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   3563篇
  免费   213篇
  国内免费   23篇
耳鼻咽喉   42篇
儿科学   137篇
妇产科学   64篇
基础医学   477篇
口腔科学   375篇
临床医学   218篇
内科学   696篇
皮肤病学   53篇
神经病学   311篇
特种医学   264篇
外科学   304篇
综合类   43篇
预防医学   395篇
眼科学   66篇
药学   237篇
中国医学   38篇
肿瘤学   79篇
  2023年   38篇
  2022年   52篇
  2021年   114篇
  2020年   73篇
  2019年   98篇
  2018年   113篇
  2017年   79篇
  2016年   94篇
  2015年   107篇
  2014年   139篇
  2013年   178篇
  2012年   211篇
  2011年   243篇
  2010年   173篇
  2009年   143篇
  2008年   208篇
  2007年   191篇
  2006年   158篇
  2005年   152篇
  2004年   94篇
  2003年   105篇
  2002年   129篇
  2001年   64篇
  2000年   54篇
  1999年   58篇
  1998年   67篇
  1997年   58篇
  1996年   53篇
  1995年   29篇
  1994年   56篇
  1993年   32篇
  1992年   34篇
  1991年   42篇
  1990年   24篇
  1989年   37篇
  1988年   31篇
  1987年   26篇
  1986年   31篇
  1985年   21篇
  1984年   26篇
  1983年   20篇
  1982年   17篇
  1981年   27篇
  1980年   9篇
  1979年   7篇
  1978年   17篇
  1977年   13篇
  1976年   14篇
  1975年   14篇
  1970年   4篇
排序方式: 共有3799条查询结果,搜索用时 62 毫秒
1.
Depigmented lesions may occur as postinflammatory sequelae of subacute cutaneous lupus erythematosus (SCLE), leading to great psychosocial impact. A 53‐year‐old male patient presented with post‐SCLE depigmented facial lesions after five years of disease stability. We proposed surgical treatment with melanocyte‐keratinocyte transplantation procedure (MKTP), and after five months the patient achieved 90% repigmentation, without Koebner phenomenon (KP). In theory, KP is a possible complication of MKTP procedure since the preparation of the receptor area involves the use of dermabrasion. In an attempt to avoid it, we suggest to maintain the treatment of the underlying disease and wait for a minimum period of disease stability before the procedure.  相似文献   
2.
3.
In the work described here, our aim was to determine, in an elderly population, changes in muscle thickness (MT), cross-sectional area (CSA) and echo intensity (EI) of the quadriceps muscles at four time points (0, 5, 10 and 15 min; i.e., T0, T5, T10 and T15, respectively) after changing from a standing to supine position. Twenty-one elderly participants (14 men: 68.1 ± 4.6 y; 8 women: 66.8 ± 4.1 y) were evaluated at four time points. Rectus femoris CSA (RFCSA), MT and EI of the quadriceps femoris (QF) muscles were assessed. EI significantly increased from T0 to T5, T10 and T15 (p < 0.001), whereas no differences were observed between T5 and T15 in the rectus femoris (RFEI), vastus intermedius (VIEI) and quadriceps femoris (QFEI). No differences were observed between any time points in the RFCSA and MT of QF muscles. In summary, these results suggest that periods >5 min are not necessary to obtain consistent MT and EI measurements of quadriceps femoris muscles in the elderly population.  相似文献   
4.
5.
Granulomatous slack skin is an indolent T-cell lymphoma, considered to be a variant of mycosis fungoides. Clinically it is characterized by areas of redundant skin, wrinkled, inelastic, with variable erythema and infiltration besides a poikilodermic surface. A differential diagnosis unknown to most dermatologists is the giant cell tumor of soft tissue, which is an extremely rare low-grade sarcoma. The authors report a patient who had undergone extensive surgery because of a primary diagnosis of giant cell tumor of soft tissue, but which proved to be granulomatous slack skin after a second interventional procedure with confirmatory histopathology.  相似文献   
6.
7.
8.
Mandibulofacial dysostosis (Treacher Collins Syndrome) is an autosomal dominant genetic disorder that probably derives from inhibition of the facial structures from the first and second branchial arches. The facial pattern of the syndrome is a convex facial profile with a prominent nose above a retruded chin. The eyes are deformed by antimongoloid slant of the palpebral fissures and facial bones are hypoplastic. The alterations are caused by mutation in gene 5q32-33.1, which encodes the nucleolar phosphoprotein treacle. Computed tomography images are able to demonstrate craniofacial bones, allowing the morphological analysis of these bones in individuals with complex deformities. The purpose of this paper is to present the results of a clinical and computed tomography investigation of two patients with Treacher Collins syndrome.  相似文献   
9.
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