Submissions from 2019

Fabrication of a bismuth nanoparticle/Nafion modified screen-printed graphene electrode for: In situ environmental monitoring, Shirley T. Palisoc, Vince Aaron Sow, and Michelle T. Natividad

Determination of heavy metals in herbal food supplements using bismuth/multi-walled carbon nanotubes/Nafion modified graphite electrodes sourced from waste batteries, Shirley T. Palisoc, Remuel Isaac M. Vitto, and Michelle T. Natividad

Ab Initio Study of Absorption Resonance Correlations between Nanotubes and Nanoribbons of Graphene and Hexagonal Boron Nitride, Renebeth B. Payod and Vasil A. Saroka

Review on the preparation and properties of clay-based nanocomposites with covalently-bound polymer architecture, David P. Penaloza

Preparation and characterization of clay-polymer nanocomposite having covalentlybound poly(norbornenes) with pendant cholesterols, David Penuliar Penaloza Jr. and Thomas Andrew Patrick Seery


Chemical constituents of Exoecaria agallocha Linn., Judy Perez, Chien Chang Shen, and Consolacion Y. Ragasa

Quantifying the organization of urban elements through the statistical distributions of their spatial spreading metrics, Camille D. Perlada, Alfiero K. Orden II, Michelle T. Cirunay, and Rene C. Batac


Triterpenes and sterols from Terminalia foetidissima Griff, Consolacion Y. Ragasa, Renz D. Gumafelix, Vincent Antonio S. Ng, and Drexel H. Camacho

Chemical constituents of moss macromitrium orthostichum Nees ex Schwägr, Consolacion Y. Ragasa, Maria Carmen S. Tan, Virgilio C. Linis, and Chien Chang Shen

Allantoin accumulation through overexpression of ureide permease1 improves rice growth under limited nitrogen conditions, Mark Christian Felipe R. Redillas, Seung Woon Bang, Dong Keun Lee, Youn Shic Kim, Harin Jung, Pil Joong Chung, Joo Won Suh, and Ju Kon Kim

DFT study on the effect of proximal residues on the: Mycobacterium tuberculosis catalase-peroxidase (katG) heme compound I intermediate and its bonding interaction with isoniazid, Yves Ira A. Reyes and Francisco C. Franco

Theoretical insights on the binding of isoniazid to the active site residues of mycobacterium tuberculosis catalase-peroxidase, Yves Ira A. Reyes, Gerardo C. Janairo, and Francisco C. Franco Jr.

Biological network analysis and subnetwork extraction tool, Danielle M. Rodriguez, Angelyn Lao, and Geoffrey A. Solano

First principles study of H2 adsorption on Ni-decorated silicene, Kurt Irvin M. Rojas, Al Rey C. Villagracia, Shaira Jehsarine C. Narido, Joaquin Lorenzo V. Moreno, and Nelson B. Arboleda Jr.

Interband transitions in narrow-gap carbon nanotubes and graphene nanoribbons, V. A. Saroka, R. R. Hartmann, and M. E. Portnoi

Surface morphological and wetting characterization of the hydrophobic and superhydrophobic leaves of Pistia stratiotes L., Salvinia molesta D.Mitch., Ananas comosus (L.) Merr. and Dyckia platyphylla L.B. Smith for bioinspired oil adsorbent materials, Mark Louie T. Silvestre, Anna Rose C. Zambrano, Virgilio C. Linis, and Jose Isagani B. Janairo

A second-order kinetic model on the survival profile of Candida albicans in biofilms, Derick Erl P. Sumalapao, F. M. D. Alegre, P. B. D. Salazar, N. R. Villarante, A. C. Gonzaga, and N. G. Gloriani

Frequency of typhoon occurrence accounts for the Poisson distribution of human leptospirosis cases across the different geographic regions in the Philippines, Derick Erl P. Sumalapao, Benjamin Kyle M. Del Rosario, Lara Beatrice L. Suñga, Catherine C. Walthern, and Nina G. Gloriani

Hierarchically weighted principal component analysis evaluation of antifungal azoles inhibitory potency on lanosterol-14α-demethylase in Candida albicans, Derick Erl P. Sumalapao and N. G. Gloriani

In vitro resistance pattern of selected antifungal azoles against Candida albicans biofilms on silicone nasogastric tube, Derick Erl P. Sumalapao, Pauline Bridgette D. Salazar, Frederico Martin D. Alegre, Nelson R. Villarante, and Nina G. Gloriani

Complex balanced equilibria of weakly reversible power law kinetic systems, Dylan Antonio S.J. Talabis, Eduardo R. Mendoza, and Editha C. Jose

Mycetia suedixieana (Rubiaceae), a new species of Argostemmateae endemic to the Philippines, Danilo N. Tandang, Jorge Anton D. Ordas, Edwin R. Tadiosa, Cecilia I. Banag-Moran, and Grecebio Jonathan D. Alejandro

The anti-venom potential of Andrographis paniculata (Burm.f.) Nees roots and its constituent skullcapflavone I, Maria Carmen S. Tan

Antioxidant, cytotoxicity, and antiophidian potential of Alstonia macrophylla bark, Maria Carmen S. Tan, Mary Stephanie S. Carranza, Virgilio C. Linis, Raymond S. Malabed, and Glenn G. Oyong

The anti-venom potential of Andrographis paniculata (Burm.f.) nees roots and its constituent skullcapflavone I, Maria Carmen S. Tan, Raymond S. Malabed, Francisco C. Franco Jr., Yves Ira A. Reyes, Daisylyn Senna Tan, Glenn G. Oyong, Chien Chang Shen, and Consolacion Y. Ragasa

Performance evaluation of Ag/SnO2 nanocomposite materials as coating material with high capability on antibacterial activity, Eduardo B. Tibayan, Muhammad Akhsin Muflikhun, Vipin Kumar, Christine Fisher, Al Rey C. Villagracia, and Gil Nonato C. Santos

First principles Investigation on the elastic properties of Mg, Ca, K-decorated planar aluminene, Al Rey Villagracia, Dhan Shemaiah Bayasen, Gian Ross Pedrosa, Audrey Rillera, Hui Lin Ong, Alvin B. Culaba, Melanie David, and Nelson Arboleda

Investigation on water adsorption on 3-crosslinked circular polyacrylamide membrane using ab initio, molecular dynamics and Monte Carlo calculations for dewatering microalgae, Al Rey Villagracia, Melanie David, Nelson B. Arboleda, H. L. Ong, R. Doong, Alvin B. Culaba, J. Chang, and W. Chen

First principles investigation on H2 adsorption on the pristine 2-dimensional hexagonal aluminum, Al Rey Villagracia, H. L. Ong, Melanie David, and Nelson Arboleda

Elastic properties of B, C, N-decorated on planar aluminene using density functional theory, Al Rey Villagracia, Gian Ross Pedrosa, Dhan Shemaiah Bayasen, Audrey Rillera, Hui Lin Ong, Alvin B. Culaba, Melanie David, and Nelson Arboleda

Structural stability analysis of models of dopamine synthesis and d1 receptor trafficking in RPT Cells using CRNT, John Justine S. Villar, Patrick Vincent N. Lubenia, Eduardo R. Mendoza, and Carlene Perpetua P. Arceo

Submissions from 2018

Identification of a species diagnostic character for instar and juvenile mud crabs (Genus Scylla), Chona Camille Vince Cruz Abeledo, Kenbert Ting, and Ma. Carmen Ablan Lagman

Screening of silver-tolerant bacteria from a major Philippine landfill as potential bioremediation agents, Joan S. Adriano, Glenn G. Oyong, Esperanza C. Cabrera, and Jose Isagani B. Janairo

Analysis of heavy metals in the human hair to establish the e-waste toxicity among the Filipino informal recyclers located at various e-waste dumpsites in and around Manila, Philippines, Zeba F. Alam, Carlos Leandro J. Ang, and Isabella V. Bondoc

Spatial characterization of black carbon mass concentration in the atmosphere of a Southeast Asian megacity: An air quality case study for Metro Manila, Philippines, Honey Dawn Alas, Thomas Müller, Wolfram Birmili, Simonas Kecorius, Maria Obiminda Cambaliza, James Bernard B. Simpas, Mylene Cayetano, Kay Weinhold, Edgar A. Vallar, Maria Cecilia Galvez, and Alfred Wiedensohler

Stable sulfur isotope measurements to trace the fate of SO2 in the Athabasca oil sands region, Neda Amiri, Roghayeh Ghahremaninezhad, Ofelia Rempillo, Travis W. Tokarek, Charles A. Odame-Ankrah, Hans D. Osthoff, and Ann Lise Norman

Reactant subspaces and kinetics of chemical reaction networks, Carlene Perpetua P. Arceo, Editha C. Jose, Angelyn R. Lao, and Eduardo R. Mendoza

Understanding the formation of midgap states in GaAs(001)-β2(2×4) with surface defects based on density functional theory, Dhonny Bacuyag, Melanie David, Mary Clare Escano, and Masahiko Tani

First-principles study of structural, electronic, and optical properties of surface defects in GaAs(001) - β 2(2x4), Dhonny Bacuyag, Mary Clare Sison Escaño, Melanie David, and Masahiko Tani

Increased vitamin B5 uptake capacity of ultrasonic treated milled rice: A new method for rice fortification, Aldrin P. Bonto, Ken Sammuel I. Camacho, and Drexel H. Camacho

Chemical constituents of Hoya madulidii, Melissa Borlagdan, Fernando B. Aurigue, Chien Chang Shen, and Consolacion Y. Ragasa

Facile synthesis of biologically derived fluorescent carbon nanoparticles (FCNPs) from an abundant marine alga and its biological activities, Mariatheresa F. Calangian, Abigail B. Ildefonzo, Vanessa Kate S. Manzano, Genesis Julyus T. Agcaoili, Rey Joseph J. Ganado, Allan Christopher C. Yago, Eduardo R. Magdaluyo, Ross D. Vasquez, and Francisco C. Franco Jr.

On the existence of calendar anomalies and persistence in the daily returns of the PSEi, Kristine Joy E. Carpio

Detection and distribution of Wolbachia endobacteria in Culex quinquefasciatus populations (Diptera : Culicidae) from Metropolitan Manila, Philippines, Thaddeus Carvajal, Jayson Dale Capistrano, Kazuki Hashimoto, Kristin Joyce Go, Maria Angeline Isabelle Cruz, Monique Johanne Lourdee Martinez, Vincent Stefano Tiopianco, Divina Amalin, and Kozo Watanabe

Machine learning methods reveal the temporal pattern of dengue incidence using meteorological factors in Metropolitan Manila, Philippines, Thaddeus M. Carvajal, Katherine M. Viacrusis, Lara Fides T. Hernandez, Howell T. Ho, Divina M. Amalin, and Kozo Watanabe

Assessing the composition of 19th century lime mortars from a mission chapel in the former Hacienda de San Isidro de Mariquina Philippines, Jan-Michael C. Cayme, Renz Matthew L. Aurellano, Carmen Luisa P. Cabral, and Gellyn Ann R. Alonzo

Heterojunctions of silver-iron oxide on graphene for laser-coupled oxygen reduction reactions, Wei Quan Chen, Min Chuan Chung, Joey Andrew A. Valinton, David P. Penaloza, Shiow Huey Chuang, and Chun Hu Chen

On the asymptotic spectral distribution of Cartesian powers of line graphs of complete graph, Monica Carlita G. David, Catherine L. Señires, and John Vincent S. Morales


Cytotoxic prenylflavanones from philippine stingless bee (Tetragonula biroi Friese) nests, Mariquit M. De Los Reyes, Glenn G. Oyong, Virgilio D. Ebajo, Chien Chang Shen, and Consolacion Y. Ragasa

Cytotoxic compounds from Wrightia pubescens (R.Br.), Mariquit De Los Reyes, Glenn Oyong, Vincent S. Ng, Chien Chang Shen, and Consolacion Y. Ragasa

Establishing a blueprint for nature-based products development and conservation for the Philippines, Bernie S. Fabito and Emeliza R. Yabut

Size structure and possible bleaching susceptibility of mushroom corals in the Philippines following a bleaching event, Giannina Nicole R. Feliciano, Leah Marie F. Gagalac, Aurelia Maria Cecilia G. Nava, and Wilfredo Y. Licuanan

Is gardening corals of opportunity the appropriate response to reverse Philippine reef decline?, Giannina Nicole R. Feliciano, Thea Philea I. Mostrales, Ara Kim M. Acosta, Katrina Luzon, John Christopher A. Bangsal, and Wilfredo Y. Licuanan

Constructing a word similarity graph from vector based word representation for named entity recognition, Miguel Feria, Juan Paolo Balbin, and Francis Michael Bautista

A deficiency-one algorithm for power-law kinetic systems with reactant-determined interactions, Noel T. Fortun, Eduardo R. Mendoza, Luis F. Razon, and Angelyn R. Lao

Computational study on optoelectronic property tuning of oligothiophenes via chemical modifications for solar cell applications, Francisco C. Franco Jr.

Corrosion and leaching behaviours of Sn-0.7Cu-0.05Ni lead-free solder in 3.5 wt.% NaCl solution, Jan Ervin C. Guerrero, Drexel H. Camacho, Omid Mokhtari, and Hiroshi Nishikawa

Using Google trends to examine the spatio-temporal incidence and behavioral patterns of dengue disease: A case study in metropolitan Manila, Philippines, Howell T. Ho, Thaddeus M. Carvajal, John Robert Bautista, Jayson Dale R. Capistrano, Katherine M. Viacrusis, Lara Fides T. Hernandez, and Kozo Watanabe

Reviving a scientific journal: Challenges and strategies, Jose Isagani Janairo

Volatile chemical profile of cacao liquid smoke, Jose Isagani B. Janairo and Divine Medina Amalin

Assessing and ranking ASEAN academic journals, Jose Isagani B. Janairo and Gerardo C. Janairo

A machine learning approach in predicting mosquito repellency of plant-derived compounds, Jose Isagani B. Janairo, Gerardo C. Janairo, and Frumencio F. Co

Synergic strategies for the enhanced self-assembly of biomineralization peptides for the synthesis of functional nanomaterials, Jose Isagani B. Janairo, Tatsuya Sakaguchi, Kenta Mine, Rui Kamada, and Kazuyasu Sakaguchi

Multiple antimicrobial resistance of Escherichia coli isolates from Nile tilapia sold in wet markets in Metro Manila and the conjugative transferability of the drug resistance, Mark Anthony I. Jose and Esperanza C. Cabrera

Activity pattern of school/university tenants and their family members in Metro Manila – Philippines, Simonas Kecorius, Everlyn Gayle Tamayo, Maria Cecilia Galvez, Leizel Madueño, Grace Betito, Mylene Gonzaga Cayetano, Edgar Vallar, and Alfred Wiedensohler

Spin-dependent O2 binding to hemoglobin, Daiichi Kurokawa, Jessiel Siaron Gueriba, and Wilson Agerico Diño

The Spratly Islands, Ma. Carmen A. Lagman

Transmission dynamics and control strategies assessment of avian influenza A (H5N6) in the Philippines, Hanl Lee and Angelyn Lao

Photocathode chromophore-catalyst assembly via layer-by-layer deposition of a low band-gap isoindigo conjugated polyelectrolyte, Gyu Leem, Hayden T. Black, Bing Shan, Jose P. O. Bantang, Thomas J. Meyer, John R. Reynolds, and Kirk S. Schanze

The Philippines, Wilfredo Y. Licuanan, Reine W. Cabreira, and Porfirio M. Aliño

Hydrogen adsorption of Ti-decorated boron nitride nanotube: A density functional based tight binding molecular dynamics study, Michael Rivera Mananghaya, Gil Nonato C. Santos, and Dennis Yu

Morphological characterization of emerging cercariae among lymnaeid snails from barangay cawongan,padre garcia,batangas,philippines, Gregorio L. Martin and Esperanza C. Cabrera

Trace metal analysis of organic vegetables sold in some supermarkets in Manila, Philippines, Vicente Luis M. Medenilla, Neil Adri, and Rafael A. Espiritu

Positive equilibria of weakly reversible power law kinetic systems with linear independent interactions, Eduardo R. Mendoza, Dylan Antonio S.J. Talabis, and Editha C. Jose

In vitro cytotoxic potential of yacon (Smallanthus sonchifolius) against HT-29, MCF-7 and HDFn cell lines, Rachelle P. Mendoza, Warren S. Vidar, and Glenn G. Oyong

Frankliniella intonsa (Trybom), a thrips species infesting strawberry in La Trinidad, Benguet Province, Philippines, Cynthia B. Mintu and Cecilia P. Reyes

Swelling behavior and chemical stability of chitosan/nanocellulose biocomposites, Muhammad Safwan Mohaiyiddin, Hui Lin Ong, Muhammad Bisyrul Hafi Othman, Nurhidayatullaili Muhd Julkapli, Al Rey C. Villagracia, and Hazizan Md Akil

Asymptotic joint spectra of Cartesian powers of strongly regular graphs and bivariate Charlier–Hermite polynomials, John Vincent S. Morales, Nobuaki Obata, and Hajime Tanaka


Detection of azole resistance and ERG11 point mutations in Candida albicans isolates from tertiary hospitals in the Philippines, L. S. Moron and Esperanza C. Cabrera

Short communication: Macrofungal diversity in Mt. Makiling forest reserve, Laguna, Philippines: With floristic update on roadside samples in Makiling Botanic Gardens (MBG), Alma E. Nacua, Hazel Joy M. Pacis, Jeffrey R. Manalo, Cariza Jane M. Soriano, Nikki Rose N. Tosoc, Robert Padirogao, Ken Joseph E. Clemente, and Custer C. Deocaris

Comparative Biology of Cycad Pollen, Seed and Tissue - A Plant Conservation Perspective, J. Nadarajan, E. E. Benson, P. Xaba, K. Harding, A. Lindstrom, J. Donaldson, C. E. Seal, D. Kamoga, E. M.G. Agoo, N. Li, E. King, and H. W. Pritchard

Primary education in Vietnam and pupil online engagement, Quynh Thi Nguyen, Raouf N. G. Naguib, Ashish K. Das, Michail Papathomas, Edgar A. Vallar, Nilmini Wickramasinghe, Gil Nonato C. Santos, Maria Cecilia D. Galvez, and Viet Anh Nguyen

Diversity and biocontrol potential of dominant ants associated with the cacao mirid bug, Helopeltis bakeri poppius (Hemiptera: Miridae) in a selected cacao farm in Sto. Tomas, Batangas, Philippines, Anthony Ian G. Pag-Ong, Alberto T. Barrion, and Divina M. Amalin


Silver/bismuth/Nafion modified pencil graphite electrode for trace heavy metal determination, Shirley T. Palisoc, Ella Mae Espique, Alein Marimel Ribay, Steffanie Sy, Kyelle Ardelle Tan, Nico De Jesus, Marissa Noel, and Michelle T. Natividad

Voltammetric determination of lead and cadmium in vegetables by graphene paste electrode modified with activated carbon from coconut husk, Shirley T. Palisoc, Leonard Cedrick D. Estioko, and Michelle T. Natividad


Silver nanoparticle modified graphene paste electrode for the electrochemical detection of lead, cadmium and copper, Shirley T. Palisoc, Eldrin T. Lee, Michelle T. Natividad, and Lotis R. Racines

Highly sensitive AgNP/MWCNT/Nafion modified GCE-based sensor for the determination of heavy metals in organic and non-organic vegetables, Shirley T. Palisoc, Michelle T. Natividad, Nico De Jesus, and Joshua Carlos

Chemical constituents of cymodocea rotundata asch. And schweinf, Judy D.V. Perez, Chien Chang Shen, and Consolacion Y. Ragasa


Triterpenes and sterol from Tabernaemontana pandacaqui poir, Consolacion Y. Ragasa, Reyster O. Santos, Andrea Louise M. Cañete, Maria Carmen S. Tan, and Chien Chang Shen

Sterols from lentinus tigrinus, Consolacion Y. Ragasa, Maria Carmen S. Tan, Ma. Ellenita De Castro, Mariquit M. De Los Reyes, Glenn G. Oyong, and Chien Chang Shen

A triterpene and a depside from Parmotrema austrocetratum Elix and J. Johnst, Consolacion Y. Ragasa, Maria Carmen S. Tan, Virgilio C. Linis, and Chien Chang Shen

Chemical Composition of Salacca wallichiana, Consolacion Y. Ragasa, Jasmine U. Ting, Maynard V. Ramones, Maria Carmen S. Tan, Romeo R. Lerom, Virgilio C. Linis, Robert Brkljaca, and Sylvia Urban

Adding insult to injury: Ship groundings are associated with coral disease in a pristine reef, L. J. Raymundo, Wilfredo Y. Licuanan, and A. M. Kerr

Biosorption of methylene blue from aqueous solution by coconut (Cocos nucifera) shell-derived activated carbon-chitosan composite, Precious Caree V. Regunton, Derick Erl P. Sumalapao, and Nelson R. Villarante

Ca and K decorated germanene as hydrogen storage: An ab initio study, Kurt Irvin M. Rojas, Al Rey C. Villagracia, Joaquin Lorenzo Moreno, Melanie David, and Nelson B. Arboleda

Epitaxial growth of p-InAs on GaSb with intense terahertz emission under 1.55-μm femtosecond laser excitation, Cyril P. Sadia, Lorenzo P. Lopez, Ramon M. delos Santos, Joselito E. Muldera, Alexander E. De Los Reyes, Mae Agatha C. Tumanguil, Christopher T. Que, Valynn Katrine Mag-usara, Masahiko Tani, Armando S. Somintac, Elmer S. Estacio, and Arnel A. Salvador

Species check-list for Tintinnids of the Philippines archipelago (Protozoa, ciliophora), Jane Abigail Santiago and Maria Carmen Lagman

Pathway-based human disease clustering tool using self-organizing maps, James Andrew R. Sarmiento, Angelyn Lao, and Geoffrey A. Solano

Terahertz transitions in narrow-gap carbon nanotubes and graphene nanoribbons, V. A. Saroka, R. R. Hartmann, and M. E. Portnoi

Primitive substitution tilings with rotational symmetries, April Lynne D. Say-Awen, Ma Louise Antonette N. de Las Peñas, and Dirk Frettlöh