全文获取类型
收费全文 | 730篇 |
免费 | 61篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 15篇 |
儿科学 | 23篇 |
妇产科学 | 30篇 |
基础医学 | 57篇 |
口腔科学 | 93篇 |
临床医学 | 59篇 |
内科学 | 190篇 |
皮肤病学 | 14篇 |
神经病学 | 21篇 |
特种医学 | 14篇 |
外科学 | 120篇 |
综合类 | 5篇 |
预防医学 | 56篇 |
眼科学 | 22篇 |
药学 | 28篇 |
中国医学 | 2篇 |
肿瘤学 | 44篇 |
出版年
2024年 | 2篇 |
2023年 | 6篇 |
2022年 | 23篇 |
2021年 | 28篇 |
2020年 | 26篇 |
2019年 | 34篇 |
2018年 | 56篇 |
2017年 | 14篇 |
2016年 | 20篇 |
2015年 | 38篇 |
2014年 | 48篇 |
2013年 | 39篇 |
2012年 | 69篇 |
2011年 | 73篇 |
2010年 | 52篇 |
2009年 | 40篇 |
2008年 | 38篇 |
2007年 | 40篇 |
2006年 | 27篇 |
2005年 | 32篇 |
2004年 | 15篇 |
2003年 | 15篇 |
2002年 | 14篇 |
2001年 | 1篇 |
2000年 | 6篇 |
1999年 | 6篇 |
1998年 | 4篇 |
1997年 | 3篇 |
1996年 | 3篇 |
1995年 | 4篇 |
1994年 | 1篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1988年 | 3篇 |
1986年 | 2篇 |
1985年 | 1篇 |
1984年 | 2篇 |
1979年 | 1篇 |
1971年 | 1篇 |
1968年 | 1篇 |
1967年 | 1篇 |
1966年 | 2篇 |
排序方式: 共有793条查询结果,搜索用时 93 毫秒
31.
Pulsed versus continuous wave CO2 laser excisions of 100 oral fibrous hyperplasias: A randomized controlled clinical and histopathological study
下载免费PDF全文
![点击此处可从《Lasers in surgery and medicine》网站下载免费的PDF全文](/ch/ext_images/free.gif)
32.
Abdol-Mohammad Kajbafzadeh Shabnam Sabetkish Ali Tourchi Naser Amirizadeh Kourosh Afshar Hassan Abolghasemi Azadeh Elmi Saman Shafaat Talab Peyman Eshghi Mohammad Javad Mohseni 《International urology and nephrology》2014,46(8):1573-1580
Background
To introduce the role of fibrin sealant and preputial acellular matrix (PAM) as a new source of inert collagen matrix for urethral reconstruction.Methods
A ventral urethral segmental defect was created in 24 male rabbits divided into four groups. In group 1 (G1), urethrotomy was closed in layers. In group 2 (G2), closure was followed by applying fibrin sealant. In groups 3 (G3) and 4 (G4), urethroplasty was performed with a patch graft of PAM, and in G4, fibrin sealant was also applied. Serial urethrography was performed before and after the operation. Then, the animals were euthanized, and their urethra was excised 1, 3, and 9 months postoperatively for further electron microscopic examination, terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) technique, and immunohistochemical (IHC) staining with CD34, CD31, desmin, SMA, and α-actin.Results
In G1 and G2, the fistula repair failed in all the time points. In G3 and G4, serial urethrography confirmed the maintenance of a wide urethral caliber without signs of strictures or extravasations. Satisfactory vascularity was observed in G3 and G4 during the whole study, which was more significant in G4 after 9 months of follow-up. The presence of a complete transitional cell layer was confirmed over the graft in G3 and G4 in all time points. IHC staining confirmed the effectiveness of fistula repair in G3 and G4, 3 months postoperatively.Conclusion
This rabbit model showed that PAM combined with fibrin sealant may herald a reliable option for repairing segmental urethral defects. 相似文献33.
34.
35.
36.
Saman K. Hashmi Shoba A. Navai Tiffany M. Chambers Michael E. Scheurer M. John Hicks Rachel E. Rau Maria M. Gramatges 《Pediatric blood & cancer》2020,67(2)
Conjugated hyperbilirubinemia (CHB) and liver transaminase elevation are known complications of acute lymphoblastic leukemia (ALL) therapy, but host risk factors are poorly understood. Among 373 children diagnosed with ALL between 2011 and 2016, clinically significant CHB and transaminase elevation were observed in 15 (4.0%) and 12 (3.2%) children, respectively, during induction and consolidation. Body mass index ≥95th percentile (odds ratio 9.20, 95% confidence interval 2.56–32.96) was the only host factor independently associated with CHB, and no host factors were associated with transaminase elevation. Obese patients warrant closer monitoring of hepatic function to facilitate early intervention prior to the development of severe, adverse hepatic events. 相似文献
37.
38.
Shuanglun Xie Maciej Kubala Jackson J. Liang Jiandu Yang Benoit Desjardins Pasquale Santangeli Rob J. van der Geest Robert Schaller Michael Riley Gregory Supple David S. Frankel David Callans Erica Zado PAC Francis Marchlinski Saman Nazarian 《Journal of cardiovascular electrophysiology》2019,30(3):366-373
39.
Controversy exists about the role of an increased level of tissue cyclic adenosine 3'-5' monophosphate (cAMP) in the genesis of early ischemic ventricular arrhythmias. Evidence for an arrhythmogenic role for cAMP was proposed by Podzuweit et al. (1978) and Opie et al. (1979) who argued that ischemic ventricular fibrillation was associated with increased levels of tissue cAMP in the ischemic zone. Lubbe et al. (1978) found that infusion of dibutyryl (dBcAMP), or the beta-adrenergic stimulant epinephrine, or the phosphodiesterase inhibitor theophylline, all produced a marked fall in the ventricular fibrillation threshold and an increase in the duration of the vulnerable period of the isolated perfused rat heart. In contrast, Muller et al. (1986) recently showed that prevention of ventricular fibrillation by beta-adrenergic blockade is not directly associated with decreased levels of cAMP, while Manning et al. (1985) used forskolin to stimulate adenylate cyclase and found that the markedly elevated tissue cAMP levels in the rat heart did not promote ischemic or reperfusion arrhythmias. Some of these contradictions could be resolved if the electrophysiological mechanisms by which increased levels of cAMP might predispose to arrhythmias were better understood. It is known that intracellular injection of cAMP into cardiac myocytes can enhance delayed afterdepolarizations (DADs; Matsuda et al. 1982) and that DADs may explain certain arrhythmias such as those evoked by digitalis toxicity (Ferrier, 1977) or reperfusion (Ferrier et al. 1985).(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
40.