Undergraduate Theses
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Item Karyotype analysis of Kutsay Allium odoratum L. (Alliales: Alliaceae)Bermejo, Jo-am Asis (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1995-05)The C-metaphase count of Allium odoratum revealed that the chromosome number was 2n=32, consisting of the following centromeric groups based on Levan's method of chromosome classification: Group I chromosomes with subterminal centromeres (1 pair); Group II with submedian centromeres (2 pairs), and Group III with median centromeres (13 pairs). The mean total lengths of chromosome ranged from 8.534±0.504-16.624±0.600 μ. Mitotic index for the species was found to be 10.87%.Item Agrarian reform implementation in Barangay Indag-an, Miag-ao, IloiloBeñosa, Zoraida P. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1996-03)Agrarian Reform is a program set by the government to correct socio-economic imbalances by distributing lands to the farmers who are landless It is a means of uplifting the farmers from social inequalities and the bondage of poverty. Given the nature of the program, it is therefore important to assess the effectiveness of Agrarian Reform Implementation in the community level. Specifically, this is a study of Agrarian Reform Implementation in barangay Indag-an, Miag-ao, Iloilo. The objectives of the study are to describe the processes involved in the implementation of Agrarian Reform in Indag-an, to identify the benefits and support services extended by the program to its beneficiaries, to assess the effectiveness particularly the strengths and weaknesses of the program as perceived by its beneficiaries, to describe the relative effects on male and female household members and lastly, to draw implications on how to improve the Agrarian Reform implementation in the community level. Given these objectives, data were gathered from 35 respondents through a focus group discussion method. Personal interview and a case study were also done to assess the effectiveness of the program. The findings revealed that some beneficiaries believed that they benefitted from the program. Others, however, were a bit cynical towards its implementation. They claimed that the program was biased in Its implementation wherein it caters to the demands of the landlords disregarding the needs and problems of the farmers concerning the distribution of lands. The study further revealed that the support services extended by the program to farmer-beneficiaries centered mainly on agricultural extension, agricultural credit, education and trainings, cooperatives and legal services. Other support services such as infrastructures, health assistance, potable water supply and irrigation system were not provided by the program. As to the strengths and weaknesses of the program, it has been found out that the farmers repressed an ambivalent view about its implementation. They perceived the program as both having strengths and weaknesses wherein the former focused mainly on the processes involved in the distribution of lands while the latter focused more on the insufficient support services provided by the program. Finally, the study revealed that majority of the beneficiaries was male and women beneficiaries comprise only a small number. The male beneficiaries dominated the farm works, relegating women to household chores and aspects of farm work such as planting, weeding, preparing and bringing the food to the fields. However, women were given the opportunity as men in giving opinions, airing their views in the organization. Generally, both had gained from the program, where each has his/her role in farm production, even though the extent of their benefits variesItem Social responsibility on the use of media technologyBeloya, Marian Kristina C.; Camancho, Rea Micah C.; Perez, Mary Lydannie V.; Villanueva, Ma. Emilie M. (Division of Humanities, College of Arts and Sciences, University of the Philippines Visayas, 2005-10-21)This study is about responsibility on the use of media technology specifically cellular phones. The study is done through a survey measuring on respondents’ behavior and awareness of social responsibility pertaining to the use of cellular phone. Residents of UPV Miagao dormitories (Balay Apitong, Balay Gumamela, Balay Lampirong, Balay Kanlaon, and Balay Madyaas) were chosen as respondents to the study. The results of the study show that the respondents are Aware of their social responsibility but they are Sometimes responsible in using their cellular phone and as senders and receivers. Therefore, the UPV Miagao dormitory residents are Quite Socially Responsible on the use of media technology specifically cellular phones.Item Histomorphological study of the gonads of Pholas orientalisBeluso, Michelle O. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1994-04)A total of five "diwal", Pholas orientalis, two of which wore obtained from Hinigaran, Neg. Occ. on January 1995 and three from Lanas, Barotac Nuevo on February 1994, were examined for the histomorphological study of the gonads of the species. Among the five samples, two were males and three were females. No hermaphrodites were encountered. Macroscopical examination showed that the gonads were diffused in the visceral mass extending from the anterior to the posterior part of the animal. The gonads were arborescent in form and creamy in color. No external sexual differences were observed. Histological examination showed that male and female gonads were scattered in the visceral mass and concentrate most around the stomach. Male and female gonads consist of follicles which were lobular and embedded in the connective tissues. Three sexual maturity stages were observed among the five specimens, which are the late active, ripe, and partially spent stages. During the late active stages in both male arid female gonads, developing gametes (spermatocytes and young oocytes, respectively) are attached to the follicular wall with maturing gametes lying free in the follicular lumen. At the ripe stage, male gonads showed mature sperms free in the follicle lumen with sperm tails radiating into the center of the lumen. In females, ripe oocytes are free in the follicle lumen with some maturing oocytes still attached to the folli- cular wall by a slender stalk. Partially spent stage was observed only in females. Spent gonads showed spaces in ovarian follicles due to loss of ova through spawning (1938). Since there is a growing demand for "diwal", interest on this species had picked up lately. One of the earliest studies on P. orientalis was the study on the "diwal" fishery in Neg. Occ. conducted by Ablan (1938). The larval biology and mariculture of the angelwing clam, Cyrtopleura cos- tata, were studied by Gustafson, et al. (1991) and investigations into spawning and hatchery technique for P. orientalis are underway (Gustafson, et al., 1991). Studies on the biology of P. orientalis are few and in fact no literature regarding reproductive biology of the species was obtained. Thus, this study was carried out with the following objectives: (1) to determine the location of the gonads in the visceral mass of P. orientalis, (2) to describe the histomorphology of the gonads, and (3) to differentiate the gonadal conditions histologicallyItem The socio-economic profile of the saltmakers in Barangay San Rafael, Manudurriao, Iloilo CityBedonia, Rosie J. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visaya, 1986-12)In general, the study was conducted to find out the socio-economic conditions of saltmakers in Barangay San Rafael, Mandurriao, Iloilo City. Specifically, the objectives of the study are: 1) to know the process of making salt in Barangay San Rafael; 2) to know the social- economic, and demographic characteristics of saltmakers; 5) to determine the membership and participation of salt- makers in organisations; 4) to know the problems of saltmakers regarding their work; and, 5) to be able to make recommendations based on the findings of the study. The study was conducted in Barangay San Rafael, Man— durriao, Iloilo City, where the salt industry is located. The respondents of the study are limited only to saltmakers who are residents of the said barangay., Third— ty (30) respondents were chosen as sample for the study through the use of the simple random sampling technique. An interview schedule was used to gather data and was administered by the researcher herself. Simple frequency counts, percentages, and averages were used to describe the socio-economic and demographic profile of saltmakers. The results of the study revealed that the process used in making salt in Barangay San Rafael is a conventional solar process used in making evaporation of seawater. The results also revealed that most saltmakers are working full-time, and have low education, host of the respondents belong to a nuclear type of family composed of a father, mother, and children. The total number of household members is 151, with an average size of six (6) members. Most of their household members are going to school, and there are more who are in the elementary level. The average household monthly income of saltmakers is Pl,500.32, 30 percent of which comes from saltmaking alone. Their average household monthly expenditures is Pl,000.52. They also live in a house that is semi-permanent, which ismade up of bamboo, lawanit, and galvanized iron. Their common household furniture is a radio. From the results of the study, the researcher concludes that the saltmakers are more or less within the poverty threshold of income. This conclusion is supported by Hr. Bernardo Villegas of the Center for Research and Communication. He said, “For a family of six (6) to live in animal or biological existence means the ’whole family has to earn an income of P2,000 a month." Most of the saltmakers are members of various community organizations like the Barangay Tanod (33%), Barangay Council (20$), Barangay Health Organization (1O%), and the Lupon (10%). Out of 18 saltmakers who are members of organizations, thirteen (13) belong to the high-income group and five (5) to the low-income group. This implies that the higher income group have the tendency to join organizations more than those of the low income group. However, the study revealed that the low-income groups are more active in their participation in organizational activities than the high-income groups. The common problems confronting the saltmakers are their low salary and the difficulty to find a job during rainy season when the salt industry stops its operation. Based on the results of the study, the researcher would like to recommend that the government should take steps in developing the salt industry in the country as there are more people who are dependent on saltmaking for their subsistence. The government must do something to encourage more capitalists to invest their money in salt- making so that the people in the poverty-stricken communities along the seaside will have source of income for their living. The government should help the saltmakers find jobs during rainy season as saltmaking can only be done during dry season. Lastly, the researcher recom- mends to the saltmakers of Barangay San Rafael Mandurriao to form a group and work together to demand an increase of salary from the salt bed owners.Item Marketing of milkfish fry in Pandan, AntiqueBayaras, Dinah A. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1995-03)This study describes and analyses the marketing, channels, functions/practices, costs, margins, and shares received by each marketing channel, net price of milk-fish fry received by fry catchers, and the problems encountered in the marketing of milkfish fry in Pandan, Antique. Using a separate interview schedule for each kind of respondent, 40 fry catchers are asked about their latest catch on a per-day basis, and the ten middlemen were interviewed about their last transaction/s. Results showed that from the fry catchers, the 4,218 milkfish fry are sold to three types of middlemen: the commissionman, wholesaler and facilitative organization. Fifty-nine percent of the milkfish fry go to the facilitative organisation, twenty-three percent to the commissionman, and eighteen percent to the wholesaler. From the three types of middlemen, only 86 7, of what they’ve purchased were sold of the 3,610 milkfish fry sold, 55% of it go to the wholesaler/retailer. Others go outside of the municipality. All of the wholesaler/retailer purchases go outside of the municipality. The pre-sale practices performed by the fry catchers include gathering, counting, sorting, storing, and transporting, while the middlemen perform counting, sorting, storing, packaging, and transporting. In performing the five pre-sale practices by the fry catchers, the cost of P16.95 is incurred. These are all noncash costs. The cost of P4.0012 for the depreciation cost of marketing investment items and the mortality cost of P12.95 - This includes the allowance for mortality given to the buyer as well as the actual deaths of milkfish fry - are the composition of the marketing costs. The net. The price of milkfish fry is P0.24/piece. But 23% of the opportunity cost of labor was forgone. The pre-sale practices performed by each type of middleman involved in the marketing of milkfish fry accumulated a distinct cost for each type. For the commissionman, he has a total of P87,3367 marketing cost. The wholesaler incurred — 117.996, the facilitative organization has P570.4867, and the wholesaler/retailer has Pl,365.7987. The middleman who has the highest net return in terms of percentage of average revenue is the commissionman (70.62%), followed by the wholesaler (69.76%), then the facilitative organization (57.89%), and the smallest is received by the wholesaler/retailer (37.54). followed by the facilitative middleman (P0.21), and then the In terms of gross margin received by each type of middleman, the highest shareholder is the wholesaler /retailer (P0.28), then the wholesaler (PC, 23), and the commissionman (P0.06). The problems of poor transportation facilities, insufficient capital, communications in pricing, excessive mortality rates, and the absence of a buyer are the bottlenecks in the marketing system. These problems produce a bad outcome for the middlemen by increasing their losses.Item Small farmers' adoption of rice combine harvesters in Binalbagan, Negros OccidentalBayona, Kate Ashley S.; Solano, Mirjana Antoinette (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2024-06)The use of Rice Combine Harvesters (RCH) is currently pushed as part of the country's mechanization program in agriculture. Much of the literature assessing the adoption of RCH only focuses on the tangible determinants of their adoption, but not the in-depth sociological lived experience of farmers following their adoption, including their nuanced rationalization amidst the process. This study investigated the RCH adoption among small farmers in Binalbagan, Negros Occidental, specifically delving into the (1) characteristics of farmers, (2) drivers of RCH adoption, (3) challenges faced during adoption, (4) nature of frequency and consistency of RCH use, and (5) adjustment strategies in using the RCH pursued through descriptive phenomenology and an in-depth interview of 12 participants through purposive sampling. Thematic analysis revealed that the small farmers belong to the early majority adopter category whose adoption is highly facilitated by membership in Irrigators’ Associations and lack of manual laborers. The regularity of their usage also depended on climate, laborers, topography, and farm systems and confronted issues with wastage, additional cost and labor, and field damage to RCH that was mitigated through mediating previous and current farm set ups and maintaining affirmative social relationships within the community. These findings depict the complexities in small fanners’ RCH adoption and the intricacies of their receptivity in each region calling for larger analysis of RCH adoption in the country to know its general status and underscores the need for the implementation and development of national policies like technology diffusion to be contextually sensitive and pro-farmers.Item Optimization of parameters for the Fe-humic acid complex formation using cyclic voltammetryBautista, 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.Item Isolation and partial characterization of globulin from Cassava (Manihot esculenta Crantz) tubersBarbosa, May R. (Division of Physical Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2007-04)Soluble globulin was isolated using an extraction buffer (0.4 M NaCl in 35 mM potassium phosphate buffer, pH 7.6 with 0.02% Na azide). The isolated globulin was subjected to solubility tests with different NaCl concentrations. It has the highest solubility in 1.25M NaCl (1.09%), but no significant differences existed among the NaCl concentrations by analysis using one-way ANOVA at a = 0.05. Three major bands existed at LOOM NaCl dissolved globulin with molecular weight ranges of 28-33kDa, 38- 43kDa, and 65-70kDa relative to BSA. Two of these bands (38-43kDa and 65-70kDa) were observed in 0.50M and 0.75M NaCl soluble globulin. The 1.25M and 1.50M NaCl concentrations gave a single band (28-33kDa) each, while no clear bands were observed in other NaCl concentrations. Amino acid analysis revealed glutamic acid (12.09%) as the most abundant amino acid component of cassava globulin. Nine (9) essential amino acids were present. Of these nine, lysine (10.50%) is the most predominant. Cystine (0.39%) has the lowest percentage, followed by methionine (1.76%).Item Hydrogel composites loaded with plant extract as an antibacterial and quorum sensing inhibiting wound dressingBaranda, Marivic M. (Division of Chemistry, College of Arts and Sciences, University of the Philippines Visayas, 2018-06)Delayed wound healing is often caused by bacterial infection. Furthermore, the persistent inflammation brought by the formation of biofilm via quorum sensing causes pain and discomfort. In a novel effort, this study fabricated an antibacterial and quorum sensing inhibiting hydrogel dressing loaded with plant extracts. KC-PVP hydrogel composites were loaded separately with lg/mL C. longa and H. durvillei extract under optimized conditions. The hydrogels were characterized through swelling test and FTIR analysis. It was determined that C. longa-loaded and H. durvillei-loaded hydrogels have a maximum swelling capacity of 175% and 135%, respectively. The antibacterial efficacy and the quorum sensing inhibition activity of extract-loaded hydrogels were evaluated using soft-layer agar well diffusion method. Hydrogel loaded with C. longa extract displayed 47.0 (±1.0), 45.0 (±1.0), and 32.33 (±0.58) mm mean growth inhibition against S. aureus, E. coli, and P. aeruginosa, respectively. H. durvillei extract-loaded hydrogels inhibited the growth of S. aureus, E. coli, and P. aeruginosa by 45.33 (±0.58), 43.67 (±1.52), and 33.33 (±0.58) mm in diameter, respectively. The quorum-sensing inhibition zone of C. longa extract and H. durvillei extract-loaded hydrogels were 49.63 (±0.40) and 49.37 (±1.11) mm in diameter, respectively. Overall, the extract-loaded hydrogel composites exhibited good antibacterial and quorum-sensing inhibiting activity, potentially for wound treatment.