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   164737篇
  免费   6825篇
  国内免费   366篇
耳鼻咽喉   2214篇
儿科学   4794篇
妇产科学   3862篇
基础医学   23826篇
口腔科学   5536篇
临床医学   9370篇
内科学   36326篇
皮肤病学   4502篇
神经病学   13274篇
特种医学   4014篇
外国民族医学   1篇
外科学   18990篇
综合类   776篇
一般理论   24篇
预防医学   19834篇
眼科学   4369篇
药学   12881篇
中国医学   671篇
肿瘤学   6664篇
  2023年   836篇
  2022年   578篇
  2021年   2540篇
  2020年   1414篇
  2019年   2867篇
  2018年   5039篇
  2017年   3121篇
  2016年   3116篇
  2015年   3486篇
  2014年   3826篇
  2013年   5834篇
  2012年   10168篇
  2011年   10757篇
  2010年   5297篇
  2009年   3837篇
  2008年   8773篇
  2007年   9438篇
  2006年   9025篇
  2005年   8623篇
  2004年   8016篇
  2003年   7515篇
  2002年   7126篇
  2001年   4872篇
  2000年   5450篇
  1999年   4141篇
  1998年   710篇
  1992年   2217篇
  1991年   1992篇
  1990年   1975篇
  1989年   1684篇
  1988年   1604篇
  1987年   1504篇
  1986年   1541篇
  1985年   1451篇
  1984年   1040篇
  1983年   896篇
  1979年   1207篇
  1978年   806篇
  1977年   779篇
  1976年   742篇
  1975年   876篇
  1974年   1121篇
  1973年   1164篇
  1972年   1110篇
  1971年   1076篇
  1970年   1007篇
  1969年   1082篇
  1968年   1105篇
  1967年   977篇
  1966年   878篇
排序方式: 共有10000条查询结果,搜索用时 718 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