Removal of natural organic dyes from wool–implications for ancient textile provenance studies

Ancient wool textiles recovered from archaeological sites are in many cases originally dyed with natural organic dyestuffs from vegetable sources. These include among others woad (Isatis tinctoria L.), weld (Reseda luteola L.), and madder (Rubia tinctorum L.). These dyestuffs could be a threat to the use of the strontium isotopic system as a tracer for provenance studies of ancient wool, because they could potentially contaminate the signature of the textile's raw material. We present a novel method which allows for efficient removal of organic dyestuffs in wool prior to strontium isotopic analysis. Our method is based on an oxidative release of the dyestuff constituents by ammonium peroxodisulfate [(NH₄)₂S₂O₈] solution, combined with hydrofluoric acid (HF) that has shown to effectively remove/dissolve adhering dust micro-particles. Our multi-analytical results show that such a pretreatment is capable of removing >98% of the originally present organic dyestuffs without significantly destroying the wool structure. The strontium isotopic ratios of the residual wool fraction after the application of the pretreatment are sensitive to the origin and, therefore, can be used as tracers for the provenance of the raw material. We propose to apply this method to ancient wool textiles in which positive identification of organic dyestuff constituents by High Performance Liquid Chromatography (HPLC) was made.     

Gender roles, family, and drinking: women at the crossroad of drinking cultures

During the postwar era, extensive changes in family structure and gender roles have occurred in Western countries. The aim of this study was to see if processes of change and convergence in gender roles have led to new drinking patterns among Swedish women. Data were collected from a survey conducted in 1979 and replicated in 2003. For this study, data on aspects of drinking patterns and problems were combined with demographics and indicators of social situation. For one of the drinking pattern indicators, the assumption of convergence between the sexes was confirmed. Generally, though, differences in drinking patterns are at hand among both women and men in the same direction. Also, social background factors and demographics have weaker explanatory power today compared to the late 1970s.     

Incentives for the Iranian Chemical Boom: A Strategic Motivation or Applied Needs?

Iran's scientific impact has suffered hard from decades of imposed and self‐elected isolation from Western influences and international collaboration. Lately, however, the world has witnessed a remarkable increase in scientific publications from Iranian scientists in fields like nanotechnology; material science; and, perhaps most pronounced, chemistry. In this article, the factors behind this “publication boom” are discussed and examined together with an analysis of the coherence between the country's long‐term research strategies and short‐term needs in relation to present organic chemical research conducted at various Iranian universities and institutes. Organic chemistry is a keystone in important Iranian industrial sectors like the petroleum and agricultural industries, and also in the growing field of life science and pharmacology. The development of the petroleum industry and further refinement of raw oil into value‐added fine chemicals holds a key position in the reinforcement of the Iranian economy and labor market, thus motivating a governmental investment in chemical science and research. Taking an approach to find a reasonable balance with the impact from Western and Far Eastern scientific communities, Iran's own scientific roots and Islamic ideology could well be the success factor in becoming a worthy player on the international scientific arena.     

The Civil Intifada:1 The Power and Politics of the Palestinian Census

The Palestinian census of December 1997 holds both symbolic power, grounding a national identity within an intended modern, sovereign structure, and instrumental value, serving as a basis for social and economic development. Some scholars privilege the role of domination in this enumeration process, imposing official categorizations on people for the purpose of state control. However, in this article I argue that the census also has the potential to promote resistance, contingent upon the nature of the agency implementing the process and the historical circumstances of the community engaged in this exercise. In this case, Palestinian and Israeli governments compete over the parameters of this research implementation, particularly within the confines of Jerusalem, recognized by each as its (intended and existing) capital. Based on personal interviews, official documents and secondary sources, I describe this process in relation to other attempts to articulate a Palestinian community, and characterize the census within the context of a Palestinian political struggle for sovereignty against a dominant Israeli state.     

Detecting the medieval cod trade: a new method and first results

This paper explores the potential of stable isotope analysis to identify the approximate region of catch of cod by analysing bones from medieval settlements in northern and western Europe. It measures the δ¹³C and δ¹⁵N values of cod bone collagen from medieval control samples collected from sites around Arctic Norway, the North Sea, the Kattegat and the Baltic Sea. These data were considered likely to differ by region due to, for example, variation in the length of the food chain, water temperature and salinity. We find that geographical structuring is indeed evident, making it possible to identify bones from cod caught in distant waters. These results provide a new methodology for studying the growth of long-range trade in dried cod and the related expansion of fishing effort—important aspects of the development of commercialisation in medieval Europe. As a first test of the method, we analyse three collections of cod bones tentatively interpreted as imported dried fish based on a priori zooarchaeological criteria. The results tentatively suggest that cod were being transported or traded over very long distances since the end of the first millennium AD.