ZUSAMEN-FASSUNG:  Die oben angefuerte Erlaeuterung und Dis­kussion umfasst (I)- normale Entwicklung ein­zelner Hauptkomponente des menschlichen Immunmechanismus, ( 2) Faktoren, die moegli­cherweise fetalen Immunsystem aktivieren, (3) Faktoren, welche die Entwicklung des Immun­systems stoeren koennen.  REFERENCES 

ausser der traditionellen nutzung der geothermalen energie sind in jungster zeit neue erkenntnisse und projekte in ausarbeitung, die fur die zukunft ausserst wichtig sein konnen. bei einigen dieser projekte hat man bereits einige sehr positive ergebnisse erzielt. ausserdem wurde klar, das die ausgaben fur exploration,und expleitaion wirtscnaftlich ohneweiteres vsrtretbar sind,j•a sogar in hinbl...

Rectangular waveguide is one of the earliest types of transmission lines. Rectangular waveguide can be produced by hot extrusion process. In this paper, the hot extrusion process of CuZn5 rectangular waveguide was investigated by Finite Element Method (FEM). In addition, Genetic Algorithm (GA) was used to optimize the die geometry and process conditions to achieve the lowest magnitude of extrus...

In any metal forming process, both the strain rate and deformation rate depend on the die profile. The die profile also, is responsible for the non-uniformity of the deformation along the cross-section. These affect the quality and mechanical properties of the product. Therefore, if a die is designed, in which the affecting variables can be controlled spontaneously it is hoped to obtain a produ...

In this paper, unique tests into the production of galvanised steel wires in industrial conditions were presented. It was demonstrated that three phenomena occur during wire-drawing process at high speeds: namely, zinc sticking to surface drawing drums, coating grinding caused by a larger friction area between tool and material, combined with detachment calibrating part die until wire breaks is...

This report describes the Fifth Annual Graph Drawing Contest , held in conjunction with the 1998 Graph Drawing Symposium in Montreal, Canada. The purpose of the contest is to monitor and challenge the current state of the art in graph-drawing technology 4, 5, 6, 7].