全文获取类型
收费全文 | 32203篇 |
免费 | 2944篇 |
国内免费 | 91篇 |
专业分类
耳鼻咽喉 | 275篇 |
儿科学 | 1098篇 |
妇产科学 | 852篇 |
基础医学 | 4797篇 |
口腔科学 | 476篇 |
临床医学 | 4098篇 |
内科学 | 6709篇 |
皮肤病学 | 663篇 |
神经病学 | 3572篇 |
特种医学 | 598篇 |
外科学 | 3162篇 |
综合类 | 363篇 |
一般理论 | 38篇 |
预防医学 | 3470篇 |
眼科学 | 464篇 |
药学 | 2263篇 |
中国医学 | 51篇 |
肿瘤学 | 2289篇 |
出版年
2023年 | 257篇 |
2022年 | 420篇 |
2021年 | 881篇 |
2020年 | 603篇 |
2019年 | 906篇 |
2018年 | 950篇 |
2017年 | 722篇 |
2016年 | 765篇 |
2015年 | 853篇 |
2014年 | 1122篇 |
2013年 | 1484篇 |
2012年 | 2356篇 |
2011年 | 2353篇 |
2010年 | 1286篇 |
2009年 | 1075篇 |
2008年 | 1878篇 |
2007年 | 1980篇 |
2006年 | 1950篇 |
2005年 | 1846篇 |
2004年 | 1708篇 |
2003年 | 1535篇 |
2002年 | 1348篇 |
2001年 | 494篇 |
2000年 | 447篇 |
1999年 | 444篇 |
1998年 | 305篇 |
1997年 | 247篇 |
1996年 | 217篇 |
1995年 | 222篇 |
1994年 | 162篇 |
1993年 | 161篇 |
1992年 | 251篇 |
1991年 | 251篇 |
1990年 | 255篇 |
1989年 | 257篇 |
1988年 | 256篇 |
1987年 | 221篇 |
1986年 | 233篇 |
1985年 | 191篇 |
1984年 | 164篇 |
1983年 | 158篇 |
1982年 | 126篇 |
1981年 | 112篇 |
1980年 | 105篇 |
1979年 | 153篇 |
1978年 | 135篇 |
1976年 | 111篇 |
1974年 | 127篇 |
1973年 | 113篇 |
1971年 | 110篇 |
排序方式: 共有10000条查询结果,搜索用时 931 毫秒
11.
Recognizing and managing a deteriorating patient: a randomized controlled trial investigating the effectiveness of clinical simulation in improving clinical performance in undergraduate nursing students
下载免费PDF全文
![点击此处可从《Journal of advanced nursing》网站下载免费的PDF全文](/ch/ext_images/free.gif)
12.
13.
14.
15.
Lipid peroxidation, occupational stress and aging in workers of a prehospital emergency service. 总被引:2,自引:0,他引:2
Angela Casado Nieves De Lucas Encarnación López-Fernández Alberto Sánchez José-Antonio Jimenez 《European journal of emergency medicine》2006,13(3):165-171
BACKGROUND: Stressful conditions lead to formation of excessive free radicals, and lipid peroxidation is one of the major outcomes of free radical-mediated injury that directly damages membranes and generates a number of secondary products. OBJECTIVES: To determine the levels of malondialdehyde, an end product of lipid peroxidation, according to demographic and occupational variables in workers of a prehospital emergency service and to analyse the relationship between malondialdehyde levels and burnout. MATERIAL AND METHODS: One hundred and eleven healthy workers of a prehospital emergency service and eighty aged-matched healthy individuals of both sexes as a control group were surveyed. Malondialdehyde levels were measured by the Bull and Marnett method. To measure burnout, the Maslach Burnout Inventory was used. RESULTS: Professional category is associated with lipid peroxidation and burnout levels (Malondialdehyde levels were: physicians 338.10+/-14.47, nurses 329.17+/-12.62 and technicians 296.74+/-14.28; burnout levels were: physicians 41.29+/-3.59, nurses 37.38+/-6.05 and technicians 35.33+/-5.87). Working at night and in the evening increased malondialdehyde and burnout levels. Malondialdehyde levels increase with age. No significant variations with respect to sex were detected. Significant variations in malondialdehyde levels were detected between singles (303.13+/-12.74) and married people (344.43+/-13.43) but not with respect to divorcees (326.44+/-11.74). Significant differences were detected in erythrocyte malondialdehyde levels between smokers (341.37+/-17.09) and nonsmokers (302.21+/-12.38), but not for alcohol consumption. CONCLUSIONS: These findings suggest a positive correlation between malondialdehyde, a biomarker of lipid peroxidation and occupational stress, as estimated by elements of the Maslach Burnout Inventory, and oxidative stress. 相似文献
16.
17.
Successful efforts in improving breastfeeding initiation rates at an urban teaching hospital prompted the hospital to create a lactation consultant (LC) position in the outpatient setting to focus on breastfeeding duration. This article reviews the complexity of the clinic setting, with the challenges and benefits of the consultant's first year in one of the hospital's outpatient clinics. Preliminary data collected by the consultant suggest that patients counseled by the LC in the outpatient clinic setting have longer breastfeeding duration rates. 相似文献
18.
19.
Three cases of enteritis necroticans seen at Port Moresby General Hospital are described. All three cases proved diagnostic problems and in all three the diagnosis was made only at laparotomy. While the condition is uncommon in Port Moresby, these cases indicate that it must now be considered earlier rather than later. 相似文献
20.