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   263629篇
  免费   11648篇
  国内免费   648篇
耳鼻咽喉   3647篇
儿科学   7911篇
妇产科学   6959篇
基础医学   38031篇
口腔科学   8391篇
临床医学   16626篇
内科学   58274篇
皮肤病学   8040篇
神经病学   21547篇
特种医学   6709篇
外国民族医学   31篇
外科学   31407篇
综合类   1320篇
一般理论   53篇
预防医学   28613篇
眼科学   6433篇
药学   20054篇
中国医学   955篇
肿瘤学   10924篇
  2023年   1279篇
  2022年   1542篇
  2021年   4753篇
  2020年   2629篇
  2019年   4885篇
  2018年   7422篇
  2017年   4739篇
  2016年   4817篇
  2015年   5371篇
  2014年   6604篇
  2013年   9931篇
  2012年   15528篇
  2011年   16166篇
  2010年   8627篇
  2009年   6946篇
  2008年   13294篇
  2007年   14089篇
  2006年   13692篇
  2005年   13351篇
  2004年   12424篇
  2003年   11556篇
  2002年   11157篇
  2001年   8154篇
  2000年   8694篇
  1999年   7033篇
  1998年   1758篇
  1997年   1237篇
  1996年   1190篇
  1992年   3734篇
  1991年   3483篇
  1990年   3392篇
  1989年   2990篇
  1988年   2783篇
  1987年   2622篇
  1986年   2595篇
  1985年   2400篇
  1984年   1787篇
  1983年   1539篇
  1979年   1941篇
  1978年   1284篇
  1975年   1379篇
  1974年   1781篇
  1973年   1766篇
  1972年   1628篇
  1971年   1559篇
  1970年   1546篇
  1969年   1584篇
  1968年   1583篇
  1967年   1406篇
  1966年   1260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.
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