Results 81 to 90 of about 576,684 (304)

Electroactive Liquid Crystal Elastomers as Soft Actuators

open access: yesAdvanced Functional Materials, EarlyView.
Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley   +1 more source

Integrated Regional Cardiac Hemodynamic Imaging and RNA Sequencing Reveal Corresponding Heterogeneity of Ventricular Wall Shear Stress and Endocardial Transcriptome

open access: yesJournal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2016
BackgroundUnlike arteries, in which regionally distinct hemodynamics are associated with phenotypic heterogeneity, the relationships between endocardial endothelial cell phenotype and intraventricular flow remain largely unexplored.
Margaret E. McCormick   +9 more
doaj   +1 more source

An exercise on developing an ontology-epistemology about schizophrenia and neuroanatomy [PDF]

open access: yes, 2009
This paper describes preliminary ideas on formalizing some concepts of neuroanatomy into ontological and epistemological terms. We envisage the application of this ontology on the assimilation of facts about medical knowledge about neuroimages from ...
Danilo Nunes Santos   +3 more
core   +2 more sources

An Ionic Gelation Powder for Ultrafast Hemostasis and Accelerated Wound Healing

open access: yesAdvanced Functional Materials, EarlyView.
An ultrafast ionic gelation‐activated hemostatic powder (AGCL) forms a hydrogel within ≈1 s upon contact with blood‐derived calcium ions. The AGCL powder enables rapid hemorrhage control, strong tissue adhesion, and enhanced healing. The powder's pre‐crosslinked polymer network ensures high blood uptake and stability, offering effective treatment for ...
Youngju Son   +12 more
wiley   +1 more source

Multifunctional Biomedical Devices with Closed‐Loop Systems for Precision Therapy

open access: yesAdvanced Healthcare Materials, EarlyView.
This review explores two major types of closed‐loop therapeutic systems: self‐sustained and externally triggered. It highlights recent advances in stimuli‐responsive materials, integrated bioelectronics, and data‐driven control strategies, offering insight into emerging strategies for personalized, responsive drug delivery.
Yixuan Leng, Rujie Sun
wiley   +1 more source

β Subunits Control the Effects of Human Kv4.3 Potassium Channel Phosphorylation

open access: yesFrontiers in Physiology, 2017
The transient outward K+ current, Ito, activates early in the cardiac myocyte action potential, to begin repolarization. Human Ito is generated primarily by two Kv4.3 potassium channel α subunit splice variants (Kv4.3L and Kv4.3S) that diverge only by a ...
Geoffrey W. Abbott
doaj   +1 more source

Application of NASTRAN for stress analysis of left ventricle of the heart [PDF]

open access: yes, 1975
Knowing the stress and strain distributions in the left ventricular wall of the heart is a prerequisite for the determination of the muscle elasticity and contractility in the process of assessing the functional status of the heart.
Pao, Y. C., Ritman, E. L., Wang, H. C.
core   +1 more source

Image to Fit the Clinical Picture: Point-of-care Ultrasound Assessment of Ebstein’s Anomaly in Peru [PDF]

open access: yes, 2020
Ebstein’s anomaly is a congenital heart defect that when left untreated can lead to unique physical exam and ultrasound findings. This case describes a patient who presented with dyspnea and was found to have cyanosis, clubbing, and dilation of right ...
Dreyfuss, Andrea   +2 more
core  

A Computational Journey Toward an Optimal Design for Metamaterial Epicardial Passive Sleeves

open access: yesAdvanced Healthcare Materials, EarlyView.
Passive epicardial sleeves are evaluated in 3D in‐silico heart models to reveal how sleeve geometry, stiffness, anisotropy, and metamaterial architecture influence cardiac mechanics after myocardial infarction. A continuum‐to‐auxetic design exploration shows that region‐specific mechanical engagement can reduce infarct bulging and modulate torsional ...
Vahid Naeini   +8 more
wiley   +1 more source

Single-Ventricle Physiology

open access: yesUS Cardiology Review, 2020
Single-ventricle physiology occurs in patients with hypoplastic ventricular heart defects, either on the right or left, who have undergone stepwise palliation surgeries ending with the Fontan procedure.
Lydia Taranto, Tabitha Moe
doaj   +1 more source

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