Volume 3 Number 1, 2013 On Semi Prime Ideals in Nearlattices Md Zaidur Rahman, Md Bazlar Rahman and A.S.A.Noor Pages 1-9 Download Traveling Wave Solutions of Nonlinear Klein-Gordon Equation by Extended (G/G')-expansion Method Harun-Or-Roshid, Nizhum Rahman and M. Ali Akbar Pages 10-16 Download Ekman Boundary Layer Mixed Convective Heat Transfer Flow through a Porous Medium with Large Suction M. M. Haque, M. S. Uddin, M. A. Islam and M. H. Uddin Pages 17-26 Download Effect of Reynolds Number on Aerodynamic Characteristics of an Airfoil with Flap Md. Hasanuzzaman and Mohammad Mashud Pages 27-40 Download MHD Free Convection within Trapezoidal Cavity with Uniformly Heated Bottom Wall Muhammad Sajjad Hossain and Mohammad Abdul Alim Pages 41-55 Download Irregular Interval–Valued Fuzzy Graphs Madhumangal Pal and Hossein Rashmanlou Pages 56-66 Download Some Star and Bistar Related Divisor Cordial Graphs S. K. Vaidya and N. H. Shah Pages 67-77 Download On the Additive and Multiplicative Structure of Semirings T. Vasanthi and N. Sulochana Pages 78-84 Download An Analysis of Friedmann Robertson Walker Metric with the Variation of G and $\Gamma$ M.A. Hoque, M. Abdus Sattar Titu, M.S. Hossain and M.Shahabuddin Pages 85-93 Download Gamma Rings of Gamma Endomorphisms Md. Sabur Uddin and Md. Sirajul Islam Pages 94-99 Download