Undergraduate Theses
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Item Antidiarrheal activity of Pterocarpus indicus bark extracts using castor oil-induced diarrhea model on miceCabatea, Norberto C. (Department of Chemistry, College of Arts and Sciences, University of the Philippines Visayas, 2010-04)This study evaluated the antidiarrheal activity of the bark of Pterocarpus indicus (Narra). The crude methanolic extract of the bark was subjected to sequential extraction using hexane, DCM, and ethyl acetate. These extracts were tested for antidiarrheal activity in vitro using the castor oil induced diarrhea model in mice employing charcoal tracing method. Thin Layer Chromatography (TLC) was used in determining the chemical constituents present in every extracts using spraying reagents to aid in the visualization of spots. Crude methanolic extract dosage 200 mg/kg body weight is the comparable dosage to the reference drug loperamide (2 mg/kg body weight). The hexane extract was the most active fraction and 200 mg/kg dosage was more effective than with the positive control loperamide (2 mg/kg). No antidiarrheal activity found in the fraction of DCM and ethyl acetate extracts. Phytochemical screening revealed positive tests for tannins, phenolics, terpenes, cardiac glycosides, saponins and reducing sugars in all fractions. Tests for flavonoids and alkaloids, however, were negative.Item In vitro antibacterial activity of Hibiscus rosa sinensis leaf extracts against some pathogens associated with urinary tract infectionsCabayao, Coney B. (Department of Chemistry, College of Arts and Sciences, University of the Philippines Visayas, 2011-04)The in vitro antibacterial activity of Hibiscus rosa sinensis leaf ( methanolic, dichloromethane, ethyl acetate, n-hexane, and aqueous ) extracts were studied against Gram-negative (Escherichia coli and Pseudomonas aeruginosa ) and Gram-positive ( Streptococcus faecalis) bacteria. The methanolic extract was subjected to sequential liquid-liquid extraction using solvents of varying polarity and concentrations. Out of the 5 extracts, methanolic and dichloromethane extracts exhibited the highest antibacterial activity as measured using the zone of inhibition. This was followed by ethyl acetate and n-hexane extracts. At 200 mg/ml concentration, all extracts were considered active when tested with E. coli and S. faecalis, and were partially active against P. aeruginosa. The aqueous extract was inactive towards the three bacteria. The 200 mg/ml concentration showed no significant difference when compared with the positive control, amoxicillin (12.51μg/ml). This shows that Hibiscus rosa sinensis exhibits a promising antibacterial activity. Phytochemical analysis of the active fraction- the methanolic extract- showed the presence of alkaloids, tannins, glycosides, saponins, steroids, flavonoids, terpenoids, and anthraquinones. These bioactive components could be responsible for the antibacterial activity of Hibiscus rosa sinensis leaf extracts.Item A correlational study on the self-evaluation of job performance and job satisfaction among CAS-UPV teachersCabardo, Liberty Rose A. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1997-04)The purpose of this study was to determine the job performance and job satisfaction of CAS-UPV teachers, and to examine the relationship between performance and satisfaction. Specifically, three elements were included in this study: (1) the self-evaluation of job performance among CAS-UPV teachers by division, educational attainment and years of teaching experience; (2) the self-reported job satisfaction among CAS- UPV teachers; and (3) the relationship between job performance and job satisfaction. A non-experimental correlation research design was used in this study. The population of the study consisted of all College of Arts and Sciences (CAS) teachers of the University of the Philippines in the Visayas (UPV), Miagao campus, Iloilo. Out of the 107 possible respondents, 74 respondents returned their questionnaire which had three parts: the PERSONAL INVENTORY PROFILE, the SELFEVALUATION QUESTIONNAIRE ON JOB PERFORMANCE, and the JOB SATISFACTION SCALE. Using the one-way ANOVA, it was found that: (1) there was no significant difference in the self-evaluation of job performance when the CAS-UPV teachers were grouped according to division and educational attainment; (2) there was no significant difference in job satisfaction when the CAS-UPV teachers were grouped according to their respective division; (3) there was a significant difference in the self-evaluation of job performance when the CAS-UPV teachers were grouped according to years of teaching experience; (4) there was a significant difference on job satisfaction when the CAS-UPV teachers were grouped according to educational attainment and years of teaching experience; and (5) there was a significant relationship between job performance and job satisfaction.Item The pharmacological screening of Moringa oleifera Lam.Burgos, Karen J. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1998-07)Moringa oleifera, Lam, or malunggay, belongs to Family Moringaceae. The medicinal value of this plant has long been recognized in folk medicine. Not all the claims, however, are proven scientifically. This study aimed to (1) test the crude extracts from the seeds and leaves of M. oleifera for pharmacological properties and (2) to compare its efficacy with the drugs commonly used to alleviate particular ailment. Phytochemical assay for alkaloid using Culvenor-Fitzgerald method was done to test the presence of alkaloids. The dried seeds and young leaves were extracted with methanol and concentrated under reduced pressure at 45°C. The resulting extracts were partitioned and used for the different assays: Brine shrimp assay for cytotoxicity, Acetic acid-induced writhing assay for analgesic activity, Charcoal tracing assay for antispasmodic activity and paper disc diffusion method for antimicrobial activity. Result showed that only the seeds have alkaloids. Toxicity test revealed that the seeds are practically non-toxic but the leaves were toxic with an LC50 of 550 μg/mL after 24 hours of exposure. Of the two extracts, only the leaves exhibited analgesic activity although not as effective as Mefenamic Acid in reducing pain. The leaf extract, was also found active against Bacillus subtilis, Staphylococcus aureus , Escherichia coli,and Pseudomonas aeruginosa. The seed extract was active only against B. subtilis. Both extracts, however, are not as effective as the antibiotic drug, Amoxicillin. Results also showed that both extracts do not have antispasmodic activity. The study confirmed the antimicrobial and analgesic activities for the use of the leaves of this plant in folk medicine.Item Growing up in culture of gambling: Explaining adolescent students' academic performance using the Theory of Planned BehaviorBurgos, Jaclyn Gay S. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2017-06)Integrating lcek Ajzen’s Theory of Planned Behavior, this study seeks to explain the factors that influence the academic performance of adolescent students. In assessing the academic performance: questionnaires for attitudes towards behavior, subjective norm, perceived behavioral control, and intention were administered to adolescent students (n=88) in rural areas of Iloilo. A Pearson-product moment correlation was used to examine the correlation between the factors and academic performance. There were five participants who joined the focused group discussion and their answers provided an indepth connection of the variables. Results of the quantitative analysis stated that attitude towards behavior, subjective norm, and perceived behavioral control are individually correlated with intention but only attitude towards behavior is significantly correlated with academic performance. The results from this study can be used in schools and related government agencies in shaping students to have a more positive outlook with regards to academic performance.Item Antifungal activities of alginate films incorporated with lemon grass (Cymbopogon citratus) essential oil on sliced breadBronzal, Lucile A. (Department of Chemistry, College of Arts and Sciences, University of the Philippines Visayas, 2018-06)The accumulation of non-degradable and non-recyclable waste materials leads researches to venture on biopolymer films which have been regarded as the promising green substitutes of non-biodegradable plastic materials. However, food products can be subjected to contamination by bacteria and fungi. The addition of plant derived essential oil can control microbial contamination of foods by reducing the growth rate of target microorganisms or by inactivating microorganisms by direct or indirect contact. Incorporating antimicrobial compounds into films provides a different way to improve the safety of ready-to-eat foods. In this study, the efficiency of synthesized alginate films incorporated with lemon grass essential oil (LGEO) for antifungal activity on white bread was evaluated. Two sets of film were prepared the (1) LGEO - Ethanol incorporated films and (2) LGEO — β-cyclodextrin inclusion complex films via solution casting method. Furthermore, the FTIR analysis of the generated films was also assessed to identify the functional groups present in the film that facilitates its antifungal property. Experimental results showed that LGEO enhanced the antifungal properties in the films and significantly slowed down the propagation of fungi on white sliced bread. After two weeks of storage, all bread samples packed with various film samples showed fungal growth. It was found out that citral is the main component of essential oil which contributes to the inhibition of fungal growth. The incorporation of LGEO in the film decreased the O-H peak absorbance while the inclusion complex in the film increases the O-H peak absorbance and broad O-H peaks were also obtained.Item TV exposure and study habits of UPV high school studentsBrasileño, Hazel Alice P. (Division of Humanities, College of Arts and Sciences, University of the Philippines Visayas, 1987-03)This study was conducted to find out the level of television exposure of high school students, to know their study habits, and to find out the relationship between TV exposure and the study habits of UPV high school students. A study was conducted among VP Visayas High School students, where a total of 137 respondents from first, second, third, and fourth year levels provided the major data of the study. A three-page questionnaire was the instrument used in gathering data. It included: respondent’s level of exposure to TV and the student’s study habits. The least part related TV exposure with study habits. Findings revealed that there is 99% television viewer- ship which means that there is a high level of TV exposure among respondents. Number of hours of viewing ranges from 30 minutes to a maximum of six hours. Most of the programs watched were foreign canned shows and were entertainment in nature. Preferred viewing schedule of most students is 7-9 p.m. Findings also showed that most (54%) of the parents imposed restrictions on their children’s viewing, particularly on the number of hours students watched TV. On the other hand, ninety-six percent (96%) of the students studied their lessons. For those who studied majority do 30 everyday for a minimum of 30 minutes and a maximum of three hours. Students preferred to study between 8-10 p.m. Students study mainly to attain high grades. In relating TV exposure and study habits results showed that TV viewing consumes most of the free time of students and that time slotted for study is utilized for viewing the medium. However, TV viewing is also helpful to the students in that it gives them information and ideas which they applied to their lessons. The chi-square test for independence was used to find out if there is a relationship between the two variables TV exposure and study habits. Results showed that there is a relationship between TV exposure and study habits, that is, the more exposed the students are to TV, the greater is the probability that the number of time spent for studying will be lessened.Item International remittances on health expenditures of Filipino householdsBraña, Juan Gabriel P.; Ramirez, Michael Benjamin S. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2024-06)International remittances have become a substantial source of income for recipient households, which are utilized to finance different household expenditures such as consumption expenditures and investments. Previous studies in other countries have determined the impacts of international remittance on households' different expenditure types, but studies on its effect on health expenditures are limited. This study analyzed the marginal effects of international remittances on Filipino households’ health expenditure and its types - medical products, outpatient medical services, and hospital in-patient services, utilizing the 2018 Family and Income Expenditure Survey of the Philippine Statistics Authority. Using the ordinary least squares regression method, the researchers find a positive significant effect of international remittances on household health expenditure and its types. A one PHP increase in international remittances significantly increases the total medical care of a household by 0.026 PHP, the medical products expenditure of a household by 0.014 PHP, the outpatient medical services expenditure of a household by 0.005 PHP, and the hospital in-patient services expenditure of a household by 0.007 PHP. However, the effects of international remittances on Filipino households' health expenditures vary across regions.Item Resist the urge: Exploring the sources of abstinence self-efficacy of drug rehabilitation residents in Iloilo CityBoston, Marycon Anne C. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2017-06)Integrating Albert Bandura’s Self-Efficacy Theory in substance abuse, this study seeks to identify the factors which contribute to abstinence self-efficacy of illicit drug users. In evaluating the sources of efficacy: mastery experience, vicarious experience, social persuasion, and emotional arousal, drug rehabilitation residents (n =139) in Iloilo were administered scales and questionnaires. A Pearson product-moment correlation was utilized to examine the relationship of the sources and abstinence efficacy. Eight residents with the highest and lowest efficacy ratings were interviewed, and two focused group discussions were conducted to provide an in-depth understanding of the relationship of the variables. Results of the quantitative analysis indicated that the four hypothesized sources do not significantly correlate with drug abstinence efficacy. Cognitive appraisal through assessing the difficulty of abstinence, personal control, and the varying interpretation of experiences served as mediators in affecting efficacy. The physical cravings elicited by drug use prevents the residents to develop self-efficacy and be positively influenced by the external factors. Given that self-efficacy can predict future performance or outcome, the findings aid in enhancing rehabilitation interventions crucial for building efficacy and lifetime abstinence.Item Optimization of pretreatment process of lip gloss for the determination of lead by flame atomic absorption spectroscopyBolivar, Eduardo L., Jr. (Department of Chemistry, College of Arts and Sciences, University of the Philippines Visayas, 2013-10)The optimization of the pretreatment process for the analysis of lead in lip gloss using a flame atomic absorption spectrophotometer (FAAS) was proposed in this study. Two variables were tested for this study: volume of nitric acid, HNO3 and volume of hydrogen peroxide, H202. Results of the optimization and statistical analysis revealed that 47.3 mL HNO3 and 2 mL HNO3 were the optimum volumes suited for the digestion of lip gloss in obtaining high analytical results for the lead analysis. Five different samples were randomly purchased from local markets in Iloilo City that may contain high levels of lead due to a report from BFAD that warned people about the use of several lipsticks imported abroad. Lip gloss samples were analyzed using the optimized protocol. The heavy metal content in the lip gloss samples were found to be between 52.0 - 126.3 mg lead/kg of sample. Results show that these were slightly higher than the allowable limits for lead contents in lip gloss set by BFAD and WHO. One-way ANOVA statistics showed that there was a significant difference in the lead contents among the different lip gloss samples.