Hans-J. Exner

  • Citations Per Year
Learn More
Sulfate pollution of lakes and rivers is recognized as a serious problem in many regions of Central Europe, thus we evaluated the role of rewetted fens in mitigating sulfate pollution and tested if high sulfate concentrations in fen-feeding water counteract the re-establishment of their function as sinks for phosphorus (P). A long-term incubation experiment(More)
Different views exist on the influence of surface preparation on crack formation at Vickers indentations in the test used by Palmqvist [3-7] to evaluate the toughness of cemented carbides. The present experimental results clearly show that grinding diminishes the thermal tensile stresses in the cobalt phase and thus reduces the crack length. The deformed(More)
  • 1