Publications by authors named "D A Harbour"

Writing systems display ubiquitous linguistic structure, from the recursive syntactic properties of their glyphs to the morphology/phonology of their combinatorics. This extends to Ancient Egyptian, Chinese, and Sumerian ideograms. Pure ideography requires switching this influence off.

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Objectives: Bronchiolitis is the most common cause for nonelective infant hospitalization in the United States with increasing utilization of high-flow nasal cannula (HFNC). We standardized initiation and weaning of HFNC for bronchiolitis and quantified the impact on outcomes. Our specific aim was to reduce hospital and ICU length of stay (LOS) by 10% between two bronchiolitis seasons after implementation.

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Article Synopsis
  • - The study evaluated how factors like cigar type and smoking habits influence nicotine dependence and exposure among current exclusive cigar smokers (N = 77).
  • - Results showed that cigar smokers generally had low dependence levels but experienced increased nicotine levels and reduced withdrawal symptoms, especially those who inhaled or smoked large cigars.
  • - The findings highlight that different cigar types and inhalation behaviors significantly impact nicotine exposure and dependence, indicating potential health risks associated with cigar smoking.
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Although phosphatidic acid (PA) regulates a wide variety of physiological processes, its targets remain poorly characterized in human neutrophils. By co-sedimentation with PA-containing vesicles we identified several PA-binding proteins including vesicle amine transport protein-1 (VAT-1), Annexin A3 (ANXA3), Rac2, Cdc42 and RhoG in neutrophil cytosol. Except for ANXA3, protein binding to PA-containing liposomes was calcium-independent.

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Polymorphonuclear neutrophil (PMN) stimulation with fMLP stimulates small G proteins such as ADP-ribosylation factors (Arfs) Arf1 and Arf6, leading to phospholipase D (PLD) activation and functions such as degranulation and the oxidative burst. However, the molecular links between fMLF receptors and PLD remain unclear. PMNs express cytohesin-1, an Arf-guanine exchange factor that activates Arfs, and its expression is strongly induced during the acquisition of the neutrophilic phenotype by neutrophil-like cells.

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