Die „Hysteresis“ wässeriger Aufschwemmungen humoser Böden

Ohne Zusammenfassung     

Synthesis and isolation of methyl bismuth cysteine and its definitive identification by high resolution mass spectrometry

After the synthesis and isolation of methylated bismuth cysteine, its initial identification by IR-spectroscopy was performed, whereas for definitive identification, high resolution mass spectrometry (ESI-TOF-MS and LTQ Orbitrap) was carried out.     

Der Grenzkegelschnitt

Ohne ZusammenfassungMit 3 Figuren im Text.     

Bemerkung zu einem Satze von A. Kneser über die Charakteristiken einer partiellen Differentialgleichung erster Ordnung

Ohne Zusammenfassung     

Influence of liquid layers on energy absorption during particle impact

The influence of the thickness of a covering liquid layer and its viscosity as well as the impact velocity on energy loss during the normal impact on a flat steel wall of spherical granules with a liquid layer was studied. Free-fall experiments were performed to obtain the restitution coefficient of elastic–plastic Al2O3 granules by impact on the liquid layer, using aqueous solutions of hydroxypropyl methylcellulose with different concentrations for variation of viscosity (1–300 mPa s). In the presence of a...