Research in Agricultural Engineering - Online first
Investigation of the drying kinetics of a residual nut mixture using mathematical models and artificialneural networksOriginal Paper
Tran Huu Duy, Nguyen Doan Kim Dang, Dang Nguyen Gia Han, Pham Tran Thanh Vy, Tran Ngoc Giau, Hong Van Hao, Nguyen Minh Thuy, Vo Quang Minh, Ngo Van Tai
Res. Agr. Eng., X:X | DOI: 10.17221/218/2025-RAE 
The objective of this study was to evaluate the potential for the sustainable reuse and the value of the residual nut mixture (RNM) by-products (cashew nut, peanut, and soybean) after extraction. To investigate the drying kinetics, the RNM was dried at various temperatures (50 to 80 °C). The Balbay and ªahin model, which had a high coefficient of determination (R2) of 99.62–99.96%, a low root mean square error of 0.007–0.021, and χ2 of 0.001–0.005, was the one that best fit the experimental data out of the eight mathematical models that were used. Artificial neural networks showed higher and faster...
Thin-layer drying kinetics and quality assessment of octopus (Octopus sp.) using mixed and open solar dryersOriginal Paper
Arina Fatharani, Yuwana Yuwana, Faulina Maissy, Firmansyah Firmansyah, Hilda Maya Sintia Dewi, Ulfah Anis, Fitri Yuwita
Res. Agr. Eng., X:X | DOI: 10.17221/199/2025-RAE
Octopus (Octopus sp.) is highly perishable marine species for which efficient drying is essential to extend shelf life in tropical climates. The anatomical heterogeneity of the octopus complicates consistent drying. This study systematically evaluated the performance of a mixed solar dryer (MSD) and open solar drying (OSD) across distinct anatomical regions (head, mantle, and tentacles), with emphasis on drying kinetics and quality attributes. Five thin-layer models were applied to characterize moisture reduction, and product quality was assessed by measuring browning, protein, fat, and ash content. The MSD achieved a 20% higher temperature...
Harvester service life impact on sugarcane field losses and product contaminationOriginal Paper
Kanya Kosum
Res. Agr. Eng., X:X | DOI: 10.17221/168/2025-RAE
Mechanical sugarcane harvesting generates substantial material losses that are associated with the equipment age. This study evaluated the relationship between the harvester service life and the operational efficiency by analysing field losses and product contamination across machines with varying operational histories (1, 14, 16, and 17 years) in Chaiyaphum Province, Thailand, using a randomised complete block design. The results indicate that the 17-year-old machines exhibited 54% higher total losses (241.93 kg·ha–1) compared to the newer equipment (156.90 kg·ha−1). The field losses were attributed...