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   680305篇
  免费   34532篇
  国内免费   835篇
耳鼻咽喉   8725篇
儿科学   21482篇
妇产科学   16121篇
基础医学   113950篇
口腔科学   17523篇
临床医学   57372篇
内科学   128133篇
皮肤病学   15933篇
神经病学   46534篇
特种医学   23364篇
外国民族医学   54篇
外科学   95816篇
综合类   8335篇
现状与发展   2篇
一般理论   130篇
预防医学   56722篇
眼科学   15919篇
药学   53120篇
  1篇
中国医学   1716篇
肿瘤学   34720篇
  2021年   6394篇
  2019年   6606篇
  2018年   10419篇
  2017年   7099篇
  2016年   7820篇
  2015年   8668篇
  2014年   10796篇
  2013年   16030篇
  2012年   25033篇
  2011年   27392篇
  2010年   14936篇
  2009年   12449篇
  2008年   23765篇
  2007年   26042篇
  2006年   25202篇
  2005年   24238篇
  2004年   23218篇
  2003年   22178篇
  2002年   21360篇
  2001年   26724篇
  2000年   27658篇
  1999年   22510篇
  1998年   5920篇
  1997年   4795篇
  1996年   4856篇
  1992年   16357篇
  1991年   17593篇
  1990年   17681篇
  1989年   17070篇
  1988年   15715篇
  1987年   15500篇
  1986年   14533篇
  1985年   13980篇
  1984年   10334篇
  1983年   8810篇
  1982年   4602篇
  1979年   9984篇
  1978年   7070篇
  1977年   5834篇
  1976年   6162篇
  1975年   7384篇
  1974年   8423篇
  1973年   8176篇
  1972年   7576篇
  1971年   7241篇
  1970年   6770篇
  1969年   6385篇
  1968年   6141篇
  1967年   5490篇
  1966年   4749篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
Molnár  B.  Aroca  S.  Dobos  A.  Orbán  K.  Szabó  J.  Windisch  P.  Stähli  A.  Sculean  A. 《Clinical oral investigations》2022,26(12):7135-7142
Clinical Oral Investigations - To evaluate t he long-term outcomes following treatment of RT 1 multiple adjacent gingival recessions (MAGR) using the modified coronally advanced tunnel (MCAT) with...  相似文献   
2.
Journal of Behavioral Medicine - Evidence supports the use of graphic warnings to educate the public about the health harms of smoking and suggests warnings eliciting negative emotional responses...  相似文献   
3.
The adrenal cortex gives rise to a biologically heterogenous group of neoplasms, each with a distinct morphology, antigen expression and molecular profile. Adrenal cortical adenomas have excellent prognosis and are usually cured by surgical resection alone, while adrenal cortical carcinomas are very aggressive tumors with a poor prognosis regardless of therapy. These tumors are rare and often challenging for a pathologist to diagnose, as significant overlap exists between benign and malignant lesions in some cases. In this review, we attempt to summarize most important histologic and clinical features of adrenal cortical adenomas and carcinomas, clarify the use of different grading systems, the use of special stains and the differential diagnosis for practicing pathologists. Most relevant hereditary syndromes associated with adrenal cortical tumors are listed. Updates in molecular alterations in adrenal cortical neoplasms and hyperplastic diseases as well as their clinical significance and potential therapeutic implications are also discussed.  相似文献   
4.
5.
6.
7.
Journal of Immigrant and Minority Health - COVID-19 has disproportionally affected underrepresented minorities (URM) and low-income immigrants in the United States. The aim of the study is to...  相似文献   
8.
9.
ABSTRACT

Objective: Dry eye is reported to be associated with several neurological diseases. The aim of this study is to evaluate the patients with hemiplegia after stroke for dry eye and compare their results with a control group.

Materials and methods: Forty-five patients with hemiplegia and 45 individuals as the control group were included in the study. Tear function tests (Schirmer and tear breakup time) and a dry eye questionnaire for dry eye symptoms (ocular surface disease index) were performed and the results of the two groups were compared.

Results: Schirmer test results were significantly lower in the post-stroke hemiplegia group compared to the control group (11.3 ± 8.2 mm and 20.6 ± 11.6 mm, respectively, p < .001). Tear breakup time results were significantly lower in the post-stroke hemiplegia group compared to the control group (7.9 ± 3.1 s and 12.1 ± 4.3 s, respectively, p < .001). Ocular surface disease index scores were not significantly different between hemiplegia and control groups (21.6 ± 20.0 and 19.8 ± 13.9, respectively, p = .635). Schirmer scores lower than 10 mm (60% and 30%, p < .001) and tear breakup time results lower than 10 s (65.6% and 28.9%, p < .001) were also higher in the hemiplegia group compared to control group.

Conclusion: We found lower Schirmer test and tear breakup time results and similar OSDI scores in hemiplegia patients compared to controls. Hemiplegia patients may have dry eye without typical symptoms. This should be taken into consideration in the follow-up and rehabilitation of post-stroke hemiplegia patients.  相似文献   
10.
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