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   511篇
  免费   23篇
  2023年   6篇
  2021年   8篇
  2020年   10篇
  2019年   15篇
  2018年   30篇
  2017年   25篇
  2016年   22篇
  2015年   11篇
  2014年   14篇
  2013年   123篇
  2012年   17篇
  2011年   14篇
  2010年   14篇
  2009年   18篇
  2008年   9篇
  2007年   12篇
  2006年   13篇
  2005年   4篇
  2004年   15篇
  2003年   5篇
  2002年   17篇
  2001年   6篇
  2000年   9篇
  1999年   7篇
  1998年   10篇
  1997年   11篇
  1996年   6篇
  1995年   4篇
  1994年   5篇
  1993年   3篇
  1992年   3篇
  1991年   4篇
  1989年   2篇
  1987年   4篇
  1986年   2篇
  1985年   4篇
  1984年   2篇
  1983年   5篇
  1982年   3篇
  1981年   4篇
  1980年   4篇
  1979年   2篇
  1978年   2篇
  1977年   6篇
  1976年   3篇
  1975年   4篇
  1974年   3篇
  1970年   2篇
  1954年   2篇
  1947年   2篇
排序方式: 共有534条查询结果,搜索用时 15 毫秒
21.
22.
23.
24.
Recently, there has been an effort within Islamic Studies to reassess the common belief that the so‐called ‘post‐classical’ era of Islamic history was characterized by intellectual stagnation and decline. The Mamluk era is one such period that has suffered from a dearth of scholarly attention resulting from outdated stereotypes. This article contributes to scholarship on this era through examining some poems by a late Mamluk poet, ?ā?isha al‐Bā?ūniyya (d. 1517). While much scholarship on al‐Bā?ūniyya focuses on her lyrical mystical verse, the poems studied here incorporate selective allusions to key Islamic sources in order to narrate a history of divine favor as the speaker imagines it. This innovative history expresses a poetics of devotion that focalizes Mu?ammad and the poet's own peers. The poems intertextually anchor this narrative in key Islamic sources, reflecting al‐Bā?ūniyya's extensive scholarly training. They constitute an unusual example of a female poet writing beyond the genres with which women's premodern poetry is conventionally associated. This poetry also represents a post‐classical contribution to Islamic literary and religious history. However, the criterion of originality should ultimately be reconsidered in evaluations of scholarly merit, and scholarship should pay more attention to continuities and intertextuality in texts.  相似文献   
25.
This article uses findings from a project on engagement with graduate outcomes across higher education institutions in New Zealand to produce a toolkit for implementing graduate attributes in geography curricula. Key facets include strong leadership; academic developers to facilitate conversations about graduate attributes and teaching towards them; ownership of the process by the teachers; the development of a contextualized set of graduate attributes for the geography degree; curriculum mapping to promote alignment between graduate attributes, learning outcomes and assessment tasks; incorporating high-impact educational experiences and signature pedagogies to foster graduate attributes; the use of evaluative data to inform continual enhancements; and allowing at least five years for curriculum renewal to occur.  相似文献   
26.
There is considerable literature suggesting that silica (opal) phytoliths cause dental enamel microwear in mammals. Much of this literature cites a single study from 1959 as evidence that silica phytoliths are harder than mammalian tooth enamel and so have the potential to cause dental microwear. No other studies using similar methodology have actually confirmed whether phytoliths are harder than dental enamel.  相似文献   
27.
Traditions and transitions in Korean bronze technology   总被引:1,自引:0,他引:1  
Metallurgical examination of Korean bronze artifacts shows that a technical tradition based on casting and use of leaded high-tin alloys was established in Korea at the early stages of bronze use. After the subsequent discovery of quenching methods that suppress formation of the brittle δ phase, new thermo-mechanical techniques were introduced between the 7th and 10th centuries AD. Lead-free alloys were used, and tin contents near that of the peritectic point in the Cu–Sn phase diagram were chosen. Leaded high tin alloys continued in use, but only in cast objects, and with significant composition variation. The unique conditions during the time of innovation suggest that the transition to new metallurgical techniques was gradually achieved through domestic technical innovation inspired by external influences.  相似文献   
28.
Metallurgical study of seven cast iron artifacts recovered from sites of the former Xiongnu (BC 3rd to AD 1st), Turk (AD 6th to 8th), Khitan (AD 10th to 12th), and Mongolian empires (AD 12th to 15th) shows that the earlier Xiongnu and Turk artifacts were made of cast iron alloys of near eutectic composition. The later Khitan and Mongol objects had greatly reduced carbon content in the range of ultrahigh carbon steel rather than cast iron, and contained more than 0.5 mass % silicon as an alloying element. Inclusions high in sulfur, phosphorus or silicon are also present. These differences suggest that Mongolia experienced a technical transition a few centuries before the establishment of the Mongolian empire, which is in agreement with some written accounts. The microstructures of the cast iron artifacts are compared with the related archaeological and documentary evidence. The results suggest that the use of fossil coal in smelting and the state policy of controlling iron production were the major factors responsible for the transition.  相似文献   
29.
In September 1988 archaeologists and students from the Program in Maritime History and Underwater Research at East Carolina University (PMHUR) identified the remains of an early shipwreck during a survey of the Western Ledge Reefs carried out for the Bermuda Maritime Museum (BMM). Structural material exposed at the wreck site proved to be a section of lower hull containing the keel, hull planking, frames, and a portion of the keelson that included a mast-step. In order to recover the archaeological record preserved at the site, the BMM applied for, and received, a licence from the Receiver of Wreck. As work at the site intensified, a prior claim to the wreck was discovered. Discovery of that claim ultimately led to a co-operative agreement between Brian Malpas, Donald Canton and the BMM that permitted on-site investigation to continue. During 1989 and 1990, the site was excavated by the Museum's underwater archaeological staff, the staffand students of the PMHUR and volunteers. In 1990, a comprehensive in situ map of the hull remains was completed and in accordance with the terms of an agreement between Malpas and Canton and the BMM, a team of archaeologists, students and volunteers raised the remains of the Western Ledge shipwreck in August 1991. Each recovered element of the wreck was transported to storage facilities at the museum and catalogued, cleaned, recorded and documented using techniques developed to record the Red Bay galleon. That work was completed in the autumn of 1991 and on 31st October 1991 the wreck structure was donated to the museum for study and possible display.  相似文献   
30.
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