The short chain, gaseous alkanes ethane, propane, n- and iso-butane are released in significant amounts into the atmosphere, where they contribute to tropospheric chemistry and ozone formation. Biodegradation of gaseous alkanes by aerobic microorganisms, mostly bacteria and fungi isolated from terrestrial environments, has been known for several decades. The first indications for short chain al...

We have investigated the formation and early growth of atmospheric secondary aerosol particles building on atmospheric measurements. The measurements were part of the QUEST 2 campaign which took place in spring 2003 in Hyytiälä (Finland). During the campaign numerous aerosol particle formation events occurred of which 15 were accompanied by gaseous sulphuric acid measurements. Our detailed anal...

When conventional gravity siphon venous drainage cannot achieve satisfactory venous drainage during minimally invasive cardiac and neonatal surgeries, assisted venous drainage techniques are needed to ensure adequate flow. One assisted venous drainage technique, vacuum-assisted venous drainage (VAVD), the aid of a vacuum in the venous reservoir, is now widely used to augment venous drainage dur...

SCHMUTZ P., TARJAN J., GÜNTHARDT-GOERG M. S., MATYSSEK R. & BÜCHER J. B. 1995. Nitrogen dioxide a gaseous fertilizer of poplar trees. Phyton (Horn, Austria) 35 (2): 219-232, 4 figures. English with German summary. Cuttings of a poplar clone (Populus x euramericana 'Dorskamp') were exposed to filtered air and to filtered air with 80 to 135 nl I" NO2 added in climate chambers during 12 weeks. Thr...