Prognostic value of liver shear wave elastography after transcatheter aortic valve implantation in severe aortic stenosis [PDF]
International Journal of Cardiology: Heart & VasculatureBackground: Shear wave elastography (SWE) is a noninvasive ultrasound technique that quantifies liver stiffness. Previous studies have suggested that liver SWE can serve as an indirect marker of hepatic congestion.
Yutaro Sato +12 more
doaj +2 more sources
Quantification and correction of motion influence for nacelle-based lidar systems on floating wind turbines [PDF]
Wind Energy Science, 2023 Inflow wind field measurements from nacelle-based lidar systems offer great potential for different applications including turbine control, load validation, and power performance measurements.
M. Gräfe +3 more
doaj +1 more source
FAST.Farm load validation for single wake situations at alpha ventus [PDF]
Wind Energy Science, 2021 The main objective of the presented work is the validation of the simulation tool FAST.Farm for the calculation of power and structural loads in single wake situations; the basis for the validation is the measurement database of the operating offshore ...
M. Kretschmer +3 more
doaj +1 more source
Effect of Working Hours on The Physical - Chemical Properties of Hydraulic Oil For Agricultural Tractors [PDF]
Kirkuk Journal of Science, 2018 The experiment was carried out on tractors type KOTI model 2013 belongs to North Oil Company/Kirkuk to study the effect of operating time at several levels: 100, 500, 1000, 10000 and 15000 hours of work in some hydraulic oil properties In the tractors ...
Arkan Seddiq
doaj +1 more source
Environment Conservation Journal, 2023 Irrigation has a major role to play in the productivity of winter maize. Precise information about the quantity and quality of irrigation water is the key for higher productivity of winter maize.
Ravish Chandra +2 more
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Liver stiffness quantification in biopsy-proven nonalcoholic fatty liver disease patients using shear wave elastography in comparison with transient elastography [PDF]
Ultrasonography, 2021 Purpose This study prospectively assessed the performance of liver stiffness measurements using point shear-wave elastography (p-SWE) in comparison with transient elastography (TE) in patients with biopsy-proven nonalcoholic fatty liver disease (NAFLD ...
Adele Taibbi +8 more
doaj +1 more source
Lidar-based wake tracking for closed-loop wind farm control [PDF]
Wind Energy Science, 2017 This work presents two advancements towards closed-loop wake redirection of a wind turbine. First, a model-based wake-tracking approach is presented, which uses a nacelle-based lidar system facing downwind to obtain information about the wake.
S. Raach, D. Schlipf, P. W. Cheng
doaj +1 more source
A passively self‐adjusting floating wind farm layout to increase the annual energy production
Wind Energy, 2023 Wake losses inside a wind farm occur due to the aerodynamic interactions when a downwind turbine is in the wake of upwind turbines. The ability of floating offshore wind turbines (FOWTs) to relocate their positions in the horizontal plane introduces an ...
Mohammad Youssef Mahfouz, Po‐Wen Cheng
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Parameterization of wind evolution using lidar [PDF]
Wind Energy Science, 2021 Wind evolution, i.e., the evolution of turbulence structures over time, has become an increasingly interesting topic in recent years, mainly due to the development of lidar-assisted wind turbine control, which requires accurate prediction of wind ...
Y. Chen, D. Schlipf, P. W. Cheng
doaj +1 more source
Localization of wind turbine noise using a microphone array in wind tunnel measurements
Wind Energy, 2022 An experimental investigation on scaled wind turbine models in a wind tunnel with a microphone array is presented. Our study focuses on the localization and quantification of aerodynamic noise sources on rotating wind turbine blades with the aim of ...
Christof Ocker +4 more
doaj +1 more source