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Chemically reacting ionized radiative fluid flow through an impulsively started vertical plate with induced magnetic field

100%

Ahmed T. , Alam M. M. , Ferdows M. , Tzirtzilakis E. E.

International Journal of Applied Mechanics and Engineering

2019

tom Vol. 24, no. 1

5--36

Numerical studies have been performed to examine the chemically reacting ionized fluid flow through a vertical plate with induced magnetic field. This study is performed for the cooling problem. To obtain the nondimensional non-similar momentum, the induced magnetic field, energy and concentration equations, usual nondimensional variables have been used. The numerical solutions for the velocity fields, induced magnetic fields, temperature distribution as well as concentration distribution are obtained for associated parameters using the explicit finite difference method. The local and average shear stresses, current densities, Nusselt number as well as the Sherwood number are also investigated. The obtained results are discussed with the help of graphs to observe effects of various parameters entering into the problem. Also the stability conditions of the explicit finite difference method are analyzed. Finally, a qualitative comparison of the present results with previously published results has been made.

Immunoinflammatory responses in gastrointestinal tract injury and recovery

100%

Verma G. , Marella A. , Shaquiquzzaman M. , Alam M. M.

Acta Biochimica Polonica

2013

tom 60

nr 2

Inflammation is a non-specific immune response to infection, irritation or other injury, the key features being redness, warmth, swelling and pain. A number of mediators are released which alter the resistance of mucosa to injury induced by noxious substances. Oxidative stress is a unifying mechanism of injury in many types of disease processes, including gastrointestinal diseases. It has been defined as an imbalance in the activity of pro and antioxidants. Pro-oxidants favour free radical formation while antioxidants inhibit or retard the same. A number of markers of oxidative stress have been identified. This review provides an overview of various mediators of inflammation and oxidative stress, and diverse approaches for prevention and treatment of gastrointestinal inflammation.

Flow through a rotating helical pipe with a wide range of the Dean number

75%

Alam M. M. , Ota M. , Ferdows M. , Islamv M. N. , Wahiduzzaman M. , Yamamoto K.

Archives of Mechanics

2007

tom Vol. 59, nr 6

501-517

THE INCOMPRESSIBLE viscous steady flow through a helical pipe of circular cross-section, rotating at a constant angular velocity about the center of curvature is investigated numerically to examine the combined effects of rotation (Coriolis force), torsion and curvature (centrifugal force) on the flow. The flow depends on the Taylor number Tr =…, the Dean number Dn =…- , the torsion parameter … and the dimensionless curvature of the duct …, where a is the radius of the helical pipe, HT the angular velocity, // the viscosity, v the kinematic viscosity, G the constant pressure gradient along the pipe axis and … - a parameter related to the torsion T and curvature 5, When … > 0, the rotation is in the direction in which the Coriolis force produces the curvature effect. When QT < 0, the rotation is in the direction in which the Coriolis force exhibits an opposite effect to that of curvature. The calculations are carried out for -500 < Tr < 500, 1500 < Dn < 2000 (large Dean number), 0 < (30 < 0.4 and 0 < … < 0.2. The total flux through the duct has a sharp peak at a negative Tr.

Immunogenicity of recombinant bacterial antigens expressed as fusion proteins in transgenic rice seeds

63%

Zaman S. , Islam S. M. T. , Khan M. K. , Alam M. M. , Uddin M. I. , Baby N. I. , Islam S. , Bhuiyan T. R. , Qadri F. , Seraj Z. I.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

2017

tom 98

nr 4