Undergraduate Theses
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Item Comparison of direct microscopy and concentration techniques using household bleach for the detection of acid-fast bacilli in sputumBernabe, John Marvin S.; Biaoco, Beverly G.; Castillanes, Melvic A.; Fernandez, Ia Jean F.; Geraldoy, Ruffa V.; Molina, Ryge Albert D.; Pluma, Zyra April D.; Que, Agnes Karen B.; Servidad, Mercy Jeane C.; Tamayo, Kyria Mae Marre P. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2008-03-29)Several published studies have demonstrated that the sedimentation and centrifugation concentration techniques which utilize sodium hypochlorite are more efficient in detecting acid fast bacilli in sputum smears compared to the conventional direct smear method. This study was conducted to (1) compare the proportion of AFB-positive samples by direct microscopy with the household bleach centrifugation concentration technique; (2) compare the proportion of AFB-positive samples by direct microscopy with the household bleach sedimentation concentration technique;(3) compare the proportion of AFB-positive samples by household bleach sedimentation with the centrifugation concentration techniques; and (4) compare the cost of the direct smear method, centrifugation concentration technique, and sedimentation concentration technique for detection of AFB. Sputum specimens were collected from TB-DOTS clinics in Miag-ao and San Joaquin, Iloilo and from Medicus laboratories in Iloilo City. The specimens were then processed through the direct smear method, centrifugation concentration method, and sedimentation concentration method. Out of 174 sputum samples included in this study, results revealed that (1) there was no significant difference in the proportions of AFB-positive slides detected using the direct microscopy and centrifugation concentration technique; (2) there was no significant difference in the proportions of AFB-positive slides detected using the direct microscopy and sedimentation concentration technique; (3) there was no significant difference in the proportions of AFB-positive slides detected using the centrifugation and the sedimentation concentration techniques; and (4) simple cost analysis of the three methods suggests that the direct smear method is the most cost efficient. The findings indicate that whichever method is used would yield almost the same proportions of AFB-positive slides. Internal quality control should be maintained throughout the laboratory work to obtain reliable results, as it is the manner of processing that determines the outcome of this study and its validity.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 Fecundity and Oocyte size in the flyingfish (Cheilopogon arcticeps) from Lanuza Bay, Surigao Del SurBelaza, Yeuclaire Dorothy M. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2018-06)The relationship of fecundity and oocyte diameter to body size and other reproductive aspects of the flying fish, Cheilopogon arcticeps in Lanuza Bay were investigated in this study. Gravimetric method or weight method was used in order to estimate the fecundity of 35 mature female C.arcticeps ranging from 17.8-23.6 cm standard length. Total fecundity of C.arcticeps ranged from 1,126 - 41,684 while its oocyte diameter ranged from 0.8 -3.6 mm. The relationship of fecundity to standard length (SL) showed variable results and poor correlation. This may be indicative of a unique reproductive strategy of this species. Egg size to standard length showed an increasing trend but a weak correlation. In general smaller egg diameters were observed in smaller size class SL and bigger egg diameters appear in larger SL. The relationship of fecundity to gonad weight showed a positive linear correlation and increasing data .Thus as gonad weight increases, fecundity increases too. The correlation between fecundity and total length shows a weak relationship, however the correlation between fecundity and gonad weight show a stronger relationship. The present study aim to exhibit additional information on the rare documentation of flyingfish in the country.Item Community structure of riverine mangrove stand in Brgy. Talokgangan, Municipality of Banate, Iloilo ProvinceBelaño, Keith Dominador L. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2001-04)The community structure of riverine mangrove stand in Brgy. Talokgangan, Municipality of Banate, Iloilo was studied. Ten “true” mangrove species representing seven families were encountered in the “mangals” of Balandra creek community in Brgy. Talokgangan. They were Avicennia marina, Avicennia lanata and Avicennia alba representing Family Avicenniaceae; Rhizophora apiculata and Rhizophora mucronata under Family Rhizophoraceae; Sonneratia alba of the Family Sonneratiaceae; Excoecaria agallocha under Family Euphorbiaceae; Camptostemon philippinense of the Family Bombacaceae; one from the Family Meliaceae namely Xylocarpus granatum, and Family Palmae represented by Nypa fruticans. Stand Basal Area was computed highest in Station 1 with 10.22 m2/ha. Station 1 was also the densest among the four stations with a density value of 2533 trees/ha. In terms of data evaluated per zone, the landward zone has a Stand Basal Area of 10.87 m2/ha which is slightly higher than the middle and riverward zones. The middle zone, however, was found to be the densest with 1850 trees/ha. The most dominant station was Station 1 with the highest Index of Dominance of 0.3319, however, was found to be the least diverse station. The highest Index of Diversity was computed in Stations 2 and 3, with diversity indices of 0.8976 and 0.8989 respectively. Avicennia marina was found common in all stations and the most dominant, making it the most important mangrove species. They were found to occupy the whole site, growing abundantly in wide range of conditions from areas frequently inundated by tidal flow in Station 1 to the firmer muddy substratum in the back mangrove areas. Rhizophora apiculata and Rhizophora mucronata was observed to occupy waterlogged soil conditions. Excoecaria agaliocha tend to flourish in firmer muddy substratum in open sites, whereas, Xylocarpus granatum was observed to occupy zones where salinity is lowest in areas rarely affected by tidal flow. Sonneratia alba and Camptostemon philippinense tend to grow in zones directly inundated by tidal flow.Item The effect of seaweed (Kappaphycus alvarezii) as a partial substitute for commercial feed on the growth of chickenBedia, Alma Mae S. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1994-08)The study determined whether the use of seaweed (Kappaphycus aIvarezii) in different amounts as a partial substitute to commercial feeds would enhance the growth of chickens, reduce feed consumption, increase feed efficiency, and increase profit. The chickens were first fed with commercial broiler starter mash feeds for 15 days. Then, on the 16th day to the 35th day, the chickens were fed with different combinations in 1:1, 1:2, and 1:3 ratios of commercial broiler finisher feeds to K. alvarezii. Chickens fed with purely commercial broiler finisher feeds served as the control. Feed consumption, liveweight gain, and feed efficiency were computed every three days, while Profitability was determined at the end of the experimental period. Results showed that the use of K. alvarezii as a partial substitute to commercial broiler finisher feeds in a 1: 1 ratio increased the profit as well as the growth of the chickens, and it is comparable to that in the control (fed with purely commercial broiler finisher feeds). When the amount of K. alvarezii in the feed ration is more than 50% (1:1 ratio), it was observed that it would hamper the growth of the broilers.Item The degree of potency of emojis to substitute the written language in Facebook MessengerBechayda, Kristelle Mae S.; Jaruda, Ma. Ella Dean R.; Pavillar, Gliza Mae D. (Division of Humanities, College of Arts and Sciences, University of the Philippines Visayas, 2018-04)This is an undergraduate study of how potent the emojis are in substituting the written language in Facebook Messenger. Purposive sampling was used in determining the 127 respondents in Iloilo National High School. Survey questionnaires were utilized in gathering the data. By using Kincaid's Convergence Model of Communication, Semiotics Theory and Uses and Gratification Theory, the researchers used descriptive method to analyze the potency of emojis by studying the respondent’s mutual understanding on their use of emojis. Mutual understanding is further determined by getting the individual field of experience of each respondent. The field of experience in this study includes the level of knowledge on the use of emojis, commonly used emojis, reasons why they use emojis and the capability of emojis in conveying messages. The findings of the study showed that emojis are highly potent in substituting the written language in Facebook Messenger.Item The agricultural education outreach project in Aklan: Barangay Sibalew, BangaBautista, Reynold R. (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1992-07)This study uses the concept of agricultural extension as a catalyst of change for rural development. Suffice it to say, the objective of agricultural extension is to provide the rural people the appropriate information, technology and values to make them self-reliant in the context of their own environment. However, the realisation of this goal is dependent on the extent of acceptance and participation of the rural people themselves. In this study, the Aklan Agricultural College-Agricultural Education Outreach Project in Aklan is supposed to bring self- reliance among the farmers of barangay Sibalew, Bangs by effective transfer of appropriate technology. Based on the principles of extension service, it has been determined that the A.E.0.p project in Sibalew, particularly its economic and social services, has been instrumental in improving the productivity and income and broadly, the social and economic aspects or the farmers life. Needless to say, the A.E.0.P-introduced technologies have been embraced by the majority of farmers in the barangay--which exemplifies the effectiveness of the A.E.O.P project.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.