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   1046篇
  免费   76篇
  2023年   8篇
  2021年   7篇
  2020年   29篇
  2019年   29篇
  2018年   51篇
  2017年   41篇
  2016年   57篇
  2015年   29篇
  2014年   21篇
  2013年   312篇
  2012年   32篇
  2011年   34篇
  2010年   36篇
  2009年   33篇
  2008年   25篇
  2007年   19篇
  2006年   27篇
  2005年   11篇
  2004年   18篇
  2003年   10篇
  2002年   14篇
  2001年   9篇
  2000年   12篇
  1999年   18篇
  1998年   11篇
  1995年   13篇
  1994年   11篇
  1993年   15篇
  1992年   14篇
  1991年   5篇
  1988年   5篇
  1987年   5篇
  1986年   5篇
  1985年   6篇
  1984年   5篇
  1983年   9篇
  1982年   12篇
  1981年   13篇
  1980年   7篇
  1979年   7篇
  1978年   8篇
  1977年   7篇
  1976年   9篇
  1975年   5篇
  1974年   4篇
  1973年   5篇
  1972年   7篇
  1970年   4篇
  1967年   6篇
  1966年   7篇
排序方式: 共有1122条查询结果,搜索用时 15 毫秒
51.
52.
This article is a reconsideration of the Epistulae Austrasicae. We critique the widespread notion that the constituent letters were compiled by a courtier in the late sixth century at Metz as a book of models for use in the Austrasian chancellery. We argue instead that a monk from the monastery of Lorsch assembled the letters in the early ninth century from individual exemplars and groupings that he found in archives at Trier. We conclude by outlining some implications of this rereading for the edition and interpretation of the letters as sources for the Merovingian period, and point out some avenues for future research on their reception in the Carolingian period.  相似文献   
53.
Research projects undertaken in the Cantabrian region since 1980 have produced new, high-quality information about the neolithisation process(es) in this area. It is now necessary to review this archaeological information and test the main hypotheses put forward to explain it. This paper presents an update on the archaeological evidence (sites, chronological dates, archaeozoological, archaeobotanical and technological information) for the early Neolithic in the Cantabrian region. It summarizes recent research on neolithisation in the region, and assesses the impact of this process during the early Neolithic, and its later consolidation. Although the available information is still incomplete, it is now possible to identify the focal point of the introduction of elements characteristic of the Neolithic way of life in the region. Current evidence suggests that it is in the eastern sector, where the earliest arrival of domesticates and new technologies such as pottery has been attested. The existence of continuities—such as sustained reliance on hunting and gathering and the coexistence of old and new funerary rites—suggests the persistence of native populations, which gradually participated in the neolithisation process after an ‘availability phase’.  相似文献   
54.
55.
The oldest extant musical instruments in the world are stone chimes. This music was created by the ‘eight tones’ that could be produced by these ‘stone’ voices. Although many of these stone chimes have been unearthed from sites predating the Spring and Autumn Period and the Warring States Period in China, their discussion in archaeological reports is usually not very thorough. In this paper, the ancient and modern samples are analysed from the point of view of lithology. The aim is to explore how the ancients chose to make these stones, and to check that the type of stone from which these ancient Chinese stone chimes are made is actually those recorded in previous studies. The results show that most of the ancient stone chimes in China are made of limestone. These chimes required a material with a single, homogeneous and compact mineral composition. Lingbi chimes (a kind of ‘lithophone’ produced in Lingbi county, China, are pure in composition and have a fine microcrystalline structure, which is the best choice for making stone chimes. This paper makes a systematic study of the lithology of Chinese stone chimes. The results supplement a significant lacuna in the study of ‘lithophone’ and ancient stone instruments both in China and on a more global scale.  相似文献   
56.
This case study was the first of its kind, where neutron computed tomography (CT) was applied to a wrapped mummified animal. Conventional X‐ray CT was also used to allow for meaningful comparison, and complementary data for a comprehensive investigation. Previous applications of both techniques are limited to metallic objects, such as bronze Buddhas. The mummy used in this study (IA.2402) is dated between the Third Intermediate Period (1069–664 bce ) to Late Period (664–332 bce ) according to the wrapping style, and was originally believed to contain a complete skeleton of a feline. However, precise date and provenance were unknown. Our results prove the presence of only partial juvenile feline remains, and provide a date range for artefact creation (900–804 bce ± 30) and alteration (367–204 bce ± 30). Therefore, this study implements an established imaging technique (neutron CT) in a novel way, while preserving and conserving the intrinsic value of the artefact through non‐destructive investigation.  相似文献   
57.
58.
59.
This work analyses the main Spanish legislative and urban planning instruments, highlighting some of the most important structural problems of the current Spanish urban realities. The survey on legislation runs from the first Land Use Act of 1956 to the decentralization of the administration and the culmination of the transfer processes to the respective Spanish regions. Later, we study the complete well-structured hierarchy of urban planning instruments in use at present. Finally, we analyse how these and other factors have an influence on the capacity to control housing prices and on a lack of sustainability characterized by the excessive urbanizing use of the land.  相似文献   
60.
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