UPV Digital RepositoryUPV-DRUniversity of the Philippines Visayas
 

Undergraduate Theses

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14583/13

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End date: 2019Discipline: search.filters.discipline.Major in Economics-Management

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    A preliminary study on the extraction of alginic acid from three species of brown algae: Sargassum polycystum, Sargassum cristaefolium and Turbinaria sp. in Taklong Is.,Guimaras
    Adelantar, Geoffrey V. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1996-04)
    Three species of brown algae were harvested in Taklong Is., Guimaras. These were Sargassum polycystum, Sargassum cristaefolium, and Turbinaria sp. These brown algae were subjected to physical and chemical treatment to extract and compare the amount of their alginic acid in the form of sodium alginate. Four seaweed collections for extraction were made between August to December, 1995. Values obtained during the first three extractions gave almost similar results. S. polycystum exhibited the highest percentage yield of sodium alginate with a mean of 22.84%. It was followed by S. cristaefolium at 22.21%. Turbinaria sp. gave the lowest yield with a mean of 14.12%. The last extraction somehow showed a decrease in the percentage yield of all three samples. S. polycystum yielded just 20.00%, S. cristaefolium at 19.00% and Turbinaria sp. at just. 10.10%. Several factors may have contributed to the differences in the amount of alginic acid of the three species of brown algae. Among these are the inherent capability of the different species of brown algae to produce alginates, the thickness and sturdiness of the samples, the viscosity of the extracts, and seasonal changes.
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    Economics of copra production in selected barangays of Buenavista, Guimaras
    Aranda, Odessa T. (Division of Social Sciences, College of Art and Sciences, University of the Philippines Visayas, 1996-11)
    This paper provides a background and baseline information on the prevailing profile of copra production and profitability with the use of thirty-five producers based in Buenavista, Guimaras. This study also gave an overview on the problems encountered by copra producers and provided recommendations for the improvement of the local copra industry. Costs and returns analysis showed that average costs in copra production was P9.14/kg. Of the average costs, average fixed costs, average variable costs, and opportunity costs accounted for .33%, 26.59%, and 73.08%, respectively. Average fixed costs was P.03/kg where a third (33.33%) can be attributed to depreciation costs (P.02/kg). As to the average variable costs of the respondents, P2.43/kg was incurred which was primarily attributed by cost of hired labor (P89.71). Opportunity costs/kg for all producers was P6.68. The major opportunity costs (81.44%) was the implicit cost of coconuts. Average revenue was P9.43/kg. As a whole, the respondents gained P6.97/kg financial profit. Meanwhile, gross profit was P7.00 for all respondents. Copra producers in Buenavista, Guimaras earned a positive P0.29/kg economic profit. Payback period of 4.56 years, 7.30% return on investment, and 11.93% return on variable costs were other measures used to deterimine profitability in copra production.
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    Fears of Doña Montserrat Lopez Memorial High School students, Silay City, Negros Occidental
    Arcenas, Maricar D. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1994-04)
    The study focuses on the different types of fears of Doña Montserrat Lopez Memorial High School students in Silay City, Negros Occidental. The aim of the study is to identify the different types of fears of Doña Montserrat Lopez Memorial High School students? to determine the most intensely Feared abject and the least intensely feared object on every fear category. For every gender, per year levels and to determine whether there is gender difference on the reported intensity for each type of fear, per year level. There were 245 respondents, 85 of which were Freshmen, 51 were Sophomores, 64 were Juniors, and 45 were Seniors. The respondents were selected through stratified random sampling using proportional allocation. The design that was used in this study is the survey. A questionnaire and a checklist were used to identity the different types of fear of the respondents and the trend of its intensity. The trend of the intensity on the different types of fear were measured using the formula of the average score and the T test formula. The findings showed that Doña Montserrat Lopez Memorial High School students have fear of supernaturals, animals, nature natural calamities; man-made calamities; means oF transportation; places; fear of certain criminals; and fear of crimes. The intensity report showed that there are similarities and differences on the reported most intensely feared objects and least intensely feared object on the different fear categories, per year level. Furthermore, the result of the study also showed that there is no gender difference on the intensity report on most feared objects per year level.