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   691473篇
  免费   35632篇
  国内免费   1016篇
耳鼻咽喉   9369篇
儿科学   21782篇
妇产科学   16263篇
基础医学   114209篇
口腔科学   18287篇
临床医学   59302篇
内科学   133017篇
皮肤病学   16770篇
神经病学   47477篇
特种医学   23570篇
外国民族医学   56篇
外科学   98368篇
综合类   8559篇
现状与发展   2篇
一般理论   156篇
预防医学   54861篇
眼科学   15520篇
药学   52840篇
  1篇
中国医学   1984篇
肿瘤学   35728篇
  2021年   8205篇
  2020年   4544篇
  2019年   7915篇
  2018年   11438篇
  2017年   7620篇
  2016年   8324篇
  2015年   9230篇
  2014年   12231篇
  2013年   17804篇
  2012年   26741篇
  2011年   29509篇
  2010年   16340篇
  2009年   13775篇
  2008年   24926篇
  2007年   27189篇
  2006年   25883篇
  2005年   25307篇
  2004年   24036篇
  2003年   22900篇
  2002年   21838篇
  2001年   26733篇
  2000年   27758篇
  1999年   22761篇
  1998年   6160篇
  1997年   5105篇
  1996年   5004篇
  1995年   4656篇
  1992年   16002篇
  1991年   17189篇
  1990年   17206篇
  1989年   16693篇
  1988年   15261篇
  1987年   15041篇
  1986年   14078篇
  1985年   13490篇
  1984年   10013篇
  1983年   8521篇
  1979年   9500篇
  1978年   6764篇
  1977年   5461篇
  1976年   5804篇
  1975年   6992篇
  1974年   7900篇
  1973年   7631篇
  1972年   7043篇
  1971年   6743篇
  1970年   6261篇
  1969年   5929篇
  1968年   5556篇
  1967年   4985篇
排序方式: 共有10000条查询结果,搜索用时 796 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.
International Journal of Clinical Oncology - Immune-checkpoint inhibitors (ICIs) are standard treatments for metastatic non-small cell lung cancer (NSCLC). Patients with poor performance status...  相似文献   
5.
6.
7.
8.
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   
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