Results 1 to 10 of about 520 (159)

A Non-invasive Subtle Pulse Rate Extraction Method Based on Eulerian Video Magnification [PDF]

, 2019
Measuring pulse rate by means of video recording of the wrist area is a non-invasive approach. Eulerian Video Linear Magnification (EVLM) is used in this paper to magnify, and make visible, subtle pulse-induced wrist motions. A series of experiments are conducted to investigate the performance of ELVM under various conditions, such as light intensity ...
Yang Wei, Nadezhda Gracheva, John Tudor
openaire   +3 more sources

Experimental Investigation of Microbubble Evolution in the Liquivac Multiphase Flow Pump

Asia-Pacific Journal of Chemical Engineering, Volume 21, Issue 2, March/April 2026.
ABSTRACT This paper aims to experimentally investigate the mechanisms of microbubble characteristics evolution within an axial pump. The findings will aid in assessing the pump performance by identifying the range of bubble sizes and comparing them with the threshold size (< 300 μm). This study also provides evidence supporting the use of such pumps as
Hamad FA, Safa Najim, Keville Tony, Atma Prakash, Sajid Abdullah   +4 more
wiley   +1 more source

Non-Contact Blood Pressure Estimation Using Forehead and Palm Infrared Video

BioMedInformatics
This study investigates the potential of low-cost infrared cameras for non-contact monitoring of blood pressure (BP) in individuals with fragile health, particularly the elderly. Previous research has shown success in developing non-contact BP monitoring
Thomas Stogiannopoulos, Nikolaos Mitianoudis   +1 more
doaj   +1 more source

Numerical Simulations of Very Low Velocity Impacts and Ignition of an Explosive Confined by a Thin Case

Propellants, Explosives, Pyrotechnics, Volume 51, Issue 3, Page 446-455, March 2026.
A low‐speed impact (around one meter per second) of a metallic tip on an explosive confined by a thin plate is simulated. The heat due to friction between the tip and the plate and the one due to the deformation of the plate are not transfered to the ignited zone.
Lucas Bonneau, Didier Picart
wiley   +1 more source

Monitoring Infants by Automatic Video Processing

ELCVIA Electronic Letters on Computer Vision and Image Analysis, 2016
This work has, as its objective, the development of non-invasive and low-cost systems for monitoring and automatic diagnosing specific neonatal diseases by means of the analysis of suitable video signals.
Luca Cattani
doaj   +1 more source

Capillary Dynamics Analysis of Millimetric Tubes for Anti‐Slip Surfaces: A Phase‐Field Based Finite Element Approach and Experimental Validation

Advanced Theory and Simulations, Volume 9, Issue 2, February 2026.
Phase‐field method based numerical modelling of the capillary rise in millimeter‐sized tubes, aiming for anti‐slip applications. The experimental validation was performed through capillary assays in polyethylene oxide (PEO) bulk modified polydimethylsiloxane (PDMS) channels.
Shivam Sharma, Vipin Richhariya, Diana Pinho, Óscar Carvalho, Filipe S. Silva, Ashis Tripathy, Nuno Dourado, Susana O. Catarino   +7 more
wiley   +1 more source

The Critical Role of the Intermittent Two‐Phase Flow Topology on the Solute Dispersion in Partially Saturated Porous Media

Water Resources Research, Volume 62, Issue 2, February 2026.
Abstract Intermittent flow is a widely recognized phenomenon across various fields, characterized by the spatial‐temporal fluctuations of the two‐phase topology. However, its implications for solute dispersion and mixing remain insufficiently understood.
Kai Zhang, Chunwei Zhang, Zijing Li, Kai Zhao, Ming Li, Tetsuya Suekane   +5 more
wiley   +1 more source

Contactless Pulse Rate Assessment: Results and Insights for Application in Driving Simulators

Applied Sciences
Remote photoplethysmography (rPPG) offers a promising solution for non-contact driver monitoring by detecting subtle blood flow-induced facial color changes from video. However, motion artifacts in dynamic driving environments remain key challenges. This
Đorđe D. Nešković, Kristina Stojmenova Pečečnik, Jaka Sodnik, Nadica Miljković   +3 more
doaj   +1 more source

Animal‐mediated seed dispersal: A review of study methods

Applications in Plant Sciences, Volume 14, Issue 1, January-February 2026.
Abstract By dispersing seeds, animals provide ecological functions critical for the ecology, evolution, and conservation of plants. We review quantitative and empirical approaches and emerging technologies to quantify processes and patterns of animal‐mediated seed dispersal (zoochory) across its phases: from predispersal to postdispersal.
Noelle G. Beckman, Erin K. Kuprewicz, Binod Borah, James M. Bullock, Amanda S. Gallinat, Juan P. González‐Varo, Abir Jain, Jun Ying Lim, Carina I. Motta, Omer Nevo, Haldre S. Rogers   +10 more
wiley   +1 more source

Continuous sPatial‐temporal deformable image registration and 4D frame interpolation

Medical Physics, Volume 53, Issue 1, January 2026.
Abstract Background Deformable image registration (DIR) is a crucial tool in radiotherapy for analyzing anatomical changes and motion patterns. Current DIR implementations rely on discrete volumetric motion representation, which often leads to compromised accuracy and uncertainty when handling significant anatomical changes and sliding boundaries. This
Xia Li, Runzhao Yang, Muheng Li, Xiangtai Li, Antony J. Lomax, Joachim M. Buhmann, Ye Zhang   +6 more
wiley   +1 more source