![Frontiers | Noise Levels of Multi-Rotor Unmanned Aerial Vehicles with Implications for Potential Underwater Impacts on Marine Mammals Frontiers | Noise Levels of Multi-Rotor Unmanned Aerial Vehicles with Implications for Potential Underwater Impacts on Marine Mammals](https://www.frontiersin.org/files/MyHome%20Article%20Library/223318/223318_Thumb_400.jpg)
Frontiers | Noise Levels of Multi-Rotor Unmanned Aerial Vehicles with Implications for Potential Underwater Impacts on Marine Mammals
![Drones | Free Full-Text | Implementation and Critical Factors of Unmanned Aerial Vehicle (UAV) in Warehouse Management: A Systematic Literature Review Drones | Free Full-Text | Implementation and Critical Factors of Unmanned Aerial Vehicle (UAV) in Warehouse Management: A Systematic Literature Review](https://www.mdpi.com/drones/drones-07-00080/article_deploy/html/images/drones-07-00080-g001.png)
Drones | Free Full-Text | Implementation and Critical Factors of Unmanned Aerial Vehicle (UAV) in Warehouse Management: A Systematic Literature Review
![Electronics | Free Full-Text | A Sensor-Based Drone for Pollutants Detection in Eco-Friendly Cities: Hardware Design and Data Analysis Application Electronics | Free Full-Text | A Sensor-Based Drone for Pollutants Detection in Eco-Friendly Cities: Hardware Design and Data Analysis Application](https://pub.mdpi-res.com/electronics/electronics-11-00052/article_deploy/html/images/electronics-11-00052-g001.png?1640593224)