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Old mining and smelting features in the Abu Gerida area have been studied using field observations, microscopy and SEM–EDS to detect the ores that were exploited in antiquity. There are two groups of shafts in the area. The first group encloses secondary copper minerals and is associated with glassy slags containing copper prills. The other group is associated with hematite that was extracted and transferred to a smelting station to the west of the mining site, where iron slags and charcoal fragments are found. These slags are composed mainly of wüstite, fayalite–kirschsteinite and traces of metallic iron. Pottery fragments from this area were dated to the Ptolemaic Period, which may be the age of iron exploitation. Copper might have been exploited earlier.  相似文献   
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Informal financial markets in developing countries, and their role in the development process itself, form a relatively neglected area when it comes to research and policy planning. It seems, however, that this may be due to inaccurate perceptions of the value and effectiveness of this sector, and of its relationship to formal sector financial institutions. This paper uses data from an extensive research project on informal financial markets in Bangladesh to examine the size of the informal market, its relationship to the formal financial sector and the part it plays in the process of development. The paper concludes that, in all these aspects, the informal financial markets are more important, more efficient and more equitable than is generally supposed.  相似文献   
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Opened in February 1923 to raise the status of academic psychiatry in the UK, the Maudsley Hospital struggled to secure grant income. Without a track record of published research and lacking internationally recognized clinicians, it failed to impress the British Medical Research Council. To challenge leading U.S. and German departments of neuropsychiatry, Edward Mapother, the medical superintendent, looked overseas for investment in an "institute of psychiatry." Intense lobbying and a modified strategy for research and training designed to meet the Rockefeller Foundation's prioritization of psychiatry and medical specialization ultimately led to a significant endowment. Alan Gregg and Daniel O'Brien at the Foundation played a pivotal role in re-defining the Maudsley's programs of research and teaching. Pressure on Mapother to attract funding was matched by that on administrators required to show that their philanthropy had yielded tangible gains in public health. While wealthy charities, like the Rockefeller, often had a vision of the direction that they wished to pull medical science, and they provided much needed income, the impact of their policy agenda was not without drawbacks. Institutions unwilling to embrace a charity's philosophy were unlikely to secure grants, while those that did might find themselves drawn into less optimal areas.  相似文献   
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The tensions from the Israeli occupation of Palestine reach around the globe and heated debates over the struggles of these two peoples are evident on U.S. college campuses. The power imbalance represented in the relationship between Palestinians and Israelis is replicated on college campuses. BDS (Boycott, Divestment, and Sanctions) is a response to this inequality, is a movement to end the occupation, and has raised the issue of normalization. Teaching about this conflict presents particular challenges for faculty who negotiate this highly contested issue in classrooms or campus communities, and intergroup dialogue is an important pedagogy that can be used. It is critical to address normalization in intergroup dialogue. We discuss examples and themes of normalization in intergroup dialogue, and present pedagogical and other strategies to prevent and address normalization in intergroup dialogue and in other similar intergroup contact approaches with Arab or Palestinian and Jewish or Israeli participants.  相似文献   
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