11-20 von 173 Publikationen
Auf dem goldenen Weg? Alternative Geschäftsmodelle für Open-Access-Primärpublikationen
Publications in Open Access media are free of charge to the readers but nevertheless need to be financed. Scholars, their institutions and libraries as well as research funders contribute. This places them in a new position ...
Geographic bias of field observations of soil carbon stocks with tropical land-use changes precludes spatial extrapolation
Accurately quantifying changes in soil carbon (C) stocks with land-use change is important for estimating the anthropogenic fluxes of greenhouse gases to the atmosphere and for implementing policies such as REDD (Reducing ...
Anchored Hyperplane Location Problems
The anchored hyperplane location problem is to locate a hyperplane passing through some given points P ⊆ Rn and minimizing either the sum of weighted distances (median problem), or the maximum weighted distance (center ...
Competition Horses Housed in Single Stalls (II): Effects of Free Exercise on the Behavior in the Stable, the Behavior during Training, and the Degree of Stress
Although housing horses in single stalls limits their natural behaviour to a great extent, this housing system is widespread in Germany, especially for competition horses. To improve the welfare of this system, free exercise ...
Temporary Turnout for Free Exercise in Groups: Effects on the Behavior of Competition Horses Housed in Single Stalls
In Germany most competition horses are housed in single stalls and free exercise is not permitted in many cases. The reason for not allowing free exercise is mostly the risk of injury. Additionally, opinions exist that the ...
Hard X-Ray Focusing with Curved Reflective Multilayers
This paper provides a comprehensive overview on the utilization of curved graded multilayer coatings as focusing elements for hard X-rays. It concentrates on the Kirkpatrick-Baez (KB) focusing setup that has been developed ...
Effects of the Presence of Pyrite and Carbonate Minerals on the Kinetics of the Uranium Release from a Natural Rock
The influence of calcite, dolomite, pyrite and vaterite on the kinetics of uranium (U) release from a natural rock under relevant i.e. field conditions has been investigated. The time dependence of the U release has been ...
Survey of maize from south-western Nigeria for zearalenone, alpha- and beta-zearalenols, fumonisin B1 and enniatins produced by Fusarium species.
A survey for the natural occurrence of Fusarium mycotoxins in maize for human consumption in four south-western states of Nigeria using High Performance Liquid Chromatography coupled with Mass Spectroscopy (HPLC/MS) showed ...
Comments on: “Decontamination of solutions containing EDTA using metallic iron”
This letter presents an improved discussion of the data provided in a recent article on EDTA removal from aqueous solutions using elemental iron (Fe(0)) by O. Gyliene and his co-workers. It is shown that the authors have ...
Experimental and theoretical study of multi-quantum vibrational excitation: NO(v = 0→1,2,3) in collisions with Au(111).
We measured absolute probabilities for vibrational excitation of NO(v = 0) molecules in collisions with a Au(111) surface at an incidence energy of translation of 0.4 eV and surface temperatures between 300 and 1100 K. In ...