Results 91 to 100 of about 491,414 (308)

Adenylyl cyclase isoforms 5 and 6 in the cardiovascular system: complex regulation and divergent roles

Frontiers in Pharmacology
Adenylyl cyclases (ACs) are crucial effector enzymes that transduce divergent signals from upstream receptor pathways and are responsible for catalyzing the conversion of ATP to cAMP.
Saeid Maghsoudi, Saeid Maghsoudi, Rabia Shuaib, Ben Van Bastelaere, Shyamala Dakshinamurti, Shyamala Dakshinamurti, Shyamala Dakshinamurti   +6 more
doaj   +1 more source

Dead in the Night: Sleep-Wake and Time-Of-Day Influences on Sudden Unexpected Death in Epilepsy

Frontiers in Neurology, 2018
Sudden unexpected death in epilepsy (SUDEP) is the leading cause of epilepsy-related death in patients with refractory epilepsy. Convergent lines of evidence suggest that SUDEP occurs due to seizure induced perturbation of respiratory, cardiac, and ...
Benton S. Purnell, Benton S. Purnell, Benton S. Purnell, Roland D. Thijs, Roland D. Thijs, Roland D. Thijs, Gordon F. Buchanan, Gordon F. Buchanan, Gordon F. Buchanan   +8 more
doaj   +1 more source

Periodic breathing at high altitude.

, 2002
Periodic breathing is often associated with heart disease or stroke, and commonly Cheyne-Stokes breathing has a period of about a minute. Periodic breathing also commonly occurs in healthy subjects at high altitude, and here the periods may be much ...
Fowler, AC, Kalamangalam, GP, Kalamangalam, G. P., Fowler, A. C.   +3 more
core  

Proposal for certification tests and standards for closed-circuit breathing apparatus [PDF]

Significant portions of the present Federal regulations for certification of closed-circuit breathing apparatus (42 CFR 84) are not quantitative. The human-subject testing portion of the regulations specifies activities rather than metabolic work rates ...

core   +1 more source

Web-based sensor streaming wearable for respiratory monitoring applications. [PDF]

, 2011
This paper presents a system for remote monitoring of respiration of individuals that can detect respiration rate, mode of breathing and identify coughing events. It comprises a series of polymer fabric-sensors incorporated into a sports vest, a wearable
Dermot Diamond, Rovira Carlos, Coyle, Shirley, McCoy Aaron, Ward, Tomás E., McCoy, Aaron, Shirley Coyle, Ward Tomas, Ward, Tomas, Kieran Daly, Diamond, Dermot, Daly, Kieran, Corcoran, Brian, Stroiescu, Florin, Carlos, Rovira, Brian Corcoran, Rovira-Borras, Carlos, Florin Stroiescu   +17 more
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Engagement and outcomes of virtual antenatal asthma care: a randomised controlled tele-trial

ERJ Open Research
Background Access, availability and engagement of optimal asthma management are limited in maternity care. This study evaluated the engagement and outcomes of a virtual model of antenatal asthma care compared to a face-to-face model.
Dennis Thomas, Vanessa M. McDonald, Eleanor Majellano, Kelly Steel, Michelle Stubbs, Paola D. Urroz Guerrero, Alison Beverley, Jennifer Rutherford, Peter G. Gibson   +8 more
doaj   +1 more source

Bamboo Medical Application: A State‐of‐the‐Art Review

Advanced Materials Technologies, EarlyView.
This review presents a structured classification of bamboo's current use in healthcare. It organizes applications into medical textiles and medical devices, with further divisions based on function and level of invasiveness. It also examines material utilization based on bamboo's structural role, highlighting how it supports both protective and ...
Haymanot Beza Lamesgin, Koosje van der Stoel, Vera Popovich, Paul Breedveld   +3 more
wiley   +1 more source

Upcycling Compact Discs Into Ultra‐Stable, Flexible, and Stretchable Nanoporous Gold Electrodes for Enhanced Biosensing Performance

Advanced Materials Technologies, EarlyView.
This article highlights the development of robust and high‐performance flexible and stretchable biosensors that maintain long‐term functionality and optimal electrical conductivity under mechanical deformation, utilizing sustainable and cost‐effective manufacturing principles.
Mousa H. Aldosari, Ahyeon Koh
wiley   +1 more source

Testing and Simulation of Multilayer Polyvinylidene Fluoride‐Based Piezoelectric Energy Harvester Devices

Advanced Materials Technologies, EarlyView.
The study considers the use of polymer/dielectric‐based multilayers piezoelectric Energy Harvesters (EH) to produce an output voltage and current, by exploiting the mechanical energy provided by human organs movements. In particular, the heart motion is considered from the kinematic viewpoint, and a multiphysics theoretical model is developed to assess
Hamdi Ezzin, Silvia Monchetti, Paolo Emilio Puddu, Luciano Teresi, Antonio DeSimone, Roberto Brighenti   +5 more
wiley   +1 more source