Results 31 to 40 of about 1,842,183 (305)

Non-Contact Friction for Ion-Surface Interactions

, 2015
Non-contact friction forces are exerted on physical systems through dissipative processes, when the two systems are not in physical contact with each other, or, in quantum mechanical terms, when the overlap of their wave functions is negligible.
Jentschura, U. D., Lach, G.
core   +1 more source

Robust Pulse Rate Measurements from Facial Videos in Diverse Environments

Sensors, 2022
Pulse wave and pulse rate are important indicators of cardiovascular health. Technologies that can check the pulse by contacting the skin with optical sensors built into smart devices have been developed.
Jinsoo Park, Kwangseok Hong
doaj   +1 more source

Magnetic non-contact friction from domain wall dynamics actuated by oscillatory mechanical motion [PDF]

, 2019
Magnetic friction is a form of non-contact friction arising from the dissipation of energy in a magnet due to spin reorientation in a magnetic field.
Laurson, Lasse, Rissanen, Ilari
core   +2 more sources

Implementation of Thermal Camera for Non-Contact Physiological Measurement: A Systematic Review

Sensors, 2021
Non-contact physiological measurements based on image sensors have developed rapidly in recent years. Among them, thermal cameras have the advantage of measuring temperature in the environment without light and have potential to develop physiological ...
Martin Clinton Tosima Manullang, Yuan-Hsiang Lin, Sheng-Jie Lai, Nai-Kuan Chou   +3 more
doaj   +1 more source

Magnetic phase transitions in Gd64Sc36 studied using non-contact ultrasonics [PDF]

, 2012
The speed and attenuation of ultrasound propagation can be used to determine material properties and identify phase transitions. Standard ultrasonic contact techniques are not always convenient due to the necessity of using couplant; however, recently ...
Andrianov A B, Buchel'nikov V D, Buchel'nikov V D, Dobbs E R, Edwards R S, Frost H M, Kinsler L E, Lim C M, Lüthi B, Melville R J, Oksana Trushkevych, Parkinson G J, Rachel S Edwards, Robert Perry, Salgueiro da Silva M, Salgueiro da Silva M, Thompson R B, Yichao Fan   +17 more
core   +2 more sources

Evaluation of Remote Photoplethysmography Measurement Conditions toward Telemedicine Applications

Sensors, 2021
Camera-based remote photoplethysmography (rPPG) is a low-cost and casual non-contact heart rate measurement method suitable for telemedicine. Several factors affect the accuracy of measuring the heart rate and heart rate variability (HRV) using rPPG ...
Akito Tohma, Maho Nishikawa, Takuya Hashimoto, Yoichi Yamazaki, Guanghao Sun   +4 more
doaj   +1 more source

Smart vest for respiratory rate monitoring of COPD patients based on non-contact capacitive sensing [PDF]

, 2018
In this paper, a first approach to the design of a portable device for non-contact monitoring of respiratory rate by capacitive sensing is presented.
Barbarov-Rostán, Gerardo, Cejudo Ramos, Pilar, Márquez, Martín, Eduardo, Naranjo Hernández, David, Ortega Ruiz, Francisco, Reina Tosina, Luis Javier, Roa Romero, Laura María, Talaminos Barroso, Alejandro   +7 more
core   +1 more source

High-Precision Tunneling Magnetoresistance (TMR) Current Sensor for Weak Current Measurement in Smart Grid Applications

Micromachines
To meet the demand for high-precision, high-resolution measurement of weak currents in smart grids, this article presents the design of a current sensor based on the tunneling magnetoresistance (TMR) effect.
Yong Xu, Zhenhu Jin, Jiamin Chen
doaj   +1 more source

Sirolimus for Extracranial Arteriovenous Malformations: A Scoping Review of the Evidence in Syndromic and Non‐Syndromic Cases

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Arteriovenous malformations (AVMs) are rare, high‐flow, vascular anomalies that can occur either sporadically or as part of a genetic syndrome. AVMs can progress with serious morbidity and even mortality if left unchecked. Sirolimus is an mTOR inhibitor that is effective in low‐flow vascular malformations; however, its role in AVMs is unclear.
Will Swansson, Ingrid Winship, Gary Hammerschlag, Laura Scardamaglia   +3 more
wiley   +1 more source

Non-Contact Measurement of Infant Respiratory Rate Based on Video using Pose Estimation and Optical Flow Analysis

Jurnal Elkomika
Non-contact respiratory rate measurement in infants presents an innovative alternative to traditional contact-based methods, which often lead to discomfort.
NURUL KHAIRA SABILA, MOHAMMAD IKHSAN
doaj   +1 more source