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In this thesis, di erent types of m-polar fuzzy graphs (mPFGs) have been considered. The major problems considered in the thesis are generalized mPFGs and their properties, operations on mPFGs, degree of vertices of m-polar fuzzy graphs, density of mPFGs, mPF planar graphs, isomorphism and weak self complement mPFGs, edge regular mPFGs, the applications of mPFGs, generalized regular BFGs and product bipolar fuzzy line graphs. This thesis consists of ten chapters. In the rst chapter, th...

The trade of indigenous ornamental fish mainly depends on wild collections, which is creating tremendous pressure on existing natural stock diversity. Noble gourami, Ctenops nobilis McClelland, 1845 is one of the most valuable freshwater indigenous ornamental fish currently depends only on natural collection for its trade. In order to decline the population of fish, suppliers cannot meet the market demand so breeding and large scale seed production of C. nobilis is an urgent need. K...

In the current study, we synthesized Copper Oxide Nanoparticles (CuONPs) by chemical and green synthesis methods. Several chemicals were used in the chemically synthesized method, whereas in green method, water extract of Azadirachta indica (A. indica) leaves were used. In case of both synthesis methods, Copper sulphate salt was used as a precursor. After completion of synthesis, several physio-chemical techniques were used such as FT-IR, DLS, Surface Zeta potential, EDX, XRD, SEM and TE...

The East India Company entered in Bengal through South West Bengal by following the footsteps of different indigenous and foreign invaders from the remote past. The East India Company as a commercial organisation became the full-phase state by acquiring power gradually in entire Bengal in the second half of the 18 th century. They gained different forms of power in different periods to control and regulate the affairs of certain areas. In that period the Company intended to dom...