Parental and family presence are essential: A qualitative study of children's lived experiences with family presence in pediatric intensive care.

Objective: To better understand critically ill children's lived experiences with family presence in the pediatric intensive care unit (PICU).

Study Design: This qualitative, interpretive phenomenological study is grounded in a Childhood Ethics ontology. We recruited children (aged 6-17 years) admitted to one of four participating Canadian PICUs between November 2021-July 2022 using maximum variation sampling.

Disentangling Sources of Momentum Fluctuations in Xe+Xe and Pb+Pb Collisions with the ATLAS Detector.

High-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.

Biomathematical enzyme kinetics model of prebiotic autocatalytic RNA networks: degenerating parasite-specific hyperparasite catalysts confer parasite resistance and herald the birth of molecular immunity.

Catalysis and specifically autocatalysis are the quintessential building blocks of life. Yet, although autocatalytic networks are necessary, they are not sufficient for the emergence of life-like properties, such as replication and adaptation. The ultimate and potentially fatal threat faced by molecular replicators is parasitism; if the polymerase error rate exceeds a critical threshold, even the fittest molecular species will disappear.

A national cross-sectional survey of health literacy of caregivers attending Canadian pediatric emergency departments.

Background: Health literacy assessment is key to better meeting family needs and developing informed strategies to promote positive health outcomes for children. The objective of this study was to describe the health literacy of caregivers who use Canadian pediatric emergency departments and relate it to demographic and visit-specific variables.

Methods: This study utilized a descriptive, cross-sectional survey design with medical record review.

Effects of diesel exhaust inhalation on cognitive performance in human volunteers: A randomized controlled crossover study.

Background: Mounting evidence links exposure to traffic-related air pollution (TRAP) to impairment in cognitive functioning.

Objectives: To determine if short-term, controlled exposure to diesel exhaust (DE) adversely affects one or more cognitive function domains.

Methods: We carried out a double-blinded crossover design with 28 healthy, adult volunteers.