EDITORIAL BOARD
Editor in Chief
Maricor N. Soriano, Ph.D.
Associate Editors
Zubaida U. Basiao, Ph.D.
Biology
Joel Joseph S. Marciano, Jr., Ph.D.
Computer Science, Engineering
Nemesio E. Montaño, Ph.D.
Biochemistry
Rosana Balangue-Tarriela, Ph.D.
Earth Sciences (Geology)
Fernando A. Siringan, Ph.D.
Marine Sciences
Cristine Villagonzalo, Ph.D.
Physics
Corazon D. Villareal, Ph.D.
Managing Editor
Dercylis G. Mararac
Editorial Assistant
SCIENCE DILIMAN (ISSN 0115-7809) is published bi-annually by the Research Dissemination and Utilization Office (RDUO) of the Office of the Vice Chancellor for Research and Development (OVCRD), University of the Philippines Diliman. Address all communications to the Editor in Chief, SCIENCE DILIMAN, Research Dissemination and Utilization Office, Office of the Vice Chancellor for Research and Development, Lower Ground Floor, Phivolcs Bldg., C. P. Garcia Ave., University of the Philippines, Diliman, Quezon City 1101 Philippines.
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SCIENCE DILIMAN
A Journal of Pure and Applied Sciences
TEOFILO A. ABRAJANO JR., Ph.D.
Department of Earth and Environmental Sciences Rensselaer Polytechnic Institute
Troy, New York abrajt@rpi.edu
ALFONSO M. ALBANO, Ph.D.
Department of Physics Bryn Mawr College Bryn Mawr, Pennsylvania aalbano@brynmawr.edu ANGEL C. ALCALA, Ph.D
Angelo King Center for Research and Environmental Management Silliman University
Dumaguete City, Philippines
sumanila@psdn.org.ph; suakcrem@philwebinc.com FELIXBERTO A. BUOT, Ph.D.
Naval Research Laboratory Washington, D.C.
buot@estd.nrl.navy.mil; fab@cfdrc.com JOSEFINO C. COMISO, Ph.D.
Laboratory for Hydrospheric Processes NASA Goddard Space Flight Center Greenbelt, Maryland
comiso@joey.gsfc.nasa.gov LOURDES J. CRUZ, Ph.D.
The Marine Science Institute University of the Philippines Diliman Quezon City, Philippines
luly@upmsi.ph
EDGARDO D. GOMEZ, Ph.D.
The Marine Science Institute University of the Philippines Diliman Quezon City, Philippines
edgomez@upmsi.ph PER JUEL HANSEN, Ph.D.
Marine Biological Laboratory University of Copenhagen Helsingor, Denmark pjhansen@zi.ku.dk
JORGEN HYLLEBERG, Ph.D.
Department of Biological Sciences and Marine Ecology University of Aarhus
Aarhus, Denmark hylleberg@biology.aau.dk CHRIS M. IRELAND, Ph.D.
Department of Medicinal Chemistry University of Utah
Salt Lake City, Utah
cireland@deans.pharm.utah.edu
INTERNATIONAL ADVISORY COMMITTEE
EMIL Q. JAVIER, Ph. D.
Institute of Plant Breeding
University of the Philippines Los Baños College, Laguna, Philippines
emil.javier@cgiar.org AMADOR MURIEL, Ph.D.
Data Transport System New York, New York dtsny@msn.com
BALDOMERO M. OLIVERA, Ph.D.
Department of Biology University of Utah Salt Lake City, Utah olivera@biology.utah.edu EDUARDO A. PADLAN, Ph.D.
Kensington, Maryland EdPadlan@aol.com
WILLIAM G. PADOLINA, Ph.D.
International Rice Research Institute College, Los Baños, Laguna w.padolina@cgiar.org KELVIN S. RODOLFO, Ph.D.
Department of Earth and Environmental Sciences University of Illinois
Chicago, Illinois krodolfo@uic.edu GARY E. RODRICK, Ph.D.
Department of Food Science and Human Nutrition University of Florida
Gainesville, Florida
GERodrick@mail.ifas.ufl.edu FRANCIS J. SCHMITZ, Ph.D.
Department of Chemistry and Biochemistry University of Oklahoma
Norman, Oklahoma
fjschmitz@chemdept.chem.ou.edu GAVINO C. TRONO JR., Ph.D.
The Marine Science Institute University of the Philippines Diliman Quezon City, Philippines
trono@upmsi.ph