571 research outputs found

    The Parthenon, January 30, 2015

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    The Parthenon, Marshall University’s student newspaper, is published by students Monday through Friday during the regular semester and weekly Thursday during the summer. The editorial staff is responsible for the news and the editorial content

    Investigating the significance of water associated with organic matter towards atmospheric Aerosol Liquid Water Content in Florida

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    Aerosol liquid water content (ALWC) is ubiquitous in the atmosphere and is influenced by relative humidity, as well as inorganic and organic aerosol concentrations and their composition. However, the contribution of organic versus inorganic aerosol towards ALWC is highly uncertain at present. While some studies report the negligible contribution of organic aerosol to the concentration of ALWC, others provide evidence for a contribution of organic aerosol similar to that of inorganic aerosol. Hence, the aim of this study is to determine the contribution of organic aerosol to the concentrations of ALWC under contrasting environmental conditions in Florida across different seasons. Organic and speciated inorganic concentrations of fine particulate matter (PM2.5) were provided by the Florida Department of Environmental Protection, and assessed through the U.S. Environmental Protection Agency Air Quality Database, at three sites during 2017-2022. Gaseous concentrations of ammonia and nitric acid were acquired from the EPA’s CASTNET network during the same period. Water associated with inorganic aerosol (Winorg) was calculated using the hyperdual version of ISORROPIAv2.1 aerosol thermodynamic equilibrium model. Concentrations of aerosol inorganic composition (Na+, NH4+, K+, SO42-, Mg2+, Ca2+, NO3- and Cl-), temperature, and RH as well as nitric acid and ammonia gaseous concentrations were input to calculate partitioned inorganic concentrations and ALWC as well as sensitivities of each of these concentrations to the sum of the aerosol and gaseous concentrations. The liquid water associated with organics (Worg) was calculated based on organic concentrations, meteorological data, and hygroscopicity assumptions based on the kappa-Kohler theory. The total ALWC was thus calculated as the sum of the liquid water associated with inorganic and organic aerosol constituents. These analyses will provide insight into the significance of organic matter towards ALWC in the atmosphere with implications for the accurate representation of ALWC in models

    Collective Thinking for Extension Practice: A Time and Place for World Café

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    World café (WC) is a structured methodology that provides an opportunity for collective thinking through open dialogue. The WC concept affords the opportunity for individuals to engage in the sharing of ideas and knowledge. Participants rotate through timed discussions on different themes with different groups of individuals, providing for an intermixing of ideas. Facilitators benefit from accessing dialogue output and ideas related to chosen topics of discussion as a result of collective input. Extension professionals should consider WC for increasing communication and generating shared knowledge. Our approach to WC was implemented at the 2016 National Health Outreach Conference

    The Parthenon, January 23, 2015

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    The Parthenon, Marshall University’s student newspaper, is published by students Monday through Friday during the regular semester and weekly Thursday during the summer. The editorial staff is responsible for the news and the editorial content

    The Parthenon, February 13, 2015

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    The Parthenon, Marshall University’s student newspaper, is published by students Monday through Friday during the regular semester and weekly Thursday during the summer. The editorial staff is responsible for the news and the editorial content

    The Parthenon, April 24, 2015

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    The Parthenon, Marshall University’s student newspaper, is published by students Monday through Friday during the regular semester and weekly Thursday during the summer. The editorial staff is responsible for the news and the editorial content

    The Parthenon, April 17, 2015

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    The Parthenon, Marshall University’s student newspaper, is published by students Monday through Friday during the regular semester and weekly Thursday during the summer. The editorial staff is responsible for the news and the editorial content
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