منابع مشابه
Magnetotail energy dissipation during an auroral substorm
Violent releases of space plasma energy from the Earth's magnetotail during substorms produce strong electric currents and bright aurora. But what modulates these currents and aurora and controls dissipation of the energy released in the ionosphere? Using data from the THEMIS fleet of satellites and ground-based imagers and magnetometers, we show that plasma energy dissipation is controlled by ...
متن کاملQuantitative Impact Testing of Energy Dissipation at Surfaces
Impact testing with nanoscale spatial, force, and temporal resolution has been developed to address quantitatively the response of surfaces to impingement of local contact at elevated velocities. Here, an impact is generated by imparting energy to a pendulum carrying an indenter, which then swings towards a specimen surface. The pendulum displacement as a function of time x(t) is recorded, from...
متن کاملMuscle power attenuation by tendon during energy dissipation.
An important function of skeletal muscle is deceleration via active muscle fascicle lengthening, which dissipates movement energy. The mechanical interplay between muscle contraction and tendon elasticity is critical when muscles produce energy. However, the role of tendon elasticity during muscular energy dissipation remains unknown. We tested the hypothesis that tendon elasticity functions as...
متن کاملSoil Estimation Based on Dissipation Energy during Autonomous Excavation
This paper describes a new algorithm for the estimation of soils into different types employing an energy-based approach. Greatly simplifying the modeling of the tool-soil interaction process, energy components occurring during a dig are computed from simple force and bucket displacement measurements. In particular, the dissipation energy can be estimated allowing a prediction of the dynamic fr...
متن کاملContributions of lower extremity joints to energy dissipation during landings.
PURPOSE The purpose of the study was to investigate changes in lower extremity joint energy absorption for different landing heights and landing techniques. METHODS Nine healthy, active male subjects volunteered to perform step-off landings from three different heights (0.32 m, 2.5 m(-s); 0.62 m, 3.5 m(-s); and 1.03 m, 4.5 m(-s)) using three different landing techniques (soft, SFL; normal, NM...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1964
ISSN: 0001-4966
DOI: 10.1121/1.1939232