Results 51 to 60 of about 195,565 (345)
Untethered soft robotic matter with passive control of shape morphing and propulsion
Science Robotics, 2019 Untethered, soft robotic matter repeatedly self-morphs and propels in response to thermal stimuli via active hinges. There is growing interest in creating untethered soft robotic matter that can repeatedly shape-morph and self-propel in response to ...
Arda Kotikian +6 more
semanticscholar +1 more source
Journal of Marine Science and Engineering, 2020 The shipping industry is becoming increasingly aware of its environmental responsibilities in the long-term. In 2018, the International Maritime Organization (IMO) pledged to reduce greenhouse gas (GHG) emissions by at least 50% by the year 2050 as ...
Kyunghwa Kim +3 more
semanticscholar +1 more source
Light-switchable propulsion of active particles with reversible interactions [PDF]
Nature Communications, 2020 Active systems such as microorganisms and self-propelled particles show a plethora of collective phenomena, including swarming, clustering, and phase separation.
H. R. Vutukuri +3 more
semanticscholar +1 more source
Genetic algorithm-based multiple moving target reaching using a fleet of sailboats
IET Cyber-systems and Robotics, 2019 This study addresses the problem of Dynamic Travelling Salesman Problem for a multi-agent system using a fleet of sailboats. A genetic algorithm (GA) is proposed, which attributes to each agent a varying number of targets to be collected.
Viel Christophe +4 more
doaj +1 more source
A Two-Phase Mass Flow Rate Model for Nitrous Oxide Based on Void Fraction
Aerospace, 2022 In the field of space propulsion, self pressurized technology is an example of innovation capable of improving system performances through reduction of volumes and other optimizations.
Simone La Luna +4 more
doaj +1 more source
Mixing Enhancement Study in Axisymmetric Trapped-Vortex Combustor for Propane, Ammonia and Hydrogen
ModellingThe trapped-vortex combustor (TVC) is an alternative combustor design to conventional aeroengine combustors. The separate fuel and air injection of this combustor and its compact design make it a perfect candidate for conventional fuel usage.
Heval Serhat Uluk +2 more
doaj +1 more source
Influence of Handrim Wheelchair Propulsion Training in Adolescent Wheelchair Users
Frontiers in Bioengineering and Biotechnology, 2015 Ten full time adolescent wheelchair users (ages 13-18) completed a total of three propulsion trials on carpet and tile surfaces, at a self-selected velocity, and on a concrete surface, at a controlled velocity. All trials were performed in their personal
Jennifer L Dysterheft +2 more
doaj +1 more source
Review of Scientific Instruments, 2020 The transition from old space to new space along with increasing commercialization has a major impact on space flight, in general, and on electric propulsion (EP) by ion thrusters, in particular.
K. Holste +26 more
semanticscholar +1 more source
Analysis of Energy Utilization and Losses for Jet-Propelled Vehicles
Aerospace, 2021 The global control volume-based energy utilization balance for an aerospace vehicle is extended to allow for the analysis of jet-propelled vehicles.
Mohammad Abbas, David W. Riggins
doaj +1 more source
Molecular Oncology, EarlyView.In patients treated with atezolizumab as a part of the MyPathway (NCT02091141) trial, pre‐treatment ctDNA tumor fraction at high levels was associated with poor outcomes (radiographic response, progression‐free survival, and overall survival) but better sensitivity for blood tumor mutational burden (bTMB).
Charles Swanton +17 more
wiley +1 more source