The kinematics of an arresting-hook unit are studied in order to determine, within the limits of the assumption of a perfectly rigid hook unit, the damper force necessary to control hook bounce. The necessity for a smooth deck and the desirability of small trail angle for the hook unit are demonstrated from several aspects. The design requirements for a hook damper unit are discussed in all the...

Three cases of branchial plexus injury due to handcuffing with the hands behind the back are presented.

The study of the informal fallacies has an importance acknowledged by its place in both ancient and contemporary logic texts. Unfortunately, their study produces what Hamblin [3] has called the Standard Treatment. bereft of theory, laden with dogma and hoary illustrations appropriated from Aristotle, a corpus that often seems more to perpetrate the fallacies than to explicate them. Recently, ho...

The tumour suppressor PTEN (phosphatase and tensin deleted on chromosome 10) is an important regulator of cell proliferation and migration. In this issue of The EMBO Journal, Lima-Fernandes and colleagues show that the universal signalling scaffold protein, b-arrestin dynamically interacts with PTEN, through a phosphorylationcontrolled switch. This protein–protein interaction profoundly influen...