Results 101 to 110 of about 622,542 (248)

Advanced expander test bed engine [PDF]

open access: yes, 1992
The Advanced Expander Test Bed (AETB) is a key element in NASA's Space Chemical Engine Technology Program for development and demonstration of expander cycle oxygen/hydrogen engine and advanced component technologies applicable to space engines as well ...
Mitchell, J. P.
core  

Spatial Stiffness Programming in Single‐Filament Material Extrusion Through Data‐Driven Thermal Foaming

open access: yesAdvanced Materials Technologies, EarlyView.
Single‐filament material extrusion enables spatial stiffness programming through locally controlled thermal foaming of TPU. A data‐driven G‐code framework tunes porosity from 15.7% to 40.7% and hardness from 90 to 63 Shore A within and across layers. Monolithic hands and soft actuators consequently achieve distinct programmed motions without material ...
Rosanna Rifino   +3 more
wiley   +1 more source

Angled Nozzle Aerosol Jet Printing to Streamline Conformal Patterning of Electronics

open access: yesAdvanced Materials Technologies, EarlyView.
A modular, angled aerosol jet printhead is demonstrated to streamline patterning on nonplanar surfaces, including 90° step edges and confined internal geometries. A detailed analysis of gravitational settling for a sheathed aerosol flow and deconvolution of oblique deposition and gravitational effects supports the versatility of this approach for ...
Louis O. Morgan   +4 more
wiley   +1 more source

An All‐Fabric Wearable System for Human‐Machine Interaction

open access: yesAdvanced Materials Technologies, EarlyView.
An all‐fabric sensing system enables wearable human–machine interaction through a breathable, stretchable, and scalable design. The all‐fabric capacitive sensor achieves a gauge factor of 2.03 over 72% strain and supports body‐motion tracking, 90.5% hand gesture recognition, and real‐time prosthetic hand control, demonstrating a promising pathway ...
Rayane Tchantchane   +3 more
wiley   +1 more source

The Leaf Expander® : an alternative to the conventional expander in transverse maxillary expansion ?

open access: yes
L’endognathie maxillaire est une anomalie squelettique du maxillaire dans la dimension transversale, caractérisée par un déficit. Plusieurs étiologies de cette malocclusion ont été décrites telles que des facteurs génétiques, fonctionnels, mais aussi environnementaux, pathologiques et hormonaux.
openaire   +1 more source

Flue Expander

open access: yes, 1905
Patent for a flue expander.
Rall, Frederick A., Faessler, John W.
core  

Asymmetry in Skipping Enhances Viability Against Control Input Noise

open access: yesAdvanced Robotics Research, EarlyView.
Quadruped animals use asymmetric galloping gaits at high speeds, yet the functional role of this asymmetry remains unclear. This study shows that left–right asymmetry in touchdown angles enhances robustness to control noise. Using a simple two‐legged locomotion model and viability theory, it demonstrates that asymmetric skipping substantially enlarges ...
Yuichi Ambe, Alvin So, Shinya Aoi
wiley   +1 more source

Ralph & Olive Leaf Folder

open access: yes, 1976
23 pages of family history documents containing and related to Ralph Leaf; Olive Leaf - including: Oral History of Ralph Leaf; Star News article; Lake Fork Merc; Long Valley Advocate article; Star News ...
Ralph Leaf; Olive Leaf
core  

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