全文获取类型
| 收费全文 | 1505745篇 |
| 免费 | 105676篇 |
| 国内免费 | 2519篇 |
专业分类
| 耳鼻咽喉 | 21212篇 |
| 儿科学 | 49256篇 |
| 妇产科学 | 42800篇 |
| 基础医学 | 219891篇 |
| 口腔科学 | 41309篇 |
| 临床医学 | 126582篇 |
| 内科学 | 301978篇 |
| 皮肤病学 | 32570篇 |
| 神经病学 | 120402篇 |
| 特种医学 | 57272篇 |
| 外国民族医学 | 460篇 |
| 外科学 | 225990篇 |
| 综合类 | 27576篇 |
| 现状与发展 | 1篇 |
| 一般理论 | 368篇 |
| 预防医学 | 113868篇 |
| 眼科学 | 33582篇 |
| 药学 | 113832篇 |
| 1篇 | |
| 中国医学 | 3194篇 |
| 肿瘤学 | 81796篇 |
出版年
| 2021年 | 11750篇 |
| 2019年 | 12409篇 |
| 2018年 | 20494篇 |
| 2017年 | 14555篇 |
| 2016年 | 15175篇 |
| 2015年 | 17223篇 |
| 2014年 | 22335篇 |
| 2013年 | 34142篇 |
| 2012年 | 49664篇 |
| 2011年 | 52054篇 |
| 2010年 | 29575篇 |
| 2009年 | 26583篇 |
| 2008年 | 48725篇 |
| 2007年 | 52466篇 |
| 2006年 | 51898篇 |
| 2005年 | 50994篇 |
| 2004年 | 48654篇 |
| 2003年 | 46675篇 |
| 2002年 | 45551篇 |
| 2001年 | 63271篇 |
| 2000年 | 64889篇 |
| 1999年 | 55310篇 |
| 1998年 | 15342篇 |
| 1997年 | 13700篇 |
| 1996年 | 13856篇 |
| 1995年 | 13079篇 |
| 1994年 | 12386篇 |
| 1992年 | 43632篇 |
| 1991年 | 42710篇 |
| 1990年 | 42146篇 |
| 1989年 | 40752篇 |
| 1988年 | 37993篇 |
| 1987年 | 37101篇 |
| 1986年 | 35349篇 |
| 1985年 | 33644篇 |
| 1984年 | 25047篇 |
| 1983年 | 21782篇 |
| 1982年 | 12998篇 |
| 1979年 | 23642篇 |
| 1978年 | 16584篇 |
| 1977年 | 14385篇 |
| 1976年 | 13537篇 |
| 1975年 | 14894篇 |
| 1974年 | 17499篇 |
| 1973年 | 16934篇 |
| 1972年 | 16089篇 |
| 1971年 | 15003篇 |
| 1970年 | 13942篇 |
| 1969年 | 13477篇 |
| 1968年 | 12636篇 |
排序方式： 共有10000条查询结果，搜索用时 93 毫秒
81.
82.
83.
84.
E. Likotrafiti K. M. Tuohy G. R. Gibson R. A. Rastall 《International journal of food sciences and nutrition》2016,67(2):83-91
The aim of the present study was to evaluate the antimicrobial activity of two synbiotic combinations, Lactobacillus fermentum with short-chain fructooligosaccharides (FOS-LF) and Bifidobacterium longum with isomaltooligosaccharides (IMO-BL), against enterohaemorrhagic Escherichia coli O157:H7 and enteropathogenic E. coli O86. Antimicrobial activity was determined (1) by co-culturing the synbiotics and pathogens in batch cultures, and (2) with the three-stage continuous culture system (gut model), inoculated with faecal slurry from an elderly donor. In the co-culture experiments, IMO-BL was significantly inhibitory to both E. coli strains, while FOS-LF was slightly inhibitory or not inhibitory. Factors other than acid production appeared to play a role in the inhibition. In the gut models, both synbiotics effectively inhibited E. coli O157 in the first vessel, but not in vessels 2 and 3. E. coli O86 was not significantly inhibited. 相似文献
85.
86.
Stelter K. Theodoraki M. N. Becker S. Tsekmistrenko V. Olzowy B. Ledderose G. 《European archives of oto-rhino-laryngology》2015,272(3):639-639
European Archives of Oto-Rhino-Laryngology - 相似文献
87.
88.
F. Giovanardi F. Nudo Q. Lai M. Garofalo A. Consolo E. Choppin De Janvry G.A. Arroyo Murillo P. Ursi D. Stabile F. Melandro P.B. Berloco R. Pretagostini L. Poli 《Transplantation proceedings》2019,51(1):128-131
Background
Arterial vascular anomalies in patients undergoing kidney transplantation (KT) are correlated with a higher incidence of early surgical complications, potentially causing graft loss. Arterial reconstruction allows patients to overcome these surgical challenges, thus minimizing the risk of poor outcomes. The aim of the present study is to retrospectively investigate the safety and effectiveness of the multiple arterial reconstruction technique with a Teflon patch in case of an unavailable aortic patch: to do so, surgical complications, graft function, and patient survival were evaluated.Methods
During the period January 2009 to August 2016, 202 adult deceased-donor KTs were performed at our center. Group A (n = 27; reconstruction of multiple arteries) and Group B (n = 175; control group) were compared.Results
No differences were observed between the 2 groups in terms of early postoperative course, with no vascular complication observed in Group A. No vascular patch infections were reported, nor longer cold ischemia time rates. Similarly, long-term survival rates were similar between the 2 groups.Conclusions
The Teflon-patch arterial reconstruction technique appears to be safe and effective, with an acceptable balance of benefits and potential risks of using a prosthetic material. Studies based on larger series are needed to further validate this approach. 相似文献89.
Rosario Gulias-Cañizo Anell Lagunes-Guillén Arturo González-Robles Erika Sánchez-Guzmán Federico Castro-Muñozledo 《Burns : journal of the International Society for Burn Injuries》2019,45(2):398-412
Background
Since recent reports have shown that (-)-Epigallocatechin-3-gallate (EGCG) could be used for treating proliferative and inflammatory disorders, we explored its use for the management of corneal chemical burns.Materials and methods
Initially, EGCG was assayed on the rabbit corneal epithelial cell line RCE1(5T5) to establish the best testing conditions, and to avoid unwanted outcomes in the experimental animals. Then, we studied its effects on cell proliferation, cell cycle progression and cell differentiation. Afterwards, we instilled EGCG in experimental grade II corneal alkali burns in mice, three times a day up to 21 days, and evaluated by slit lamp examination and histological sections of corneal epithelial, corneal endothelial and stromal edema, as well as the presence of inflammatory cells and neovascularization.Results
EGCG reduced cell growth and led to a decline in the proportion of proliferative cells in a concentration dependent manner. At 10 μM, EGCG promoted cell differentiation, an effect not related with apoptosis or cytotoxicity. When 10 μM EGCG was instilled in corneal alkali burns in mice three times a day up to 21 days, EGCG significantly reduced corneal opacity and neovascularization. The improved clinical appearance of the cornea was associated to a controlled epithelial growth; epithelial morphology was similar to that observed in normal epithelium and contrasted with the hyperproliferative, desquamating epithelium observed in control burn wounds. EGCG reduced corneal, stromal and endothelial edema, and wound inflammation.Conclusion
This work constitutes the first evidence for the use of EGCG in the acute phase of a corneal alkali burn, representing a possible novel alternative to improve patient outcomes as an add-on therapy. 相似文献90.