Results 1 to 10 of about 571,066 (146)

Development of the high angular resolution 360° LiDAR based on scanning MEMS mirror [PDF]

open access: yesScientific Reports, 2023
Light detection and ranging (LiDAR) using various operational principles has been applied in many fields, e.g., robotics navigation, autonomous vehicles, unmanned aerial flyers, land surveying, etc. The multichannel LiDAR system is of great importance in
Donghai Yang   +8 more
doaj   +2 more sources

Diffusion tractography of kidney by high angular resolution diffusion imaging [PDF]

open access: yesMagnetic Resonance Letters
Diffusion magnetic resonance imaging (MRI) has been utilized to probe the renal microstructures but investigating the three-dimensional (3D) tubular network still presents significant challenges due to the complicated architecture of kidney.
Surendra Maharjan   +4 more
doaj   +2 more sources

High angular resolution diffusion-weighted imaging in mild traumatic brain injury [PDF]

open access: yesNeuroImage: Clinical, 2017
We sought to investigate white matter abnormalities in mild traumatic brain injury (mTBI) using diffusion-weighted magnetic resonance imaging (DW-MRI). We applied a global approach based on tract-based spatial statistics skeleton as well as constrained ...
Mehrbod Mohammadian   +12 more
doaj   +2 more sources

An Acousto-Optical Sensor with High Angular Resolution [PDF]

open access: yesSensors, 2012
The paper introduces a new laser interferometry-based sensor for diagnosis of random media by means of high accuracy angle measurements and describes the results of its development and testing.
Igor Lukin, Gennady Kaloshin
doaj   +2 more sources

Converting Multi-shell and Diffusion Spectrum Imaging to High Angular Resolution Diffusion Imaging [PDF]

open access: yesFrontiers in Neuroscience, 2016
Multi-shell and diffusion spectrum imaging (DSI) are becoming increasingly popular methods of acquiring diffusion MRI data in a research context. However, single-shell acquisitions, such as diffusion tensor imaging (DTI) and high angular resolution ...
Fang-Cheng Yeh, Timothy D Verstynen
doaj   +2 more sources

Dusty Blue Supergiants: News from High-Angular Resolution Observations

open access: yesAdvances in Astronomy, 2014
An overview is presented of the recent advances in understanding the B[e] phenomenon among blue supergiant stars in light of high-angular resolution observations and with an emphasis on the results obtained by means of long baseline optical stellar ...
W. J. de Wit   +2 more
doaj   +3 more sources

Investigating close binary supermassive black holes at high angular resolution [PDF]

open access: yesSerbian Astronomical Journal, 2021
Gravitational waves (GW) in the nano-Hz domain are expected to be radiated by close-binaries of supermassive black holes (CB-SMBHs; components bound in a Keplerian binary at mutual distance less than ~ 0.1 pc), which are relicts of galaxy ...
Kovačević A.
doaj   +1 more source

Gamma Cas Stars as Be+White Dwarf Binary Systems

open access: yesThe Astrophysical Journal Letters, 2022
The origin of the bright and hard X-ray emission flux among the γ Cas subgroup of B-emission line (Be) stars may be caused by gas accretion onto an orbiting white dwarf (WD) companion.
Douglas R. Gies   +2 more
doaj   +1 more source

The Orbital and Physical Properties of Five Southern Be+sdO Binary Systems

open access: yesThe Astronomical Journal, 2023
Close binary interactions may play a critical role in the formation of the rapidly rotating Be stars. Mass transfer can result in a mass gainer star spun up by the accretion of mass and angular momentum, while the mass donor is stripped of its envelope ...
Luqian Wang   +3 more
doaj   +1 more source

The Great Dimming of the Hypergiant Star RW Cephei: CHARA Array Images and Spectral Analysis

open access: yesThe Astronomical Journal, 2023
The cool hypergiant star RW Cephei is currently in a deep photometric minimum that began several years ago. This event bears a strong similarity to the Great Dimming of the red supergiant Betelgeuse that occurred in 2019–2020.
Narsireddy Anugu   +17 more
doaj   +1 more source

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