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   179804篇
  免费   8432篇
  国内免费   656篇
耳鼻咽喉   2904篇
儿科学   5061篇
妇产科学   4149篇
基础医学   23822篇
口腔科学   6951篇
临床医学   11717篇
内科学   44363篇
皮肤病学   5358篇
神经病学   14930篇
特种医学   4542篇
外国民族医学   2篇
外科学   22616篇
综合类   1051篇
一般理论   50篇
预防医学   16272篇
眼科学   3735篇
药学   12293篇
中国医学   949篇
肿瘤学   8127篇
  2023年   1092篇
  2022年   832篇
  2021年   4473篇
  2020年   2499篇
  2019年   4530篇
  2018年   6401篇
  2017年   3897篇
  2016年   3851篇
  2015年   4321篇
  2014年   5843篇
  2013年   8313篇
  2012年   12945篇
  2011年   13921篇
  2010年   7473篇
  2009年   5923篇
  2008年   10956篇
  2007年   11479篇
  2006年   10633篇
  2005年   10625篇
  2004年   9505篇
  2003年   8734篇
  2002年   8099篇
  2001年   4550篇
  2000年   5078篇
  1999年   4005篇
  1998年   958篇
  1997年   715篇
  1996年   627篇
  1995年   616篇
  1994年   509篇
  1993年   404篇
  1992年   1599篇
  1991年   1337篇
  1990年   1205篇
  1989年   1001篇
  1988年   878篇
  1987年   792篇
  1986年   800篇
  1985年   688篇
  1984年   537篇
  1983年   435篇
  1979年   455篇
  1978年   314篇
  1975年   315篇
  1974年   398篇
  1973年   408篇
  1972年   339篇
  1971年   365篇
  1970年   326篇
  1969年   356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.
4.
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   
5.
Cardiovascular Drugs and Therapy - Available animal models of acute heart failure (AHF) and their limitations are discussed herein. A novel and preclinically relevant porcine model of decompensated...  相似文献   
6.
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   
7.
8.
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   
9.
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   
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