Results 161 to 170 of about 14,352,968 (262)

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

open access: yesAdvanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz   +5 more
wiley   +1 more source

An investigation into the relationship between physical activity motivation, flow, physical self-concept and activity levels in adolescence

open access: yes, 2004
Physical inactivity and sedentary behaviours are critical health issues. Motivation is a key construct in the initiation and continuation of physical activity and it is during the period of adolescence that habits relating to physical activity are formed.
Richards, Garry E.   +4 more
core  

Biodegradable and Edible Milli‐Fluidic Logic Circuits

open access: yesAdvanced Materials Technologies, EarlyView.
Fully biodegradable and edible fluidic circuits are developed using gelatin‐based valves that operate at low pressure. Logic gates, a one‐bit memory, and a ring oscillator are demonstrated, showing that biodegradable materials can perform computation and control.
Shuhang Zhang   +3 more
wiley   +1 more source

Children’s self-concept and participation in extra-curricular sport activities

open access: yes, 2004
Multidimensional self-concept measurements have provided a vehicle for a comprehensive investigation of the relationship between participation in sport and the range of self-concept in children. The purpose of this study was to examine the differences in
Hawkins, Ken   +2 more
core  

Extrusion‐Based Bioprinting of Living Bioinks for Tissue and Organ Engineering

open access: yesAdvanced Materials Technologies, EarlyView.
Extrusion‐based bioprinting is presented as the most versatile route for fabricating living, heterogeneous tissues. Its ability to combine diverse bioinks, support matrices, and advanced printhead geometries transforms familiar constraints into powerful biofabrication opportunities.
Eric Silberman   +4 more
wiley   +1 more source

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