全文获取类型
收费全文 | 540篇 |
免费 | 41篇 |
国内免费 | 13篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 37篇 |
妇产科学 | 8篇 |
基础医学 | 71篇 |
口腔科学 | 9篇 |
临床医学 | 33篇 |
内科学 | 110篇 |
皮肤病学 | 20篇 |
神经病学 | 11篇 |
特种医学 | 139篇 |
外科学 | 59篇 |
综合类 | 20篇 |
预防医学 | 22篇 |
眼科学 | 6篇 |
药学 | 21篇 |
肿瘤学 | 27篇 |
出版年
2022年 | 1篇 |
2021年 | 6篇 |
2020年 | 2篇 |
2019年 | 2篇 |
2018年 | 5篇 |
2017年 | 3篇 |
2016年 | 6篇 |
2015年 | 14篇 |
2014年 | 7篇 |
2013年 | 10篇 |
2012年 | 5篇 |
2011年 | 15篇 |
2010年 | 24篇 |
2009年 | 33篇 |
2008年 | 15篇 |
2007年 | 27篇 |
2006年 | 21篇 |
2005年 | 23篇 |
2004年 | 20篇 |
2003年 | 11篇 |
2002年 | 8篇 |
2001年 | 16篇 |
2000年 | 7篇 |
1999年 | 1篇 |
1998年 | 21篇 |
1997年 | 38篇 |
1996年 | 23篇 |
1995年 | 26篇 |
1994年 | 17篇 |
1993年 | 8篇 |
1992年 | 7篇 |
1991年 | 3篇 |
1990年 | 9篇 |
1989年 | 15篇 |
1988年 | 12篇 |
1987年 | 16篇 |
1986年 | 13篇 |
1985年 | 14篇 |
1984年 | 9篇 |
1983年 | 9篇 |
1982年 | 14篇 |
1981年 | 11篇 |
1980年 | 12篇 |
1979年 | 3篇 |
1978年 | 8篇 |
1977年 | 8篇 |
1976年 | 10篇 |
1975年 | 5篇 |
1974年 | 1篇 |
排序方式: 共有594条查询结果,搜索用时 687 毫秒
71.
AG Affleck SM Littlewood 《Journal of the European Academy of Dermatology and Venereology》2005,19(3):360-363
INTRODUCTION: The diagnosis of adult-onset Still's disease (AOSD) can be very difficult. There are no specific tests and reliance is usually placed on a symptom complex and the well described typical rash seen in most patients. In recent years, however, other cutaneous manifestations of AOSD have been reported but these are not so well known. OBSERVATIONS: We report a patient with urticaria and fixed plaques and review the other 'atypical' cutaneous findings associated with AOSD. CONCLUSIONS: The diagnosis of AOSD can be made in the absence of the typical Still's rash but in the presence of other atypical cutaneous features. 相似文献
72.
AG Hamburg-Blankenese 《MedR Medizinrecht》2005,23(10):607-609
Abstrakt Ein Vertragsarzt darf seine psychotherapeutischen Leistungen bis zur H?he der EBM-Betr?ge bei dem Kassenpatienten liquidieren,
wenn die Krankenkasse die erforderliche Zustimmung versagt und der Patient in Kenntnis der Ablehnung die Therapie fortführt.
(Leitsatz des Bearbeiters) 相似文献
73.
AG Kalayci B Adam F Yilmazer S Uysal N Gürses 《Acta paediatrica (Oslo, Norway : 1992)》1997,86(9):999-1002
Serum IgG, IgGl, G2, G3, G4, IgM, C3c and C4 concentrations were measured in 24 term neonates with sepsis and 17 healthy normal neonates of similar age, sex and weight (control group). The serum IgG, IgG1, G2, G3, G4, IgM, C3c, and C4 levels were similar in the patients with sepsis and the control group ( p > 0. 05). In the neonates with sepsis, serum IgG, G1, G2, IgM and C4 levels were not significantly different between the 1st and 10th days, while there were significant differences for IgG3, G4 and C3c ( p < 0. 05). We conclude that the serum levels of IgG, IgG1, G2, G3, G4, IgM, C3c and C4 concentrations are of no value for the early diagnosis of neonatal sepsis. 相似文献
74.
75.
J Ottenkamp A C Wenink J M Quaegebeur J Rohmer A C Gittenberger-de Groot A G Brom F Fontan 《The Journal of thoracic and cardiovascular surgery》1985,89(4):597-603
An anatomic study of 28 heart specimens with tricuspid atresia showed 15 hearts with ventriculoarterial concordance and a right-sided anterior outlet chamber. Of these 15 hearts, 12 showed evidence of restricted pulmonary blood flow. In eight of these 12 specimens, an anterior deviation of the outlet septum, relative to the primary septum, was present. This deviation caused a narrowing inside the outlet chamber and functioned as infundibular pulmonary stenosis. The outlet chambers of the 15 hearts with ventriculoarterial concordance were compared with those of 13 hearts with tricuspid atresia and ventriculoarterial discordance and also a right-sided anterior outlet chamber. In the latter group of 13 hearts, five showed evidence of restricted pulmonary blood flow, at least partially caused by posterior deviation of the outlet septum relative to the primary septum. A clear difference in outlet chamber morphology was found without exception between specimens with and without ventriculoarterial concordance. Clinical data in three long-term survivors of the Fontan procedure demonstrate that the special morphology of the outlet chamber can pose surgical problems. Especially in patients with ventriculoarterial concordance, when the outlet chamber is incorporated into the pulmonary circuit, the surgeon must give special attention to the specific morphology to prevent undesirable sequelae. 相似文献
76.
Because knowledge of spatial morphology of the human embryonic heart mainly derives from serial microscopic sections and from reconstructions based on such series, it might be questioned whether the results obtained are comparable with animal studies in which scanning electron microscopy is used. Therefore, pig embryo hearts of the same developmental stage were processed for routine histological sectioning as well as for scanning electron microscopy. A graphic reconstruction was made of a right ventricular view, to be compared with a similar scanning micrograph. The two images, produced by much different techniques, were strikingly similar. In addition, the graphic reconstruction technique is complementary to scanning electron microscopy, because histological details can be introduced. 相似文献
77.
AG MacIver 《Journal of clinical pathology》1989,42(10):1119-1120
78.
Basilar venous plexus of the posterior fossa: a potential source of error in petrosal sinus sampling
Sampling of serum from the inferior petrosal sinus can provide important information about the source of elevated adrenocorticotropic hormone (ACTH) levels. This often leads to improved results of pituitary surgery for Cushing disease. The authors describe a successful catheterization technique and illustrate the venous anatomy of the inferior petrosal sinuses and basilar plexus. 相似文献
79.
80.
Acquired C1-esterase inhibitor deficiency: Three case reports and commentary on the syndrome 总被引:1,自引:0,他引:1
TK Lipscombe DI Orton AG Bird JD Wilkinson 《The Australasian journal of dermatology》1996,37(3):145-148
Acquired C1-esterase inhibitor deficiency is a rare syndrome which usually presents with episodes of angioedema. Most patients have an underlying lymphoproliferative disorder. It is important to gastroenterologists, haematologists, immunologists and dermatologists, as these are the more likely specialties to which the patient will present. Recognition of the syndrome is important not only for diagnostic purposes but for investigating and treating any associated underlying lymphoproliferative disorders. In some instances the angioedema may precede the lymphoma by many years. Optimal patient management requires that both angioedema and the underlying lymphoma be recognized and treated. 相似文献