全文获取类型
收费全文 | 6033篇 |
免费 | 385篇 |
国内免费 | 41篇 |
专业分类
耳鼻咽喉 | 84篇 |
儿科学 | 135篇 |
妇产科学 | 82篇 |
基础医学 | 671篇 |
口腔科学 | 138篇 |
临床医学 | 450篇 |
内科学 | 1717篇 |
皮肤病学 | 38篇 |
神经病学 | 386篇 |
特种医学 | 325篇 |
外科学 | 1067篇 |
综合类 | 32篇 |
一般理论 | 1篇 |
预防医学 | 140篇 |
眼科学 | 160篇 |
药学 | 288篇 |
中国医学 | 4篇 |
肿瘤学 | 741篇 |
出版年
2023年 | 110篇 |
2022年 | 189篇 |
2021年 | 336篇 |
2020年 | 162篇 |
2019年 | 179篇 |
2018年 | 211篇 |
2017年 | 165篇 |
2016年 | 195篇 |
2015年 | 179篇 |
2014年 | 218篇 |
2013年 | 277篇 |
2012年 | 443篇 |
2011年 | 479篇 |
2010年 | 234篇 |
2009年 | 171篇 |
2008年 | 280篇 |
2007年 | 287篇 |
2006年 | 256篇 |
2005年 | 261篇 |
2004年 | 226篇 |
2003年 | 202篇 |
2002年 | 193篇 |
2001年 | 73篇 |
2000年 | 77篇 |
1999年 | 94篇 |
1998年 | 51篇 |
1997年 | 47篇 |
1996年 | 43篇 |
1995年 | 41篇 |
1994年 | 37篇 |
1993年 | 32篇 |
1992年 | 89篇 |
1991年 | 63篇 |
1990年 | 66篇 |
1989年 | 60篇 |
1988年 | 49篇 |
1987年 | 45篇 |
1986年 | 44篇 |
1985年 | 34篇 |
1984年 | 23篇 |
1983年 | 31篇 |
1982年 | 16篇 |
1981年 | 18篇 |
1980年 | 12篇 |
1979年 | 12篇 |
1977年 | 13篇 |
1976年 | 17篇 |
1975年 | 14篇 |
1974年 | 24篇 |
1973年 | 12篇 |
排序方式: 共有6459条查询结果,搜索用时 31 毫秒
91.
92.
93.
Ultrasonic measurement of the effects of light irradiation and presence of water on the polymerization of self‐adhesive resin cement
下载免费PDF全文
![点击此处可从《European journal of oral sciences》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Hirotaka Takenaka Hajime Ouchi Keiichi Sai Ryo Kawamoto Ryosuke Murayama Hiroyasu Kurokawa Masashi Miyazaki 《European journal of oral sciences》2015,123(5):369-374
Self‐adhesive resin cements are useful in restorations because they reduce the number of clinical steps involved in the restoration process. This study evaluated, using ultrasonic measurements, the influence of light irradiation and the presence of water on the polymerization behavior and elastic modulus of a self‐adhesive resin cement. A self‐adhesive resin cement (RelyX Unicem 2 Automix) or a resin cement (RelyX ARC) was inserted into a transparent mold on a sample stage, and the presence of water and effect of light‐irradiation were evaluated. The transit time of a sonic wave through the cement disk was divided by the specimen thickness to obtain the sonic velocity, and longitudinal and shear waves were used to determine the elastic modulus. When the resin cements were light‐irradiated, the sonic velocity rapidly increased and plateaued at 2,500–2,700 m s?1. When the cements were not irradiated, the rates of increase in the sonic velocity were reduced. When water was applied to the sample stage, the sonic velocity was reduced. The elastic modulus values of the specimens ranged from 9.9 to 15.9 GPa after 24 h. The polymerization behavior of self‐adhesive resin cements is affected by the polymerization mode and the presence of water. 相似文献
94.
Ryo Ishino Yumi Kawase Toshio Kitawaki Naoshi Sugimoto Maki Oku Shumpei Uchida Osamu Imataki Akihito Matsuoka Teruhisa Taoka Kimihiro Kawakami Toin H. van Kuppevelt Tomoki Todo Akifumi Takaori-Kondo Norimitsu Kadowaki 《Molecular therapy》2021,29(2):762-774
- Download : Download high-res image (99KB)
- Download : Download full-size image
95.
Shinichiro Muro Hironari Kato Etsuji Ishida Toru Ueki Masakuni Fujii Ryo Harada Hiroyuki Seki Ken Hirao Masaki Wato Yutaka Akimoto Masahiro Takatani Hirofumi Tsugeno Jiro Miyaike Tatsuya Toyokawa Mamoru Nishimura Naoko Yunoki Hiroyuki Okada 《Journal of gastroenterology and hepatology》2020,35(1):37-42
96.
97.
Kenichi Kono Nagatsuki Tomura Ryo Yoshimura Tomoaki Terada 《Acta neurochirurgica》2013,155(8):1559-1563
Computational fluid dynamics (CFD) studies on cerebral aneurysms have attempted to identify surrogate hemodynamic parameters to predict rupture risk. We present a case of bilateral mirror image aneurysms, one of which ruptured soon after imaging. Wall shear stress values of the ruptured aneurysm changed by 20–30 % after rupture because of change in the aneurysm shape. Findings from our case suggest that CFD studies comparing unruptured and ruptured aneurysms may not yield valid estimation on aneurysm rupture risk because of changes in aneurysm shape after rupture. Changes in aneurysm shape after rupture should be considered in CFD research. 相似文献
98.
99.
Impact of aldo‐keto reductase family 1 member B10 on the risk of hepatitis C virus‐related hepatocellular carcinoma
下载免费PDF全文
![点击此处可从《Journal of gastroenterology and hepatology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
100.
Influence of different drilling preparation on cortical bone: A biomechanical,histological, and micro‐CT study on sheep
下载免费PDF全文
![点击此处可从《Clinical oral implants research》网站下载免费的PDF全文](/ch/ext_images/free.gif)