全文获取类型
收费全文 | 2021篇 |
免费 | 145篇 |
国内免费 | 43篇 |
专业分类
耳鼻咽喉 | 17篇 |
儿科学 | 58篇 |
妇产科学 | 47篇 |
基础医学 | 267篇 |
口腔科学 | 29篇 |
临床医学 | 191篇 |
内科学 | 462篇 |
皮肤病学 | 56篇 |
神经病学 | 73篇 |
特种医学 | 141篇 |
外科学 | 232篇 |
综合类 | 133篇 |
预防医学 | 221篇 |
眼科学 | 37篇 |
药学 | 106篇 |
中国医学 | 1篇 |
肿瘤学 | 138篇 |
出版年
2022年 | 10篇 |
2021年 | 27篇 |
2019年 | 14篇 |
2018年 | 23篇 |
2017年 | 19篇 |
2016年 | 21篇 |
2015年 | 31篇 |
2014年 | 54篇 |
2013年 | 41篇 |
2012年 | 114篇 |
2011年 | 110篇 |
2010年 | 72篇 |
2009年 | 62篇 |
2008年 | 100篇 |
2007年 | 99篇 |
2006年 | 93篇 |
2005年 | 76篇 |
2004年 | 74篇 |
2003年 | 77篇 |
2002年 | 62篇 |
2001年 | 51篇 |
2000年 | 45篇 |
1999年 | 53篇 |
1998年 | 62篇 |
1997年 | 61篇 |
1996年 | 49篇 |
1995年 | 30篇 |
1994年 | 37篇 |
1993年 | 37篇 |
1992年 | 46篇 |
1991年 | 45篇 |
1990年 | 42篇 |
1989年 | 42篇 |
1988年 | 37篇 |
1987年 | 45篇 |
1986年 | 26篇 |
1985年 | 29篇 |
1984年 | 18篇 |
1983年 | 23篇 |
1982年 | 23篇 |
1981年 | 13篇 |
1980年 | 14篇 |
1979年 | 15篇 |
1978年 | 19篇 |
1977年 | 21篇 |
1976年 | 22篇 |
1975年 | 18篇 |
1974年 | 16篇 |
1973年 | 14篇 |
1972年 | 10篇 |
排序方式: 共有2209条查询结果,搜索用时 15 毫秒
1.
Akira Sawaki Nobumasa Mizuno Kuniyuki Takahashi Tsuneya Nakamura Masahiro Tajika Hiroki Kawai Toshifumi Isaka Hiroshi Imaoka Yasuyuki Okamoto Masatoshi Aoki Hiroyuki Inoue Ahmed AS Salem Yasushi Yatabe Kenji Yamao 《Digestive endoscopy》2006,18(1):40-44
Background: Gastrointestinal stromal tumors (GIST) are one of the most common mesenchymal tumors of the gastrointestinal tract. GIST are defined by positive immunohistochemical staining for KIT or CD34 and thus are generally diagnosed after surgery. Because small GIST are rarely diagnosed before surgery, the clinical course of these small tumors is not clear. The aim of the present study was to follow changes in size and configuration of small GIST that were pathologically confirmed using endoscopic ultrasonography‐guided fine‐needle aspiration biopsy (EUS‐FNAB). Methods: Between July 1997 and December 2003, 16 tumors in 16 patients (10 men and 6 women) with an immunohistochemical diagnosis of GIST were regularly followed in our hospital. The median patient age when EUS‐FNAB was performed was 62 years (range 26–82 years) and the median follow‐up period was 4.9 years (range 0.5–9.6 years). Results: Fourteen tumors showed no remarkable changes in size and shape during follow up compared with the initial diagnosis. Two tumors enlarged: one tumor approximately doubled its diameter in 8 years and the other tumor increased from 1.8 cm at diagnosis to up to 10 cm after only 2 years. Doubling time of the latter tumor was calculated as 3.1 months. Conclusions: We conclude that EUS‐FNAB might be a good modality for final diagnosis of GIST without surgery, and that GIST without rapid growth on follow up can be endoscopically followed. 相似文献
2.
Coronary artery bypass grafts: visualization with MR imaging 总被引:1,自引:0,他引:1
3.
4.
Hypotony after fistulizing surgery is common, and most cases resolve without complications. Occasionally, a flat anterior chamber in phakic or pseudophakic eyes may lead to corneal decompensation or cataract formation. In aphakic eyes that have undergone previous vitreous surgery, flat anterior chambers will not develop, but large choroidal detachments and delayed suprachoroidal hemorrhage may occur while the eye is soft. To maintain intraocular pressure (IOP) in the early postoperative period, the authors used a technique to seal the drainage tube with a Vicryl tie, combined with injection of sodium hyaluronate, sulfur hexafluoride (SF6), or perfluoropropane (C3F8), perioperatively in 28 eyes undergoing glaucoma tube implant surgery. Eight eyes were treated with injection of sodium hyaluronate, 8 with SF6, and 12 eyes with C3F8. Hypotony was significantly less frequent in eyes treated with C3F8 compared with sodium hyaluronate (P less than 0.05). Mean IOP was significantly higher for eyes treated with C3F8 injection compared with sodium hyaluronate for the first 4 days after surgery (P less than 0.05). 相似文献
5.
6.
Seeing the Light: Protein Theories of General Anesthesia 总被引:1,自引:0,他引:1
7.
8.
Peter J. Franks PhD ; Hanne Winterberg RGN DN BSc ; Christine J. Moffatt RGN PhD 《Wound repair and regeneration》2002,10(3):133-140
Little is known of the impact of pressure ulceration on adult patients' health-related quality of life. The purpose of this study was to determine the impact pressure ulceration has on pressure ulcer patients cared for in the community. A case control study design was used by drawing a random sample from patients receiving community nursing care, stratified by the presence of pressure ulceration. In all, 75 patients with pressure ulcers were compared with 100 controls without ulcers using the four-point ulcer grading scale described by United Kingdom consensus guidelines. Patients were interviewed using the Short Form-36 (SF-36) questionnaire and activities of daily living assessed using the modified Barthel scale. Patients with pressure ulcers had significantly poorer physical function (mean difference (d) = 37.6, 95% CI 28.6-46.6, p < 0.001) and social functioning (d = 33.9, 95 % CI 24.0-43.9, p < 0.001) than published age- and sex-matched normative data from the United Kingdom. The difference between cases and controls was much smaller in these domains, with neither approaching statistical significance. After adjustment for age and gender, scores for bodily pain were poorer in patients with no ulceration (d = -10.5, 95% CI - 20.6 to - 0.4, p = 0.042) indicating greater pain in these patients compared with the cases with ulceration. Activities of daily living determined by the modified Barthel scale showed reduced self-care (d = -7.6, 95% CI -12.5 to - 2.7, p = 0.010) and mobility (d = -9.2, 95% CI -14.6 to - 3.8, p = 0.001) in patients with pressure ulceration. The overall ability to perform these activities was also significantly poorer in this group (d = -16.3, 95% CI -27.3 to -5.3, p = 0.004). While patients with pressure ulceration experience some deficits in their health-related quality of life compared with a normal population, these differences are similar to those experienced by other patients receiving community nursing care. 相似文献
9.
Evaluation of a new enzyme-linked immunosorbent assay test for rotavirus antigen in faeces 总被引:6,自引:0,他引:6
下载免费PDF全文
![点击此处可从《Journal of clinical pathology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
A new commercial test for the diagnosis of rotavirus gastroenteritis was assessed. With some modifications it compared favourably with electron microscopy and immunofluorescence. 相似文献
10.