Abstract: A device for pulling and or twisting a release arm on a side of a fifth wheel of a tractor to release the tractor from the trailer has an elongated hollow body member. A hook member is attached to a bottom section of the elongated hollow body member. A rod member is positioned within the elongated hollow body n ember, wherein the rod member moved up and down within the elongated hollow body member. A locking mechanism is used to lock the rod member in a retracted position within the elongated hollow body member and in an extended position within the elongated hollow body ember.

Abstract: Disclosed are isolated nucleic acids consisting essentially of RPW nucleotide sequences (especially RPW8 from Arabidopsis thaliana, and related homologues and other sequences e.g. from Brassica napus; B. oleracea). These encode a novel class of resistance polypeptides having an N-terminal transmembrane domain and a coiled coil domain and which is capable of recognising and activating in a plant into which said nucleic acid is introduced a specific defense response to challenge with a powdery mildew pathogen e.g. E. cichoracearum. Also provided are related products e.g. primers, polypeptides, transgenic plants having enhanced resistance, plus also processes for producing these, and methods of use.