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   270439篇
  免费   11989篇
  国内免费   698篇
耳鼻咽喉   3679篇
儿科学   8315篇
妇产科学   7853篇
基础医学   38387篇
口腔科学   8548篇
临床医学   17405篇
内科学   59879篇
皮肤病学   8037篇
神经病学   21926篇
特种医学   6695篇
外国民族医学   31篇
外科学   32184篇
综合类   1736篇
一般理论   56篇
预防医学   29218篇
眼科学   6519篇
药学   20312篇
中国医学   1106篇
肿瘤学   11240篇
  2023年   1328篇
  2022年   1571篇
  2021年   4843篇
  2020年   2693篇
  2019年   4945篇
  2018年   7552篇
  2017年   4845篇
  2016年   4999篇
  2015年   5506篇
  2014年   6786篇
  2013年   10112篇
  2012年   15940篇
  2011年   16626篇
  2010年   8835篇
  2009年   7122篇
  2008年   13678篇
  2007年   14478篇
  2006年   14072篇
  2005年   13767篇
  2004年   13007篇
  2003年   12090篇
  2002年   11577篇
  2001年   8443篇
  2000年   8864篇
  1999年   7199篇
  1998年   1859篇
  1997年   1275篇
  1996年   1208篇
  1992年   3820篇
  1991年   3562篇
  1990年   3417篇
  1989年   3003篇
  1988年   2811篇
  1987年   2629篇
  1986年   2647篇
  1985年   2423篇
  1984年   1800篇
  1983年   1567篇
  1979年   1964篇
  1978年   1316篇
  1975年   1406篇
  1974年   1808篇
  1973年   1795篇
  1972年   1655篇
  1971年   1576篇
  1970年   1570篇
  1969年   1609篇
  1968年   1579篇
  1967年   1419篇
  1966年   1268篇
排序方式: 共有10000条查询结果,搜索用时 210 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.
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   
4.
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   
5.
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