Davao, Philippines

Ateneo de Davao University

www.addu.edu.ph
Davao, Philippines

The Ateneo de Davao University is a private teaching, service and research university run by the Society of Jesus in Davao City in the Philippines. It is also known by the acronym AdDU. It was established in 1948, and is the seventh Ateneo opened by the Jesuits in the Philippines. The university has five undergraduate schools, namely the School of Arts and science, School of Business and Governance, School of Engineering and Architecture, School of Education and the School of Nursing. The graduate programs are under these units as well. The College of Law is a separate unit within the university. The university also runs a grade school and high school.The University was granted "Institutional Accreditation" by the Philippine Accrediting Association of Schools, Colleges and Universities in which only six universities in the country were given such recognition, and was also granted Autonomous Status by the Commission on Higher Education . In terms of university rankings, Ateneo de Davao University placed 201st in years 2009 and 2010 and belonged to the 301+ bracket and 251-300 bracket in 2012 and 2014 respectively according to the rankings done by Quacquarelli Symonds on top universities in Asia. Also, the Ateneo de Davao joined the roster of world universities in the 2012 QS World University Subject Ranking for English Language and Literature joining Oxford and Harvard, wherein it landed on the 101-150 bracket.In the national rankings done by the Commission on Higher Education and the Professional Regulation Commission based on cumulative data from 1991 to 2001 of average passing rates in all courses of all Philippine colleges and universities in licensure examinations, Ateneo de Davao University was proclaimed as the 5th top university in the country. Locally, AdDU emerged as the top school in Davao City according to the ranking published by Davao Reader and also in another ranking by Davao Eagle Online which was based on the number of PRC board topnotchers in 2013. Wikipedia.

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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.


Quirino J.P.,University of Tasmania | Quirino J.P.,Ateneo de Manila University | Aranas A.T.,University of Tasmania | Aranas A.T.,Ateneo de Manila University | Aranas A.T.,Ateneo de Davao University
Journal of Separation Science | Year: 2012

A transient micellar phase extractor using CTAB was described for the online sample concentration of various anionic analytes (drugs and herbicides) in CE. Stacking and separation was performed at neutral pH in coelectroosmotic flow in a hexadimethrine bromide coated fused-silica capillary. A micellar plug (e.g. 10 mM CTAB) was injected prior to hydrodynamic injection of the analytes prepared in aqueous organic solvent (e.g. with 30% ACN). In the presence of an electric field, the micelles interacted with the anions inside the capillary. This was followed by selective analyte focusing via the mechanism of micelle to solvent stacking. The micelles acted as transient extractor because the stacking ends when the injected micelles completely migrated through the boundary between the sample and micellar plug. Fundamental studies were performed (effect of surfactant concentration, etc.) and the technique yielded 13-to 30-fold improvements in peak height. A stacking CE method in conjunction with liquid-liquid extraction was also tested for the detection of the herbicides fenoprop and mecoprop in fortified drinking water at analyte concentration levels relevant to Australian Drinking Water Guidelines. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Quirino J.P.,University of Tasmania | Quirino J.P.,Ateneo de Manila University | Aranas A.T.,University of Tasmania | Aranas A.T.,Ateneo de Manila University | Aranas A.T.,Ateneo de Davao University
Electrophoresis | Year: 2012

In this paper, by injecting a SDS micellar plug before the sample prepared in aqueous organic solvents, we show the on-line sample preconcentration of cations via micelle to solvent stacking (MSS) using solvents of as low as 30%. This extends the choice of stacking techniques to include moderate amounts of organic solvent in the sample. The approach is akin to in-line solid phase extraction where the micellar plug acted as a transient micellar phase extractor. Basic studies were conducted (e.g. type and amount of organic solvent in the sample). The calculated sensitivity enhancement factors based on LOD obtained for the six test antipsychotic drugs were from 41 to 68. The peak signals were linear (R2 > 0.99) from 0.2 to 10.0 μg/mL. The intraday and interday reproducibility (n = 10) for migration time, peak height, and corrected peak area were from 0.2 to 13.6%. The technique was also tested on spiked wastewater sample with minimal sample treatment (i.e. dilution and centrifugation). © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Quirino J.P.,University of Tasmania | Quirino J.P.,Ateneo de Manila University | Aranas A.T.,University of Tasmania | Aranas A.T.,Ateneo de Manila University | Aranas A.T.,Ateneo de Davao University
Analytica Chimica Acta | Year: 2012

Simultaneous electrokinetic and hydrodynamic injection (SEHI) of organic cations (tricyclic antidepressant and beta blocker drugs) with on-line sample concentration using micelle to solvent stacking (MSS) was studied in micellar electrokinetic chromatography. Compared to conventional injection, >300-fold improvements in signals were obtained by hydrodynamic injection. However, with SEHI the amount of sample ions introduced into the capillary was increased which afforded a higher gain of up to 4000-fold without compromise to separation efficiency. The electrokinetic injection at negative polarity (anode at the detector end) introduced the micelle bound analytes. The hydrodynamic injection also maintained the MSS boundary inside the capillary. The stability of the MSS boundary affected SEHI where mild conditions that were low voltage as well as pressure injection were desired. The limits of detection were in the range from 0.6-4.2ngmL -1. A strategy for optimization was described and the method was applied to the ngmL -1 analysis of spiked wastewater after simple dilution and centrifugation. © 2012.


Aranas A.T.,University of Tasmania | Aranas A.T.,Ateneo de Manila University | Aranas A.T.,Ateneo de Davao University | Guidote Jr. A.M.,Ateneo de Manila University | And 2 more authors.
Talanta | Year: 2011

The simultaneous analysis of tricyclic antidepressant (amitriptyline, clomipramine, doxepin and nortriptyline) and β-blocker (alprenolol, labetalol and propranolol) drugs in wastewater was developed via sweeping-micellar electrokinetic chromatography (MEKC) together with a simple liquid-liquid extraction step. For sweeping-MEKC, the amount of organic modifier in the separation electrolyte, the concentration of phosphoric acid in the sample matrix and the injection time of the sample were optimized. Sensitivity enhancements of up to 305-fold were achieved via sweeping. This allowed limits of detection (LOD) from 7 to 27 ng/mL. The relative standard deviations of migration time, corrected peak area and peak height were less than 3.2%, 7.8% and 4.5%, respectively. Liquid-liquid extraction using dichloromethane as solvent afforded up to 21-fold enrichment of the drugs from spiked wastewater. No interference of the sample matrix was observed and recoveries were obtained in the range of 77-113% for all analytes except labetalol at three spiking levels of 16, 80 and 160 ng/mL. Detection at the ng/mL level makes this simple, environmentally friendly and cost effective method competitive against recently reported methods using advanced liquid-phase separation techniques for monitoring similar drugs in wastewater. Copyright © 2011 Published by Elsevier B.V. All rights reserved.


Lebel L.,Chiang Mai University | Manuta J.B.,Ateneo de Davao University | Garden P.,Internews
Regional Environmental Change | Year: 2011

Vulnerabilities to floods in Thailand are changing as a result of many factors. Formal and informal institutions help shape exposure, sensitivity and capacities to respond of individuals, social groups and social-ecological systems. In this paper we draw on several case studies of flood events and flood-affected communities to first assess how current practices reflect various laws, procedures, programs and policies for managing floods and disasters and then explore the implications for dealing with additional challenges posed by climate change. Our analysis identifies several institutional traps which need to be overcome if vulnerability is to be reduced, namely capture of agendas by technical elites, single-level or centralized concentration of capacities, organizational fragmentation and overemphasis on reactive crisis management. Possible responses are to expand public participation in managing risks, build adaptive capacities at multiple levels and link them, integrate flood disaster management and climate change adaptation into development planning, prioritize risk reduction for socially vulnerable groups and strengthen links between knowledge and practice. Responses like these could help reduce vulnerabilities under current climate and flood regimes, while also improving capacities to handle the future which every way that unfolds. © 2010 Springer-Verlag.


Llagas M.C.L.,University of Santo Tomas of Philippines | Llagas M.C.L.,Ateneo de Davao University | Santiago L.,University of Santo Tomas of Philippines | Ramos J.D.,University of Santo Tomas of Philippines
Tropical Journal of Pharmaceutical Research | Year: 2014

Purpose: To investigate the cytotoxic and apoptotic activities of Ficus pseudopalma (FP) Blanco leaf extracts against normal human FSE cells and human prostate PRST2 cancer cell line. Methods: FP leaves were extracted with 95 % ethanol, and partitioned with chloroform, ethylacetate, and water. The presence of terpenoid lupeol and flavonoid quercetin was determined through high performance liquid chromatography (HPLC). The cytotoxic and apoptotic effects of different concentrations of FP extracts on PRST2 cells and on non-cancerous human foreskin surface epithelial (hFSE) cells were determined by 3-[4, 5-dimethylthiazol-2-yl]-2, 5-diphenyltetrazolium bromide (MTT) assay, tryphan blue exclusion assay, Live/Dead viability assay and terminal deoxynucleotidyl transferase dUTP nick end labelling (TUNEL) assay. Results: Ethylacetate, chloroform, and crude ethanol extracts were significantly cytotoxic to PRST2 cell lines (p < 0.001) in a concentration-dependent manner with a 50 % cell growth inhibitory concentration of 4.16, 4.83 and 44.53 μg/mL, respectively. A significant decrease in the viability of PRST2-treated cells (p < 0.001) in a concentration-dependent manner was observed in the tryphan blue exclusion assay and in the Live/Dead® viability assay. Using APO-BrdU TUNEL assay, apoptotic activities of the extracts increased in a concentration-dependent manner. All the extracts did not show significant cytotoxic effect on hFSE cells (p = 0.064). Conclusion: The cytotoxic and apoptotic activities of FP extracts may be due to the presence of lupeol and quercetin. This study suggests that apoptotic mechanisms may be involved in the growth inhibitory activity of FP leaf extracts against human PRST 2 cell lines. © Pharmacotherapy Group, Faculty of Pharmacy, University of Benin, Benin City, 300001 Nigeria. All rights reserved.


De Las Llagas M.C.,Ateneo de Davao University | Santiago L.,University of Santo Tomas of Philippines | Ramos J.D.,University of Santo Tomas of Philippines
Asian Pacific Journal of Tropical Disease | Year: 2014

Objective: To investigate the antimicrobial properties of Ficus pseudopalma (F. pseudopalma) leaf extracts. Methods: The antibacterial properties of F. pseudopalma Blanco crude ethanolic leaf extract, and its solvent fractions chloroform (CF), ethylacetate (EF) and water fractions were evaluated through antibacterial agar disc diffusion method and the minimum inhibitory concentration (MIC) was determined. Five Gram-positive and five Gram-negative bacteria were used for the study. Results: The zone of inhibitions obtained from the antibacterial agar diffusion disc method showed that CF, and EF exhibited active (14-19 mm) antibacterial activity against Bacillus subtilis UST CMS 1011, and partially active (10-13 mm) antibacterial properties against both Staphylococcus aureus ATCC 25923 and Staphylococcus epidermidis ATCC 12228. Water exhibited no antibacterial properties against all microorgranisms tested. The MIC values observed for all Gram-positive bacteria tested were >5 mg/mL, except for Bacillus subtilis whose MIC value was 5 mg/mL for CF and EF fractions. All extracts exhibited no antibacterial activity against Gram-negative bacteria. Conclusions: From this study, it can be concluded that F. pseudopalma extracts may be a potential antibacterial agent against Gram-positive bacteria. The antibacterial property may be attributed to flavonoids and terpenoids present in the crude ethanolic extract, CF and EF. © 2014 Asian Pacific Tropical Medicine Press.


Tacadao G.S.,Ateneo de Davao University | Toledo R.P.S.,Ateneo de Davao University
Proceedings - IEEE 15th International Conference on Advanced Learning Technologies: Advanced Technologies for Supporting Open Access to Formal and Informal Learning, ICALT 2015 | Year: 2015

For collaborative learning to be successful, the instructor must carefully plan the formation of student groups. Typically, a teacher uses a set of conditions inferred from certain student parameters such as individual proficiency, learning and thinking styles, team-related traits and personality traits. While all of these parameters are instructor-driven, it is also favorable to get the teammate preferences of the students. Based on this, an instructor strategy can thus be generalized as an assignment problem that satisfies the most number of predetermined conditions based on these parameters and the most number of teammate preferences. In this paper, the generic model was implemented using constraint logic programming. Cohorts produced are evaluated based on the parameter constraints satisfied and on the number of teammate preferences satisfied. As such, the study demonstrates not only the feasibility of applying Constraint Logic Programming in the field of computer-supported group formation but also demonstrates that an instructor strategy can both include parameters decided by the instructor and teammate preferences from students. © 2015 IEEE.


Tacadao G.,Ateneo de Davao University | Toledo R.P.,Ateneo de Davao University
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2016

Forming student groups must be carefully planned for a successful collaborative work. Since there is no consensus in the literature and in practice as to the strategy and parameters to use, a strategy that takes the teachers’ and the students’ perspectives was developed in this preliminary study. Furthermore, a program based on this strategy was also written using Constraint Logic Programming (CLP). The parameters and conditions to use were obtained through a faculty survey and student interviews. Based on the results, the faculty does not regard teammate preferences as important while students prefer that these are given the utmost consideration. Thus, cohorts produced are not only evaluated based on satisfied constraints but also on satisfied teammate preferences. Hence, the study demonstrates not only that CLP can be applied in the field of computer supported group formation but also that a grouping strategy can both include parameter constraints and teammate preferences. © Springer International Publishing Switzerland 2016.

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