Article title: Spatiotemporal Analysis of Extreme Rainfall and Meteorological Drought Events over the Angat Watershed, Philippines
Authors: Allan T. Tejada, Jr., Patricia Ann J. Sanchez, Francis John F. Faderogao,Catherine B. Gigantone, and Roger A. Luyun, Jr.
Publication title: Atmosphere 14(12), December 2023
Full text link http://tinyurl.com/ysn37zu9
Article title: Evaluation of groundwater quality for domestic purposes of Malamawi Island, Isabela City, Basilan, Philippines
Authors: Jalil, A.A., Luyun, R.A., Jr., Delos Reyes, A.A., Jr., Bato, V.A.
Publication title: International Journal of Agricultural Technology 18(3): 1001-1012, 2022
Full text link http://tinyurl.com/bdd38kz8
Article title: Statistical Analysis of Crop Water Stress in Rainfed Rice (Oryza sativa L.) Using Spectral and Non-spectral Indices
Authors: Glaiza J. Visitacion, Ronaldo B. Saludes, Roger A. Luyun Jr.,
Yaminah Mochica M. Pinca, and Marck Ferdie V. Eusebio,
Publication title: The Philippine Journal of science 151(2):587-603, April 2022
Full text link http://tinyurl.com/ye2h463p
Article title: Development of an Automated Drinking System Using Microcontroller for Broiler Production
Authors: Debbie Butch R. Pequeña, Arthur L. Fajardo, Omar F. Zubia, Roger A. Luyun Jr.
Publication title: Philippine Journal of Agricultural and Biosystems Engineering 17(1), May 2021
Full text link http://tinyurl.com/bdh4upw7
Article title: Determination of Aquifer Parameters Using Theis Method in Malamawi Island, Isabela City, Basilan, Philippines
Authors: Alejandro A. Jalil, Roger A. Luyun, Jr., Aurelio A. Delos Reyes, Jr., Victorino A. Bato4
Publication title: International Journal of Multidisciplinary Research and Analysis 4(5): 2643-9875, May 2021
Full text link http://tinyurl.com/35uwjmdj
Article title: Performance evaluation and characterization of a locally designed water pump
Authors: A S Pascual, A L Fajardo, O F Zubia, R A Luyun Jr.
Publication title: IOP Conference Series Materials Science and Engineering 1109(1):012015, March 2021
Full text link http://tinyurl.com/ykcsz945
Article title: Assessment of Groundwater Quality for Irrigation at Malamawi Island, Basilan, Philippines
Authors: Alejandro A. Jalil, Roger A. Luyun, Jr, Aurelio A. Delos Reyes, Jr.,and Victorino A. Bato
Publication title: Jurnal Penelitian Pengelolaan Daerah Aliran Sungai 4(2), December 2020
Full text link http://tinyurl.com/49f7a7dp
Article title: Determination of Rice Crop Coefficient using Modified Microlysimeter
Authors: Roger A. Luyun, Jr., John Ruzzel M. Galoso, Rosa B. Delos Reyes, and Jeffrey A. Gonzales
Publication title: Philippine Journal of Agricultural and Biosystems Engineering 16(1), January 2020
Full text link http://tinyurl.com/5n6aze9d
Article title: Site Suitability Analysis of Small Water Impounding Projects (SWIPs) in CALABARZON Region Using GIS-Based Water Resources Assessment
Authors: Rossana Marie C. Amongo, Ronaldo B. Saludes, Roger A. Luyun, Jr., Patrick Lemuel P. Relativo, Maria Victoria L. Larona, Ronnie C. Valencia, Ria Salustia dG. Duminding, Michel G. Acosta, Kobe Conrad R. Abellera, John Carlo L. Navasero, Romel A. Arrobang
Publication title: Philippine Journal of Agricultural and Biosystems Engineering 16(2), January 2020
Full text link http://tinyurl.com/bdfpn8sj
Article title: Issues on communal irrigation systems in the Philippines
Authors: Roger A. Luyun Jr. and Dulce D. Elazegui
Publication title: PIDC: Policy Notes 2019(7), June 2019
Full text link http://tinyurl.com/84zr3x8r
Article title: Determination of Site-Specific Crop Coefficients of Corn (Zea mays)
Authors: Jeffrey A. Gonzales, Roger A. Luyun, Jr., Rosa B. De Los Reyes and Ruzzel M. Galoso
Publication title: Philippine Journal of Agricultural and Biosystems Engineering 15(2), January 2019
Full text link http://tinyurl.com/mt4hb6yf
Article title: Utilization of Established Protocol in Identifying Potential Sites for Small Farm Reservoirs in Quezon Province, Philippines Using GIS-Based Water Resources Assessment
Authors: Rossana Marie C. Amongo, Ronaldo B. Saludes, Roger A. Luyun, Jr., Patrick Lemuel P. Relativo, Maria Victoria L. Larona, Ronnie C. Valencia, Michel G. Acosta, Kobe Conrad R. Abellera, John Carlo L. Navasero, and Ria Salustia dG. Duminding
Publication title: Philippine Journal of Agricultural and Biosystems Engineering 15(2), January 2019
Full text link http://tinyurl.com/yb2ybxc7
Article title: Laboratory-Scale Investigation of Recharge Wells for Groundwater Storage
Authors: Roger A. Luyun, Jr., Arthur L. Fajardo2, Rosa B. de los Reyes, Christine P. Bumanglag, and Joselle R. Luna
Publication title: Philippine Journal of Agricultural and Biosystems Engineering 15(1), January 2019
Full text link http://tinyurl.com/4bedy2ff
Article title: Laboratory Scale Investigation of Dispersion Effects on Saltwater Movement due to Cutoff Wall Installation
Authors: Masahiro Takahashi, Kazuro Momii, and Roger Luyun Jr.
Publication title: E3S Web of Conferences 54:00038, January 2018
Full text available upon request to the author/s.
Article title: Policy and Institutional Challenges in Climate Information Services Provisioning in Philippine Agriculture
Authors: Dulce D. Elazegui, Agnes C. Rola, Roger A. Luyun, Jr., Nico Jayson C. Anastasio, Francis John F. Faderogao, Maria Cristina A. Alvarez
Publication title: Journal of Public Affairs and Development 4:51-79, 2017
Full text link http://tinyurl.com/45x4npz2
Article title: Technical assessment of communal irrigation systems in Luzon
Authors: Roger A. Luyun Jr.
Publication title: PIDS: Policy Notes 2015-7, December 2015
Full text link http://tinyurl.com/3hzmff7a
Article title: Effects of Recharge Wells and Flow Barriers on Seawater Intrusion
Authors: Roger Luyun Jr., Kazuro Momii, Kei Nakagawa
Publication title: Groundwater 49(2):239-249, March 2011
Full text link http://tinyurl.com/yujchshf
Article title: Effects of artificial recharge and physical barrier on seawater intrusion
Authors: Roger Luyun Jr., Kazuro Momii, Kei Nakagawa and Masahiro Takahashi
Publication title: Annual Journal of Hydraulic Engineering 53, 2009
Full text link http://tinyurl.com/4b3t9wa7
Article title: Laboratory-scale saltwater behavior due to subsurface cutoff wall
Authors: Roger Luyun Jr., Kazuro Momii, Kei Nakagawa
Publication title: Journal of Hydrology 377(3-4):227-236, August 2009
Full text link http://tinyurl.com/ykajnk54
Article title: Saltwater dynamics due to cut-off wall installation in coastal unconfined aquifers: Experimental and numerical studies
Authors: R. Luyun, Jr., K. Momii, K. Nakagawa, S. Fujiyama
Publication title: Calibration and Reliability in Groundwater Modelling: Credibility of Modelling 2008
Full text link http://tinyurl.com/ydym3bac