The impact of interfacial dynamics on turbulent heat transfer at a deformable, sheared gas-liquid interface is studied using Direct Numerical Simulation (DNS). The flow system comprises a gas and a liquid phase flowing in opposite directions. The governing equations for the two fluids are alternately solved in separate domains and then coupled at the interface by imposing continuity of velocity...

OBJECTIVE To describe the prevalence of bullying victims, the characteristics of those victims and their associated symptoms in the domains of emotion, behavior, hyperactivity and peer relationships. METHOD This was a cross-sectional study nested in a cohort that assesses disorders of reading, writing and arithmetic in 1,075 students enrolled in the first to eighth grades of two public school...

Objective: To determine the prevalence of burnout syndrome among resident physicians of various specialties and to evaluate associated factors. Method: The Maslach Burnout Inventory questionnaire and a sociodemographic questionnaire were used to evaluate factors associated with the syndrome. Burnout was defined as the association of high emotional exhaustion, depersonalization and low profess...

Platelet-derived growth factor beta receptor (PDGFbetaR) is a transmembrane receptor tyrosine kinase involved in a variety of cellular functions. We have generated a constitutively activated murine PDGFbetaR containing a valine to alanine substitution at residue 536, located in the cytoplasmic juxtamembrane domain. When this mutant receptor (PR-V536A) was expressed in Ba/F3 cells, it allowed th...

The Rcs (regulator of capsule synthesis) signalling complex comprises the membrane-associated hybrid sensor kinases RcsC and RcsD, the transcriptional regulator RcsB and the two co-inducers RcsA and RcsF. Acting as a global regulatory network, the Rcs phosphorelay controls multiple cellular pathways including capsule synthesis, cell division, motility, biofilm formation and virulence mechanisms...

pneumorrhachis (pr), which involves the entrapment of air or gas within the spinal canal, is a rare clinical entity. the pathogenesis and etiology of this uncommon entity vary and may present a diagnostic challenge. air in the spinal canal can be divided into primary and secondary pr, extra- or intradural pr and etiologically classified as iatrogenic, traumatic and non-traumatic. pr is typicall...