UPV Digital Repository (UPV–DR)
The official Institutional Repository of the University of the Philippines Visayas (UPV)
UPV–DR serves as the institutional repository and digital archives that preserves and provides access to UPV's academic outputs. It aims to facilitate wider dissemination, increased societal use, and enhanced visibility of UPV faculty members, staff, and students’ researches, creative works, and innovations. It aims to promote UPV’s scholarly and artistic works, enhance collaborations between the academe and the industry, and amplify extension work and public service.
UPV–DR aims to preserve institutional records, permanent records, and university memories. It also aims to provide access to the intellectual outputs of UPV researchers, artists, and innovators, such as publications in journals, books, conference proceedings, theses and dissertations, and artistic works, among others. Access is generally unrestricted and is compliant with the Open Archives Initiative (OAI) protocol.
UPV–DR is managed by the UP Visayas University Library.
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Recent Submissions
Comparative analysis of the gut content of Scylla de Haan, 1833 (Crustacea: Decapoda: Brachyura: Portunidae) collected from the rivers of poblacion Sapian, Capiz
Bautista, Florey Jane O. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2013-04)
The natural diet for various sizes and both sexes of the mud crab Scylla sp. collected from the river located at Brgy. Poblacion Sapian Capiz, Philippines was determined. Gut content analysis was conducted for the mud crabs ranging from 30- 109.99 mm carapace width. Results showed that predominant food of mud crab Scylla sp. consists of crustaceans such as shrimps and crabs as well, fish, mollusk, sand shells, unidentified egg, and even plants. Most of the gut content however, consists of chyme due to heavy mastication and presence of the gastric mills that digest the food. There is no ontogenetic shift or difference in the diet as well as diet difference between male and female crabs. The results were discussed in relation with the species’ feeding patterns and the effect of the diet on the maturation of the crab:
Re-membering typhoon Yolanda : oral historical reconstruction of Yolanda experience in selected coastal barangays in Pandan, Antique
Bautista, Katrina; Recopuerto, Harmon S. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2016-06)
This study examines the disaster narratives of barangay officials in the wake of Super Typhoon Yolanda in the Philippines in November 2013. Using oral history, fifteen village heads (Punong Barangay) were asked to reconstruct their disaster experience. This study is guided by Walter Fisher’s narrative theory (1984) and Greg Bankoff's culture of disasters theory (2006) which affords the researchers the opportunity to fully explore how the village heads reconstructed their disaster experiences as well as how they characterized their disaster experience through humor in their disaster narratives. This study reveals that there exists a narrative continuity in the disaster narratives of the village heads. The narratives are chronological and linked through a sense of directionality and causality. They focused on the resolution aspects of the stories, reflected in the long descriptions and evaluations of the stories of reconstruction and causal attribution found at the end of the narratives. Several themes also emerged in the beginning, middle, and end of the disaster narratives: stories of preparation, destruction, heroism, physical reconstruction and causal attribution of the disaster. Moreover, this study indicates that the characterization of disaster experience through the use of humor in the narratives helps to trivialize the disaster experience. It means that the use of humor is not necessarily a cure; instead it enables people to make sense of the event, cope and carry on in the aftermath of disasters. Gender and personality differences were two factors related to the use of humor in the disaster narratives. Men are more likely to use humor in their narratives than women and tend to be the creators of humor than the latter.
Optimization of parameters for the Fe-humic acid complex formation using cyclic voltammetry
Bautista, Coleen M. (Department of Chemistry, College of Arts and Sciences, University of the Philippines Visayas, 2019-06)
Humic acid extracted from an artesian well located at Sta. Barbara, Iloilo was used to generate an Fe-HA complex as a potential additive to bio floc systems to augment the essential mineral Fe. The humic acid obtained was black in color and had a powdery texture after oven-drying. The Fe-HA complex were prepared using Fe3+ ions at different pH values specifically at pH 8, 9 and 10. Formation of the complex was investigated using the cyclic voltammetry to determine the ideal conditions to maximize the binding of the metal ion. The results showed that there are two oxidation and reduction cycles which suggests that there are two species undergoing oxidation and reduction. It is possible that the free iron and the Fe in the complex are undergoing a redox cycle although the quinone group in the humic acid can also act as a redox center. Atomic Absorption Spectroscopy can help corroborate the amount of complex formed to help deduce the redox active center.
The relationship between selected social factors and adolescent pregnancy in Iloilo City
Bautista, Joseph Raymund I.; Funclara, Melinda Tordesillas (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2004-03)
This study attempts to ascertain if there is a relationship between selected social factors and adolescent pregnancy. Specifically, it aims to find out if school engagement, parental supervision, foster and kinship care, religiosity, contraceptive knowledge, and mass media exposure is related to adolescent pregnancy. The researchers hypothesized that there is a relationship between these selected factors and adolescent pregnancy. Adolescent mothers between 14 to 21 years old and were either pregnant or had given birth before December 2003 from three barangays in Iloilo City were interviewed. The gathered data were then subjected to Yates corrected chi-square test of independence to find out if there is any relationship between the dependent and independent variables.
It was found out that school engagement, parental supervision, level of religiosity, exposure to mass media, and knowledge in contraceptive use have no relationship with adolescent pregnancy. On the other hand, foster and kinship care was found to have a relationship with adolescent pregnancy.
For future research directions, the researchers recommend to those who are interested in adolescent pregnancy to explore the interrelationship between the factors that contribute to adolescent pregnancy. The researchers further suggest that other factors, such as economic status, be explored. Increasing the number of respondents might also be helpful. Finally, the possibility that staying away from compromising situations with the opposite sex is an effective factor to prevent adolescent pregnancy could be an interesting topic.
Phytochemical screening, antibacterial and antioxidant activity of Ethanolic seed extract of Kadios (Cajanus cajan) from Igbaras, Iloilo, Philippines
Bautista, Lance Ruther E. (Department of Chemistry, College of Arts and Sciences, University of the Philippines Visayas, 2016-06)
Natural products are products which may have been chemically synthesized, through semi- or total synthesis. The presence of these natural sources gave us greater opportunity for discovery and different innovations, as answers to the emerging needs of the people. This study focused on the chemical properties, antibacterial and antioxidant activity, of Cajanus cajan, popularly known as Kadios, from Igbaras, Iloilo, Philippines. A total of 371.98 grams of air-dried C. cajan seeds was macerated to 1000 mL of ethanol for 72 hours. The concentrated extract was subjected to three tests and assays. All tests were done in triplicates. The test for phytochemicals, which served as the preliminary screening, revealed that the ethanolic extract of Kadios seeds contains alkaloids, flavonoids, phenols, saponins, tannins, quinones, and steroids. The antibacterial assay showed that the ethanolic seed extract of C. cajan can inhibit the growth of Gram-negative bacteria, E. coli, with zone of inhibition equal to 10.3 ±2.15 mm to 33 ± 1.63 mm. The antioxidant assay revealed that the extract has positive inhibition only at high concentration against DPPH, and so IC50 was further determined to be 27,310 ug/mL. Statistical analyses were also done, and confirmed that there is significant difference among the data at (P<0.05). Summing up, the extract has antibacterial activity and minimal or almost close to zero antioxidant activity, while containing a remarkable number of secondary metabolites causing the chemical activities of the extract.