Electronic Journal of Differential Equations, Vol. 2012 (2012), No. 24, pp. 1-10. Title: Existence of solutions for second-order impulsive boundary-value problems Authors: Abdelkader Boucherif (King Fahd Univ., Dhahran, Saudi Arabia) Ali S. Al-Qahtani (King Fahd Univ., Dhahran, Saudi Arabia) Bilal Chanane (King Fahd Univ., Dhahran, Saudi Arabia) Abstract: In this article we discuss the existence of solutions of second-order boundary-value problems subjected to impulsive effects. Our approach is based on fixed point theorems. Submitted September 12, 2011. Published February 07, 2012. Math Subject Classifications: 34B37, 34B15, 47N20. Key Words: Second order boundary value problems; impulse effects; fixed point theorem; lower and upper solutions.