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21.
The geothermal area of Rio Valdez is located in the central portion of the Isla Grande de Tierra del Fuego (South Argentina), ten kilometers south of the southeastern sector of the Fagnano Lake. It consists of a series of thermal springs with low discharge rates (≤1 L/s) and temperatures in the range of 20–33°C distributed in an area of <1 km2. The thermal springs are characterized by alkaline, Na‐HCO3 waters with low salinity (0.53÷0.58 g/L), but relatively high fluoride contents (up to 19.4 mg/L). Their composition is the result of a slow circulation at depth, possibly through deep tectonic discontinuities connected with the Magallanes‐Fagnano Fault (MFF) system. According to geothermometric calculations, thermal waters reach temperatures in the range of 100–150°C and an almost complete chemical equilibrium with the alkali‐feldspars in the metavolcanic country rocks. The relatively high fluorine contents can be explained by the slow ascent and cooling of deep groundwaters followed by a progressive re‐equilibration with F‐bearing, hydrated Mg‐silicates, such as chlorite, which has been recognized as an abundant mineral in the metavolcanics of the Lemaire Formation and metapelites and metagraywackes of the Yahgán Formation. Finally, the isotopic composition of the investigated samples is consistent with the infiltration from local snow melting at altitudes in the range of 610–770 m asl. The comparison of our data with those collected in 1991 seems to suggest a possible progressive decline of the bulk thermal output in the near future. This possibility should be seriously considered before planning a potentially onerous exploitation of the resource. Presently, the only ways to exploit this geothermal resource by the population scattered in the area are the direct use of thermal waters and/or spa structures.  相似文献   
22.
In this essay, I explore the influence of Byzantine literature in the New World from a transatlantic perspective. Specifically, I examine the Scala paradisi of Juan Clímaco (570–649) as it is found in the Peregrinación de Bartolomé Lorenzo (1586) by the Jesuit José de Acosta (1539–1600), a text from the colonial period. Surprisingly, this text has received almost no critical attention. I focus on the study of the text (and the context in which it was produced and received), basing my analysis on a comparison of Acosta's text with other similar works. By using a comparative method, I explore the ideological and aesthetic tensions that underlie Acosta's work. Moreover, this analysis makes manifest the cultural and literary continuities (or traditions) and ruptures which, coming as much from the East as from the West of Europe, arrived in the Vice-regency of Peru in the second half of the sixteenth century.  相似文献   
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24.
Few medieval historians have turned their attention to the history of families in urban England. But the groundwork for such studies has been laid in previous scholarship on the merchant class, on women and work in towns, and on borough law and customs. Future studies, more specifically focused on families in towns, will draw upon a wide variety of sources including wills, property records, marriage litigation, coroner's rolls, poll taxes, borough customs, and, most importantly, borough plea rolls. These studies should allow us to explore how the special characteristics of the medieval urban environment – continual in-migration, economic opportunity, commercial and industrial diversity, extremes of wealth, high population density, and borough legal structures – affected family formation, life-cycle, demography, and domestic life in medieval towns.  相似文献   
25.
The present article is an analysis of the emergence of a new Uruguayan author, Armonía Somers (1914–94), as well as the publication in 1950 of her first novel, La mujer desnuda (The Naked Woman). It focuses on the Uruguayan social body of the 1950s, when society lived the paradox of recognizing women in its legal structure, but limiting them in the everyday social and cultural life. In this context, Somers's novel symbolically explores what I call the “crisis of feminine subjectivity,” through the creation of a woman who on her thirtieth birthday decided to throw away all the costumes and masks with which society and tradition imposed feminine roles and, naked, tried new ways of being, new subjectivities. Central to this study is an analysis of the different ways in which historical, social, and cultural demands produce certain kinds of human bodies, especially how they produce a woman's body. The specific argument that underlies this article is that the body inserts itself in conflictive and tense manners with the marks imposed on the genders. This article's theoretical contribution lies in its emphasis on the aesthetic and ethical ramifications of “feminine subjectivities” and “historical marked bodies” in a fiction that presents itself as a black box in which Somers finds herself as a woman who became a novelist in the 1950s and in which readers also find themselves questioning the persistence of gender marks on their own social bodies.  相似文献   
26.
The focus of the Poema de Fernán González falls squarely on its protagonist, the tenth-century Castilian warrior lord known to us today as Count Fernán González. Nevertheless, a third of the poem is devoted to the narration of events and prominent figures who preceded the Count. Most notable among these is Bernardo del Carpio, a fully fictitious epic hero who prefigures the Count in his willingness to fight for the independence of the Castilian nation. This analysis of the narration of Bernardo's heroic deeds against the invading army of Charlemagne is meant to clarify lingering doubts about the sources of the poem and their mode of transmission.  相似文献   
27.
We present the results of an exercise in Middle Palaeolithic palimpsest analysis geared toward the identification of human occupation episodes. It is based on a combined reading of the archaeosedimentary deposit and the archaeological record of Stratigraphic Unit IV from Abric del Pastor (Alcoy, Alicante, Spain), chronologically framed within MIS 4–5. A study of site formation processes coupled with archaeostratigraphic analysis of the lithic record incorporating Raw Material Units (RMU) and refits, as well as with combustion features and faunal remains enabled identification a minimum of 4 and a maximum of 6 human occupation episodes within lithostratigraphic units IVa, IVb and IVc. Through our data it reaches a high resolution temporal frame close to the ethnographic time scale, which constitutes a significant contribution for the knowledge of human occupations types and landscape use in the Mediterranean rim of the Iberian Peninsula during Middle Palaeolithic.  相似文献   
28.
A multivariate statistical technique, principal-component analysis, is used to interpret pollen assemblages from archaeological context in terms of paleoenvironmental information. The pollen samples originate from an archaeological site in northeastern Arizona (Canyon del Muerto) covering the period between AD 700 and AD 1300. Through the use of principal-component analysis the percentage constraint in the pollen counts is removed and the data set effectively reduced to groups of co-varying taxa. Once these groups are ecologically defined as to the environment they represent, their changes of dominance through time can be analysed. This study has shown a correlation between a population expansion in Canyon del Muerto (AD 1050–1150) and the dominance of upland forest types suggesting slightly cooler and/or wetter conditions. The pollen data compare well with the tree-ring indices for this region. Local disturbance is reflected in the record during the period of greatest population. A shift to a shrubland vegetation during the peak construction phase indicates the clearing of cottonwood, fir, spruce and pine (all found within the site) by local inhabitants. Thus, the palynological evidence suggests both cultural and climatic factors are involved in the explanation of pollen deposition.  相似文献   
29.
This study aims to present the results of the historical and statistical analysis carried out on the monitoring systems that control one of the most studied domes in the world: Santa Maria del Fiore in Florence, Italy. An accurate analysis of the dome crack widths and of its global displacements (horizontal and vertical), both considering the historical data and more recent data, has allowed detection of the static movements developed in the monument over time as well as in context of their relationship to environmental and seismic phenomena. Thanks to the large amount of measured data (from 1955 to 2010), some previous conclusions on the dome damage trend are updated herein. Moreover, in light of the experimental results, some issues on the dome stability—as the principal hypotheses advanced during centuries about the main cause of Brunelleschi’s dome crack pattern—are reconsidered, including the horizontal thrusts due to the dome’s self-weight characterized by Viviani in 1695 and Chiarugi in 1985, the differential settlement of pillars detailed by Cecchini in 1698, Ximenes in 1757 and Borga in 1975 and the influence of temperature variations investigated by Nervi in 1934. The final aim of this study is to show the great utility of modern and historical monitoring in setting up a reliable forecasting model of the monument.  相似文献   
30.
Many factors have been causally linked to the diversification of hunting during the European Palaeolithic: declining supplies of high‐ranked prey, considerable human demographic growth, reduced residential mobility, larger populations of ubiquitous small mammals and significant technological developments. However, small prey exploitation was not uniform: the European rabbit (Oryctolagus cuniculus ) is the most frequent species in the Upper Palaeolithic archaeological record of the Iberian Peninsula – south and Mediterranean area – and Southern France. This is demonstrated at Molí del Salt, an Upper Palaeolithic site located at Vimbodí (Catalonia, Spain), whose mammal fauna stands out for the predominance of rabbits [91% of minimum number of individuals (n = 136)]. We analysed the faunal remains from one level [Asup (c. 12 700–13 000 cal BP)] in order to identify the agent responsible for the faunal accumulation, and to reconstruct aspects of procurement and consumption that shed light on Palaeolithic subsistence strategies in the Northeast Iberian Peninsula. Our results indicate that human agency rather than carnivore activity was responsible for the bone accumulation at Molí del Salt. We identified all the stages in the consumption sequence from skinning to ingestion. We argue that the rabbits were mostly harvested during summer or winter or both seasons. Clearly, the European rabbit was a target species for the human groups which lived at Molí del Salt providing meat, and skin. Copyright © 2016 John Wiley & Sons, Ltd.  相似文献   
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