Motivated by recent experiments showing that a variety of stiff biopolymer gels exhibit highly unusual negative normal elastic stresses, we simulate networks of elastic rods over a wide range of concentrations and bending stiffness. In all cases, we find that sheared networks develop significant negative normal stresses that coincide with other elastic nonlinearities, including shear stiffening...

John L. Fitzpatrick,a,b,c, David J.D. Earn,d Carol Bucking,b,c Paul M. Craig,b,c Sunita Nadella,b,c Chris M. Wood,b,c and Sigal Balshinee aComputational and Evolutionary Biology, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK, bDepartment of Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada, cBamfield Marine Sciences Centre, 100 P...

Purpose: This study investigated the clinical effects of laryngeal mask and tracheal intubation on infant anaesthesia. Methods: A total of 60 cases of children undergoing surgery were selected in our hospital from September 2013 to June 2015. They were randomly divided into two groups: study and control groups. The study group underwent laryngeal mask anaesthesia, whereas the control group unde...