全文获取类型
收费全文 | 3344篇 |
免费 | 399篇 |
国内免费 | 8篇 |
专业分类
耳鼻咽喉 | 64篇 |
儿科学 | 113篇 |
妇产科学 | 104篇 |
基础医学 | 482篇 |
口腔科学 | 84篇 |
临床医学 | 444篇 |
内科学 | 537篇 |
皮肤病学 | 159篇 |
神经病学 | 312篇 |
特种医学 | 96篇 |
外科学 | 332篇 |
综合类 | 63篇 |
一般理论 | 7篇 |
预防医学 | 417篇 |
眼科学 | 53篇 |
药学 | 189篇 |
中国医学 | 1篇 |
肿瘤学 | 294篇 |
出版年
2023年 | 30篇 |
2022年 | 49篇 |
2021年 | 101篇 |
2020年 | 78篇 |
2019年 | 94篇 |
2018年 | 106篇 |
2017年 | 72篇 |
2016年 | 97篇 |
2015年 | 66篇 |
2014年 | 98篇 |
2013年 | 153篇 |
2012年 | 209篇 |
2011年 | 178篇 |
2010年 | 121篇 |
2009年 | 124篇 |
2008年 | 183篇 |
2007年 | 167篇 |
2006年 | 167篇 |
2005年 | 172篇 |
2004年 | 131篇 |
2003年 | 151篇 |
2002年 | 108篇 |
2001年 | 42篇 |
2000年 | 47篇 |
1999年 | 52篇 |
1998年 | 40篇 |
1997年 | 38篇 |
1996年 | 20篇 |
1995年 | 23篇 |
1994年 | 36篇 |
1993年 | 22篇 |
1992年 | 49篇 |
1991年 | 42篇 |
1990年 | 35篇 |
1989年 | 43篇 |
1988年 | 37篇 |
1987年 | 43篇 |
1986年 | 39篇 |
1985年 | 29篇 |
1984年 | 28篇 |
1983年 | 30篇 |
1982年 | 30篇 |
1981年 | 23篇 |
1980年 | 24篇 |
1979年 | 31篇 |
1978年 | 29篇 |
1977年 | 20篇 |
1974年 | 30篇 |
1973年 | 20篇 |
1972年 | 24篇 |
排序方式: 共有3751条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
Paul Steinbok Ken Poskitt D. Douglas Cochrane O. Olof Flodmark 《Child's nervous system》1991,7(1):16-20
Enhanced and non-enhanced computed tomography (CT) brain scans were performed within 72 h of surgery on 21 children in whom brain tumors had been resected totally or subtotally, and scans were repeated at varying intervals thereafter. Biopsies of the resection margins were performed in 12 patients at the end of the surgical procedure. The immediate CT scan showed enhancement in the resection margin in 13 of the 21 patients and in 9 of the 13, the enhancement disappeared on follow-up scans. There was discordance between the results of immediate CT scan examination and the biopsies of the resection margins in 7 of the 12 cases. The advantages and disadvantages of an immediate postoperative scan versus a more delayed CT scan are discussed. 相似文献
5.
D D Cochrane K J Poskitt M G Norman 《The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques》1991,18(2):181-195
Cerebral dysgenesis encompasses varied disorders of brain development. Based on the understanding of these conditions provided by histopathologists, embryologists, radiologists and developmental pediatricians, surgeons are able to appropriately assist in the care of these patients. The surgeon can offer assessment of the ventriculomegaly that commonly accompanies cerebral dysgenesis in addition to providing methods to control hydrocephalus, to reconstruct cranial and facial malformations and to remove dysfunctional tissue. For most patients, surgical intervention is only one of the many factors that determine developmental prognosis. Based on the foundation built by other specialists, this review discusses cerebral dysgenesis from the perspective of historical and current surgical interventions. 相似文献
6.
7.
8.
Acute severe asthma: oxygen and high dose beta agonist during transfer for all? 总被引:1,自引:1,他引:0
下载免费PDF全文
![点击此处可从《Thorax》网站下载免费的PDF全文](/ch/ext_images/free.gif)
G M Cochrane 《Thorax》1995,50(1):1-2
9.
Aims and Objectives The significance of beaten copper appearance (BCA) on skull radiographs in children following surgery for isolated sagittal
craniosynostosis has not been studied. This study was designed to look for any correlation between BCA and symptoms suggestive
of intracranial hypertension in this group of patients.
Materials and Methods Forty-eight consecutive children, who were operated for isolated sagittal synostosis from1987 to 2000 and had postoperative
skull radiographs, were included. Patients were divided into: (a) BCA group (n = 20), consisting of children who had beaten copper appearance on skull radiographs at last follow up, and (b) Non-BCA group
(n = 28), consisting of children who did not have this finding. Records were reviewed to look for symptoms suggestive of intracranial
hypertension, such as headache, head banging, and irritability.
Results Median age at surgery was 4.8 months for BCA group and 4 months for the non-BCA group. Follow up ranged from 4 to 156 months
with a mean of 36.2 months. Total of 28.6% (n = 6) of the children with follow up radiographs done at ≤18 months of age had BCA. The incidence of BCA increased to 83.3%
in children with skull radiographs performed after 48 months of age. In 18 (90%) children, the BCA was ‘diffuse’ with 5 (25%)
children having the maximum possible score of 8. In the BCA group, 45% (n = 9) had symptoms compared to 10.7% (n = 3) in the control group (p = 0.0068).
Conclusions This study suggests a significant number of children with BCA on radiographs develop symptoms suggestive of raised ICP following
surgical treatment in infancy and prolonged follow up may be warranted in this group of patients. 相似文献
10.