Table of Contents

1. A New Technique for Solving Variable Coefficients Wave Equations (Hossein Aminikhah and Milad Hemmatnezhad) pp. 59-72

2. A Sustainable Drilling Technique (M. Enamul Hossain, Chefi Ketata, M. Ibrahim Khan and M. Rafiqul Islam) pp. 73-90

3. Status of Pollution around Dhaka Export Processing Zone and its Impact on Bangshi River Water, Bangladesh (M. Safiur Rahman, A. Hossain Molla and S.M. Yassir Arafat) pp. 91-110

4. An Approximation to the Solution of Beam Equation by Trigonometric Methods (J. Biazar and S. Bozorgi) pp. 111-116

5. Model Selection for Scour Design around Bridge Piers and Abutments in the Alluvial Rivers in Bangladesh (M. Amir Hossain Bhuiyan, Md. Munsur Rahman and Shigeyuki Suzuki) pp. 117-128

6. Solution of Heat Equation by Variational Iteration Method (Hossein Aminikhah and Jafar Biazar) pp. 129-141