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   9213篇
  免费   658篇
  国内免费   30篇
耳鼻咽喉   61篇
儿科学   306篇
妇产科学   256篇
基础医学   1347篇
口腔科学   158篇
临床医学   1073篇
内科学   1884篇
皮肤病学   272篇
神经病学   1042篇
特种医学   178篇
外科学   892篇
综合类   36篇
一般理论   10篇
预防医学   951篇
眼科学   150篇
药学   522篇
中国医学   18篇
肿瘤学   745篇
  2024年   10篇
  2023年   90篇
  2022年   165篇
  2021年   379篇
  2020年   235篇
  2019年   323篇
  2018年   384篇
  2017年   268篇
  2016年   282篇
  2015年   286篇
  2014年   444篇
  2013年   554篇
  2012年   829篇
  2011年   766篇
  2010年   404篇
  2009年   361篇
  2008年   524篇
  2007年   620篇
  2006年   572篇
  2005年   541篇
  2004年   460篇
  2003年   367篇
  2002年   357篇
  2001年   42篇
  2000年   40篇
  1999年   52篇
  1998年   67篇
  1997年   50篇
  1996年   41篇
  1995年   33篇
  1994年   36篇
  1993年   25篇
  1992年   26篇
  1991年   10篇
  1990年   14篇
  1989年   14篇
  1988年   10篇
  1987年   6篇
  1986年   18篇
  1985年   12篇
  1984年   11篇
  1983年   18篇
  1982年   13篇
  1981年   8篇
  1980年   15篇
  1978年   6篇
  1977年   8篇
  1975年   6篇
  1970年   7篇
  1933年   7篇
排序方式: 共有9901条查询结果,搜索用时 15 毫秒
121.
122.
123.
124.
125.
126.
127.
128.
BackgroundLearning for patients and their families within nurses’ patient- and family-education practice is an important part of person- and family-centred care. Patients and their families must master health promotional or management strategies to optimise their health outcomes. Support is often provided by nurses, but how nurses facilitate each patient’s and their family’s learning, using cognitive learning principles, seems invisible in the nursing literature.AimThis discussion paper examines the important role of cognitive learning within nurses’ patient- and family-education practice. How learning is enabled, the differences between teaching and learning and the role of learning principles are discussed. Shortcomings are identified and possible ways to address these within nurses’ practice are considered.MethodsThe discussion draws on the limited current literature surrounding cognitive learning principles in nurses’ practice and nurses’ awareness of learning principles. Readers are encouraged to question their current conceptualisation of learning and their perceptions and use of learning principles in their practice.Findings and discussionThe learning process within nursing is overshadowed by explanations of teaching strategies, determinants of learning and the learning principles of one specific theorist. The principles of cognitive learning and their role in patient- and family-education are poorly described and possibly poorly understood. This creates a fundamental knowledge gap in nursing practice.ConclusionA significant rethink about the role of learning principles within nurses’ patient- and family-education practice is overdue. These principles need to be explored further by involving nurses, patients and their families to identify how nurses are perceiving and using learning principles in their practice.  相似文献   
129.
Mitochondrial DNA variants may contribute to differences in mitochondrial function, leading to an altered immune system. The aim of this study was to analyze the relationship between mtDNA haplogroups and the development of chronic allograft dysfunction in patients with kidney transplant. A retrospective observational study was carried out on 261 patients who received kidney transplant (114 had stable transplant and 147 patients developed chronic allograft dysfunction). DNA samples were genotyped for 14 mtDNA polymorphisms by using Sequenom''s MassARRAY platform (San Diego, CA, USA). Only European white patients within the N macro-cluster were included. Patients with haplogroups V (odds ratio (OR)=0.32; p=0.037) and J (OR=0.36; p=0.038) showed lower odds for developing CRAD than patients with haplogroup H. After adjusting for the most significant variables, haplogroups V and J tended to statistical significance (p=0.091 and p=0.067 respectively). This is a preliminary study in which mtDNA haplogroups seem to be implicated in susceptibility or protection for developing chronic allograft dysfunction.  相似文献   
130.
Stress in children and adolescents is common and related to many developmental problems. However, most studies have made no distinction between temporary or chronic stress due to the lack of a suitable questionnaire. This study tested the factor structure, reliability and validity of the 17-item self-report Chronic Stress Questionnaire for Children and Adolescents (CSQ-CA) in three samples, that is, 717 adolescents from the general population, 161 adolescents of parents with a severe chronic medical condition (CMC) like multiple sclerosis, and 113 adolescents with healthy parents. Results showed that a one-factor solution provided a reasonable fit overall. Reliability was good (α = .80 to .88). Convergent validity was supported by positive relations between total stress scores and internalizing and externalizing problem behaviors, experience of daily hassles, and maladaptive emotion regulation strategies and negative relations with quality of life, happiness, mindfulness, self-esteem, and coping skills. Adolescents from all samples, who themselves had a light CMC like asthma, showed higher chronic stress levels than those without a CMC. In line, adolescents of parents with a severe CMC reported more chronic stress than those of healthy parents, and adolescents with a chronic illness themselves and a parent with a chronic illness, showed the highest scores across the two family types. Overall, this study presents good psychometric properties of the first available measure of chronic stress in children and adolescents.  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