Results 31 to 40 of about 502,308 (345)

Enhanced Sensitivity of Surface Acoustic Wave-Based Rate Sensors Incorporating Metallic Dot Arrays

open access: yesSensors, 2014
A new surface acoustic wave (SAW)-based rate sensor pattern incorporating metallic dot arrays was developed in this paper. Two parallel SAW delay lines with a reverse direction and an operation frequency of 80 MHz on a same X-112°Y LiTaO3 wafer are ...
Wen Wang   +4 more
doaj   +1 more source

High-Frequency Oscillatory Ventilation as a Rescue Mode for Refractory Hypercarbia in Children

open access: yesTokyo Women's Medical University Journal, 2022
High-frequency oscillatory ventilation (HFOV) use in the airway obstructive status can be relatively contraindicated by the risk of air trapping leading to hemodynamic compromise.
Mai Miyaji   +4 more
doaj   +1 more source

OSCILLATORY ROLL OF THE ROAD ROLLER WITH A DOUBLE SIDE PLATE

open access: yesВестник СибАДИ, 2019
Introduction. Soil compaction plays a crucial role in the construction of road foundations. The quality of this process is influenced by the type and modes of application of external force from the seal.
S. V. Saveliev   +3 more
doaj   +1 more source

Neutrino oscillations [PDF]

open access: yesProgress in Particle and Nuclear Physics, 2013
This review summarizes recent experimental and theoretical progress in determining neutrino mixing angles and masses through neutrino oscillations. We describe the basic physics of oscillation phenomena in vacuum and matter, as well as the status of solar, reactor, atmospheric, and accelerator neutrino experiments that probe these phenomena.
Balantekin, A. B., Haxton, W. C.
openaire   +2 more sources

Photonic Free-Electron Lasers

open access: yesIEEE Photonics Journal, 2012
A photonic free-electron laser (pFEL) produces coherent Cerenkov radiation from a set of parallel electron beams streaming through a photonic crystal. The function of the crystal is to slow down the phase velocity of a copropagating electromagnetic wave,
P. J. M. van der Slot   +4 more
doaj   +1 more source

Fabrication of Fiber Bragg Gratings by Visible Femtosecond Laser for Multi-kW Fiber Oscillator

open access: yesIEEE Photonics Journal, 2022
In this paper, we fabricate a pair of fiber Bragg gratings (FBGs) in large mode area double cladding fiber (LMA-DCF, core/inner cladding diameter: 20/400 μm) by visible (515 nm) femtosecond laser and phase mask for the first time to ...
Hongye Li   +9 more
doaj   +1 more source

Cilia oscillations

open access: yesPhilosophical Transactions of the Royal Society B: Biological Sciences, 2019
Cilia, or eukaryotic flagella, are microscopic active filaments expressed on the surface of many eukaryotic cells, from single-celled protozoa to mammalian epithelial surfaces. Cilia are characterized by a highly conserved and intricate internal structure in which molecular motors exert forces on microtubule doublets causing cilia oscillations.
Yi Man, Feng Ling, Eva Kanso
openaire   +3 more sources

A Temperature-Compensated Single-Crystal Silicon-on-Insulator (SOI) MEMS Oscillator with a CMOS Amplifier Chip

open access: yesMicromachines, 2018
Self-sustained feedback oscillators referenced to MEMS/NEMS resonators have the potential for a wide range of applications in timing and sensing systems.
Mohammad S. Islam   +5 more
doaj   +1 more source

A Low Power Low Phase Noise Oscillator for MICS Transceivers

open access: yesSensors, 2017
A low-power, low-phase-noise quadrature oscillator for Medical Implantable Communications Service (MICS) transceivers is presented. The proposed quadrature oscillator generates 349~689 MHz I/Q (In-phase and Quadrature) signals covering the MICS band. The
Dawei Li   +3 more
doaj   +1 more source

A Novel Single-Axis MEMS Tilt Sensor with a High Sensitivity in the Measurement Range from 0∘ to 360∘

open access: yesSensors, 2018
In this paper, a novel single-axis MEMS tilt sensor is presented. It contains a hexagonal proof mass, six micro-lever force amplifiers and three double-ended-tuning fork (DETF) resonant strain gauges. The proof mass is placed in the center with the micro-
Shudong Wang   +4 more
doaj   +1 more source

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