全文获取类型
收费全文 | 1170篇 |
免费 | 61篇 |
国内免费 | 23篇 |
专业分类
耳鼻咽喉 | 3篇 |
儿科学 | 49篇 |
妇产科学 | 15篇 |
基础医学 | 140篇 |
口腔科学 | 6篇 |
临床医学 | 47篇 |
内科学 | 276篇 |
皮肤病学 | 5篇 |
神经病学 | 105篇 |
特种医学 | 75篇 |
外科学 | 203篇 |
预防医学 | 14篇 |
眼科学 | 19篇 |
药学 | 123篇 |
中国医学 | 4篇 |
肿瘤学 | 170篇 |
出版年
2023年 | 3篇 |
2022年 | 11篇 |
2021年 | 14篇 |
2020年 | 9篇 |
2019年 | 24篇 |
2018年 | 22篇 |
2017年 | 18篇 |
2016年 | 35篇 |
2015年 | 31篇 |
2014年 | 36篇 |
2013年 | 52篇 |
2012年 | 83篇 |
2011年 | 81篇 |
2010年 | 39篇 |
2009年 | 48篇 |
2008年 | 72篇 |
2007年 | 75篇 |
2006年 | 75篇 |
2005年 | 76篇 |
2004年 | 78篇 |
2003年 | 79篇 |
2002年 | 72篇 |
2001年 | 9篇 |
2000年 | 15篇 |
1999年 | 14篇 |
1998年 | 17篇 |
1997年 | 28篇 |
1996年 | 21篇 |
1995年 | 11篇 |
1994年 | 14篇 |
1993年 | 10篇 |
1992年 | 9篇 |
1991年 | 12篇 |
1990年 | 4篇 |
1989年 | 7篇 |
1988年 | 6篇 |
1987年 | 7篇 |
1986年 | 4篇 |
1985年 | 5篇 |
1984年 | 2篇 |
1982年 | 4篇 |
1981年 | 3篇 |
1979年 | 4篇 |
1978年 | 2篇 |
1977年 | 3篇 |
1976年 | 2篇 |
1973年 | 1篇 |
1969年 | 1篇 |
1968年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有1254条查询结果,搜索用时 15 毫秒
31.
32.
Noninvasive investigation of exocrine pancreatic function: Feasibility of cine dynamic MRCP with a spatially selective inversion‐recovery pulse
下载免费PDF全文
![点击此处可从《Journal of magnetic resonance imaging : JMRI》网站下载免费的PDF全文](/ch/ext_images/free.gif)
33.
34.
35.
Uetsuka Y Hosoda S Kasanuki H Aosaki M Murasaki K Ooki K Inoue M Akiyama E Kitada M 《Heart and vessels》2000,15(3):124-128
The thrombotest (TT) technique has been widely used in Japan for monitoring oral anticoagulant therapy (OAT). The therapeutic
range was originally recommended to be 10%–25%. However, the International Committee for Standardization in Hematology/International
Committee on Thrombosis and Hemostasis (ICSH/ICTH) recommended using the international normalized ratio of prothrombin time
(PT-INR) for monitoring OAT. It is necessary to use a universal standard measure for monitoring OAT in accordance with the
ICSH/ISTH recommendation. We simultaneously measured TT and PT in blood samples from 1 157 patients on long-term warfarin
therapy, and studied the correlation between TT and PT-INR. An excellent linear correlation was obtained between TT-INR and
PT-INR with the regression equation PT-INR = 1.0420 TT-INR − 0.0987 (r = 0.905, P < 0.001). We also examined the correlation between the incidence of thromboembolism in 170 patients receiving warfarin therapy
after prosthetic valve replacement; 50.5% received concomitant antiplatelet therapy. Thromboembolism occurred in 9 of 170
patients during a mean follow-up period of 2.44 years. The average TT values in patients with and without thromboembolism
were 26.4% (PT-INR: 1.53) and 21.1% (1.73), respectively (P < 0.01). The incidence of thromboembolism did not differ significantly between patients on warfarin alone (average TT: 22.2%)
and those on warfarin and antiplatelet agent (average TT: 20.9%). Our results suggest that the incidence of thromboembolism
is low in Japan despite a less intensive regimen having been adopted.
Received: June 22, 2000 / Accepted: October 4, 2000 相似文献
36.
37.
38.
Katsuyoshi Sakaguchi Sawako Uehara Takakazu Yagi Shouichi Miyawaki 《Orthodontic Waves》2012,71(3):79-84
PurposeIt is clinically believed that humans with a broad and rounded dental arch accompanied by a shallow curve of Spee have good masticatory function. However, the relationship between them has not been elucidated fully. The purpose of this study was to quantitatively examine the relationship between occlusal curvatures and bite force.Materials and methodsBite force was measured and analyzed in 20 young adults with healthy permanent dentition and normal stomatognathic function using a bite force recording system. Study models of the mandibular dental arch were scanned with CCD cameras, and X, Y and Z coordinates of the cusp tips of the molars were recorded. Their occlusal curvatures were analyzed using a three-dimensional measurement system.ResultsBite force showed significant positive correlations (0.52 < R < 0.57) with the radius of the anteroposterior occlusal arc of the molar region and the radii of the translateral occlusal arcs in the second premolar, first molar and second molar regions, and showed significant positive correlation (R = 0.71) with the radius of the occlusal sphere of the molar region.ConclusionsIt was suggested that occlusal curvatures is related with the magnitude of bite force, and that the three dimensional spherical analysis of occlusal curvatures is useful predictor of the masticatory function. 相似文献
39.
40.
Atsushi Fukunaga Katsuyoshi Shimizu Takahito Yazaki Masato Ochiai 《Acta neurochirurgica》2013,155(9):1693-1697