全文获取类型
收费全文 | 1168篇 |
免费 | 73篇 |
国内免费 | 34篇 |
专业分类
耳鼻咽喉 | 16篇 |
儿科学 | 28篇 |
妇产科学 | 6篇 |
基础医学 | 182篇 |
口腔科学 | 10篇 |
临床医学 | 132篇 |
内科学 | 254篇 |
皮肤病学 | 7篇 |
神经病学 | 85篇 |
特种医学 | 240篇 |
外国民族医学 | 6篇 |
外科学 | 112篇 |
综合类 | 22篇 |
预防医学 | 78篇 |
眼科学 | 13篇 |
药学 | 51篇 |
中国医学 | 1篇 |
肿瘤学 | 32篇 |
出版年
2022年 | 8篇 |
2021年 | 15篇 |
2020年 | 11篇 |
2019年 | 16篇 |
2018年 | 15篇 |
2017年 | 11篇 |
2016年 | 8篇 |
2015年 | 26篇 |
2014年 | 23篇 |
2013年 | 28篇 |
2012年 | 44篇 |
2011年 | 38篇 |
2010年 | 28篇 |
2009年 | 46篇 |
2008年 | 45篇 |
2007年 | 58篇 |
2006年 | 75篇 |
2005年 | 66篇 |
2004年 | 42篇 |
2003年 | 33篇 |
2002年 | 43篇 |
2001年 | 39篇 |
2000年 | 36篇 |
1999年 | 49篇 |
1998年 | 37篇 |
1997年 | 43篇 |
1996年 | 27篇 |
1995年 | 16篇 |
1994年 | 11篇 |
1993年 | 19篇 |
1992年 | 23篇 |
1991年 | 22篇 |
1990年 | 19篇 |
1989年 | 31篇 |
1988年 | 30篇 |
1987年 | 20篇 |
1986年 | 27篇 |
1985年 | 19篇 |
1984年 | 13篇 |
1983年 | 10篇 |
1982年 | 11篇 |
1981年 | 7篇 |
1979年 | 9篇 |
1978年 | 7篇 |
1977年 | 11篇 |
1976年 | 6篇 |
1974年 | 8篇 |
1973年 | 5篇 |
1969年 | 6篇 |
1967年 | 4篇 |
排序方式: 共有1275条查询结果,搜索用时 15 毫秒
1.
Marcel Toussaint Raymond J. Gilles Noura Azzabou Benjamin Marty Alexandre Vignaud Andreas Greiser Pierre G. Carlier 《Medicine》2015,94(43)
Delayed contrast enhancement after injection of a gadolinium-chelate (Gd-chelate) is a reference imaging method to detect myocardial tissue changes. Its localization within the thickness of the myocardial wall allows differentiating various pathological processes such as myocardial infarction (MI), inflammatory myocarditis, and cardiomyopathies. The aim of the study was first to characterize benign myocarditis using quantitative delayed-enhancement imaging and then to investigate whether the measure of the extracellular volume fraction (ECV) can be used to discriminate between MI and myocarditis.In 6 patients with acute benign myocarditis (32.2 ± 13.8 year-old, subepicardial late gadolinium enhancement [LGE]) and 18 patients with MI (52.3 ± 10.9 year-old, subendocardial/transmural LGE), myocardial T1 was determined using the Modified Look-Locker Imaging (MOLLI) sequence at 3 Tesla before and after Gd-chelate injection. T1 values were compared in LGE and normal regions of the myocardium. The myocardial T1 values were normalized to the T1 of blood, and the ECV was calculated from T1 values of myocardium and blood pre- and post-Gd injection.In both myocarditis and MI, the T1 was lower in LGE regions than in normal regions of the left ventricle. T1 of LGE areas was significantly higher in myocarditis than in MI (446.8 ± 45.8 vs 360.5 ± 66.9 ms, P = 0.003) and ECV was lower in myocarditis than in MI (34.5 ± 3.3 vs 53.8 ± 13.0 %, P = 0.004).Both inflammatory process and chronic fibrosis induce LGE (subepicardial in myocarditis and subendocardial in MI). The present study demonstrates that the determination of T1 and ECV is able to differentiate the 2 histological patterns.Further investigation will indicate whether the severity of ECV changes might help refine the predictive risk of LGE in myocarditis. 相似文献
2.
SG Hannover 《MedR Medizinrecht》2006,24(9):547-551
Abstrakt 1. § 95b Abs. 3 S. 1 SGB V normiert eine Schuldübernahme i.S. des § 69 S. 3 SGB V i.V. mit § 414 BGB.
2. Ein Vertrags(zahn)arzt, der in einem mit Kollegen aufeinander abgestimmten Verfahren oder Verhalten auf seine Zulassung
verzichtet, ist im Anschluss hieran nicht berechtigt, nach Ma?gabe des § 95 Abs. 3 SGB V Versicherte der gesetzlichen Krankenversicherung
als Behandlungsf?lle, die erst nach dem Verzicht aufgenommen werden, zu behandeln. (Leits?tze des Bearbeiters) 相似文献
3.
C Carlier J P Moulia-Pelat J F Ceccon M S Mourey B Ameline M Fall M N'Diaye O Amédée-Manesme 《The American journal of clinical nutrition》1991,53(1):70-73
The purpose of our study was to determine the prevalence of protein-calorie malnutrition (PCM), ocular diseases, and vitamin A deficiency in preschool children selected at random in a rural zone of the groundnut belt of Senegal. The prevalence of PCM was 37.1% (95% CI 33.8-40.2%) according to the Waterlow classification, with a majority of stunting, and prevalence of hypovitaminosis A was estimated to be 11.4% (95% CI 9.3-13.5%) by using impression cytology. Furthermore, 19.4% (95% CI 15.8-22.0%) of the children might be defined at risk of deficiency. The prevalence of Bitot's spots was equal to 0.2% (95% CI 0.03-0.9%). A problem of PCM associated with a health-endangering vitamin A deficiency existed. 相似文献
4.
Brian A Haluska Robert Fathi Leanne Jeffriess Rodel Leano Stephane G Carlier Thomas H Marwick 《Journal of the American Society of Echocardiography》2004,17(2):195-202; quiz 203-4
BACKGROUND: Brachial artery reactivity (BAR), carotid intima-media thickness (IMT), and applanation tonometry for evaluation of total arterial compliance may provide information about preclinical vascular disease. We sought to determine whether these tests could be used to identify patients with coronary artery disease (CAD) without being influenced by their ability to identify those at risk for CAD developing. METHODS: We studied 100 patients and compared 3 groups: 35 patients with known CAD; 34 patients with symptoms and risk factors but no CAD identified by stress echocardiography (risk group); and 31 control subjects. BAR and IMT were measured using standard methods, and total arterial compliance was calculated by the pulse-pressure method from simultaneous radial applanation tonometry and pulsed wave Doppler of the left ventricular outflow. Ischemia was identified as a new or worsening wall-motion abnormality induced by stress. RESULTS: In a comparison between the control subjects and patients either at risk for developing CAD or with CAD, the predictors of risk for CAD were: age (P =.01); smoking history (P =.002); hypercholesterolemia (P =.002); and hypertension (P =.004) (model R = 0.82; P =.0001). The independent predictors of CAD were: IMT (P =.001); BAR (P =.04); sex (P =.005); and hypertension (P =.005) (model R = 0.80; P =.0001). CONCLUSION: IMT, BAR, and traditional cardiovascular risk factors appear to identify patients at risk for CAD developing. However, only IMT was significantly different between patients at risk for developing CAD and those with overt CAD. 相似文献
5.
Angelo M. Carella Sandro Nati Paolo Carlier Daniela Pierluigi Domenico Giordano Angela Congiu Gino Santini Daniele Scarpati Salvina Barra Renzo Corvo Vito Vitale Maria R. Raffo Raffaella Cerri Marco Risso Mauro Spriano Renato Vimercati Ester Pungolino Andrea Bacigalupo Eugenio Damasio 《Leukemia & lymphoma》1991,5(1):43-47
Forty consecutive adult patients under the age of 50 with acute non-lymphoblastic leukemia (ANLL) in first complete remission, underwent autologous bone marrow transplantation (ABMT) between March 1984 and April 1990. The conditioning regimen employed included cyclophosphamide and total body irradiation, followed by the administration of unpurged ABMT. The median time from diagnosis to transplant was 7 months (3-15 months), and the median time from complete remission to ABMT was 4 months (range 3-9 months). Twenty-two (51%) patients remain in complete remission 6-81 months (median 24 months) after ABMT.
The causes of death were, recurrent leukemia (11 patients), parenchymal toxicities such as acute respiratory distress syndrome and veno-occlusive disease (3 patients), hemorrhage (2 patients) and infection (2 patients). Eleven patients relapsed after 3-12 months (median 5 months). This study has produced survival data comparable to those of other institutions employing TBI for either allo or autotransplants. 相似文献
The causes of death were, recurrent leukemia (11 patients), parenchymal toxicities such as acute respiratory distress syndrome and veno-occlusive disease (3 patients), hemorrhage (2 patients) and infection (2 patients). Eleven patients relapsed after 3-12 months (median 5 months). This study has produced survival data comparable to those of other institutions employing TBI for either allo or autotransplants. 相似文献
6.
ZQ Yin MD SG Crewther PhD B Pirie BSc DP Crewther PhD 《Clinical & experimental ophthalmology》1997,25(4):107-109
Purpose: It was investigated whether alterations in neuronal structure and function occasioned by strabismic amblyopia also may be reflected in alterations in the expression on Y type neurons of a Cat-301 antibody sensitive antigen in the lateral geniculate nucleus (LGN) and cortex of our cat model of strabismic amblyopia. Methods/Results: The percentage of positively labelled cells was reduced in LGN laminae that received input from the deviated eye in strabismic amblyopic cats compared with normal cats. In the strabismic cortex, the density of immunopositive neurons was significantly reduced compared with normal, the effect being most pronounced in layer IV Conclusions: Despite previous physiological recordings indicating a decrease in X-cell associated acuity in strabismic amblyopia, the present findings imply that the changes in the early visual experience occasioned by strabismus also produce specific molecular changes in theY neuronal class. 相似文献
7.
8.
Established nonexpanding hematomas can be successfully treated with minimal morbidity using standard liposucstion techniques at the bedside or in an outpatient setting under local anesthesia. The authors presents a series of eight patients and discuss current concepts of dealing with this common and distressing surgical complication. 相似文献
9.
SG Berlin 《MedR Medizinrecht》2007,25(7):451-453
Abstrakt Bei der Bestimmung des Individualbudgets eines haus?rztlich t?tigen Vertragsarztes sind auch von diesem im Bemessungszeitraum
zul?ssig erbrachte sog. „KO-Leistungen“ zu berücksichtigen. Es ist irrelevant, wenn diese Leistungen nach Ende des Bemessungszeitraums
vom Leistungserbringer nicht mehr abgerechnet werden dürfen. (Leitsatz des Bearbeiters) 相似文献
10.