全文获取类型
收费全文 | 2424篇 |
免费 | 161篇 |
国内免费 | 20篇 |
专业分类
耳鼻咽喉 | 22篇 |
儿科学 | 93篇 |
妇产科学 | 22篇 |
基础医学 | 335篇 |
口腔科学 | 266篇 |
临床医学 | 257篇 |
内科学 | 500篇 |
皮肤病学 | 35篇 |
神经病学 | 130篇 |
特种医学 | 271篇 |
外科学 | 158篇 |
综合类 | 22篇 |
预防医学 | 210篇 |
眼科学 | 22篇 |
药学 | 159篇 |
中国医学 | 30篇 |
肿瘤学 | 73篇 |
出版年
2024年 | 5篇 |
2023年 | 25篇 |
2022年 | 41篇 |
2021年 | 65篇 |
2020年 | 47篇 |
2019年 | 66篇 |
2018年 | 74篇 |
2017年 | 49篇 |
2016年 | 68篇 |
2015年 | 78篇 |
2014年 | 102篇 |
2013年 | 99篇 |
2012年 | 142篇 |
2011年 | 152篇 |
2010年 | 100篇 |
2009年 | 112篇 |
2008年 | 104篇 |
2007年 | 88篇 |
2006年 | 95篇 |
2005年 | 58篇 |
2004年 | 63篇 |
2003年 | 70篇 |
2002年 | 55篇 |
2001年 | 40篇 |
2000年 | 29篇 |
1999年 | 35篇 |
1998年 | 61篇 |
1997年 | 63篇 |
1996年 | 68篇 |
1995年 | 56篇 |
1994年 | 47篇 |
1993年 | 52篇 |
1992年 | 20篇 |
1991年 | 20篇 |
1990年 | 23篇 |
1989年 | 42篇 |
1988年 | 37篇 |
1987年 | 39篇 |
1986年 | 37篇 |
1985年 | 26篇 |
1984年 | 18篇 |
1983年 | 13篇 |
1982年 | 23篇 |
1981年 | 14篇 |
1980年 | 9篇 |
1979年 | 8篇 |
1978年 | 5篇 |
1977年 | 15篇 |
1976年 | 14篇 |
1975年 | 17篇 |
排序方式: 共有2605条查询结果,搜索用时 15 毫秒
1.
Milena Soares Santos Guilherme de Sousa Ribeiro Tainara Queiroz Oliveira Renan Cardoso Nery Santos Edilane Gouveia Kátia Salgado Daniele Takahashi Cleuber Fontes Leila Carvalho Campos Mitermayer Galvão Reis Albert Icksang Ko Joice Neves Reis 《International journal of infectious diseases》2009,13(4):456-461
2.
Neuroimaging in Pineal Tumors 总被引:4,自引:0,他引:4
F Reis MD AV Faria MD PhD VA Zanardi MD PhD JR Menezes MD F Cendes MD PhD LS Queiroz MD PhD 《Journal of neuroimaging》2006,16(1):52-58
BACKGROUND AND PURPOSE: The authors report radiological findings in 11 tumors in the pineal region, which were histologically diagnosed as germinomas, pineocytomas pineoblastomas, ependymomas, teratomas, and astrocytomas. METHODS: Computed tomography (CT) was performed in seven patients and magnetic resonance imaging (MRI) was performed in all patients. RESULTS: CT showed a solid or solid/cystic mass with variable contrast enhancement. MRI showed a heterogeneous mass, with hypointense signal on T1 and iso/hyperintense signal on T2-weighted images (WI) and gadolinium enhancement. Extension to adjacent structures occurred in five patients and spread through the cerebral spinal fluid (CSF) in two. CONCLUSIONS: Pineal region tumors have no pathognomonic imaging pattern. MRI and CT are complementary in diagnosis and are important to determine localization, extension, and meningeal spread. 相似文献
3.
4.
5.
6.
7.
Georges Dellatolas Lucia Willadino Braga Ligia do Nascimento Souza Gilberto Nunes Filho Elizabeth Queiroz Gerard Deloche 《Journal of the International Neuropsychological Society》2003,9(5):771-782
The effect of the degree of illiteracy (complete or incomplete) on phonological skills, verbal and visual memory and visuospatial skills is examined in 97 normal Brazilian adults who considered themselves illiterate, and 41 Brazilian school children aged 7 to 8 years, either nonreaders or beginning readers. Similar literacy effects were observed in children and in adults. Tasks involving phonological awareness and visual recognition memory of nonsense figures distinguish the best nonreaders and beginning readers. Children performed better than adults at oral repetition of short items and figure recall, and adults better than children at semantic verbal fluency, digit span, and word list recall. A principal component analysis of the correlations between tasks showed that phonological awareness/reading, phonological memory/oral repetition, and semantic verbal memory/fluency tasks, generated different components. The respective role of culturally based preschool activities and literacy on the cognitive functions that are explored in this study is discussed. 相似文献
8.
9.
Does altered biomechanics cause marrow edema? 总被引:21,自引:0,他引:21
10.