Publications by authors named "J M Kirk"
Purpose: The evidence supports early and intensive mobilization and physical activity for patients who are hospitalized following hip fracture. The objectives were to determine levels of physical activity among patients hospitalized following hip fracture surgery, and to explore the association between levels of physical activity and 30-day post-discharge readmission, and mortality.
Materials And Methods: We collected data at two university hospitals in Denmark from March-June 2023.
Arctic rivers may be the largest net sources of mercury (Hg) to the Arctic Ocean, yet riverine sources of Hg remain poorly characterized compared to atmospheric processes. This article reviews the current state of knowledge on Hg inputs to the Mackenzie River and Valley in Northern Canada from six point and non-point sources. Point sources include the locations of mines, fossil fuel extraction facilities, and retrogressive permafrost thaw slumps.
View Article and Find Full Text PDFBackground: Timely recognition of acute ischemic stroke (AIS) is essential to identify patients who may be eligible for acute intervention. Protocols to streamline systems-based care, such as "stroke alerts" in the emergency department (ED) can safely reduce time-to-care while enhancing safety. However, clinician adherence to stroke alert criteria is poorly described.
View Article and Find Full Text PDFHigh-energy nuclear collisions create a quark-gluon plasma, whose initial condition and subsequent expansion vary from event to event, impacting the distribution of the eventwise average transverse momentum [P([p_{T}])]. Disentangling the contributions from fluctuations in the nuclear overlap size (geometrical component) and other sources at a fixed size (intrinsic component) remains a challenge. This problem is addressed by measuring the mean, variance, and skewness of P([p_{T}]) in ^{208}Pb+^{208}Pb and ^{129}Xe+^{129}Xe collisions at sqrt[s_{NN}]=5.
View Article and Find Full Text PDFArticle Synopsis
- Dry deposition plays a significant role in removing reactive organic carbon from the atmosphere, impacting airborne chemical reactions and transferring this carbon to other environmental systems.
- Using aircraft measurements, researchers found that oil operations can lead to high deposition rates of organic carbon, reaching up to 100 tons per hour, with rapid lifetimes of about 4 hours that can compete with oxidation processes.
- Traditional models for gas-phase deposition may not capture all deposited organic carbon, indicating a need to consider these deposition processes in assessing the effects on freshwater ecosystems, as they contribute significantly to the overall carbon balance compared to terrestrial sources.