as the natural venue for its best research.The range of research fields published in Journal of Ecology has always been comprehensive. From the outset it accepted work on general principles, concepts, methods and surveys, and displayed a strong focus on synecological and autecological studies related to geography, geology, meteorology and climatology, plant physiology and anatomy, and floristic phytogeography (Tansley 1913). Autecological studies have remained a particular strength of the Journal throughout its first century of publication (e.g. Clapham 1956;Harper 1967), as reflected in the long-running series of detailed accounts of ecological knowledge about individual plant species published under the banner of the Biological Flora of the British Isles
Es ist nicht mehr zu übersehen: Eine neue Generation von Do-it-yourself-Aktivisten nutzt die postfordistische Stadt als Labor für soziale, politische, ökologische und ästhetische Experimente. Ob im Gemeinschaftsgarten oder im FabLab, ob in Offenen Werkstätten oder bei Tausch-Events - überall hinterfragen die Protagonistinnen und Protagonisten das Verhältnis von Konsum und Produktion, problematisieren den Warencharakter der Dinge und des in ihnen eingeschlossenen Wissens. Dieser anspruchsvolle Bildband kombiniert visuelle Streifzüge durch die neuen urbanen Räume des Selbermachens mit anregenden Zeitdiagnosen. Die Beiträge veranschaulichen: Die jungen Urbanen setzen nicht auf Opposition, sondern folgen dem Bedürfnis nach »echter Demokratie«, indem sie (Atmo-)Sphären des Teilens und Tauschens schaffen. Sie praktizieren kollaborativen Konsum und bespielen den öffentlichen Raum nach Commonisten-Art.
High effective Halon ®re protection systems were introduced as a technical standard during many years. Because these substances are harmful to the ozone layer, this technology was prohibited. Looking for alternatives in a ®rst step INERGEN or CO 2 pressure gas systems were applied, which show strong disadvantages with respect to extinguishing ef®ciency and toxicity. As a consequence a new gas generator concept is proposed, based on the idea to produce N 2 by a chemical reaction out of a solid gas generator. The technology enables small units of low mass with suitable escape characteristics of the gas. Within the presented work test results of a model formulation are described and discussed.
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