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   321881篇
  免费   15015篇
  国内免费   1302篇
耳鼻咽喉   4528篇
儿科学   9290篇
妇产科学   8200篇
基础医学   46398篇
口腔科学   10693篇
临床医学   20809篇
内科学   70947篇
皮肤病学   9772篇
神经病学   26280篇
特种医学   8093篇
外国民族医学   33篇
外科学   38013篇
综合类   2912篇
现状与发展   2篇
一般理论   66篇
预防医学   34512篇
眼科学   7765篇
药学   24787篇
  2篇
中国医学   1725篇
肿瘤学   13371篇
  2023年   1667篇
  2022年   2179篇
  2021年   6216篇
  2020年   3547篇
  2019年   6310篇
  2018年   9535篇
  2017年   6122篇
  2016年   6207篇
  2015年   7056篇
  2014年   8731篇
  2013年   12635篇
  2012年   19835篇
  2011年   20772篇
  2010年   11137篇
  2009年   8813篇
  2008年   16908篇
  2007年   17883篇
  2006年   17043篇
  2005年   16521篇
  2004年   15265篇
  2003年   14334篇
  2002年   13673篇
  2001年   9827篇
  2000年   10503篇
  1999年   8468篇
  1998年   2026篇
  1997年   1446篇
  1996年   1325篇
  1992年   4318篇
  1991年   3931篇
  1990年   3747篇
  1989年   3272篇
  1988年   3029篇
  1987年   2868篇
  1986年   2845篇
  1985年   2627篇
  1984年   1943篇
  1983年   1667篇
  1979年   2076篇
  1978年   1357篇
  1975年   1480篇
  1974年   1927篇
  1973年   1924篇
  1972年   1767篇
  1971年   1698篇
  1970年   1678篇
  1969年   1707篇
  1968年   1721篇
  1967年   1529篇
  1966年   1358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.
3.
4.
Inflammatory bowel disease (IBD) is a chronic disease that requires chronic treatment throughout the evolution of the disease, with a complex physiopathology that entails great challenges for the development of new and specific treatments for ulcerative colitis and Crohn´s disease. The anti-tumor necrosis factor alpha therapy has impacted the clinical course of IBD in those patients who do not respond to conventional treatment, so there is a need to develop new therapies and markers of treatment response. Various pathways involved in the development of the disease are known and the new therapies have focused on blocking the inflammatory process at the gastrointestinal level by oral, intravenous, subcutaneous, and topical route. All these new therapies can lead to more personalized treatments with higher success rates and fewer relapses. These treatments have not only focused on clinical remission, but also on achieving macroscopic changes at the endoscopic level and microscopic changes by achieving mucosal healing. These treatments are mainly based on modifying signaling pathways, by blocking receptors or ligands, reducing cell migration and maintaining the integrity of the epithelial barrier. Therefore, this review presents the efficacy and safety of the new treatments that are currently under study and the advances that have been made in this area in recent years.  相似文献   
5.
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   
6.
7.
8.
Breast pseudoaneurysms after a core needle biopsy are a rare complication with a low incidence. However, it is important to be aware of the possibility of complications that require treatment.  相似文献   
9.
10.
Introduction: In men, lower urinary tract symptoms (LUTS) are primarily attributed to benign prostatic hyperplasia (BPH). Therapeutic options are targeted to relax prostate smooth muscle and/or reduce prostate enlargement.

Areas covered: This article reviews the major preclinical and clinical data on PDE5 inhibitors with a specific focus on tadalafil. It includes details of the role of the nitric oxide (NO)-cyclic guanosine monophosphate (cGMP) – PDE5 pathway in the LUT organs (bladder and prostate) in addition to the available data on tadalafil in patients with LUTS secondary to BPH with or without erectile dysfunction (ED).

Expert opinion: Preclinical and clinical data have clearly demonstrated that PDE5 inhibitors induce bladder and prostate relaxation, which contributes to the improvement seen in storage symptoms in both animal models of bladder and prostate hypercontractility. Tadalafil is effective both as a monotherapy and add-on therapy in patients with LUTS secondary to BPH. Furthermore, as LUTS-BPH and ED are urological disorders that commonly coexist in aging men, tadalafil is more advantageous than α1-adrenoceptors and should be used as the first option. Tadalafil is a safe and tolerable therapy and unlike α1- adrenoceptors and 5-alpha reductase inhibitors, which can cause sexual dysfunctions, tadalafil improves sexual function.  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