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Electric scalpels are used for cutting of biological tissue, for example, for resection of tumour tissue in surgery. During the electrosurgical procedure a plasma is ignited in a gap between the electric scalpel and the tissue. In this study, the plasma operated on porcine kidney and a tissue substitute (cellulose impregnated with isotonic saline) is characterised by means of voltage‐current measurements,...
A low-pressure VHF-CCP is used to investigate the impact of H2 and O2 plasma on bio-macromolecules. Since both, plasma and cells, are very complex systems, bio-macromolecules are used to identify possible inactivation mechanisms. With the ubiquitous enzyme GAPDH, enzyme activity tests were carried out before and after plasma treatment, revealing that oxygen plasma leads to a higher inactivation than...
Apoplexy of pituitary adenomas with subsequent hypopituitarism is a rare but well recognized complication following cardiac surgery. The nature of cardiac on-pump surgery provides a risk of damage to the pituitary because the vascular supply of the pituitary is not included in the cerebral autoregulation. Thus, pituitary tissue may exhibit an increased susceptibility to hypoperfusion, ischemia or...
Cities are highly modified environments in which the only areas that resemble natural landscapes are urban parks with low human population density. Attempts are frequently made to maintain high bird diversity in cities for aesthetic or educational reasons. However, it remains unclear whether local site characteristics are important in determining bird assemblage composition or whether simplification...
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