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   233640篇
  免费   9906篇
  国内免费   490篇
耳鼻咽喉   3266篇
儿科学   6700篇
妇产科学   5443篇
基础医学   33167篇
口腔科学   8095篇
临床医学   13746篇
内科学   52785篇
皮肤病学   6682篇
神经病学   19102篇
特种医学   5657篇
外国民族医学   2篇
外科学   27153篇
综合类   1111篇
一般理论   50篇
预防医学   27024篇
眼科学   5884篇
药学   17871篇
中国医学   1010篇
肿瘤学   9288篇
  2023年   1211篇
  2022年   960篇
  2021年   3862篇
  2020年   2159篇
  2019年   4392篇
  2018年   7367篇
  2017年   4558篇
  2016年   4473篇
  2015年   4992篇
  2014年   5742篇
  2013年   8761篇
  2012年   14855篇
  2011年   15843篇
  2010年   7963篇
  2009年   5806篇
  2008年   12966篇
  2007年   13924篇
  2006年   13131篇
  2005年   12792篇
  2004年   11686篇
  2003年   10985篇
  2002年   10415篇
  2001年   7040篇
  2000年   7871篇
  1999年   6048篇
  1998年   1079篇
  1992年   2970篇
  1991年   2594篇
  1990年   2483篇
  1989年   2121篇
  1988年   1974篇
  1987年   1868篇
  1986年   1901篇
  1985年   1732篇
  1984年   1261篇
  1983年   1068篇
  1979年   1390篇
  1978年   906篇
  1977年   883篇
  1976年   867篇
  1975年   1013篇
  1974年   1308篇
  1973年   1378篇
  1972年   1288篇
  1971年   1261篇
  1970年   1163篇
  1969年   1226篇
  1968年   1266篇
  1967年   1120篇
  1966年   993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