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   241084篇
  免费   11247篇
  国内免费   615篇
耳鼻咽喉   3580篇
儿科学   7417篇
妇产科学   6300篇
基础医学   33628篇
口腔科学   7721篇
临床医学   15743篇
内科学   55466篇
皮肤病学   7622篇
神经病学   19827篇
特种医学   5586篇
外国民族医学   31篇
外科学   29753篇
综合类   1257篇
一般理论   61篇
预防医学   24858篇
眼科学   5211篇
药学   17489篇
中国医学   955篇
肿瘤学   10441篇
  2023年   1319篇
  2022年   1623篇
  2021年   5049篇
  2020年   2685篇
  2019年   5081篇
  2018年   7562篇
  2017年   4736篇
  2016年   4658篇
  2015年   5171篇
  2014年   6510篇
  2013年   9698篇
  2012年   15348篇
  2011年   16043篇
  2010年   8591篇
  2009年   6816篇
  2008年   13079篇
  2007年   13919篇
  2006年   13163篇
  2005年   13009篇
  2004年   11990篇
  2003年   11285篇
  2002年   10691篇
  2001年   7411篇
  2000年   7967篇
  1999年   6396篇
  1998年   1551篇
  1997年   1096篇
  1996年   1042篇
  1995年   886篇
  1992年   3045篇
  1991年   2779篇
  1990年   2562篇
  1989年   2244篇
  1988年   2042篇
  1987年   1985篇
  1986年   1896篇
  1985年   1739篇
  1984年   1303篇
  1983年   1095篇
  1979年   1274篇
  1978年   832篇
  1975年   889篇
  1974年   1126篇
  1973年   1129篇
  1972年   979篇
  1971年   949篇
  1970年   986篇
  1969年   937篇
  1968年   898篇
  1967年   806篇
排序方式: 共有10000条查询结果,搜索用时 968 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.
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.
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   

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