Results 41 to 50 of about 20,121 (213)

Restoration of microhemodynamics on the human body surface using the fractional derivative of temperature oscillations [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Физика
Background and Objectives: The possibility of restoring microhemodynamics on the human body surface was investigated through the analysis of skin temperature oscillation signals using integer and fractional order derivatives.
Sagaidachnyi, Andrey Aleksandrovich   +7 more
doaj   +1 more source

Possibilities of Pulse Wave Contour Analysis in Diagnostics of Early Vascular Aging

open access: yesРациональная фармакотерапия в кардиологии, 2020
Aim. To study the possibilities of photoplethysmography (PPG) in evaluation of arterial stiffness, arterial age and early vascular aging (EVA) in healthy individuals and patients with cardiovascular risk factors.Material and methods.
A. M. Tuktarov   +3 more
doaj   +1 more source

Design of Smart Steering Wheel for Unobtrusive Health and Drowsiness Monitoring

open access: yesSensors, 2021
This article describes the design of a smart steering wheel intended for use in unobtrusive health and drowsiness monitoring. The aging population, cardiovascular disease, personalized medicine, and driver fatigue were significant motivations for ...
Branko Babusiak   +4 more
doaj   +1 more source

Self‐Sustaining Sensing Systems: Integration Strategies and Signal–Power Matching in Energy‐Harvesting Electronics

open access: yesAdvanced Science, EarlyView.
Energy‐harvesting‐integrated sensors couple ambient energy conversion with sensing, processing, and wireless communication. This review organizes recent progress through integration architectures and operating principles, revisiting co‐packaged, monolithic, and co‐functional designs together with always‐on, event‐driven, and multi‐modal sensing modes ...
Taehyun Park   +5 more
wiley   +1 more source

Arterial Digital Pulse Photoplethysmography in Patients with Suspected Thoracic Outlet Syndrome: A Study of the “Ca+Pra” Maneuver

open access: yesDiagnostics, 2021
The level of pulse amplitude (PA) change in arterial digital pulse plethysmography (A-PPG) that should be used to diagnose thoracic outlet syndrome (TOS) is debated.
Jeanne Hersant   +7 more
doaj   +1 more source

Advancements in remote photoplethysmography / [PDF]

open access: yes
Advancements in camera technology over the past two decades have made image-based monitoring increasingly accessible for healthcare applications. Imaging photoplethysmography (iPPG) and remote photoplethysmography (rPPG) are non-invasive methods for ...
Saikevičius, Linas,   +7 more
core   +1 more source

Bio‐Inspired Internal Stress Engineering for Microscale Surface Cracking in Sensitive Strain Sensors

open access: yesAdvanced Science, EarlyView.
This study presents a bio‐inspired internal stress engineering strategy to fabricate highly sensitive crack‐based strain sensors. By harnessing the internal expansion energy of microspheres and the thickness‐dependent brittle‐to‐ductile transition of ultrathin gold films, tunable microscale cracks are generated.
Jae Yeong Jang, Hanchul Cho, Young Jung
wiley   +1 more source

Restoration of Remote PPG Signal through Correspondence with Contact Sensor Signal

open access: yesSensors, 2021
Photoplethysmography (PPG) is an optical measurement technique that detects changes in blood volume in the microvascular layer caused by the pressure generated by the heartbeat.
So-Eui Kim   +4 more
doaj   +1 more source

Perovskite Photodetectors at the Intelligence Frontier: From Tunable Materials to Adaptive Optoelectronic Systems

open access: yesCarbon Energy, EarlyView.
This comprehensive review presents a progressive roadmap for perovskite vision detectors. Centered on perovskite‐based artificial perception, the graphic illustrates a systematic evolution: starting with fundamental material engineering and device architectures, advancing toward complex functional strategies such as flexible neuromorphic imaging ...
Chenglong Li   +14 more
wiley   +1 more source

Noise‐Blocking Interfacial Lamination of Small‐Molecule Acceptors for Enhanced Signal Clarity in Organic Photodetectors

open access: yesCarbon Energy, EarlyView.
The structural design strategy employing the Y6‐BO interfacial lamination suppresses dark current by limiting solvent‐induced interfacial damage through the formation of uniformly arranged interfaces while optimizing charge transport to achieve superior detectivity.
Jihyun Lim   +4 more
wiley   +1 more source

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