![Mathematics | Free Full-Text | CNN and Bidirectional GRU-Based Heartbeat Sound Classification Architecture for Elderly People Mathematics | Free Full-Text | CNN and Bidirectional GRU-Based Heartbeat Sound Classification Architecture for Elderly People](https://pub.mdpi-res.com/mathematics/mathematics-11-01365/article_deploy/html/images/mathematics-11-01365-g001-550.jpg?1678695373)
Mathematics | Free Full-Text | CNN and Bidirectional GRU-Based Heartbeat Sound Classification Architecture for Elderly People
![Battery‐Free and Wireless Technologies for Cardiovascular Implantable Medical Devices - Zhang - 2022 - Advanced Materials Technologies - Wiley Online Library Battery‐Free and Wireless Technologies for Cardiovascular Implantable Medical Devices - Zhang - 2022 - Advanced Materials Technologies - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/af8c9dca-0f78-467b-ae0d-e02255d77c12/admt202101086-fig-0001-m.jpg)
Battery‐Free and Wireless Technologies for Cardiovascular Implantable Medical Devices - Zhang - 2022 - Advanced Materials Technologies - Wiley Online Library
![Hierarchically resistive skins as specific and multimetric on-throat wearable biosensors | Nature Nanotechnology Hierarchically resistive skins as specific and multimetric on-throat wearable biosensors | Nature Nanotechnology](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41565-023-01383-6/MediaObjects/41565_2023_1383_Fig1_HTML.png)
Hierarchically resistive skins as specific and multimetric on-throat wearable biosensors | Nature Nanotechnology
![Nanoenergy Advances | Free Full-Text | Heart Energy Harvesting and Cardiac Bioelectronics: Technologies and Perspectives Nanoenergy Advances | Free Full-Text | Heart Energy Harvesting and Cardiac Bioelectronics: Technologies and Perspectives](https://www.mdpi.com/nanoenergyadv/nanoenergyadv-02-00018/article_deploy/html/images/nanoenergyadv-02-00018-g001-550.jpg)