The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.

wikigene or wiki gene protein drug chemical gene disease author authorship tracking collaborative publishing evolutionary knowledge reputation system wiki2.0 global collaboration genes proteins drugs chemicals diseases compound
Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Dust in workroom air of dental laboratories.

The general workroom air of eleven dental laboratories has been surveyed with respect to dust levels arising from cutting, grinding or polishing various dental materials like chromium-cobalt-, nickel- or gold alloys, amalgam and gypsum models, porcelain or denture base material. The materials were processed with cut or lathe wheels and various stones. The levels of the elements aluminium, calcium, cobalt, copper, chromium, gold, iron, lead, magnesium, manganese, nickel, silicon, silver, tin or titanium present in the collected dust samples did not exceed the respective threshold limit values. The dust was collected in workrooms with good general ventilation as well as in rooms with no use of ventilation systems. However, in breathing air close to workpiece, i.e. at distances of about 30 cm, threshold limit values for several elements or compounds could be considerably exceeded. The chemical analysis was accomplished by means of optical emission spectrography.[1]


  1. Dust in workroom air of dental laboratories. Brune, D., Beltesbrekke, H., Melsom, S. Swedish dental journal. (1981) [Pubmed]
WikiGenes - Universities