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The nonlinear vibrations of dynamic soil compactors are taken as the basis for feedback control systems for intelligent compaction. According to the achieved compaction, the parameters of the soil compactor are continuously changed. The vibratory roller measures permanently the stiffness of the subgrade. In conjunction with GPS-data, this measurement can be(More)
Betabellin 15D is a 64-residue, disulfide-bridged homodimer. When folded into a beta structure, the protein is predicted to have two clusters of three histidine residues, each cluster able to bind a divalent metal ion. When the protein was incubated with Cu2+, Zn2+, Co2+, or Mn2+, metal complexes of betabellin 15D were observed by electrospray-ionization(More)
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