jchengroa

Research

A multidisciplinary exploration of technology and life sciences with a current focus on sustainable ecological solutions.

Collecting Solid Waste from Polluted Waters using 'Waste Shark Mega Box' Robot

2022 • De La Salle Araneta University, Integrated School

Collecting Solid Waste from Polluted Waters using 'Waste Shark Mega Box' Robot

[SCIENCE INVESTIGATORY PROJECT]•[DIY ROBOTICS]•[RC BOAT]

A high school Science Investigatory Project (SIP) exploring a low-cost, DIY radio-controlled waste-collecting robot built with a storage box and RC hobby parts to collect floating plastic trash and PPEs from calm waters.

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Design, Implementation, and Performance Evaluation of Discrete and Three-Terminal Integrated Voltage Regulation Circuits

April 16, 2026 • De La Salle University - Velasco Hall

Design, Implementation, and Performance Evaluation of Discrete and Three-Terminal Integrated Voltage Regulation Circuits

[COMPUTER ENGINEERING]•[LINEAR REGULATORS]•[THERMAL MANAGEMENT]

An electronics engineering investigation designing, simulating, constructing, and testing a discrete series-pass (2N3055/TIP32C) regulator and an integrated (LM317T) 9V linear regulator.

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Effects of Cabbage (Brassica oleracea) Extract in Prolonging the Shelf-Life of Radish (Raphanus sativus)

2024 • De La Salle Araneta University, Life Sciences Building

Effects of Cabbage (Brassica oleracea) Extract in Prolonging the Shelf-Life of Radish (Raphanus sativus)

[AGRITECH]•[POSTHARVEST TECHNOLOGY]•[FOOD SCIENCE]

An experimental investigation testing microwave-assisted flavonoid extraction from repurposed cabbage to extend radish shelf-life across weight loss, decay, and firmness parameters.

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Evaluation of Cytotoxicity and Flavonoid Presence of Cabbage Extract (Brassica oleracea)

2024 • De La Salle Araneta University, Life Sciences Building

Evaluation of Cytotoxicity and Flavonoid Presence of Cabbage Extract (Brassica oleracea)

[BIOCHEMISTRY]•[PHYTOCHEMICAL SCREENING]•[CYTOTOXICITY ASSAY]

Qualitative phytochemical screening and Allium cepa root growth assay evaluating the bioactivity, safety, and non-cytotoxic properties of microwave-extracted cabbage flavonoids.

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