全文获取类型
收费全文 | 20462篇 |
免费 | 1349篇 |
国内免费 | 56篇 |
专业分类
耳鼻咽喉 | 125篇 |
儿科学 | 432篇 |
妇产科学 | 268篇 |
基础医学 | 2716篇 |
口腔科学 | 324篇 |
临床医学 | 2559篇 |
内科学 | 3576篇 |
皮肤病学 | 198篇 |
神经病学 | 1818篇 |
特种医学 | 708篇 |
外科学 | 2829篇 |
综合类 | 231篇 |
一般理论 | 28篇 |
预防医学 | 2660篇 |
眼科学 | 430篇 |
药学 | 1595篇 |
中国医学 | 35篇 |
肿瘤学 | 1335篇 |
出版年
2024年 | 20篇 |
2023年 | 136篇 |
2022年 | 239篇 |
2021年 | 486篇 |
2020年 | 308篇 |
2019年 | 435篇 |
2018年 | 511篇 |
2017年 | 390篇 |
2016年 | 429篇 |
2015年 | 580篇 |
2014年 | 741篇 |
2013年 | 969篇 |
2012年 | 1638篇 |
2011年 | 1666篇 |
2010年 | 949篇 |
2009年 | 888篇 |
2008年 | 1456篇 |
2007年 | 1598篇 |
2006年 | 1448篇 |
2005年 | 1445篇 |
2004年 | 1411篇 |
2003年 | 1331篇 |
2002年 | 1150篇 |
2001年 | 144篇 |
2000年 | 106篇 |
1999年 | 161篇 |
1998年 | 219篇 |
1997年 | 149篇 |
1996年 | 132篇 |
1995年 | 101篇 |
1994年 | 111篇 |
1993年 | 87篇 |
1992年 | 49篇 |
1991年 | 43篇 |
1990年 | 28篇 |
1989年 | 33篇 |
1988年 | 23篇 |
1987年 | 32篇 |
1986年 | 25篇 |
1985年 | 24篇 |
1984年 | 24篇 |
1983年 | 28篇 |
1982年 | 23篇 |
1981年 | 25篇 |
1980年 | 20篇 |
1979年 | 4篇 |
1978年 | 9篇 |
1977年 | 7篇 |
1976年 | 14篇 |
1975年 | 4篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
31.
32.
33.
A device called the Dex Frame has recently been marketed as an aid for children with specific learning difficulties. Using a test of reading speed and a test of reading accuracy we have attempted to evaluate the device. Two groups of children with learning difficulties were used, one having sole use of the device and being allowed to carry it with them and a second group who only used the device when attending for remedial tuition and assessment. The results show that no significant improvement occurred in reading performance of the groups with learning difficulties using the Dex Frame as compared with a control group. The teachers of the groups did, however, feel that on an individual basis some children (< 10%) expressed that they felt more comfortable using the device. 相似文献
34.
35.
36.
Peter M Miller Ruth Stockdell Lynne Nemeth Chris Feifer Ruth G Jenkins Paul J Nietert Andrea Wessell Heather Liszka Steven Ornstein 《Substance Abuse》2006,27(1-2):61-70
Many medical conditions are caused or exacerbated by heavy drinking, necessitating alcohol screening and discussion in primary care practices. This is particularly true of hypertension, the most common primary diagnosis in the United States, which has been linked to the regular consumption of 3 or more standard alcoholic beverages a day. The Accelerating Alcohol Screening-Translating Research into Practice (AA-TRIP) project was designed to improve detection and management of alcohol problems in primary care patients with hypertension. Medical providers are being trained using the Practice Partner Research Network's- Translating Research into Practice (PPRNet-TRIP) quality improvement model. This includes a multi-method intervention (electronic medical records, on-site academic detailing, practice feedback reports and annual network meetings) to help practices increase adherence to clinical guidelines. Qualitative analyses of initial steps taken by nine primary care practices toward the routine implementation of alcohol screening guidelines are presented. Organizational factors and provider and patient characteristics all influenced the method and consistency of alcohol screening and intervention. Perceived time constraints, patient sensitivity to questions about alcohol, and possible stigma associated with a diagnosis of alcoholism were also relevant barriers requiring problem solving. 相似文献
37.
38.
39.
40.