Results 21 to 30 of about 341,046 (199)

Comparison of two different optical coherence tomography angiography devices in detecting healthy versus glaucomatous eyes – an observational cross-sectional study

open access: yesBMC Ophthalmology, 2020
Background To understand the differences between two different optical coherence tomography angiography (OCTA) devices in detecting glaucomatous from healthy eyes by comparing their vascular parameters, diagnostic accuracy and test-retest reliability ...
A. R. Kee   +7 more
doaj   +1 more source

Optimization of integrated geological-engineering design of volume fracturing with fan-shaped well pattern

open access: yesPetroleum Exploration and Development, 2023
According to the variable toe-to-heel well spacing, combined with the dislocation theory, discrete lattice method, and finite-element-method (FEM) based fluid-solid coupling, an integrated geological-engineering method of volume fracturing for fan-shaped
Jizhou TANG   +4 more
doaj   +1 more source

Correction of wavelength-dependent laser fluence in swept-beam spectroscopic photoacoustic imaging with a hand-held probe

open access: yesPhotoacoustics, 2020
Recently, we demonstrated an integrated photoacoustic (PA) and ultrasound (PAUS) system using a kHz-rate wavelength-tunable laser and a swept-beam delivery approach.
MinWoo Kim   +3 more
doaj   +1 more source

Correlations among age, sex, axial length, and subfoveal choroidal thickness in the choriocapillaris structure analyzed using multiple en face image averaging optical coherence tomography angiography.

open access: yesPLoS ONE, 2021
PurposeTo analyze the structure of the choriocapillaris in healthy eyes by using averaged en face images acquired using swept source optical coherence tomography angiography and to examine the changes in the macular profile in relation to age, sex, axial
Ai Ichioka   +5 more
doaj   +2 more sources

Agreement of Anterior Segment Parameters Obtained From Swept-Source Fourier-Domain and Time-Domain Anterior Segment Optical Coherence Tomography. [PDF]

open access: yes, 2018
PurposeTo assess the interdevice agreement between swept-source Fourier-domain and time-domain anterior segment optical coherence tomography (AS-OCT).MethodsFifty-three eyes from 41 subjects underwent CASIA2 and Visante OCT imaging.
Badr, Mai   +6 more
core   +2 more sources

Two-scale momentum theory for very large wind farms [PDF]

open access: yes, 2016
A new theoretical approach is proposed to predict a practical upper limit to the efficiency of a very large wind farm. The new theory suggests that the efficiency of ideal turbines in an ideal very large wind farm depends primarily on a non-dimensional ...
Nishino, Takafumi
core   +2 more sources

Wide-field swept-source OCTA in the assessment of retinal microvasculature in early-stage diabetic retinopathy

open access: yesBMC Ophthalmology, 2022
Background To perform a quantitative analysis of retinal microvasculature in patients with early-stage diabetic retinopathy (DR) using wide-field swept-source optical coherence tomography angiography (SS-OCTA).
Xiang-ning Wang   +5 more
doaj   +1 more source

Influence of the Heights of Low-Level Jets on Power and Aerodynamic Loads of a Horizontal Axis Wind Turbine Rotor

open access: yesAtmosphere, 2019
The influence of the heights of low-level jets (LLJs) on the rotor power and aerodynamic loads of a horizontal axis wind turbine were investigated using the fatigue, aerodynamics, structures, and turbulence code. The LLJ and shear inflow wind fields were
Xuyao Zhang, Congxin Yang, Shoutu Li
doaj   +1 more source

Vertical wind profile characterization and identification of patterns based on a shape clustering algorithm [PDF]

open access: yes, 2019
Wind power plants are becoming a generally accepted resource in the generation mix of many utilities. At the same time, the size and the power rating of individual wind turbines have increased considerably.
Bueso Sánchez, María del Carmen   +4 more
core   +2 more sources

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