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101.
Mark Maslin Yadvinder Malhi Oliver Phillips Sharon Cowling 《Transactions (Institute of British Geographers : 1965)》2005,30(4):477-499
The aim of this paper is to investigate the longevity and diversity of the Amazonian rainforest and to assess its likely future. Palaeoclimate and palaeoecological records suggest that the Amazon rainforest originated in the late Cretaceous and has been a permanent feature of South America for at least the last 55 million years. The Amazon rainforest has survived the high temperatures of the Early Eocene climate optimum, the gradual Cenozoic cooling, and the drier and lower carbon dioxide levels of the Quaternary glacial periods. Two new theories for the great diversity of the Amazon rainforest are discussed – the canopy density hypothesis and the precessional-forced seasonality hypothesis. We suggest the Amazon rainforest should not be viewed as a geologically ephemeral feature of South America, but rather as a constant feature of the global Cenozoic biosphere. The forest is now, however, entering a set of climatic conditions with no past analogue. The predicted future hotter and more arid tropical climates may have a disastrous effect on the Amazon rainforest. 相似文献
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This study examined associations between public open space (POS) attributes and children’s use, and independent mobility to, POS in Auckland, New Zealand. Overall 240 children aged 9–12 years and their parents/caregivers participated. Data were sourced from child travel diaries and parent telephone interviews. The Public Open Spaces Attributable Index (POSAI) assessed POS quality and quantity. Associations were examined between age, sex, ethnicity, parental licence of freedom score, and POSAI with: (1) child trips to POS and (2) independently mobile trips to POS. Children made a total of 68 trips to POS over a seven-day period; 35 of these were independently mobile. Child ethnicity was related to child trips to POS. Independent trips to POS differed by ethnicity and parental licence of freedom. This research utilised a new tool, the POSAI, to examine associations of POS use and independent mobility in children living in urban neighbourhoods. 相似文献
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Oliver Jessop 《Medieval archaeology》2013,57(1):192-205
ARCHAEOLOGICALLY recovered arrowheads from the British Isles. dated to between the roth and 16th centuries are examined. Hie exisiting arrowhead typology in the London Museum Medieval Catalogue is assessed and a new typology consisting of 28 generic forms, and subdivided into functional groups, is suggested. 相似文献
108.
Hayley Saul Julie Wilson Carl P. Heron Aikaterini Glykou Sönke Hartz Oliver E. Craig 《Journal of archaeological science》2012
Starch granules are being successfully recovered from an increasing range of artefacts. Here we present the recovery of starches from carbonised ceramic ‘foodcrusts’ from late Mesolithic–early Neolithic residues at the site of Neustadt in northern Germany. A method for investigating background loading of residues with contaminant starches is proposed by comparing interior ‘foodcrusts’ versus exterior ‘sooting’, for the purposes of eliminating samples with insignificant quantities of grains from subsequent identification procedures. The classification of starches to plant taxon is traditionally achieved by manual observations and measurement of nominal and ratio morphological variables. Here, we present a method for the automated classification of granules, using software developed in-house. The results show that when multiple granules are considered, the species selected as modern reference examples can be classified to high levels of specificity. When applied to the archaeological samples we show that wild plant resources persist in importance across the transition to agriculture, with high proportions of granule forms consistent with acorn (Quercus sp.) occurring in all samples. Hazelnut (Corylus avellana) types are less well-represented suggesting it was not an important food in the context of pottery, and may have been over-represented in the repertoire of hunter–gatherer resources. Cereals are not represented in any of the samples, supporting the notion that their adoption may have been a slow process, occurring more gradually than for other domesticated foods, or that they were not initially processed in ceramic vessels. 相似文献
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Oliver Logan 《Modern Italy》2013,18(1):101-105
Franklin Hugh Adler, Italian Industrialists from Liberalism to Fascism. The Political Development of the Industrial Bourgeoisie, Cambridge University Press, Cambridge, 1996, xv + 458 pp., ISBN 0–521–433406–8 hbk, £40.00 Giuseppe Berta, Il governo degli interessi. Industriali, rappresentanza e politica nell'Italia del nord‐ovest 1906–1924, Marsilio, Venice, 1996, xv + 175 pp., ISBN 88–317–6342–3 pbk, 32,000 Lire Giorgio Fiocca, Storia della Confindustria 1900–1914, Marsilio, Venice, 1994, 266 pp., ISBN 88–317–5850–0 hbk, 70,000 Lire 相似文献
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Thomas Oliver Pryce Kalayar Myat Myat Htwe Myrto Georgakopoulou Tiffany Martin Enrique Vega Thilo Rehren Tin Tin Win Thu Thu Win Peter Petchey Jitlada Innanchai Baptiste Pradier 《Archaeological and Anthropological Sciences》2018,10(5):1087-1109
Myanmar has been notably underrepresented in recent studies of archaeometallurgy in Southeast Asia, despite its richness in both mineral and cultural resources and its potentially central role in long-distance exchange networks linking India, China and peninsular neighbours. Here, we present original analytical data on copper-base artefacts from several Bronze Age and Iron Age sites in Myanmar. Observed microstructures range from as-cast, worked, to fully annealed; compositions include leaded copper, low-tin to high-tin bronzes, and arsenical copper/bronze. Lead isotope analyses indicate that the metal originates from different geological sources, including several that match the lead isotope signatures of known prehistoric copper mines in Thailand and Laos. These archaeometallurgical data, including evidence for secondary copper-base production, more than double those currently available for Myanmar and document the presence of multiple local alloying and working traditions, perhaps chronologically differentiated, as well as identifying possible links to primary mineral sources across the region. Overall, this adds significant new information to the emerging picture of Southeast Asian prehistoric metallurgy at the crossroads of several major ancient cultures. 相似文献