The chemical composition of submicron (fine mode) and supermicron (coarse mode) aerosol particles has been investigated at the Jungfraujoch high alpine research station (3580 m a.s.l., Switzerland) as part of the GAW aerosol monitoring program since 1999. A clear seasonality was observed for all major components throughout the period with low concentrations in winter (predominantly free troposp...

Fundamental conservation equations for mass, momentum and energy of chemical species can be combined with thermodynamic relations to obtain secondary forms, such as conservation equations for phases, an internal energy balance and a mechanical energy balance. In fact, the forms of secondary equations are infinite and depend on the criteria used in determining which species-based equations to em...

conclusions vacuum-assisted abdominal closure is a good technique for temporary abdominal closure. in patients who are unable to achieve fascial closure, skin closure alone is safe. results after 157 trauma laparotomies, 35 (22%) were open abdomen cases with an average injury severity score was 35. ninety-four percent of open abdomens occurred after damage-control surgery. temporary vacuum-assi...

The seasonal changes in ambient mass concentrations and chemical composition of fine particulate matter (PM2.5) were investigated in three locations in Poland. The analyses included PM2.5-bound hazardous benzo(a)pyrene (BaP), As, Ni, Cd, and Pb. The samples of PM2.5 were collected daily in Katowice (southern Poland, urban background site), Gdańsk, and Diabla Góra (northern Poland, urban and reg...

When we subjected 11-dehydrothromboxane B2 (11-DTXB2), a metabolite of arachidonic acid, to standard chemical derivatization procedures we obtained a mixture of several products. Separation of the components was carried out by gas chromatography and their identification was accomplished through the study of their mass spectra, which are presented here. Anomalous behaviors include methylation of...