University Knowledge Digital Repository UPLB (University of the Philippines Los Baños)

University Knowledge Digital Repository UPLB (University of the Philippines Los Baños)
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    FORTIFICATION OF PASTA DOUGH USING SWEET POTATO (IPOMOEA BATATAS) LEAVES PURÉE

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    Pasta is a carbohydrate-rich food item known for its versatility and high marketability. It is often used as a substitute for rice and bread due to their almost similar nutritional values. But since it is of high carbohydrate value, consumers are concerned of how such characteristic can affect their health. Therefore, innovations such as using unconventional and functional ingredients in the formulation of pasta were made into incorporate nutrient-dense ingredients to the food item. To analyze the effect of adding vegetables to the pasta formulation, three pasta treatments with purée made from 35 g, 45 g, and 55 g of sweetpotato leaves were evaluated through a sensory evaluation, emphasizing their aroma, color, taste, and texture. Using a 5-point hedonic scale, 50 participants rated the treatments, and were then statistically analyzed using One-Way Analysis of Variance and Tukey\u27s Honestly Significant Difference Test to distinguish which among the treatments has the most acceptable pasta characteristics. Aside from sensory acceptability, approximate nutritional values and cooking characteristics (i.e. swelling index and water absorption) were also noted, as based on the most recent existing literatures. The study which used treatments with 35 g, 45 g, and 55 g of sweetpotato leaves, showed that pasta dough fortified using sweetpotato leaves purée made from 45 g of sweetpotato leaves got the highest mean rating, with the most acceptable qualities, specifically aroma, color, taste, and texture

    Changes in the dietary and lifestyle habits of selected households in Santa Rosa City, Laguna during the COVID-19 pandemic

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    Diet and lifestyle play a significant role in the health and well-being of individuals. However, as they are highly modifiable, factors that may negatively affect them must be observed, one of which is the unexpected occurrence of the COVID-19 pandemic. As the changes brought about by the pandemic may have influenced dietary and lifestyle patterns, a study regarding these possible changes would be relevant and helpful during these times. Because households suffer the most from the restrictions and deviations brought by the pandemic, this study generally aimed to determine the changes in the lifestyle and dietary habits of selected households in Santa Rosa City, Laguna during the COVID-19 pandemic. To fulfill this objective, the study employed a descriptive design and utilized purposive sampling. An online questionnaire was published through Google Forms and 66 household representatives were obtained as participants of the study. Using descriptive statistics, the study concludes that the COVID-19 pandemic has varying effects on the lifestyle and dietary habits of the selected households; there were numerous positive changes, but there were also a few unfavorable changes. Using the eta coefficient, the study further concludes that income influences lifestyle and dietary habits as a strong association was found between household income and the changes in the households’ lifestyle and dietary habits during the pandemic. It is recommended that future researchers consider the inclusion of more variables per category of lifestyle and dietary habits to gauge more accurate data. Additionally, the inclusion of body mass index as an actual indicator of the effects the pandemic has brought to lifestyle and dietary habits is also suggested. Meanwhile, retention and coming up with more positive lifestyle and dietary habit changes are recommended to the participants of the study

    The effects of corporal punishment on the relationship between selected College of Human Ecology students and their parents

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    Corporal punishment is a disciplining method children experience which is a problem since multiple studies found that it causes negative long-term effects (i.e. behavioral problems, psychological problems, etc.) According to Save the Children UK (2005), 85% of the children surveyed in the Philippines experienced corporal punishment at home. Although other research shows the prevalent use of corporal punishment in the country, there isn’t much literature exploring the negative effects in the Philippine context. Thus, this study explored if corporal punishment has negative effects on parent-child relationships in adulthood by conducting a survey among college students in the Philippines. The study adopted two sets of questionnaires, (1)Parent Adult-Child Relationship Questionnaire, and (2) ADULT Physical Punishment Questionnaire (ADULT PPQ). The finding reveals that the majority of the students surveyed experienced corporal punishment as a child (58.8% were punished by mothers and 57.8% were punished by fathers). Furthermore, the survey showed that the participants still have a relationship with their parents in adulthood. The study concluded that the different categories of corporal punishment negatively affected the specific factors in the parent-child relationship. The evidence provided by the study encourages parents, guardians, and people with authority over children, to stop the use of corporal punishment as a disciplining method since there are other alternative disciplining methods that can be used due to the abundant research stating the negative effects of corporal punishment

    Protective Responses of the Intestinal Epithelial Cell Line HT-29 Cells Exposed to Dephosphorylated Salmonella Flagellin [RESEARCH NOTE]

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    This study aimed to describe the effects of Salmonella Typhimurium flagellin (SFL) dephosphorylated by sweet potato purple acid phosphatase (PAP) on the protective responses of the intestinal epithelial cell line HT-29 cells. The enzyme was reported to display a broad substrate specificity for various organic phosphorylated conjugates and phosphoproteins. Dephosphorylation of SFL by sweet potato PAP decreased to 35% in the presence of 0.05 mM vanadate as compared with the negative control (p \u3c 0.05). Intact SFL and the SFL treated with sweet potato PAP did not remarkably induce the activation of caspase-3 in HT-29 cells at all the tested levels of the substrate. Intact SFL maximally induced the release of IL (interleukin)-8 in HT-29 cells at 1000 ng/mL (p \u3c 0.05). However, the SFL treated with the enzyme inhibited the release of IL-8 at over 100 ng/mL of the substrate as compared with intact SFL, resulting in an approximately 8-fold decrease even at 1000 ng/mL (p \u3c 0.05). The SFL treated with the enzyme decreased the activation of the total ERK1/2 in the cells to 1.9 and 1.7–fold at 10 and 1000 ng/mL of the substrate, respectively, as compared with intact SFL (p \u3c 0.05). In conclusion, sweet potato PAP could be a promising tool for controlling excessive inflammation during Salmonella infection in animal husbandry, and the enzyme could be a safe alternative that can overcome the drawbacks of chemotherapy

    Numerical Quantification of Surface Runoff and Soil Erosion using PCRaster

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    Surface runoff and soil erosion of the Upper Lagawe River Sub-watershed, Ifugao Province, Philippines were quantified using Geographic Information Systems (GIS)-based numerical simulation. PCRaster software was used as a framework for the model. Manning’s and Rose, and Freebairn’s Equations were utilized to compute surface runoff velocity and sediment mass. Analysis and comparison of the measured and predicted streamflow yielded a mean Nash and Sutcliffe Efficiency Index of 0.70, a mean percent bias of -8.38%, and a mean root mean square error (RMSE) of 0.16. Based on the model, super typhoon Lando (international name: Koppu) generated an estimated surface runoff volume of 186000 m3 and an estimated sediment mass of 36587 kg for the entire sub-watershed. The mass of eroded sediments equated to 18.6 kg/ha of erosion rate just for the said super typhoon. Stable ecosystems, such as the Upper Lagawe River Sub-watershed, where forest vegetation is intact and farmers practice soil conservation techniques are still vulnerable to the effects of extreme rainstorm events, can generate voluminous surface runoff and eroded sediments

    Adaptive leadership in local responses to COVI D-19: Cases of the cities of Santa Rosa and Valenzuela, Philippines

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    The Coronavirus Disease (COVID-19) created a disruption to the global landscape that called for the quick response of key governance actors, specifically an adaptive approach by the local leaders. In this study, we analyze strategies of two local chief executives to draw insights about how adaptive leadership practiced in the context of two cities in the Philippines deemed to excel in managing the pandemic at the height of its onslaught. Owing to COVID restrictions at the time of the study, secondary data from various social media accounts, local government portals, and news websites were utilized together with the accounts from a university webinar in which the mayors presented their leadership experiences. The data were analyzed using Mulder\u27s four dimensions of adaptive leadership. Findings show that during a pandemic, leadership may deviate from a traditional to an innovative, adaptive form. The study documents the various strategies employed by the mayors, from which other local chief executives in similar crisis response and management contexts may draw leadership and governance insights. This article is a preliminary inquiry on adaptive leadership in local governance seeking to invite further discourse on the role of adaptive leadership in an increasingly volatile, uncertain, complex, and ambiguous world

    Spray characterization of an unmanned aerial vehicle for agricultural spraying

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    Sustainability and higher efficiency in crop production are possible with the use of new technologies. The use of unmanned aerial vehicles brings many advantages both in terms of monitoring agricultural areas and pesticide applications. This technology allows us to detect diseases and damages in an early manner and apply them in areas that are not accessible by conventional sprayers. However, a lack of knowledge on how to use UAVs and what parameters need to be considered prevent the widespread use of drone technology in agriculture. This study established parameters for spraying with clean water using a DJI Agras 14 MG-1P (RTK) Unmanned Aerial Vehicle. Droplet distribution and droplet analyses were examined in the studies carried out at different heights (1.5, 2.0, and 2.5 m) and flow rates (10, 15, 20, 25, and 30 L/ha). Droplets were analysed using DepositScan. Coefficients of variation of droplet distribution tend to decrease with the increasing spray rate. The trials with the closest values to uniformity are spraying applications made with a flight height of 2 m. When we evaluate pesticide efficacy according to the number of droplets per unit area, insecticides and all herbicides can be effective at applications with flight heights of 1.5 and 2 m and spray rate of 20 L/ha. While all spraying is done with flight heights of 1.5 and 2 m and spray rates of 25 L/ha, fungicides are ineffective when applied from 2.5 m height. As a result, this study found the measurements made at 2 m altitude and 20 L/ha spray rate have the highest coverage rate and lowest drift potential

    Households\u27 Willingness to Pay for a Solid Waste Management Collection Service in Brgy. San Jose. Rosario, Batangas

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    With the increasing waste generation and disposal problems faced by countries, communities must be responsible in adhering to proper solid waste management practices and refrain from improper disposals such as burning wastes and open dumping in land and water bodies. Employing a Contingent Valuation Method (CVM), this paper determines the valuation for a solid waste management collection service in Brgy, San Jose, Rosario, Batangas following a random distribution of the survey questionnaire among 232 household heads. With the use of logistic regression analysis, three variables were found to be statistically significant in affecting households\u27 WTP for a SWM collection service--bid amount, sex, and distance to the nearest paved road. These variables share a negative effect on WTP. Further, using the Turnbull estimator, households\u27 willingness to pay for a solid waste management collection service in the community is elicited to be equal to Php 53.57 based on the treated data. This amount will be collected monthly from households in the community for the next 5 years through a garbage collection fee. From this value, the community can generate an estimated annual garbage collection revenue equivalent to Php 328,808.35, which covers almost 21 % of the program\u27s cost. This coverage will significantly help fund the program\u27s implementation; hence, should be considered by the LGU of the community

    Measuring self-regulated learning skills of UPLB students enrolled in HK 12 Walking for Fitness

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    This paper aims to develop a questionnaire that measures the self-regulated learning skills of students enrolled in HK 12 Walking for Fitness, which was offered in a mode of blended online learning and distance education. All students enrolled in HK 12 Walking for Fitness for the first and second semesters of the academic year 2021 to 2022 at the University of the Philippines Los Baños (UPLB), were invited to answer the self-reported questionnaire via electronic mail or e-mail. Out of the 1,168 students, 117 or 10.02% participated. The reliability of a scale and Principal Axis Factoring were calculated in validating the two parts of the questionnaire. The first part is the scale in choosing the preferred Mode of Learning. It has five items with Cronbach’s Alpha of α = .938. The second part is the scale in measuring Self-Regulated Learning Skills which has 17 items with Cronbach’s Alpha of α = .832. This scale is divided into four factors: Time Management and Effort Regulation, Self-Evaluation, Help-Seeking Strategy, and Task Strategy. The questionnaire can be used to identify if the mode of learning pertains to the student’s self-regulated learning skills in performing activities under the walking for fitness program. It can also be used for other activities that use mobile phone applications to guide mobility and execute exercises such as the Pacer Pedometer and Step Tracker Application. It is also recommended to develop a questionnaire that measures motivational strategies in self-paced learning offered in elective human kinetics activity

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