QUANTIFICATION OF FRICTION FORCE ON DUAL-AXIS MICRO-MECHANICAL PROBE FOR FRICTION FORCE MICROSCOPY




Determination of Rhodamine 6G with direct immersion single-drop microextraction combined with an optical probe.

The combination of an optical probe and single-drop direct immersion microextraction (DI-SDME-OP) was used for the preconcentration and subsequent spectrophotometric determination of rhodamine 6G (Rh6G).The developed method is based on the formation of an ionic associate between Rh6G and picric acid at pH 3.0 and its extraction with amyl acetate.A

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Rainfall and runoff regime trends in mountain catchments (Case study area: the upper Hron River basin, Slovakia)

This paper presents an roman atwood gfuel analysis of trends and causes of changes of selected hydroclimatic variables influencing the runoff regime in the upper Hron River basin (Slovakia).Different methods for identifying trends in data series are evaluated and include: simple mass curve analysis, linear regression, frequency analysis of flood ev

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