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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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With growing populations and pressing environmental problems, future economies will be increasingly plant-based. Now is the time to reimagine plant science as a critical component of fundamental science, agriculture, environmental stewardship, energy, technology and healthcare. This effort requires a conceptual and technological framework to identify and map all cell types, and to comprehensively annotate the localization and organization of molecules at cellular and tissue levels. This framework, called the Plant Cell Atlas (PCA), will be critical for understanding and engineering plant development, physiology and environmental responses. A workshop was convened to discuss the purpose and utility of such an initiative, resulting in a roadmap that acknowledges the current knowledge gaps and technical challenges, and underscores how the PCA initiative can help to overcome them.
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Short term storage of visual information and property of memory read-out
Visual requirements of space missions, discussing navigation, rendezvous and docking, lunar landing and lunar exploration
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Design and operating characteristics of electro-optical instrument for tracking of retinal blood vessels in back of eye
Satellite programs based on use of remote sensors operating throughout electromagnetic spectrum for exploring and detecting earth surface phenomena
Retinal images and accomodation control mechanism under conditions of space flight stress
Effects of landing site redesignation on visibility during manned lunar landing
Space Flight Simulator duplicates visual conditions encountered during manned landing on lunar surface
Retinal adaptation to prism-displaced hand image in terms of sensorimotor coordination central control change
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Device can reproduce virtually all binocular stimulus conditions (target configuration, vergence angle, and accommodative distance) used to test binocular performance. All subsystems of electronic controls are open-loop and solid-state-controlled and, with the exception of vergence angle drive, utilize dc stepping motors as prime movers. Arrangement is also made for readouts of each variable.
The three color receptors of Young-Helmholtz and the opponent colors type of information processing postulated by Hering are both present in the human visual system. This mixture accounts for both the phenomena of color matching or hue discrimination and such perceptual qualities of color as the division of the spectrum into color bands. The functioning of the cells in the visual system, especially within the retina, and the relation of this function to color perception are discussed.