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   4028篇
  免费   446篇
  国内免费   10篇
耳鼻咽喉   34篇
儿科学   245篇
妇产科学   62篇
基础医学   524篇
口腔科学   184篇
临床医学   411篇
内科学   937篇
皮肤病学   67篇
神经病学   395篇
特种医学   225篇
外国民族医学   1篇
外科学   381篇
综合类   129篇
一般理论   4篇
预防医学   353篇
眼科学   36篇
药学   311篇
中国医学   7篇
肿瘤学   178篇
  2021年   42篇
  2019年   43篇
  2018年   56篇
  2017年   48篇
  2016年   42篇
  2015年   72篇
  2014年   55篇
  2013年   113篇
  2012年   134篇
  2011年   142篇
  2010年   96篇
  2009年   103篇
  2008年   150篇
  2007年   126篇
  2006年   136篇
  2005年   130篇
  2004年   148篇
  2003年   133篇
  2002年   120篇
  2001年   121篇
  2000年   92篇
  1999年   115篇
  1998年   88篇
  1997年   105篇
  1996年   84篇
  1995年   77篇
  1994年   62篇
  1993年   64篇
  1992年   80篇
  1991年   103篇
  1990年   89篇
  1989年   92篇
  1988年   102篇
  1987年   119篇
  1986年   97篇
  1985年   83篇
  1984年   60篇
  1983年   61篇
  1982年   59篇
  1980年   49篇
  1979年   74篇
  1978年   61篇
  1977年   55篇
  1976年   41篇
  1975年   41篇
  1974年   46篇
  1973年   41篇
  1972年   36篇
  1970年   39篇
  1969年   40篇
排序方式: 共有4484条查询结果,搜索用时 31 毫秒
1.
The cephalometric measurement known as Wits appraisal (AOBO) was studied to determine its importance in diagnosis, treatment, and prediction of treatment success. The Wits appraisal is used primarily to identify unreliable ANB values (those that do not accurately reflect the degree of horizontal jaw discrepancy, ie, those that differ greatly from the AOBO value). Therefore, differences between AOBO and ANB also were evaluated. Because neither measurement alone can assess jaw discrepancies with total accuracy, they were combined, plotted on a scattergram, and divided into equal zones to create a new index of horizontal skeletal discrepancies and treatment predictability. Pretreatment values correspond to treatment difficulty, and posttreatment values correspond to the effectiveness of treatment. Treatment time for each zone also was evaluated. We were able to draw several conclusions from this study. First, combining AOBO and ANB values results in a more accurate measurement of treatment difficulty. These combined values also can be used to predict both treatment time and the success of treatment for horizontal discrepancies. Second, the AOBO value predicts variations in treatment time at each ANB value. Finally, adding ANB and AOBO values and then dividing the total yields zones that represent statistically significant differences in treatment times and percentages of success. The zones also correlate with the difference between AOBO and ANB measurements.  相似文献   
2.
A crossover double-blind controlled trial was performed on 36 patients with rheumatoid arthritis to assess the necessity for serum salicylate monitoring in determining optimal dosage. There was no clinically or statistically significant increase in the clinical improvement of patients associated with serum monitoring but potentially toxic serum levels occurred without tinnitus when serum monitoring was not used.  相似文献   
3.
4.
5.
Two sets of factors will ultimately influence the outcome of the burned upper extremity. The first set of factors is the depth and severity of the burn. The second set is the group of complications of the burn injury attributable to edema, inflammation, immobility, and malposition. An awareness of the potential pitfalls that follow burn injury has resulted in improved primary care and a lessening of deformity. Progressive acute care with topical chemotherapy, early motion, thoughtful splinting, and timely burn wound closure are essential to reduce the need for secondary operations. Reconstructive efforts should be tailored to the individual needs of the patient. These procedures should be carefully planned with a view toward balancing aesthetic and functional considerations and minimizing the time required for rehabilitation.  相似文献   
6.
7.
8.
9.
Urogenital infections are established as hazards to male fertility. Various pathophysiological hypotheses have evolved from experimental and clinical studies, facilitating explanation of the effects of bacteria and immunological events on reproductive tissues. Numerous current studies have identified and evaluated infectious mediators accounting for specific molecular events in urogenital infections. Valuable studies can be expected to appear in the future due to improvements in diagnostic procedures and new classifications of urogenital infections.  相似文献   
10.
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