Results 61 to 70 of about 2,793 (286)
Upper Cervical Cord Area as a Biomarker of Conversion to Secondary Progressive Multiple Sclerosis
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective This study assessed whether upper cervical cord area (UCCA) measured on routine brain MRI can serve as a biomarker of conversion to SPMS. Methods This is a single‐center retrospective cohort study of RRMS patients with cross‐sectional and longitudinal analyses of clinical and MRI data. Future SPMS converters were matched by age, sex,
Nabil K. El Ayoubi +8 more
wiley +1 more source
A Quick Start Method for MEMS Disk Resonant Gyroscope
Sensors, 2021 High-precision disk resonator gyroscope has a high quality factor in order to improve the performance of the gyroscope, as the high quality factor can lead to a long starting time.
Xiaodong Xu, Xiaowei Liu, Yufeng Zhang
doaj +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Micromachines, 2018 This paper demonstrates the four fold enhancement in quality factor (Q) of a very high frequency (VHF) band piezoelectric Aluminum Nitride (AlN) on Silicon (Si) Lamb mode resonator by applying a unique wide acoustic bandgap (ABG) phononic crystal (PnC ...
Muhammad Wajih Ullah Siddiqi +1 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir +5 more
wiley +1 more source
Power scaling of a fundamental-mode thin-disk laser using a gain-enhanced soft-aperture resonator
High Power Laser Science and EngineeringWe present a novel, compact resonator design for large-mode thin-disk lasers, producing 300 W average output power at a 1-kHz repetition rate within a cavity length of less than 5 m.
Renchong Lv +10 more
doaj +1 more source
IET Optoelectronics, 2023 Fano resonance arises from the superposition of a narrow discrete resonance with a continuous state. In this paper, a Fano resonance‐based plasmonic refractive index sensor based on nanoscale metal‐insulator‐metal (MIM) waveguides is proposed and ...
Babak Moeinimaleki +3 more
doaj +1 more source
A Novel Tap Input Coupling Structure for a Narrow Bandpass Filter using TM010 Mode of a Microstrip Circular Disk Resonator [PDF]
, 2002 This paper discusses a new method to couple into the TM010 mode of a microstrip circular-disk resonator. This method can achieve reasonably strong input coupling, which is useful for narrow-band filters with fractional bandwidths of approximately 0.5 ...
Yeo, Kenneth S.K., Lancaster, Michael J.
core
Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions
Advanced Functional Materials, EarlyView.DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng +7 more
wiley +1 more source
Improved optomechanical disk resonator sitting on a pedestal mechanical shield
New Journal of Physics, 2015 We experimentally demonstrate the controlled enhancement of the mechanical quality factor Q of gallium arsenide disk optomechanical resonators. Disks vibrating at 1.3 GHz with a mechanical shield integrated in their pedestal show a Q improvement by a ...
Dac Trung Nguyen +8 more
doaj +1 more source