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There are a total of 41 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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The first plants to fly on Shuttle
Author(s): Brown, A. H.; Chapman, D. K.
Abstract: The methods and results are presented concerning experiments using the first plants to make a journey for scientific purposes in earth orbit on board Space Shuttles 2 and 3. These experiments were conducted in order to ...
NASA Center: NASA (non Center Specific) Publication Year: 1982
Added to NTRS: 2004-11-03
Accession Number: 83A27778; Document ID: 19830046560
Residual nutational activity of the sunflower hypocotyl in simulated weightlessness
Author(s): Chapman, D. K.; Brown, A. H.
Abstract: The gravity dependence of circumnutational activity in the sunflower hypocotyl is investigated under conditions of simulated weightlessness. Seedling cultures of the sunflower Helianthus annuus were placed four days after ...
NASA Center: NASA (non Center Specific) Publication Year: 1979
Added to NTRS: 2004-11-03
Accession Number: 80A21984; Document ID: 19800037814
Effects of increased G-force on the nutations of sunflower seedlings
Author(s): Brown, A. H.; Chapman, D. K.; Dahl, A. O.
Abstract: A centrifuge was used to provide chronic acceleration in order to study the nutation of six-day old sunflower hypocotyls at 1 to 20 times normal gravity (g). At the upper end of the g-range nutational movement was impeded ...
NASA Center: NASA (non Center Specific) Publication Year: 1975
Added to NTRS: 2004-11-03
Accession Number: 75N18874; Document ID: 19750010802; Report Number: NASA-CR-142184, NUTFOG-1
Nutations of sunflower seedlings on tilted clinostats
Author(s): Brown, A. H.; Chapman, D. K.
Abstract: The kinetics of hypocotyl nutations in Helianthus annuus L. were measured on plants which were rotated on clinostats with axes of rotation inclined at various angles, alpha, away from the vertical. The g-force component ...
NASA Center: NASA (non Center Specific) Publication Year: 1977
Added to NTRS: 2004-11-03
Accession Number: 78A15209; Document ID: 19780031300
Limitation on the use of the horizontal clinostat as a gravity compensator
Author(s): Brown, A. H.; Dahl, A. O.; Chapman, D. K.
Abstract: If the horizontal clinostat effectively compensates for the influence of the gravity vector on the rotating plant, it should make the plant unresponsive to whatever chronic acceleration may be applied transverse to the axis ...
NASA Center: NASA (non Center Specific) Publication Year: 1976
Added to NTRS: 2004-11-03
Accession Number: 77A16663; Document ID: 19770033811
Research on gravitational physiology
Author(s): Brown, A. H.; Dahl, A. O.
Abstract: No Abstract Available
NASA Center: NASA (non Center Specific) Publication Year: 1975
Added to NTRS: 2004-11-03
Accession Number: 75N72893; Document ID: 19750066645; Report Number: NASA-CR-142326
Circumnutation observed without a significant gravitational force in spaceflight
Author(s): Brown, A. H.; Chapman, D. K.
Abstract: For over half a century and especially since the 1960's a number of plant physiologists, seeking to explain the impressively ubiquitous mechanism that drives and regulates circumnutation in all growing plant organs, have ...
NASA Center: NASA (non Center Specific) Publication Year: 1984
Added to NTRS: 2004-11-03
Accession Number: 84A40310; Document ID: 19840057523
Research on gravitational physiology
Author(s): Brown, A. H.
Abstract: No Abstract Available
NASA Center: NASA (non Center Specific) Publication Year: 1975
Added to NTRS: 2004-11-03
Accession Number: 75N76341; Document ID: 19750070093; Report Number: NASA-CR-143529
Serendipitous solution to the problem of culturing Arabidopsis plants in sealed containers for spaceflights of long duration
Author(s): Brown, A. H.; Odowd, P.; Loercher, L.; Kuniewicz, R.; Dahl, A. O.
Abstract: The Arabidopsis thaliana plant species is tested to determine how a higher plant will develop from seed to maturity when deprived of all gravitational information that it might use to control its growth. Experimental results ...
NASA Center: NASA (non Center Specific) Publication Year: 1979
Added to NTRS: 2004-11-03
Accession Number: 79A41704; Document ID: 19790057691
Importance of gravity for plant growth and behavior
Author(s): Brown, A. H.
Abstract: Flight experiments on the importance of gravity to plant growth and behavior are reported. The following studies were undertaken: (1) hyperastic responses to incremental changes of an axially imposed centripetal force; (2) ...
NASA Center: NASA (non Center Specific) Publication Year: 1985
Added to NTRS: 2004-11-03
Accession Number: 85N26070; Document ID: 19850017759
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