Sheppard

New SARS-CoV-2 variants that have accumulated multiple mutations in the spike (S) glycoprotein enable increased transmission and resistance to neutralizing antibodies. Here, we study the antigenic and structural impacts of the S protein mutations from four variants, one that was involved in transmission between minks and humans, and three that…[Read more]

The mechanical properties and fracture behaviour of concretes under different triaxial stress states were investigated based on a 3D mesoscale model. The quasistatic triaxial loadings, namely, compression-compression-compression (C-C-C), compression-tension-tension (C-T-T) and compression-compression-tension (C-C-T), were simulated using an…[Read more]

The objective of this single-centre, action research study was to increase resident experience performing operative vaginal deliveries. The secondary objective was to assess the incidence of maternal and neonatal complications. The rate of forceps deliveries increased in the post-training period (1.8%-4.0%; P less then 0.001) but the overall rate…[Read more]