首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   157篇
  免费   22篇
畜牧兽医   179篇
  2023年   3篇
  2020年   24篇
  2018年   6篇
  2017年   7篇
  2016年   4篇
  2015年   5篇
  2014年   12篇
  2013年   12篇
  2012年   6篇
  2011年   4篇
  2010年   6篇
  2009年   14篇
  2008年   5篇
  2007年   8篇
  2006年   4篇
  2005年   4篇
  2004年   5篇
  2003年   4篇
  2002年   6篇
  2001年   2篇
  2000年   2篇
  1999年   1篇
  1998年   2篇
  1997年   2篇
  1996年   3篇
  1995年   1篇
  1994年   6篇
  1993年   3篇
  1992年   2篇
  1991年   3篇
  1990年   3篇
  1989年   4篇
  1988年   1篇
  1987年   3篇
  1984年   2篇
排序方式: 共有179条查询结果,搜索用时 156 毫秒
101.
102.
103.
104.
105.
106.
107.
108.
109.
Because of the lack of a large animal hospital in Israel, and the need to provide radiology service to equine and bovine patients, a complete radiology mobile laboratory for field work was built. The laboratory was constructed in a van-type automobile and is equipped with a condenser-discharge x-ray unit, a tabletop automatic processor, and a dark room facility. The qualities of each of the components and the operation of the laboratory are discussed.  相似文献   
110.
A retrospective study was performed to evaluate the sonographic features of gastrointestinal (GI) perforation in dogs and cats. Sonographic findings in 19 animals (14 dogs and 5 cats) included regional bright mesenteric fat (19), peritoneal effusion (16), fluid-filled stomach or intestines (12), GI wall thickening (11), presence of free air (9), loss of GI wall layering (9), regional lymphadenopathy (8), reduced GI motility (7), pancreatic changes (4), corrugated intestines (4), presence of a mass (3), presence of a foreign body (3), and mineralization of the gastric wall (1). In 14 patients, "perforation" was listed as a differential diagnosis by the sonographer. Abdominal radiographs and radiographic reports were available for 14 patients. Radiographic findings were decreased serosal detail (12), free air (8), peritoneal contrast medium (1), and suspected foreign body (1). GI perforation was listed as radiographic diagnosis in eight patients, seven of which had evidence of pneumoperitoneum, and one had leakage of contrast material on an upper GI study. In 9/14 patients with radiography, "GI perforation" was listed as a sonographic diagnosis. In three patients in which free air was diagnosed sonographically, radiographs were either not available (2) or the presence of free air was not detected at presentation (1). Peritoneal fluid analysis was performed in nine patients, five of which were identified as septic inflammation, and the remaining four were classified as neutrophilic inflammation with no etiologic agent identified. The histologic or surgical diagnoses were as follows: three intestinal surgical dehiscence; one percutaneous endoscopic gastrostomy tube site leakage; one duodenal adenocarcinoma; one ileocolic lymphoma; one trichobezoar; one ascarid impaction; and one bobby pin foreign body. In the remaining 10 patients, a focal area of gastric/intestinal ulceration or transmural necrosis with perforation was identified without evidence of an underlying cause.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号