全文获取类型
收费全文 | 9970篇 |
免费 | 180篇 |
国内免费 | 76篇 |
专业分类
耳鼻咽喉 | 265篇 |
儿科学 | 38篇 |
妇产科学 | 180篇 |
基础医学 | 1140篇 |
口腔科学 | 304篇 |
临床医学 | 1740篇 |
内科学 | 1107篇 |
皮肤病学 | 23篇 |
神经病学 | 195篇 |
特种医学 | 608篇 |
外科学 | 2123篇 |
综合类 | 273篇 |
预防医学 | 752篇 |
眼科学 | 176篇 |
药学 | 480篇 |
1篇 | |
中国医学 | 70篇 |
肿瘤学 | 751篇 |
出版年
2023年 | 12篇 |
2022年 | 34篇 |
2021年 | 31篇 |
2020年 | 29篇 |
2019年 | 40篇 |
2018年 | 64篇 |
2017年 | 47篇 |
2016年 | 41篇 |
2015年 | 52篇 |
2014年 | 57篇 |
2013年 | 71篇 |
2012年 | 406篇 |
2011年 | 745篇 |
2010年 | 365篇 |
2009年 | 59篇 |
2008年 | 524篇 |
2007年 | 752篇 |
2006年 | 758篇 |
2005年 | 745篇 |
2004年 | 887篇 |
2003年 | 942篇 |
2002年 | 959篇 |
2001年 | 631篇 |
2000年 | 785篇 |
1999年 | 403篇 |
1998年 | 141篇 |
1997年 | 37篇 |
1996年 | 35篇 |
1995年 | 34篇 |
1994年 | 37篇 |
1993年 | 66篇 |
1992年 | 15篇 |
1991年 | 24篇 |
1990年 | 21篇 |
1989年 | 25篇 |
1988年 | 28篇 |
1987年 | 48篇 |
1986年 | 34篇 |
1985年 | 28篇 |
1984年 | 14篇 |
1983年 | 17篇 |
1981年 | 16篇 |
1980年 | 13篇 |
1978年 | 12篇 |
1975年 | 14篇 |
1972年 | 13篇 |
1971年 | 12篇 |
1970年 | 10篇 |
1967年 | 12篇 |
1966年 | 9篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
61.
Blinov NN Kozlovskiĭ EB Luzin SI Pervov AIu Sonin AF Plutov IG Rodin VI 《Meditsinskaia tekhnika》1999,(5):24-26
The paper deals with the specific features of X-ray diagnostic units that have no screen-filming device for film X-ray study, with the requirements for hardware and software of these units. It gives data on specific systems for digital X-ray study. 相似文献
62.
The prospects for developing a new noninvasive medical diagnostic technique, such as optical (laser) tomography of biological tissues largely depend on the feasibility of designing an adequate mathematical model for the reconstruction of images of the spatial structure of objects that are in the highly scattering medium (HSM). The basic difficulty is that it is necessary to effectively describe the physical properties and the propagation pattern of photons of different types in such a medium. This review considers methods for describing the distribution of laser ultrashort pulses in HSM with particular emphasis on a new nonstationary two-flux model of radiation transfer. 相似文献
63.
64.
65.
Gerasimov VN Lushchikov SB Babich IV Gaevskaia GB Kruglov AN Baĭdus' ON Stepanov AV 《Vestnik Rossi?sko? akademii meditsinskikh nauk / Rossi?skaia akademiia meditsinskikh nauk》1999,(12):35-41
The paper presents the results of the physicochemical properties and corrosive activity of the new chlorine-containing compositions Ciaref and DP-1. Various microbiological, biochemical, and biophysical studies were conducted to examine different aspects of the mechanism of action of Ciaref and DP-1 on vegetative (Francisella tularensis) and sporal (Bacillus turingiensis) microorganisms. Suspension, test-surface irrigation, and aerosol techniques were employed under close industrial conditions to study the disinfecting properties of the agents in bacterial and sporal contamination. 相似文献
66.
Sudzilovskiĭ FV 《Morfologii?a (Saint Petersburg, Russia)》1999,116(6):7-8
67.
68.
Clinical course of acute nonspecific lymphadenitis of the face and neck is studied in 241 patients aged 1-14 years in order to improve the diagnosis and therapy of this condition. General clinical examinations were supplemented by laser biophotometry and assessment of the activities of some local defense factors (lysozyme, beta-lysine, secretory and serum IgA). Multiple-modality treatment for the first time included magnetic laser therapy (MLT), and its efficacy is assessed. Results of biophotometry helped define objective criteria for the diagnosis and evaluation of treatment efficacy in children with acute lymphadenitis of the face and neck. MLT proved to be a highly effective treatment modality, decreasing the inflammation and correcting local (oral) defense factors. Use of MLT accelerated all phases of the inflammatory process, promoted its regression at the serous stage, and decreased the incidence of suppurative forms of acute lymphadenitis by 40%. 相似文献
69.
In the experiment with guinea pigs at contact sialoadenitis reproduction (karragenine inflammation of soft tissues of the oral cavity) it was established that in DNA of salivary glands cells and the neighbouring tissues the content of 5-methylcytosine was decreased, it being normalized at "Triovit" antioxidant complex together with cvercitynum correction. The content of DNA 8-hydroxyguanine is characterized by a wide range of data and in absolute values increases in inflammation, but decreases after antioxidant correction. The role of the changes discovered is discussed. 相似文献
70.