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   15242篇
  免费   1308篇
  国内免费   34篇
耳鼻咽喉   163篇
儿科学   511篇
妇产科学   503篇
基础医学   2195篇
口腔科学   246篇
临床医学   1964篇
内科学   2894篇
皮肤病学   276篇
神经病学   1773篇
特种医学   254篇
外国民族医学   1篇
外科学   1398篇
综合类   128篇
一般理论   20篇
预防医学   1944篇
眼科学   203篇
药学   1012篇
中国医学   27篇
肿瘤学   1072篇
  2024年   26篇
  2023年   191篇
  2022年   311篇
  2021年   741篇
  2020年   461篇
  2019年   683篇
  2018年   714篇
  2017年   482篇
  2016年   504篇
  2015年   595篇
  2014年   765篇
  2013年   936篇
  2012年   1410篇
  2011年   1344篇
  2010年   734篇
  2009年   580篇
  2008年   954篇
  2007年   867篇
  2006年   763篇
  2005年   692篇
  2004年   600篇
  2003年   451篇
  2002年   387篇
  2001年   107篇
  2000年   92篇
  1999年   84篇
  1998年   71篇
  1997年   55篇
  1996年   49篇
  1995年   49篇
  1994年   47篇
  1993年   47篇
  1992年   68篇
  1991年   43篇
  1990年   64篇
  1989年   59篇
  1988年   55篇
  1987年   54篇
  1986年   31篇
  1985年   49篇
  1984年   46篇
  1983年   39篇
  1982年   25篇
  1980年   17篇
  1979年   16篇
  1978年   20篇
  1975年   16篇
  1973年   19篇
  1972年   16篇
  1971年   19篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Lesbian, gay, bisexual, transgender, queer and two-spirit plus (LGBTQ2S+) people have distinct healthcare needs that may be unaddressed in many undergraduate healthcare curricula. The Radiation Therapy Program (RADTH) at the University of Alberta underwent a review of the three-year didactic curriculum using an online survey. The survey sought to ascertain if, where and how topics related to LGBTQ2S + healthcare are taught. Results indicated that out of 10 RADTH program faculty respondents, three teach related topics. The total time dedicated within the three-year curriculum was approximately three and a half hours. Other findings showed that faculty are interested in receiving more education in this area and would favour discussions about how to incorporate these themes into appropriate courses. This preliminary investigation demonstrated that there has been some initial work in this area, but there is more to be done.  相似文献   
2.
Cancer Causes & Control - Congenital malformations are strong risk factors for childhood cancer. Our objective was to determine whether cancer survival differs by birth defect status among...  相似文献   
3.
4.
5.
6.
The present narrative review examines the scientific evidence of the biological mechanisms that may link periodontitis and diabetes, as a source of comorbidity. Publications regarding periodontitis and diabetes, in human, animals, and in vitro were screened for their relevance. Periodontal microbiome studies indicate a possible association between altered glucose metabolism in prediabetes and diabetes and changes in the periodontal microbiome. Coinciding with this, hyperglycemia enhances expression of pathogen receptors, which enhance host response to the dysbiotic microbiome. Hyperglycemia also promotes pro-inflammatory response independently or via the advanced glycation end product/receptor for advanced glycation end product pathway. These processes excite cellular tissue destruction functions, which further enhance pro-inflammatory cytokines expression and alteration in the RANKL/osteoprotegerin ratio, promoting formation and activation of osteoclasts. The evidence supports the role of several pathogenic mechanisms in the path of true causal comorbidity between poorly controlled diabetes and periodontitis. However, further research is needed to better understand these mechanisms and to explore other mechanisms.  相似文献   
7.
8.
9.
10.
Introduction: Current research suggests that pediatric stroke is associated with a reduction in intellectual functioning. However, less is known about academic achievement and the contribution of specific executive functions to math and literacy in this population. The current study investigates behavioral ratings of executive functioning and their relationship to math and spelling performance in children with a history of unilateral arterial ischemic stroke.

Method: Thirty-two pediatric patients with stroke (Mage = 9.5 ± 2.7 years) and 32 demographically equivalent, healthy controls were tested on standardized measures of arithmetic, spelling, and intelligence. Executive functioning data were collected via standardized parent questionnaire.

Results: Relative to controls, stroke participants demonstrated significantly poorer functioning in math, spelling, metacognition, and behavioral-regulation. Pencil and paper arithmetic was particularly challenging for the stroke group, with 40% of patients reaching levels of clinical impairment. Hierarchical regression in stroke participants further revealed that metacognition was a robust predictor of academic deficits. Stroke occurring in later childhood and affecting cortical and subcortical brain regions also presented as potential clinical risk factors.

Conclusions: Children with stroke were especially vulnerable to math achievement deficits. Metacognition made a substantial contribution to academic achievement abilities among stroke patients, and results underscore the importance of early metacognitive skills in the completion of schoolwork. Results also emphasize that pediatric stroke patients are a heterogeneous group with regard to functioning and that there is value in examining standard score distributions of clinical participant samples.  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