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   864篇
  免费   68篇
  国内免费   28篇
儿科学   63篇
妇产科学   12篇
基础医学   82篇
口腔科学   48篇
临床医学   114篇
内科学   167篇
皮肤病学   13篇
神经病学   16篇
特种医学   253篇
外科学   60篇
综合类   18篇
预防医学   31篇
眼科学   4篇
药学   43篇
肿瘤学   36篇
  2021年   5篇
  2020年   1篇
  2019年   6篇
  2018年   16篇
  2017年   7篇
  2016年   7篇
  2015年   13篇
  2014年   17篇
  2013年   10篇
  2012年   7篇
  2011年   13篇
  2010年   32篇
  2009年   21篇
  2008年   11篇
  2007年   27篇
  2006年   22篇
  2005年   13篇
  2004年   12篇
  2003年   18篇
  2002年   13篇
  2001年   13篇
  2000年   10篇
  1999年   17篇
  1998年   60篇
  1997年   72篇
  1996年   78篇
  1995年   47篇
  1994年   38篇
  1993年   44篇
  1992年   17篇
  1991年   12篇
  1990年   19篇
  1989年   39篇
  1988年   40篇
  1987年   30篇
  1986年   30篇
  1985年   31篇
  1984年   8篇
  1983年   10篇
  1982年   12篇
  1981年   10篇
  1980年   12篇
  1979年   3篇
  1978年   4篇
  1977年   13篇
  1976年   10篇
  1975年   6篇
  1969年   1篇
  1966年   1篇
  1950年   1篇
排序方式: 共有960条查询结果,搜索用时 78 毫秒
911.
912.
913.
Gelfand  DW; Ott  DJ 《Radiology》1981,140(1):37
  相似文献   
914.
Magnetic resonance (MR) imaging of the patient with acute cervical injury is important because of the potential prognostic significance of the appearance of the spinal cord at the time of injury. However, cervical traction may involve equipment incompatible with the magnetic environment, and transferring the patient to the imaging table may make it difficult to maintain traction. The authors describe a simple, inexpensive, and reliable method for providing cervical traction within the magnet room.  相似文献   
915.
916.
Reply          下载免费PDF全文
DJ Shale  JH Faux    DJ Lane 《Thorax》1987,42(10):831
  相似文献   
917.
The authors describe 7 male patients from two unrelated families who presented with what appears to be a heretofore undiagnosed X-linked variant of Ehlers-Danlos syndrome. Unlike the eight previously reported types, this variant is manifested by specific skeletal abnormalities, including occipital exostoses, widening and bowing of multiple long bones at tendinous and ligamentous insertion sites, and deformed clavicles. Major clinical complications include genitourinary problems, chronic diarrhea with malabsorption, and/or syncopal episodes. Laboratory tests suggest that this variant may represent the true lysyl-oxidase-deficient form of Ehlers-Danlos syndrome.  相似文献   
918.
919.
Acne-associated spondylarthropathy: radiographic features   总被引:3,自引:0,他引:3  
Ellis  BI; Shier  CK; Leisen  JJ; Kastan  DJ; McGoey  JW 《Radiology》1987,162(2):541-545
Experience with six patients with severe acne and associated axial and peripheral arthritis is described. Four of the patients had a dermatologic triad of severe acne, hidradenitis suppurativa, and dissecting cellulitis of the scalp, the so-called follicular occlusion triad. All were black men with episodic peripheral arthropathy and low back pain. One had inflammatory bowel disease. Rheumatoid factor and HLA-B27 were absent in five patients who had these determinations. An erosive and proliferative arthritis of the axial and appendicular skeleton is described. The radiographic findings were indistinguishable from those of the seronegative spondylarthropathies. We found no previous reports in the radiologic literature describing this articulocutaneous entity.  相似文献   
920.
Objective To identify ageing and retirement patterns of the pharmacy workforce since 1986 and the implications of those changes for future workforce planning. Method Australian Bureau of Statistics census data from 1986 to 2001 were used to examine ageing of the pharmacy workforce and attrition of pharmacists aged 50 years and over. The number of pharmacists to retire was projected over the next 20 years. Key findings The Australian pharmacy workforce has aged significantly since 1986 (P < 0.01). Forty‐one per cent of pharmacists practising in 2001 are predicted to retire by 2026. Baby boomer pharmacists were more likely to work long hours (49+ per week) in 2001 than in 1986, and than generation X pharmacists in 2001. The proportion of women in pharmacy has increased from 39% in 1986 to over 50% in 2001. Women are still more likely to work part‐time than males, although they are less likely to do so than they were in 1986. Conversely, the proportion of male pharmacists working part‐time is rising. Conclusions With baby boomer and older cohorts currently making up 65% of the pharmacy workforce, their retirement will place increased pressure on a profession already facing severe shortages. The growing proportion of female pharmacists and their generally lower workforce participation mean the potential for continued pharmacy shortages.  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