首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   444篇
  免费   28篇
  2024年   1篇
  2023年   8篇
  2022年   1篇
  2021年   3篇
  2020年   13篇
  2019年   16篇
  2018年   29篇
  2017年   45篇
  2016年   22篇
  2015年   23篇
  2014年   28篇
  2013年   109篇
  2012年   22篇
  2011年   15篇
  2010年   7篇
  2009年   21篇
  2008年   14篇
  2007年   8篇
  2006年   3篇
  2005年   6篇
  2004年   9篇
  2003年   11篇
  2002年   5篇
  2000年   4篇
  1999年   5篇
  1998年   1篇
  1997年   5篇
  1995年   4篇
  1994年   1篇
  1993年   5篇
  1992年   3篇
  1991年   1篇
  1990年   1篇
  1989年   3篇
  1987年   3篇
  1986年   2篇
  1985年   2篇
  1982年   2篇
  1981年   3篇
  1977年   1篇
  1976年   1篇
  1974年   1篇
  1971年   1篇
  1970年   1篇
  1968年   1篇
  1967年   1篇
  1948年   1篇
排序方式: 共有472条查询结果,搜索用时 15 毫秒
41.
Studies of old aerial photographs of the Bahrain burial mound fields have revealed that a small number of both Early Type (c. 2200–2050 BC) and Late Type (c. 2050–1750 BC) mounds are encircled by an outer ring wall, apparently marking out the mound as belonging to an elite. Four of these mounds have been excavated, and the results are presented. The geological differences between the Early Type and the Late Type mound landscapes are discussed.  相似文献   
42.
43.
44.
Gas chromatography (GC), GC-mass spectrometry (GC-MS) and GC-combustion-isotope ratio MS (GC-C-IRMS) analyses of absorbed and surface lipid residues preserved in potsherds were used to explore the extent of pig product processing exploitation in the later British Neolithic Grooved Ware tradition. Assessments were made regarding whether porcine lipids were associated with specific Grooved Ware traits, i.e. decoration, substyle, geographical area and type of site. Two hundred and twenty-two Grooved Ware potsherds were analysed, 70% of which contained lipid concentrations considered significant (>5 μg g−1). All the lipid residues were dominated by animal fats, although plant and beeswax were also detected in a small number of extracts. δ13C values of the major fatty acid components of degraded animal fats (C16:0 and C18:0) were determined for 126 extracts and used to assign ruminant or porcine origins to the residues; 16% of these were found to have a predominantly porcine isotope signature. Statistical associations with pig exploitation were shown to exist with substyle, geographical area and site type, whereas, no relationship was seen between decoration and the type of commodity processed. Intact triacylglycerols were preserved in 19% of the sherds; half of these had distributions consistent with the identifications based on δ13C values, the remainder differed either due to the presence of mixed commodities or because lower molecular weight homologues had been lost due to degradation. In addition to the detection of pig exploitation, results from lipid residue analysis showed a good correlation with faunal assemblages, suggesting that stable isotope analysis may be used as a proxy for animal exploitation at sites where bones have not survived.  相似文献   
45.
Pollen analyses of 13 archaeological sites in the Wadi Teshuinat area, in southwestern Fezzan, Libya, were synthesised to explore the potential contribution of palynological investigation to archaeological research in this area. During the Holocene, the sites were occupied by pre-Pastoral (hunter–gatherers) and Pastoral (pastoralists) cultures. Different pollen stratigraphies and floras characterised the diverse sites and the relevant cultural phases. Pollen data were reported by discussing the sites separately, and by combining them to interpret the regional data set. Emphasis was made on the anthropogenic pollen indicators and grasses, including large grass pollen grains (>40 μm), which were considered evidence of plant transport into the site. These were ethnobotanical markers, human-made evidence of plant harvesting by hunter–gatherers, or of animal breeding by pastoralists. The disappearance of some wild cereals was also observed, consistent with increasing climate dryness and land exploitation. Macroremains were used as a parallel tool to better understand plant exploitation in the region.  相似文献   
46.
The Mesolithic–Neolithic transition in north-west Europe has been described as rapid and uniform, entailing a swift shift from the use of marine and other wild resources to domesticated terrestrial resources. Here, we approach the when, what and how of this transition on a regional level, using empirical data from Öland, an island in the Baltic Sea off the Swedish east coast, and also monitor changes that occurred after the shift. Radiocarbon dating and stable carbon and nitrogen isotope analyses of bones and teeth from 123 human individuals, along with faunal isotope data from 27 species, applying to nine sites on Öland and covering a time span from the Mesolithic to the Roman Period, demonstrate a great diversity in food practices, mainly governed by culture and independent of climatic changes. There was a marked dietary shift during the second half of the third millennium from a mixed marine diet to the use of exclusively terrestrial resources, interpreted as marking the large-scale introduction of farming. Contrary to previous claims, this took place at the end of the Neolithic and not at the onset. Our data also show that culturally induced dietary transitions occurred continuously throughout prehistory. The availability of high-resolution data on various levels, from intra-individual to inter-population, makes stable isotope analysis a powerful tool for studying the evolution of food practices.  相似文献   
47.
48.
Biocultural patterns surrounding the emergence of agriculture from 11 sites in the central Tombigbee River valley (500–1200 AD), 50–100 km west of the emerging Moundville polity, suggest that while food production may have alleviated some ecological stress, it came at a cost. Markers of childhood arrest indicate earlier weaning, likely creating a cycle of rising fertility and competition, but surviving adults appear better off following intensification. Health disparities at farmsteads, including more prevalent anemia, growth defects, lower limb infections, and accidental trauma, are consistent with increasingly competing demands of domestic and corporate modes of production. Although these agricultural settlements in the hinterlands were not severely compromised as predicted by a strictly top down model of provisioning, health risks assumed by farmsteads may have resulted from provisioning to centers and/or corporate lineages while simultaneously mitigating larger risks (e.g., raiding). The greater health risks assumed by farmstead females suggest that they had less control over production and decision-making than women buried at centers, while height and upper body strength at mound centers, in addition to rare but extreme trauma, point to identities that were mapped not only onto the landscape, but onto the bodies of men and women occupying elite spaces.  相似文献   
49.
This article explores a classic dilemma concerning the extent to which anthropologist fieldworkers may influence their fieldwork hosts. This dilemma arose in the course of the author's research on kolam drawing practices among diaspora Tamils in the UK. Kolam constitute a popular visual practice among Tamils in India and Sri Lanka, but less so in the diaspora. However, the researcher's interest in kolam practice began to awaken an interest on the part of diaspora Tamils in the UK and affect the very practices researched. Does this constitute an intervention or might it be considered an appropriate form of inspiration? The article makes a contribution to the literature on ethics and on diasporic communities, whose members, although reticent to perpetuate practices that might upset their host society, may nevertheless defer to researchers with specialist knowledge of their homeland.  相似文献   
50.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号