Xenotransplantation of Cells, Tissues, Organs and the German Research Foundation Transregio Collaborative Research Centre 127

Author(s):  
Bruno Reichart ◽  
Sonja Guethoff ◽  
Paolo Brenner ◽  
Thomas Poettinger ◽  
Eckhard Wolf ◽  
...  
2007 ◽  
Vol 22 ◽  
pp. 1-4
Author(s):  
Heinz Palkowski ◽  
Kai Michael Rudolph

This paper presents the focus of research and the structure of the Collaborative Research Centre SFB 675 “Creation of High-Strength Structures and Joints by setting up local material properties” funded in 2006 by the German Research Foundation (DFG).


2011 ◽  
Vol 473 ◽  
pp. 223-228 ◽  
Author(s):  
Bernd Arno Behrens ◽  
Anas Bouguecha ◽  
Richard Krimm ◽  
Thorsten Matthias ◽  
Valerian Salfeld

The vision of Transregional Collaborative Research Centre 73 of the German Research Foundation (DFG) is the development of a new manufacturing technology, sheet-bulk metal forming. The research activity is focused on the manufacturing of geometrically complex parts with functional elements from thin sheet metal. This paper gives an overview about the challenges in forming of asymmetrical parts with regard to the forming forces and resulting displacements of the press components. Furthermore, it introduces an appropriate approach for consideration of machine characteristics in order to improve the computational accuracy of the process modelling.


2018 ◽  
Vol 232 (7-8) ◽  
pp. 937-972 ◽  
Author(s):  
Gerd Buntkowsky ◽  
Michael Vogel ◽  
Roland Winter

AbstractEffects of interfaces on hydrogen-bonded liquids play major roles in nature and technology. Despite their importance, a fundamental understanding of these effects is still lacking. In large parts, this shortcoming is due to the high complexity of these systems, leading to an interference of various interactions and effects. Therefore, it is advisable to take gradual approaches, which start from well designed and defined model systems and systematically increase the level of intricacy towards more complex mimetics. Moreover, it is necessary to combine insights from a multitude of methods, in particular, to link novel preparation strategies and comprehensive experimental characterization with inventive computational and theoretical modeling. Such concerted approach was taken by a group of preparative, experimentally, and theoretically working scientists in the framework of Research Unit FOR 1583 funded by the Deutsche Forschungsgemeinschaft (German Research Foundation). This special issue summarizes the outcome of this collaborative research. In this introductory article, we give an overview of the covered topics and the main results of the whole consortium. The following contributions are review articles or original works of individual research projects.


2013 ◽  
Vol 765 ◽  
pp. 456-460
Author(s):  
Roland von Bargen ◽  
Axel von Hehl ◽  
Hans Werner Zoch

The continuous miniaturization of products needed e.g. in the automotive or the microelectronics sector requires process chains, which allow the manufacturing of microscopically small components in high quantities. The development of the required processes and technologies is the aim of the Collaborative Research Centre 747 “Micro Cold Forming” of the German Research Foundation. As a necessary step in the manufacturing process chain heat treatment enables the adjustment of the semi-finished micro components to cold forming. Finally, the in-service characteristics of the aluminium components have to be adjusted by precipitation hardening that increases the strength values beyond those which can be achieved by strain hardening. To provide high strength aluminium alloys with an improved thermal stability new alloy concepts and advanced production processes have been developed within the Collaborative Research Centre (CRC). Besides the scandium containing foils made of alloy Al-2Sc, foils of a novel alloy Al-4Zr with approximately 4 mass-% Zirconium has been produced by means of physical vapour deposition (PVD). In contrast to conventional strip casting techniques the PVD process operates with low temperatures, which should suppress premature precipitation during the foil production and ensure the supersaturated solid solution that is a prerequisite for precipitation hardening. Samples of this material were subsequently artificially aged and characterized by ultra micro hardness measurements (UMH), transmission electron microscopical (TEM) analysis and differential power scanning calorimetry (DPSC) to evaluate the applied aging parameters.


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