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   175106篇
  免费   8374篇
  国内免费   524篇
耳鼻咽喉   2448篇
儿科学   5523篇
妇产科学   4754篇
基础医学   24042篇
口腔科学   4845篇
临床医学   11778篇
内科学   40686篇
皮肤病学   5671篇
神经病学   14377篇
特种医学   4036篇
外国民族医学   31篇
外科学   22530篇
综合类   927篇
一般理论   42篇
预防医学   17631篇
眼科学   3600篇
药学   12414篇
中国医学   551篇
肿瘤学   8118篇
  2023年   899篇
  2022年   1412篇
  2021年   4011篇
  2020年   2063篇
  2019年   3880篇
  2018年   5224篇
  2017年   3300篇
  2016年   3338篇
  2015年   3660篇
  2014年   4923篇
  2013年   7103篇
  2012年   10847篇
  2011年   11159篇
  2010年   6136篇
  2009年   5285篇
  2008年   9083篇
  2007年   9546篇
  2006年   9232篇
  2005年   9220篇
  2004年   8604篇
  2003年   7923篇
  2002年   7609篇
  2001年   5287篇
  2000年   5447篇
  1999年   4559篇
  1998年   1318篇
  1997年   956篇
  1996年   897篇
  1995年   750篇
  1994年   644篇
  1992年   2258篇
  1991年   2155篇
  1990年   2005篇
  1989年   1762篇
  1988年   1611篇
  1987年   1577篇
  1986年   1464篇
  1985年   1400篇
  1984年   1040篇
  1983年   890篇
  1979年   1006篇
  1978年   664篇
  1975年   685篇
  1974年   882篇
  1973年   855篇
  1972年   743篇
  1971年   702篇
  1970年   751篇
  1969年   708篇
  1968年   673篇
排序方式: 共有10000条查询结果,搜索用时 15 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.
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