Digital Commons Network^™

Evaluating The Absorption Capacity And Ph Level Properties Of Varying Ratios Of Garlic (Allium Sativum) And Onion (Allium Cepa) Peels For The Absorbent Core Of Sanitary Napkins, Rhys Mari C. Cortezano, Jezreel Keren C. Manait, Avryl Charlizze P. Sampan, Alyannah Dennise C. Castro, Isabelle C. Romero, Denise Diosa P. Dela Peña, Denisse C. Delfin, Fresie Camille O. Abonal, Samantha Louisse M. Sarmiento, Kenneth Andre E. Pascual

DLSU Senior High School Research Congress

Considering the need for sustainable and enhanced menstrual hygiene products, this study aimed to assess the absorption capacity and average pH value of varying ratios of onion (Allium cepa) and garlic (Allium sativum) peels in developing an eco-friendly absorbent core for sanitary napkins. Employing a pre-experimental one-shot case design, the experimental group is subjected to pH and absorbency tests. The evaluation focused on measures of absorbency and pH levels of the sanitary napkin cores made from three different fiber ratios: 6g onion-4g garlic, 4g onion-6g garlic, and 5g onion-5g garlic, each combined with 10g of organic cotton. Results indicated that …

Customer Satisfaction On Self-Ordering Kiosk, Aubrae Frances E. Bannawi, Shanlyn D. Licpaen, Rochelle T. Dinayugan, Melgien F. Saspa, Sharla Angeline M. Ababulon, John Ethaniel C. Arnaiz, Katharine Althea J. Campos

DLSU Senior High School Research Congress

This study investigated the impact of self-ordering kiosks on customers' satisfaction in two fast-food chains in Baguio City, focusing on three aspects: user-friendliness, screen design, and technical issues. Technologies like self-ordering kiosks are becoming more popular than the previous years. Thus, restaurants are implementing them to improve restaurant operations and service. Self-ordering kiosks have a large touchscreen that allows customers to place orders, customize, and pay for their meals with minimal or no employee involvement. A descriptive research design was employed, and data were gathered from 473 customers using survey questionnaires. The data gathered is analyzed using the weighted mean …

South’In, Sa’Tin: Satin-Lined Caps To Counter Hair Thinning, Gian Dormido, Ethan Rafael F. Navarra, Alyana Isabel B. Acuña, Sofia Angela M. Ordoña, Franzin Esra R. Quintana, Generie M. Manuel

DLSU Senior High School Research Congress

Founded in May 2024 to address scalp and hair health issues common among Gen Zs, South’In was organized by five De La Salle University SHS ABM students. The group conceptualized and crafted a bull cap brand that innovates traditional headwear through satin-lined caps. With an investment of ₱25,000.00, the venture initially earned ₱6,002.50 in net profit during its initial launch. Operating as a sole proprietorship with a functional structure, South’In offers its distinct fusion of satin’s hair and scalp benefits with everyday cap comfort, making it unique both in purpose and product. The cap design comes with three interchangeable fins …

Skitchi, Julianne Danielle C. Briones, Chester A. Del Rosario, Spyrus A. Garcia, Megan Samantha L. Te, Kristine Nicole Q. Vila

DLSU Senior High School Research Congress

Skitchi is a bag business established in 2024 by five students from De La Salle University-Manila’s Accountancy, Business, and Management strand, namely Kristine Vila, Megan Te, Julianne Briones, Chester Del Rosario, and Spyrus Garcia. Operating under a sole proprietorship, the team shares a unified vision of promoting sustainability through practical, affordable, and stylish canvas bags with patches crafted from “katsa” or recycled sackcloth. In response to the growing issue of fabric waste, Skitchi sources leftover katsa from local stores in Marikina. The bags are produced in Bulacan, with patches sewn by Marikina seamstresses, demonstrating the company’s commitment to sustainable practices …

From Forest To Table: A Meta-Analysis On The Native Fruit Food Resources Of The Philippines, Gwyneth Anne G. Taban, Jonathan B. Gutierrez, Jocelyn Louise S. Gan, Patricia Elizabeth Y. Yu

DLSU Senior High School Research Congress

The Philippines boasts a rich plant biodiversity as it is located in the tropical region of the Earth. This opens up many opportunities for ethnobotanical research, which studies the many practical and cultural aspects of the plants present within a region. Native fruits are fruits grown in a specific region that have been neglected by the country’s market, as it prioritizes industrialization over cultural and native traditions and practices. As a result, research on native fruits is becoming few and far between. The researchers see this as a missed opportunity to widen and enrich both the country’s biodiversity and culture. …

Instructor Evaluation Of Alchemi: An Immersive Serious Game For Teaching Chemistry, Kyra Shanelle Martinez Velez, Joshua Logdat Tan, Jedrik James Morales Gayamat, Evan Panugot Gerarcas

DLSU Senior High School Research Congress

The Philippine science education faces challenges, including low student achievement. This study explored Alchemi, a novel immersive serious game (visual novel format), designed to enhance chemistry laboratory learning. Alchemi integrates Game-Based Learning (GBL) and Strategic Intervention Material (SIM) principles. Six chemistry instructors evaluated Alchemi's effectiveness using the MEEGA+ Game Quality Scale, assessing player experience and usability. Results showed highly positive instructor perceptions of Alchemi's engagement (high median scores for focused attention, challenge, social interaction, confidence, perceived learning), fun (median 4.25), relevance (median 4.75), and satisfaction (median 4.5). Usability aspects (learnability, operability) also scored highly (median 4.5) and aesthetics …

Age And Susceptibility: The Impact Of Age On The Cyberattack Susceptibility Of Parañaque Citizens, Clisha Rae V. Batangan, Jana Dorathy O. Loyola, Mark Kenneth D. Cabaccan, Carlos Jordan A. Datu, Joseph A. Espiritu, Roberto Romano G. Lim

DLSU Senior High School Research Congress

Throughout the years, multiple studies have been conducted to determine the impact of age on cybersecurity; however, their results were contradictory. To clarify the answer, this study examined how being a part of different age generations (Generation Z, Millennials, Generation X, and Baby Boomers) affects cybersecurity awareness, behavior, and susceptibility to cyberattacks among Parañaque citizens. The objective is to identify the susceptibility levels of each generation and to determine whether there is a significant difference between them. A total of 134 participants answered the questionnaire about their cybersecurity attitudes, knowledge, and practices. Using statistical tools such as General Weighted Mean …

Assessing The Antimicrobial Activity Of Avocado (Persea Americana) Peel Extract: Microbial Load Inhibition On Chicken Meat, Geneva Gloelle S. Tejada, Prescious Ñina S. Quinan, Chloie Marjorie D. Ganggangan, Angelica M. Nadonga

DLSU Senior High School Research Congress

Bacterial contamination of chicken meat poses significant health and economic risks globally. This study explored the potential of Avocado Peel Extract (APE) as a natural antimicrobial agent to inhibit microbial load. Raw chicken meat samples were treated with varying APE concentrations (10%, 1%, 0.1%) and a negative control. Microbial Load Count (MLC), measured in colony-forming units per gram (CFU/g) via Aerobic Plate Count (APC) after 24-hour incubation at 37°C showed the following mean values: Control (1.73E+09 CFU/g), 10% APE (1.83E+09 CFU/g), 1% APE (3.03E+09 CFU/g), 0.1% APE (2.17E+09 CFU/g). One-way Analysis of Variance (ANOVA) revealed no statistically significant difference (p=0.149). …

Cytotoxicity Of Glucosinolates Extracted From Green Cabbage (Brassica Oleracea Var. Capitata), Albert Ii G. Gonzales, John Henrick M. Monotilla, Andrea Vera D. Hellera, Julia Alexa T. Reyes, Empress Kharen M. Villena, Suzzeth U. Dizon

DLSU Senior High School Research Congress

Cancer is a large group of diseases characterized by the uncontrolled growth of abnormal cells, which can invade any organ or tissue. According to WHO (2025), cancer is the leading cause of death worldwide, accounting for nearly 10 million deaths in 2020, or approximately one in six deaths. Despite significant advancements in cancer treatments over the years, such as radiation and chemotherapy, commonly used post-surgical complementary therapies can cause adverse side effects, including nerve damage, fatigue, and chronic pain. Glucosinolate (GSLs) is a naturally occurring compound found in cruciferous vegetables, such as green cabbage. GSLs produce metabolites exhibiting anticancer properties …

Development Of “Defaketicon” An Educational Deepfake Awareness Website For Senior High School Stem-Technology Students, Killua Andrei S. Nava, Trisha Nicole E. Sese, John Carlo A. Tan, Juan Antonio D. Gulles, Princess Angel E. Miraflores, Christine Rae T. Hecto

DLSU Senior High School Research Congress

This study addresses the increasing threat of deepfake media by developing “Defaketicon” an educational website designed to raise awareness among senior high school STEM-Technology students at Adamson University. The primary objective is to evaluate the students’ perceptions towards the website in terms of performance expectancy, effort expectancy, social influence, and facilitating conditions. Using a convergent mixed-method approach, the researchers conducted a non-experimental descriptive design for the quantitative data and a narrative inquiry for the qualitative aspect. A total of 117 students participated through simple random sampling, while 8 were purposively selected for in-depth qualitative analysis. Findings from the quantitative data …

Effect Of Cooking Methods On Lead (Pb) In Pasig River-Sourced Tilapia (Oreochromis Niloticus), Rhian Joy M. Romero, Mary Rosendahl D. Monteverde, Francesca Simone A. Remorozo, Lizel P. Bonifacio

DLSU Senior High School Research Congress

Once declared biologically dead, the Pasig River now shows signs of aquatic life but remains heavily polluted with heavy metals like lead (Pb), which accumulate in fish and pose health risks. Despite this, many communities still rely on the river for food, particularly tilapia. This study addresses public health concerns by evaluating whether common cooking methods—frying, grilling, and steaming can reduce Pb levels in tilapia (Oreochromis niloticus) from the Pasig River to safe levels for consumption. A total of 107 tilapia samples were collected from Barangay Hulo, Mandaluyong City. The fish were cleaned, grouped, and cooked for 25 minutes using …

The Effect Of Tropical Temperature Conditions On Salmonella Typhimurium Growth, Elyza Dionne A. Constantino, Anastasia Charlotte D.C. Pabriga, John Vergel Pamintuan, Mark Daniel A. Velasco

DLSU Senior High School Research Congress

Salmonella contamination remains a significant health concern, particularly in environments where temperature fluctuations influence bacterial survival. While previous studies have identified temperature as a key factor in microbial growth, the specific effects of varying heat levels on Salmonella enterica serovar Typhimurium concentration require further investigation, particularly in the context of the Philippines. This study examined bacterial concentration across different temperatures by assessing S. typhimurium under controlled laboratory conditions at 37 °C, 42 °C, and 47 °C. Microbiological analysis quantified bacterial colonies (CFU/mL), revealing a decreasing trend in S. typhimurium concentration as temperature increased. The highest concentration was observed at …

Plastilapia: Potential Of Tilapia (Oreochromis Niloticus) Scales For Creating Bioplastics, Rain Andrea Q. Matilde

DLSU Senior High School Research Congress

Plastic waste is a global problem affecting General Santos City (GenSan). Though brown paper bags are alternatives, they tear easily and may cause deforestation. South Cotabato, including GenSan, produces large amounts of tilapia. Their discarded scales contain collagen that can be used to create sustainable biopolymers. This study explores the potential of tilapia scales for creating bioplastics, focusing on tensile strength and biodegradability as eco-friendly alternatives to plastics.

For this study, one kilogram of raw tilapia fish scales was used. The scales were cleaned, oven-dried at 60°C for three hours, ground, and soaked in a 0.1N sodium hydroxide solution for …

Optimization Of Iron (Iii) Removal Using Mango (Mangifera Indica) Peel Activated Carbon Biosorbent With Varying Adsorbent Dosage, Contact Time, And Temperature, Enzo Damian Berosa Magbatoc, Janssen Cahayon Mendoza, Pierre Cyrus Austria Obando, Fiona Bianca Tabares Saulon

DLSU Senior High School Research Congress

In local communities, limited access to piped water services leads to reliance on natural sources such as lakes and rivers. However, these sources are increasingly polluted by industrial effluents, agricultural runoff, and improper waste management, posing significant threats to ecosystems, public health, and community well-being. This study explores the utilization of Mango Peel Activated Carbon (MPAC), derived from ripe mango (Mangifera indica) peels, as a biosorbent for removing Iron (III) from aqueous solution, which underwent a sequence of physical and chemical activation processes. This examined key parameters such as A: adsorbent dosage (0.025–0.1 g/L), B: contact time (15–35 …

Evaluating The Mechanical Performance Of Eco-Fiberboards Made From Varying Ratios Of Water Hyacinth (Eichhornia Crassipes) And Laundry Lint Microfibers, Iommi M. Vacaro, Joaquin Vielle D. Palomo, Denise Rose D. Verzosa, Russel Bien C. Alcaraz, Kenneth V. Botor, Charls Oliver D. Duka, Udelle Y. Establecida, Justin Rayven P. Fajutagana, Sean Lawrence T. Isidro, Julian Kyle E. Mandia, Jhelo Kaye E. Miro, Dylan Justin G. Reyes, Ma. Annie Bien M. Sumague

DLSU Senior High School Research Congress

This study explored the viability of hybrid eco-fiberboards as an alternative to commercially available fiberboards. It aimed to evaluate the mechanical performance of water hyacinth (WH) and laundry lint (LL) microfibers, bound within a high-density polyethylene (HDPE) matrix to create a sustainable fiberboard. Three experimental groups with varying fiber ratios were tested for tensile and flexural strength. The results were then compared to medium-density commercial fiberboards (Positive Control), which served as a benchmark. The flexural test showed that the experimental group with the highest LL content had a maximum strength of 35.13 MPa, comparable to the control group, indicating that …

Identification Accuracy Of Cost-Effective Visible (Vis) To Near-Infrared (Nir) Sensor As7265x On Plastic Waste In The Philippines, Ma. Tricia Jasmin M. Ocho, Chloe Lizanne R. Bravo, Jennika Love R. Loyola, Kierra Jamielle V. Taroma, Leianne Nina Arabelle E. Lampayan

DLSU Senior High School Research Congress

In the Philippines, plastic waste persists as a significant issue caused by the widespread use of single-use plastics and the lack of recycling systems. The lack of proper systems made waste segregation and identification inefficient and disorganized. Past studies explain the use of VIS/NIR in plastic segregation and potential of spectral frequencies. However, there is limited investigation of the AS7265x sensor’s consistency when integrated with machine learning to further improve detection reliability; thus, the study evaluates the effectiveness of the AS7265x triad spectroscopy sensor, incorporated with machine learning algorithms. An experimental setup was created using the AS7265x sensor and Arduino …

Development Of An Mhealth Application To Be Used In Assisting Caregivers, Samantha Lianne Lim Cheong, Sofia Margarita Sison Cristobal, Precious Channe Esther Santiago Dioquino, Matteo Gonzalez Guanzon, Kyle Ian Jeffrey Lim Lim, Judith J. Azcarraga

DLSU Senior High School Research Congress

Assistive technology refers to any product, device, or system that helps individuals with their care and aids with tasks that have become difficult due to physical, cognitive, or sensory limitations. Within the scope of assistive technology are mobile health (mHealth) applications, which utilize mobile devices to provide healthcare services and information. Due to the mHealth applications' implementations on mobile devices, their adaptability is universal and accessible. This research aims to develop a mHealth application that is primarily accessible and designed specifically for caregivers by using their recommendations as the main references alongside literature reviews. It explores the features of mHealth …

Enhancement Of Phenolic, Flavonoid, And Biological Activi-Ties In Fermented Pea (Pisum Sativum) Extracts Via Frac-Tionation, Anastasia Fitria Devi, Euis Filailla, Setyani Budiari, Hani Mulyani, Nina Artanti

Karbala International Journal of Modern Science

In this study, peas were fermented for 24 h using either Rhizopus oligosporus or Aspergillus oryzae. The resulting fermented peas, along with unfermented peas, were extracted using either methanol or water. The methanol extracts showed greater improvements following fermentation compared to the water extracts, as shown by the IC₅₀ values, which progressed from >500 to ≤200 µg/mL, as determined via the 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) method. Consequently, further fractionations focused on the methanol extracts of the fermented peas. Six bands were resolved on thin-layer chromatography plates for each extract. Their positions demonstrated significant effects (p < 0.05) on bioactivity. The bottom band (i.e., Band 1) exhibited approximately 70% inhibition, as determined via the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method and 35% inhibition according to the ABTS method, while the other bands displayed lower to negligible inhibition. Band 5 displayed 85–97% cytotoxicity, while Band 1 did not show any cytotoxicity. The total phenolic content (TPC) of Band 1 and the total flavonoid content (TFC) of Band 6 increased 4.4- and 8.9-fold, respectively, compared to those of the unfractionated extracts. Furthermore, a correlation analysis revealed a strong correlation between TFC and the three observed bioactivities. The different cultures significantly (p < 0.05) affected the antioxidant activity of either the fermented pea extracts or the resulting bands, as determined via the DPPH method. These results indicated that fermentation enhanced the antioxidant activity of peas. Subsequent fractionations separated and concentrated compounds from the fermented peas, improving the bioactivities, TPC, and TFC of the resulting fractions.

Synthesis Of Gold Nanoparticles Using Hordeum Vulgare Leaf Extract And Their Antibacterial Activity, Mohamed M. Sehree, Shakir Ghazi Gergees, Pakhshan A. Hassan

Karbala International Journal of Modern Science

Plant extracts and gold nanoparticles are promising alternatives for combating antibiotic resistance in light of the increasing bacterial resistance. Leaf extract of barley was used to synthesize gold nanoparticles (AuNPs). Barley gold nanoparticles (BL-AuNPs) were produced by adjusting some reaction parameters. These BL-AuNPs were characterized through employing the UV-visible spectroscopy technique, the scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), and energy dispersive X-ray spectroscopy (EDX). BL-AuNPs were tested for antibacterial efficacy against two strains of Gram-negative bacteria, clinically isolated and considered as multidrug-resistant pathogens, Acinetobacter baumannii and Salmonella typhi. The antimicrobial efficiency of the compounds was evaluated …

The Impact Of Microplastics On Water Quality, Heavy Metals, And Health Risks In Bioflocbased Tilapia Farming Systems, Dian Rizky Afriani, Deswati Deswati, Rahmiana Zein, Putri Ramadhani

Karbala International Journal of Modern Science

Along with microplastics, pollution of heavy metals, including iron (Fe), zinc (Zn), and copper (Cu), in freshwater ecosystems poses a serious environmental threat that can adversely affect human health. This study investigates the use of biofloc technology to reduce microplastic and heavy metal contamination while improving water quality. By utilizing microbial aggregates that capture microplastic and heavy metal particles through flocculation and biosorption processes, four experimental treatments were applied, i.e.: A (without biofloc and microplastics); B (with biofloc, without microplastics); C (with biofloc and low-density polyethylene microplastics); and D (with biofloc and high-density polyethylene microplastics). The results indicate that fish …

Thriving In The Field, Jennifer Vermeer

The Voice

No abstract provided.

An Artist Takes Flight, Sarah Moss

The Voice

No abstract provided.

Dr. John Olthoff Reflects On 36 Years At Dordt, Sarah Moss

The Voice

No abstract provided.

Missions Upside Down, Jennifer Vermeer

The Voice

No abstract provided.

Using Facebook To Discuss The Science Of Reading, Erica Barnes, Jaime Puccioni, Abigail Ferris

The Language and Literacy Spectrum

Students in U.S. elementary schools continue to experience difficulty learning to read, with some attributing these difficulties to a lack of alignment with the Science of Reading (SOR). Social media plays a prominent role in disseminating information about the SOR, serving as a platform for discussion and debate that reflects many tenets of effective online professional development (OPD). The current study examines how one group of educators on social media sought out and discussed information related to the SOR. Content analysis was utilized to determine how contributors engaged with the group and what pedagogical content knowledge and SOR topics were …

Supporting The “Feelings And Language Of Thinking” And Meaning-Making In Elementary Student-Directed Inquiry Projects, Katarina N. Silvestri

The Language and Literacy Spectrum

This qualitative study investigates how three teachers attend to and pedagogically support socioemotional aspects of fifth-grade students’ learning during student self-directed inquiry projects called the Kids Inquiry Conference (KIC) using Spradley’s domain and taxonomic analyses of classroom observation and interview data. Theoretical underpinnings meet at the intersection of affective neuroscience, socioemotional competencies, and a Deweyan perspective of inquiry learning, emplacing this study within literature exploring the range of affective factors impacting elementary learners engaged in student-centered inquiry projects (e.g., identity work, motivation, self-regulation, etc.). KIC involved students self-selecting and developing research questions, designing a science activity, writing up a scientific …

Strategic Considerations For Integrating Digital Technology And Literacy Learning, Christine N. Green

The Language and Literacy Spectrum

In an era of rapidly advancing technology, integrating digital tools into literacy instruction has become a vital component of effective educational practice. This article presents findings from a case study examining how digital technology was incorporated into the literacy block of a first-grade classroom. Through sixteen hours of classroom observation and three teacher interviews, four key strategic considerations emerged for planning literacy activities that utilize educational technology. These activities enriched student learning by encouraging engagement through multiple modes of literacy. These strategic considerations include building digital connections that complement instructional goals, strategically adding digital tools, allowing students to lead, and …

Ai-Based Classification Of Pediatric Breath Sounds: Toward A Tool For Early Respiratory Screening, Lichuan Liu, Wei Li, Beth Moxley

Faculty Scholarship-Nursing

Context: Respiratory morbidity is a leading cause of children’s consultations with general practitioners. Auscultation, the act of listening to breath sounds, is a crucial diagnostic method for respiratory system diseases. Problem: Parents and caregivers often lack the necessary knowledge and experience to identify subtle differences in children’s breath sounds. Furthermore, obtaining reliable feedback from young children about their physical condition is challenging. Methods: The use of a human–artificial intelligence (AI) tool is an essential component for screening and monitoring young children’s respiratory diseases. Using clinical data to design and validate the proposed approaches, we propose novel methods for recognizing and …

On Programmatic Aspects Of The Universality, Parameter, And Recursion Theorems Of Classical Computability, Vladimir A. Kulyukin

Computer Science Faculty and Staff Publications

The Universality, Parameter, and Recursion Theorems are three foundational results of classical computability theory. We show how these theorems can be programmatically illustrated and partially validated in Lisp. Our programs can be used as supplementary materials to texts on theoretical computer science, mathematical logic, or metamathematics.

Modeling Heterogeneity In Cognitive Trajectories In The Framingham Heart Study, Yuan Fang, Jiachen Chen, Jesse Mez, Claudia L. Satizabal, Michael L. Alosco, Wei Qiao Qiu, Margaret F. Doyle, Joanne M. Murabito, Kathryn L. Lunetta

Pharmacy Faculty Scholarship

Introduction: The prevalence of cognitive impairment in the population is growing; however, there is substantial heterogeneity in the rate of decline across different cognitive domains. Harmonized factor scores measuring memory, executive function, and language domains have been created in the Framingham Heart Study (FHS). Methods: This work identified FHS participants with two or more repeated factor scores after age 60 and fitted latent class mixed models (LCMM) to cluster cognitive trajectories within each domain. Non-linear shapes of trajectories were modeled piecewise linearly, followed by stepwise selections to select cluster-specific change points. Results: We identified different latent classes of participants with …