全文获取类型
收费全文 | 1941篇 |
免费 | 296篇 |
国内免费 | 41篇 |
专业分类
耳鼻咽喉 | 13篇 |
儿科学 | 111篇 |
妇产科学 | 25篇 |
基础医学 | 117篇 |
口腔科学 | 28篇 |
临床医学 | 302篇 |
内科学 | 622篇 |
皮肤病学 | 67篇 |
神经病学 | 197篇 |
特种医学 | 292篇 |
外科学 | 227篇 |
综合类 | 34篇 |
预防医学 | 77篇 |
眼科学 | 19篇 |
药学 | 78篇 |
中国医学 | 1篇 |
肿瘤学 | 68篇 |
出版年
2023年 | 53篇 |
2022年 | 15篇 |
2021年 | 29篇 |
2020年 | 91篇 |
2019年 | 13篇 |
2018年 | 91篇 |
2017年 | 73篇 |
2016年 | 69篇 |
2015年 | 64篇 |
2014年 | 97篇 |
2013年 | 112篇 |
2012年 | 48篇 |
2011年 | 43篇 |
2010年 | 80篇 |
2009年 | 112篇 |
2008年 | 46篇 |
2007年 | 49篇 |
2006年 | 49篇 |
2005年 | 40篇 |
2004年 | 17篇 |
2003年 | 21篇 |
2002年 | 24篇 |
2001年 | 42篇 |
2000年 | 22篇 |
1999年 | 28篇 |
1998年 | 81篇 |
1997年 | 97篇 |
1996年 | 78篇 |
1995年 | 69篇 |
1994年 | 50篇 |
1993年 | 53篇 |
1992年 | 27篇 |
1991年 | 21篇 |
1990年 | 34篇 |
1989年 | 57篇 |
1988年 | 52篇 |
1987年 | 30篇 |
1986年 | 24篇 |
1985年 | 25篇 |
1984年 | 21篇 |
1983年 | 10篇 |
1982年 | 17篇 |
1981年 | 17篇 |
1980年 | 15篇 |
1979年 | 12篇 |
1978年 | 12篇 |
1977年 | 10篇 |
1976年 | 13篇 |
1973年 | 12篇 |
1971年 | 13篇 |
排序方式: 共有2278条查询结果,搜索用时 9 毫秒
1.
2.
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(3):211-252
Occupational diseases Nos. 2108 and 2110 correspond to intervertebral disc-related diseases of the lumbar spine from many years of carrying or lifting heavy loads, occupations in extreme postures of full flexion or oscillation of the whole body when seated, and which compel the cessation of all activities which are or could be the cause for the origin, exacerbation or recurrence of the disease. These occupational diseases came into force at the start of 1993, but there have been considerable problems in their implementation. The present Part I of the contribution is the result of the work of an interdisciplinary study group and contains medical criteria for the assessment of possibly strain-related clinical characteristics and the evaluation of other possible causes. Part II is to be published in Volume 4/2005 and will deal with questions related to forced cessation and to the assessment of the loss of earning ability. Agreement was reached in many areas related to the assessment of occupational claims. This should allow for evidence-based decision making in the future for the occupational diseases Nos. 2108 and 2110. 相似文献
3.
4.
5.
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
6.
7.
8.
9.
Ralls PW; Johnson MB; Kanel G; Dobalian DM; Colletti PM; Boswell WD Jr; Radin DR; Halls JM 《Radiology》1986,161(2):451-454
FM sonography - a signal-processing technique that uses frequency and phase information as well as amplitude data - shows promise in evaluation of patients with diffuse liver disease. In a prospective blinded review of 37 patients with biopsy-proved liver disease and 42 healthy volunteers, FM sonography was clearly superior to traditional amplitude-based (AM) sonography in distinguishing healthy from diseased subjects. Statistically significant differences were seen in accuracy (FM, 98.7%; AM, 84.8%), sensitivity (FM, 97.3%; AM, 70.3%), and negative predictive value (FM, 97.7%; AM, 78.8%). Our data also suggest that current FM sonographic techniques cannot differentiate among histologic findings associated with different hepatic parenchymal abnormalities. It is unclear, therefore, whether FM imaging can reduce the numbers of patients who require biopsy for diagnosis or the frequency of biopsy procedures in patients with known disease. 相似文献
10.