Results 71 to 80 of about 391,161 (334)
Mathematical Biosciences and Engineering, 2015 Mucociliary clearance is the first line of defense in our airway. The purpose of this study is to identify and study key factors in the cilia motion that influence the transport ability of the mucociliary system.
Ling Xu, Yi Jiang
doaj +1 more source
Evaluation of the use of on-board spacecraft energy storage for electric propulsion missions [PDF]
On-board spacecraft energy storage represents an under utilized resource for some types of missions that also benefit from using relatively high specific impulse capability of electric propulsion.
Palmer, F. M., Poeschel, R. L.
core +1 more source
Atomic Size Misfit for Electrocatalytic Small Molecule Activation
Advanced Functional Materials, EarlyView.This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong +3 more
wiley +1 more source
Toward Smart Footwear to Track Frailty Phenotypes—Using Propulsion Performance to Determine Frailty
Sensors, 2018 Frailty assessment is dependent on the availability of trained personnel and it is currently limited to clinic and supervised setting. The growing aging population has made it necessary to find phenotypes of frailty that can be measured in an ...
Hadi Rahemi +3 more
doaj +1 more source
Deployment of Solar Sails by Joule Effect: Thermal Analysis and Experimental Results
Aerospace, 2020 Space vehicles may be propelled by solar sails exploiting the radiation pressure coming from the sun and applied on their surfaces. This work deals with the adoption of Nickel-Titanium Shape Memory Alloy (SMA) elements in the sail deployment mechanism ...
Gianluigi Bovesecchi +4 more
doaj +1 more source
System controls challenges of hypersonic combined-cycle engine powered vehicles [PDF]
Hypersonic aircraft with air-breathing engines have been described as the most complex and challenging air/space vehicle designs ever attempted. This is particularly true for aircraft designed to accelerate to orbital velocities.
Ianculescu, George D. +1 more
core +1 more source
Micropatterned Biphasic Printed Electrodes for High‐Fidelity on‐Skin Bioelectronics
Advanced Functional Materials, EarlyView.Micropatterned biphasic printed electrodes achieve unprecedented skin conformity and low impedance by combining liquid‐metal droplets with microstructured 3D lattices. This scalable approach enables high‐fidelity detection of ECG, EMG, and EEG signals, including alpha rhythms from the forehead, with long‐term comfort and stability.
Manuel Reis Carneiro +4 more
wiley +1 more source
Effect of Feedback on Foot Strike Angle and Forward Propulsion in People With Stroke
IEEE Transactions on Neural Systems and Rehabilitation EngineeringEffective retraining of foot elevation and forward propulsion is essential in stroke survivors’ gait rehabilitation. This study aimed to investigate the effect of providing real-time feedback on foot strike angle (FSA) and forward propulsion in ...
Carmen J. Ensink +3 more
doaj +1 more source
Photonic spin control for solar wind electric sail
, 2013 The electric solar wind sail (E-sail) is a novel, efficient propellantless propulsion concept which utilises the natural solar wind for spacecraft propulsion with the help of long centrifugally stretched charged tethers.
Janhunen +4 more
core +1 more source
Advanced Functional Materials, EarlyView.The NNR‐n series of oligomeric nanographenes delivers exceptional emission performance. This work shows that this performance is originated by their ladder‐type structure, which effectively deactivates low‐frequency vibronic modes. This deactivation neglects the main pathway for non‐emissive deactivation, even in the near‐infrared region. The potential
Marcos Díaz‐Fernández +12 more
wiley +1 more source