全文获取类型
收费全文 | 173184篇 |
免费 | 32218篇 |
国内免费 | 2454篇 |
专业分类
耳鼻咽喉 | 5465篇 |
儿科学 | 6694篇 |
妇产科学 | 2966篇 |
基础医学 | 5587篇 |
口腔科学 | 2018篇 |
临床医学 | 27851篇 |
内科学 | 51844篇 |
皮肤病学 | 8138篇 |
神经病学 | 16084篇 |
特种医学 | 7058篇 |
外科学 | 43752篇 |
综合类 | 984篇 |
现状与发展 | 72篇 |
一般理论 | 15篇 |
预防医学 | 8135篇 |
眼科学 | 4672篇 |
药学 | 3082篇 |
中国医学 | 185篇 |
肿瘤学 | 13254篇 |
出版年
2024年 | 696篇 |
2023年 | 4920篇 |
2022年 | 1586篇 |
2021年 | 3861篇 |
2020年 | 6378篇 |
2019年 | 2650篇 |
2018年 | 8011篇 |
2017年 | 7748篇 |
2016年 | 8948篇 |
2015年 | 8886篇 |
2014年 | 16268篇 |
2013年 | 16582篇 |
2012年 | 6877篇 |
2011年 | 7022篇 |
2010年 | 11145篇 |
2009年 | 14887篇 |
2008年 | 6814篇 |
2007年 | 5097篇 |
2006年 | 7560篇 |
2005年 | 4682篇 |
2004年 | 3870篇 |
2003年 | 2719篇 |
2002年 | 2733篇 |
2001年 | 4452篇 |
2000年 | 3670篇 |
1999年 | 3735篇 |
1998年 | 3841篇 |
1997年 | 3606篇 |
1996年 | 3486篇 |
1995年 | 3339篇 |
1994年 | 2047篇 |
1993年 | 1654篇 |
1992年 | 1733篇 |
1991年 | 1768篇 |
1990年 | 1386篇 |
1989年 | 1497篇 |
1988年 | 1293篇 |
1987年 | 1094篇 |
1986年 | 1111篇 |
1985年 | 941篇 |
1984年 | 714篇 |
1983年 | 652篇 |
1982年 | 583篇 |
1981年 | 489篇 |
1980年 | 423篇 |
1979年 | 461篇 |
1978年 | 424篇 |
1977年 | 477篇 |
1975年 | 360篇 |
1972年 | 419篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
52.
53.
J H Newcorn J M Halperin J M Healey J D O'Brien D M Pascualvaca L E Wolf A Morganstein V Sharma J G Young 《Journal of the American Academy of Child and Adolescent Psychiatry》1989,28(5):734-738
To assess the relationship between the DSM-III criteria for attention deficit disorder with hyperactivity (ADDH) and the DSM-III-R criteria for attention-deficit hyperactivity disorder (ADHD), children from an inner city parochial school were evaluated using a 30-item teacher questionnaire consisting of the DMS-III and DSM-III-R criteria for these disorders, the revised Conners Parent and Teacher Questionnaires, and a continuous performance test. Diagnostic groups were established based on teacher ratings of the DSM items and evaluated in relation to the rating scale data and continuous performance test. While children who were identified by teachers as having ADDH almost always satisfied the criteria for ADHD, a new group of children who were hyperactive and impulsive but less clearly inattentive also met the criteria for ADHD. Implications of the change in diagnostic criteria are discussed. 相似文献
54.
55.
56.
SETTING: Homes in Delhi, India. OBJECTIVE: To study the reach of mass media campaigns and their impact on awareness about tuberculosis (TB) control among homemakers/housewives. DESIGN: A community-based cross-sectional survey among homemakers residing in Delhi for more than 6 months. RESULTS: Of a total of 920 women interviewed, about 74.2% had seen specific TB-related health messages in one or more of the mass media. The maximum number of subjects could recall having seen billboards or television campaigns. The percentage of respondents who had correct information about various aspects of the disease was higher among those who had seen TB campaigns on any of the mass media. The effectiveness of radio and newsprint in communicating TB messages was found to be more limited than that of television and billboards. CONCLUSION: The mass media can be effective in getting messages about TB across to the community of women who are homemakers, especially in developing countries. In view of our findings, it may be recommended that television and billboards be used as tools for reaching out to them with specific campaigns regarding TB control, and that the use of these media should be strengthened further. 相似文献
57.
58.
59.
Four Chinese patients (2 boys, 2 girls), ages 4–9 years, who had episodes of perception error of body schema and objects are reported. The metamorphopsia, which had been named Alice in Wonderland syndrome, is the major presentation. All of them were proved to have acute Epstein-Barr virus infection, as documented by positive heterophil antibody test and/or positive IgM antibody to Epstein-Barr virus capsid antigen. The duration of the perception disorder ranged from 1 week to 3 months. We believe that any young child presenting with Alice in Wonderland syndrome should undergo examination for Epstein-Barr virus infection; complete recovery from the disorder can be expected. 相似文献
60.