Changes in deformation resistance are studied during completely reversed strain cycling of steels hardened to yield strengths in excess of 200 ksi by quenching and tempering, quenching and deforming at elevated temperature, ...

Nonautonomous P elements normally excise and transpose only when a source of transposase is supplied, and only in the germline. The germline specificity depends on one of the introns of the transposase gene which is not ...

A single P element insert in Drosophila melanogoster, called P[ry+A2-3](99B), is described that causes mobilization of other elements at unusually high frequencies, yet is itself remarkably stable. Its transposase activity ...