Results 121 to 130 of about 12,411 (357)

Integration Testing of a Modular Discharge Supply for NASA's High Voltage Hall Accelerator Thruster [PDF]

open access: yes
NASA s In-Space Propulsion Technology Program is developing a high performance Hall thruster that can fulfill the needs of future Discovery-class missions.
Drummond, Geoff   +2 more
core   +1 more source

Mechanochromic Organic Materials: Molecular Mechanisms and Multidimensional Applications

open access: yesAdvanced Physics Research, EarlyView.
Mechanochromic (MC) organic materials change color in response to mechanical force. This review elucidates the molecular mechanisms (e.g., aggregation‐induced emission, AIE) and explores their multidimensional applications in sensors, anti‐counterfeiting, biomedical devices, and structural health monitoring, providing a roadmap for future smart ...
Xiaozhe Yin   +5 more
wiley   +1 more source

High power Hall thrusters [PDF]

open access: yes35th Joint Propulsion Conference and Exhibit, 1999
Robert Jankovsky   +2 more
openaire   +1 more source

Performance Test Results of the NASA-457M v2 Hall Thruster [PDF]

open access: yes
Performance testing of a second generation, 50 kW-class Hall thruster labeled NASA-457M v2 was conducted at the NASA Glenn Research Center. This NASA-designed thruster is an excellent candidate for a solar electric propulsion system that supports human ...
Brophy J.R.   +11 more
core   +2 more sources

Synapsids and sensitivity: Broad survey of tetrapod trigeminal canal morphology supports an evolutionary trend of increasing facial tactile specialization in the mammal lineage

open access: yesThe Anatomical Record, EarlyView.
Abstract The trigeminus nerve (cranial nerve V) is a large and significant conduit of sensory information from the face to the brain, with its three branches extending over the head to innervate a wide variety of integumentary sensory receptors, primarily tactile.
Juri A. Miyamae   +4 more
wiley   +1 more source

MPD thruster technology [PDF]

open access: yes
MPD (MagnetoPlasmaDynamic) thrusters demonstrated between 2000 and 7000 seconds specific impulse at efficiencies approaching 40 percent, and were operated continuously at power levels over 500 kW.
Lapointe, Michael R.   +2 more
core   +4 more sources

Hall Thruster.

open access: yesJournal of the Japan Society for Aeronautical and Space Sciences, 1998
Yoshihiro ARAKAWA   +2 more
openaire   +2 more sources

アノードレイヤ型ホールスラスタの作動特性 [PDF]

open access: yes
Thrust performance and stable operation conditions of an anode layer type Hall thruster was investigated using a 1.5kW class anode layer type Hall thruster.
Arakawa, Yoshihiro   +7 more
core  

Description of the skull, braincase, and dentition of Moschognathus whaitsi (Dinocephalia, Tapinocephalia), and its palaeobiological and behavioral implications

open access: yesThe Anatomical Record, EarlyView.
Abstract A subadult Moschognathus whaitsi from the Eastern Cape Province, South Africa, was scanned using synchrotron radiation X‐ray computed tomography (SRXCT). Its subadult state allowed the cranial bones and teeth to be identified and individually reconstructed in 3D.
Tristen Lafferty   +3 more
wiley   +1 more source

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