全文获取类型
收费全文 | 1136035篇 |
免费 | 103943篇 |
国内免费 | 4823篇 |
专业分类
耳鼻咽喉 | 17777篇 |
儿科学 | 39517篇 |
妇产科学 | 30646篇 |
基础医学 | 148002篇 |
口腔科学 | 29113篇 |
临床医学 | 115020篇 |
内科学 | 236821篇 |
皮肤病学 | 30012篇 |
神经病学 | 92591篇 |
特种医学 | 44182篇 |
外国民族医学 | 305篇 |
外科学 | 187430篇 |
综合类 | 23958篇 |
现状与发展 | 72篇 |
一般理论 | 388篇 |
预防医学 | 84174篇 |
眼科学 | 25765篇 |
药学 | 72666篇 |
3篇 | |
中国医学 | 2037篇 |
肿瘤学 | 64322篇 |
出版年
2021年 | 9568篇 |
2020年 | 9854篇 |
2019年 | 9200篇 |
2018年 | 17300篇 |
2017年 | 15007篇 |
2016年 | 17128篇 |
2015年 | 18292篇 |
2014年 | 28869篇 |
2013年 | 36462篇 |
2012年 | 33939篇 |
2011年 | 35815篇 |
2010年 | 28069篇 |
2009年 | 30670篇 |
2008年 | 34086篇 |
2007年 | 34120篇 |
2006年 | 36912篇 |
2005年 | 33073篇 |
2004年 | 31702篇 |
2003年 | 29611篇 |
2002年 | 28699篇 |
2001年 | 50476篇 |
2000年 | 50830篇 |
1999年 | 43237篇 |
1998年 | 14571篇 |
1997年 | 13288篇 |
1996年 | 13249篇 |
1995年 | 12705篇 |
1994年 | 10855篇 |
1993年 | 9926篇 |
1992年 | 33498篇 |
1991年 | 32746篇 |
1990年 | 31979篇 |
1989年 | 30933篇 |
1988年 | 28110篇 |
1987年 | 28099篇 |
1986年 | 26234篇 |
1985年 | 25257篇 |
1984年 | 18888篇 |
1983年 | 15985篇 |
1982年 | 9755篇 |
1979年 | 17144篇 |
1978年 | 12515篇 |
1977年 | 10668篇 |
1976年 | 9963篇 |
1975年 | 10426篇 |
1974年 | 12517篇 |
1973年 | 12043篇 |
1972年 | 11156篇 |
1971年 | 10300篇 |
1970年 | 9599篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
B. S. Sharma Sumit Sinha V. S. Mehta A. Suri Aditya Gupta A. K. Mahapatra 《Child's nervous system》2007,23(3):327-333
Object Intracranial aneurysms are rare in children and have different epidemiological, clinical, and morphological characteristics
and outcome from those in adults.
Materials and methods We analyzed demographic, clinical, radiologic features, treatment, and outcome in 55 patients <18 years of age, treated from
Jan 1995 through December 2005.
Results Intracranial aneurysms in children below 18 years constituted 4% of all intracranial aneurysms. Internal Carotid artery (ICA)
bifurcation was the commonest location. About half of the aneurysms were complex. Three-fourth of the patients required surgical
treatment. Two patients died, constituting 5% mortality. Two patients (5%) had poor outcome, whereas the majority (90%) had
a favorable outcome.
Conclusions Pediatric aneurysms have male predominance, higher incidence of clinical features of mass effect or seizures, high incidence
of large, traumatic/mycotic aneurysms, associated illnesses and ICH/IVH and hydrocephalus, better Hunt and Hess grades at
presentation, ICA bifurcation as the commonest site, and better outcome than their adult counterparts. 相似文献
992.
Four-Year Follow-up on Endovascular Radiofrequency Obliteration of Great Saphenous Reflux 总被引:4,自引:0,他引:4
Merchant Robert F. MD Pichot Olivier MD † Myers Kenneth A. MD ‡ 《Dermatologic surgery》2005,31(2):129-134
BACKGROUND: Endovascular radiofrequency obliteration has been used since 1998 as an alternative to conventional vein stripping surgery for elimination of saphenous vein insufficiency. OBJECTIVE: To demonstrate the long-term efficacy of this treatment modality. METHODS: Data were prospectively collected in a multicenter ongoing registry. Only great saphenous vein above-knee treatments were included in this study. Eight hundred ninety patients (1,078 limbs) were treated prior to November 2003 at 32 centers. Clinical and duplex ultrasound follow-up was performed at 1 week, 6 months, and 1, 2, 3, and 4 years. RESULTS: Among 1,078 limbs treated, 858 were available for follow-up within 1 week, 446 at 6 months, 384 at 1 year, 210 at 2 years, 114 at 3 years, and 98 at 4 years. The vein occlusion rates were 91.0%, 88.8%, 86.2%, 84.2%, and 88.8%, respectively; the reflux-free rates were 91.0%, 89.3%, 86.2%, 86.0%, and 85.7%, respectively; and the varicose vein recurrence rates were 7.2%, 13.5%, 17.1%, 14.0%, and 21.4%, respectively, at each follow-up time point at 6 months, and 1, 2, 3, and 4 years. Patient symptom improvement persisted over 4 years. CONCLUSIONS: Endovascular temperature-controlled radiofrequency obliteration of saphenous vein reflux exhibits an enduring treatment efficacy clinically, anatomically, and hemodynamically up to 4 years following treatment. 相似文献
993.
994.
995.
Starling III John BA Patel Purvisha J. MD Rasberry Ron D. MD 《Dermatologic surgery》2005,31(4):484-485
BACKGROUND: Simple surgical excision is one of the most common treatment methods in the dermatologist's armamentarium. We describe a precise postsurgical dressing technique that can be used for wound care of those patients whose treatment involves removal of lesions via cutaneous surgery. OBJECTIVE: To devise a novel, precise, and effective dressing technique for postsurgical wound care. MATERIALS AND METHODS: We describe the technique using common in-office instruments. RESULTS AND CONCLUSION: Wound dressings for lesions located on curved areas such as the ears, nose, cheeks, and chin often exhibit less than adequate adherence and stability. The kerf-cut dressing technique optimizes pliability of dressing tape, and this maximizes efficient and stable application of postsurgical wound dressings to curved areas of the body. 相似文献
996.
997.
998.
U. Bolm-Audorff S. Brandenburg T. Brüning H. Dupuis R. Ellegast G. Elsner K. Franz H. Grasshoff V. Grosser L. Hanisch B. Hartmann E. Hartung† K. G. Hering G. Heuchert M. Jäger J. Krämer Dr. A. Kranig E. Ludolph A. Luttmann A. Nienhaus W. Pieper K. D. Pöhl T. Remé D. Riede G. Rompe K. Schäfer S. Schilling E. Schmitt F. Schröter A. Seidler M. Spallek M. Weber 《Trauma und Berufskrankheit》2005,7(4):320-332
The first part of this serial paper dealt with the medical criteria used in evaluation of the clinical picture caused by physical stress and the evaluation of other candidate causes and was published in issue no. 3/2005 (pp. 711–752) of Trauma and Berufskrankheit. This follow-up paper (II) presents criteria to be used in the evaluation of whether it is necessary to give up the occupations putting the spine at risk and in estimation of the degree of disability. 相似文献
999.
1000.
Zusammenfassung Frakturen des proximalen Humerus stellen beim älteren Patienten, bedingt durch Osteopenie und Verletzungsschwere, eine Herausforderung für die operative Versorgung dar. Seit wenigen Jahren stehen intramedulläre Implantate zur Verfügung, mit denen auch Mehrfragmentfrakturen mit hoher Primärstabilität versorgt werden können. Bei limitierten Weichteilschäden kann durch frühe Physiotherapie ein gutes funktionelles Ergebnis erreicht werden. Seit 2003 verwenden wir den T2-PHN (Fa. Stryker) und konnten bisher 15 Patienten nach 1-jähriger Beobachtung auswerten. Bei einem Durchschnittsalter von 64,6 Jahren lag der durchschnittliche Constant-Score nach 1 Jahr bei 68,3 (±17,3) auf der betroffenen Seite, seitenadaptiert wurden 79% erreicht. Der Anteil der 4-Segment-Frakturen lag bei 60%. Bei 4 Patienten beobachteten wir eine partielle Humeruskopfnekrose ohne Therapiekonsequenz. Implantatentfernungen waren in 5 Fällen wegen überstehender Schrauben oder vorstehendem proximalem Nagelende nötig. Mit den modernen Verriegelungsmarknägeln ist eine Gewebe schonende und sehr stabile Versorgung der proximalen Humerusfrakturen möglich. 相似文献