Dust storms in arid regions transport desert salts and dust, affecting geochemical processes, atmospheric chemistry, climate, and human health. This study examines how the gas-salt interface composition of desert salt changes with varying relative humidity (RH), using ambient pressure X-ray photoelectron spectroscopy (APXPS), near-edge X-ray absorption fine structure (NEXAFS) spectroscopy, and molecular dynamics (MD) simulations. Ion chromatography analysis of desert salt indicates it is predominantly composed of sulfate, sodium, and magnesium ions, with traces of calcium, chloride, nitrate, and potassium ions.
View Article and Find Full Text PDFSea spray aerosols (SSA) greatly affect the climate system by scattering solar radiation and acting as seeds for cloud droplet formation. The ecosystems in the Arctic Ocean are rapidly changing due to global warming, and the effects these changes have on the generation of SSA, and thereby clouds and fog formation in this region, are unknown. During the ship-based Arctic Century Expedition, we examined the dependency of forced SSA production on the biogeochemical characteristics of seawater using an on-board temperature-controlled aerosol generation chamber with a plunging jet system.
View Article and Find Full Text PDFPurpose: In recent years, C,anada has seen the development of new educational pathways to baccalaureate education for dental hygienists. Research has demonstrated that degree education strengthens dental hygienists' cognitive and practice abilities and increases career opportunities. However, the 2021 Canadian Dental Hygienists Association (CDHA) Job Market and Employment Survey reported that only 27% of respondents held a baccalaureate degree.
View Article and Find Full Text PDFBackground: Little is known about coinfections in patients with COVID-19, with antibiotics often initiated empirically.
Objectives: To determine the rates and characteristics of early and late coinfections in COVID-19 patients and to characterize the use of anti-infective agents, especially antibiotics.
Methods: This retrospective chart review involved patients with COVID-19 who were admitted to Lions Gate Hospital (Vancouver, British Columbia) between January 1 and June 30, 2020.
Objectives: Motivations and career outcomes of dental hygienists with baccalaureate degrees have been recently reported; however, few studies have explored Canadian dental hygienists pursuing graduate education. There is limited evidence to inform career outcomes and motivating factors for advanced education, limiting knowledge of how professional outcomes have evolved alongside advancements in graduate program offerings. This study focused on understanding motivating factors to pursue graduate education and the professional outcomes of dental hygienists with graduate degrees.
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