Results 141 to 150 of about 314,689 (283)

Enhancing Ultrasound Power Transfer: Efficiency, Acoustics, and Future Directions

Advanced Materials, EarlyView.
Implantable devices significantly enhance healthcare but are limited by battery life. Ultrasound power transfer technology offers a promising solution for sustainable operation. This review addresses gaps in current research, particularly in sound field analysis and energy efficiency optimization.
Yi Zheng, Zhuomin Zhang, Yanhu Zhang, Qiqi Pan, Xiaodong Yan, Xuemu Li, Zhengbao Yang   +6 more
wiley   +1 more source

Estimation du rythme cardiaque fœtal par l'estimateur YIN [PDF]

, 2011
International audienceTechniques dedicated to the fetal heart rate detection identify the patterns that repeat themselves over the time. The heart rate estimation is algorithmically similar to the estimation of the fundamental frequency (pitch) of voice ...
Girault, Jean-Marc, Ménigot, Sébastien, Voicu, Iulian   +2 more
core   +1 more source

Cardiac Organoid Model Inspired Micro‐Robot Smart Patch to Treat Myocardial Infarction

Advanced Materials, EarlyView.
The heart organoid model exhibits the acidic microenvironment characteristic of myocardial infarction, which emerges as a pivotal force propelling the movement of micro‐robots. These micro‐robots, administered through microneedles, can penetrate deep into the tissue, effectively delivering therapeutic payloads to facilitate heart repair.
Fangfang Wang, Zilu Xu, Feiyang Zheng, Dongcheng Yang, Kaige Xu, Ming Ke, Xiao Zhou, Xiaohan Zhang, Ju Tan, Yong Liu, Yansha Hao, Malcolm Xing, Chuhong Zhu   +12 more
wiley   +1 more source

Side effects from epidural analgesia in laboring women and risk of cesarean deliveryAJOG Global Reports at a Glance

AJOG Global Reports
BACKGROUND: Epidural analgesia may cause maternal hypotension and changes in the fetal heart rate. The implications of such side effects on the course of labor and delivery are incompletely understood.
Alessandro Ghidini, MD, Kelly Vanasche, BSN, Alyssa Cacace, BS, Marietta Cacace, BSN, Simona Fumagalli, RM, Anna Locatelli, MD   +5 more
doaj  

From Mechanoelectric Conversion to Tissue Regeneration: Translational Progress in Piezoelectric Materials

Advanced Materials, EarlyView.
This review highlights recent progress in piezoelectric materials for regenerative medicine, emphasizing their ability to convert mechanical stimuli into bioelectric signals that promote tissue repair. Key discussions cover the intrinsic piezoelectric properties of biological tissues, co‐stimulation cellular mechanisms for tissue regeneration, and ...
Xinyu Wang, Sílvio Terra Stefanello, Victor Shahin, Yun Qian   +3 more
wiley   +1 more source

A Highly Adaptable Hydrogen Bond Re‐Orientation (HyBRO) Strategy for Multiscale Vasculature Fabrication

Advanced Materials, EarlyView.
A novel hydrogen bond re‐orientation (HyBRO) strategy enables three‐dimensional (3D) printing of vascular microchannel networks with high accuracy. By switching sacrificial material interactions with nonsolvents, HyBRO prevents swelling and deformation, enabling accurate hierarchical channels spanning a tenfold size range.
Zhencheng Liao, Yu Liu, Chonghao Chen, Iek Man Lei, Lei Dong, Chunming Wang   +5 more
wiley   +1 more source

Upconversion Nanoparticle‐Covalent Organic Framework Core–shell Particles as Therapeutic Microrobots Trackable With Optoacoustic Imaging

Advanced Materials, EarlyView.
Upconversion nanoparticle‐covalent organic framework core–shell particles provide enhanced contrast for optoacoustic imaging by leveraging the optical absorption of upconversion luminescence within the covalent organic framework matrix. Beyond their role as contrast agents, these particles enable customizable therapeutic agent loading and release, as ...
Dong Wook Kim, Paul Wrede, Andrés Rodríguez‐Camargo, Yi Chen, Nihal Olcay Dogan, Chaim Glück, Bettina V. Lotsch, Daniel Razansky, Metin Sitti   +8 more
wiley   +1 more source

Structured Light Projection Using Image Guide Fibers for In Situ Photo‐biofabrication

Advanced Materials, EarlyView.
Light‐based biofabrication is typically performed with single wavelength light sources and within benchtop devices. This work demonstrates FaSt‐Light (Fiber‐assisted Structured Light) as a new approach to achieve multiwavelength image projection using flexible image guide fibers, which enables a variety of applications for in situ biofabrication ...
Parth Chansoria, Michael Winkelbauer, Shipin Zhang, Jakub Janiak, Hao Liu, Dimitar Boev, Andrea Morandi, Rachel Grange, Marcy Zenobi‐Wong   +8 more
wiley   +1 more source

Engineering Bacterial Secretion Systems for Enhanced Tumor Imaging and Surgical Guidance

Advanced Materials, EarlyView.
This study presents a novel contrast agent platform, Streptavidin Associated Salmonella (SAS), for fluorescence image guided surgery. SAS selectively colonizes tumors and secretes streptavidin, enabling precise delineation of invasive tumor margins with prolonged signal retention.
Dohee Lee, Heung Jin Jeon, Dohyub Jang, Deukhee Lee, Solbi Kim, Minju Han, Sharon Jiyoon Jung, Jung‐Hyun Lee, Jia Choi, Dong Ha Kim, Dong June Ahn, Keri Kim, Sehoon Kim, Hyo‐Jin Lee, SeungBeum Suh   +14 more
wiley   +1 more source

Electrochemistry‐Based Assay for Monitoring of Adherent Macrophages and Foam Cells on Ab‐CD36 Modified Electrospun Nanofibers

Advanced Materials Interfaces, EarlyView.
Here, for the first time, macrophages and foam cells' adhesions to the developed polystyrene/graphene oxide‐3‐aminopropyltriethoxysilane/Anti‐CD36 (PS@GAPTES@Ab‐CD36) electrospun nanofiber‐based biofunctional surface using electrochemical measurements and fluorescence imaging are examined.
Simge Er Zeybekler, Ahmet Çifçi, Diğdem Yöyen Ermiş, Gözde Arslan, Haluk Barbaros Oral, Dilek Odaci   +5 more
wiley   +1 more source