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   208815篇
  免费   11163篇
  国内免费   624篇
耳鼻咽喉   2724篇
儿科学   6751篇
妇产科学   5663篇
基础医学   28987篇
口腔科学   5125篇
临床医学   15762篇
内科学   46658篇
皮肤病学   6215篇
神经病学   18804篇
特种医学   4903篇
外国民族医学   31篇
外科学   25099篇
综合类   1226篇
一般理论   94篇
预防医学   22292篇
眼科学   3998篇
药学   14628篇
中国医学   605篇
肿瘤学   11037篇
  2023年   1377篇
  2022年   1755篇
  2021年   5558篇
  2020年   3106篇
  2019年   5145篇
  2018年   6712篇
  2017年   4333篇
  2016年   4519篇
  2015年   4966篇
  2014年   6377篇
  2013年   9093篇
  2012年   13870篇
  2011年   14129篇
  2010年   7662篇
  2009年   6632篇
  2008年   11197篇
  2007年   11628篇
  2006年   11312篇
  2005年   11122篇
  2004年   10279篇
  2003年   9479篇
  2002年   8883篇
  2001年   5432篇
  2000年   5552篇
  1999年   4707篇
  1998年   1593篇
  1997年   1142篇
  1996年   1054篇
  1995年   890篇
  1994年   732篇
  1992年   2311篇
  1991年   2204篇
  1990年   2045篇
  1989年   1807篇
  1988年   1651篇
  1987年   1606篇
  1986年   1495篇
  1985年   1434篇
  1984年   1084篇
  1983年   929篇
  1979年   1017篇
  1978年   676篇
  1975年   690篇
  1974年   886篇
  1973年   864篇
  1972年   748篇
  1971年   699篇
  1970年   747篇
  1969年   709篇
  1968年   670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.
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.
8.
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   
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