A new method for solving the wave equation is presented, called the learned Born series (LBS), which is derived from a convergent Born series but its components are found through training. The LBS is shown to be significantly more accurate than the convergent Born series for the same number of iterations, in the presence of high contrast scatterers, while maintaining a comparable computational complexity. The LBS is able to generate a reasonable prediction of the global pressure field with a small number of iterations, and the errors decrease with the number of learned iterations.
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CJEM
January 2025
Sexual Assault and Partner Abuse Care Program, The Ottawa Hospital, Ottawa, ON, Canada.
Introduction: The primary objective was to evaluate the effectiveness of telemedicine for improving clinical follow-up for survivors of sexual assault and intimate partner violence after an emergency department (ED) visit. The Sexual Assault and Partner Abuse Care Program (SAPACP) is an ED-based clinic for survivors of sexual assault/intimate partner violence. Virtual Visit, a telemedicine platform, was introduced at SAPACP in January 2020, allowing patients to attend follow-up virtually.
View Article and Find Full Text PDFObstet Med
December 2024
Specialist Perinatal Mental Health Service, University Maternity Hospital Limerick, Limerick, Ireland.
Background: Cannabinoid hyperemesis syndrome (CHS) is a syndrome of cyclic nausea and vomiting in the setting of chronic cannabis use. To date, only 11 cases of CHS in pregnancy have been reported.
Case Presentation: We describe two cases of uncontrolled vomiting in pregnancy due to CHS.
Resuscitation
December 2024
University Hospitals Birmingham NHS Foundation Trust, Birmingham Heartlands Hospital B9 5SS UK; Warwick Clinical Trials Unit, University of Warwick, Coventry, CV4 7AL.
Objective: To examine maternal and neonatal outcomes following Resuscitative Hysterotomy for out of hospital cardiac arrest (OHCA) and to compare with timing from cardiac arrest to delivery.
Methods: The review was registered with PROSPERO (CRD42023445064). Studies included pregnant women with out of hospital cardiac arrest and resuscitative hysterotomy performed (in any setting) during cardiac arrest.
JACS Au
December 2024
Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States.
Red-light absorbing photoredox catalysts offer potential advantages for large-scale reactions, expanding the range of usable substrates and facilitating bio-orthogonal applications. While many red-light absorbing/emitting fluorophores have been developed recently, functional red-light absorbing photoredox catalysts are scarce. Many photoredox catalysts rely on long-lived triplet excited states (triplets), which can efficiently engage in single electron transfer (SET) reactions with substrates.
View Article and Find Full Text PDFEnviron Int
December 2024
Faculty of Health, University of Canterbury, Christchurch, New Zealand; GeoHealth Laboratory, University of Canterbury, Christchurch, New Zealand; College of Health, Wellbeing and Life Science, Sheffield Hallam University, Sheffield, United Kingdom.
Background: The beneficial impacts of greenspace availability on mental health are well-documented. However, longitudinal evidence using a spatial lifecourse perspective is rare, leaving the dynamics of how greenspace influences mental health across the lifecourse unclear. This study first uses prospective birth cohort data to examine the associations between greenspace availability in childhood (0-16 years) and mental health in adolescence (16 years) and between greenspace availability and mental health across adulthood (18-40 years).
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