Results 61 to 70 of about 116,540 (259)

Blue as an Underrated Alternative to Green: Photoplethysmographic Heartbeat Intervals Estimation under Two Temperature Conditions

open access: yesSensors, 2021
Since photoplethysmography (PPG) sensors are usually placed on open skin areas, temperature interference can be an issue. Currently, green light is the most widely used in the reflectance PPG for its relatively low artifact susceptibility.
Evgeniia Shchelkanova   +3 more
doaj   +1 more source

High‐Throughput 3D Matrigel‐based Droplet Microfluidics for Single‐Cell Function‐to‐Omics Analysis of Cytotoxic Immune Cells in Solid Tumor Interactions

open access: yesAdvanced Materials Technologies, EarlyView.
A 3D Matrigel‐based droplet microfluidics platform that allows physiologically relevant analysis of single immune‐tumor interactions in solid tumors. By integrating real‐time functional imaging with fluorescence‐activated droplet sorting and RNA sequencing, the system links immune cytotoxic behavior to transcriptomic profiles, providing a scalable ...
Christina Sharkey   +6 more
wiley   +1 more source

Appropriation of the Territory Management by Federal Public Power: The Formal and the Real Aspects of The Environmental Legislation in Rio de Janeiro

open access: yesRevista Brasileira Multidisciplinar - ReBraM /Brazilian Multidisciplinay Journal, 2014
Brazilian people are proud to have an environmental law considered the most complete and modern in the planet. However, pride turns to disappointment when individuals and organizations subvert the legal mechanisms to achieve their goals without worrying ...
Saulo Cezar Guimarães de Farias   +2 more
doaj   +1 more source

Accuracy of reflectance photoplethysmography on detecting cuff-induced vascular occlusions [PDF]

open access: yes, 2015
Photoplethysmography (PPG) is a noninvasive optical technique, which can also be used to derive important parameters other than arterial oxygen saturation (SpO2).
Abay, T., Kyriacou, P. A.
core   +1 more source

Passive Shape‐Adaptive Fluidic Interface for Enhanced Skin‐Sensor Coupling in Wearable Devices

open access: yesAdvanced Materials Technologies, EarlyView.
This study presents a passive fluidic interface for wearable biosensors that adapts to static and dynamic body shape changes to maintain consistent skin contact. Flexible, fluid‐filled pouches redistribute pressure from high‐load areas to regions requiring improved contact, enhancing signal quality and comfort in a compact, low‐energy design for ...
Natalia Sanchez‐Tamayo   +6 more
wiley   +1 more source

Canal Side: How Will the Community Benefit? [PDF]

open access: yes, 2010
For the last two years, PPG partners have voted to make a community benefit agreement (CBA) for the $300 million Canal Side development a plank in the PPG Community Agenda.

core   +1 more source

Substituent Effects on Cyanine Dyes Vary with Position and Chain Length

open access: yesAdvanced Optical Materials, EarlyView.
In cyanines, substituent effects vary as a function of substituent position and cyanine length. Electron‐donating‐ and ‐withdrawing groups at meso‐ and α‐positions of 4n+1/4n−1 long cyanines (n = 1, 2, 3…) cause opposing, hypsochromic and bathochromic shifts of the 1st UV–vis absorption bands.
David Dunlop   +2 more
wiley   +1 more source

Assessment of EEG-PPG Cross Frequency Coherence under Evoked Emotional Arousal

open access: yesCurrent Directions in Biomedical Engineering
Emotion influences the daily activity of human life. The complex interaction between the central nervous system (CNS) and peripheral nervous system (PNS) contributes to emotional experiences.
Banik Sourabh   +3 more
doaj   +1 more source

Novel computation of pulse transit time from multi-channel PPG signals by wavelet transform

open access: yesCurrent Directions in Biomedical Engineering, 2016
Being able to accurately monitor blood pressure in a reliable, truly non-invasive manner is a highly sought after goal within the biomedical community.
Pielmuş Alexandru-Gabriel   +6 more
doaj   +1 more source

O imaginário entre fronteiras da educação e da religião

open access: yesHorizonte, 2017
O objetivo desse artigo é discutir as contribuições da teoria do imaginário na constituição do sujeito individual e coletivo tendo como diálogo aspectos que se referem à educação e religião.
Amauri Carlos Ferreira, Vânia Noronha
doaj   +1 more source

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