Optimization of the SiC Powder Source Material for Improved Process Conditions During PVT Growth of SiC Boules.

We have studied the influence of different SiC powder size distributions and the sublimation behavior during physical vapor transport growth of SiC in a 75 mm and 100 mm crystal processing configuration. The evolution of the source material as well as of the crystal growth interface was carried out using in situ 3D X-ray computed tomography (75 mm crystals) and in situ 2D X-ray visualization (100 mm crystals). Beside the SiC powder size distribution, the source materials differed in the maximum packaging density and thermal properties.

Parameters for positive outcome of the in-hospital rehabilitation of spinal cord lesion patients: the Boberg Quality Score.

Study Design: Monocentric Cohort Study.

Objective: Development of a multi-dimensional outcome score of the rehabilitation of spinal cord injury (SCI) patients.

Setting: Level 1 Trauma centre with large spinal unit.

[Vocational integration of disabled patients--perspectives and recommendations in changing labor market conditions].

Current labour market developments, i.e. decreasing manpower demands, aggravation of selection, will in the years ahead confront vocational rehabilitation policy, too, with important decisions in terms of expanded service provision or intensified selectiveness.