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   126507篇
  免费   5740篇
  国内免费   295篇
耳鼻咽喉   2008篇
儿科学   3964篇
妇产科学   2685篇
基础医学   17123篇
口腔科学   4316篇
临床医学   7703篇
内科学   31500篇
皮肤病学   4041篇
神经病学   9907篇
特种医学   2924篇
外国民族医学   1篇
外科学   15759篇
综合类   670篇
一般理论   36篇
预防医学   12328篇
眼科学   2853篇
药学   8676篇
中国医学   616篇
肿瘤学   5432篇
  2023年   797篇
  2022年   484篇
  2021年   2547篇
  2020年   1281篇
  2019年   2889篇
  2018年   4958篇
  2017年   2880篇
  2016年   2660篇
  2015年   2975篇
  2014年   3375篇
  2013年   5130篇
  2012年   9120篇
  2011年   9724篇
  2010年   4846篇
  2009年   3392篇
  2008年   7774篇
  2007年   8363篇
  2006年   7723篇
  2005年   7659篇
  2004年   6772篇
  2003年   6362篇
  2002年   5978篇
  2001年   3822篇
  2000年   4439篇
  1999年   3295篇
  1998年   513篇
  1997年   322篇
  1996年   316篇
  1995年   247篇
  1992年   1264篇
  1991年   1051篇
  1990年   932篇
  1989年   767篇
  1988年   641篇
  1987年   623篇
  1986年   616篇
  1985年   528篇
  1984年   390篇
  1983年   299篇
  1979年   330篇
  1978年   205篇
  1975年   267篇
  1974年   313篇
  1973年   348篇
  1972年   288篇
  1971年   310篇
  1970年   291篇
  1969年   292篇
  1968年   267篇
  1967年   235篇
排序方式: 共有10000条查询结果,搜索用时 31 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.
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   
7.
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   
8.
9.
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   
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