Cagayan de Oro, Philippines
Cagayan de Oro, Philippines

Xavier University – Ateneo de Cagayan is a private, Catholic university run by the Society of Jesus in Cagayan de Oro, Philippines.It was founded on June 7, 1933 as the Ateneo de Cagayan by an American Jesuit missionary, Fr. James T. G. Hayes, S.J., who later became the first Bishop and Archbishop of Cagayan de Oro. In 1958, Ateneo de Cagayan became a university and was renamed to its present name, Xavier University – Ateneo de Cagayan, in honor of the Jesuit missionary, St. Francis Xavier. Wikipedia.


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Almaden C.R.C.,Xavier University - Ateneo de Cagayan
International Journal of Social Ecology and Sustainable Development | Year: 2017

Freshwater fishing is an important socioeconomic aspect of the communities in the Cagayan de Oro River (CDOR), Philippines. The fishery sector in CDOR has the elements that are generally characteristic of artisanal or small-scale fisheries. Before this study, very little was known of the scope and magnitude of artisanal level fishing activities within the CDOR. It has remained undocumented by Local Government Units (LGUs) as it does not contribute directly to the economy in terms of measurable cash flow. However, a number of fishes in the river have higher commercial value compared to marine fisheries in the nearby Macajalar Bay. This study is an attempt to examine the conditions of the CDOR fisheries and to quantify its economic contributions. The economic contribution is measured in terms of the market value of captured aquatic resources. In order to establish the behavior and trends in the fisheries of the different communities, the study area was divided into three subzones. Data in this study were collected through interviews of identified fishermen in the different sub-zones. Majority of the fishermen venture into other menial jobs due to proximity to the urban center. Many of them have subsidiary occupations which serve the dual purpose of alternative income and job opportunities and food source because fishing is seasonal. The peak fishing season usually spans two to four months. Comparatively, the earnings derived by the Cagayan de Oro River fishermen are relatively in almost the same range as the marine fishermen in the different parts of the country. © 2017, IGI Global.


Tubaon R.M.S.,University of Tasmania | Rabanes H.,University of Tasmania | Rabanes H.,Xavier University - Ateneo de Cagayan | Rabanes H.,Ateneo de Manila University | And 2 more authors.
Electrophoresis | Year: 2014

Bioactive natural products are major sources of lead compounds for drug discovery and pharmaceutical development, therefore, innovative and current separation and characterization techniques are important for these compounds. Here, CE methods applied for the analysis of natural products published during 2011-2012 are reviewed. This is an updated version of an earlier review paper in this journal, which highlighted developments during 2006-2010. The major method developments over the review period centered on derivatization, chiral analysis, modes of detection, stacking or on-line sample concentration, and sample preparation (predominantly using extraction methods). The samples analyzed were herbal products, foods, soil, and biological samples. Developments also occurred in the areas of quality control, toxicology assessment, and enzyme-inhibitor screening. A table that summarizes the areas, source of natural product, nature of the bioactive analyte, CE conditions, LODs, and corresponding reference is provided. A short description on the theory of CE and insights on future activities of CE on natural products are also presented. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Apor G.P.,Xavier University - Ateneo de Cagayan
ACRS 2015 - 36th Asian Conference on Remote Sensing: Fostering Resilient Growth in Asia, Proceedings | Year: 2015

This paper highlights the use of Geographic Information System (GIS) as a tool for the landslide risk assessment of the mountain highway connecting Cagayan de Oro City to the province of Bukidnon and its crucial role in Highway and Slope Engineering. The Cagayan de Oro Airport-Bukidnon Highway is a major transportation trunk line interconnected with a network of provincial roads in central and southern Mindanao. Mindanao plays an important role in food security and agricultural economy in the Philippines. Thus, there is a need for a better and safer infrastructure allowing smooth transportation of agricultural products. The aim of the study is to conduct a landslide assessment at site investigation scale of the mountain highway and use the assessment outcomes for specific highway and slope protection. GIS is used to map the preparatory factors that affects the susceptibility of the slope. The geology of the site was determined and a sub-surface geotechnical investigation has been carried out at the site to produce a site investigation scale of assessment. Results of the slope stability analyses conducted at the study area with its triggering factors are used to quantify the landslide hazard.


Dollera E.B.,Xavier University - Ateneo de Cagayan | Villanueva E.P.,Mindanao State University
IOP Conference Series: Materials Science and Engineering | Year: 2015

The present study is to evaluate the heat transfer coefficient of the minichannel copper blocks used as evaporator with R-134a as the refrigerant. Experiments were conducted using three evaporator specimens of different channel hydraulic diameters (1.0mm, 2.0mm, 3.0mm). The total length for each channel is 640 mm. The dimension of each is 100mm.x50mm.x20mm. and the outside surfaces were machined to have fins. They were connected to a standard vapour compression refrigeration system. During each run of the experiment, the copper block evaporator was placed inside a small wind tunnel where controlled flow of air from a forced draft fan was introduced for the cooling process. The experimental set-up used data acquisition software and computer-aided simulation software was used to simulate the pressure drop and temperature profiles of the evaporator during the experimental run. The results were then compared with the Shah correlation. The Shah correlation over predicted and under predicted the values as compared with the experimental results for all of the three diameters and high variation for Dh=1.0mm. This indicates that the Shah correlation at small diameters is not the appropriate equation for predicting the heat transfer coefficient. The trend of the heat transfer coefficient is increasing as the size of the diameter increases.


Rabanes H.R.,Xavier University - Ateneo de Cagayan | Rabanes H.R.,Ateneo de Manila University | Guidote Jr. A.M.,Ateneo de Manila University | Quirino J.P.,Ateneo de Manila University | Quirino J.P.,University of Tasmania
Electrophoresis | Year: 2012

An extensive search of the published research and review articles indicated a growing number of works that employed electroseparation techniques. Capillary zone electrophoresis (CZE) and electrokinetic chromatography (EKC), in particular, were found to be popular for the analyses of natural products. This review outlines the important developments in this field over the years, especially during the 2006-2010 period. An overview of the natural product applications such as pharmaceuticals/herbal products, fingerprinting and quality control, food and food contaminants, and toxicological compounds of interest to forensics were presented. Important areas of detection strategies, microchips, sample preconcentration, and chiral separations were also discussed. Hence, quick information was provided on the researches already undertaken and the possibilities of unexplored areas. In addition, fundamental concepts for the understanding of CZE and EKC and their suitability for natural products analyses were briefly discussed. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Rabanes H.R.,University of Tasmania | Rabanes H.R.,Ateneo de Manila University | Rabanes H.R.,Xavier University - Ateneo de Cagayan | Aranas A.T.,University of Tasmania | And 5 more authors.
Journal of Chromatography A | Year: 2012

Injection of a sodium dodecyl sulfate micellar plug prior to the sample solution induced transient micellar phase extraction of cationic drugs in capillary electrophoresis. Micelle to solvent stacking mechanism was utilized by preparing the sample in aqueous organic solvent. Synergism was achieved with field enhanced sample injection that allowed larger sample loads. Micelle to solvent stacking occurred concurrently with the enhanced injection after the fast moving analytes electrophoretically migrated into the micellar plug. This was different from stacking combinations with field enhancement where the electric field strength difference was involved in analyte focusing. Using a sample diluent that had one-tenth the conductivity of the background solution, the strategy afforded thousands-fold improvements in peak height and LODs (S/. N= 3) of as low as 1.1. ng/mL. The results were repeatable and linear. Adaptability to real sample analysis was evaluated using spiked urine sample after minimal sample clean-up. © 2012.


Rabanes H.R.,University of Tasmania | Rabanes H.R.,Ateneo de Manila University | Rabanes H.R.,Xavier University - Ateneo de Cagayan | Quirino J.P.,University of Tasmania | Quirino J.P.,Ateneo de Manila University
Electrophoresis | Year: 2013

Sweeping, an on-line sample concentration technique in CE, is the picking and accumulation of analytes by the pseudostationary phase or complexing additive. In the presence of an electric field, the analytes concentrated at the additive front that initially penetrated the sample zone. Here, we describe the sweeping of cationic alprenolol enantiomers using sulfated β-CD and organic solvent. The separation solution contained the anionic additive while ACN was in the sample solution. With fused silica capillaries, positive polarity, and solutions buffered at pH 3, the direction of the enantiomers' effective electrophoretic mobility was the same as the electrophoretic mobility (or electrophoretic mobility without additive). When the amount of ACN in the sample was increased (i.e. 60%), the interaction between the analytes and additive became negligible. This caused the sweeping boundary to shift from the electrophoretically moving β-CD front to the zone between the sample and separation solution. The equation that described the narrowing of injected sample zone was derived. The performance of sweeping with 60% ACN in the sample was then studied under different operating conditions (e.g. type of injection, injection time, and CD concentration). The low interaction between enantiomers and additive gave only moderate increases in sensitivity (approximately tenfold), but was improved when field enhancement was used during electrokinetic injection. With a conductivity difference (separation/sample solution) of 70 and a short injection time of 30 s at 20 kV, peak improvements of >100-fold was easily achieved. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Carreon A.C.,Ateneo de Manila University | Carreon A.C.,Virginia Polytechnic Institute and State University | Carreon A.C.,Xavier University - Ateneo de Cagayan | Santos W.L.,Virginia Polytechnic Institute and State University | And 2 more authors.
Polymer Chemistry | Year: 2014

A new water soluble cationic polythiophene derivative, poly(N,N,N- trimethyl-3-(2-(thiophen-3-yl)acetamido)propan-1-aminium iodide), was synthesized via two consecutive post-polymerization functionalizations of poly(methyl 2-(thiophen-3-yl)acetate). This conjugated polymer binds DNA at N/P = 5 and forms polyplexes at N/P = 10. Its potential use as a theranostic gene delivery vehicle is investigated here. © 2014 The Royal Society of Chemistry.


Almaden C.R.C.,Xavier University - Ateneo de Cagayan
International Journal of Ecological Economics and Statistics | Year: 2016

Freshwater fishing is an important socioeconomic aspect of the communities in the Cagayan de Oro River (CDOR). The fishery sector in CDOR has the elements that are generally characteristic of artisanal or small-scale fisheries. Before this study, very little was known of the scope and magnitude of artisanal level fishing activities within the CDOR. It has remained undocumented by Local Government Units (LGUs) as it does not contribute directly to the economy in terms of measurable cash flow. However, a number of fishes in the river have higher commercial value compared to marine fisheries in the nearby Macajalar Bay. This study is an attempt to examine the conditions of the CDOR fisheries and to quantify its economic contributions. The economic contribution is measured in terms of the market value of captured aquatic resources. In order to establish the behavior and trends in the fisheries of the different communities, the study area was divided into three sub-zones. Data in this study were collected through interviews of identified fishermen in the different sub-zones. Majority of the fishermen venture into other menial jobs due to proximity to the urban center. Many of them have subsidiary occupations which serve the dual purpose of alternative income and job opportunities and food source because fishing is seasonal. The peak fishing season usually spans two to four months. Comparatively, the earnings derived by the Cagayan de Oro River fishermen are relatively in almost the same range as the marine fishermen in the different parts of the country. © 2016, CESER PUBLICATIONS.


Arancon R.A.,Xavier University - Ateneo de Cagayan | Barros Jr H.R.,Xavier University - Ateneo de Cagayan | Balu A.M.,University of Cordoba, Spain | Vargas C.,Rey Juan Carlos University | Luque R.,University of Cordoba, Spain
Green Chemistry | Year: 2011

Functionalised porous carbonaceous materials prepared from the controlled pyrolysis of corncobs were found to provide excellent activities in the simultaneous esterification/transesterification of highly acidic waste oils to biodiesel-like mixtures. Materials carbonised at 600 °C (mostly microporous) containing -SO 3H groups (ca. 1 wt% S, 0.16 mmol g -1 -SO 3H) exhibited the optimum yields (>95%) to fatty acid methyl esters after 6 h of reaction. This journal is © The Royal Society of Chemistry.

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