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   206103篇
  免费   9905篇
  国内免费   636篇
耳鼻咽喉   2838篇
儿科学   6372篇
妇产科学   5573篇
基础医学   28488篇
口腔科学   5716篇
临床医学   14126篇
内科学   47823篇
皮肤病学   6282篇
神经病学   17327篇
特种医学   5412篇
外国民族医学   37篇
外科学   26025篇
综合类   1124篇
一般理论   53篇
预防医学   20675篇
眼科学   4091篇
药学   14678篇
中国医学   666篇
肿瘤学   9338篇
  2023年   1049篇
  2022年   1708篇
  2021年   4801篇
  2020年   2516篇
  2019年   4463篇
  2018年   7285篇
  2017年   4601篇
  2016年   4000篇
  2015年   4265篇
  2014年   5795篇
  2013年   8378篇
  2012年   12376篇
  2011年   12759篇
  2010年   7196篇
  2009年   6268篇
  2008年   10544篇
  2007年   10986篇
  2006年   10629篇
  2005年   10707篇
  2004年   9975篇
  2003年   9348篇
  2002年   8932篇
  2001年   6235篇
  2000年   6439篇
  1999年   5351篇
  1998年   1642篇
  1997年   1149篇
  1996年   1097篇
  1995年   942篇
  1994年   797篇
  1992年   2672篇
  1991年   2499篇
  1990年   2372篇
  1989年   2083篇
  1988年   1884篇
  1987年   1857篇
  1986年   1718篇
  1985年   1626篇
  1984年   1188篇
  1983年   1033篇
  1979年   1137篇
  1978年   774篇
  1975年   778篇
  1974年   979篇
  1973年   956篇
  1972年   837篇
  1971年   795篇
  1970年   821篇
  1969年   779篇
  1968年   757篇
排序方式: 共有10000条查询结果,搜索用时 406 毫秒
1.
2.
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   
3.
International Journal of Clinical Oncology - Immune-checkpoint inhibitors (ICIs) are standard treatments for metastatic non-small cell lung cancer (NSCLC). Patients with poor performance status...  相似文献   
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.
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