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   1989422篇
  免费   142415篇
  国内免费   4127篇
耳鼻咽喉   26405篇
儿科学   64690篇
妇产科学   54698篇
基础医学   299408篇
口腔科学   53251篇
临床医学   176565篇
内科学   391257篇
皮肤病学   47181篇
神经病学   154717篇
特种医学   72996篇
外国民族医学   513篇
外科学   292478篇
综合类   39561篇
现状与发展   5篇
一般理论   626篇
预防医学   158753篇
眼科学   45135篇
药学   144287篇
  2篇
中国医学   4784篇
肿瘤学   108652篇
  2021年   16662篇
  2019年   17643篇
  2018年   26033篇
  2017年   18802篇
  2016年   20946篇
  2015年   23440篇
  2014年   31682篇
  2013年   47292篇
  2012年   67497篇
  2011年   72325篇
  2010年   41543篇
  2009年   37662篇
  2008年   65368篇
  2007年   70023篇
  2006年   69389篇
  2005年   67291篇
  2004年   64256篇
  2003年   61293篇
  2002年   59127篇
  2001年   92645篇
  2000年   95108篇
  1999年   78475篇
  1998年   21713篇
  1997年   19216篇
  1996年   19354篇
  1995年   18316篇
  1994年   16540篇
  1993年   15737篇
  1992年   58610篇
  1991年   57802篇
  1990年   55986篇
  1989年   53784篇
  1988年   49361篇
  1987年   48502篇
  1986年   45184篇
  1985年   43100篇
  1984年   32605篇
  1983年   27487篇
  1982年   16083篇
  1979年   29303篇
  1978年   20656篇
  1977年   17026篇
  1976年   16744篇
  1975年   18118篇
  1974年   21380篇
  1973年   20689篇
  1972年   19245篇
  1971年   17792篇
  1970年   16889篇
  1969年   15624篇
排序方式: 共有10000条查询结果,搜索用时 46 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.
3.
4.

The exercise pressor reflex is a feedback mechanism engaged upon stimulation of mechano- and metabosensitive skeletal muscle afferents. Activation of these afferents elicits a reflex increase in heart rate, blood pressure, and ventilation in an intensity-dependent manner. Consequently, the exercise pressor reflex has been postulated to be one of the principal mediators of the cardiorespiratory responses to exercise. In this updated review, we will discuss classical and recent advancements in our understating of the exercise pressor reflex function in both human and animal models. Particular attention will be paid to the afferent mechanisms and pathways involved during its activation, its effects on different target organs, its potential role in the abnormal cardiovascular response to exercise in diseased states, and the impact of age and biological sex on these responses. Finally, we will highlight some unanswered questions in the literature that may inspire future investigations in the field.

  相似文献   
5.
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   
6.
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   
7.
The coronavirus disease 2019 (COVID-19) pandemic has rapidly created widespread impacts on global health and the economy. Data suggest that women are less susceptible to severe illness. However, sex-disaggregated data are incomplete, leaving room for misinterpretation, and focusing only on biologic sex underestimates the gendered impact of the pandemic on women. This narrative review summarizes what is known about gender disparities during the COVID-19 pandemic and the economic, domestic, and health burdens along with overlapping vulnerabilities related to the pandemic. In addition, this review outlines recommended strategies that advocacy groups, community leaders, and policymakers should implement to mitigate the widening gender disparities related to COVID-19.  相似文献   
8.
9.
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