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Duke Oeba

Publications (4)

Forensic Authentication of Paracetamol Using FTIR and UV–Vis Spectroscopy Coupled with Similarity Metrics

Kipronoh Theophilus Korir, Jared O. Gwaro & Duke Oeba · Asian Journal of Physical and Chemical Sciences · 2025

The global circulation of counterfeit and substandard medicines poses a serious threat to public health and challenges forensic science in generating reliable evidence. Paracetamol, a widely used analgesic and antipyretic, is among the most frequently falsified drugs in low- and...

Open access Research Article 10.9734/ajopacs/2025/v13i4263

Characterization of Plant Based Organic Dye Mixtures for Dye Sensitized Solar Cells (DSSCS) Application

Muthini Samuel Nzioka, Justus Simiyu & Duke Oeba · Asian Journal of Research and Reviews in Physics · 2025

Aims/ Objectives: Main objective. To extract and characterize organic dye mixtures from plant- based chlorophyll and anthocyanin pigments for DSSCs applications. Specific objectives: To extract (solvent extraction process) and mix chlorophyll and anthocyanin dye pigments at varyi...

Open access Research Article 10.9734/ajr2p/2025/v9i3198

Design and Simulation of a Captive Grid-Tied Solar PV System for Daytime Peak Load Management: A Case Study of Maasai Mara University

Dorothy Atieno Lwambe, Justus Simiyu, Duke Oeba & Otieno Fredrick · Asian Journal of Research and Reviews in Physics · 2025

Aims: To develop an optimal electricity consumption profile for Maasai Mara University based on 90 days actual consumption data. To design and simulate captive grid interactive solar photovoltaic system for Maasai Mara University based on the first objective. Study Design: The sy...

Open access Research Article 10.9734/ajr2p/2025/v9i3196

Predicting Hass Avocado Maturity with NIR Spectroscopy for Non-invasive Dry Matter Estimation in Hass Avocados

Mercy Amondi, Jared Ombiro, Zephania Birech & Duke Oeba · Asian Journal of Research and Reviews in Physics · 2024

Aims: To develop a rapid, non-invasive method for predicting Hass avocado maturity using near- infrared diffuse reflectance spectroscopy (NIR-DRS) combined with machine learning algorithms, and to identify the optimal NIR wavelength range for accurate dry matter content predictio...

Open access Research Article 10.9734/ajr2p/2024/v8i4175