全文获取类型
收费全文 | 2359篇 |
免费 | 140篇 |
国内免费 | 57篇 |
专业分类
耳鼻咽喉 | 6篇 |
儿科学 | 105篇 |
妇产科学 | 43篇 |
基础医学 | 335篇 |
口腔科学 | 48篇 |
临床医学 | 232篇 |
内科学 | 509篇 |
皮肤病学 | 71篇 |
神经病学 | 117篇 |
特种医学 | 364篇 |
外科学 | 293篇 |
综合类 | 28篇 |
预防医学 | 148篇 |
眼科学 | 15篇 |
药学 | 95篇 |
中国医学 | 2篇 |
肿瘤学 | 145篇 |
出版年
2023年 | 13篇 |
2022年 | 16篇 |
2021年 | 15篇 |
2020年 | 24篇 |
2019年 | 23篇 |
2018年 | 32篇 |
2017年 | 24篇 |
2016年 | 25篇 |
2015年 | 26篇 |
2014年 | 42篇 |
2013年 | 78篇 |
2012年 | 73篇 |
2011年 | 85篇 |
2010年 | 99篇 |
2009年 | 109篇 |
2008年 | 80篇 |
2007年 | 122篇 |
2006年 | 95篇 |
2005年 | 94篇 |
2004年 | 88篇 |
2003年 | 68篇 |
2002年 | 73篇 |
2001年 | 70篇 |
2000年 | 60篇 |
1999年 | 48篇 |
1998年 | 83篇 |
1997年 | 90篇 |
1996年 | 105篇 |
1995年 | 74篇 |
1994年 | 63篇 |
1993年 | 60篇 |
1992年 | 29篇 |
1991年 | 33篇 |
1990年 | 38篇 |
1989年 | 50篇 |
1988年 | 49篇 |
1987年 | 48篇 |
1986年 | 60篇 |
1985年 | 49篇 |
1984年 | 10篇 |
1983年 | 21篇 |
1982年 | 21篇 |
1981年 | 15篇 |
1980年 | 14篇 |
1979年 | 14篇 |
1978年 | 22篇 |
1977年 | 11篇 |
1976年 | 16篇 |
1975年 | 19篇 |
1974年 | 7篇 |
排序方式: 共有2556条查询结果,搜索用时 0 毫秒
1.
2.
3.
Johan Siebert Klara M. Posfay-Barbe† Walid Habre‡ Claire-Anne Siegrist 《Paediatric anaesthesia》2007,17(12):1218-1220
4.
A. Krödel B. Krauss H. J. Refior C. H. Siebert 《Archives of orthopaedic and trauma surgery》1990,109(3):133-138
Summary Twenty-nine patients were examined by magnetic resonance imaging for various lesions of the spine. The results of these scans were compared with those of plain radiographs, computertomographs, and radionuclide bone scans. The findings were substantiated by intraoperative or histological findings in 18 cases. The MRI scans proved to be very sensitive in the detection of a wide spectrum of morphological changes of the bone marrow of vertebral bodies. Characteristic changes of the signal patterns for inflammatory and tumorous lesions were not observed. The differentiation of these lesions will presently continue to have to be based on morphological criteria.No benefits in any form have been received or will be received from a commercial party related directly or indirectly to the subject of this study. No funds were received in support of this study 相似文献
5.
6.
7.
8.
JC Sitek† M Loeb‡ JR Ronnevig¶ 《Journal of the European Academy of Dermatology and Venereology》2007,21(7):891-896
BACKGROUND: Since 1997, a number of trials have shown promising results in treating generalized vitiligo with narrowband ultraviolet B (UVB) both in adults and children. However, there is little knowledge concerning the duration and permanency of the treatment-induced repigmentation. OBJECTIVE: Our main objective was to perform a follow-up trial of successfully treated patients receiving narrowband UVB for generalized vitiligo. METHODS: We have investigated to what degree the treatment-induced repigmentation remains stable for up to 2 years post-treatment. We performed an initial open trial including 31 patients with generalized vitiligo. They received narrowband UVB thrice weekly for up to 12 months. Patients experiencing > 75% repigmentation were defined responders and were included in the follow-up trial. Responders were followed every 6 months for up to 2 years after cessation of treatment. We observed the pigmentation status and registered any changes indicating loss of pigmentation and relapse. RESULTS: Eleven of the 31 treated patients were included in the follow-up trial. Six patients had relapse and five patients had stable response 24 months after cessation of treatment. Four out of six relapses were within 6 months post-treatment. CONCLUSION: In our study population of 31 patients with generalized vitiligo, five patients (16%) experienced > 75% stable repigmentation 2 years after cessation of a treatment programme of up to 1 years narrowband UVB therapy. 相似文献
9.
Pernes JM; Vitoux JF; Brenoit P; Raynaud A; Parola JL; Roth JP; Angel CY; Fiessinger JN; Roncato M; Gaux JC 《Radiology》1986,158(2):481-485
Thirty-five patients hospitalized for recent angiographically documented arterial occlusion in the legs (27 femoropopliteal arteries and eight grafts) benefited from local fibrinolytic therapy delivered at the site of the occlusion with a 4- or 5-F catheter. This therapy combined a continuous urokinase (UK) infusion of 1,000 U/kg/hour and a lysyl plasminogen (LYS-PLG) infusion of 15 microkatals every 30 minutes. Angiographically confirmed lysis was obtained in 85% of the cases. Only 3% of the patients had major and 6% had minor groin hematomas. Only two patients had concentrations of fibrinogen as low as 100 mg/dl. Intravascular infusion of UK-LYS-PLG is as effective as streptokinase. Its excellent tolerance makes it a good alternative in the treatment of acute ischemia in the lower limbs. 相似文献
10.
R. Siebert C. Willers W. Bardenheuer S. Michaelis A. Lux A. Schramm A. Gockel H. Luboldt B. Opalka J. Schütte 《Journal of cancer research and clinical oncology》1995,121(Z1):A36
contributed equally to this work 相似文献