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   128828篇
  免费   10029篇
  国内免费   3847篇
耳鼻咽喉   1007篇
儿科学   2393篇
妇产科学   1856篇
基础医学   7419篇
口腔科学   2959篇
临床医学   15314篇
内科学   19048篇
皮肤病学   2406篇
神经病学   6638篇
特种医学   4208篇
外国民族医学   39篇
外科学   12651篇
综合类   18882篇
现状与发展   24篇
一般理论   2篇
预防医学   5477篇
眼科学   2083篇
药学   10992篇
  78篇
中国医学   11815篇
肿瘤学   17413篇
  2024年   208篇
  2023年   2258篇
  2022年   3300篇
  2021年   5728篇
  2020年   5317篇
  2019年   4818篇
  2018年   4556篇
  2017年   5027篇
  2016年   5327篇
  2015年   5169篇
  2014年   9226篇
  2013年   11688篇
  2012年   7642篇
  2011年   8125篇
  2010年   6674篇
  2009年   6139篇
  2008年   5989篇
  2007年   6406篇
  2006年   5772篇
  2005年   5120篇
  2004年   4140篇
  2003年   3774篇
  2002年   3108篇
  2001年   2721篇
  2000年   2257篇
  1999年   1779篇
  1998年   1487篇
  1997年   1251篇
  1996年   1038篇
  1995年   965篇
  1994年   761篇
  1993年   589篇
  1992年   528篇
  1991年   474篇
  1990年   419篇
  1989年   361篇
  1988年   343篇
  1987年   299篇
  1986年   248篇
  1985年   283篇
  1984年   255篇
  1983年   191篇
  1982年   193篇
  1981年   187篇
  1980年   149篇
  1979年   132篇
  1978年   77篇
  1977年   53篇
  1976年   55篇
  1975年   34篇
排序方式: 共有10000条查询结果,搜索用时 426 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