全文获取类型
收费全文 | 1646篇 |
免费 | 90篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 5篇 |
儿科学 | 28篇 |
妇产科学 | 2篇 |
基础医学 | 231篇 |
口腔科学 | 34篇 |
临床医学 | 136篇 |
内科学 | 448篇 |
皮肤病学 | 9篇 |
神经病学 | 129篇 |
特种医学 | 76篇 |
外科学 | 379篇 |
综合类 | 1篇 |
预防医学 | 86篇 |
眼科学 | 8篇 |
药学 | 67篇 |
肿瘤学 | 99篇 |
出版年
2023年 | 7篇 |
2022年 | 27篇 |
2021年 | 34篇 |
2020年 | 23篇 |
2019年 | 42篇 |
2018年 | 59篇 |
2017年 | 40篇 |
2016年 | 37篇 |
2015年 | 36篇 |
2014年 | 61篇 |
2013年 | 65篇 |
2012年 | 108篇 |
2011年 | 123篇 |
2010年 | 84篇 |
2009年 | 77篇 |
2008年 | 114篇 |
2007年 | 117篇 |
2006年 | 88篇 |
2005年 | 113篇 |
2004年 | 101篇 |
2003年 | 92篇 |
2002年 | 85篇 |
2001年 | 19篇 |
2000年 | 17篇 |
1999年 | 17篇 |
1998年 | 25篇 |
1997年 | 18篇 |
1996年 | 12篇 |
1995年 | 13篇 |
1994年 | 13篇 |
1993年 | 10篇 |
1992年 | 11篇 |
1991年 | 3篇 |
1989年 | 3篇 |
1988年 | 4篇 |
1987年 | 5篇 |
1986年 | 4篇 |
1985年 | 3篇 |
1984年 | 4篇 |
1983年 | 1篇 |
1982年 | 4篇 |
1981年 | 6篇 |
1978年 | 1篇 |
1975年 | 1篇 |
1974年 | 2篇 |
1972年 | 1篇 |
1970年 | 2篇 |
1969年 | 1篇 |
1935年 | 1篇 |
1929年 | 2篇 |
排序方式: 共有1738条查询结果,搜索用时 0 毫秒
31.
Treatment of pleural malignancies by photo‐induction combined to systemic chemotherapy: Proof of concept on rodent lung tumors and feasibility study on porcine chest cavities 下载免费PDF全文
32.
33.
Impact of recipient ABH secretor status on outcome in minor ABO‐incompatible hematopoietic stem cell transplantation 下载免费PDF全文
34.
35.
36.
37.
38.
Endolumenal colon occlusion device for transanal and transrectal surgery—a porcine feasibility study
Georg R. Linke Benedict Carstensen Georg Kähler Andreas Zerz Maxym Shevchenko Rene Warschkow Felix Lasitschka Hannes G. Kenngott Jonas Senft Beat P. Müller-Stich 《Langenbeck's archives of surgery / Deutsche Gesellschaft fur Chirurgie》2013,398(4):595-601
Purpose
Although several studies have demonstrated the feasibility of transrectal natural orifice translumenal endoscopic surgery (NOTES), its clinical application has been hindered by concerns regarding potential infectious complications. The aim of this study was to evaluate the feasibility of a newly developed device for endolumenal colon occlusion (ColoShield) in an acute porcine model.Methods
The principle of the ColoShield device is based on two balloons, with negative pressure in between. The ColoShield device and a gauze tamponade as a control group were evaluated in a non-survival study on 16 pigs. The efficacy of the occlusion system in establishing a leak-proof pneumorectum and in sealing the colon from proximal (watertight sealing) was tested by a standardized study course. Finally, the colon/rectum was explanted for macroscopic and microscopic examination.Results
A 20-mmHg leak-proof pneumorectum over a period of 10 min could be achieved in seven of eight (87 %) animals with the ColoShield device and in none of eight (0 %) animals with gauze tamponade (p?<?0.001). In the watertight sealing test, mean intracolonic pressures of 23.5?±?18.1 (0–53) mmHg using the ColoShield device and 0?±?1.1 (0–3) mmHg using gauze tamponade (p?=?0.003) were documented proximal to the occlusion system before a leakage occurred. Macroscopic and histopathological examinations revealed no significant impairment of the colon specimen in either group.Conclusions
ColoShield proved to be a safe and effective device for a reversible endolumenal colon occlusion. Further studies should evaluate its impact on procedural sterility during transrectal NOTES. 相似文献39.
Tobias Gehrig A. Mehrabi L. Fischer H. Kenngott U. Hinz C. N. Gutt Beat P. Müller-Stich 《Langenbeck's archives of surgery / Deutsche Gesellschaft fur Chirurgie》2013,398(5):691-696
Aims
The da Vinci® telemanipulation system offers a wide range of precise movements and 3D visualization with depth perception and magnification effect. Such a system could be useful for improving minimally invasive procedures—as in the case of large hiatal hernia with paraesophageal involvement (PEH) repair. Studies reporting on the robotic-assisted PEH repair are scarce, and a comparison to the standard operation techniques is lacking. Therefore, we decided to investigate the feasibility and safety of robotic-assisted surgery (RAS) compared to conventional laparoscopic (CLS) and open surgery (OS) for the first time.Methods
We investigated 42 patients for the perioperative outcome after PEH repair. Twelve patients were operated on with RAS, 17 with CLS, and 13 with OS. Operating time, intraoperative blood loss, intra- and postoperative complications, mortality, and duration of hospital stay were analyzed in each method.Results
On average, operating time in the RAS group was 38 min longer, and the intraoperative blood was loss 217 ml lower compared to OS. Both results were similar to the CLS group. The intraoperative complication rate was similar in all groups. The postoperative complication rate in the RAS group was significantly lower than the OS group, though again similar to the CLS group. The hospital stay was 5 days shorter in the RAS group than the OS group and once again similar to the CLS group.Conclusion
The results show that RAS is feasible and safe. It appears to be an alternative to OS due to lower intraoperative blood loss and potentially fewer postoperative complications, as well as shorter hospital stay. Though, RAS is not superior to CLS. 相似文献40.