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   11308篇
  免费   725篇
  国内免费   31篇
耳鼻咽喉   92篇
儿科学   450篇
妇产科学   422篇
基础医学   1302篇
口腔科学   103篇
临床医学   2226篇
内科学   1907篇
皮肤病学   193篇
神经病学   835篇
特种医学   384篇
外科学   1063篇
综合类   96篇
一般理论   28篇
预防医学   1509篇
眼科学   171篇
药学   648篇
中国医学   10篇
肿瘤学   625篇
  2023年   61篇
  2022年   91篇
  2021年   182篇
  2020年   178篇
  2019年   266篇
  2018年   286篇
  2017年   226篇
  2016年   254篇
  2015年   247篇
  2014年   356篇
  2013年   617篇
  2012年   763篇
  2011年   898篇
  2010年   414篇
  2009年   406篇
  2008年   812篇
  2007年   709篇
  2006年   699篇
  2005年   721篇
  2004年   720篇
  2003年   659篇
  2002年   595篇
  2001年   135篇
  2000年   116篇
  1999年   132篇
  1998年   131篇
  1997年   109篇
  1996年   95篇
  1995年   80篇
  1994年   75篇
  1993年   80篇
  1992年   94篇
  1991年   68篇
  1990年   73篇
  1989年   62篇
  1988年   57篇
  1987年   53篇
  1986年   57篇
  1985年   61篇
  1984年   53篇
  1983年   51篇
  1982年   48篇
  1981年   47篇
  1980年   23篇
  1979年   20篇
  1978年   31篇
  1977年   20篇
  1976年   13篇
  1975年   19篇
  1974年   30篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.

Objective

To examine whether a healthy weight intervention embedded in the Parents as Teachers (PAT) home visiting program, which was previously found to improve mothers’ body mass index (BMI) and obesity-related behaviors, changed the BMI of preschool children or maternal feeding practices.

Methods

This stratified randomized trial included preschool-aged children at risk for overweight whose mothers were overweight or had obesity (n?=?179). The Healthy Eating and Active Living Taught at Home (HEALTH) intervention was based on the Diabetes Prevention Program. Differences were examined using repeated-measures mixed-ANOVA models.

Results

Compared with PAT usual care, the HEALTH intervention had no effect on children's BMI or maternal feeding practices. However, combined analyses showed that children's BMI percentile decreased (P??=?.007), BMI z-scores were maintained (P??=?.19), and 3 of 8 feeding practices improved over time (P < .05).

Conclusions and Implications

Additional research is needed to assess the effectiveness of PAT to prevent preschool-age obesity using rigorous designs (eg, group-randomized trials) and to identify its active components. HEALTH is ready to be scaled up to prevent maternal weight gain through embedding within the national PAT program.  相似文献   
2.
3.
4.
5.
6.
7.
Relationship-centered care reflects both knowing and feeling: the knowledge that physician and patient bring from their respective domains of expertise, and the physician’s and patient’s experience, expression, and perception of emotions during the medical encounter. These processes are conveyed and reciprocated in the care process through verbal and nonverbal communication. We suggest that the emotional context of care is especially related to nonverbal communication and that emotion-related communication skills, including sending and receiving nonverbal messages and emotional self-awareness, are critical elements of high-quality care. Although nonverbal behavior has received far less study than other care processes, the current review argues that it holds significance for the therapeutic relationship and influences important outcomes including satisfaction, adherence, and clinical outcomes of care.  相似文献   
8.
9.
Because of its neurocognitive enhancing effects, Gingko biloba has emerged as amongst the most commonly used herbal products. We report a liver transplant recipient with potentially life-threatening toxicity resulting from Gingko biloba use. Seven days after a second liver transplantation for recurrent hepatitisB virus infection, subphrenic hematoma was documented in a 59-year-old Korean patient. Failure to control bleeding with CT-guided drainage necessitated exploratory laparotomy for the evacuation of a large subphrenic hematoma. Three weeks later, an episode of vitreous hemorrhage was documented. Unbeknownst to his care providers, the patient had been consuming Gingko biloba throughout the postoperative period. No further bleeding episodes occurred after the cessation of Gingko biloba use. Unrecognized use of herbal products may be associated with serious side effects and adverse clinical sequelae in transplant recipients. Given their increasing popularity, the use of herbal products should be routinely sought as part of the history in transplant recipients.  相似文献   
10.
Hypertension (HTN), the leading cause of morbidity and mortality worldwide, is a modifiable risk factor for atherosclerosis. However, all too often, HTN is not well controlled in patients with vascular disease. Studies have demonstrated that patients whose blood pressure is controlled achieve at least a 50% reduction in cardiovascular events compared with similar patients whose blood pressure is not controlled. The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure recently prepared and distributed new guidelines for the management of HTN. This article will highlight the new recommendations for HTN management and how they can be applied to the patient with vascular disease.  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