全文获取类型
收费全文 | 45026篇 |
免费 | 5035篇 |
国内免费 | 74篇 |
专业分类
耳鼻咽喉 | 634篇 |
儿科学 | 1268篇 |
妇产科学 | 1259篇 |
基础医学 | 7009篇 |
口腔科学 | 1053篇 |
临床医学 | 6117篇 |
内科学 | 8385篇 |
皮肤病学 | 594篇 |
神经病学 | 3625篇 |
特种医学 | 1490篇 |
外国民族医学 | 1篇 |
外科学 | 6036篇 |
综合类 | 921篇 |
一般理论 | 29篇 |
预防医学 | 4658篇 |
眼科学 | 674篇 |
药学 | 3638篇 |
中国医学 | 61篇 |
肿瘤学 | 2683篇 |
出版年
2021年 | 618篇 |
2020年 | 406篇 |
2019年 | 700篇 |
2018年 | 803篇 |
2017年 | 579篇 |
2016年 | 720篇 |
2015年 | 756篇 |
2014年 | 1037篇 |
2013年 | 1577篇 |
2012年 | 2101篇 |
2011年 | 2163篇 |
2010年 | 1219篇 |
2009年 | 1092篇 |
2008年 | 1887篇 |
2007年 | 1970篇 |
2006年 | 1919篇 |
2005年 | 1874篇 |
2004年 | 1795篇 |
2003年 | 1744篇 |
2002年 | 1773篇 |
2001年 | 1561篇 |
2000年 | 1596篇 |
1999年 | 1381篇 |
1998年 | 626篇 |
1997年 | 522篇 |
1996年 | 445篇 |
1995年 | 477篇 |
1994年 | 455篇 |
1993年 | 408篇 |
1992年 | 1118篇 |
1991年 | 1055篇 |
1990年 | 1038篇 |
1989年 | 962篇 |
1988年 | 879篇 |
1987年 | 902篇 |
1986年 | 870篇 |
1985年 | 890篇 |
1984年 | 707篇 |
1983年 | 604篇 |
1982年 | 428篇 |
1981年 | 353篇 |
1980年 | 366篇 |
1979年 | 579篇 |
1978年 | 441篇 |
1977年 | 362篇 |
1976年 | 368篇 |
1974年 | 379篇 |
1973年 | 333篇 |
1972年 | 338篇 |
1971年 | 304篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
991.
992.
Impact of oral clinical problems on oral health‐related quality of life in brazilian children: a hierarchical approach
下载免费PDF全文
![点击此处可从《International journal of paediatric dentistry / the British Paedodontic Society [and] the International Association of Dentistry for Children》网站下载免费的PDF全文](/ch/ext_images/free.gif)
João Gabriel Silva Souza Andréa Maria Eleutério De Barros Lima Martins Marise Fagundes Silveira Kimberly Marie Jones Maria Paula Maciel Rando Meirelles 《International journal of paediatric dentistry / the British Paedodontic Society [and] the International Association of Dentistry for Children》2017,27(1):66-78
993.
Clare Jones 《Veterinary Nursing Journal》2017,32(11):339-342
994.
Inquiries in the UK into mistreatment of older people by healthcare employees over the last 30 years have focused on introducing or supporting employee whistle‐blowing. Although whistle‐blowers have made an important contribution to patient safety it remains a controversial activity. The fate of whistle‐blowers is bleak, often resulting in personal and professional sacrifices. Here we draw on the views of healthcare and social care employees working with older people to explore perceptions of whistle‐blowing as well as alternative strategies that may be used to raise concerns about the mistreatment of patients by co‐workers. Whistle‐blowing was perceived as a negative term. Managers said they promoted open cultures underpinned by regular team meetings and an open‐door ethos. Others described workplace norms that were somewhat at odds with these open culture ideals. Whistle‐blowing was considered risky, and this led to staff creating informal channels through which to raise concerns. Those who witnessed wrongdoing were aware that support was available from external agencies but preferred local solutions and drew upon personal ethics rather than regulatory edicts to shape their responses. We argue that the importance of workplace relationships and informal channels for raising concerns should be better understood to help prevent the mistreatment of vulnerable groups. 相似文献
995.
M. Clokie A. L. Greenway K. Harding N. J. Jones K. Vedhara F. Game K. K. Dhatariya 《Diabetic medicine》2017,34(3):305-315
Diabetes‐related foot disease remains a common problem. For wounds, classic teaching recommends the treatment of any infection, offloading the wound and ensuring a good blood supply, as well as ensuring that the other modifiable risk factors are addressed and optimized. There remain, however, several questions about these and other aspects of the care of diabetes‐related foot disease. Some of these questions are addressed in the present report; in particular, the impact of newer technologies in the identification of any organisms present in a wound, as well as the use of novel approaches to treat infections. The use of new remote sensing technology to identify people at risk of developing foot ulceration is also considered, in an attempt to allow early intervention and prevention of foot ulcers. The psychological impact of foot disease is often overlooked, but with an increasing number of publications on the subject, the cause‐and‐effect role that psychology plays in foot disease, such as ulcers and Charcot neuroarthropathy, is considered. Finally, because of heterogeneity in diabetic foot studies, comparing results is difficult. A recently published document focusing on ensuring a standardized way of reporting foot disease trials is discussed. 相似文献
996.
997.
998.
Guang Yang Timothy L. Jones Thomas R. Barrick Franklyn A. Howe 《NMR in biomedicine》2014,27(9):1103-1111
The management and treatment of high‐grade glioblastoma multiforme (GBM) and solitary metastasis (MET) are very different and influence the prognosis and subsequent clinical outcomes. In the case of a solitary MET, diagnosis using conventional radiology can be equivocal. Currently, a definitive diagnosis is based on histopathological analysis on a biopsy sample. Here, we present a computerised decision support framework for discrimination between GBM and solitary MET using MRI, which includes: (i) a semi‐automatic segmentation method based on diffusion tensor imaging; (ii) two‐dimensional morphological feature extraction and selection; and (iii) a pattern recognition module for automated tumour classification. Ground truth was provided by histopathological analysis from pre‐treatment stereotactic biopsy or at surgical resection. Our two‐dimensional morphological analysis outperforms previous methods with high cross‐validation accuracy of 97.9% and area under the receiver operating characteristic curve of 0.975 using a neural networks‐based classifier. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
999.
1000.
Cliff K. Watts David Jones Dee Crouch John Carter Leland Mew Barry Moseley 《The Physician and sportsmedicine》2013,41(3):99-104
In brief: To determine what public and individual efforts might reduce bicycling accidents and injuries, a survey was conducted during the primary cycling months (April through September) in Boulder, Colorado. Of 253 patients (87 women, 166 men, average age 22) treated for injuries in bicycling accidents, almost 30% of the accidents were caused by gravel, and nearly half involved a motor vehicle. The most frequent types of injury were abrasions, contusions, lacerations, and fractures. The survey results confirm the need for adequate head protection, satisfactory lighting, and increased awareness on the bicyclist's part. In addition, improved street maintenance will drastically reduce the number of cycling injuries and accidents. 相似文献