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Browsing Faculty of Science by Title

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  • On Connectedness Concepts in Fuzzy Topological Spaces 
    Shayid, Md.Abu (University of Rajshahi, 2013)
    The goal of the thesis is to find out some new connectedness concepts in fuzzy topological spaces. Some concepts of connectedness in fuzzy topological spaces that already exist in the literature are recalled here also. In ...
  • 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 Fuzzy Compactness 
    Talukder, Md. Abdul Mottalib (University of Rajshahi, 2015)
    The fundamental concept of a fuzzy set and fuzzy set operations was first introduced by L. A. Zadeh [175] in 1965 and it provides a natural foundation for treating mathematically the fuzzy phenomena, which exists pervasively ...
  • On Generalizations of Separation properties, Compactness and Connectedness 
    Biswas, Sanjoy Kumar (University of Rajshahi, Rajshahi, 2019)
    The thesis is concerned with generalizations of some important and interesting properties of separation, compactness and connectedness in a span of seven chapters. In the first chapter pseudo regular and pseudo normal ...
  • On Generalizations of Separation Properties, Compactness and Connectedness 
    Biswas, Sanjoy Kumar (University of Rajshahi, 2019)
    The thesis is concerned with generalizations of some important and interesting properties of separation, compactness and connectedness in a span of seven chapters. In the first chapter pseudo regular and pseudo normal ...
  • 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 ...
  • On Ro and R1 Properties in Fuzzy Topological Spaces 
    Azam, S. M. Faqruddin Ali (University of Rajshahi, 2011)
    The goal of this thesis is to find out some new R1 -concepts for fuzzy topological spaces. Besides some concepts of fuzzy R0, R1, T0, T1, T2 and regular topological spaces that are already existing in the literature are ...
  • On Some Approximate Solutions of Nonlinear Physical and Biological Problems 
    Uddin, Md. Alhaz (University of Rajshahi, 2010)
    Most of the perturbation methods are developed to find the periodic solutions of nonlinear systems with small nonlinearities, transients are not considered. In 1947, first Russian scientists Krylov and Bogo Liubov introduced ...
  • On Some Aspects of Topology 
    Das, Swapan Kumar (University of Rajshahi, 2014)
    A topological space is a non-empty set X together with a collection T of subsets of X satisfying the conditions: (i) X, T, (ii) the union of any class of sets in T belongs to T, (iii) The intersection ...
  • 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 ...
  • 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 ...
  • On Supra Fuzzy Topological Spaces 
    Hoque, Md. Fazlul (University of Rajshahi, 2011)
    The fundamental concept of a fuzzy set was introduced by L. A. Zadeh [111] in 1965 to provide a foundation for the development of many areas of knowledge. Consequently, this provides a natural frame work for generalizing ...
  • Pattern of Migration in Joypurhat District of Bangladesh: A Case Study 
    Talukder, Md. Ashraful Alom (University of Rajshahi, 2010)
    This study is based on primary data. The primary data were collected from Joypurhat district by PPS sampling method. The main purpose of this study is to identify the effects of demographic and socio-economic variables ...
  • Peroxo Complexes and their Oxygen Transfer Reactions 
    Khan, Mr. Abdur Rahim (University of Rajshahi, 1993)
    The chemistry of the peroxo complexes of various transition metals has received considerable attention in recent· years mainly because they are sources of active oxygen atoms and can be used as stoichiometric as well as ...
  • Peroxo Complexes and Their Oxygen Transfer Reactions 
    Khan, Mr. Abdur Rahim (1993)
    The chemistry of the peroxo complexes of various transition metals has received considerable attention in recent· years mainly because they are sources of active oxygen atoms and can be used as stoichiometric as well ...
  • Pertinent Education and Women Empowerment: A Study on Rajshahi Division in Bangladesh 
    Haque, Md. Rajwanul (University of Rajshahi, 2011)
    Women empowerment is one of the most important issues of modern era. After a major contribution in the development process, female population has low status as compared to men, specifically in the developing world. Gradually, ...
  • Phytochemical and Biological Investigation of the Plants Moringa Oleifera Lam. and Duranta Repens Linn 
    Nikkon, Farjana (University of Rajshahi, 2005)
    The plant Moringa oleifera Lam. belongs to the family Moringaceae is locally known as "Sajna" (Eng. Drumstick) found to grow every., here in Bangladesh, India, Pakistan and other tropical and subtropical countries. It has ...
  • Phytochemical and Biological Studies on the Plants Calotropis gigantea (Linn) and Amoora rohituka Roxb 
    Habib, M. Rowshanul (University of Rajshahi, 2013)
    The universal role of medicinal plants in the treatment of diseases is established by their employment in all important systems of medicine. Many active drugs have been derived from different medicinal plants, and the ...
  • Prediction of Adult Stature of Japanese Boys and Girls 
    Rahman, J.A.M. Shoquilur (University of Rajshahi, 2003)
    The longitudinal growth of individual's stature of the present study was characterized from early childhood to adulthood. The samples used here were 509 males and 311 females. A triphasic generalized logistic model (BTT ...
  • Prediction of Final Stature from a New 3D Two-Stage Growth Model 
    Shahin, Md. Abu (University of Rajshahi, 2015)
    The purpose of the present study was to establish higher dimensional growth model and then to predict the final stature from a new 3D two-stage growth model. To check the validity of the models, a secondary longitudinal ...

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