Results 21 to 30 of about 11,115,235 (279)

Explaining the decline of US wind output power density

Environmental Research Communications, 2023
US wind power generation has grown significantly over the last decades, in line with the number and average size of operating turbines. However, wind power density has declined, both measured in terms of wind power output per rotor swept area as well as ...
Peter Regner, Katharina Gruber, Sebastian Wehrle, Johannes Schmidt   +3 more
doaj   +1 more source

Effect of Leading/Trailing Edge Swept Impeller on Flow Characteristics of Low Specific Speed Centrifugal Compressor

Energies, 2023
A low specific speed centrifugal compressor with leading/trailing edge combined sweep blades is proposed. The performance and internal flow field characteristics are analyzed in detail by numerical simulations, and a bench test is carried out.
Hongyan Tian, Kang Hou, Ding Tong, Sen Lin, Chicheng Ma   +4 more
doaj   +1 more source

High-Linear Frequency-Swept Lasers with Data-Driven Control

Photonics, 2023
The frequency-swept laser (FSL) is applied widely in various sensing systems in the scientific and industrial fields, especially in the light detection and ranging (Lidar) area.
Haohao Zhao, Dachao Xu, Zihan Wu, Liang Sun, Guohui Yuan, Zhuoran Wang   +5 more
doaj   +1 more source

Depth trajectory and performance of a trawl used for an international bottom trawl survey in the Mediterranean

Scientia Marina, 2002
An international bottom trawl survey (the MEDITS programme) has been carried out every year in the Mediterranean since 1994. During each survey, about 1000 hauls are done by a fleet of 8 to 11 vessels from 10 to 800 m depth, applying a unique ...
Jacques Bertrand, Iole Leonori, Pierre Yves Dremière, Giulio Cosimi   +3 more
doaj   +1 more source

Energy Efficiency Optimization Design of a Forward-Swept Axial Flow Fan for Heat Pump

Frontiers in Energy Research, 2021
As one of the key components of the heat pump system, compared to that of a conventional axial fan, the blade tip area of a forward-swept axial fan is much larger than its blade root, which is the main noise source of the fan and also has an important ...
Ke Yang, Ke Yang, Shuiqing Zhou, Shuiqing Zhou, Yinjie Hu, Yinjie Hu, Huaxin Zhou, Huaxin Zhou, Weiya Jin, Weiya Jin   +9 more
doaj   +1 more source

Problems of ensuring traffic flow on a Basic turbo roundabout with non-standard curvilinear entries (a case study) [PDF]

Przegląd Komunikacyjny, 2023
: With ever-increasing motorisation and the desire for greater traffic safety, conventional roundabouts and turbo roundabouts are being designed. Turbo roundabouts provide greater traffic safety than conventional roundabouts due to the segregation of ...
Alicja Sołowczuk, Weronika Benedysiuk
doaj   +1 more source

CHOROIDAL NEOVASCULAR AREA AND VESSEL DENSITY COMPARISON BETWEEN TWO SWEPT-SOURCE OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY DEVICES.

Retina, 2020
PURPOSE To compare choroidal neovascularization (CNV) area and vessel density (VD) measurements between two different swept-source optical coherence tomography angiography (SS-OCTA) devices.
A. Ohayon, R. Sacconi, O. Semoun, Eleonora Corbelli, E. Souied, G. Querques   +5 more
semanticscholar   +1 more source

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

BMC 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, V. C. H. Yip, E. L. T. Tay, C. W. Lim, J. Cheng, H. Y. Teo, C. H. Chua, L. W. L. Yip   +7 more
doaj   +1 more source

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

Petroleum 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, Xiaohua WANG, Xianfei DU, Bing MA, Fengshou ZHANG   +4 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.

PLoS 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, Sotaro Ooto, Akihito Uji, Saki Manabe, Chieko Shiragami, Akitaka Tsujikawa   +5 more
doaj   +2 more sources