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   5601篇
  免费   211篇
  2020年   74篇
  2019年   85篇
  2018年   129篇
  2017年   137篇
  2016年   155篇
  2015年   123篇
  2014年   110篇
  2013年   1507篇
  2012年   185篇
  2011年   172篇
  2010年   156篇
  2009年   191篇
  2008年   200篇
  2007年   165篇
  2006年   130篇
  2005年   77篇
  2004年   72篇
  2003年   70篇
  2002年   65篇
  2001年   105篇
  2000年   74篇
  1999年   80篇
  1998年   48篇
  1997年   40篇
  1996年   61篇
  1995年   58篇
  1994年   46篇
  1993年   61篇
  1992年   42篇
  1991年   53篇
  1990年   35篇
  1989年   46篇
  1988年   48篇
  1987年   57篇
  1986年   54篇
  1985年   56篇
  1984年   62篇
  1983年   73篇
  1982年   63篇
  1981年   56篇
  1980年   58篇
  1979年   49篇
  1978年   61篇
  1977年   55篇
  1976年   66篇
  1975年   42篇
  1973年   39篇
  1972年   36篇
  1971年   35篇
  1969年   35篇
排序方式: 共有5812条查询结果,搜索用时 15 毫秒
101.
102.
103.
104.
Ties between the Nabataean area of northwestern Arabia and southern Palestine, and the northeastern portion of the Arabian peninsula have been discussed for some years. The material evidence of such ties is meagre, but nonetheless important. Two Nabataean coins from Thaj and one from Qatif are presented here, along with a painted Nabataean sherd from Thaj. Their implications are treated briefly.  相似文献   
105.
106.
Shrestha NR  Patterson JG 《对极》1990,22(2):121-155
"Malthusians maintain that rapid population growth aggravates poverty, while Marxists contend that social formations determine its nature and extent. Each perspective is incomplete, however, since it ignores the insights of the other. Latin American states, characterized by dependent capitalism formations and dominated by ruling elites, are generally incapable of solving the problems of population and poverty. Since population growth under dependent capitalism weakens labor's bargaining position against capital, reduced population growth is emphasized as a labor empowerment strategy the poor can implement on their own to improve their socioeconomic conditions."  相似文献   
107.
108.
109.
The chemical and mineralogical characterization of seven ceramic fragments produced within Tiwanaku state (c.500–1000 ce ) is reported. The instrumental techniques used included X‐ray elemental and mineralogical chemical analysis, Raman spectroscopy, and scanning and light microscopy. The results indicate there are several clay types, although they show similarities, such as the use of a plant‐based temper. The red colour of the decoration is hematite, and manganese oxides such as jacobsite are present in the black. The white colour is a mixture of gypsum and clay, and the orange is a mixture of hematite and clay. The use of colours, the quality of the clays and the temperatures reached during pottery firing point to expertise in ceramic production and to complex decision‐making processes. The multi‐elemental archaeometric approach documented here could become an important tool to shed a light on ancient ceramic technology and the internal variance of Tiwanaku pottery.  相似文献   
110.
Non‐invasive materials characterisation of reconstructed statues of Emperor Qin Shihuang's Terracotta Army has revealed distinct micro‐geochemical patterning within the clay paste used in their manufacture. The significance of this is explored in terms of the production sequence, logistics and supply‐chain management involved in the construction of this enormous funerary assemblage. Of particular interest is a compositional distinction between figures marked with the names ‘Gong’ (宫) and ‘Xianyang’ (咸阳). These seem to represent the products of two workshops involved in the supply of ceramic objects for this ambitious, large‐scale building project undertaken by the Qin Empire during the third century bce .  相似文献   
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