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      <image:caption>PhD Candidate Energy, Environmental, and Chemical Engineering B.S. Chemical Engineering '96, University of Arkansas M.S. Chemical Engineering '99, University of Arkansas E. coxford@wustl.edu After obtaining his Masters degree, Chris entered industry where he spent nearly 11 years in various engineering and supervisory roles. He resigned after those 11 years to entertain his dream of a PhD and a professorship. In 2011-2012, Chris taught Chemical Engineering classes as an adjunct professor confirming his path. The ACT laboratory welcomed Chris following the 2012-2013 academic cycle. His academic interests include transport phenomena and thermodynamics while his passions outside academia are spent as an avid cyclist and father.</image:caption>
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    <image:image>
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      <image:caption>Teflon Filter (PALL) - designed to efficiently collect particles with low pressure drop</image:caption>
    </image:image>
    <image:image>
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      <image:caption>Dust Mask non-N95 (Amazon) - not many particles removed. Approximately 1 out of every 28 particles captured.</image:caption>
    </image:image>
    <image:image>
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      <image:title>Research</image:title>
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      <image:caption>Double Layer Coffee Filter</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585755984857-97XH7IFDAPYOLYYWMSL9/HEPA%2Blarge.jpg</image:loc>
      <image:title>Research</image:title>
      <image:caption>HEPA Filter (PALL) - designed to remove all particles with low pressure drop</image:caption>
    </image:image>
    <image:image>
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      <image:caption>Photo by Ben Sumlin</image:caption>
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    <image:image>
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      <image:caption>Bandana (cotton). Approximately 1 out of every 16 particles captured.</image:caption>
    </image:image>
    <image:image>
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    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585763047833-O3TN4ZWMNIUNSMIXRW4W/resultmaskinsert.png</image:loc>
      <image:title>Research</image:title>
      <image:caption>Mask Insert (purchased through Amazon order) - Approximately 1 out of every 3 particles captured.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585969891528-6D6MVMV7H1NQFL487LKF/hospitalgown.jpg</image:loc>
      <image:title>Research</image:title>
      <image:caption>Hospital Fabric - disposable shorts</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585762714868-DHRY8FBCMCZHLS5FIQJB/resultCoffeefilter.png</image:loc>
      <image:title>Research</image:title>
      <image:caption>Coffee Filter - not many particles removed, extremely variable between tests. Approximately 1 out of every 14 particles captured.</image:caption>
    </image:image>
    <image:image>
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    <image:image>
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      <image:title>Research</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585756819383-JOS7TCMJ6PFV3WACZ205/PM25insert.jpg</image:loc>
      <image:title>Research</image:title>
      <image:caption>Mask Insert (purchased through Amazon order)</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585757320667-NB7NV2CSEFMTIZATBQ0O/facewipe2+large.jpg</image:loc>
      <image:title>Research</image:title>
      <image:caption>Face Wipe (dried)</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585762924085-ZAZ9P8R5SVRXDKMHIH0F/resultFacewipe.png</image:loc>
      <image:title>Research</image:title>
      <image:caption>Face Wipe (dried) - very few particles removed. Approximately 1 out of every 43 particles captured.</image:caption>
    </image:image>
    <image:image>
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      <image:title>Research</image:title>
    </image:image>
    <image:image>
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      <image:title>Research</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1512366799429-WCYVY8YQ6XSVTRQEUL0T/Screen+Shot+2017-12-03+at+11.48.18+PM.png</image:loc>
      <image:title>Research</image:title>
    </image:image>
    <image:image>
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      <image:title>Research</image:title>
      <image:caption>Double Layer Coffee Filter</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585970825655-Q2UBC9ZSUSE38ML33I1V/tshirt2.png</image:loc>
      <image:title>Research</image:title>
      <image:caption>T-Shirt (cotton) - even big drops (from sneezing/coughing) can get through these holes!</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585969854297-N4XIPEN1DEWZ6RHUBYNF/hospitalgown.jpg</image:loc>
      <image:title>Research</image:title>
      <image:caption>Hospital Fabric - disposable shorts</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585970433918-QK3Z7CN5HV29GYQ6N290/doublehgf.jpg</image:loc>
      <image:title>Research</image:title>
      <image:caption>Hospital Fabric - disposable shorts (Double Layer) - Unlike coffee filters below, a double layer of this material does seem to significantly improve collection. A double layer of this material performed similar to the PM2.5 mask insert tested above. Too many layers however could cause high pressure drops and limit effectiveness. Approximately 1 out of every 4 particles captured.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585969989973-WA7A40F0LMEJEDGAQAH5/hospitalgown.png</image:loc>
      <image:title>Research</image:title>
      <image:caption>Hospital Fabric - disposable shorts (Double Layer)</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585756925030-4BG0DHIMNT69PZRGP9N6/coffefilter.jpg</image:loc>
      <image:title>Research</image:title>
      <image:caption>Coffee Filter</image:caption>
    </image:image>
    <image:image>
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      <image:title>Research</image:title>
      <image:caption>T-Shirt (cotton)</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1556159570663-3C9GFLSPVXJJEXP2H8GN/source+profile+data+figure.png</image:loc>
      <image:title>Research</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585756887625-RIUFHFJLVMR2D9ST4FN7/coffee+filter+large.jpg</image:loc>
      <image:title>Research</image:title>
      <image:caption>Coffee Filter</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585970805868-0XKBEMMNNNS41CQWGS6T/tshirtresults.png</image:loc>
      <image:title>Research</image:title>
      <image:caption>T-Shirt (cotton). Approximately 1 out of every 23 particles captured.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585969956163-70RZPUNWCXRKI9VZ5FSO/hospitalgown.jpg</image:loc>
      <image:title>Research</image:title>
      <image:caption>Hospital Fabric - disposable shorts (Double Layer)</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585757336300-XBHS2W0R3JFE5WLWFH6W/facemask.png</image:loc>
      <image:title>Research</image:title>
      <image:caption>Face Wipe (dried) - even big drops (from sneezing/coughing) can get through these holes!</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1556211473837-LDV9RC8B3CKJ75JJMHY9/cups.jpg</image:loc>
      <image:title>Research</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1556168014967-7WSVMNKCOX11QZKH0OI4/ACRONIM2.png</image:loc>
      <image:title>Research</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585762759727-WO4JYT27H9L742RIORFC/resultdoublecoffee.png</image:loc>
      <image:title>Research</image:title>
      <image:caption>Double Layer Coffee Filter - still not many particles removed, less variable between tests. Approximately 1 out of every 13 particles captured.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585762619946-6C9R3QQW9UYUPKA04R8Z/resultHEPA.png</image:loc>
      <image:title>Research</image:title>
      <image:caption>HEPA Filter (PALL) - almost all particles removed. Approximately 1 out of every 1 particles removed.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585877694304-ESQX0FLYE4JWMWDPUA0M/dustmask2.png</image:loc>
      <image:title>Research</image:title>
      <image:caption>Dust Mask non-N95 (purchased through Amazon order) - even big drops (from sneezing/coughing) can get through these holes!</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585762633765-SCI0QMBKNQDX3GJQUJ9E/resultTeflon.png</image:loc>
      <image:title>Research</image:title>
      <image:caption>Teflon Filter (PALL) - most particles removed. Approximately 1 out of every 1 particles captured.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585763139842-GLGVA3SJP9O0VSTMI4YN/PM25insert.jpg</image:loc>
      <image:title>Research</image:title>
      <image:caption>Mask Insert (purchased through Amazon order) - three separate layers</image:caption>
    </image:image>
    <image:image>
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      <image:title>Research</image:title>
      <image:caption>Dust Mask - non-N95 (purchased through Amazon order)</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585755951223-9FYZC9G6TQ2LGKX21V6U/HEPA%2Blarge.jpg</image:loc>
      <image:title>Research</image:title>
      <image:caption>HEPA Filter (PALL)</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/59ff30239f8dce78a898280d/1585877663385-P9N3YYC838WCVHXCB18C/teflon2.png</image:loc>
      <image:title>Research</image:title>
      <image:caption>Teflon Filter (PALL)</image:caption>
    </image:image>
    <image:image>
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      <image:title>Research</image:title>
      <image:caption>Bandana (cotton) - even big drops (from sneezing/coughing) can get through these holes!</image:caption>
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      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
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      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
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