全文获取类型
| 收费全文 | 1471100篇 |
| 免费 | 104443篇 |
| 国内免费 | 1952篇 |
专业分类
| 耳鼻咽喉 | 19050篇 |
| 儿科学 | 47224篇 |
| 妇产科学 | 39256篇 |
| 基础医学 | 219056篇 |
| 口腔科学 | 39659篇 |
| 临床医学 | 134573篇 |
| 内科学 | 293042篇 |
| 皮肤病学 | 32455篇 |
| 神经病学 | 120612篇 |
| 特种医学 | 53014篇 |
| 外国民族医学 | 363篇 |
| 外科学 | 204175篇 |
| 综合类 | 26588篇 |
| 现状与发展 | 3篇 |
| 一般理论 | 628篇 |
| 预防医学 | 123679篇 |
| 眼科学 | 32071篇 |
| 药学 | 107180篇 |
| 7篇 | |
| 中国医学 | 2658篇 |
| 肿瘤学 | 82202篇 |
出版年
| 2021年 | 12583篇 |
| 2019年 | 13557篇 |
| 2018年 | 20217篇 |
| 2017年 | 14817篇 |
| 2016年 | 15726篇 |
| 2015年 | 18018篇 |
| 2014年 | 23147篇 |
| 2013年 | 35694篇 |
| 2012年 | 52147篇 |
| 2011年 | 54648篇 |
| 2010年 | 30226篇 |
| 2009年 | 27630篇 |
| 2008年 | 50306篇 |
| 2007年 | 53844篇 |
| 2006年 | 52311篇 |
| 2005年 | 51242篇 |
| 2004年 | 48968篇 |
| 2003年 | 46376篇 |
| 2002年 | 44657篇 |
| 2001年 | 60605篇 |
| 2000年 | 61757篇 |
| 1999年 | 52296篇 |
| 1998年 | 14142篇 |
| 1997年 | 12849篇 |
| 1996年 | 13227篇 |
| 1995年 | 12458篇 |
| 1994年 | 11581篇 |
| 1992年 | 40704篇 |
| 1991年 | 39959篇 |
| 1990年 | 38649篇 |
| 1989年 | 37276篇 |
| 1988年 | 34624篇 |
| 1987年 | 33832篇 |
| 1986年 | 32241篇 |
| 1985年 | 30328篇 |
| 1984年 | 23124篇 |
| 1983年 | 20165篇 |
| 1982年 | 11943篇 |
| 1979年 | 21966篇 |
| 1978年 | 16112篇 |
| 1977年 | 13492篇 |
| 1976年 | 12410篇 |
| 1975年 | 13490篇 |
| 1974年 | 16419篇 |
| 1973年 | 16226篇 |
| 1972年 | 15319篇 |
| 1971年 | 14351篇 |
| 1970年 | 13520篇 |
| 1969年 | 12837篇 |
| 1968年 | 11911篇 |
排序方式： 共有10000条查询结果，搜索用时 15 毫秒
1.
2.
3.
4.
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5.
6.
7.
8.
9.
Emma J. Walker Noni E. MacDonald Nehal Islam Nicole Le Saux Karina A. Top Deshayne B. Fell 《Vaccine》2019,37(13):1725-1735
Objective
To systematically review literature on uptake and timeliness of diphtheria-tetanus-pertussis, measles-mumps-rubella, and/or polio-containing vaccines in infants who were born preterm, with a low birth weight, and/or with chronic health conditions that were diagnosed within the first 6?months of life.Methods
Using a standardized search strategy developed by a medical librarian, records were extracted from MEDLINE, Embase, Database of Abstracts of Reviews of Effects, and CINAHL up to May 8, 2018.Results
Out of the 1997 records that were screened, we identified 21 studies that met inclusion criteria. Eleven studies assessed vaccine coverage and/or timeliness in preterm infants, 6 in low birth weight infants, and 7 in children with chronic health conditions. Estimates of coverage in these populations were highly variable, ranging from 40% to 100% across the vaccines and population groups.Conclusions
There is a lack of studies reporting coverage and timeliness of routine immunizations in special populations of children.Policy implications
Our review suggests a need for improved surveillance of immunization status in special populations of infants, as well as a need for standardization of reporting practices. 相似文献10.
Conall T. Morgan Brigitte Mueller Varsha Thakur Vitor Guerra Callaghan Jull Luc Mertens Mark Friedberg Fraser Golding Mike Seed Steven E.S. Miner Edgar T. Jaeggi Cedric Manlhiot Lynne E. Nield 《The Canadian journal of cardiology》2019,35(4):453-461