全文获取类型
收费全文 | 3701篇 |
免费 | 428篇 |
国内免费 | 17篇 |
专业分类
耳鼻咽喉 | 32篇 |
儿科学 | 98篇 |
妇产科学 | 68篇 |
基础医学 | 457篇 |
口腔科学 | 86篇 |
临床医学 | 460篇 |
内科学 | 647篇 |
皮肤病学 | 81篇 |
神经病学 | 390篇 |
特种医学 | 186篇 |
外科学 | 510篇 |
综合类 | 128篇 |
一般理论 | 1篇 |
预防医学 | 371篇 |
眼科学 | 102篇 |
药学 | 302篇 |
中国医学 | 2篇 |
肿瘤学 | 225篇 |
出版年
2022年 | 27篇 |
2021年 | 45篇 |
2020年 | 38篇 |
2019年 | 54篇 |
2018年 | 73篇 |
2017年 | 48篇 |
2016年 | 58篇 |
2015年 | 68篇 |
2014年 | 80篇 |
2013年 | 104篇 |
2012年 | 211篇 |
2011年 | 214篇 |
2010年 | 125篇 |
2009年 | 101篇 |
2008年 | 145篇 |
2007年 | 173篇 |
2006年 | 153篇 |
2005年 | 143篇 |
2004年 | 155篇 |
2003年 | 133篇 |
2002年 | 132篇 |
2001年 | 141篇 |
2000年 | 136篇 |
1999年 | 134篇 |
1998年 | 67篇 |
1997年 | 74篇 |
1996年 | 63篇 |
1995年 | 46篇 |
1994年 | 48篇 |
1993年 | 49篇 |
1992年 | 65篇 |
1991年 | 72篇 |
1990年 | 48篇 |
1989年 | 65篇 |
1988年 | 65篇 |
1987年 | 81篇 |
1986年 | 70篇 |
1985年 | 67篇 |
1984年 | 45篇 |
1983年 | 45篇 |
1982年 | 28篇 |
1981年 | 36篇 |
1980年 | 28篇 |
1979年 | 30篇 |
1978年 | 30篇 |
1977年 | 22篇 |
1976年 | 32篇 |
1974年 | 23篇 |
1973年 | 25篇 |
1971年 | 31篇 |
排序方式: 共有4146条查询结果,搜索用时 171 毫秒
91.
Fiona Hutchinson 《Journal of neonatal nursing : JNN》2013,19(6):296-300
This article describes a change in the teaching and learning strategy for newly qualified neonatal nurses who wish to become qualified in the speciality (QIS) of neonatal nursing. Two modules have undergone revision in the light of feedback from the Regional Neonatal Network and evaluations from stakeholders. This paper provides the rationale for change and discusses developments in teaching and learning strategies, and the planning and implementing process involved in the change. Factors to take into consideration when evaluating the change and implications for future developments are also briefly discussed. 相似文献
92.
93.
94.
Shelmerdine Susan C. Main Cheryl Hutchinson John Ciaran Langan Dean Sebire Neil J. Arthurs Owen J. 《International journal of legal medicine》2018,132(6):1735-1741
International Journal of Legal Medicine - Diffusion-weighted MRI provides information regarding body water movement following death, which may be an imaging marker of post-mortem interval (time... 相似文献
95.
STOPDVTs: Development and testing of a clinical assessment tool to guide nursing assessment of postoperative patients for Deep Vein Thrombosis 下载免费PDF全文
Alanna O'Brien BN MN Bernice Redley PhD BN Beverley Wood PhD BN Mari Botti PhD BN Anastasia F Hutchinson PhD BN 《Journal of clinical nursing》2018,27(9-10):1803-1811
96.
97.
Virginia F J Newcombe Guy B Williams Joanne G Outtrim Doris Chatfield M Gulia Abate Thomas Geeraerts Anne Manktelow Hywel Room Leela Mariappen Peter J Hutchinson Jonathan P Coles David K Menon 《Journal of cerebral blood flow and metabolism》2013,33(6):855-862
Traumatic brain injury (TBI) is often exacerbated by events that lead to secondary brain injury, and represent potentially modifiable causes of mortality and morbidity. Diffusion tensor imaging was used to characterize tissue at-risk in a group of 35 patients scanned at a median of 50 hours after injury. Injury progression was assessed in a subset of 16 patients with two scans. All contusions within the first few days of injury showed a core of restricted diffusion, surrounded by an area of raised apparent diffusion coefficient (ADC). In addition to these two well-defined regions, a thinner rim of reduced ADC was observed surrounding the region of increased ADC in 91% of patients scanned within the first 3 days after injury. In patients who underwent serial imaging, the rim of ADC hypointensity was subsumed into the high ADC region as the contusion enlarged. Overall contusion enlargement tended to be more frequent with early lesions, but its extent was unrelated to the time of initial imaging, initial contusion size, or the presence of hemostatic abnormalities. This rim of hypointensity may characterize a region of microvascular failure resulting in cytotoxic edema, and may represent a ‘traumatic penumbra'' which may be rescued by effective therapy. 相似文献
98.
99.
Resistance to reinfection in experimental murine schistosomiasis: role of porto-hepatic hemodynamics 总被引:1,自引:0,他引:1
H A Pons J S Morgan M L Hutchinson M Rojkind R J Groszmann M J Stadecker 《The American journal of tropical medicine and hygiene》1989,41(2):189-197
Experiments were conducted to evaluate critically, and independently of the immune system, the possible role of hemodynamic mechanisms in resistance to schistosomal reinfection. The effects of a challenge schistosomal infection were compared in groups of mice which were either previously infected with schistosomiasis, vaccinated with irradiated cercariae, or underwent partial portal vein ligation for the induction of portal hypertension and porto-systemic shunting. Following infection with 60 cercariae, the appearance of portal hypertension preceded by approximately 2 weeks the development of porto-systemic shunting, which reached maximal values 11 weeks postinfection. Such a primary infection conferred on C3H mice an estimated 90% protection to a 2nd infection, measured by the reduction of worm burden. Worm burdens were also reduced in vaccinated and ligated animals as compared to normal controls. The protection amounted to 30% and 56%, respectively, in the C3H strain and 63% and 75-85%, respectively, in the C57Bl/6 strain. Reduction in worm burden in the ligated animals is believed to be due to the extrahepatic porto-systemic vascular shunts. Hemodynamic as well as immunological factors may account for the resistance to reinfection observed in chronic murine schistosomiasis. 相似文献
100.