全文获取类型
收费全文 | 29243篇 |
免费 | 1551篇 |
国内免费 | 146篇 |
专业分类
耳鼻咽喉 | 373篇 |
儿科学 | 659篇 |
妇产科学 | 579篇 |
基础医学 | 3813篇 |
口腔科学 | 719篇 |
临床医学 | 2320篇 |
内科学 | 7722篇 |
皮肤病学 | 339篇 |
神经病学 | 2467篇 |
特种医学 | 778篇 |
外科学 | 4483篇 |
综合类 | 157篇 |
一般理论 | 11篇 |
预防医学 | 1286篇 |
眼科学 | 389篇 |
药学 | 1951篇 |
中国医学 | 51篇 |
肿瘤学 | 2843篇 |
出版年
2023年 | 160篇 |
2022年 | 259篇 |
2021年 | 589篇 |
2020年 | 334篇 |
2019年 | 415篇 |
2018年 | 554篇 |
2017年 | 408篇 |
2016年 | 509篇 |
2015年 | 528篇 |
2014年 | 744篇 |
2013年 | 962篇 |
2012年 | 1417篇 |
2011年 | 1533篇 |
2010年 | 834篇 |
2009年 | 763篇 |
2008年 | 1414篇 |
2007年 | 1484篇 |
2006年 | 1395篇 |
2005年 | 1378篇 |
2004年 | 1354篇 |
2003年 | 1263篇 |
2002年 | 1299篇 |
2001年 | 926篇 |
2000年 | 948篇 |
1999年 | 837篇 |
1998年 | 360篇 |
1997年 | 272篇 |
1996年 | 254篇 |
1995年 | 219篇 |
1994年 | 195篇 |
1993年 | 164篇 |
1992年 | 618篇 |
1991年 | 645篇 |
1990年 | 551篇 |
1989年 | 554篇 |
1988年 | 537篇 |
1987年 | 516篇 |
1986年 | 436篇 |
1985年 | 440篇 |
1984年 | 328篇 |
1983年 | 252篇 |
1979年 | 240篇 |
1978年 | 141篇 |
1977年 | 146篇 |
1974年 | 132篇 |
1973年 | 122篇 |
1972年 | 141篇 |
1971年 | 129篇 |
1969年 | 140篇 |
1967年 | 130篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
Hidenori Arai Yasuyoshi Ouchi Masayuki Yokode Hideki Ito Hiroshi Uematsu Fumio Eto Shinichi Oshima Kikuko Ota Yasushi Saito Hidetada Sasaki Kazuo Tsubota Hidenao Fukuyama Yoshihito Honda Akihisa Iguchi Kenji Toba Takayuki Hosoi Toru Kita for the Members of the Subcommittee for Aging 《Geriatrics & Gerontology International》2012,12(1):16-22
992.
993.
994.
Kazuhiro Imai Yoshihiro Minamiya Hajime Saito Naohisa Miyakoshi Michio Hongo Yuji Kasukawa Yoshinori Ishikawa Satoru Motoyama Yusuke Sato Yoichi Shimada Jun-ichi Ogawa 《Surgery today》2013,43(7):825-827
We describe a novel technique of using halo-vest-enforced immobilization to relieve anastomotic tension after tracheal sleeve resection. Immediately after the tracheal sleeve resection, four halo titanium pins were inserted in the skulls of the patients to secure the halo-vest. All patients fitted with halo-vests were able to eat and drink and their clinical course was good. Bronchoscopy confirmed the absence of anastomotic leaks and stenoses, and there were no complications associated with the halo-vest. We believe that ensuring neck flexion using a halo-vest after tracheal sleeve resection is an excellent way of relieving anastomotic tension that would predispose the wound to dehiscence. 相似文献
995.
Hiroyuki Nishi Taichi Sakaguchi Shigeru Miyagawa Yasushi Yoshikawa Satsuki Fukushima Shunsuke Saito Takayoshi Ueno Toru Kuratani Yoshiki Sawa 《Surgery today》2013,43(10):1134-1139
Purpose
Postoperative atrial fibrillation/flutter (AF) is still the most common complication after cardiovascular surgery, and it is important to determine the risk factors in order to establish effective management for recent postoperative AF. This study investigated the clinical predictors of postoperative AF using a prospectively collected database.Methods
A total of 418 patients underwent cardiovascular surgery and were enrolled in this study. The relationship between postoperative AF and perioperative factors was examined.Results
Postoperative AF occurred in 134 patients (32.1 %). A univariate analysis showed that an older age, hypertension, perioperative transfusion, use of cardiopulmonary bypass and thoracic aortic surgery were significantly associated with postoperative AF. The incidence of fibrillation was 49.4 % (39/79) in patients having aortic surgery. A multivariate analysis revealed that an older age, transfusion, and aortic surgery were all independent predictors of postoperative AF.Conclusions
An older age, transfusion, and aortic surgery are strong independent predictors of postoperative AF. These findings help to identify high-risk patients for AF after cardiovascular surgery. Careful perioperative management is required for older patients undergoing aortic surgery with cardiopulmonary bypass. 相似文献996.
Jun Endo Satoshi Yamaguchi Masahito Saito Takashi Itabashi Kouji Kita Wataru Koizumi Yoshikuni Kawaguchi Tomomi Asaka Osamu Saegusa 《Journal of orthopaedic science》2013,18(2):250-255
Background
Preoperative traction for hip fractures is of no benefit in semi-urgent surgery. However, its efficacy has not been assessed in cases in which emergency surgery was not possible. We evaluated the efficacy of preoperative skin traction for hip fractures in a level II trauma center in Japan where many patients undergo delayed surgery.Methods
We undertook a randomized controlled trial. Eighty-one patients were randomized to be treated with skin traction (41 patients), or bed rest (40 patients). Preoperative pain was assessed by use of a visual analogue scale and the number of analgesics required. Fracture reduction was measured on the basis of leg-length and neck–shaft angle discrepancies on the radiograph on admission, a day before surgery, and after surgery.Results
The mean time from admission to surgery was 7.5 days. Pain decreased markedly on the day after admission in both the traction and no-traction groups. No significant difference was found during the preoperative waiting period between the groups in either pain score or number of analgesics taken. No significant difference was found in radiographic data either before or after surgery, and satisfactory reduction was achieved after surgery irrespective of the use of skin traction.Conclusions
In our single-institution prospective randomized controlled trial, preoperative skin traction for patients with hip fracture had no effect on pain relief before surgery or reduction of fracture displacement during surgery, irrespective of preoperative waiting time. 相似文献997.
998.
999.
Hirotaka Koyanagi Keisuke Ae Hidetsugu Maehara Masato Yuasa Tomokazu Masaoka Tsuyoshi Yamada Takashi Taniyama Masanori Saito Yuki Funauchi Toshitaka Yoshii Atsushi Okawa Shinichi Sotome 《Journal of orthopaedic research》2013,31(8):1308-1316
1000.