全文获取类型
| 收费全文 | 21199篇 |
| 免费 | 127篇 |
| 国内免费 | 10篇 |
专业分类
| 教育 | 15741篇 |
| 科学研究 | 2244篇 |
| 各国文化 | 71篇 |
| 体育 | 1004篇 |
| 综合类 | 4篇 |
| 文化理论 | 445篇 |
| 信息传播 | 1827篇 |
出版年
| 2022年 | 61篇 |
| 2021年 | 116篇 |
| 2020年 | 155篇 |
| 2019年 | 228篇 |
| 2018年 | 2448篇 |
| 2017年 | 2338篇 |
| 2016年 | 1850篇 |
| 2015年 | 307篇 |
| 2014年 | 431篇 |
| 2013年 | 1841篇 |
| 2012年 | 454篇 |
| 2011年 | 940篇 |
| 2010年 | 1042篇 |
| 2009年 | 641篇 |
| 2008年 | 883篇 |
| 2007年 | 1333篇 |
| 2006年 | 273篇 |
| 2005年 | 561篇 |
| 2004年 | 631篇 |
| 2003年 | 498篇 |
| 2002年 | 285篇 |
| 2001年 | 245篇 |
| 2000年 | 248篇 |
| 1999年 | 210篇 |
| 1998年 | 117篇 |
| 1997年 | 172篇 |
| 1996年 | 118篇 |
| 1995年 | 95篇 |
| 1994年 | 113篇 |
| 1993年 | 89篇 |
| 1992年 | 184篇 |
| 1991年 | 146篇 |
| 1990年 | 135篇 |
| 1989年 | 164篇 |
| 1988年 | 133篇 |
| 1987年 | 121篇 |
| 1986年 | 133篇 |
| 1985年 | 119篇 |
| 1984年 | 90篇 |
| 1983年 | 102篇 |
| 1982年 | 70篇 |
| 1981年 | 61篇 |
| 1980年 | 64篇 |
| 1979年 | 111篇 |
| 1978年 | 71篇 |
| 1977年 | 65篇 |
| 1976年 | 57篇 |
| 1975年 | 54篇 |
| 1974年 | 62篇 |
| 1973年 | 56篇 |
排序方式： 共有10000条查询结果，搜索用时 78 毫秒
101.
Sumayya Ahmed 《Archival Science》2018,18(3):225-240
The turn to oral history in Qatar and the Arabian (also known as Persian) Gulf is not a rejection of traditional archival authority as has been the case in other parts of the world. In the Gulf, oral history has been embraced out of a desire to fill the silences of the largely unwritten record attributable to previous low levels of literacy and strong oral traditions in the region. Today, oral history is seen as the best method to capture details about traditional ways of life during the pre-oil era. After discussing archival concerns about the evidentiary nature of oral histories, this paper explores how it has come to be a crucial documentation tool in the Gulf, adapted to the specific nation building and cultural heritage priorities of the region. 相似文献
102.
103.
104.
105.
106.
B. G. C. Maisonneuve T. Honegger J. Cordeiro O. Lecarme T. Thiry D. Fuard K. Berton E. Picard M. Zelsmann D. Peyrade 《Biomicrofluidics》2016,10(2)
With the rise of microfluidics for the past decade, there has come an ever more pressing need for a low-cost and rapid prototyping technology, especially for research and education purposes. In this article, we report a rapid prototyping process of chromed masks for various microfluidic applications. The process takes place out of a clean room, uses a commercially available video-projector, and can be completed in less than half an hour. We quantify the ranges of fields of view and of resolutions accessible through this video-projection system and report the fabrication of critical microfluidic components (junctions, straight channels, and curved channels). To exemplify the process, three common devices are produced using this method: a droplet generation device, a gradient generation device, and a neuro-engineering oriented device. The neuro-engineering oriented device is a compartmentalized microfluidic chip, and therefore, required the production and the precise alignment of two different masks. 相似文献
107.
The authors examined the relationship between stress, adaptive coping, and life satisfaction among college students who reported having a friend or family member with eating disorder symptomatology. A hierarchical regression confirmed the study's hypotheses. Higher stress was linked with less life satisfaction. After stress was controlled, plan coping had a beneficial influence on life satisfaction. College counselors can use these findings when choosing interventions for clients who are close to someone with an eating disorder. 相似文献
108.
109.
110.