Transient natural convection magnetohydrodynamic motion over an exponentially accelerated vertical porous plate with heat source

Effects of heat source on the magnetohydrodynamic (MHD) one-dimensional flow past a vertical surface have been analyzed. Thermal radiation effect is present. The Laplace transformation procedure reduces the involved governing PDEs into the ODEs and hence closed form solutions have been obtained. The effect of permeability parameter (k), heat source parameter (Q), thermal radiation (R), suction parameter (γ), magnetic field parameter (M) have been analyzed on the velocity and temperature distributions, Skin friction coefficient (τ) and Nusselt number (Nu). The convergence of the obtained solutions has been seen through graphical results. Effects of skin friction (τ) and the Nusselt number (Nu) for different parameters have also been analyzed

Heat transfer in combined convective magnetohydrodynamic motion of nanofluid holding different shapes of nanoparticles in a channel under the influence of heat source

Heat transfer in mixed convection unsteady MHD flow of an incompressible nanofluid in a channel under the influence of heat source is studied. The channel with non-uniform walls temperature is taken in a perpendicular direction with a transverse magnetic field. Based on the substantial boundary conditions, three different flow conditions are examined. The problem is formed in PDEs with substantial boundary conditions. Four different forms of nanoparticles of identical volume fraction are employed in traditional base fluid water (H2O). Solutions for momentum and energy are attained by the perturbation method and examined graphically in different graphs. It is established that viscosity and thermal conductivity are the mainly well-known variables accountable for different results of velocity and temperature. It is also found that increasing heat source leads to an increase in nanofluid velocity and temperature and nano-size particles instance platelet and blade shapes have lesser momentum as related to brick and cylinder size of nanoparticles

Heat transfer in combined convective magnetohydrodynamic motion of nanofluid holding different shapes of nanoparticles in a channel under the influence of heat source

87-98Heat transfer in mixed convection unsteady MHD flow of an incompressible nanofluid in a channel under the influence of heat source is studied. The channel with non-uniform walls temperature is taken in a perpendicular direction with a transverse magnetic field. Based on the substantial boundary conditions, three different flow conditions are examined. The problem is formed in PDEs with substantial boundary conditions. Four different forms of nanoparticles of identical volume fraction are employed in traditional base fluid water (H2O). Solutions for momentum and energy are attained by the perturbation method and examined graphically in different graphs. It is established that viscosity and thermal conductivity are the mainly well-known variables accountable for different results of velocity and temperature. It is also found that increasing heat source leads to an increase in nanofluid velocity and temperature and nano-size particles instance platelet and blade shapes have lesser momentum as related to brick and cylinder size of nanoparticles

(R1981) Evaluating the MHD Non-Newtonian Fluid Motion Past a Stretching Sheet Under the Influence of Non-uniform Thickness with Dufour and Soret Effects Implementing Chebyshev Spectral Method

A study is made on the development of hydromagnetic non-Newtonian Casson and Williamson boundary layer flow in an electrically conducting fluid in the presence of heat flux, mass flux, and the uniform magnetic field. The governing non-linear system of PDEs is transformed into a set of non-linear coupled ODEs and then treated numerically by using the Chebyshev spectral method. The velocity, temperature, and concentration fields of the steady boundary layer flow, which are generated by the stretched sheet with non-uniform thickness are discussed. The simultaneous effects of the external magnetic field, Soret and Dufour phenomena with reference have been explored. The characteristic features of the flow phenomena are examined in some detail. Also, the main emphasis in the text of this paper was given to the structure of the friction factor, heat and mass transfer rates. The effect of different parameters, namely, magnetic number, Soret, Dufour parameters, Casson parameter, and Williamson parameter on velocity, thermal, and concentration distributions are discussed with the help of graphs. Finally, it is observed that the velocity decreases with an increase in the magnetic parameter. In addition, for the temperature profiles, opposite behavior is observed for increment in both the magnetic parameter and the Dufour parameter

Chemical reaction effect on MHD rotating fluid over a vertical plate with variable thermal conductivity: A numerical study

In this article, we have considered the simultaneous influence of chemical reaction and heat source on magnetohydrodynamic assorted convective heat and mass transfer flow past a vertical plate in a rotating system. The effects of applied magnetic field have also been taken into consideration while the induced magnetic field has not been reviewed due to very minor magnetic Reynolds number. The governing nonlinear partial differential equations for the flow, energy and species have been changed into highly nonlinear coupled system of ordinary differential equations by the help of similarity transformations and which are then solved numerically by applying fourth order Runge-Kutta technique associated along with shooting technique. The impacts of different variables on the velocity, temperature, concentration, skin friction and rate of heat and mass transfer distribution in the system have been shown graphically and explained in detail. In this paper we differentiate the results with already published works and good concurrence has been acquired to ensure the validity of the study

Microsporidial Keratoconjunctivitis

This is a Photo Essay and does not have an abstract

DyFFPAD: Dynamic Fusion of Convolutional and Handcrafted Features for Fingerprint Presentation Attack Detection

Automatic fingerprint recognition systems suffer from the threat of presentation attacks due to their wide range of applications in areas including national borders and commercial applications. Presentation attacks can be performed by fabricating the fake fingerprint of a user with or without the intention of the subject. This paper presents a dynamic ensemble of deep learning and handcrafted features to detect presentation attacks in known-material and unknown-material protocols. The proposed model is a dynamic ensemble of deep CNN and handcrafted features empowered deep neural networks both of which learn their parameters together. The proposed presentation attack detection model, in this way, utilizes the capabilities of both classification techniques and exhibits better performance than their individual results. The proposed model's performance is validated using benchmark LivDet 2015, 2017, and 2019 databases, with an overall accuracy of 96.10\%, 96.49\%, and 95.99\% attained on them, respectively. The proposed model outperforms state-of-the-art methods in benchmark protocols of presentation attack detection in terms of classification accuracy.Comment: arXiv admin note: text overlap with arXiv:2305.0939

Structure and Stability of W1/O/W2 Emulsions as Influenced by WPC and NaCl in Inner Aqueous Phase

Effect of WPC and NaCl in internal aqueous phase (W1) of W1/O/W2 type double emulsions was studied. Pre-emulsion and final emulsion were prepared using microfluidizer and Ultra-Turrax high shear mixer, respectively. The emulsions prepared using salt exhibited uniform droplet size distribution and structural integrity. WPC at 6% and NaCl at 2 or 4% levels demonstrated better sedimentation stability (\u3e 99%) and encapsulation stability (\u3e 95%) during preparation and storage of double emulsions. Samples without added NaCl showed poor emulsion stability and structural integrity. Higher level of WPC i.e. 8% resulted in poor stability and encapsulation efficiency of double emulsions at all salt levels. Combined use of optimum levels of WPC and NaCl along with processing interventions resulted in stable double emulsions even after storage at room temperature for 10 days. This study highlights the fact that structural integrity of internal aqueous phase (W1) depends upon presence of osmotic agent i.e. salt and stabilising proteins i.e. WPC