01-1 Notes for contributors V4N1&2 January-June 2014 • Vol. 26 No. 1 INTERNATIONAL ADVISORY BOARD Science Diliman ISSN 0115-7809 SCIENCE DILIMAN is published semi-annually (June a n d D e c e m b e r ) b y t h e U n i v e r s i t y o f t h e Philippines Diliman through the Off ice of the Vice-Chancellor for Research and Development. The journal features articles of pure and applied sciences. Editorial Board Editor-in-Chief Marco Nemesio E. Montaño, PhD Associate Editors Jose Maria P. Balmaceda, PhD Carlos Primo C. David, PhD Joel Joseph S. Marciano Jr. , PhD Jonas P. Quilang, PhD Arnel A . Salvador, PhD Irene M. Villaseñor, PhD Managing Editor Violeda A. Umali, PhD Editorial Assistants Narita E.C. de las Alas Dercylis G. Mararac On the Cover: Rush hour traffic along North EDSA, Quezon City. Photo taken by Marvic A. Pastrana of the OVCRD, UP Diliman. Rigoberto C. Advincula, PhD Department of Chemistry University of Houston Alfonso M. Albano, PhD Department of Physics Bryn Mawr College, Bryn Mawr, Pennsylvania Kenneth Buckel, PhD Food Science and Technology Group School of Chemical Sciences and Engineering The University of New South Wales Sydney, Australia Jose B. Cruz, PhD Department of Electrical and Computer Engineering Ohio State University Flor Crisanta F. Galvez, PhD Quality Assurance and Technical Manager Kerry Ingredients and Flavours (Americas Region) 7989-82nd St. , Delta, VC V4G 1L7, Canada Victor C. Gavino, PhD Department of Nutrition University of Montreal, Canada Kelvin S. Rodolfo, PhD Department of Earth and Environmental Sciences University of Illinois, Chicago, Illinois Rudolf A. Roemer, PhD Centre for Scientif ic Computing and Department of Physics University of Warwick Luis G. Sison, PhD Electrical and Electronics Engineering Institute University of the Philippines Diliman Raul K. Suarez, PhD Department of Ecology, Evolution and Marine Biology University of California, Sta. Barbara Contents of this journal may not be reproduced without the publisher’s written permission except for fair use, i.e. , for personal, educational and research purposes, in accordance with copyright law. Reprinting and republication in any other journal or compilation is likewise prohibited except as provided in the Publication Agreement when the author reprints his/her article for inclusion in any publication where he/she is the author or editor, subject to giving proper credit to the original publication of the article in the journal. The views expressed in the articles are those of the authors and do not necessarily reflect the views of the publisher and the editors.