Abstract Background The transition to a parasitic lifestyle entails comprehensive changes to the selective regime.In parasites, genes encoding for traits that facilitate host detection, exploitation and transmission should be under selection.Slavemaking ants are social parasites that exploit the altruistic behaviour of their hosts by stealing heter
Although bladed disks are nominally designed to be cyclically symmetric (tuned system), the vibration characteristics of all blades on a disk are slightly different due to the manufacturing tolerance, deviations in the material properties, and wear during operation.These small variations break the cyclic symmetry and split the eigenvalue pairs.Blad
The importance of road safety education is Waterproof Breeks widely acknowledged; however, there is a lack of consistency in road safety interventions currently being used in UK schools.Furthermore, the majority of road safety educational programmes use knowledgebased methods, which do not necessarily translate to improved behaviour in real traffic