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Innovative test method for the estimation of the foaming tendency of substrates for biogas plants.
Excessive foaming in anaerobic digestion occurs at many biogas plants and can cause problems including plugged gas pipes. Unfortunately, the majority of biogas plant operators are unable to identifyExpand
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Finally a Smoking Gun
Skill Premiums and the Supply of Young Workers in Germany
In this paper, we study the development and underlying drivers of skill premiums in Germany between 1980 and 2008. We show that the significant increase in the medium to low skill wage premiums sinceExpand
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Türkei: Erfolgsgeschichte mit unsicherer Zukunftsperspektive
Am letzten Sonntag fanden in der Turkei Parlamentswahlen statt, Anlass, einen genaueren Blick auf die jungste Wirtschaftsentwicklung des Landes zu werfen. Diese ist von einem hohenExpand
CompensatingWage Differentials and the Introduction of Smoking Bans in Germany
Using the staggered introduction of smoking bans in the German hospitality industry over 2007/08, I find a robust 2.4% decline in the daily earnings of workers in bars and restaurants associated withExpand
Essays on skills, wages, and inequality in Germany
Income inequality has increase in almost all OECD countries over the last three decades (OECD 2014) and that increase is mostly driven by increasing inequality in labor incomes (Piketty and SaezExpand