ISSN 2094-2818

ISSN 2094-2818

Co-Editors: Gisela P. Padilla-Concepcion
David Hall, Windell L. Rivera, and
Mark Gregory Robson



ARCHIVES
 
 

2017   2017 · 2015 · 2014 · 2013 · 2012 · 2011 · 2010 · 2009 · 2008 · top
 
VOLUME 7 NUMBER 1 (February to June 2017)
EDITORIAL Returning to What was Essentially Good - Welcome back PHILIPPINE SCIENCE LETTERS!
by Gisela Padilla—Concepcion

i
ARTICLE The abundance and morphometric characteristics of the endemic Pseudodiaptomus brehmi Kiefer, 1938 (Copepoda: Calanoida: Pseudodiaptomidae) in Lake Taal (Luzon Is., Philippines)
by Rey Donne S. Papa, Kenoses L. Legaspi, Cedie G. Blaza, Francesca S. Lirio, Nehemiah Gerold P. Bangalan, and T. Chad Walter

1
ARTICLE Low extracellular calcium and retinoic acid concentration promotes adipocyte differentiation in 3T3-L1 preadipocytes
by Joseph dela Cruz, Seok Geun Choi, Young Kyoon Oh, and Seong Gu Hwang

8
ARTICLE Non-differential DNA extraction of post-coital samples submitted as evidence for investigating sexual assault cases in the Philippines
by Jae Joseph Russell B. Rodriguez, Gayvelline C. Calacal, Rita P. Laude, and Maria Corazon A. De Ungria

14
ARTICLE Genome Shuffling for Improved Thermotolerance, Ethanol Tolerance and Ethanol Production of Saccharomyces cerevisiae 2013
by Fredmoore L. Orosco, Sean M. Estrada, Jessica F. Simbahan, Francesca S. Lirio, Virgie A. Alcantara, and Irene G. Pajares

22
ARTICLE A dynamical analysis of tuberculosis in the Philippines
by King James B. Villasin, Angelyn R. Lao, and Eva M. Rodriguez

29
ARTICLE Notes on Ceramium Roth and Gayliella TO Cho, LJ McIvor et SM Boo (Rhodophyta, Ceramiaceae) from the Philippines
by Elvie Jane C. Lagan, Gavino C. Trono, Jr.

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VOLUME 8 NUMBER 1 (January to June 2015)
EDITORIAL A Farewell Editorial: Birth and Rebirth of Philippine Science Letters and Growth of Philippine Science
by Gisela Padilla—Concepcion

1

2014   2017 · 2015 · 2014 · 2013 · 2012 · 2011 · 2010 · 2009 · 2008 · top
 
VOLUME 7 NUMBER 1 (January to June 2014)
ARTICLE Detection and sequence analysis of the alkM gene in Acinetobacter baumannii strain OS1 from oil sludge sample
by Cynthia T. Hedreyda and A. Mittsu G. Sarmago

1
ARTICLE Enhanced energy conversion performance of Philippine photovoltaic panels through tilt angle adjustments: A mechatronics approach
by Fidel Diaz, Jerrold Ngo, Maximillian Pascual, Albert Planes, and Alvin Chua

7
ARTICLE A comparison of smoothers for state-constrained optimal control problems
by Michelle Vallejos

13
ARTICLE The archaeology and palaeobiological record of Pasimbahan-Magsanib Site, northern Palawan, Philippines
by Janine Ochoa, Victor Paz, Helen Lewis, Jane Carlos, Emil Robles, Noel Amano, Maria Rebecca Ferreras, Myra Lara, Benjamin Vallejo, Jr., Gretchen Velarde, Sarah Agatha Villaluz, Wilfredo Ronquillo, and Wilhelm Solheim II

22
ARTICLE Species richness and patterns of occurrence of small non-flying mammals of Mt. Sto Tomas, Luzon Island, Philippines
by Aris A. Reginaldo and Anna Pauline O. de Guia

37
ARTICLE Taxonomic identification of “Ludong” fish from the Cagayan River (Philippines)
by Minerva Fatimae H. Ventolero, Evelyn C. Ame, Billy Joel N. Catacutan, and Mudjekeewis D. Santos

45
ARTICLE Responses of the bird community in the University of the Philippines Diliman after campus redevelopment and the decline of two common urban bird species
by Benjamin Vallejo, Jr. and Alexander B. Aloy

55
ARTICLE Sexuality-based compartmental model of spread of HIV in the Philippines
by Guido David and Fenina Mae Gomez

62
ARTICLE Stability switch and periodic solutions in delayed three-species model with Holling type III functional response
by Juancho A. Collera

67
ARTICLE Determination of soil-transmitted helminth infection and its association with hemoglobin levels among Aeta schoolchildren of Katutubo Village in Planas, Porac, Pampanga
by Janice V. Ng, Vicente Y. Belizario, Jr., and Florencia G. Claveria

73
ARTICLE Incident angle dependence of H2 adsorption on a defective Pt(111) surface: First-principles calculation
by Michelle T. Natividad, Nelson B. Arboleda Jr., and Hideaki Kasai

81
ARTICLE Molecular phylogeny of the genus Bikkia (Rubiaceae) including a new endemic Philippine inland forest species
by Grecebio Jonathan D. Alejandro, Lorenzo Angelo R. Santos, Hao Wei C. Hsu, Michelle Samantha S. Mejillano, Propa Joy R. Santor, and Victor B. Amoroso

88
ARTICLE Total variation-based image inpainting and denoising using a primal-dual active set method
by Marrick Neri and Esmeraldo Ronnie Rey Zara

97
REVIEW State of animal DNA barcoding in the Philippines: A review of COI sequencing of Philippine native fauna
by Ian Kendrich C. Fontanilla, Andrew F. Torres, Josephine Angela DG. Cañasa, Sandra L. Yap, and Perry S. Ong

104
ARTICLE A molecular dynamics investigation of water migration in a lipid bilayer for microalgae drying
by Robby Manrique, Aristotle Ubando, Al Rey Villagracia, Jennifer Corpuz, Allan Abraham Padama, Melanie David, Nelson Arboleda Jr., Alvin Culaba, and Hideaki Kasai

138
COMMENTARY Finding a common framework for the analysis of social and institutional change: A retrospective and an exploration
by Niceto S. Poblador

146
ARTICLE Taxonomy of black scavenger flies (Diptera: Sepsidae) from Luzon, Philippines
by Socrates D. Letana

155
ARTICLE A morphological and cyclic voltammetric investigation of spin-coated hexa-ammineruthenium(III)-incorporated Nafion® thin films
by Kevin Anthony Y. Kaw, Shirley T. Palisoc, and Michelle T. Natividad

171
ARTICLE A survey of plants used as repellents against hematophagous insects by the Ayta people of Porac, Pampanga province, Philippines
by Jasper John A. Obico and Elena M. Ragragio

179
ARTICLE Updates on the status of giant clams Tridacna spp. and Hippopus hippopus in the Philippines using mitochondrial CO1 and 16S rRNA genes
by Apollo Marco D. Lizano and Mudjekeewis D. Santos

187
COMMENTARY A proposed framework for a national coral reef assessment program
by Wilfredo Y. Licuanan and Porfirio M. Aliño

201
REVIEW Anticancer compounds from Philippine marine organisms act on major pathways in cancer
by Gisela P. Concepcion, Andrea Roxanne J. Anas, and Miguel A. Azcuna

207
COMMENTARY On the geological hazards that threaten existing and proposed reclamations of Manila Bay
by Kelvin S. Rodolfo

228
FEATURE National Scientist Dolores A. Ramirez: From Beating the Odds to Empowering Philippine Agriculture
by Malem Flores

241
ARTICLE A partial regression coefficient analysis framework to infer candidate genes potentially casual to traits in recombinant inbred lines
by Jan Michael Yap, Ramil Mauleon, Eduardo Mendoza, and Henry Adorna

245
 

VOLUME 7 NUMBER 2 (July to December 2014)
ARTICLE Probabilistic wind contouring and hazard mapping of barangay San Juan, Surigao City, Surigao del Norte, Philippines
by Marvin Aldrich R. Salazar and Lessandro Estelito O. Garciano

275
SHORT COMMUNICATION Biochemical comparison of bleaching and non-bleaching Montipora digitata (Order Scleractinia) in the Philippines
by Helen T. Yap, Dang Marviluz L. Espita, Marco Nemesio E. Montaño, Caryl S. Benjamin, and Edgardo D. Gomez

293
REVIEW The Philippine Marine Protected Area (MPA) Database
by Reniel B. Cabral, Porfirio M. Aliño, Adrian Chester M. Balingit, Christian M. Alis, Hazel O. Arceo, Cleto L. Nañola Jr., Rollan C. Geronimo, and MSN Partners

300
ARTICLE Utilization of loop-mediated isothermal amplification (LAMP) technology for detecting White Spot Syndrome Virus (WSSV) and Vibrio spp. in Litopenaeus vannamei in selected sites in the Philippines
by Amalea Dulcene D. Nicolasora, Benedict A. Maralit, Christopher Marlowe A. Caipang, Mudjekeewis D. Santos, Adelaida Calpe, and Mary Beth B. Maningas

309
ARTICLE Genetic diversity and the discovery of a putative cryptic species within a valued crab fishery, Portunus pelagicus (Linnaeus 1758), in the Philippines
by Persie Mark Q. Sienes, Demian A. Willette, Luz R. Romena, Clint G. Alvior, and Janet S. Estacion

317
SHORT COMMUNICATION Dual preharvest application of 1-methylcyclopropene (1-MCP) aqueous spray controls mango (Mangifera indica L. cv. 'Carabao') ripening
by Katherine Ann T. Castillo-Israel, Edralina P. Serrano, Elda B. Esguerra, and Florinia E. Merca

324
SHORT COMMUNICATION Preservation and extracellular enzyme production of myxomycetes from Lubang Island, Occidental Mindoro, Philippines
by Sittie Aisha B. Macabago and Thomas Edison E. dela Cruz

331
ARTICLE Antioxidant potentials of culturable endophytic yeasts from Phragmites australis Cav. (Trin) ex Steud. from copper-contaminated mining site in Mankayan, Benguet
by Roland M. Hipol

337
FEATURE Michael Purugganan: Evolution of a scientist from chemistry to plant genomics
by Neda Barghi

347
ARTICLE Rice Straw Compost as Amendment to Reduce Soil Copper Toxicity in Lowland Rice Paddy Field
by Virginia C. Cuevas, Joey I. Orajay, and Cirilo A. Lagman, Jr.

350
ARTICLE Biosorption of copper (II) by live biomasses of two indigenous bacteria isolated from copper-contaminated water
by Christopher Jay T. Robidillo, Nelson R. Villarante, and Lorele C. Trinidad

356
SHORT COMMUNICATION Determination of Cadmium (Cd2+) and Zinc (Zn2+) via Anodic Stripping Voltammetry with [Ru(NH3)6]3+/Nafion® Modified Electrodes
by Shirley Tiong Palisoc, Michelle Tiamzon Natividad, Patricia Denise DeVera, and Benjamin Simone B. Tuason

372
ARTICLE Phenotypic evaluation of some promising rare fruit crops in the Philippines
by Pablito M. Magdalita, Maria Ivana Kay M. Abrigo, and Roberto E. Coronel

376
ARTICLE Molecular and morphological differentiation among Coffea (Rubiaceae) varieties grown in the farms of Cavite Province, Philippines
by Ernelea P. Cao, Daisy May Constantino-Santos, Lara Anjela P. Ramos, Brian S. Santos, Jonas P. Quilang, and Ruel M. Mojica

387
SHORT COMMUNICATION On the occurrence of the Sulu Shrimp Metapenaeus suluensis Racek and Dall, 1965 (Crustacea: Decapoda : Penaeidae) in the Iloilo River, West Central Philippines
by Annabelle del Norte-Campos and Marivene Manuel-Santos

398
ARTICLE Ethnobotanical Survey and Nutritional Composition of Ficus pseudopalma Blanco (Moraceae)
by Librado A. Santiago, Anna Beatriz R. Mayor, and Joshua B. Arimado

401
ARTICLE Sequence analysis of the complete cathecol 1,2-dioxygenase gene in Acinetobacter baumannii Strain OS1
by A. Mittsu G. Sarmago and Cynthia T. Hedreyda

406
ARTICLE Characterization of alkaline-cooked quality protein maize as raw material for noodle processing
by Marie Anna Dominique R. Bibat, Olivia M. del Rosario, Lotis E. Mopera, Lilia S. Collado, and Floirendo P. Flores

413
SHORT COMMUNICATION Fluctuating asymmetry in genetically improved Nile Tilapia, Oreochromis niloticus (Linnaeus), strains in the Philippines
by Richard N. Muallil, Zubaida U. Basiao, Tereso A. Abella, and Luis Maria B. Garcia

420
ARTICLE Salt-plug estuarine circulation in Malampaya Sound, Palawan, Philippines
by Olivia C. Cabrera, Cesar L. Villanoy, Gil S. Jacinto, Lawrence Patrick C. Bernardo, Charissa M. Ferrera, Imelda B. Velasquez, and Rhodora V. Azanza

428
ARTICLE Evaluation of extended-spectrum beta-lactamase production in Escherichia coli clinical isolates from three hospitals in Luzon, Philippines
by Merlyn C. Cruz, Catherine S. Bacani, Alma B. Mendoza, and Cynthia T. Hedreyda

438
ARTICLE Evaluation of extended-spectrum beta-lactamase production in Escherichia coli clinical isolates from three hospitals in Luzon, Philippines
by Merlyn C. Cruz, Catherine S. Bacani, Alma B. Mendoza, and Cynthia T. Hedreyda

438
 

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VOLUME 6 NUMBER 1 (January to June 2013)
ARTICLE Occurrence and distribution of myxomycetes (plasmodial slime molds) in three provinces of Luzon Island, Philippines
by Rudolf V. Kuhn, Anton Oliver M. Javier, Coleen P. Rodillas, Christian M. Parra, Liwayway Hiyas M. Corpuz, Llewelyn S. Moron, and Thomas Edison E. dela Cruz

1
REVIEW Diversity of Conus peptides that target the nicotinic acetylcholine receptors
by Elsie C. Jimenez

7
ARTICLE A variation of discrete Silverman’s Game with varying payoffs
by Guido David and Richele S. De Asis

16
SHORT COMMUNICATION Initial assessment of parasite load in Clarias batrachus, Glossogobius giuris, and Oreochromis niloticus in Lake Taal (Philippines)
by Gil Cauyan, Jonathan Carlo Briones, Eugene De Leon, Julio Arsenio Gonong, Eduardo Omar Pasumbal, Ma. Czarina Isabel Pelayo, Manuel Anthony Piñera, and Rey Donne Papa

21
SHORT COMMUNICATION Effects of migration patterns on estimates of dispersal rates inferred from genotypic data: a simulation based study focused on the software STRUCTURE
by Maia H. Malonzo, Rachel G. Ravago-Gotanco, and Arturo O. Lluisma

29
ARTICLE Development of Hibiscus hybrids ‘Women in Public Service Series II’ and propagation studies on Hibiscus rosa-sinensis ‘Cynthia A. Villar’
by Pablito M. Magdalita and Reynold B. Pimentel

39
ARTICLE A new macrolide isolated from the endophytic fungus Colletotrichum sp.
by Melfei E. Bungihan, Mario A. Tan, Hiromitsu Takayama, Thomas Edison E. dela Cruz, and Maribel G. Nonato

57
ARTICLE Delta typing and analysis of alcohol tolerance genes (erg2, hsp104, sod2) in six local wine strains of Saccharomyces cerevisiae
by Cynthia T. Hedreyda and Zahara Joy A. Guiamal

74
ARTICLE Responses of rice (Oryza sativaline LX278) calli and seedlings to salinity treatment: Towards the development for salt tolerance
by Fredeslinda C. Evangelista, Rhodora R. Aldemita, and Lilian B. Ungson

84
ARTICLE Citrate-capped gold nanoparticles as colorimetric reagent for copper(II) ions
by Alan Rodelle M. Salcedo and Fortunato B. Sevilla III

90
ARTICLE Morphological and molecular characterization of some HAB-forming dinoflagellates from Philippine waters
by Deo Florence L. Onda, Garry Benico, Arielle F. Sulit, Paul Lorenzo Gaite, Rhodora V. Azanza, and Arturo O. Lluisma

97
ARTICLE Effect of organic matter amendment on the rhizosphere microbial community and root-infecting pathogens of aerobic rice variety Apo
by Charina Gracia B. Banaay, Casiana M. Vera Cruz, and Virginia C. Cuevas

107
ARTICLE Interaction of diatom silica with graphene
by Juliet Q. Dalagan and Erwin P. Enriquez

119
 

VOLUME 6 NUMBER 2 (July to December 2013)
ARTICLE Antimicrobial and antioxidant activities of fungal leaf endophytes associated with Pandanus amaryllifolius Roxb.
by Melfei E. Bungihan, Maribel G. Nonato, Siegfried Draeger, Scott Franzblau, and Thomas Edison E. dela Cruz

128
ARTICLE Mathematical analysis of bistability in reduced models of apoptosis
by Joseph Ray Clarence G. Damasco, Marian P. Roque, and Ricardo C. H. del Rosario

138
ARTICLE Immune response of Macrobrachium rosenbergii immersed in hot-water extract of Gracilaria edulis
by Mary Beth B. Maningas, Patrick G. Gonzalez, Maribon M. Obias, Rainier S. Pausanos, Jyacinth Lucille Y. Siapno, Jennifer R. Alambra, and Eldrin M. Abquina

147
ARTICLE Heptylprodigiosin induces apoptosis in Jurkat leukemia T cells via CD95 death receptor and evades antiapoptotic Bcl-2 and Bcl-xproteins
by Glory D. Ranches, Anita Rudy, Angelika Vollmar, Jortan O. Tun, and Gisela P. Concepcion

153
ARTICLE Digital photometric determination of protein using Biuret, Bradford, and bicinchoninic acid reagents
by Adonis A. Yanos, Marianne N. Bautista, Mark Rickard N. Angelia, and Ernesto J. del Rosario

168
ARTICLE First principle investigation of atomic hydrogen adsorption on Pd-doped MgB2
by Paul M. Abanador, Al Rey C. Villagracia, Nelson B. Arboleda Jr., and Melanie Y. David

176
ARTICLE Identification of design criteria for district cooling distribution network
by Gerardo L. Augusto, Alvin B. Culaba, and Raymond R. Tan

182
SHORT COMMUNICATION First report of Awaous ocellaris in goby fry or “ipon” fishery in Northern Luzon, Philippines
by Angelli Marie Jacynth M. Asis, Altair B. Agmata, Billy Joel Catacutan, Romeo Culasing, and Mudjekeewis D. Santos

198
EDITORIAL Typhoon Haiyan in the Philippines: Pushing the envelope
by Helen T. Yap

204
ARTICLE A mathematical model for the drying characteristics of microalgae (Tetraselmis sp.)
by Alvin B. Culaba, Raymond R. Tan, Jose Bienvenido Manuel M. Biona, Aristotle T. Ubando, Neil Stephen A. Lopez, Joel Q. Tanchuco, Soledad S. Garibay, Nieves A. Toledo, Caridad N. Jimenez, Ida G. Pahila, and Letty S. Ami

206
SHORT COMMUNICATION Species identification of “padas” from fermented fish paste or “bagoong” using DNA barcodes
by Altair B. Agmata, Angelli Marie Jacynth M. Asis, and Mudjekeewis D. Santos

220
FEATURE Hard work pays off: Getting to know Dr. Ernesto Domingo
by Jortan Tun

225
ARTICLE Multiple linear regression model of Shiga toxin inhibitory activity of dihydroquinazolinone derivatives of Retro-2cycl
by Liza T. Billones and Junie B. Billones

231
ARTICLE Correlation of total IgE, house-dust mite specific IgE and absolute eosinophils in an asthmatic pediatric population
by Maricar W. Ching, Jennifer Maries G. Yap, Kevin Carl P. Santos, Cesar M. Ong, and John Donnie A. Ramos

241
ARTICLE Physicochemical properties of bignay [Antidesma bunius (L.) Spreng.] wine at different stages of processing
by Ma. Desiree Belina-Aldemita, Veronica C. Sabularse, Erlinda I. Dizon, Wilma A. Hurtada, and Mary Ann O. Torio

249
 

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VOLUME 5 NUMBER 1 (January to June 2012)
ARTICLE Homology modelling and comparative docking analysis of two naturally occurring pancreatic glucokinase mutants
by Jose Isagani B. Janairo and Gerardo C. Janairo

1
FEATURE Hallmarks of a Genuine Scientist: An inspiration and example of "Paying it Forward"
by Leopold L. Ilag
 
7
ARTICLE Average-case analysis of Leapfrogging samplesort
by Eliezer A. Albacea

14
REVIEW Shift work research in the Philippines: Current state and future directions
by Jingky P. Lozano-Kühne, Maria Eliza R. Aguila,Gayline F. Manalang, Jr., Richard Bryann Chua, Roselyn S. Gabud, and Eduardo R. Mendoza

17
ARTICLE Species and endemicity status of the therapontid "Pigek", Mesopristes cancellatus(Cuvier, 1829) in the Philippines
by Benedict A. Maralit, Minerva Fatimae H. Ventolero, Rosario Segundina P. Gaerlan,Macmod D. Mamalangkap, Mudjekeewis D. Santos ERRATA

30
SHORT COMMUNICATION Binary (lipL32 and gyrB) gene marker analysis detects pathogenic Leptospira interrogans in a captured Rattus norvegicus in Marikina City, Philippines
by Vladimir Lennin A. Roque, Karen Joy B. Adiao, Marilen M. Parungao-Balolong, Ernesto C. Balolong Jr., and Francisco M. Heralde III

40
ARTICLE Cytotoxic isothiocyanates from Moringa oleifera lam seeds
by Consolacion Y. Ragasa, Ruel M. Levida, Ming-Jaw Don, and Chien- Chang Shen

46
EDITORIAL Climate change and disaster science in the Philippine setting
by Helen T. Yap, Editor
 
53
FEATURE Academician Evelyn Mae Tecson-Mendoza transcending biochemistry beyond borders
by Roberta N. Garcia
 
55
REVIEW Anatomy of the antibody molecule: A continuing analysis based on high-resolution crystallographic structures
by Jo Erika T. Narciso, Iris Diana C. Uy, April B. Cabang, Jenina Faye C. Chavez, Juan Lorenzo B. Pablo, Gisela P. Padilla-Concepcion, and Eduardo A. Padlan

63
ARTICLE Partial gene sequence and characterization of EDEN-1, a major water-soluble protein from the economically important alga Eucheuma denticulatum
by Paulina B. Suarez-Aspilla, Mailyn M. Terrado, Maria Cristina A. Dancel, Giuseppe C. Zuccarello, and Nina Rosario L. Rojas
90
 

VOLUME 5 NUMBER 2 (July to December 2012)
ARTICLE Macroinvertebrate composition, diversity and richness in relation to the water quality status of Mananga River, Cebu, Philippines
by Mary Joyce L. Flores and Macrina T. Zafaralla

103
SHORT COMMUNICATION Design of possibly useful vaccines against human immunodeficiency virus 1
by Eduardo A. Padlan

114
ARTICLE Dynamics of non-equilibrium quasiparticles in the superconducting cold-electron bolometer (SCEB)
by Ian Jasper A. Agulo

118
ARTICLE Towards antituberculosis drugs: Virtual screening for potential inhibitors of pantothenate synthetase of Mycobacterium tuberculosis
by Vivien Cherie C. Uy and Junie B. Billones

122
ARTICLE Phase synchronization of electroencephalographic signals in the different frequency bands
by M. C. Faustino, R. P. Serquiña, P. E. Rapp, and A. M. Albano

131
ARTICLE Ascaris suum infective eggs upregulate IL-4, 5 and 10 in BALB/c mice
by Maria Ruth B. Pineda and John Donnie A. Ramos

139
FEATURE Marine reserves as tools of fishery management and conservation of biodiversity in the Philippines
by Emily Layos

150
ARTICLE Disease identification and in situ screening of gumamela (Hibiscus rosa-sinensis Linn) germplasm and hybrids to leaf anthracnose for disease resistance breeding
by Cecilia B. Pascual and Pablito M. Magdalita

158
ARTICLE Analysis of age-structured malaria transmission model
by Joel M. Addawe and Jose Ernie C. Lope

169
ARTICLE Towards biologically inspired fuelcell electrocatalysts: Electrochemistry of a diiron hydrogenase mimic
by Jean Sanabria-Chinchilla, Tianbiao Liu, Christine M. Thomas, Brett Savoie, Marcetta Y. Darensbourg, and Manuel P. Soriaga

187
FEATURE Learning it from Manny
by Jack Hess L. Baricuatro

194
ARTICLE Two strains of Gordonia terrae isolated from used engine oil contaminated soil utilize short- to long-chain n-alkanes
by Michael Angelo C. Nicdao and Windell L. Rivera

199
ARTICLE Isolation of thermophilic bacteria (Bacillus and Ureibacillus) and amplification of genes for selected enzymes
by Cynthia T. Hedreyda, John Jewish A. Dominguez, and Karen Rosal

209
ARTICLE New combinations in Rothmannia (Rubiaceae) and the establishment of the genus in the Philippine flora
by Jayson G. Chavez, Ulrich Meve, and Grecebio Jonathan D. Alejandro
216
 

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VOLUME 4 NUMBER 1 (January to June 2011)
REVIEW History of the biodiversity and limno-ecological studies on Lake Taal with notes on the current state of Philippine limnology
by Rey Donne S. Papa and Augustus C. Mamaril Sr.
 
1
ARTICLE A matrix population model of the "janitor fish" Pterygoplichthys (Pisces: Loricariidae) in the Marikina River, Luzon island,Philippines and the possibility of controlling this invasive species
by Benjamin Vallejo, Jr. and Kristine A. Soriano
 
11
ARTICLE STM and DFT studies of anion adsorption at well-defined surfaces: Pd(111) in sulfuric acid solution
by Alnald C. Javier, Youn-Geun Kim, Joseph B. Soriaga, Perla B. Balbuena and Manuel P. Soriaga
 
18
REVIEW Development and utilization of the PhilRice Genebank
by Gabriel O. Romero, Roel C. Rabara, Evelyn B. Gergon, Ma. CristinaV. Newingham, Celia L. Diaz, Marilyn C. Ferrer, and Eric S. Nazareno
 
24
ARTICLE Effect of dry-on, suffocation-based treatment on the prevalenceof pediculosis among school children in Calagtangan Village, Miag-ao, Iloilo
by Adrienne Marrie S. Bugayong, Karla Teresa S. Araneta, Jennifer C.Cabanilla, Christian Era U. Gayatgay, Ernest Jan T. Nufuar, Krystal Hope S. Rufino, Mary Ann C. Caro, and Philip Ian Padilla
 
33
EDITORIAL Philippine Science Letters – on the move
by Eduardo A. Padlan and Gisela P. Padilla-Concepcion, Editors
 
38
ARTICLE Effect of pretreatment and geometry on the thermophysical properties of raw ubi (Dioscorea alataL.)
by Cresel F. Noche, Dennis V. Cantre, and Floirendo P. Flores

40
FEATURE The Milky Way of a Star Scientist: Carlito B. Lebrilla
by Ronie J. Calugay
 
46
ARTICLE Effects of engineering charged amino acids in the CH3 domains on antibody heavy chain dimerization
by Maria Aiko Angela A. Diaz, Eduardo A. Padlan, Ameurfina D. Santos
  
48
FEATURE Alfonso Albano: A Distinguished scientist in measures of non-linear dynamics and an exemplary educator
by Manuela Tarroja-Keller
 
56
ARTICLE Factors promoting coral-algal transition in coral transplantation experiments
by Helen T. Yap, Reverie Alvarez-Molina, and Caryl S. Benjamin
 
60
ARTICLE Isolation and sequence analysis of the full-length toxR gene of type strain Vibrio campbellii and use of the toxR gene sequence to evaluate variation and relatedness with other Vibrio species
by Fabini D. Orata and Cynthia T. Hedreyda
70
 

VOLUME 4 NUMBER 2 (July to December 2011)
ARTICLE Novel glycerol-crosslinked poly(acrylic acid) hydrogel for encapsulation and release of benzocaine
by Angela Lisandra S. Lee, Gayzen A. Ordoñez, and Soma Chakraborty
 
81
FEATURE To find CJ, make way for CJ
by Angel C. de Dios
 
88
ARTICLE Probiotics from Philippine dairy products are bactericidal for pathogens with transferable multiple drug resistance
by Mary Catherine A. Mercado and Esperanza C. Cabrera
 
91
ARTICLE Total synthesis of dubiusamine C, a plausible minor alkaloid in Pandanus dubius
by Mario A. Tan, Noriyuki Kogure, Mariko Kitajima, and Hiromitsu Takayama
 
98
ARTICLE DNA barcodes of the suckermouth sailfin catfish Pterygoplichthys (Siluriformes: Loricariidae) in the Marikina River system, Philippines: Molecular perspective of an invasive alien fish species
by Joycelyn C. Jumawan, Benjamin M. Vallejo, Annabelle A. Herrera, Corazon C. Buerano, and Ian Kendrich C. Fontanilla
 
103
ARTICLE Amplification and sequence analysis of the luxA gene in the non-luminescent type strain Vibrio campbellii NBRC 15631
by Cynthia T. Hedreyda and Fabini D. Orata
 
114
ARTICLE Microsatellite and RAPD analysis of six local wine strains of Saccharomyces cerevisiae
by Zahara Joy A. Guiamal and Cynthia T. Hedreyda
122
 

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VOLUME 3 NUMBER 1 (January to June 2010)  
FEATURE Oscar H. Ibarra: Computer scientist par excellence
by Michael A. Palis
 
1
ARTICLE Prevalence of community-acquired methicillin-resistant Staphylococcus aureus from inmates of the Manila City Jail, characterization for SCCmec type and occurrence of Panton-Valentine leukocidin gene
by Esperanza C. Cabrera, Dahlia Teresa Ramirez-Argamosa, and Roslyn D.M. Rodriguez
 
4
LETTER TO THE EDITORS Birth, death, and salvation of journals
by Raul K. Suarez

13
FEATURE National Scientist Lourdes Jansuy Cruz: From rice to Conus research — the journey
by Evelyn Mae Tecson-Mendoza

15
ARTICLE The Indo-Pacific Gemmula species in the subfamily Turrinae: Aspects of field distribution, molecular phylogeny, radular anatomy and feeding ecology
by Francisco M. Heralde III, Yuri I. Kantor, Mary Anne Q. Astilla, Arturo O. Lluisma, Rollan Geronimo, Porfirio M. Aliño, Maren Watkins, Patrice Showers Corneli, Baldomero M. Olivera, Ameurfina D. Santos, and Gisela P. Concepcion

21
ARTICLE Life cycle costing based design optimization and viability analysis of the adoption of the hybrid technology in Philippine tricycles
by Jose Bienvenido Manuel M. Biona, and Alvin B. Culaba
 
35
ARTICLE Turris babylonia; re-evaluation of a species complex and description of Turris assyria, new species
by Baldomero M. Olivera, Romell A. Seronay, and Alexander E. Fedosov

46
ARTICLE Genotypic differences in morphology and ultrastructures of callus derived from selected rice varieties
by Josefina O. Narciso and Kazumi Hattori

59
ARTICLE Optimization of failure-tolerant workspaces for redundant manipulators
by Rodrigo S. Jamisola, Jr.

66
ARTICLE Cadmium binding ability of the blue-green alga Hapalosiphon welwitschii Nägel under controlled conditions
by Margaret C. de Guzman and Ernelea P. Cao

76
FEATURE Getting to know Kelvin
by Alfredo Mahar Francisco A. Lagmay

87
REVIEW Deforestation, swidden agriculture and Philippine biodiversity
by Raul K. Suarez and Percy E. Sajise

91
ARTICLE Zymography-based assay for screening potential anti-gelatinase agents using Serratia marcescens serralysin
by Jolleen N. Balitaan, Holger Steinbrenner, and Maria C. Ramos

100
ARTICLE A partial expressed sequence tag (EST) library of the economically important red alga Eucheuma denticulatum (N. L. Burham) F. C. Collins and Hervey
by Paulina S. Aspilla, Anna Angela Camille B. Antonio, Giuseppe C. Zuccarello, and Nina Rosario L. RojasERRATA

109
ARTICLE Morphogenesis of anisotropic gold nanostructures stabilized the greener ionic liquid 1-butyl-3- methylimidazolium lauryl sulfate
by Judy M. Obliosca, Ian Harvey J. Arellano, Michael H. Huang, and Susan D. Arco

121
ARTICLE Analysis of colonic histopathological images using pixel intensities and Hough Transform
by Laurence A. Gan Lim, Raouf N.G. Naguib, Elmer P. Dadios, and Jose Maria C. Avila

128
 
 
VOLUME 3 NUMBER 1 (July to December 2010)  
ARTICLE Effects of medium replenishment and acclimatization techniques on growth and survival of embryo cultured coconut seedlings
by Pablito M. Magdalita, Olivia P. Damasco, and Stephen W. Adkins

1
NEWS The 30th Annual Meeting and Symposium of the Philippine American Academy of Science and Engineering
Onofre T. De Jesus and Maria Luisa A. Virata-Theimer

10
FEATURE Rigoberto C. Advincula: Multi-awarded and distinguished Filipino scientist making an impact in polymers and nanomaterials
by Roderick Borong Pernites

13
EDITORIAL Philippine Science Letters – now on its third year
by Eduardo A. Padlan and Gisela P. Padilla – Concepcion, Editors

17
ARTICLE Antibacterial activities of fruticose lichens collected from selected sites in Luzon Island, Philippines
by Krystle Angelique A. Santiago, Jayne Nicholei C. Borricano, Joecela N. Canal, Denisse Marie A. Marcelo, Myleen Claire P. Perez, and Thomas Edison E. dela Cruz

18
ARTICLE Amplified fragments of ornithine decarboxylase gene, toxR, and an unknown gene marker could distinguish strains of Vibrio harveyi and Vibrio campbellii implicated in shrimp disease
by Fabini D. Orata and Cynthia T. Hedreyda

30
ARTICLE A method for designing molecules for use in directing the antibody response to a chosen region of a protein antigen
by Eduardo A. Padlan

36
ARTICLE Synergistic in vitro cytotoxicity of adociaquinone B and heptyl prodigiosin against MCF-7 breast cancer cell line
by Zenaida P. Bojo, Cyril D. Deaño, Sonia D. Jacinto, and Gisela P. Concepcion

48
ARTICLE Detecting genes inserted into genetically modified Zea mays L. Yieldgard® NK603 using multiplex polymerase chain reaction
by Cynthia T. Hedreyda and Jennifer L. Roxas

59
ARTICLE Selection and design of new primers for multiplex polymerase chain reaction (PCR) detection of transgenes in genetically modified (GM) soybean (Glycine max L.) Roundup Ready Soybean GTS 40-3-2
by Cynthia T. Hedreyda and Jennifer L. Roxas

67
SHORT COMMUNICATION DNA barcoding of the white-collared kingfisher Todiramphus chloris (Boddaert 1783) (Alcedinidae) using the mitochondrial cytochrome c oxidase subunit I gene
by Adrian U. Luczon, Abdel Hadi M. Mohammad Isa, Jonas P. Quilang, Perry S. Ong, and Ian Kendrich C. Fontanilla

74
FEATURE Bienvenido Ochoa Juliano: Shaping the world’s evolution through rice research
by Carla A. Omaga
78
 


2009   2017 · 2015 · 2014 · 2013 · 2012 · 2011 · 2010 · 2009 · 2008 · top
     
VOLUME 2 NUMBER 1 (January to December 2009)
NEWS The 35th Annual PSBMB Convention: A Resounding call for greater collaboration in biosciences
by Karen Manalastas
 
1
FEATURE Pedro A. Jose: Searching for genes that cause the increase in blood pressure with large salt (NaCl) intake
by Van Villar
 
5
REVIEW Genetic fingerprinting: Advancing the frontiers of crop biology research
by Gabriel Romero, Cheryl Adeva, and Zosimo Battad II
 
8
FEATURE Rhodora V. Azanza: The Red Tide Lady (An accomplished Filipina scientist)
by Iris Baula
 
14
REVIEW Systems Biology: Its past, present and potential
by Eduardo R. Mendoza
 
16
FEATURE Baldomero M. Olivera: Pushing the frontiers of neuroscience through venomous marine snails
by Karl Cabalteja
 
35
ARTICLE Characterization of Blo t 11 monoclonal antibodies with constant region mutations
by John Donnie A. Ramos, Nge Cheong, and Kaw Yan Chu
 
38
NEWS The 29th Annual Meeting of the Philippine-American Academy of Science and Engineering
by Carla Bianca Victorio
 
49
EDITORIAL Philippine Science Letters – now on its second year
by Eduardo A. Padlan and Gisela P. Padilla – Concepcion, Editors
 
55
FEATURE Caesar Saloma: Promoter of Philippine scientific culture (scientist, mentor, leader)
by Erika Fille T. Legara
 
57
REVIEW Conantokins: From “sleeper” activity to drug development
by Elsie C. Jimenez
 
60



2008   2017 · 2015 · 2014 · 2013 · 2012 · 2011 · 2010 · 2009 · 2008 · top
     
VOLUME 1 NUMBER 1 (January to December 2008)  
EDITORIAL Proud of our science – and our scientists
by Eduardo A. Padlan, Editor-in Chief
 
1
FEATURE The impact of Ed Gomez
by Miguel Azcuna
 
2
NEWS The 28th Annual Meeting of the Philippine American Academy of Science and Engineering
by Leah M. Tolosa and Maria Luisa A. Virata-Theimer
 
4
REVIEW Visualizing and modifying objects at the nanometer length scales
by Romel D. Gomez
 
6
ARTICLE De-antigenization of immunodominant epitopes: A strategy for designing vaccines against constantly mutating pathogens and other applications
by Eduardo A. Padlan
 
9
ARTICLE A new species of Gemmula, Weinkauff 1875; Evidence of two clades of Philippine species in the genus Gemmula
by Baldomero M. Olivera, David R. Hillyard, and Maren Watkins
 
11
FEATURE Jose B. Cruz, Jr.: Excellence in engineering design of complex systems
by Joeriggo M. Reyes
 
16
REVIEW Time series analysis, or the quest for quantitative measures of time dependent behavior
by Alfonso M. Albano, Peter D. Brodfuehrer, Christopher J. Celluci, Xenia T. Tigno, and Paul E. Rapp
 
18
ARTICLE Estimating the rarity of birds and its ecological context in the University of the Philippines Diliman Campus
by Benjamin Vallejo Jr. and Alexander B. Aloy
 
32
FEATURE Asuncion K. Raymundo: Peering into microbes and pioneering molecular microbiology in the Philippines
by Ediwn N. Camaya and Evanjill Alcantara
 
37