全文获取类型
收费全文 | 5021篇 |
免费 | 479篇 |
专业分类
林业 | 1篇 |
农学 | 3篇 |
水产渔业 | 3篇 |
畜牧兽医 | 5490篇 |
植物保护 | 3篇 |
出版年
2024年 | 7篇 |
2023年 | 90篇 |
2020年 | 167篇 |
2019年 | 2篇 |
2018年 | 122篇 |
2017年 | 134篇 |
2016年 | 86篇 |
2015年 | 140篇 |
2014年 | 225篇 |
2013年 | 242篇 |
2012年 | 181篇 |
2011年 | 212篇 |
2010年 | 168篇 |
2009年 | 246篇 |
2008年 | 152篇 |
2007年 | 97篇 |
2006年 | 83篇 |
2005年 | 81篇 |
2004年 | 143篇 |
2003年 | 148篇 |
2002年 | 166篇 |
2001年 | 159篇 |
2000年 | 122篇 |
1999年 | 118篇 |
1998年 | 172篇 |
1997年 | 181篇 |
1996年 | 159篇 |
1995年 | 159篇 |
1994年 | 138篇 |
1993年 | 152篇 |
1992年 | 174篇 |
1991年 | 148篇 |
1990年 | 186篇 |
1989年 | 131篇 |
1988年 | 113篇 |
1987年 | 146篇 |
1986年 | 54篇 |
1985年 | 78篇 |
1984年 | 82篇 |
1983年 | 79篇 |
1982年 | 36篇 |
1981年 | 11篇 |
1980年 | 5篇 |
1977年 | 3篇 |
1962年 | 1篇 |
1961年 | 1篇 |
排序方式: 共有5500条查询结果,搜索用时 0 毫秒
61.
62.
63.
64.
65.
This report describes the diagnosis of a fracture of the greater tubercle of the humerus and successful repair with 2 cancellous bone screws in a 420 kg adolescent horse. 相似文献
66.
67.
ROGER B. FINGLAND DVM MS Diplomate ACVS CANDACE I. LAYTON DVM MS Diplomate ACVS GEORGE A. KENNEDY DVM PhD Diplomate ACVP JOHN C. GALLAND PhD 《Veterinary surgery : VS》1995,24(4):320-330
Two suture techniques for tracheal anastomosis after large-segment tracheal resection were compared. Eight cartilages were resected from the trachea of each of 12 dogs; anastomoses with 4-0 polydioxanone suture were created using a simple continuous suture technique in six dogs and a simple interrupted suture technique in six dogs. Surgical time was shorter but apposition of tracheal segments at the time of surgery was less precise with the simple continuous suture technique. The dogs were evaluated for 150 days after surgery. Clinical abnormalities after tracheal resection and anastomosis were not observed. Percent dorsoventral luminal stenosis was calculated by measuring the tracheal lumen diameter on lateral cervical radiographs. Percent luminal stenosis was calculated planimetrically using a computerized digitizing tablet. Anastomotic stenosis was mild in all dogs; however, the mean percent luminal stenosis determined planimetrically was significantly greater for dogs that had the simple continuous suture technique. Planimetric measurements of cross-sectional area made before and after formalin fixation were not significantly different. Radiographic determination of percent dorsoventral luminal stenosis was a poor predictor of diminution of cross-sectional area determined planimetrically. 相似文献
68.
69.
Thromboelastographic assessment of the contribution of platelets and clotting proteases to the hypercoagulable state of dogs with immune‐mediated hemolytic anemia 下载免费PDF全文
70.