Results 91 to 100 of about 208,832 (308)
MathematicsThe utilization of unmanned sailboats as a burgeoning instrument for ocean exploration and monitoring is steadily rising. In this study, a dual sail configuration is put forth to augment the sailboats’ proficiency in its wind-catching ability and adapt ...
Shipeng Fang +6 more
doaj +1 more source
Gamma guidance of trajectories for coplanar, aeroassisted orbital transfer [PDF]
The optimization and guidance of trajectories for coplaner, aeroassisted orbital transfer (AOT) from high Earth orbit (HEO) to low Earth orbit (LEO) are examined. In particular, HEO can be a geosynchronous Earth orbit (GEO).
Miele, A., Wang, T.
core +1 more source
Measuring method of drag coefficient, lift coefficient and equivalent roughness of revetment block
PROCEEDINGS OF HYDRAULIC ENGINEERING, 2000 This study examines measuring methods of drag coefficient, lift coefficient and equivalent roughness that are necessary for mechanical design of revetment blocks set on river banks. The setting method of blocks and the influence of the Reynolds number on drag force and lift force are examined by checking the experimental results.
Kouichi YAMAMOTO +6 more
openaire +2 more sources
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To determine the concentration of glial fibrillary acidic protein (GFAP) in cerebrospinal fluid (CSF) and plasma in Alexander disease (AxD) and whether GFAP levels are predictive of disease phenotypes. Methods CSF and plasma were collected (longitudinally when available) from AxD participants and non‐AxD controls.
Amy T. Waldman +9 more
wiley +1 more source
Effect of Gurney Flap Geometry on a S809 Airfoil
International Journal of Aerospace Engineering, 2019 In this paper, the effect of Gurney flap shapes on wind turbine blade airfoil S809 has been studied by numerical simulation. First, the O-type grid is used in the numerical simulation. By comparing with experimental data, such as the lift force, the drag
Li-Shu Hao, Yong-Wei Gao
doaj +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Glioma recurrence severely impacts patient prognosis, with current treatments showing limited efficacy. Traditional methods struggle to analyze recurrence mechanisms due to challenges in assessing tumor heterogeneity, spatial dynamics, and gene networks.
Lei Qiu +10 more
wiley +1 more source
NUMERICAL SIMULATION OF FLOW ROUND FREE SPANNING SUBMARINE PIPELINE AT HIGH REYNOLDS NUMBER
Jixie qiangdu, 2018 Free spanning submarine pipeline work in the harsh condition and has many failure modes. Vortex-induced vibration is a significant cause leading to its fatigue failure.
HU Qin +3 more
doaj
Wind Tunnel Testing of Active Flow Control on High-Lift Common Research Model [PDF]
A 10%-scale high-lift version of the Common Research Model (CRM-HL) and an Active Flow Control (AFC) version of the model equipped with a simple-hinged flap (CRM-SHLAFC) were successfully tested.
Andino, Marlyn Y. +6 more
core +1 more source
Effects of Biological Sex and Age on Cerebrospinal Fluid Markers—A Retrospective Observational Study
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Cerebrospinal fluid (CSF) analysis is a key diagnostic tool for neurological diseases. To date, only a few studies have investigated in larger cohorts the effect of age and biological sex on diagnostic markers extracted from CSF. Methods For this retrospective observational study, 4163 CSF findings (2012–2020) were evaluated.
Isabel‐Sophie Hafer +3 more
wiley +1 more source
NASA low- and medium-speed airfoil development [PDF]
The status of NASA low and medium speed airfoil research is discussed. Effects of airfoil thickness-chord ratios varying from 9 percent to 21 percent on the section characteristics for a design lift coefficient of 0.40 are presented for the initial low ...
Beasley, W. D. +2 more
core +1 more source