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Shallots are a food commodity that often experiences price fluctuations and is one of the contributors to inflation in the city of Palembang. This study compares the ARIMA, SARIMA, and LSTM methods for predicting shallot prices using daily data from January 2020 to October 2025. The research stages include data collection, preprocessing, visualization and decomposition, division of training and…
Urea (CH₄N₂O) is widely used in agriculture, medicine, and industry; however, excessive accumulation can negatively impact the environment and human health. Therefore, a sensor that is fast, accurate, and stable is required. This study evaluates CuO-TiO₂/C electrodes based on Vulcan carbon, Binchotan carbon, and polyaniline (PANI) modification as urea sensors in 0.1 M NaOH. The electrodes…