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   173337篇
  免费   7271篇
  国内免费   372篇
耳鼻咽喉   2262篇
儿科学   5000篇
妇产科学   3980篇
基础医学   25108篇
口腔科学   5518篇
临床医学   10302篇
内科学   38335篇
皮肤病学   4722篇
神经病学   14121篇
特种医学   4483篇
外国民族医学   4篇
外科学   20174篇
综合类   822篇
一般理论   25篇
预防医学   20225篇
眼科学   4462篇
药学   13401篇
中国医学   690篇
肿瘤学   7346篇
  2023年   857篇
  2022年   594篇
  2021年   2603篇
  2020年   1459篇
  2019年   2997篇
  2018年   5331篇
  2017年   3298篇
  2016年   3327篇
  2015年   3697篇
  2014年   4079篇
  2013年   6171篇
  2012年   10863篇
  2011年   11414篇
  2010年   5603篇
  2009年   4146篇
  2008年   9354篇
  2007年   10079篇
  2006年   9636篇
  2005年   9242篇
  2004年   8555篇
  2003年   8036篇
  2002年   7536篇
  2001年   4983篇
  2000年   5587篇
  1999年   4216篇
  1998年   761篇
  1992年   2249篇
  1991年   2019篇
  1990年   2015篇
  1989年   1721篇
  1988年   1655篇
  1987年   1553篇
  1986年   1596篇
  1985年   1506篇
  1984年   1075篇
  1983年   921篇
  1979年   1226篇
  1978年   830篇
  1977年   797篇
  1976年   756篇
  1975年   891篇
  1974年   1136篇
  1973年   1189篇
  1972年   1126篇
  1971年   1096篇
  1970年   1016篇
  1969年   1105篇
  1968年   1127篇
  1967年   990篇
  1966年   894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.
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   
4.
5.
6.
7.
8.
Introduction: The treatment of classical Hodgkin lymphoma (cHL) in children is a story of success. Nowadays, more than 90% of patients are cured and overall survival is nearly 100% at 5 years. Efforts have been made to avoid related effects of therapies; therefore, children are treated using different chemotherapy schemes in comparison with adults.

Areas covered: This review includes a view of the clinical classification and risk assessment in children suffering from HL. The chemotherapy more commonly employed is revisited. The use of PET/CT to evaluate the disease in order to guide therapy is analyzed. New options of chemotherapy and emerging immunotherapy are also included.

Expert opinion: In order to make the right treatment choice, a proper initial assessment of risk is mandatory. The choice of therapy in these kinds of patients must be done according to the experience of the team, and also, the cost and logistics related to the eligible scheme are very important. If possible, efforts must be made to include PET/CT in guiding therapy and avoiding overtreatment and long-term adverse effects in children. New options in immunotherapy are emerging and must be considered with caution in selected patients.  相似文献   

9.

Purpose

Endovascular treatment with mechanical thrombectomy devices demonstrated high recanalization rates but functional outcome did not correlate with high rates of recanalization obtained. Patient selection prior to the endovascular treatment is very important in the final outcome of the patient. The primary aim of our study was to evaluate the prognostic value of posterior circulation Alberta Stroke Program Early CT Score (pc-ASPECTS) and Pons-Midbrain Index (PMI) scores in patients with Basilar Artery Occlusion (BAO) treated with successful angiographic recanalization after mechanical thrombectomy.

Methods

Retrospective single-center study including 18 patients between 2008 and 2013 who had acute basilar artery occlusion managed with endovascular treatment within 24 hours from symptoms onset and with successful angiographic recanalization. The patients were initially classified into two groups according to clinical outcome and mortality at 90 days. For analysis we also divided patients into groups based on pc-ASPECTS (≥8vs.< 8) and PMI (≥3vs.< 3) on non-contrast CT (NCCT) and CT Angiography Source Images (CTASI). Imaging data were correlated to clinical outcome and mortality rate.

Results

CTASI pc-ASPECTS, dichotomized at < 8 versus≥8, was associated with a favorable outcome (RR: 2.6; 95% CI: 1.3-5.2) and a reduced risk of death (RR: 6.5: 95% CI: 7.8-23.3). All patients that survived and were functionally independent had pc-ASPECTS score≥8. None of the 5 patients with CTASI pc-ASPECTS score less than 8 survived.

Conclusion

PC-ASPECTS on CTASI is helpful for predicting functional outcome after BAO recanalization with endovascular treatment. These results should be validated in a randomized controlled trial in order to decide whether or not to treat a patient with BAO.  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