MAPNA Group (Iran)

Construction of a Solar Tracker Using Optical and Ultrasonic Sensor by Internet of Things for Control and Monitoring on the Horizontal Axis

This preprint presents the design, construction, and experimental evaluation of a horizontal-axis solar tracking system that combines optical sensing, ultrasonic position feedback, linear actuation, and Internet of Things (IoT)-based control and monitoring. The optical tracking s...

Construction of a Solar Tracker Using Optical and Ultrasonic Sensor by Internet of Things for Control and Monitoring on the Horizontal Axis

This preprint presents the design, construction, and experimental evaluation of a horizontal-axis solar tracking system that combines optical sensing, ultrasonic position feedback, linear actuation, and Internet of Things (IoT)-based control and monitoring. The optical tracking s...

Purple sulfur bacteria convert aquaculture waste into antioxidant-rich single-cell protein through biofloc technology

Global aquaculture confronts twin sustainability imperatives: dwindling fishmeal supplies due to overfishing and the annual generation of over 20 million tonnes of processing by-products. Addressing these interconnected challenges, we developed an integrated bio-valorization stra...