Search Data.gov
Found 998 dataset(s) matching "mathematics".
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<p>ComBase includes a systematically formatted database of quantified microbial responses to the food environment with more than 65,000 records, and is used for:</p> <ul> <li>Informing the design...
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The Patuxent River estuary was investigated over a 25-hour tidal cycle from October 17-18, 1972, during the Patuxent River Cooperative Study (conducted by the University of Maryland). These data...
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These data were acquired from two native Mojave Desert species, Ambrosia dumosa and Larrea tridentata, from 3 sites (50 m x 50 m garden plots) distributed across the differing Mojave Desert...
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<p>Increase the number of STEM (Science, Technology, Engineering, Mathematics) summer academies from 32 in 2014 to 50 by 2018.</p>
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This effort involved intensive chronic toxicity testing of major ion salts (comprised of Na, K, Ca, Mg, Cl, SO4, HCO3/CO3) with the cladoceran, Ceriodaphnia dubia, a species known to be relatively...
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The Land Change Monitoring Assessment and Projection (LCMAP) raster dataset is a suite of five annual land surface change and five annual land cover (and land cover derivative) products. The...
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This dataset is a single orthoimage from a collection of GeoTIFF format natural color orthoimages covering the islands of Puerto Rico, Mona, Desecheo, Culebra, Vieques, and the US Virgin...
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This volume of PISA 2009 results looks at the progress countries have made in raising student performance and improving equity in the distribution of learning opportunities. Following an...
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This dataset tabulates randomized simulation results for amounts of copper in metric tons in 163 permissive tracts for undiscovered porphyry copper deposits. The data from the child item...
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High resolution orthorectified images combine the image characteristics of an aerial photograph with the geometric qualities of a map. An orthoimage is a uniform-scale image where corrections have...
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GIFplots Files containing GIF images of spectral plots: - GIFplots_splib07a.zip contains plots of measured spectra, including * plots showing the full wavelength range of the measured spectra,...
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We quantified the availability of breeding habitat of the endangered Hawaii Akepa (Loxops coccineus). The species is thought to nest excusively in natural cavities within mature ohia (Metrosideros...
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The dataset describes the spatial distribution of benthic habitats on the insular shelf south of St. Thomas and St. John, U.S. Virgin Islands. These benthic habitats include: (1) Coral Reef...
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Our data can be used by modeler to develop mathematical models to simulate and predict the fate and transport of the next-generation multifunctional carbon-based metal oxide nanohybrids in the...
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This dataset contains analyses and data products used in a marine biogeographic assessment of the main Hawaiian Islands. The Bureau of Ocean Energy Management (BOEM) regulates the leasing,...
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This dataset is a time series of mass variability averaged over all of the global ocean. It provides the non-steric or mass only sea level changes over time. The mass variability are derived from...
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The gridded data represent modeled, historical exposure of U.S. offshore, coastal, and international waters to tropical cyclone activity within the North Atlantic and Pacific Ocean basins...