全文获取类型
收费全文 | 11964篇 |
免费 | 549篇 |
出版年
2020年 | 177篇 |
2019年 | 245篇 |
2018年 | 332篇 |
2017年 | 334篇 |
2016年 | 394篇 |
2015年 | 263篇 |
2014年 | 228篇 |
2013年 | 3308篇 |
2012年 | 313篇 |
2011年 | 346篇 |
2010年 | 341篇 |
2009年 | 342篇 |
2008年 | 306篇 |
2007年 | 291篇 |
2006年 | 252篇 |
2005年 | 177篇 |
2004年 | 158篇 |
2003年 | 163篇 |
2002年 | 171篇 |
2001年 | 193篇 |
2000年 | 167篇 |
1999年 | 192篇 |
1998年 | 146篇 |
1997年 | 127篇 |
1996年 | 136篇 |
1995年 | 125篇 |
1994年 | 108篇 |
1993年 | 125篇 |
1992年 | 119篇 |
1991年 | 90篇 |
1990年 | 91篇 |
1989年 | 106篇 |
1988年 | 97篇 |
1987年 | 110篇 |
1986年 | 107篇 |
1985年 | 139篇 |
1984年 | 165篇 |
1983年 | 166篇 |
1982年 | 131篇 |
1981年 | 129篇 |
1980年 | 144篇 |
1979年 | 130篇 |
1978年 | 137篇 |
1977年 | 122篇 |
1976年 | 127篇 |
1975年 | 141篇 |
1974年 | 84篇 |
1973年 | 77篇 |
1972年 | 71篇 |
1971年 | 66篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
951.
952.
953.
Daniela Osorio José M. Capriles Paula C. Ugalde Katherine A. Herrera Marcela Sepúlveda Eugenia M. Gayo 《Journal of Field Archaeology》2017,42(3):228-240
The high Andes of western South America feature extreme ecological conditions that impose important physiological constraints on humans including high-elevation hypoxia and cold stress. This leads to questions regarding how these environments were colonized by the first waves of humans that reached them during the late Pleistocene. Based on previous research, and aided by human behavioral ecology principles, we assess hunter-gatherer behavioral strategies in the Andean highlands during the late Pleistocene and early Holocene. Specifically, we formulate three mobility strategies and their archaeological expectations and test these using technological and subsistence evidence from the six earliest well-dated highland sites in northern Chile. Our results suggest that all of the studied sites were temporarily occupied for hunting, processing animals, and toolkit maintenance. The sites also exhibit shared technological features within a curatorial strategy albeit with different occupation intensities. From this evidence, we infer that the initial occupations of the highlands were logistical and probably facilitated by increased local resource availability during a period of environmental amelioration. 相似文献
954.
Policies governing the sale of raw milk—making the sales of raw milk more permissive—are gaining traction on the legislative agendas of dozens of states. This paper examines one contributor to this movement on the policy agenda: the role of competitive framing. By combining theoretical approaches from policy studies and political psychology theories of competitive framing, we offer evidence supporting the recent relative success of raw milk activists in several state legislatures. Using an Internet survey‐based experiment with a sample size of 1,630 respondents from seven Midwestern states, we show that a frame emphasizing consumer choice and food freedom is more effective than the frame that dominates among the policy establishment, that emphasizing public health risks. This is true in both one‐sided and competitive framing contexts. We further show that those previously aware of this issue were less influenced by the public health frame than those naïve to the issue. Our results suggest that the pro‐raw milk movement may be making strides on the state policy agenda because their frames are more resonant among the public. We also highlight the advantages gained from considering psychological and policy processes simultaneously to understand policy change. 相似文献
955.
Luisa M. Paternicò 《东方研究杂志》2017,65(1):87-121
The publication of the Confucius Sinarum Philosophus in Paris in 1687 represented the apex of the syncretic effort between Confucianism and Catholicism started by Matteo Ricci more than one century before. The present study draws attention to the heart of the text, which is the translation of three Confucian Classics: Daxue (The Great Learning), Lunyu (The Analects) and Zhongyong (The Doctrine of the Mean), where the contribution of Prospero Intorcetta (1625–1696) appears to be predominant.
This article will firstly offer an updated biography of Intorcetta and his mission to Europe. Secondly, it will summarize the long process that led to the publication of the Confucius Sinarum Philosophus. Finally, through a comparative analysis between the former translations and those published in the Confucius Sinarum Philosophus, this study will attempt to extrapolate and determine the contribution of Intorcetta, focusing especially on the way some key concepts of the Confucian philosophy and of the traditional Chinese thinking in general were rendered. 相似文献
956.
1500 Years of Pottery: Neutron Activation Analysis of Northern Chilean Domestic Ceramics from Caleta Vitor and Clay Samples from Nearby Valley,Coast and Highland Contexts
下载免费PDF全文
![点击此处可从《Archaeometry》网站下载免费的PDF全文](/ch/ext_images/free.gif)
C. A. Bland A. L. Roberts R. S. Popelka‐Filcoff C. M. Santoro C. Carter J. W. Bennett A. Stopic 《Archaeometry》2017,59(5):815-833
This paper presents the findings arising from neutron activation analysis (NAA) of northern Chilean domestic ceramic samples from Caleta Vitor (n = 38) and clay samples (n = 15) from nearby valley, coast and highland contexts. This study presents the first NAA data set of ceramics spanning a temporal period of 1500 years (c.2000 to c.476 bp ) from the Vitor Valley as well as the first attempt to use NAA to characterize potential clay sources in the region. On the basis of this study, we argue that the majority of domestic ceramics from Caleta Vitor share compositional similarities with clay samples collected from nearby valleys, allowing us to infer that the Caleta Vitor populations primarily procured their clay for domestic ceramics from local sources throughout a 1500‐year period. Thus, despite the fact that there were inter‐regional interactions during this period that included the influence of powerful Andean polities, it would appear that domestic ceramics continued to be produced locally, and by implication it can be argued that such interactions did not substantially affect this sphere of material culture production. Further, the apparent continuities in domestic ceramic production allow us to reflect on local decision‐making processes throughout the cultural phases considered in this research. 相似文献
957.
Isotopic, EPR and petrographic studies aimed at establishing the provenance of sculptural bigio antico are reported, including 18 possible quarry sites and 21 ancient sculptures. The results demonstrate that the Belevi quarry, north‐east of Ephesos, above the more famous white marble quarry, was the major source of this marble. Nineteen artefacts belong to Belevi, whereas the precise origin of the remaining two is unknown, but must probably be found within the same area. The peculiar distribution of δ13C values both for Belevi and artefacts was crucial for inferring the correct provenance, subsequently confirmed by additional analytical and petrographic data. 相似文献
958.
First Evidence Of The Use Of Freshwater Pearls As A Cosmetic In Ancient China: Analysis Of White Makeup Powder From A Northern Song Dynasty Lv Tomb (Lantian,Shaanxi Province,China)
下载免费PDF全文
![点击此处可从《Archaeometry》网站下载免费的PDF全文](/ch/ext_images/free.gif)
The Lv family tombs in Lantian, Shaanxi Province are one of the most important archaeological sites of China in recent years, providing numerous objects and a wealth of information for the study of the history of the Northern Song dynasty. There were a large number of exquisite cultural relics unearthed from the tombs, including one porcelain box containing white powder, which was identified as women's makeup. The phase composition, microstructure, thermal properties and characteristics of the trace elements in the unearthed white cosmetic powder were comprehensively analysed by X‐ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry – thermogravimetry (DSC–TG), Fourier transform infrared (FT–IR) microscopy and inductively coupled plasma atomic emission spectroscopy (ICP–AES). The white makeup powder was determined to be a product made from high‐quality freshwater pearls. These results, for the first time, showed evidence that freshwater pearl powder was used as a cosmetic in ancient China using archaeological objects, providing scientific evidence and new clues to enrich and expand research into the ancient Chinese cosmetic materials. 相似文献
959.
960.
Fuel For Lamps: Organic Residues Preserved in Iron Age Lamps Excavated at the Site of Sahab in Jordan
下载免费PDF全文
![点击此处可从《Archaeometry》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Five Iron Age ceramic lamps from a tomb at the site of Sahab in the south‐eastern part of central Jordan were analysed using gas chromatography – mass spectrometry (GC–MS). The results of this study provide data on the type of fuel used in three of these lamps. The study proposes that animal fat, possibly of ruminant origin, was used in three Early Iron Age II lamps. The material used in the other two Iron Age I lamps could not be determined due to the absence of diagnostic biomarkers. The data obtained from the lamps can be put in conjunction with the archaeological evidence on the availability of domestic animals and, most probably, use of their products at the site of Sahab during the Iron Age. 相似文献