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   216835篇
  免费   12281篇
  国内免费   2110篇
耳鼻咽喉   2860篇
儿科学   6522篇
妇产科学   5547篇
基础医学   28419篇
口腔科学   5717篇
临床医学   16863篇
内科学   47012篇
皮肤病学   6458篇
神经病学   16342篇
特种医学   5056篇
外国民族医学   38篇
外科学   26864篇
综合类   7035篇
现状与发展   2篇
一般理论   50篇
预防医学   21425篇
眼科学   4776篇
药学   16967篇
  52篇
中国医学   2818篇
肿瘤学   10403篇
  2023年   1440篇
  2022年   3037篇
  2021年   6027篇
  2020年   3666篇
  2019年   5122篇
  2018年   6589篇
  2017年   4715篇
  2016年   4481篇
  2015年   5453篇
  2014年   7209篇
  2013年   9759篇
  2012年   14530篇
  2011年   14933篇
  2010年   8843篇
  2009年   7598篇
  2008年   11719篇
  2007年   12055篇
  2006年   11448篇
  2005年   11181篇
  2004年   10041篇
  2003年   9302篇
  2002年   8680篇
  2001年   5780篇
  2000年   5861篇
  1999年   4894篇
  1998年   1524篇
  1997年   1140篇
  1996年   1080篇
  1995年   920篇
  1994年   770篇
  1992年   2379篇
  1991年   2243篇
  1990年   2094篇
  1989年   1849篇
  1988年   1692篇
  1987年   1659篇
  1986年   1549篇
  1985年   1484篇
  1984年   1108篇
  1983年   961篇
  1979年   1064篇
  1978年   700篇
  1975年   706篇
  1974年   920篇
  1973年   885篇
  1972年   758篇
  1971年   717篇
  1970年   767篇
  1969年   727篇
  1968年   686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.
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   
8.
9.
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   

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