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   146777篇
  免费   6840篇
  国内免费   310篇
耳鼻咽喉   2175篇
儿科学   4540篇
妇产科学   3202篇
基础医学   20322篇
口腔科学   4644篇
临床医学   9422篇
内科学   35379篇
皮肤病学   4703篇
神经病学   12004篇
特种医学   3729篇
外国民族医学   4篇
外科学   18326篇
综合类   736篇
一般理论   40篇
预防医学   13812篇
眼科学   3221篇
药学   10102篇
中国医学   656篇
肿瘤学   6910篇
  2023年   897篇
  2022年   558篇
  2021年   2758篇
  2020年   1437篇
  2019年   3129篇
  2018年   5535篇
  2017年   3289篇
  2016年   3160篇
  2015年   3478篇
  2014年   3931篇
  2013年   5886篇
  2012年   10474篇
  2011年   11044篇
  2010年   5494篇
  2009年   3950篇
  2008年   8915篇
  2007年   9541篇
  2006年   8863篇
  2005年   8826篇
  2004年   7852篇
  2003年   7373篇
  2002年   6914篇
  2001年   4340篇
  2000年   4993篇
  1999年   3727篇
  1998年   649篇
  1997年   406篇
  1996年   380篇
  1995年   318篇
  1992年   1461篇
  1991年   1212篇
  1990年   1132篇
  1989年   937篇
  1988年   821篇
  1987年   772篇
  1986年   796篇
  1985年   687篇
  1984年   521篇
  1983年   400篇
  1979年   451篇
  1978年   297篇
  1975年   333篇
  1974年   401篇
  1973年   445篇
  1972年   375篇
  1971年   397篇
  1970年   358篇
  1969年   403篇
  1968年   370篇
  1967年   304篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
Odontology - The purpose of this study was to investigate whether the root perforation repair with mineral aggregate-based cements affects the retention of customized fiberglass posts to bovine...  相似文献   
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.
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.
Clinical Oral Investigations - The aim of this study was to evaluate the efficacy of supplementary techniques (ultrasonic tip/XP-endo Finisher R) in removing remaining filling materials...  相似文献   
8.
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   
9.
10.
IntroductionThe current paradigm of the management of rheumatoid arthritis (RA) recommends achieving a state of remission or low disease activity through the treat-to-target strategy. Our study assesses adherence to this strategy.MethodPatients with RA (ACR-EULAR 2010 criteria) were included. From each centre, 19 patients were randomly selected. Clinical histories (CH) were assessed by independent auditors, checking compliance with predefined quality criteria. The study was approved by ethics committees.ResultsWe included 856 patients (mean age 54 years; 71% women). The use of a combined index (CI) was recorded in 61% of cases. Visits were recorded every 4 weeks using a CI in 4% of CH while attempts were made to achieve remission. Monitoring of disease activity every 6–8 months after reaching the target was recorded in 73% of cases.ConclusionsThe implementation of the treat-to-target strategy is barely recorded in patients with RA in routine clinical practice.  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