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Background: The term rapidly progressive dementia (RPD) may be applied to patients with precipitous declines in cognitive function resulting in dementia within one year or complete incapacitation within two-years of symptom onset. Although most patients present with subacute, progressive declines, selected patients develop complete incapacitation within seven days of symptom onset. The differential diagnosis and clinical characteristics of patients with abrupt-onset dementia are not known.
View Article and Find Full Text PDFSub-zero soil CO respiration in biostimulated hydrocarbon-contaminated cold-climate soil can be linked to the soil-freezing characteristic curve.
Environ Sci Pollut Res Int
January 2025
Department of Civil, Geological, and Environmental Engineering, College of Engineering, University of Saskatchewan, 57 Campus Drive, Engineering Building, Saskatoon, SK, S7N 5A9, Canada.
Extending unfrozen water availability is critical for stress-tolerant bioremediation of contaminated soils in cold climates. This study employs the soil-freezing characteristic curves (SFCCs) of biostimulated, hydrocarbon-contaminated cold-climate soils to efficiently address the coupled effects of unfrozen water retention and freezing soil temperature on sub-zero soil respiration activity. Freezing-induced soil respiration experiments were conducted under the site-relevant freezing regime, programmed from 4 to - 10 °C at a seasonal soil-freezing rate of - 1 °C/day.
View Article and Find Full Text PDFAdaptive hip exoskeleton control using heart rate feedback reduces oxygen cost during ecological locomotion.
Sci Rep
January 2025
Biorobotics Laboratory, Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.
Despite their potential, exoskeletons have not reached widespread adoption in daily life, partly due to the challenge of seamlessly adapting assistance across various tasks and environments. Task-specific designs, reliance on complex sensing and extensive data-driven training often limit the practicality of the existing control strategies. To address this challenge, we introduce an adaptive control strategy for hip exoskeletons, emphasizing minimal sensing and ease of implementation.
View Article and Find Full Text PDFPseudoaneurysm of the Lingual Artery in a Patient With Facial Trauma From Gunshot Wounds.
J Craniofac Surg
October 2024
School of Medicine, Wayne State University.
A pseudoaneurysm is an abnormal dilatation within the wall of a blood vessel due to the formation of a hematoma in the vessel wall after vessel injury. Because of the protective nature of the facial skeleton and the deep location of the lingual artery, the lingual artery pseudoaneurysm is rare. The authors report a case of a 20-year-old male who suffered multiple gunshot wounds, including to the mouth, presenting with immediate life-threatening injuries.
View Article and Find Full Text PDFLocal rainfall is more likely than distant thunderstorms to affect movement behaviour in Northern Kenyan elephants.
PLoS One
December 2024
Department of Biology, University of Oxford, Oxford, United Kingdom.
Previous research indicates that African savanna elephants change their movements preceding or coincident with local rainfall and it has been suggested that they respond to thunder in remote storms-perhaps reading seismic cues. We therefore aimed to test if elephants in Northern Kenya adhere to distinct daytime movement states between the wet and dry periods, and whether their abrupt movement changes precede local wet periods in response to lightning strikes from a specific compass heading. In our study site, lightning to the North and East often preceded local rainfall and could possibly be used to anticipate local wet periods, but local rainfall appears a more likely trigger of behavioural change.
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