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   641篇
  免费   30篇
  国内免费   5篇
耳鼻咽喉   8篇
儿科学   27篇
妇产科学   22篇
基础医学   63篇
口腔科学   11篇
临床医学   60篇
内科学   99篇
皮肤病学   8篇
神经病学   26篇
特种医学   84篇
外科学   112篇
综合类   43篇
预防医学   37篇
眼科学   6篇
药学   26篇
肿瘤学   44篇
  2021年   5篇
  2020年   8篇
  2019年   3篇
  2018年   13篇
  2017年   5篇
  2016年   8篇
  2015年   8篇
  2014年   11篇
  2013年   41篇
  2012年   15篇
  2011年   22篇
  2010年   28篇
  2009年   26篇
  2008年   17篇
  2007年   21篇
  2006年   34篇
  2005年   18篇
  2004年   41篇
  2003年   18篇
  2002年   12篇
  2001年   9篇
  2000年   8篇
  1999年   10篇
  1998年   26篇
  1997年   24篇
  1996年   22篇
  1995年   32篇
  1994年   18篇
  1993年   7篇
  1992年   9篇
  1991年   6篇
  1990年   7篇
  1989年   16篇
  1988年   10篇
  1987年   12篇
  1986年   12篇
  1985年   6篇
  1984年   6篇
  1983年   11篇
  1982年   4篇
  1981年   5篇
  1980年   7篇
  1979年   5篇
  1978年   5篇
  1977年   7篇
  1975年   3篇
  1974年   3篇
  1972年   7篇
  1966年   2篇
  1923年   5篇
排序方式: 共有676条查询结果,搜索用时 0 毫秒
91.
92.
During the Civil War, for the first time in medical history, a large number of excellent photographs were taken of many wounded Union and (to a lesser degree) Confederate soldiers by photographers assigned by their doctors or surgeons, or by photographers employed by the Army Medical Museum. The majority of these photographs demonstrating facial, head, and neck wounds have not been published since the Civil War, except for a few minor exceptions [3, 9]. The actual art of printing photographs in medical journals, daily newspapers, and magazines did not even begin until the early 1880s—almost two decades after the Civil War [24]. Any photographs that could be found in certain rare medical and surgical books during and immediately after the War were actually pasted into those books by their printers.Presented at The New York Regional Society for Plastic and Reconstructive Surgery and the Section on Plastic and Reconstructive Surgery, The New York Academy of Medicine, New York, NY, March 7, 1994, and at the 73rd Annual Meeting of the American Association of Plastic Surgeons, St. Louis, Missouri, May 2, 1994.  相似文献   
93.
报道4个N-(1-[1-乙氧羰基-3-(对甲)苯氨甲酰基]丙基甘氨酰}-N-取代甘氨酸(XI1~4)和5个1-[1-乙(或甲)氧羰基-3-(对甲)苯氨甲酰基]丙基-4-取代-1,4-哌嗪-2,5-二酮(XII1~5)共9个估计有血管紧张素转化酶抑制活性化合物的合成和鉴定。所有这些化合物及9个相应的酯(X1~9)均未见文献报道。药理初试结果,化合物XII2,XII5,XI4和XII1均有较强降压活性。  相似文献   
94.
Splanchnic artery aneurysms and pseudoaneurysms: transcatheter embolization   总被引:9,自引:0,他引:9  
Baker  KS; Tisnado  J; Cho  SR; Beachley  MC 《Radiology》1987,163(1):135-139
Over the past 7 years, eight patients with splanchnic artery aneurysms and pseudoaneurysms were studied and treated. Transcatheter embolization resulted in occlusion of the lesions in all eight patients. Potentially risky and difficult surgery was avoided completely in four patients. Three patients had elective surgery at a later date when their condition was more stable. The remaining patient had definitive surgery after embolization. Transcatheter embolization should be the initial treatment of choice in splanchnic artery aneurysms and pseudoaneurysms.  相似文献   
95.
Rholl  KS; Lee  JK; Ling  D; Sicard  GA; Griffith  RC; Freeman  M 《Radiology》1986,160(1):113-117
Findings of magnetic resonance (MR) imaging in acute renal rejection and acute tubular necrosis (ATN) were studied in dogs. On T1-weighted images, corticomedullary differentiation was absent in kidneys undergoing acute rejection. The loss of corticomedullary differentiation in these kidneys was secondary to a decrease in the relative signal intensity of the cortex, indicating prolongation of the T1 relaxation time of the cortex. In contrast, corticomedullary differentiation was preserved on T1-weighted images of autotransplanted kidneys and kidneys with ATN. MR imaging findings correlated with changes in water content in these three groups of kidneys. Kidneys undergoing acute rejection showed a marked increase in water content compared with kidneys in the other two groups. No change in fat content was found in any group.  相似文献   
96.
97.
98.
99.
100.
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