Results 51 to 60 of about 1,044,517 (354)

Exercise Interventions in Children, Adolescents and Young Adults With Paediatric Bone Tumours—A Systematic Review

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Bone tumours present significant challenges for affected patients, as multimodal therapy often leads to prolonged physical limitations. This is particularly critical during childhood and adolescence, as it can negatively impact physiological development and psychosocial resilience.
Jennifer Queisser, Claire Laurie, Teresa Schmidt, Irene von Luettichau, Peter Bekkering, Sabine Kesting   +5 more
wiley   +1 more source

Experimental Investigation of Aerodynamic Interaction in Non-Parallel Tandem Dual-Rotor Systems for Tiltrotor UAV

Drones
The distributed electric tilt-rotor Unmanned Aerial Vehicle (UAV) combines the vertical take-off and landing (VTOL) capability of helicopters with the high-speed cruise performance of fixed-wing aircraft, offering a transformative solution for Urban Air ...
He Zhu, Yuhao Du, Hong Nie, Zhiyang Xin, Xi Geng   +4 more
doaj   +1 more source

Numerical simulation of aerodynamic interference between ejected payload and the parent aircraft

RUDN Journal of Engineering Research, 2018
The purpose of this paper is to develop reliable methodology for numerical modeling of the interference between parent aircraft and ejectable payload and to investigate the influence of the interference on aerodynamic characteristics of the payload.
Leonid V Bykov, Oleg A Pashkov, Mikhail N Pravidlo, Dmitry S Yanyshev   +3 more
doaj   +1 more source

Wing in Ground Effect over a Wavy Surface [PDF]

INCAS Bulletin, 2018
A vortex method has been used to investigate the effect of a wavy ground on the aerodynamic forces acting on a wing that flies in its proximity. The air is considered inviscid and incompressible.
Valentin Adrian Jean BUTOESCU
doaj   +1 more source

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

Simplified stability criteria for drone/carrier-aircraft close range flight

Hangkong gongcheng jinzhan
Both drone swarm intensive flight and drone aerial recovery involve the stability problem of drone/carrier-aircraft flight in close range interference flow field. This paper proposes an aerodynamic derivative model for drone/carrier-aircraft interference
HU Handong, WANG Wenkai, JIANG Xiong, SI Fangfang, LIU Fujun   +4 more
doaj   +1 more source

Research on Unsteady Aerodynamic Interference for the Tiltrotor Aircraft in Hover

Hangkong gongcheng jinzhan, 2019
The high resolution numerical simulation for rotor/wing-body interaction flow-field in hover is crucial for the accurate prediction of aerodynamic performance of the tilt-rotor aircraft, and is the one of the important issues of helicopter aerodynamics ...
Sun Kaijun, Zhang Bihui, Fu Yiwei, Zhang Lian   +3 more
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Numerical Investigation of Aerodynamic Interference in Complete Helicopter Configurations [PDF]

International Journal of Aeronautical and Space Sciences, 2011
Unsteady flow simulations of complete helicopter configurations were conducted, and the flow fields and the aerodynamic interferences between the main rotor, fuselage, and tail rotor were investigated. For these simulations, a three-dimensional flow solver based on unstructured meshes was used, coupled with an overset mesh technique to handle relative ...
Hee-Dong Lee, Dong-Ok Yu, Oh-Joon Kwon, Hee-Jung Kang   +3 more
openaire   +1 more source

Forces on Obstacles in Rotor Wake – A GARTEUR Action Group [PDF]

, 2017
The paper describes the objectives and the structure of the GARTEUR Action Group HC/AG-22 project which deals with the basic research about the forces acting on obstacles when immersed in rotor wakes.
Bakker, Richard, Barakos, George, Boisard, Ronan, Chirico, Giulia, De Gregorio, Fabrizio, Gallas, Quentin, Gibertini, Giuseppe, Giuni, Michea, Green, Richard, Schmid, Matthias, Schwarz, Thorsten, Visingardi, Antonio, Voutsinas, Spyros, Zagaglia, Daniele   +13 more
core   +1 more source