全文获取类型
收费全文 | 4849篇 |
免费 | 289篇 |
国内免费 | 11篇 |
专业分类
耳鼻咽喉 | 74篇 |
儿科学 | 179篇 |
妇产科学 | 98篇 |
基础医学 | 602篇 |
口腔科学 | 136篇 |
临床医学 | 440篇 |
内科学 | 915篇 |
皮肤病学 | 107篇 |
神经病学 | 308篇 |
特种医学 | 493篇 |
外科学 | 601篇 |
综合类 | 100篇 |
一般理论 | 2篇 |
预防医学 | 456篇 |
眼科学 | 71篇 |
药学 | 319篇 |
1篇 | |
中国医学 | 5篇 |
肿瘤学 | 242篇 |
出版年
2023年 | 24篇 |
2022年 | 40篇 |
2021年 | 87篇 |
2020年 | 56篇 |
2019年 | 71篇 |
2018年 | 75篇 |
2017年 | 61篇 |
2016年 | 65篇 |
2015年 | 89篇 |
2014年 | 111篇 |
2013年 | 153篇 |
2012年 | 230篇 |
2011年 | 229篇 |
2010年 | 179篇 |
2009年 | 153篇 |
2008年 | 188篇 |
2007年 | 214篇 |
2006年 | 181篇 |
2005年 | 163篇 |
2004年 | 152篇 |
2003年 | 144篇 |
2002年 | 132篇 |
2001年 | 116篇 |
2000年 | 111篇 |
1999年 | 101篇 |
1998年 | 117篇 |
1997年 | 103篇 |
1996年 | 105篇 |
1995年 | 90篇 |
1994年 | 60篇 |
1993年 | 84篇 |
1992年 | 74篇 |
1991年 | 74篇 |
1990年 | 77篇 |
1989年 | 111篇 |
1988年 | 94篇 |
1987年 | 104篇 |
1986年 | 107篇 |
1985年 | 118篇 |
1984年 | 71篇 |
1983年 | 65篇 |
1982年 | 46篇 |
1981年 | 51篇 |
1980年 | 53篇 |
1979年 | 30篇 |
1978年 | 36篇 |
1977年 | 41篇 |
1976年 | 40篇 |
1975年 | 40篇 |
1974年 | 22篇 |
排序方式: 共有5149条查询结果,搜索用时 15 毫秒
1.
Isolated patellofemoral arthritis is an increasingly recognized entity, and is usually associated with previous patellofemoral dysplasia or instability. Patellofemoral arthroplasty (PFA) has evolved significantly in recent years, both in terms of implant design and importantly in the understanding of appropriate patient selection. This review outlines the indications and investigations for PFA, provides a brief history of the development of contemporary implants, and presents the clinical outcomes for the prostheses most commonly used in the UK. In addition, it provides a detailed surgical technique for implantation of an onlay implant, with tips on how to optimize patellofemoral biomechanics and thus achieve a consistently good outcome. 相似文献
2.
Byrne Emma Abel Stephen Yu Alexander Shepard Matthew Karlovits Stephen M. Wegner Rodney E. 《Journal of neuro-oncology》2022,157(1):197-205
Journal of Neuro-Oncology - Adjuvant radiation is often used in patients with low grade gliomas with high-risk characteristics with a recommended dose of 45–54 Gy. We used the... 相似文献
3.
4.
M T Hegel G G Abel M Etscheidt S Cohen-Cole C I Wilmer 《Journal of behavior therapy and experimental psychiatry》1989,20(1):31-39
The hyperventilation syndrome is present in as many as 50% of patients with non-cardiac chest pain. This study evaluated a behavioral treatment of this disorder in three adult females. They had long histories of chest pain and were documented to be free of coronary artery disease. Each subject met the DSM-III-R diagnostic criteria for an anxiety disorder. Following treatment, all subjects showed a marked decrease in the frequency and intensity of chest pain episodes and in the frequency of shortness of breath episodes. Two subjects maintained their progress at one-year follow-up. The results lend support to the efficacy of controlled breathing and relaxation training for the treatment of hyperventilation-related chest pain and to the inclusion of a hyperventilation provocation test in the diagnosis of the syndrome as well as its role in changing cognitions regarding cardiac status. Also discussed is the rationale for treating hyperventilation related chest pain in a medical care setting. 相似文献
5.
6.
7.
RA O. Hempel 《Notfall & Rettungsmedizin》2007,10(5):367-371
Legal uncertainties for emergency vehicle drivers can be avoided when fundamental rules are established. In particular, differentiation of special rights and rights of way is essential. Inherent in both is the urgency necessary to save human lives. The right of way signaled by flashing blue lights and siren does not however justify traffic violations but signifies rather a request to other traffic participants. In contrast, special rights require no announcement and constitute a justifiable reason for traffic violations. Even so they do not allow that other traffic participants be endangered or harmed. Adherence to these basic principles can prevent legal misinterpretations as well as rigid adoption of inflexible standards of behavior. 相似文献
8.
RA Mag. Dr. C. Gepart 《Notfall & Rettungsmedizin》2007,10(4):289-292
Austria’s new Living Wills Act (Patientenverfügungsgesetz, or PatVG) that came into effect on 1st of June 2006, is the first law in Austria to regulate the controversial issue of living wills. The PatVG provides for a right to refuse future medical treatment by making an advance directive in the form of a living will that is either binding or “to be taken into consideration”. However, the establishment of a binding living will is governed by strict criteria as regards form and content, and both a medical doctor and a legal expert must be involved. Compliance with a living will is not allowed where there is a legal obligation to give medical treatment. There is also a legal obligation to give medical treatment in emergency situations where the time involved in looking for a living will could seriously endanger the health or the life of a patient. 相似文献
9.
Heidi Goerler Petra Oppelt Ulrich Abel Axel Haverich 《European journal of cardio-thoracic surgery》2007,32(4):560-566
OBJECTIVE: Fibrin sealant is widely used in almost all fields of surgery and has proved to be an effective therapeutic tool in cardiothoracic surgery. Nevertheless, there have been concerns about early bypass graft occlusion associated with the use of fibrin glue. This analysis has been performed to assess the risks and benefits of Tissucol Duo S in coronary artery bypass grafting (CABG) surgery. METHODS: Two thousand one hundred forty-nine patients were included in this retrospective study, 879 (40.9%) were intra-operatively treated with Tissucol Duo S fibrin glue, 1270 (59.1%) did not receive fibrin glue (control group). Patient characteristics were documented according to the EuroScore. Intra- and postoperative data were collected. Primary endpoint of this study was the 30-day all-cause mortality rate in the Tissucol Duo S treated group compared to the control group. RESULTS: Mean age was 66.6+/-9.4 years, 76.3% of the patients were male. There was an increased 30-day-mortality rate in the Tissucol Duo S group compared to the control group (8.5 vs 3.5%, p<0.001). In order to determine if and to what extent the apparent fibrin effect might be due to confounding effects from covariates, an adjustment for potential confounding was done. However, multivariable adjustment did not reduce the risk of fibrin glue below an odds ratio of 2.2. CONCLUSION: Although the apparent increase in mortality risk associated with the use of fibrin glue could not be eliminated statistically, we consider Tissucol Duo S fibrin glue a safe and effective therapeutic tool in CABG surgery when it is applied correctly. Due to the retrospective character of this study some detailed information about the indication for the use of fibrin glue and its application is missing which may be important cofactors for mortality. For further clarification a prospective randomized study may be useful. 相似文献
10.
Ohne Zusammenfassung 相似文献