Results 31 to 40 of about 516,161 (252)

Formation Flight of Fixed-Wing UAVs: Dynamic Modeling, Guidance Design, and Testing in Realistic Scenarios

open access: yesAerospace
Autonomous unmanned flight based on fixed-wing aircraft constitutes a practical and economical solution for transport missions to remote destinations or disadvantaged communities, for which their payload and range represent interesting figures of merit ...
Carlo E.D. Riboldi, Marco Tomasoni
doaj   +1 more source

Characteristics of unsteady flow around a vehicle affecting its high-speed stability during a dynamic steering action

open access: yesNihon Kikai Gakkai ronbunshu, 2014
In order to clarify unsteady flow structure’s behavior that improves vehicle’s high-speed stability during steering input, on-road analysis was conducted.
Yoshihiro OKADA   +3 more
doaj   +1 more source

Sleep EEG Derived From Behind-the-Ear Electrodes (cEEGrid) Compared to Standard Polysomnography: A Proof of Concept Study

open access: yesFrontiers in Human Neuroscience, 2018
Electroencephalography (EEG) recordings represent a vital component of the assessment of sleep physiology, but the methodology presently used is costly, intrusive to participants, and laborious in application.
Annette Sterr   +13 more
doaj   +1 more source

Evolution of Wake Vortices and Energy Characteristics of Mixed-flow Pumps Under Stall Conditions [PDF]

open access: yesJournal of Applied Fluid Mechanics
Unsteady wake dynamics and associated energy dissipation mechanisms in mixed-flow pumps remain critical challenges detrimentally affecting operational stability and efficiency, particularly under off-design operating conditions.
Y. Chen, W. Li, L. Ji, S. Li, Y. Long
doaj   +1 more source

Numerical Study of the Effect of Rail Modelling Method on Train Aerodynamic Performance and Slipstream [PDF]

open access: yesJournal of Applied Fluid Mechanics
The high-speed movement of trains generates train-induced wind, commonly referred to as slipstream, which presents a specific safety concern for passengers and personnel.
Y. Ma, J. Zhang, J. Shi, Y. Cao
doaj   +1 more source

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

open access: yesMolecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

open access: yesMolecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary   +1 more
wiley   +1 more source

Measurement of mean fields in the intermediate wake of a heated cylinder

open access: yesNihon Kikai Gakkai ronbunshu, 2019
Measurements are made by a newly designed high-precision thermo-anemometer in the wake of a heated cylinder of D=0.013 and 0.030 m. The purpose of this work is to make clear the effects of cylinder heating on the mean field in the wake.
Hideaki WATANABE   +2 more
doaj   +1 more source

The VHL tumor suppressor at the crossroad of protein folding, aggregation, and cancer

open access: yesMolecular Oncology, EarlyView.
Mutations, environmental stress, and chaperone dysfunction can destabilize pVHL, promoting its conversion from the native folded state into amyloid‐like assemblies. This transition may contribute to protein storage, cell dormancy, survival, and drug resistance.
Lara Abad   +2 more
wiley   +1 more source

Effects of Low Reynolds Number on Wake-Generated Unsteady Flow of an Axial-Flow Turbine Rotor

open access: yesInternational Journal of Rotating Machinery, 2005
The unsteady flow field downstream of axial-flow turbine rotors at low Reynolds numbers was investigated experimentally using hot-wire probes. Reynolds number, based on rotor exit velocity and rotor chord length Re out,RT
Matsunuma Takayuki, Tsutsui Yasukata
doaj   +2 more sources

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