Volume: 21 (2017) Issue 1


Table of Contents Editorial Board

Crystallinity of Hydroxyapatite Powders from Acid Washed and Thermally-Treated Tilapia Bones

Authors: Bienvenido M. Butanas

Volume: 21 (2017) Issue 1, Page: , Category: Natural Sciences
DOI:

This paper presents the production of quality hydroxyapatite (HAp) powders from tilapia bones using thermal treatment. Hydroxyapatite was successfully synthesized by calcination of 0.5M HCl pre-treated tilapia bones. Powder X-ray diffraction (XRD) revealed the nano-crystalline hexagonal structure of HAp powders.… More
1   309

Suppression of Bacterial Leaf Blight (Xanthomonas oryzae pv. oryzae) using Local Isolates of Rhizobacterial Antagonists

Authors: Fedencio V. Paslon, Revelieta B. Alovera, Carolina D. Amper, Myrna G. Ballentes

Volume: 21 (2017) Issue 1, Page: , Category: Natural Sciences
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Local isolates of rhizobacteria associated with rice rhizosphere were evaluated against Xanthomonas oryzae pv. oryzae (Xoo) both in vitro and in vivo conditions. Twenty-three rhizobacteria were isolated from the rice-growing provinces of Caraga Region, Philippines, and their antagonistic activity were… More
3   424

Effects of Sugar Mill Lime Sludge Treatment on the CBR and UCS of Expansive Soil in Bukidnon

Authors: Cheryl F. Daleon, Glen A. Lorenzo

Volume: 21 (2017) Issue 1, Page: , Category: Natural Sciences
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The purpose of this study is twofold: to address the proper utilization and disposal of a locally avail- able industrial waste known as sugar mill lime sludge, and to determine whether it could improve the subgrade performance of an expansive… More
1   262

Managing Local Disasters Capacity Needs for Disaster Risk Reduction Management

Authors: Angela Grace Toledo-Bruno, Eva N. Mendoza, Jedilyn M. Tandog

Volume: 21 (2017) Issue 1, Page: , Category: Natural Sciences
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Disaster risk reduction and management (DRRM) has become a national and global concern due to the impacts of climate change that increase exposure to disaster risks. The Philippines anchored its DRRM actions on RA 10121 enacted in 2010. This study… More
5   287

Flexural Response of Ferrocement I-Beam to Third-Point Loading

Authors: Leoncio Mariano C. Acma

Volume: 21 (2017) Issue 1, Page: , Category: Natural Sciences
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This study aimed to determine the flexural response of ferrocement I-Beam to third-point loading. Three replicates for each test specimen were made. They were cast using the fabricated C- shaped formwork reinforced with 16, 18, 20, and 22 layers of… More
1   215

Determination of Water Requirement for Alternate Wetting and Drying Irrigation Method of Lowland Rice in Bukidnon

Authors: Nelsa J. Olila, Ph.D., Engr. Carlo A. Ang, Rubenito Lampayan, Ph.D.

Volume: 21 (2017) Issue 1, Page: , Category: Natural Sciences
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Irrigation water delivered to the rice fields decreases during dry season causing crop damage due to water shortage. The study aimed to estimate the irrigation water requirement of a one hundred hectare rice fields in Maramag, Bukidnon during the dry… More
3   264
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