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Bhubaneshwar, India

Rout B.R.,Krupajal Engineering College | Parida S.K.,Siksha O' Anusandhan University | Panda S.,National Institute of Technology Calicut
International Journal of Chemical Engineering | Year: 2013

This paper aims to investigate the influence of chemical reaction and the combined effects of internal heat generation and a convective boundary condition on the laminar boundary layer MHD heat and mass transfer flow over a moving vertical flat plate. The lower surface of the plate is in contact with a hot fluid while the stream of cold fluid flows over the upper surface with heat source and chemical reaction. The basic equations governing the flow, heat transfer, and concentration are reduced to a set of ordinary differential equations by using appropriate transformation for variables and solved numerically by Runge-Kutta fourth-order integration scheme in association with shooting method. The effects of physical parameters on the velocity, temperature, and concentration profiles are illustrated graphically. A table recording the values of skin friction, heat transfer, and mass transfer at the plate is also presented. The discussion focuses on the physical interpretation of the results as well as their comparison with previous studies which shows good agreement as a special case of the problem. © 2013 B. R. Rout et al.

Parida S.K.,Siksha O' Anusandhan University | Panda S.,National Institute of Technology Calicut | Rout B.R.,Krupajal Engineering College
Alexandria Engineering Journal | Year: 2015

This work considers the two-dimensional steady MHD boundary layer flow of heat and mass transfer over a flat plate with partial slip at the surface subjected to the convective heat flux. The particular attraction lies in searching the effects of variable viscosity and variable thermal diffusivity on the behavior of the flow. In addition, non-linear thermal radiation effects and thermophoresis are taken into account. The governing nonlinear partial differential equations for the flow, heat and mass transfer are transformed into a set of coupled nonlinear ordinary differential equations by using similarity variable, which are solved numerically by applying Runge-Kutta fourth-fifth order integration scheme in association with quasilinear shooting technique. The novel results for the dimensionless velocity, temperature, concentration and ambient Prandtl number within the boundary layer are displayed graphically for various parameters that characterize the flow. The local skin friction, Nusselt number and Sherwood number are shown graphically. The numerical results obtained for the particular case are fairly in good agreement with the result of Rahman [6]. © 2015 Production and hosting by Elsevier B.V.

Rout B.R.,Krupajal Engineering College | Parida S.K.,Siksha O' Anusandhan University | Pattanayak H.B.,Sailabala Womens College
Journal of Engineering Thermophysics | Year: 2014

The influence of radiation and chemical reaction on a natural convective MHD flow through a porous medium bounded by a vertical infinite surface in the presence of transverse magnetic field is studied. The basic equations governing the flow, heat and mass transfer are reduced to a set of ordinary differential equations by appropriate transformations. Governing equations are solved by perturbation technique for velocity, temperature and concentration, and that has been presented graphically for different values of involved parameters. It is observed that effects of magnetic parameter and radiation parameter in the flow field affect the flow significantly. © 2014 Pleiades Publishing, Ltd.

Mohanty A.K.,Siksha O' Anusandhan University | Senapati M.R.,Krupajal Engineering College | Beberta S.,BPUT | Lenka S.K.,University of Rajasthan
Neural Computing and Applications | Year: 2013

Mammogram-breast X-ray-is considered the most effective, low cost, and reliable method in early detection of breast cancer. Although general rules for the differentiation between benign and malignant breast lesions exist, only 15-30 % of masses referred for surgical biopsy are actually malignant. In this work, an approach is proposed to develop a computer-aided classification system for cancer detection from digital mammograms. The proposed system consists of three major steps. The first step is region of interest (ROI) extraction of 256 × 256 pixels size. The second step is the feature extraction; we used a set of 19 GLCM and GLRLM features, and the 19 (nineteen) features extracted from gray-level run-length matrix and gray-level co-occurrence matrix could distinguish malignant masses from benign masses with an accuracy of 96.7 %. Further analysis was carried out by involving only 12 of the 19 features extracted, which consists of 5 features extracted from GLCM matrix and 7 features extracted from GLRL matrix. The 12 selected features are as follows: Energy, Inertia, Entropy, Maxprob, Inverse, SRE, LRE, GLN, RLN, LGRE, HGRE, and SRLGE; ARM with 12 features as prediction can distinguish malignant mass image and benign mass with a level of accuracy of 93.6 %. Further analysis showed that area under the receiver operating curve was 0.995, which means that the accuracy level of classification is good or very good. Based on that data, it was concluded that texture analysis based on GLCM and GLRLM could distinguish malignant image and benign image with considerably good result. The third step is the classification process; we used the technique of decision tree using image content to classify between normal and cancerous masses. The proposed system was shown to have the large potential for cancer detection from digital mammograms. © 2012 Springer-Verlag London Limited.

Medicherla V.R.R.,Siksha O' Anusandhan University | Mohanta R.R.,Krupajal Engineering College | Mohanta K.L.,Siksha O' Anusandhan University | Nayak N.C.,Siksha O' Anusandhan University | And 6 more authors.
AIP Conference Proceedings | Year: 2011

Titanium dioxide (TiO 2) is deposited on Si(111) substrate by Pulsed Laser Deposition (PLD) technique and is investigated using Raman Spectroscopy and X-ray Photoelectron Spectroscopy (XPS) techniques. Raman Spectroscopy indicates that the as-deposited TiO 2 film is in anatase phase. After sputtering in-situ in the XPS preparation chamber, TiO 2 is reduced to TiO and Ti metal, and the reduction is more prominent in the top layers of the film.

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