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Stanisław Hałas 《Geochronometria》2012,39(3):158-166
In this paper I try to explain why the potassium-argon dating method was developed much later than other radiometric methods (like U-He and U-Pb), which were established at the beginning of the 20th century. In fact the pioneering paper by Aldrich and Nier (1948) was published 50 years after the discovery of polonium and radium, when nearly all the details concerning potassium isotopes and radioactivity of potassium-40 had been investigated. The role of Marie Curie’s concept of the nature of radioactivity in the discovery of the radioactivity of potassium is emphasized. 相似文献
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Alicia Muñoz 《Journal of Latin American Cultural Studies (Travesia)》2014,23(2):153-172
Doña Catalina de los Ríos y Lisperguer, known as ‘La Quintrala,’ a seventeenth-century aristocratic woman of mixed ancestry accused of torture, witchcraft, and murder, has persisted as a recurring figure in the Chilean imaginary. While literary representations of this figure have been well explored, this article contributes an examination of two visual narratives, paying particular attention to the manner in which genre and context influence the repurposing of this violent woman: the 1986 teleserie La Quintrala, produced by Chile's state-owned television station (TVN), and the Chilean newspaper Las últimas noticias's 2008 comic ‘La Quintrala y el Cristo de Mayo.’ The teleserie, a product of the Pinochet era, positions her as an antithesis to the ideal Chilean woman, simultaneously denying her agency and condemning her. The comic echoes the rhetoric of the Concertación governments as it prominently links La Quintrala's downfall and redemption to the genesis of modern Chile at the cost of her distinctive racial and gendered characteristics. Ultimately, each work employs the structure of confession to recall her crimes while rejecting the female agency and racially mixed heritage La Quintrala represents. 相似文献
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Hugo R. Oliveira Huw Jones Fiona Leigh Diane L. Lister Martin K. Jones Leonor Peña-Chocarro 《Archaeological and Anthropological Sciences》2011,3(4):327-341
Einkorn (Triticum monococcum L.) was one of the first cereals to be domesticated in the Old World ca. 10,000 years ago and to spread towards Europe and
North Africa. Its cultivation declined before the Iron Age and it remains today only as a relic crop in remote areas. To investigate
if the geographic distribution of genetic diversity in modern einkorn landrace accessions could be informative about the movement
of this crop during prehistory, we genotyped 50 accessions of einkorn from Europe, North Africa and the Near East. Using nuclear
and chloroplast microsatellites and clustering methods, we detected two main gene pools in einkorn. The distribution of these
lineages revealed differences between accessions from Morocco and the Iberian Peninsula from the rest of Europe and the Near
East and suggests different regional dynamics in the spread of this crop. 相似文献
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This article examines the “repertories” of family life of men of Afghan background in Odessa, Ukraine. It focuses on these men's intimate relationships with “local women” and challenges the notion that such unions merely offer a form of emotional escape for migrants or refugees far from home. Instead, we advance two arguments: first, that Afghan men in Ukraine form part of a complex transnational trading network, rather than a bounded group of refugees or migrants; second, that the cross-community relationships between Afghan men and “local women” play a significant role in the spatial anchoring and commercial fortunes of transnational Afghan traders in Ukraine. In the analysis of our ethnographic data, we consider the importance of the aftermath of the Cold War in shaping the diverse forms of family life within these trading networks. 相似文献
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Manuel Llorca-Jaña 《The Journal of imperial and commonwealth history》2013,41(2):215-238
In 1808, after the Portuguese royal family was forced to leave Portugal and move to Brazil, Brazilian ports were opened to British merchant houses, which were quick to open offices in the likes of Bahia and Rio de Janeiro. By 1810 there were probably over 200 British merchant houses operating in Brazil, but we know very little about them because most of their historical records have not survived. In addition, scholars have assumed that, on account of the dominant British economic power, the establishment of new mercantile houses in South America c. 1808–19 was an easy task. This assumption is challenged in this paper, which sheds new light on the activities of one of these British merchant houses, making use of a recently discovered business collection concerned with the activities of Wylie & Hancock, a Scottish house which operated in Brazil and the River Plate from 1808 to 1819. These papers also provide a unique insight into neglected topics such as: the nature of managerial mercantile organisations; what the economic actors at the time actually did and thought; and how strategic and tactical choices were reached. 相似文献
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Maria Dolors Garcia Ramon Kirsten Simonsen Dina Vaiou 《Gender, place and culture : a journal of feminist geography》2006,13(1):1-5
This editorial is seen as a comment on the on-going concern expressed in several Anglophone geography journals about the hegemony of Angloamerican production and its role in formulating the terms of international academic debate. We examine the extent to which Angloamerican dominance is equally true with regard to feminist geography, by looking at how/whether Gender, Place and Culture (GPC) deals with this bias. Finally we forward some suggestions for positive action towards enhancing the international character of the journal.
¿La hegemonía Anglosajona impregna Gender, Place and Culture?
Esta nota editorial trata de un tema que en la actualidad es motivo de preocupación en algunas revistas anglosajonas, la hegemonía de la producción anglosajona en geografía y su papel crucial en la formulación de los debates académicos internacionales. A través del anàlisis de la revista Gender Place and Culture, se discute cómo esta situación se da también en la geografía feminista. Finalmente, se proponen una serie de acciones positivas para potenciar el carácter internacional de la revista. 相似文献
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