Mawlana Bhashani Science and Technology University is a government financed public university of Bangladesh. It is named after the charismatic, legendary political leader of the country Mawlana Bhashani. This University is the first of its kind among the public universities in Bangladesh. The medium of instruction is English. To ensure a better academic atmosphere, there is no provision for any political activities by the teachers, students and employees in the campus.Every year, about 700 students get enrolled in undergraduate programs to study in this institution. The total number of teachers is about 80. The University has continued to expand over the last few years. This includes the construction of new academic building, several halls for the students etc. Wikipedia.
Rahman M.M.,Jahangirnagar University |
Mamun A.A.,Jahangirnagar University |
Alam M.S.,Mawlana Bhashani Science and Technology University
Journal of the Korean Physical Society | Year: 2014
Positron acoustic shock waves (PASWs) in an unmagnetized four-component plasma system consisting of a cold mobile viscous positron fluid, hot positrons and electrons following the nonthermal distributions of Cairns et al. [Geophys. Res. Lett. 22, 2709 (1995)], and immobile positive ions are studied both analytically and numerically. The well-known reductive perturbation method is used to derive the Burgers equation. The basic features of the PASWs are significantly modified by the effects of the kinematic viscosity, the nonthermal electrons and hot positrons, the ratio of the electron temperature to the hot positron temperature σ, and the ratio of the hot positron (electron) number density to the cold positron number density μ 1 (μ 2). The importance of our results to various astrophysical and laboratory plasmas are concisely discussed. © 2014 The Korean Physical Society.
Rahman M.M.,Jahangirnagar University |
Alam M.S.,Mawlana Bhashani Science and Technology University |
Mamun A.A.,Jahangirnagar University
European Physical Journal Plus | Year: 2014
A theoretical investigation has been made on positron-acoustic (PA) Gardner solitons (GSs) and double layers (DLs) in four-component plasma system consisting of immobile positive ions, mobile cold positrons, nonthermal hot positrons, and nonthermal hot electrons. The reductive perturbation method has been used to derive Korteweg-de Vries (K-dV), modified K-dV (mK-dV), and Gardner equations. The basic features (viz. amplitude, polarity, speed, etc.) of the PA GSs as well as PA DLs are examined. The analytical comparison among K-dV solitons, mK-dV solitons, and GSs are also made. It has been identified that the amplitude, polarity, speed, thickness of such PA solitons and DLs are significantly modified due to the presence of nonthermal distributed hot electrons and hot positrons. The results of our investigation should be useful for understanding various interstellar space plasma environments (viz. ionosphere, lower part of magnetosphere, auroral acceleration regions, supernovas, pulsar environments, cluster explosions, active galactic nuclei, etc.). © 2014, Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg.
Haider M.M.,Mawlana Bhashani Science and Technology University
Contributions to Plasma Physics | Year: 2013
A theoretical investigation has been made on obliquely propagating ion-acoustic (IA) solitary structures in a three components magneto-plasma containing cold inertial ions, Boltzmann distributed positrons, and hot non-thermal electrons. The Zakharov-Kuznetsov equation has been derived by the reductive perturbation method, and its solitary wave solution has been analyzed. Multi-dimensional instability has also studied by the small-k (long wave-length plane wave) perturbation expansion technique, which is found to exist in such a plasma. The effects of the external magnetic field, nonthermal electrons, obliqueness and temperature ratio have significantly modified the basic properties of small but finite-amplitude IA solitary waves, such as amplitude, width, instability criterion and the growth rate. The present investigation contributes to the physics of the nonlinear IA waves in space and laboratory electron-positron-ion magneto-plasmas in which wave damping produces an electron tail. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Haider M.M.,Mawlana Bhashani Science and Technology University |
Mamun A.A.,Jahangirnagar University
Physics of Plasmas | Year: 2012
A rigorous theoretical investigation has been made on Zakharov-Kuznetsov (ZK) equation of ion-acoustic (IA) solitary waves (SWs) and their multi-dimensional instability in a magnetized degenerate plasma which consists of inertialess electrons, inertial ions, negatively, and positively charged stationary heavy ions. The ZK equation is derived by the reductive perturbation method, and multi-dimensional instability of these solitary structures is also studied by the small-k (long wave-length plane wave) perturbation expansion technique. The effects of the external magnetic field are found to significantly modify the basic properties of small but finite-amplitude IA SWs. The external magnetic field and the propagation directions of both the nonlinear waves and their perturbation modes are found to play a very important role in changing the instability criterion and the growth rate of the unstable IA SWs. The basic features (viz., amplitude, width, instability, etc.) and the underlying physics of the IA SWs, which are relevant to space and laboratory plasma situations, are briefly discussed. © 2012 American Institute of Physics.
Khan M.A.,Bangladesh Institute of Technology |
Hossain M.U.,Mawlana Bhashani Science and Technology University |
Rakib-Uz-Zaman S.M.,Shahjalal University of Science and Technology |
Morshed M.N.,Bangladesh Institute of Technology
Scandinavian Journal of Immunology | Year: 2015
Ebola viruses (EBOVs) have been identified as an emerging threat in recent year as it causes severe haemorrhagic fever in human. Epitope-based vaccine design for EBOVs remains a top priority because a mere progress has been made in this regard. Another reason is the lack of antiviral drug and licensed vaccine although there is a severe outbreak in Central Africa. In this study, we aimed to design an epitope-based vaccine that can trigger a significant immune response as well as to prognosticate inhibitor that can bind with potential drug target sites using various immunoinformatics and docking simulation tools. The capacity to induce both humoral and cell-mediated immunity by T cell and B cell was checked for the selected protein. The peptide region spanning 9 amino acids from 42 to 50 and the sequence TLASIGTAF were found as the most potential B and T cell epitopes, respectively. This peptide could interact with 12 HLAs and showed high population coverage up to 80.99%. Using molecular docking, the epitope was further appraised for binding against HLA molecules to verify the binding cleft interaction. In addition with this, the allergenicity of the epitopes was also evaluated. In the post-therapeutic strategy, docking study of predicted 3D structure identified suitable therapeutic inhibitor against targeted protein. However, this computational epitope-based peptide vaccine designing and target site prediction against EBOVs open up a new horizon which may be the prospective way in Ebola viruses research; the results require validation by in vitro and in vivo experiments. © 2015 John Wiley & Sons Ltd.