Publications by authors named "B K Washburn"

The great horned owl (Bubo virginianus) is a generalist predator that inhabits wide-ranging territories that are relatively stable throughout the year. These owls are also involved in a variety of human-owl conflicts, including killing of domestic poultry, predating colonially nesting seabirds and shorebirds, and pose a hazard to safe aircraft operations. Managing these conflict situations presents unique challenges as great horned owls are nocturnally active and occupy a wide range of habitats.

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Soybean agglutinin (SBA) was purified using ammonium sulfate precipitation and liquid chromatography. Purified SBA was used to produce monoclonal antibodies through hybridoma technology. SBA secondary structure was studied using circular dichroism.

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Article Synopsis
  • The study introduces an open-path mid-infrared dual-comb spectroscopy (DCS) system for accurately measuring stable water isotopologues (HO and HDO) over 3.75 months at a rural location.
  • The DCS system maintained 60% uptime and demonstrated a precision of less than 2‰ when comparing its measurements to the National Ecological Observatory Network (NEON) data.
  • The findings reveal consistent diurnal and seasonal patterns between DCS and NEON, highlighting the potential for denser monitoring networks to enhance understanding of water transport dynamics in the environment.
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Operation of any dual-comb spectrometer requires digitization of the interference signal before further processing. Nonlinearities in the analog-to-digital conversion can alter the apparent gas concentration by multiple percent, limiting both precision and accuracy of this technique. This work describes both the measurement of digitizer nonlinearity and the development of a model that quantitatively describes observed concentration bias over a range of conditions.

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