Results 121 to 130 of about 17,589,042 (280)

Sub‐nm2 Ferroelectric Domains via Charged 180° Walls in ZrO2

Advanced Materials, EarlyView.
Ferroelectric ZrO2${\rm ZrO}_2$ thin films host closely spaced charged 180∘$^{\circ }$ domain walls that vertically compress polar domains beyond their lateral half‐unit‐cell limit. These head‐to‐head and tail‐to‐tail walls show distinct bulk‐like structures, natural oxygen‐mediated stabilization, and highly asymmetric mobility, highlighting new ...
Nashrah Afroze, Hamoon Fahrvandi, Guodong Ren, Pawan Kumar, Christopher Nelson, Sarah Lombardo, Mengkun Tian, Ping‐Che Lee, Jiayi Chen, Manifa Noor, Kisung Chae, Sanghyun Kang, Prasanna Venkat Ravindran, Matthew Bergschneider, Gwan Yeong Jung, Pravan Omprakash, Gardy K. Ligonde, Nujhat Tasneem, Dina Triyoso, Steven Consiglio, Kanda Tapily, Robert Clark, Gert Leusink, Jayakanth Ravichandran, Shimeng Yu, Andrew R Lupini, Andrew C Kummel, Kyeongjae Cho, Duk‐Hyun Choe, Nazanin Bassiri‐Gharb, Josh Kacher, Rohan Mishra, Jun Hee Lee, Asif Khan   +33 more
wiley   +1 more source

Nonplanar Bouligand Architectures for Enhanced Mechanical Performance in Cementitious Composites

Advanced Materials, EarlyView.
Inspired by the impact region of the Mantis shrimp dactyl club, nonplanar additive manufacturing translates sinusoidal Bouligand architectures into cementitious composites. Printing‐induced anisotropy and architected interfaces promote distributed damage and arrest crack propagation, enhancing strength and energy absorption.
Yu Wang, Loukham Shyamsunder, Phani Saketh Dasika, Andrew Nguyen, David Kisailus, Jan Olek, Jeffrey P. Youngblood, Pablo D. Zavattieri   +7 more
wiley   +1 more source

Provocation of neurocardiogenic syncope by clomipramine administration during the head-up tilt test in vasovagal syndrome

, 2000
OBJECTIVES We sought to test the hypothesis that activation of the serotonergic system in patients with vasovagal syndrome during the head-up tilt test provokes syncope.
Zarvalis, E, Theodorakis, GN, Livanis, EG, Kremastinos, DT, Flevari, P, Markianos, M   +5 more
core   +1 more source

Comparisons of heart rate variability responses to head-up tilt with and without abdominal and lower-extremity compression in healthy young individuals: a randomized crossover study

Frontiers in Physiology
Introduction: Abdominal and lower-extremity compression techniques can help reduce orthostatic heart rate increases. However, the effects of body compression on the cardiac autonomic systems, which control heart rate, remain unclear.
Kazuaki Oyake, Miyuki Katai, Anzu Yoneyama, Hazuki Ikegawa, Shigeru Kani, Kimito Momose   +5 more
doaj   +1 more source

Head-up tilt testing. The balance of evidence. [PDF]

Heart, 1994
A D, Hargreaves, O, el Hag, N A, Boon
openaire   +2 more sources

Advances in Bio‐Integrated Edge Computing Systems for Smart and Connected Health

Advanced Materials, EarlyView.
This review explores advances in bio‐integrated edge computing for healthcare, focusing on co‐designing computing, sensing, and energy strategies to overcome integration and power challenges for optimized, decentralized operation. ABSTRACT Recent advances in bio‐integrated healthcare technologies have enabled continuous, high‐resolution monitoring and ...
Gyuwon Kim, Seungwon Yoo, Tae Woog Kang, Yunuo Huang, Woon‐Hong Yeo   +4 more
wiley   +1 more source

Hyperoxia Improves Hemodynamic Status During Head-up Tilt Testing in Healthy Volunteers A Randomized Study

, 2016
International audienceHead-up tilt test is useful for exploring neurally mediated syncope. Adenosine is an ATP derivative implicated in cardiovascular disturbances that occur during head-up tilt test.
Joulia, Fabrice, Fromonot, Julien, Rostain, Jean-Claude, Guieu, Régis, Gavarry, Olivier, Lucciano, Michel, Chaumet, Guillaume, Deharo, Jean-Claude, Brignole, Michele, Boussuges, Alain   +9 more
core   +1 more source

Vitamin C‐Induced Photo‐Redox Threshold Enables High‐Fidelity Volumetric Printing of Collagen

Advanced Materials, EarlyView.
Tomographic volumetric printing (TVP) of native proteins is limited by uncontrolled background crosslinking. Here, vitamin C is introduced as a biocompatible redox regulator to establish a tunable nonlinear polymerization threshold response for TVP.
Bin Wang, Amelia Hasenauer, Kristian Ivkovic, Ann‐Sophie Frind, David Fercher, Marcy Zenobi‐Wong   +5 more
wiley   +1 more source

Life‐Like Ferrous Oxide Microspheres from Kombucha

Advanced Materials Interfaces, EarlyView.
Kombucha bacterial cellulose, sodium alginate, and ferrous nitrate self‐assemble into membrane‐enclosed iron oxide microspheres. These microspheres bud daughter vesicles, sustain 24‐h electrochemical oscillations, and filter theta‐band signals.
Panagiotis Mougkogiannis, Anna Nikolaidou, Andrew Adamatzky   +2 more
wiley   +1 more source

Blood Pressure Response to the Head-Up Tilt Test in Benign Paroxysmal Positional Vertigo. [PDF]

J Clin Med, 2023
Kim MJ, Rhim G.
europepmc   +1 more source