Volume 24 Issue 1 January 2010

Athanasios Vazdirvanidis,1 George Pantazopoulos 1 and Konstantinos Stamatakis 2
1. ELKEME Hellenic Research Centre for Metals, Athens, Greece. 2. Public Power Corporation, Athens, Greece
Hardened steels are used extensively in the gear boxes and bearings of bucket-wheel excavators in the mining industry. The microstructural characteristics and the surface and mechanical properties of the materials selected for these parts are critical factors in their reliability under the highly demanding conditions of use...

John Rodenburg and Andrew Maiden, Dept of Electronic and Electrical Engineering, University of Sheffield, UK
Using a recently-developed computational algorithm, it is now possible to generate wide field-of-view transmission images by recording a number of diffraction patterns from different parts of a specimen. By disposing of the lens, various experimental advantages arise...