• Organization: National Institute of Standards and Technology
• Updated: 2020-06-03 00:00:00

This dataset contains measurements of organic carbon, elemental carbon, and total carbon in atmospheric particulate matter with the thermal-optical carbon analyzer. The data are associated with...

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• Organization: National Institute of Standards and Technology
• Updated: 2022-11-09 00:00:00

Recent advances in methodology have made phosphopeptide analysis a tractable problem for many proteomicists. There are now a wide variety of robust and inexpensive enrichment strategies to...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2017-08-25

Atmospheric oxidation of sesquiterpenes has been of considerable interest recently because of their likely contribution to ambient organic aerosol, but farnesene oxidation has been reported in...

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• Organization: National Institute of Standards and Technology
• Updated: 2022-03-05 00:00:00

Source code associated with the Inverted Library Search Algorithm (ILSA) for identifying mixture components using is-CID mass spectra. This source code is frozen to accompany the manuscript titled...

• Organization: U.S. Environmental Protection Agency
• Updated: 2022-06-27

Anthropogenic activities introduce complex mixtures into aquatic environments, necessitating the evaluation of mixture toxicity during ecological risk assessments. There are many new approach...

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• Organization: Department of the Interior
• Updated: 2020-08-27T00:00:00Z

These data were compiled to compare the ability of matched filtering (MF) and linear spectral mixture analysis (LSMA) to map isolated wetland sites using Landsat 5 Thematic Mapper (TM) and Landsat...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2024-02-29T00:00:00.000+00:00

The purpose of this study was to genetically analyze axillary process samples from ~6,000 sockeye salmon harvested in the 2006 and 2007 Districts 101 gillnet and 104 purse seine sockeye fisheries...

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• Organization: Department of the Interior
• Updated: 2024-08-07T00:00:00Z

This data release presents chemical and biological results from an investigation of the uptake of per- and polyfluoroalkyl substances (PFAS) from groundwater contaminated by fire training...

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• Organization: National Institute of Standards and Technology
• Updated: 2015-07-21 00:00:00

This Standard Reference Material (SRM) is a primary gas mixture for which the amount-of-substance fraction, expressed as concentration, may be related to secondary working standards. This SRM is...

• Organization: Department of the Interior
• Updated: 2024-05-03T00:00:00Z

This data release contains elemental concentration data from the reanalysis of 13,930 archived stream-sediment sample and associated stream sediment reference material and 968 archived rock...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2019-12-12

The eastern oyster (Crassostrea virginica) supports a large aquaculture industry and is a keystone species along the Atlantic seaboard. Native oysters are routinely exposed to a complex mixture of...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1998-12-01T00:00:00.000+00:00

Electrophoretic analysis of Asian even brood-year pink salmon stocks has shown regional heterogeneity (Noll et al. in review). Hypothetical mixed fisheries were created using data from 24...

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• Organization: Department of the Interior
• Updated: 2023-01-06T00:00:00Z

This data set contains individual adult bighorn sheep entry and exit/censor times for 3 disease states and 2 mortality states: susceptible, infected and recovered and disease-caused death and...

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• Organization: National Institute of Standards and Technology
• Updated: 2023-03-24 00:00:00

This data publication contains the mass spectrometry chemical characterization of microplastic and nanoplastic chemical analysis. The data from this study includes mass spectra of pure, mixed, and...

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• Organization: Department of the Interior
• Updated: 2020-11-25T00:00:00Z

An implementation of Quantitative Fatty Acid Signature Analysis (QFASA) in R. QFASA is a method of estimating the diet composition of predators. The fundamental unit of information in QFASA is a...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2023-01-20

Proportional response addition (Prop-RA), a model for predicting response from chemical mixture exposure, is demonstrated, and evaluated by statistically evaluating data on all possible binary...

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• Organization: National Institute of Standards and Technology
• Updated: 2019-04-19

pyMCR is an open-source software library for performing multivariate curve resolution (MCR) analysis with an alternating regression scheme (MCR-AR). MCR is a chemometric method for elucidating...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-03-31

SPATIALLY ADAPTIVE SEMI-SUPERVISED LEARNING WITH GAUSSIAN PROCESSES FOR HYPERSPECTRAL DATA ANALYSIS GOO JUN * AND JOYDEEP GHOSH* Abstract. A semi-supervised learning algorithm for the...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2016-01-30

Dataset presents concentrations of organic pollutants, such as polyaromatic hydrocarbon compounds, in water samples. Water samples of known volume and concentration were allowed to equilibrate...

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• Organization: National Institute of Standards and Technology
• Updated: 2015-07-17 00:00:00

Standard Reference Material-1721: Southern Oceanic Air. Ambient Nominal Amount of Substance Fraction for Carbon Dioxide, Methane & Nitrous Oxide. This Standard Reference Material (SRM) is a...