Results 111 to 120 of about 171,653 (325)

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

Advanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey, Arjen van den Berg, Sandra Ruiz Gomez, Claire Donnelly, Dirk Grundler, Sam Ladak   +5 more
wiley   +1 more source

Cerebral blood flow changes during tilt table testing in healthy volunteers, as assessed by Doppler imaging of the carotid and vertebral arteries

Clinical Neurophysiology Practice, 2018
Objectives: Using different techniques, reduction of cerebral blood flow (CBF) during orthostatic stress were demonstrated. One study reported flow reduction of the right internal carotid (ICA) and vertebral (VA) artery during orthostatic stress by ...
C. (Linda).M.C. van Campen, Freek W.A. Verheugt, Frans C. Visser   +2 more
doaj   +1 more source

Gradient Compression Stockings may Prevent Recovery after Bed Rest Deconditioning [PDF]

Introduction: Astronauts continue to wear a compression garment during and immediately after landing to prevent orthostatic intolerance (OI). We recently developed a custom-fitted, 3-piece garment that consists of thigh-high stockings with biker-style ...
Lee, Stuart M., Platts, Steven H., Stenger, Michael B., Westby, Christian M., Willig, Michael C.   +4 more
core   +1 more source

Measurement and Compensation of Horizontal Crabbing at the Cornell Electron Storage Ring Test Accelerator

, 2014
In storage rings, horizontal dispersion in the rf cavities introduces horizontal-longitudinal (xz) coupling, contributing to beam tilt in the xz plane. This coupling can be characterized by a "crabbing" dispersion term {\zeta}a that appears in the normal
Chatterjee, A., Ehrlichman, M. P., Hartung, W., Heltsley, B., Peterson, D. P., Rider, N., Rubin, D., Sagan, D., Shanks, J. P., Wang, S. T.   +9 more
core   +2 more sources

Head-up tilt testing in older syncope patients: a systematic review

Age and Ageing
Abstract Background In older syncope patients, medical histories are often less reliable due to retrograde amnesia and cognitive impairment. Therefore, additional tests may be needed to reach a diagnosis. We conducted a systematic review to evaluate positivity rates and safety of head-up tilt testing (
Ruiter, S.C. de, Marum, R.J. van, Ruiter, J.H., Hemels, M.E.W., Groot, J.R. de, Jansen, R.   +5 more
openaire   +3 more sources

Tunable and Recyclable Piezoelectric Biomaterials via Ion‐Directed Guanine‐Quadruplex Assembly

Advanced Functional Materials, EarlyView.
Guanine‐quadruplex (GQ) assemblies, formed via ion‐mediated self‐assembly of amphiphilic guanine derivatives, are introduced as tunable and recyclable piezoelectric biomaterials. Distinct alkali ions induce unique dipole configurations and piezoelectric outputs, with K⁺ yielding the highest performance.
Seungho Lee, Sangyun Na, Yumi Cho, Gaeun Park, Seung Hak Oh, Jaejun Kim, Byoung‐Ki Cho, Sang Kyu Kwak, Ja‐Hyoung Ryu, Hyunhyub Ko   +9 more
wiley   +1 more source

Pulsed Wave Doppler Ultrasound Is Useful to Assess Vasomotor Response in Patients with Multiple System Atrophy and Well Correlated with Tilt Table Study

The Scientific World Journal, 2012
The study aim was to assess sympathetic vasomotor response (SVR) by using pulsed wave Doppler (PWD) ultrasound in patients with multiple system atrophy (MSA) and correlate with the tilt table study.
Ke-Vin Chang, Wen-Shiang Chen, Ruey-Meei Wu, Ssu-Yuan Chen, Hsiu-Yu Shen, Ching Lan, Yen-Ho Wang   +6 more
doaj   +1 more source

In Situ Study of Resistive Switching in a Nitride‐Based Memristive Device

Advanced Functional Materials, EarlyView.
In situ TEM biasing experiment demonstrates the volatile I‐V characteristic of MIM lamella device. In situ STEM‐EELS Ti L2/L3 ratio maps provide direct evidence of the oxygen vacancies migrations under positive/negative electrical bias, which is critical for revealing the RS mechanism for the MIM lamella device.
Di Zhang, Rohan Dhall, Matthew M. Schneider, Cun Li, Chengyu Song, Sundar Kunwar, Hongyi Dou, Natanii R. Yazzie, Henry Tran, Daniel Appuing, Jim Ciston, Nicholas G. Cucciniello, Pinku Roy, Michael T. Pettes, John Watt, Winson Kuo, Haiyan Wang, Ye Cao, Rodney J. McCabe, Aiping Chen   +19 more
wiley   +1 more source

Maya Blue‐Inspired Hybrid Coating for Robust and Superhydrophilic Solar Evaporators Using Commercial Black Acrylic Paint

Advanced Functional Materials, EarlyView.
This study demonstrates a Maya blue‐inspired hybrid solar evaporator using commercial black acrylic paint, achieving 98% solar‐thermal conversion efficiency and 2.39 kg m−2 h−1 water evaporation rate through a durable, hydrophilic organic–inorganic structure that enables scalable, cost‐effective desalination and wastewater purification.
Dao Thi Dung, Do Van Lam, Young Kim, Wonzee Jung, Kanghoon Yim, Seung‐Mo Lee   +5 more
wiley   +1 more source

Seizure-Like Activities during Head-Up Tilt Test-Induced Syncope

Yonsei Medical Journal, 2010
Some patients with neurally mediated reflex syncope may be misdiagnosed as epilepsy because myoclonic jerky movements are observed during syncope. The seizure-like activities during the head-up tilt test (HUT) have been rarely reported. The purpose of this study was to assess the characteristics of these seizure-like activities and evaluate whether ...
Song, Pil Sang, Kim, June Soo, Park, Jungwae, Yim, Hye Ran, Huh, June, Kim, Jun Hyung, On, Young Keun   +6 more
openaire   +2 more sources