Faculty of Science: Recent submissions

  • Study of Sums and Products in Some Branches of Mathematics 
    Dey, Kalyan Kumar (University of Rajshahi, 2006)
    In many branches of Mathematics, a strategy for study of the mathematical entities is to view them as being made up of simpler entities in one or more ways. The task is then divided into two parts: (i) identifying and ...
  • Study On Some Problems of Non-Newtonian Fluid Mechanics 
    Hossain, Md. Aslam (University of Rajshahi, 2010)
    This is an elaborate discussion of main theme ideas and the condition in "Fluid mechanics", which help us to realized a clear concept of the background and elements of various viscous Newtonian and non-Newtonian flow ...
  • Eulerian Method for Third Order Linear Systems 
    Haque, Md. Abdul (University of Rajshahi, 2003)
    In this thesis, we have studied the solutions of the various types of third order linear systems of ordinary differential equations. In chapter I, we have considered the third order linear homogeneous system with constant ...
  • On Principal n-ideals of a Distributive nearlattice 
    Raihan, Md. Sazuwar (University of Rajshahi, 2006)
    This thesis studies some of the nature of Principal n-ideal of a distributive near lattice. The n-ideals of a lattice have been studied by several authors including [4] and [36]. For a fixed element n of a lattice L, a ...
  • KBM Asymptotic Method for third order Nonlinear Oscillations 
    Alam, Md. Shamsul (University of Rajshahi, 2000)
    In most treatments or nonlinear oscillations hy perturbation method. only periodic oscillations are treated; transients are not considered. Krylov and Bogoliubov have used a perturbation method to discuss transients in the ...
  • On Finitely Generated n-ldeals of a Nearlattice 
    Rahman, Md. Mizanur (University of Rajshahi, 2006)
    The thesis studies extensively the nature of finitely generated n-ideals of a near lattice. Many authors including [1], [34] and [35] have studied about n-ideals of a lattice. A convex sublattice containing a fixed element ...
  • On Some Universal Constructions for Fuzzy Topological Spaces 
    Rashid, Mohammed Harunor (University of Rajshahi, 2005)
    In this work, many known universal objects such as products, equalizers, pullbacks and their duals, namely, coproducts, coequalizers and pushouts for fuzzy topological spaces are studied in detail. Another known concept ...
  • Cosmic String in theory of General Relativity 
    Biswas, Md.Elias Uddin (1997)
    This thesis is organized as follows. Chapter I contains a brief discussion of the production of various topological defects in cosmological phase transitions in the early universe. The three kinds of topological defects ...
  • Asymptotic Methods for some third order Nonlinear Differential Equations 
    Alam, Md. Shamsul (University of Rajshahi, 1995)
    In this thesis, we investigate the oscillations of third order nonlinear systems by the asymptotic method. The asymptotic method of Krylov-Bogoliubov-Mitropolskii (KBM) is a popular technigue for obtaining analytic solution ...
  • Investigation of Some Aspects of Protoplanetary Model of Planetary Formation 
    Paul, Gour Chandra (University of Rajshahi, 2005)
    In this thesis we have investigated some aspects of the protoplanetary theory of planetary formation, namely, the structure of a protoplanet, sedimentation of heavy elements in a protoplanet, and the effect of mass loss ...
  • A Study on Distributive Nearlattices 
    Rahman, Md.Bazlar (University of Rajshahi, 1994)
    This thesis studies the nature of distributive nearlattices. By a nearlattice S we will always mean a (lower) semilattice which· has the property that any two elements possessing a common upper bound,have a supremum, Cornish ...
  • The Formation Constant of Dimer of Acetic Acid in Different Solvents. 
    Islam, M. Saidul (University of Rajshahi, 1980)
    Much of science of chemistry le concerned wt th making and breaking of chemical bonds. Pauling1 bu defined chemical bond as follows: "There is a chGlllical bond between two atoms or groups ot atom in case that the forces ...
  • On Some New Approximate Solutions of Fourth Order Nonlinear Differential Equations 
    Akbar, Md. Ali (University of Rajshahi, 2005)
    Most of the perturbation methods are developed to find periodic solutions of nonlinear systems; transients are not considered. First Krylov and BogoLiubov introduced a perturbation method to discuss the transients in the ...
  • Some Topics in Fuzzy Topological Spaces 
    Hossain, Md. Sahadat (University of Rajshahi, 2004)
    The concept of fuzzy set was introduced by the American Mathematician L. A. Zadeh for the first time in 1965. This provides a natural framework for generalizing many algebraic and topological concepts in various directions. ...
  • Investigating the Trend and Impact of Some Variables on HYV Boro Rice Production in Northern Region of Bangladesh 
    Kundu, Ranjan Kumar (University of Rajshahi, 2011)
    Boro rice is playing a significant role in the total rice production of Bangladesh. High yielding variety (HYV) Boro rice is grown enormously in the Northern region of Bangladesh. On the basis of per hector production, ...
  • Purification, Characterization of Protein from the Ventral Portion of Puffer Fish ( Tetraodon patoca Hamilton) and Comparison of Their Characteristics with Tetrodotoxin 
    Hasan, Md. Sohel (University of Rajshahi, 2006)
    A lectin was isolated and purified from the ventral portion of the Potca fish, Tetraodon patoca.The method was accomplished by gel filtration of crude protein extract on Sephadex G-50 followed by Ion exchange chromatography ...
  • Fertility Intention, Social Capital and Non-Government Organizations (NGOs) in Bangladesh 
    Karmaker, Arun Kumar (University of Rajshahi, 2014)
    Fertility intention has been drawn increasing attention on the significance of social capital and NGOs because there is interrelation among fertility intention, social capital and NGOs. It is interesting to note that NGOs ...
  • A Study on Standard n-Ideals of a Lattice 
    Syeed, Ahmed, Abu Sadat (University of Rajshahi, 2014)
    This thesis studies the nature of standard n-ideals of a lattice. The idea of n-ideals in a lattice was first introduced by Cornish and Noor. For a fixed element n of a lattice L, a convex sublattice containing n is called ...
  • Exploring Toxicogenomic Biomarkers using Statistical Models 
    Hasan, Mohammad Nazmol (University of Rajshahi, 2019)
    Toxicogenomics studies combines toxicology with several omics technologies (genornics, transcriptomics, proteomics and metabolomics) to assess the risk of toxins (small molecules, peptides or proteins) and chemical agents ...
  • A New Ledin from the Pulp of Punica granatum: Isolation, Charactemation and Antiproliferative Activities 
    Nurujjman, Md. (University of Rajshahi, 2017)
    A lectin (designated as PgL) was purified from the pulp of pomegranate (Punica granatum) by using Ion-exchange chromatography on DEAE cellulose column with the molecular mass of 28.0 ± 1.0 KDa as estimated by SOS-PAGE both ...

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