![Remote Sensing | Free Full-Text | Quad-FPN: A Novel Quad Feature Pyramid Network for SAR Ship Detection Remote Sensing | Free Full-Text | Quad-FPN: A Novel Quad Feature Pyramid Network for SAR Ship Detection](https://pub.mdpi-res.com/remotesensing/remotesensing-13-02771/article_deploy/html/images/remotesensing-13-02771-ag.png?1630069390)
Remote Sensing | Free Full-Text | Quad-FPN: A Novel Quad Feature Pyramid Network for SAR Ship Detection
![Photonics | Free Full-Text | Proposal for a Quad-Elliptical Photonic Crystal Fiber for Terahertz Wave Guidance and Sensing Chemical Warfare Liquids Photonics | Free Full-Text | Proposal for a Quad-Elliptical Photonic Crystal Fiber for Terahertz Wave Guidance and Sensing Chemical Warfare Liquids](https://www.mdpi.com/photonics/photonics-06-00078/article_deploy/html/images/photonics-06-00078-g001.png)
Photonics | Free Full-Text | Proposal for a Quad-Elliptical Photonic Crystal Fiber for Terahertz Wave Guidance and Sensing Chemical Warfare Liquids
![OSI QUAD Advanced Formula 10 fl. oz. White #001 Exterior Window, Door, and Siding Sealant VOC 1642487 - The Home Depot OSI QUAD Advanced Formula 10 fl. oz. White #001 Exterior Window, Door, and Siding Sealant VOC 1642487 - The Home Depot](https://images.thdstatic.com/productImages/e67bd98d-2fc4-4289-8ae0-1b47eba09788/svn/white-001-osi-sealants-1642487-64_1000.jpg)