全文获取类型
收费全文 | 68390篇 |
免费 | 4987篇 |
国内免费 | 237篇 |
专业分类
耳鼻咽喉 | 869篇 |
儿科学 | 1817篇 |
妇产科学 | 1498篇 |
基础医学 | 8590篇 |
口腔科学 | 1128篇 |
临床医学 | 6710篇 |
内科学 | 13775篇 |
皮肤病学 | 858篇 |
神经病学 | 6843篇 |
特种医学 | 2225篇 |
外国民族医学 | 4篇 |
外科学 | 10964篇 |
综合类 | 1145篇 |
现状与发展 | 1篇 |
一般理论 | 75篇 |
预防医学 | 6242篇 |
眼科学 | 1320篇 |
药学 | 4494篇 |
中国医学 | 75篇 |
肿瘤学 | 4981篇 |
出版年
2022年 | 495篇 |
2021年 | 1161篇 |
2020年 | 673篇 |
2019年 | 1105篇 |
2018年 | 1334篇 |
2017年 | 967篇 |
2016年 | 1073篇 |
2015年 | 1168篇 |
2014年 | 1931篇 |
2013年 | 2799篇 |
2012年 | 4097篇 |
2011年 | 4432篇 |
2010年 | 2474篇 |
2009年 | 2246篇 |
2008年 | 3983篇 |
2007年 | 4150篇 |
2006年 | 4103篇 |
2005年 | 4193篇 |
2004年 | 4094篇 |
2003年 | 3763篇 |
2002年 | 3694篇 |
2001年 | 837篇 |
2000年 | 742篇 |
1999年 | 893篇 |
1998年 | 868篇 |
1997年 | 757篇 |
1996年 | 679篇 |
1995年 | 635篇 |
1994年 | 571篇 |
1993年 | 522篇 |
1992年 | 570篇 |
1991年 | 593篇 |
1990年 | 557篇 |
1989年 | 510篇 |
1988年 | 472篇 |
1987年 | 474篇 |
1986年 | 431篇 |
1985年 | 512篇 |
1984年 | 620篇 |
1983年 | 504篇 |
1982年 | 595篇 |
1981年 | 577篇 |
1980年 | 564篇 |
1979年 | 361篇 |
1978年 | 391篇 |
1977年 | 352篇 |
1976年 | 290篇 |
1975年 | 292篇 |
1974年 | 338篇 |
1973年 | 264篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
43.
44.
The authors report a new case of abdominal pregnancy with living baby. The analysis of this observation permits to present then the clinical and paraclinical characteristics of this exceptional localization of pregnancy and emphasize the surgical principles involved with its treatment, around the time of the term delivery. 相似文献
45.
46.
Peter L. Forster Frank B. Schoenfeld Charles R. Marmar Ariel Janna Lang 《Journal of traumatic stress》1995,8(1):143-149
Irritability is often a problem for patients with Post-Traumatic Stress Disorder (PTSD). We describe two cases that illustrate the use of lithium in the treatment of veterans with PTSD who complained of serious problems with irritability or angry outbursts. These cases are discussed in the context of evidence that lithium may be useful in other patients with disorders of impulse control. The evidence linking disorders of anger and impulse control to a dysregulation in neurotransmitter regulation, particularly in serotonergic pathways, supports a psychopharmacologic approach to treatment. These findings should lead to further study of the role of lithium in the treatment of this symptom complex in patients with PTSD. 相似文献
47.
G. Bradley Schaefer James N. Thompson John B. Bodensteiner James M. McConnell William J. Kimberling Charles T. Gay William D. Dutton David C. Hutchings Stanton B. Gray 《Annals of neurology》1996,39(3):382-385
There are conflicting reports on the relationship between cerebellar vermal lobule hypoplasia and autism. Using quantitative magnetic resonance image analysis, we measured the cerebellar vermis in 125 normal individuals with a broad age range and 102 patients with a variety of neurogenetic abnormalities. We conclude that hypoplasia of cerebellar vermal lobules VI and VII is a nonspecific finding that even occurs in several conditions without autistic behavior. This suggests that it is not a specific neuroanatomical marker for autism, nor is cerebellar dys- genesis likely to be solely responsible for clinical autistic behaviors. 相似文献
48.
49.
Richard D. Chadderton Charles G. H. West Stephan Schulz D. Christopher Quirke Rao Gattamaneni Robert Taylor 《Child's nervous system》1995,11(8):443-448
Between 1954 and 1986 inclusive, 160 children in the North West Region of England were registered with histologically proven lowgrade astrocytomas (grade 1 or 2). Ten died before receiving any treatment, and a further seven died within 28 days of surgery, leaving 143 children whose survival in relation to treatment modality is the subject of this paper. Low-grade astrocytomas are responsive to radiation therapy. This treatment has no clear benefit to offer children with superficial tumours that can be resected completely or nearly so, but significantly improves survival rates when tumours are deep-seated and not amenable to excision. 相似文献
50.
Charles V. Clark 《Documenta ophthalmologica. Advances in ophthalmology》1990,74(4):277-285
The results of systemic autonomic nerve function studies in patients with closed-angle glaucoma and ocular hypertension are reviewed. Autonomic neuropathy has been demonstrated in 58% of patients with closed-angle glaucoma and 42% of ocular hypertensive subjects, with significantly increased prevalence in ocular hypertensives with narrow iridocorneal angles. The implications are discussed, with particular reference to the pathogenesis of raised intraocular pressure. 相似文献