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   178582篇
  免费   7542篇
  国内免费   432篇
耳鼻咽喉   2341篇
儿科学   5013篇
妇产科学   4189篇
基础医学   25473篇
口腔科学   6167篇
临床医学   10417篇
内科学   39922篇
皮肤病学   4992篇
神经病学   14491篇
特种医学   4299篇
外国民族医学   1篇
外科学   21191篇
综合类   835篇
一般理论   27篇
预防医学   20810篇
眼科学   4657篇
药学   13738篇
中国医学   740篇
肿瘤学   7253篇
  2023年   904篇
  2022年   621篇
  2021年   3054篇
  2020年   1804篇
  2019年   3429篇
  2018年   5449篇
  2017年   3370篇
  2016年   3372篇
  2015年   3841篇
  2014年   4537篇
  2013年   6619篇
  2012年   11173篇
  2011年   11893篇
  2010年   5971篇
  2009年   4565篇
  2008年   9641篇
  2007年   10348篇
  2006年   9895篇
  2005年   9401篇
  2004年   8723篇
  2003年   8085篇
  2002年   7721篇
  2001年   4978篇
  2000年   5529篇
  1999年   4247篇
  1998年   849篇
  1992年   2272篇
  1991年   2051篇
  1990年   2021篇
  1989年   1709篇
  1988年   1628篇
  1987年   1520篇
  1986年   1573篇
  1985年   1478篇
  1984年   1064篇
  1983年   912篇
  1979年   1222篇
  1978年   820篇
  1977年   780篇
  1976年   754篇
  1975年   884篇
  1974年   1135篇
  1973年   1171篇
  1972年   1118篇
  1971年   1087篇
  1970年   1016篇
  1969年   1089篇
  1968年   1107篇
  1967年   982篇
  1966年   883篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
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   
3.
4.
Pharmaceutical Research - Fluid-bed coating processes make it possible to manufacture pharmaceutical products with tuneable properties. The choice of polymer type and coating thickness provides...  相似文献   
5.
6.
7.
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   
8.
9.
The coronavirus disease 2019, which is caused by severe acute respiratory syndrome coronavirus 2, was first identified in December 2019 in Wuhan, China, and has since spread rapidly, evolving into a full-blown pandemic. We would like to report our experience after 1 year of this pandemic in the surgical service of a district hospital in Spain. There have been many changes (including new protocols) that our service and the hospital have undergone, to adapt to the new situation. We believe that this experience can be useful for other professionals who have lived and are living a similar situation.  相似文献   
10.
Background and objectivesThe treatment of deafferentation pain by spinal DREZotomy is a proven therapeutic option in the literature. In recent years, use of DREZotomy has been relegated to second place due to the emergence of neuromodulation therapies. The objectives of this study are to demonstrate that DREZotomy continues to be an effective and safe treatment and to analyse predictive factors for success.Patients and methodsA retrospective study was conducted of all patients treated in our department with spinal DREZotomy from 1998 to 2018. Bulbar DREZotomy procedures were excluded. A visual analogue scale (VAS) and the reduction of routine medication were used as outcome variables. Demographic, clinical and operative variables were analysed as predictive factors for success.ResultsA total of 27 patients (51.9% female) with a mean age of 53.7 years underwent DREZotomy. The main cause of pain was brachial plexus injury (BPI) (55.6%) followed by neoplasms (18.5%). The mean time of pain evolution was 8.4 years with a mean intensity of 8.7 according to the VAS, even though 63% of the patients had previously received neurostimulation therapy. Favourable outcome (≥ 50% pain reduction in the VAS) was observed in 77.8% of patients during the postoperative period and remained in 59.3% of patients after 22 months average follow-up (mean reduction of 4.9 points). This allowed for a reduction in routine analgesic treatment in 70.4% of them. DREZotomy in BPI-related pain presented a significantly higher success rate (93%) than the other pathologies (41.7%) (p = .001). No association was observed between outcome and age, gender, DREZ technique, duration of pain or previous neurostimulation therapies. There were six neurological complications, four post-operative transient neurological deficits and two permanent deficits.ConclusionDorsal root entry zone surgery is effective and safe for treating patients with deafferentation pain, especially after brachial plexus injury. It can be considered an alternative treatment after failed neurostimulation techniques for pain control. However, its indication should be considered as the first therapeutic option after medical therapy failure due to its good long-term results.  相似文献   
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