Publications by authors named "F A LEFEVRE"
Article Synopsis
- The study examines how management practices in forests can affect natural selection and adaptations to environmental stress, specifically drought.
- By using a modeling approach with the Luberon2 simulation, researchers explored the effects of tree thinning on growth traits and drought sensitivity over three generations.
- Results indicate that while thinning reduced competition pressures, traditional practices that favor larger trees may unintentionally enhance genetic traits that are not beneficial for long-term drought resilience.
Article Synopsis
- - The study examines the relationship between tree maturation size and reproduction, finding that larger tree species tend to start reproducing at a smaller size than expected, challenging previous assumptions.
- - Researchers analyzed seed production data from 486 tree species across different climates, revealing that maturation size increases with maximum size but not in a straightforward manner.
- - The results indicate that this trend is particularly pronounced in colder climates, highlighting the importance of understanding maturation size to better predict how forests will respond to climate change and disturbances.
Background: In chronic intermittent hemodialysis, heparin is the standard anticoagulant as is the use of acid-containing dialysate. Regional anticoagulation (RA) with a calcium-free, citrate-containing dialysate has been developed. We compared RA using a calcium-free, citrate-free dialysate, routinely used in our center, versus systemic heparinization.
View Article and Find Full Text PDFMars' water history is fundamental to understanding Earth-like planet evolution. Water escapes to space as atoms, and hydrogen atoms escape faster than deuterium giving an increase in the residual D/H ratio. The present ratio reflects the total water Mars has lost.
View Article and Find Full Text PDFIntroduction: Although numerous risk factors and prediction models affecting morbidity and mortality in geriatric hip fracture patients have been previously identified, there are scant published data on predictors for perioperative Surgical Intensive Care Unit (SICU) admission in this patient population. Determining if a patient will need an SICU admission would not only allow for the appropriate allocation of resources and personnel but also permit targeted clinical management of these patients with the goal of improving morbidity and mortality outcomes. The purpose of this study was to identify specific risk factors predictive of SICU admission in a population of geriatric hip fracture patients.
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