Publications database

The COSY accelerator was running more than 7000 hours. Like in the past a remarkable availability of 94% was achieved [...]

The detection of neutron emission arising from conditioned radioactive waste is a nondestructive assay method for the determination of transuranic and fissile material. Active and passive neutron interrogation have to be distinguished. [...]

The present study deals with the integrated evaluation ofmaterial and energy flows for SOFC high-temperature fuel cells in a 10 MW-plant. In addition to the fuel cell, the different peripheral components necessary to allow power production are included into the investigation [...]

Grundwasser ist eine erneuerbare Ressource. Informationen zur Grundwasserneubildung werdenbei nahezu allen wasserwirtschaftlichen Verfahren benötigt. [...]

Nitrous oxide (N2O) and nitric oxide (NO) are atmospheric trace gases that contribute to climate change and affect stratospheric and ground-level ozone concentrations. Ammonia oxidizing bacteria (AOB) and archaea (AOA) are key players in the nitrogen cycle and major producers of N2O and NO globally. [...]

In this work, we used the 15N labelling technique to identify the sources of N2O emitted by a subtropical soil following application of mineral nitrogen (N) fertiliser (urea) and residues of a legume cover crop (cowpea). For this purpose, a 45-day incubation experiment was conducted by subjecting undisturbed soil cores from a subtropical Acrisol to five different treatments: (1) control (no crop residue or fertiliser-N application); (2) 15N-labelled cowpea residue (200 μg N g–1 soil); (3) 15N-labelled urea (200 μg N g–1 soil); (4) 15N-labelled cowpea residue (100 μg N g–1 soil) + unlabelled urea (100 μg N g–1 soil); and (5) unlabelled cowpea residue (100 μg N g–1 soil) + 15N-labelled urea (100 μg N g–1 soil). [...]

Since high-value bacterial secondary metabolites, including antibiotics, are often naturally produced in only low amounts, their efficient biosynthesis typically requires the transfer of entire metabolic pathways into suitable bacterial hosts like Pseudomonas putida. Stable maintenance and sufficient expression of heterologous pathway-encoding genes in host microbes, however, still remain key challenges. [...]