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One mechanism of silver resistance in microorganisms is accumulation of the metal ions in the cell. Here, we report on the phenomenon of biosynthesis of silver-based single crystals with well-defined compositions and shapes, such as equilateral triangles and hexagons, in Pseudomonas stutzeri AG259. The crystals were up to 200 nm in size and were often(More)
Nitrated polycyclic aromatic hydrocarbons (NPAHs) and N-heterocyclic aromatic hydrocarbons (azaarenes) are as ubiquitous in the environment as their parent PAH compounds, although occurring at lower concentrations. The toxicological importance of NPAHs and azaarenes is based on their mutagenic and carcinogenic potential. Azaarenes possess a higher(More)
The oxidizing activity of CYP109B1 from Bacillus subtilis was reconstituted in vitro with various artificial redox proteins including putidaredoxin reductase and putidaredoxin from Pseudomonas putida, truncated bovine adrenodoxin reductase and adrenodoxin, flavodoxin reductase and flavodoxin from Escherichia coli, and two flavodoxins from B. subtilis (YkuN(More)
for their helpful and insightful comments. We are eternally grateful to Patty Zielinski for her expert technological, editorial assistance as well as her perseverance and patience. We also graciously thank the Ford Foundation for its support. 1 There is a rapidly growing legal literature on the ramifications of recent intellectual property legislation and(More)
Although the manual creation of time-triggered schedules for multi-core real-time systems can be a daunting task, state-of-the-art scheduling algorithms are far from being widely used. This suggests that the availability of sound algorithms is only one side of the story: real-time systems have to be groomed substantially before they can serve as input to(More)
—Robotics systems usually comprise sophisticated sensor and actuator systems with no less complex control applications. These systems are subject to frequent modifications and extensions and have to adapt to their environment. While automation systems are tailored to particular production processes , autonomous vehicles must adaptively switch their sensors(More)
Current trends, such as mixed-criticality real-time systems, boost performance by leveraging system dynamics and adaptivity. This, however, also amplifies challenges for control engineering and real-time-system design. Experiments with control applications indicate problems with traditional assumptions such as ‘better response times will not decrease the(More)
In neoclassical economic theory, rational actors are very simple entities: they know everything, they value more better than less, and given a decision situation with certain physical constraints they are able to calculate the optimal outcome and to behave accordingly (cf. Kiser/Ostrom). Any form of social interaction enters the decision situation as an(More)
Current trends, such as mixed-criticality real-time systems, boost performance by leveraging system dynamics and adaptivity, but also amplify challenges for control engineering and real-time-system design. Applications behave more adaptively and more applications will be consolidated on the same realtime system competing for the same resources, turning(More)
Silver is accumulated to high concentrations in certain microbial strains. Here a bomb digestion method is proposed, using HNO3 and HCl, for the extraction and digestion of silver and silver compounds from the organic matrix. The method is applicable for the quantitative determination of silver by inductively coupled plasma atomic emission spectroscopy.