Before 2012, Commission 34 was identical to Division VI. The organization and executive officers of the Division and the Commission were the same. At the 2012 General Assembly (GA) in Beijing, the IAU reformed the divisional structure and the previous Division VI which Commission 34 was under was combined with Div VII to form Division H: Interstellar Matter and Local Universe. Ewine van Dishoeck was named by the IAU executive committee as the President of the new Division. Since the Commission structure is to be reformed at the GA of 2015, Commission 34 retains its original name “Interstellar Matter” and joined Commissions 33 and 37 (formally under Division VII) as commissions under the new Division H.

The business meeting of Division VI was held on Monday 10 October 2009. Apologies had been received in advance from D Breitschwerdt, P Caselli, G Ferland, M Juvela, S Lizano, M Rozyczka, V Tóth, M Tsuboi, J Yang and B-C Koo.

Distributed representations can be distributed in very many ways. The specific choice of representation for a specific model is based on considerations unique to the area of study. General statements about the effectiveness of distributed models are therefore of little value. The popularity of these models is discussed, particularly with respect to reporting conventions.

Serine proteinase activity was assayed during sporophore maturation and postharvest senescence in Agaricus bisporus. Serine proteinase accumulated largely in stipe tissue early during postharvest storage and in the later stages of maturation of unpicked sporophores. Western blot staining correlated with enzyme activity indicating de novo synthesis. The enzyme could not be detected by Western blotting in freshly harvested sporophores at an early maturation stage. Small increases in activity were detected in the cap tissue during the final stages of senescence, postharvest and in unpicked sporophores. The distribution of the serine proteinase in senescent sporophore tissues (high in stipe, low in cap) was confirmed by histochemical and immunologically stained tissue prints.