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

Authors: Bienvenido M. Butanas

Volume: 21 (2017) Issue 1, Category: Natural Science

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   131

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, Category: Natural Science

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   290

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, Category: Natural Science

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   92

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, Category: Natural Science

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   146

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

Authors: Leoncio Mariano C. Acma

Volume: 21 (2017) Issue 1, Category: Natural Science

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   95
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