全文获取类型
收费全文 | 529篇 |
免费 | 13篇 |
专业分类
耳鼻咽喉 | 11篇 |
儿科学 | 21篇 |
妇产科学 | 8篇 |
基础医学 | 133篇 |
口腔科学 | 2篇 |
临床医学 | 18篇 |
内科学 | 99篇 |
皮肤病学 | 18篇 |
神经病学 | 13篇 |
特种医学 | 12篇 |
外科学 | 59篇 |
综合类 | 6篇 |
预防医学 | 83篇 |
眼科学 | 8篇 |
药学 | 9篇 |
肿瘤学 | 42篇 |
出版年
2023年 | 2篇 |
2022年 | 3篇 |
2021年 | 10篇 |
2020年 | 4篇 |
2019年 | 14篇 |
2018年 | 9篇 |
2017年 | 7篇 |
2016年 | 7篇 |
2015年 | 11篇 |
2014年 | 14篇 |
2013年 | 22篇 |
2012年 | 34篇 |
2011年 | 62篇 |
2010年 | 35篇 |
2009年 | 30篇 |
2008年 | 46篇 |
2007年 | 38篇 |
2006年 | 35篇 |
2005年 | 18篇 |
2004年 | 12篇 |
2003年 | 21篇 |
2002年 | 9篇 |
2001年 | 22篇 |
2000年 | 9篇 |
1999年 | 12篇 |
1997年 | 3篇 |
1993年 | 2篇 |
1992年 | 9篇 |
1991年 | 3篇 |
1990年 | 3篇 |
1989年 | 3篇 |
1988年 | 2篇 |
1987年 | 3篇 |
1985年 | 2篇 |
1983年 | 2篇 |
1981年 | 1篇 |
1979年 | 1篇 |
1976年 | 1篇 |
1975年 | 2篇 |
1974年 | 1篇 |
1972年 | 1篇 |
1970年 | 1篇 |
1969年 | 1篇 |
1968年 | 2篇 |
1967年 | 1篇 |
1966年 | 2篇 |
1965年 | 1篇 |
1964年 | 1篇 |
1944年 | 1篇 |
1936年 | 1篇 |
排序方式: 共有542条查询结果,搜索用时 15 毫秒
1.
2.
Three-dimensional reconstruction in routine computerized tomography of the skull and spine. Experience based on 161 cases. 总被引:1,自引:0,他引:1
L Bonnier K Ayadi A Vasdev G Crouzet B Raphael 《Journal of neuroradiology. Journal de neuroradiologie》1991,18(3):250-266
Three-dimensional (3D) reconstruction in routine computerized tomography (CT) presupposes that the referring clinicians are motivated, software programs are of good quality, a second working console is available and manipulations are made by experienced persons. Maxillofacial surgery is the main, conventional indication, but the method is also used to plan the surgical treatment of craniofacial malformations and that of injuries and tumours. 3D reconstruction cannot replace a thorough analysis of the acquisition sections since its spatial definition is not as good as theirs. Without competing with pure research-work, a number of applications remain in the realm of speculative imaging, but it cannot be denied that 3D reconstruction has an interesting potential for teaching. 相似文献
3.
H Skouri H Soua B Seket H Elomri K Mounastiri A Ayadi M N Gueddiche M T Sfar P Bierling 《Archives de pédiatrie》2003,10(10):887-890
Alloimmune thrombocytopenia is due to feto-maternal incompatibility in the HPA systems and is usually considered in the diagnosis of neonatal thrombocytopenia after other causes have been excluded. We report on two Tunisian observations of alloimmune neonatal thrombocytopenia due to anti-HPA-5b (Bra) antibodies. CASE REPORT: Two neonates presented at birth with a thrombocytopenic purpura unexplained by usual causes of neonatal thrombocytopenia. Alloimmune neonatal thrombocytopenia was diagnosed by the determination of parental and neonatal platelets antigens phenotypes and by the presence of HPA-5b (antiBra) antibodies in maternal sera. A favourable evolution was obtained after maternal platelet transfusions. CONCLUSION: Alloimmune neonatal thrombocytopenia is a serious affection, which exposes to intracranial haemorrhage. These observations of HPA-5 neonatal alloimmunisation in Tunisia provide additional information on the geographic distribution of the disease and its prognosis. 相似文献
4.
Infusion of 1 μg of carbachol, a potent cholinergic agonist, into the lateral septum of the urethane-anaesthetized rat systematically caused the induction of clear-cut hippocampal theta (θ). However, infusion of an equivalent amount of the drug into the hippocampus, close to the recording electrode, failed to induce θ in 50% of the animals and produced a mixture of θ waves and desynchronized activity, resulting in atypical EEG patterns, in the remaining subjects. Both carbachol EEG effects were blocked by intraseptal infusion of the antimuscarinic agent, atropine. Our data demontrate that muscarinic receptors in the septum are predominent sites for cholinergic agonist-antagonist action capable of generating or suppressing hippocampal θ in the rat. They also indicate that intraseptal cholinergic mechanisms play an important role in the initiation and generation of this rhythm. 相似文献
5.
Tlili A Charfedine I Lahmar I Benzina Z Mohamed BA Weil D Idriss N Drira M Masmoudi S Ayadi H 《Human mutation》2005,25(5):503
Approximately 80% of hereditary hearing loss is non-syndromic. Non-syndromic deafness is the most genetically heterogeneous trait. The most common and severe form of hereditary hearing impairment is autosomal recessive non-syndromic hearing loss (ARNSHL), accounting for approximately 80% of cases of genetic deafness. To date, 22 genes implicated in ARNSHL have been identified. Recently a gene, DFNB31/WHRN, which encodes a putative PDZ scaffold protein called whirlin, was found to be responsible for the ARNSHL DFNB31. We found evidence for linkage to the DFNB31locus in a consanguineous Tunisian family segregating congenital profound ARNSHL. Mutation screening of DFNB31/WHRNrevealed four nonpathogenic sequence variants and a novel frameshift mutation [c.2423delG] + [c.2423delG] that changed the reading frame and induced a novel stop codon at amino acid 818 ([p.Gly808AspfsX11] + [p.Gly808AspfsX11]). To determine the contribution of the DFNB31locus in the childhood deafness, we performed linkage analysis in 62 unrelated informative families affected with ARNSHL. No linkage was found to this locus. From this study, we concluded that DFNB31/WHRN is most likely to be a rare cause of ARNSHL in the Tunisian population. 相似文献
6.
7.
8.
9.
10.