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Average Time-Delays for the Scattering of O Atoms from O Molecules.
J Chem Theory Comput
January 2025
Laboratoire ICB, UMR-6303 CNRS/uB, Université de Bourgogne, 9 avenue Alain Savary, 21078 Cedex Dijon, France.
We report full quantum-computed average microcanonical, initial state-specific, and canonical cumulative time-delays associated with the O + O scattering, presented as a function of total energy (in relation to an idealized molecular beam experiment) or temperature (for the properties of the gas phase in bulk conditions). We show that these quantities are well-defined and computable, with a temperature-dependent (canonical) time-delay presenting a smooth, monotonic decreasing behavior with temperature, despite an energy-dependent (microcanonical) time-delay of apparent chaotic character. We discuss differences in behavior when considering isotopic variations, O + OO and O + OO, with respect to the reference process O + OO and reveal a greater magnitude of the cumulative time-delay when genuinely reactive events can take place, in the presence of O.
View Article and Find Full Text PDFMethods for modeling gestational weight gain: empirical application using electronic health record data from a safety net population.
BMC Pregnancy Childbirth
January 2025
Oregon Health & Science University-Portland State University School of Public Health, Portland, OR, USA.
Background: Understanding the risks and effects of gestational weight gain (GWG) is a prominent area of perinatal research but approaches for quantifying GWG are evolving and remain underdeveloped, especially in clinical settings for underserved demographic subgroups. To fill this gap, we demonstrated and compared six GWG metrics across pre-pregnancy BMI classifications: total GWG, trimester-specific linear rate of GWG, adherence to total and trimester-specific recommendations, area under the curve, and GWG for gestational age z-scores.
Methods: We used clinical data on 44,801 pregnant people from community-based health care organizations with extensive longitudinal measures and substantial representation of understudied subgroups.
Post-colonoscopy cancer rates in Scotland from 2012 to 2018: A population-based cohort study.
Colorectal Dis
January 2025
Department of Surgery, NHS Lanarkshire, Lanarkshire, UK.
Aim: The aim of this work was to quantify post-colonoscopy colorectal cancer (PCCRC) rates in National Health Service (NHS) Scotland using World Endoscopy Association guidelines, compare incidence between health boards and referral streams and explore comparisons in results with published data from other healthcare systems.
Method: This is a population-based cohort study using NHS Scotland data between 2012 and 2018. All people undergoing colonoscopy between 2012 and 2018 and subsequently diagnosed as having bowel cancer up to 3 years after their investigation were included.
Range shifts as drivers of niche breadth and dispersal ability in wild populations.
J Anim Ecol
January 2025
Department of Biology, University of North Carolina, Chapel Hill, North Carolina, USA.
Research Highlight: Edwards, O. M., Zhai, L.
View Article and Find Full Text PDFNutrient distribution and nitrate processing in a mangrove tidal creek affected by submarine groundwater discharge (SGD).
Mar Pollut Bull
January 2025
State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China.
Investigations of the spatial-temporal variations of nutrients within mangrove coastal zones are essential for assessing the environmental status of an aquatic ecosystems. However, major processes controlling nitrate cycle along the submarine groundwater discharge (SGD) pathway from the mangrove areas to adjacent tidal creek remain underexplored. A time series measurement over a 25 h tidal cycle was conducted in Qinglan Bay tidal creek (Hainan Island, China).
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