Feasibility test of per-flight contrail avoidance in commercial aviation.

Contrails, formed by aircraft engines, are a major component of aviation's impact on anthropogenic climate change. Contrail avoidance is a potential option to mitigate this warming effect, however, uncertainties surrounding operational constraints and accurate formation prediction make it unclear whether it is feasible. Here we address this gap with a feasibility test through a randomized controlled trial of contrail avoidance in commercial aviation at the per-flight level.

Cyclic di-AMP regulates genome stability and drug resistance in through RecA-dependent and RecA-independent recombination.

In , RecA plays a central role in the rescue of stalled replication forks, double-strand break (DSB) repair, homologous recombination (HR), and induction of the SOS response. While the RecA-dependent pathway is dominant, alternative HR pathways that function independently of RecA do exist, but relatively little is known about the underlying mechanism. Several studies have documented that a variety of proteins act as either positive or negative regulators of RecA to ensure high-fidelity HR and genomic stability.

Obesity is a risk factor for prolonged mechanical ventilation after tracheotomy.

Objective: To compare patient outcomes across body mass index (BMI) subgroups in the setting of recent tracheotomy.

Methods: This retrospective chart review included patients over 18 years old who underwent tracheotomy placement between February 2017 and March 2020. Patients were divided into five groups based on BMI: underweight, normal weight, overweight, obese, and morbidly obese.

Fetomaternal Outcomes of Severe Anemia in Pregnancy: A Prospective Observational Study.

Introduction Anemia during pregnancy can lead to poor pregnancy outcomes, increasing maternal, fetal, and neonatal morbidity and mortality. Timely detection and management can lead to improved pregnancy outcomes. Objective To study various fetomaternal outcomes in severe anemia during pregnancy.

Systematic review of exercise for the treatment of pediatric metabolic dysfunction-associated steatotic liver disease.

Background & Aims: Steatotic liver disease affects approximately 1 in 10 children in the U.S. and increases the risk of cirrhosis, diabetes, and cardiovascular disease.