Publications by authors named "G S Barr"

Article Synopsis
  • Serum IgG deficiency is linked to increased risks of exacerbations in chronic obstructive pulmonary disease (COPD), but the impact of lower normal range levels is uncertain.
  • A study involving 1,497 smokers analyzed the relationship between serum IgG levels and COPD exacerbations, finding that levels below the 35th percentile (1225 mg/dL) heightened exacerbation risk.
  • Specifically, low levels of IgG1 and IgG2 subclasses were significantly correlated with severe exacerbations, indicating that even mild impairments in IgG can affect disease severity in at-risk individuals.
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Aims: Opioid use disorder (OUD) remains a serious public health problem. Opioid maintenance treatment is effective but under-utilized, hard to access under existing federal regulations, and, once patients achieve OUD stability, challenging to discontinue. Fewer than 2% of persons with OUD stop using opioids completely.

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We report the first double-differential neutrino-argon cross section measurement made simultaneously for final states with and without protons for the inclusive muon neutrino charged-current interaction channel. The proton kinematics of this channel are further explored with a differential cross section measurement as a function of the leading proton's kinetic energy that extends across the detection threshold. These measurements use data collected with the MicroBooNE detector from 6.

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Article Synopsis
  • The study analyzed 5804 days of Super-Kamiokande data from 1996 to 2018 to detect variations in solar ^{8}B neutrino flux.
  • The researchers utilized a five-day interval measurement approach and employed maximum likelihood and Lomb-Scargle methods to find any periodic modulations.
  • They found a significant modulation related to Earth's elliptical orbit around the Sun, with measurements of eccentricity and perihelion shift aligning with astronomical data.
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We present a first search for dark-trident scattering in a neutrino beam using a dataset corresponding to 7.2×10^{20} protons on target taken with the MicroBooNE detector at Fermilab. Proton interactions in the neutrino target at the main injector produce π^{0} and η mesons, which could decay into dark-matter (DM) particles mediated via a dark photon A^{'}.

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