Influence of user-defined parameters on diffusion tensor tractography of the corticospinal tract.

This study discusses the influence of user-defined parameters on fiber tracking results obtained from a standard deterministic streamline tractography algorithm. Diffusion tensor imaging with fiber tractography was performed in five healthy volunteers. A region of interest was highlighted in the ventral part of the pons at the level of the middle cerebellar peduncle.

Continuous biogas production from fodder beet silage as sole substrate.

Since April 2000 a two-step anaerobic plant with two subsequent 500 m3 reactors has been producing biogas from fodder beet silage (pH 3.4-4.1) as the sole substrate.

[The artist in the 2d half of his professional life].

The authors apply the basic conceptions of gero-hygiene to the care of artists. As to the dispensaire care of artists, the particular correlations between professional activity, health, and age are referred to. The highly specialized professional training and qualification for these professions, as well as all occupationally induced injuries occurring, above all, occupational diseases of performing artists of orchestra musicians, and further artistic groups of activities, require a specific preparation for age.

[The age distribution of occupational disease (author's transl)].

The author analyses the incidence of occupational diseases in 1979 and their distribution according to age. Almost two thirds of all occupational diseases are detected in the latter half of life. The fact that noise-induced defective hearing, degenerative changes in the locomotor system, silicosis, asbestosis, and cancer of the airways due to occupational factors occur late in life cannot be primarily attributed to the physiological process of ageing.