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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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Temporal Changes in Allocation and Partitioning of New Carbon as 11C Elicited by Simulated Herbivory Suggest that Roots Shape Aboveground Responses in Arabidopsis
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Shared Genetic Control of Root System Architecture between Zea mays and Sorghum bicolor
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Integration of genetic, genomic and transcriptomic information identifies putative regulators of adventitious root formation in Populus
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Comparison of Methods for Mapping Rhizosphere Processes in the Context of Their Surrounding Root and Soil Environments
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Changes in the distribution of plastids and endoplasmic reticulum during cellular differentiation in root caps of Zea mays
In calyptrogen cells of Zea mays, proplastids are distributed randomly throughout the cell, and the endoplasmic reticulum (ER) is distributed parallel to the cell walls. The differentiation of calyptrogen cells into columella statocytes is characterized by the following sequential events: (1) formation of ER complexes at the distal and proximal ends of the cell, (2) differentiation of proplastids into amyloplasts, (3) sedimentation of amyloplasts onto the distal ER complex, (4) breakdown of the distal ER complex and sedimentation of amyloplasts to the bottom of the cell, and (5) formation of sheets of ER parallel to the longitudinal cell walls. Columella statocytes located in the centre of the cap each possess 4530 +/- 780 micrometers2 of ER surface area, an increase of 670 per cent over that of calyptrogen cells. The differentiation of peripheral cells correlates positively with (1) the ER becoming arranged in concentric sheets, (2) amyloplasts and ER becoming randomly distributed, and (3) a 280 per cent increase in ER surface area over that of columella statocytes. These results are discussed relative to graviperception and mucilage secretion, which are functions of columella and peripheral cells, respectively.
The Search for Our Cosmic Roots
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The Search for Our Cosmic Roots and...Galactic Cousins
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A Continuous Square Root Information Filter-Smoother with Discrete Data Update
Data filters may be separated into two categories being continuous filters or discrete filters. Continuous data filters are described by a matrix differential equation or Ricatti equation and discrete filters are obtained by solving the continuous equations over some finite time interval.
Root cause analysis
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Origins: in search of our cosmic roots
You are holding a strategic roadmap for the first two decades into the new millennium, chartered by NASA's Office of Space Science to travel toward understanding and explaining the origins of galaxies, stars, planetary systems, and life.
Introduction to Root (1/2)
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Introduction to ROOT
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Optical Tomography for 3D Imaging of Fine Roots: Final Scientific Technical Report
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