Die Europäische Route der Backsteingotik Impulsgeber für die regionale Entwicklung

Abstrakt Den Problemen peripherer Regionen stehen Chancen gegenüber – eine davon kann Tourismus sein. Die Europ?ische Route der Backsteingotik (EuRoB) gibt dem Kulturtourismus rund um die Ostsee Impulse. Sie greift das einmalige hanseatische Kulturerbe auf und vernetzt St?dte und Regionen in sieben Staaten. Damit tr?gt sie dazu bei, einer strukturschwachen Region touristisches Gewicht zu verleihen. Touristische Entwicklung ist wirtschaftliche Entwicklung. Das er?ffnet Perspektiven für die Bev?lkerung, eine Grundvoraussetzung für soziale, ?konomische und demographische Stabilisierung. Für die St?dte wiederum, die sich dadurch weiterentwickeln, ergeben sich Chancen im Wettbewerb, der zunehmend globaler wird und ganze Landstriche abzuh?ngen droht.     

Briefe im 19. Jahrhundert als wissenschaftshistorische Quelle. Dargestellt am Beispiel des Briefwechsels des Apothekers A. P. J. Du Menil (1777–1852)

The aim of this article is to demonstrate the importance of scientific communication of pharmacists in the 19th century. 89 letters were analysed both written received by August Peter Julius Du Menil (1777–1852). In the paper also a summary is given about the importance of extensive activity of the pharmacist Du Menil. He was be in correspondence with 39 scientists, for instance 13 physicans and 12 pharmacists. The letters are an interesting document about scientific community in the 19th century.     

The evolution of strength,elasticity and rupture behaviour of birch tar made with ‘double-pot’ techniques during tar cooking

Birch tar was the first adhesive produced by humans. Its study has consequences for our understanding of human evolution and the development of specialised craftsmanship. One of the better-documented birch tar making methods is the ‘double-pot’ technique, where two containers are used, one containing bark, the other collecting the tar. Birch tar made with double-pots has low viscosity and bad adhesive properties. To obtain a usable adhesive, it must be reduced in volume by cooking. We investigate the evolution of tar’s mechanical properties during cooking. We use lap-shear tests to investigate strength, stiffness and failure behaviour. We found that tar must be cooked for 90 min to acquire adhesive properties. When cooked for longer, strength and stiffness increase over a 30 min lasting time span. Cooking for even longer, beyond this 30 min window, produced a substance that could no longer be used as an adhesive. The implications are that tar cooking requires a high level of skill because specific signs indicating the desired properties must be recognised during the process. Tar cooking constitutes a supplementary investment in time and resources and appears to be associated with a certain degree of risk.     

Mortars in context: An integrated study of mortars and plasters from the so-called Ginnasio in Solunto (Sicily,Italy)

This paper presents a multipronged scientific study of mortars and plasters of the so-called Ginnasio in the Hellenistic–Roman city of Solunto (Sicily, Italy). A selection of 16 well-contextualized samples was collected to represent different functions and building phases of this private house. The results show that a variety of locally available raw materials was used as aggregates and to produce binders. The diversity of raw materials’ sources and production techniques identified in this study reveals the advanced technological knowledge of the builders of Solunto, indicating a complex relationship between the settlement's cityscape and its surrounding landscape.     

Memories of vacant lots: how and why residents used informal urban green space as children and teenagers in Brisbane,Australia, and Sapporo,Japan

Contact with nature is vital for the development of children and teenagers. In the past, informal urban green spaces (IGS) such as vacant lots appear to have been used for such purposes. We need to better understand how previous generations used IGS to make sure young people today can also enjoy its social, mental, emotional and physical health benefits. This study quantitatively compared adult residents' memories of IGS use in their childhood and teenage years in two geographically and culturally distinct cities: Brisbane, Australia, and Sapporo, Japan. The results showed most respondents (>70%) remembered using IGS in the past, and preferred it over other green space because it was easily accessible. Most (>70%) recalled experiencing no problems (e.g. danger of injury) when using IGS, a contrast to recently increasing parental concern for children's safety. Such factors may limit present IGS use and prevent it from fulfilling the important role it played for previous generations' recreation.