Results 61 to 70 of about 21,441 (307)
Extension of Martian orbits using continuous low-thrust propulsion [PDF]
, 2012 There has recently been significant interest in exploration of the Martian surface and atmosphere with a view to future human exploration. Thus missions must be developed which are responsive to these scientific goals.
Macdonald, Malcolm +2 more
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Shoulder joint contact force during lever-propelled wheelchair propulsion [PDF]
, 2015 The aim of this study was to obtain quantitative results about shoulder contact force during wheelchair lever propulsion when the gear ratio of the lever propulsion mechanism is changing.
Stefanov, D. +4 more
core +1 more source
Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators
Advanced Engineering Materials, EarlyView.A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad +6 more
wiley +1 more source
The Esophageal Propulsive Force: Esophageal Response to Acute Obstruction* [PDF]
Journal of Clinical Investigation, 1967 The response of the normal human esophagus to an obstructing intraluminal bolus was investigated and compared to the response evoked by transient intraluminal distention. A balloon, immobilized within the esophagus by external attachment to a force transducer, was inflated with from 3 to 25 ml of air for from 3 to 210 sec.
Winship, Daniel H., Zboralske, F. Frank
openaire +2 more sources
Advanced Engineering Materials, EarlyView.The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee +7 more
wiley +1 more source
Journal of NeuroEngineering and Rehabilitation, 2020 Background Handrim wheelchair propulsion is often assessed in the laboratory on treadmills (TM) or ergometers (WE), under the assumption that they relate to regular overground (OG) propulsion. However, little is known about the agreement of data obtained
Rick de Klerk +4 more
doaj +1 more source
The Propulsion Committee: final report and recommendations to the 25th ITTC [PDF]
, 1970 Details the investigation and findings of the 25th ITTC Propulsion Committee over the period 2005-2008. Tasks were as follows:1. Update the state-of-the-art for propulsion systems emphasizing developments since the 2005 ITTC conference.2.
Kim, K. +8 more
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Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced Engineering Materials, EarlyView.An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara +8 more
wiley +1 more source
ActuatorsTo examine the biomechanical demands of manual wheelchair propulsion, it is crucial to determine the wheelchair user’s (WCU) force for propulsion technique parameter calculation.
Jelmer Braaksma +5 more
doaj +1 more source
Nanobalance: the European balance for micro-propulsion [PDF]
, 2009 Within a contract of the European Space Agency, Thales Alenia Space Italia in co-operation with the Italian National Metrology Institute and Polytechnic of Turin, has designed and implemented the Nanobalance Facility, a device for the direct ...
BALAGUER E +11 more
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