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   4350篇
  免费   316篇
  国内免费   14篇
耳鼻咽喉   22篇
儿科学   98篇
妇产科学   52篇
基础医学   758篇
口腔科学   79篇
临床医学   424篇
内科学   751篇
皮肤病学   85篇
神经病学   779篇
特种医学   198篇
外科学   398篇
综合类   9篇
一般理论   3篇
预防医学   303篇
眼科学   53篇
药学   293篇
中国医学   6篇
肿瘤学   369篇
  2024年   5篇
  2023年   49篇
  2022年   79篇
  2021年   161篇
  2020年   110篇
  2019年   155篇
  2018年   148篇
  2017年   126篇
  2016年   151篇
  2015年   175篇
  2014年   221篇
  2013年   235篇
  2012年   416篇
  2011年   401篇
  2010年   228篇
  2009年   218篇
  2008年   323篇
  2007年   315篇
  2006年   283篇
  2005年   230篇
  2004年   202篇
  2003年   186篇
  2002年   137篇
  2001年   20篇
  2000年   17篇
  1999年   20篇
  1998年   24篇
  1997年   10篇
  1996年   12篇
  1995年   9篇
  1994年   5篇
  1993年   4篇
  1992年   1篇
  1990年   1篇
  1989年   1篇
  1981年   1篇
  1975年   1篇
排序方式: 共有4680条查询结果,搜索用时 31 毫秒
51.
52.
53.
54.
55.
56.
57.
58.
59.
Aims: This study investigates gerontological rehabilitation sessions of Finnish rehabilitees in the framework of life-course agency from the perspectives of temporal orientation and agency. Methods: The research data were obtained by non-participatory observation in 11 individual goal-setting sessions between 11 rehabilitees and their personal counsellors. The data were analysed in accordance with data-driven, qualitative content and narrative analysis, with an emphasis on the life-course agency approach. Results: Four temporal orientations of older rehabilitees were identified in the rehabilitation sessions: (i) timeless, (ii) past, (iii) present, and (iv) life course. For each temporal orientation, the rehabilitees displayed different kinds of agency. Fractured agency was intertwined with the timeless orientation, frozen agency was related to the past orientation, practical agency to the present orientation, and transitional agency emerged in relation to the life-course orientation. Conclusions: The article contributes to the discussion of how older adults’ rehabilitation should be reformed within the Finnish context. The study suggests that a person-centred gerontological rehabilitation process should be conceptualized in terms of an agency-based approach with a personally constructed and temporally embedded life-course perspective. This kind of conceptualizing could promote empowered cooperation and innovative interventions with flexible schedules in the rehabilitation processes of older adults.  相似文献   
60.
AimFew population-based studies have been published on melanoma of unknown primary origin (MUP). This study’s aim is to describe characteristics and survival of MUP patients in the Netherlands, based on nationwide data from the Netherlands Cancer Registry (NCR).MethodsPatient and tumour characteristics of MUP patients were retrieved from the NCR. Subgroups were made according to metastatic site: nodal or distant. Survival rates were calculated using the Kaplan–Meier method. To obtain a better insight in the composition and prognosis of the MUP group, the survival was compared to that of patients with melanoma of a known primary origin (MKP), tumour-node-metastasis (TNM) stage III and IV.ResultsOf all 33,181 melanoma patients diagnosed between 2003 and 2009, 2.6% (n = 857) were diagnosed with MUP. MUP patients with nodal metastases had a similar survival as MKP stage III with macroscopic nodal involvement. After stratification according to the number of involved lymph nodes, the survival of patients with nodal metastases with one involved lymph node was not significantly different between MUP and MKP. The survival of MUP patients with two or more involved lymph nodes was slightly worse than that of MKP stage III patients with macroscopic nodal involvement with two or more involved lymph nodes. MUP patients with distant metastases had a similar survival as MKP stage IV. After stratification according to number of metastatic sites and metastatic site category, the survival in MKP stage IV patients with (sub)cutaneous metastases was slightly worse than MUP distant patients with (sub)cutaneous metastases.ConclusionsThe results of this study imply that MUP patients form a heterogeneous group, and that MUP patients with nodal metastases could be classified as stage III melanoma with macroscopic nodal involvement, and MUP patients with distant metastases as stage IV melanoma.  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