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dc.contributor.authorMetzgar, Jonathan
dc.date.accessioned2021-01-20T23:21:43Z
dc.date.available2021-01-20T23:21:43Z
dc.date.issued2020-12-31
dc.identifier.urihttp://hdl.handle.net/11122/11848
dc.description.abstractPrevious research efforts at UAF have established that dust palliative performance may be compared using a calculation called the mean particle residence time (tau, or MPRT). The MPRT value is computed using linear regression techniques to determine the time when the dust palliative loses its effectiveness. A technician tests the palliative using a dustfall column and a nephelometer to measure the concentration of PM10 over time. The technician needs to manually process this raw data with an Excel spreadsheet making dust palliative MPRT reports time-consuming and prone to error. Finally, the certifying technician prints and files the report for future reference which limits future dissemination. We developed a web-based calculator, called UAFDUST, to automate the process of producing the MPRT report. UAFDUST combines a web app front end using Google's Angular library with a PHP and SQL database backend. This database enables a laboratory to record metadata about the dust palliative including the dustfall column testing date and technician, certification date, and certifying technician. The app calculates the MPRT and produces accompanying linear regression plots. The UAFDUST app stores dust palliative MPRT tests in a public database and trained laboratory technicians may contribute new data.en_US
dc.language.isoen_USen_US
dc.subjectdust controlen_US
dc.subjectrural transportationen_US
dc.subjectStatistical Analysisen_US
dc.subjectair qualityen_US
dc.subjectdirt roaden_US
dc.titleDUST PALLIATIVE MEAN PARTICLE RESIDENCE TIME CALCULATORen_US
dc.typeTechnical Reporten_US
refterms.dateFOA2021-01-20T23:21:45Z


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