.

关键词： Collaborative robotics deep learning object detection and tracking top view video surveillance