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Miguel Ángel Rogerio-Candelera Liz Karen Herrera Ana Zélia Miller Leonardo García Sanjuán Coronada Mora Molina David W. Wheatley Ángel Justo Cesareo Saiz-Jimenez 《Journal of archaeological science》2013
The use of red pigments linked to burial practices is widely documented in the Iberian prehistoric record and very often it has been traditionally interpreted as a ritual practice entailing the utilisation of local raw materials (iron oxides). Some research works, nevertheless, have also detected the use of red pigments which can only be interpreted as allochthonous. The red pigments spread over a single inhumation in a monumental Megalithic tomb surrounding Valencina de la Concepción Copper Age settlement was studied by means of X-ray diffraction, field emission scanning electron microscopy with energy dispersive X-ray spectroscopy, X-ray microfluorescence, micro-Raman and Fourier transform infrared spectroscopies. This approach allowed characterising the red pigments as cinnabar, mixed with tiny amounts of iron oxides. The presence of cinnabar, a product that was necessarily imported, in a context of an exceptional set of grave goods, suggests that the use of cinnabar was linked not only to ritual but also to practices related to the display of social status. 相似文献
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Marcela A. Espinosa 《Alcheringa: An Australasian Journal of Paleontology》2013,37(3):373-386
Espinosa, M.A., Hassan, G.S. & Isla, F.I., September 2012. Diatom-inferred salinity changes in relation to Holocene sea-level fluctuations in estuarine environments of Argentina. Alcheringa 36, 377–391. ISSN 0311-5518. The analysis of diatoms from three sedimentary sequences in the Quequén Grande River basin (Buenos Aires province, Argentina) has allowed the reconstruction of local and regional palaeosalinity changes in relation to Holocene sea level fluctuations. An established diatom-based salinity transfer function is used in combination with autecological methods to reveal a maximum sea level between ca 7000 and 6000 14C years BP. This marine influence was recorded in deposits exposed 2 km and 12 km upstream, but not 32 km from the mouth. The fossil diatom assemblages are characteristic of an estuarine lagoon with maximum inferred salinities of 15‰. When the Holocene transgression began to flood the former valley (ca 7000 14C years BP), brackish lagoons evolved into estuarine settings in the lower valley, but shallow freshwater ponds with salinities <4‰ persisted at 32 km from the mouth. 相似文献
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Hotels and hotel chains are responding to globalization and increased competition through new marketing initiatives, employment practices, and restructuring decisions that are intensifying the work of cleaners. In this paper, we report on how such work intensification at two hotels in Montréal, Canada, is changing the nature of cleaners’ jobs. Specifically, we found that the numbers of operations to be completed, the numbers and weights of items to be cleaned, and the effort involved have all increased. “Flexible” employment relationships and outsourcing have also worsened cleaners’ workloads. In response to our research, the labour union representing cleaners has negotiated a lower number of room assignments per cleaner, as well as an improved way of taking into account the variability of work when determining the quota of rooms to be cleaned. Despite this, new marketing strategies continue to intensify work. We conclude that standards and regulation on a governmental level are a necessary complement to union actions. 相似文献
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Conditional Cash Transfer programmes aim to alleviate short‐term poverty through cash transfers to poor households, and to reduce longer‐term poverty through making these transfers conditional on household investment in the health and education of children. These programmes have become increasingly popular with institutions such as the World Bank. However, the need for conditionalities has been questioned on a number of levels, including its necessity: it has been suggested that the cash transfer in itself may be sufficient to secure most of the programme's wider aims. The example of Nicaragua supports this contention, demonstrating that only a small incentive is needed to bring the desired changes in the uptake of education, since this is something prized by the poor themselves. In health, the Nicaraguan case suggests that demand‐side initiatives might not be as important as supply‐side changes that improve the affordability and accessibility of services. The Nicaragua case also highlights the long‐term limitations of applying such programmes in countries with high levels of poverty and low economic growth. A gendered analysis of the programme highlights the fact that women ‘beneficiaries’ bear the economic and social cost of the programme without apparent benefit to themselves or even necessarily to the household in the short or longer term. 相似文献
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