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   1404603篇
  免费   100375篇
  国内免费   2359篇
耳鼻咽喉   20083篇
儿科学   46281篇
妇产科学   41479篇
基础医学   204712篇
口腔科学   39151篇
临床医学   117007篇
内科学   280621篇
皮肤病学   31052篇
神经病学   110058篇
特种医学   53045篇
外国民族医学   395篇
外科学   213525篇
综合类   27206篇
现状与发展   1篇
一般理论   335篇
预防医学   105998篇
眼科学   31813篇
药学   107069篇
  1篇
中国医学   2907篇
肿瘤学   74598篇
  2018年   15781篇
  2017年   11393篇
  2016年   12568篇
  2015年   14353篇
  2014年   19712篇
  2013年   29854篇
  2012年   41661篇
  2011年   44308篇
  2010年   25854篇
  2009年   24129篇
  2008年   41790篇
  2007年   45024篇
  2006年   45455篇
  2005年   44680篇
  2004年   42796篇
  2003年   41350篇
  2002年   40662篇
  2001年   61711篇
  2000年   63383篇
  1999年   53797篇
  1998年   15251篇
  1997年   13549篇
  1996年   13730篇
  1995年   12892篇
  1994年   12227篇
  1993年   11288篇
  1992年   42565篇
  1991年   41825篇
  1990年   41276篇
  1989年   39943篇
  1988年   37241篇
  1987年   36431篇
  1986年   34717篇
  1985年   33108篇
  1984年   24634篇
  1983年   21432篇
  1982年   12774篇
  1981年   11250篇
  1979年   23362篇
  1978年   16376篇
  1977年   14127篇
  1976年   13384篇
  1975年   14698篇
  1974年   17321篇
  1973年   16723篇
  1972年   15851篇
  1971年   14739篇
  1970年   13773篇
  1969年   13264篇
  1968年   12477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.
5.
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   
6.
7.
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   
8.
Vaccination is a vital health care initiative to prevent individual and population infection. To increase vaccination rates the federal government implemented the ‘No Jab, No Pay’ policy, where eligibility for several government benefits required children to be fully vaccinated by removing ‘conscientious objections’ and expanding the age range of children whose families receive benefits. This study assesses the impact of this policy at a local area within a single medical practice community in NSW, Australia. A retrospective clinical audit was performed between 2012 and 2017 on a single general practice's vaccination records for children ≤19 years. Catch-up vaccinations were assessed based on age at vaccination. Incidence of catch-up vaccinations was assessed for each of four years before and two years after the implementation of the ‘No Jab, No Pay’ policy in January 2016, along with the age of children and vaccination(s) given. Catch-up vaccinations were assessed temporally either side of implementation of ‘No Jab, No Pay’. Comparing the average annual vaccination catch-up incidence rate of 6.2% pre-implementation (2012–2015), there was an increase to 9.2% in 2016 (p < .001) and 7.8% in 2017 (p = .027). Secondary outcome measurement of catch-up vaccination incidence rates before (2012–2015) and after (2016–2017) ‘No Jab, No Pay’ implementation showed statistically significant increases for children aged 8–11 years (3.2%–5.6%, p = .038), 12–15 years (7.5%–14.7%, p < .001) and 16–19 years (3.3%–10.2%, p < .001) along with a statistically significant reduction in children aged 1–3 years (11.4%–6.2%, p = .015). Also, catch-up rates for DTPa significantly increased after program implementation. This study demonstrates that the Australian federal government vaccination policy ‘No Jab, No Pay’ was coincident with an increase in catch-up vaccinations within a rural NSW community served by one medical practice, especially for older children.  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