Davangere University

About: Davangere University is a education organization based out in Davangere, India. It is known for research contribution in the topics: Nanofluid & Heat transfer. The organization has 236 authors who have published 413 publications receiving 3673 citations.

Two-Phase Darcy-Forchheimer Flow of Dusty Hybrid Nanofluid with Viscous Dissipation Over a Cylinder

Abstract: The current article concerns with the flow of an incompressible dusty hybrid nanofluid over a stretching cylinder by considering Darcy–Forchheimer porous medium and viscous dissipation. Heat transfer and momentum behavior of water-based fluid with suspended nanoparticles (copper and Titania) is scrutinized in this study. The two-phase model which handles the particle phase and the fluid phase is accounted in this study. The modelled equations are reduced to a set of non-linear ordinary differential equations (ODEs) using suitable similarity variables. Later, these reduced equations are solved by adopting the Runge–Kutta Fehlberg-45(RKF-45) technique along with shooting scheme. The graphs are plotted to examine the impact of various dimensionless parameters on velocity and thermal profiles for both dust and fluid phases. For engineering apprehensions, the coefficient of skin friction and Nusselt number are also calculated and scrutinized through graphs. The outcomes reveal that, increase in mass concentration of particles improves the heat transfer but declines velocity gradient. The increase in velocity interaction parameter of the fluid reduces the velocity gradient of fluid phase but increases the velocity of the dust phase. Finally, increasing values of curvature parameter improves the velocity and temperature of both the phases.

Synergistic impact of Lactobacillus fermentum, Lactobacillus plantarum and vincristine on 1,2-dimethylhydrazine-induced colorectal carcinogenesis in mice

Abstract: Lactobacillus sp. is the most dominant probiotic strain of bacteria. Evidence indicates that the consumption of Lactobacillus sp. reduces the risk of colorectal cancer in animal models. The present study was carried out to determine whether administration of Lactobacillus fermentum/ Lactobacillus plantarum alone or in combination with vincristine have a synergistic impact on the control of colorectal cancer in an animal model. Mice with 1,2 dimethylhydrazine (DMH) hydrochloride-induced colon cancer were fed with L. fermentum and L. plantarum isolated along with vincristine. An increase in body weight, a decrease in ammonia concentration, a decrease in β glucosidase and β glucuronidase enzyme activity and a reduction in the number of crypts in the mice in the pre-carcinogen-induced group was noted when compared to these variables in the post-carcinogen-induced group. The body weight of the mice fed L. fermentum along with vincristine was increased (6.5 g), and was found to be 3.5 times higher compared to that of the control. A marked decrease in the ammonia concentration (240 mg), and β glucosidase (0.0023 IU) and β glucopyranose enzyme activity (0.0027 IU) was observed; 22.59% less ammonia concentration, 73.26% less β glucosidase activity and 56.46% less β glucuronidase enzyme activity was noted when compared to the control. A significant reduction in the number of aberrant crypt foci (ACF) (90%) was observed when compared to the control. Maximum protection was observed in the mice fed the probiotics and vincristine prior to cancer induction. Among the different dietary combinations tested in the present study, L. fermentum and vincristine showed a more extensive reduction in ammonia concentration, β glucosidase, β glucuronidase activity and the number of ACF.

MHD flow and melting heat transfer of dusty Casson fluid over a stretching sheet with Cattaneo–Christov heat flux model

Abstract: The features of magnetohydrodynamics (MHD) flow and melting heat transfer of dusty Casson fluid over a stretching sheet have been disclosed The modified version of Fourier's law through Cattaneo–C