Heinrich Hühnerfuss

TL;DR: Relative amounts of the three compounds were determined in different types of water showing characteristic patterns, with hydroxy-ibuprofen being the major component in sewage whereas carboxy-ib uprofen was dominant in seawater samples.

TL;DR: In this article, a wave attenuation by viscoelastic surface films is attributed to the Marangoni effect, which causes a strong resonance-type wave damping in the short-gravity-wave region, and to nonlinear wave-wave interaction, by means of which wave energy is transferred from the longer waves to the energy sink in the MARANGoni resonance region.

TL;DR: Whereas clofibric acid, caffeine and DEET showed to be present throughout the North Sea in concentrations of up to 1.3, 16 and 1.1 ng/L, respectively, propyphenazone could only be detected after further clean-up, and was below the detection limit in all samples.

TL;DR: In this article, the results from the analyses of several spaceborne imaging radar-C/X-band synthetic aperture radar images were presented, which were acquired during the two Space Shuttle Endeavour missions in April and October 1994 by the L-, C-, and X-band multipolarization SAR aboard the space shuttle Endeavor.

TL;DR: Seven polymeric solid-phase extraction sorbents were evaluated with regard to their ability to extract acidic, neutral and basic pharmaceuticals and estrogens simultaneously from water at neutral pH to refine an extraction method for the quantitative determination of acidic and neutral drugs in surface water samples at detection limits below 1 ng/l.