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   125403篇
  免费   9637篇
  国内免费   3557篇
耳鼻咽喉   1010篇
儿科学   2357篇
妇产科学   1796篇
基础医学   7194篇
口腔科学   2900篇
临床医学   15233篇
内科学   18604篇
皮肤病学   2308篇
神经病学   6512篇
特种医学   4098篇
外国民族医学   39篇
外科学   12505篇
综合类   18338篇
现状与发展   23篇
一般理论   2篇
预防医学   5173篇
眼科学   2039篇
药学   10121篇
  73篇
中国医学   11039篇
肿瘤学   17233篇
  2024年   185篇
  2023年   2152篇
  2022年   3206篇
  2021年   5521篇
  2020年   5177篇
  2019年   4641篇
  2018年   4407篇
  2017年   4888篇
  2016年   5186篇
  2015年   4956篇
  2014年   9012篇
  2013年   11430篇
  2012年   7394篇
  2011年   7866篇
  2010年   6518篇
  2009年   5983篇
  2008年   5870篇
  2007年   6286篇
  2006年   5619篇
  2005年   5005篇
  2004年   4052篇
  2003年   3665篇
  2002年   3013篇
  2001年   2672篇
  2000年   2210篇
  1999年   1737篇
  1998年   1432篇
  1997年   1206篇
  1996年   1002篇
  1995年   911篇
  1994年   733篇
  1993年   557篇
  1992年   490篇
  1991年   450篇
  1990年   385篇
  1989年   340篇
  1988年   333篇
  1987年   281篇
  1986年   227篇
  1985年   270篇
  1984年   238篇
  1983年   174篇
  1982年   175篇
  1981年   171篇
  1980年   133篇
  1979年   125篇
  1978年   71篇
  1977年   50篇
  1976年   57篇
  1975年   36篇
排序方式: 共有10000条查询结果,搜索用时 203 毫秒
31.
32.
33.
PurposeTo examine the long-term clinical outcomes of patients with anti-centromere antibody (ACA)-positive critical limb-threatening ischemia (CLTI) who were treated with endovascular therapy (EVT).Materials and MethodsThis was a retrospective analysis using a database of 423 consecutive CLTI patients (543 limbs, Rutherford class 4–6) who underwent EVT between January 2011 and March 2013. The patients were divided into 2 groups: an ACA-positive group (10 limbs, 8 patients) and a control group (46 limbs, 43 patients). The control group was defined as female, non-dialysis, and those who were able to obtain a below-knee angiogram.ResultsNone of the 8 ACA-positive CLTI patients had previously been diagnosed as ACA positive. No significant difference was observed in the below-the-knee lesion distribution and severity between the ACA-positive group and the control group. The median observational period was 51 months. The survival rate was 54% in the ACA-positive group and 76% in the control group at 5 years after EVT (P = .732). The freedom from major amputation rate was 60% in the ACA-positive group and 91% in the control group at 5 years after EVT (P = .029). The technical EVT success rate in the ACA-positive group was 70% (7/10). Of the successful EVT cases, 71% (5/7) of patients achieved complete wound healing or rest pain relief; however, 60% (3/5) had a recurrence of wounds.ConclusionsIn a series of ACA-positive patients with CLTI, successful EVT had acceptable outcomes with respect to wound healing with short-term results. However, the major amputation rate for ACA-positive patients was high in long-term follow-up.  相似文献   
34.
35.
Background: Poor anger regulation is considered a risk factor of aggression in individuals with mild or borderline intellectual disabilities. Psychomotor therapy (PMT) targets anger regulation through body- and movement-oriented interventions. This study aims to inform practitioners on efficacy and research-base of PMT in this population.

Method: This systematic review evaluated nine studies which met inclusion criteria in terms of participants, intervention procedures, outcomes and certainty of evidence.

Results: Seven studies revealed a substantial reduction of aggressive behaviour or anger. Certainty of evidence was rated inconclusive in most cases due to absence of experimental control.

Conclusions: We can conclude that body-oriented PMT, involving progressive relaxation and meditation procedure “Soles of the Feet”, is a promising approach. However, the paucity of studies and methodological limitations preclude classifying it as an evidence-based practice. This suggests stronger methodological research and research aimed at PMT’s mechanisms of action (e.g., improved interoceptive awareness) is warranted.  相似文献   

36.
Introduction: Ischemic stroke is becoming a primary cause of disability and death worldwide. To date, therapeutic options remain limited focusing on mechanical thrombolysis or administration of thrombolytic agents. However, these therapies do not promote neuroprotection and neuro-restoration of the ischemic area of the brain.

Areas covered: This review highlights the option of minimal invasive, intra-arterial, administration of biological agents for stroke therapy. The authors provide an update of all available studies, discuss issues that influence outcomes and describe future perspectives which aim to improve clinical outcomes. New therapeutic options based on cellular and molecular interactions following an ischemic brain event, will be highlighted.

Expert opinion: Intra-arterial administration of biological agents during trans-catheter thrombolysis or thrombectomy could limit neuronal cell death and facilitate regeneration or neurogenesis following ischemic brain injury. Despite the initial progress, further meticulous studies are needed in order to establish the clinical use of stem cell-induced neuroprotection and neuroregeneration.  相似文献   

37.
38.
39.
40.
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