We summarize and numerically compare two approaches for modeling and simulating the dynamics of dry granular matter. The first one, the discrete-element method via penalty (DEM-P), is commonly used in the soft matter physics and geomechanics communities; it can be traced back to the work of Cundall and Strack [P. Cundall, Proc. Symp. ISRM, Nancy, France 1, 129 (1971); P. Cundall and O. Strack, ...

This paper summarises first results of the study carrying out in the frame of the programme for co-operation between European Space Agency and Czech Republic. One part of the study concentrates on the evaluation and development of the application potential of the SAR interferometry technique for DEM generation in the Czech Republic. The only DEM currently available for the entire country is the...

The slope length and steepness (LS) factor is one of the factors in the Revised Universal Soil Loss Equation (RUSLE) needed to estimate average annual erosion rate. The LS factor is often derived from digital elevation models (DEM). DEM errors and uncertainty could affect LS factor estimation and consequently erosion rate estimation. However, DEM uncertainties are not always accounted for, and ...

Demecolcine (DEM) treatment of oocytes induces formation of a membrane protrusion containing a mass of condensed maternal chromosomes, which can be removed with minimal damage prior to somatic cell nuclear transfer (SCNT). However, the effect of this method on the distribution of maturation-promoting factor (MPF) in porcine oocytes has not been reported. Here, the level of MPF and the distribut...

Chinese hamster ovary (CHO) cells cultured in vitro were continuously exposed to increasing concentrations of diethylmaleate (DEM). Chronic exposure of these cells (designated CHO/DEM) to 80 microM diethylmaleate resulted in an increase in cystine transport, a decrease in glutathione inhibition of the enzyme gamma-glutamylcysteine synthetase, elevation of intracellular glutathione levels to 4.3...

Zusammenfassung: Anonymität im Internet bewegt sich in dem Spannungsfeld zwischen den berechtigten Interessen der Nutzer nach Selbstdatenschutz einerseits und andererseits den ebenso berechtigten Interessen der Strafverfolgungsbehörden nach Aufklärung von kriminellen Handlungen im Zusammenhang mit dem Internet. Dieses Spannungsfeld wird unter Berücksichtigung der gewonnenen Erkenntnisse aus dem...