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   145篇
  免费   2篇
教育   114篇
科学研究   18篇
各国文化   1篇
体育   5篇
文化理论   1篇
信息传播   8篇
  2020年   3篇
  2019年   7篇
  2018年   4篇
  2017年   8篇
  2016年   4篇
  2015年   3篇
  2014年   6篇
  2013年   24篇
  2012年   5篇
  2011年   2篇
  2010年   2篇
  2008年   4篇
  2007年   2篇
  2006年   2篇
  2005年   3篇
  2003年   3篇
  2002年   3篇
  1999年   1篇
  1995年   1篇
  1994年   2篇
  1991年   4篇
  1989年   1篇
  1988年   2篇
  1986年   2篇
  1985年   1篇
  1984年   1篇
  1983年   3篇
  1982年   1篇
  1981年   2篇
  1980年   2篇
  1979年   1篇
  1977年   1篇
  1974年   1篇
  1973年   2篇
  1970年   1篇
  1969年   3篇
  1967年   1篇
  1965年   2篇
  1955年   4篇
  1954年   6篇
  1946年   2篇
  1935年   1篇
  1934年   2篇
  1924年   2篇
  1919年   1篇
  1915年   2篇
  1866年   1篇
  1845年   2篇
  1844年   1篇
  1843年   1篇
排序方式: 共有147条查询结果,搜索用时 296 毫秒
91.
Foreign language (FL) and English as a Second Language (ESL) teaching present considerable challenges in the rural U.S. South. Local language ideologies, budgetary considerations, and challenges in other curricular areas (e.g., math and science) lead to marginalizing both FL and ESL in schools. This article examines the personal and professional trajectories of in-service language teachers in K–12 settings in the state of Mississippi to better understand how participants conceptualize their practice and their roles in schools. By analyzing the interview discourse of nine teachers, we found that both ESL and FL teachers positioned themselves against dominant ideologies and educational policies and constructed themselves as agents of change in the classroom, school, and community at large. This study contributes to the argument for integrating FL and ESL in rural areas, where both groups need support, and provides suggestions for ESL-FL teacher collaboration in rural schools.  相似文献   
92.
93.
Learning Environments Research - Higher education faces several challenges including both increased student diversity and the use of technologies. The flipped classroom approach has been proposed...  相似文献   
94.
This article explores the historical roots of Ernest Boyer's impact on Christian higher education in the United States. Boyer's stints as a student at two Christian colleges (Messiah College in Pennsylvania and Greenville College in Illinois) and his first faculty and administrative posts at Upland College in California were significant influences in the development of his vision for the Christian college—a vision that led to greater legitimacy and credibility in the landscape of American higher education. Ernest Boyer's innovative, yet historic understanding of the distinctives of Christian higher education contributed to the successful accreditation process of nearly one hundred small, private institutions.  相似文献   
95.
96.
97.
98.

Introduction

Sparse data are available about the effect of therapy methods on antibody levels in patients with liver failure. The aim of this study was to determine serum immunoglobulin concentrations in patients with chronic hepatic failure (CHF), acute- (ALF), or acute-on-chronic liver failure (ACLF) and to evaluate the impact of MARS treatment or liver transplantation (LT) on antibody levels.

Materials and methods

We followed ten patients with ALF, twelve with ACLF and 18 with CHF. Eight patients with ALF and seven with ACLF underwent MARS therapy, whereas the rest received LT. 13 healthy volunteers served as controls. Serum antibody concentrations were measured using ELISA-technique.

Results

Median serum levels of IgA, IgG and IgM were significantly increased in patients with CHF compared to ALF or controls (P < 0.02, P < 0.01, and P < 0.01). IgM and IgG concentrations were also significantly elevated in patients with CHF compared to ACLF (IgM, 3.7 vs. 1 g/L, P < 0.001; IgG, 8.7 vs. 3.1 g/L, P = 0.004). Immediately after LT a significant decrease of IgA (6.9 vs. 3.1 g/L, P = 0.004), IgG (8.7 vs. 5.1 g/L, P = 0.02) and IgM (3.7 vs. 1.8 g/L, P = 0.001) was detected in patients with CHF and antibody levels further decreased the days after LT reaching levels comparable to healthy individuals. MARS treatment had no apparent effect on the immunoglobulin profile in patients with ALF or ACLF.

Conclusion

We provide evidence that LT reverses hypergammaglobulinemia in patients suffering from CHF within one day, which could be explained to a reconstituted hepatic antibody clearance, whereas MARS treatment has no immediate effect on immunoglobulin levels.Key words: antibodies, immunoglobulins, liver failure, liver transplantation, artificial liver support system, molecular adsorbent recirculating system  相似文献   
99.
100.
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