Blog
News and technical articles.
Physiological intelligence, critical operations and what we are building at Dersalis.
News · October 29, 2026
Projeto Predict: Vale presents fatigue prevention results with Dersalis at Vale Summit 2026
At Vale Summit 2026, Raquel Amorim and Yuzo Igarashi showed how Projeto Predict anticipated fatigue by up to 2h40 and halved the time exposed to risk at the Port of Tubarão and Serra Leste.
Technical articles · October 29, 2026
Detecting fatigue without interrupting work: the role of parasympathetic activity
A model based on heart rate variability, validated over five industrial logistics shifts at Ocyan in Macaé, was right in 88% of its fatigue alerts without requiring any answer from the worker.
Technical articles · October 29, 2026
What workers say is not what the body shows: the bias of self-reported sleepiness in operations
Over three months on the ODN-1 drilling rig, 83% of self-assessments showed little or no sleepiness, yet 57% of attention tests showed low performance. What that gap teaches us about fatigue management.
Insights · June 04, 2025
Fatigue on the night shift: what health data reveal
A case study of a 12-hour night shift: how heart rate variability reveals the windows of highest fatigue risk.