Results 151 to 160 of about 896,915 (412)

Dirac-graphene in slow-light [PDF]

open access: yesarXiv, 2016
We obtained exact solutions for the wave function and the Green function in the slow light pulse with the group velocity, consistent with the Fermi velocity in graphene.
arxiv  

Aortic pulse wave velocity as a marker of cardiovascular risk in hypertensive patients.

open access: yesHYPERTENSION, 1999
Large artery damage is a major contributory factor to cardiovascular morbidity and mortality of patients with hypertension. Pulse wave velocity (PWV), a classic evaluation of arterial distensibility, has never been ascertained as a cardiovascular risk ...
J. Blacher   +4 more
semanticscholar   +1 more source

Enhancing Ultrasound Power Transfer: Efficiency, Acoustics, and Future Directions

open access: yesAdvanced Materials, EarlyView.
Implantable devices significantly enhance healthcare but are limited by battery life. Ultrasound power transfer technology offers a promising solution for sustainable operation. This review addresses gaps in current research, particularly in sound field analysis and energy efficiency optimization.
Yi Zheng   +6 more
wiley   +1 more source

Materials, Structure, and Interface of Stretchable Interconnects for Wearable Bioelectronics

open access: yesAdvanced Materials, EarlyView.
Stretchable interconnects are one of the fundamental components in achieving robust wearable devices, but their importance is often overlooked. This review highlights their importance and provides insightful information on various materials, configurations, and manufacturing approaches being studied for interconnects.
Yue Li   +3 more
wiley   +1 more source

Association of arterial stiffness with components of metabolic syndrome

open access: yesАтеросклероз, 2013
Now to the independent predictors of cardiovascular events include indicators of arterial stiffness. It is shown that the arterial stiffness and, in particular, pulse wave velocity is increased in patients with the metabolic syndrome.
A. A. Kuznetsov   +7 more
doaj  

Advancements in Understanding the Physicochemical Properties of Reticular Materials: An In Situ and Operando Spectroscopic Perspective

open access: yesAdvanced Materials, EarlyView.
This review explores how in situ and operando spectroscopic techniques reveal the real‐time behavior of reticular materials, including MOFs and COFs. These methods track material formation and functionalization, structural changes, defect formation, dynamic responses to external triggers, and catalytic processes.
Bettina Baumgartner   +4 more
wiley   +1 more source

Aortic Pulse Wave Velocity in Healthy Children and Adolescents: Reference Values for the Vicorder Device and Modifying Factors.

open access: yesAmerican Journal of Hypertension, 2015
BACKGROUND Aortic pulse wave velocity (PWV), an indicator of arterial stiffness, independently predicts cardiovascular mortality risk in adults. Arterial stiffening advances with age and seems accelerated in children with certain disease conditions such ...
D. Thurn   +10 more
semanticscholar   +1 more source

Apparatus for in-situ nondestructive measurement of Young's modulus of plate structures [PDF]

open access: yes, 2005
A method and apparatus for determining stiffness of a plate-like structure including a monolithic or composite laminate plate entails disposing a device for generating an acoustical pulse against a surface of the plate and disposing a detecting device ...
DeLangis, Leo M.   +2 more
core   +1 more source

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