[The fitting of prostheses for children with a lower limb amputation].

The fitting of prostheses in child or adolescent amputees enables them to reconstruct a real life project. In most cases, the functional possibilities are very close to normal. The young patient is supported throughout, from the pre-operative consultation to the long-term monitoring of the prosthesis.

First-principles calculations of X-ray absorption spectra at the K-edge of 3d transition metals: an electronic structure analysis of the pre-edge.

We first present an extended introduction of the various methods used to extract electronic and structural information from the K pre-edge X-ray absorption spectra of 3d transition metal ions. The K pre-edge structure is then modelled for a selection of 3d transition metal compounds and analyzed using first-principles calculations based on the density functional theory (DFT) in the local density approximation (LDA). The selected compounds under study are presented in an ascending order of electronic structure complexity, starting with the Ti K-edge of rutile and anatase, and finishing with the Fe K-edge of the cyanomet-myoglobin.