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  "doi": "doi:10.18434/mds2-2476",
  "title": "Automated particle analysis (SEM/EDS) data from samples known to have been exposed to gunshot residue and from samples occasionally mistaken for gunshot residue - like brake dust and fireworks.",
  "contactPoint": {
    "fn": "Nicholas Ritchie",
    "hasEmail": "mailto:nicholas.ritchie@nist.gov"
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  "modified": "2021-09-29 00:00:00",
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  "landingPage": "https://data.nist.gov/od/id/mds2-2476",
  "description": [
    "Automated particle analysis (SEM/EDS) data from samples known to have been exposed to gunshot residue and from samples occasionally mistaken for gunshot residue - like brake dust and fireworks.",
    "The dataset consists of analyses of 30 discrete samples: 12 from sampling automobiles (\"brake dust\"), 10 from sampling fireworks (\"sparklers\" and \"spinners\" and \"roman candles\"), 8 from shooter's left or right hands.",
    "The analysis configuration meta-data for each analysis are contained in the \"configuration.txt\" and \"script.py\" files.  The raw data from each analysis is in the file pair \"data.pxz\" and \"data.hdz\".  The HDZ-file details the contents of the PXZ-file.  In addition, the \"mag0\" directory contains TIFF images with embedded X-ray spectra for each particle in the dataset.",
    "Additional HDZ/PXZ files contain the results of reprocessing the \"data.hdz/.pxz\" in light of the \"mag0\" spectra and the standard spectra in \"25 keV.zip\"",
    "The samples came from Amy Reynolds (amy.reynolds@pd.boston.gov) at the Boston Police Department.  The \"Shooter\" samples were taken from a volunteer who fired a gun at a local firing range and was then sampled immediately after.  They are part of a time series that was used to study GSR retention.",
    "The TIFF Image/Spectrum files can be read using NIST DTSA-II (https://www.nist.gov/services-resources/software/nist-dtsa-ii) or NeXLSpectrum.jl (https://doi.org/10.18434/M32286).  The HDZ/PXZ files can be read using NIST Graf (available on request) or NeXLParticle.jl (https://github.com/usnistgov/NeXLParticle.jl)."
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    "scanning electron microscope",
    "energy dispersive x-ray spectrometry",
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    "automated particle analsyis",
    "APA"
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  "theme": [
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    "Materials: Materials characterization"
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  "license": "https://www.nist.gov/open/license",
  "publisher": {
    "name": "National Institute of Standards and Technology",
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