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   3240篇
  免费   101篇
  国内免费   3篇
耳鼻咽喉   23篇
儿科学   113篇
妇产科学   148篇
基础医学   194篇
口腔科学   13篇
临床医学   146篇
内科学   829篇
皮肤病学   30篇
神经病学   595篇
特种医学   69篇
外科学   437篇
综合类   23篇
预防医学   173篇
眼科学   73篇
药学   66篇
中国医学   17篇
肿瘤学   395篇
  2023年   49篇
  2022年   104篇
  2021年   121篇
  2020年   105篇
  2019年   343篇
  2018年   345篇
  2017年   151篇
  2016年   70篇
  2015年   72篇
  2014年   281篇
  2013年   215篇
  2012年   132篇
  2011年   227篇
  2010年   209篇
  2009年   112篇
  2008年   127篇
  2007年   112篇
  2006年   80篇
  2005年   95篇
  2004年   59篇
  2003年   57篇
  2002年   32篇
  2001年   9篇
  2000年   10篇
  1999年   9篇
  1998年   13篇
  1997年   8篇
  1996年   7篇
  1995年   5篇
  1994年   2篇
  1993年   2篇
  1992年   1篇
  1991年   1篇
  1990年   2篇
  1988年   1篇
  1985年   30篇
  1984年   13篇
  1983年   21篇
  1982年   17篇
  1981年   24篇
  1980年   14篇
  1979年   15篇
  1978年   8篇
  1977年   12篇
  1976年   6篇
  1975年   5篇
  1974年   8篇
  1973年   2篇
  1971年   1篇
排序方式: 共有3344条查询结果,搜索用时 62 毫秒
1.
《Cancer radiothérapie》2022,26(4):611-615
In order to provide more convenient irradiation regimens for patient comfort, radiation facility organization and health expenses, new hypofractionated protocols have been evaluated. Moderately (dose/fraction: 2.3 to 3 Gy), then ultra (dose/fraction: 5.2 to 6.1 Gy) hypofractionated irradiations were first validated. The current question is: is it possible to go forward using extreme hypofractionated regimens (EHR) based on 1 to 3 fractions. Different irradiation techniques are under investigation. However, brachytherapy remains the smartest way to deliver a high dose in a small volume. We report prospective and retrospective study results which evaluated EHR for breast and prostate brachytherapy. While oncological outcome and toxicity profile appear extremely encouraging for low-risk breast cancer after a 1 to 4 fractions (6.25 to 20 Gy/fraction), the use of a single fraction of 19 to 23 Gy appears debatable for prostate cancer. Brachytherapy represents an emblematic example of EHR but longer follow-up and more mature results are awaited in order to specify the right indications and refine the EQD2 calculation method including new biological and technical factors.  相似文献   
2.
Adjuvant irradiation is the standard treatment after breast conservative surgery. Normofractionated regimen with an overall treatment time of 5 to 6 weeks is often considered as a limiting factor for irradiation compliance. In order to answer this issue, moderate and more recently extreme hypofractionated protocols appeared. We report here oncological outcomes and toxicity of hypofractionated breast irradiation. After defining the frame of moderate and extreme hypofractionated breast irradiations based on overall treatment time, patient selection criteria were listed. According to their levels of proof, the results of moderate and extreme hypofractionated breast irradiation were analysed. Overall treatment time for moderate hypofractionated breast irradiation ranged from 3 to 4 weeks, while for extreme hypofractionated breast irradiation, it was less than 1 week. For moderate hypofractionated breast irradiation, whole breast irradiation was currently performed with or without lymph node irradiation. Moderate hypofractionated breast irradiation has proven to be as safe and as efficient as normofractionated breast irradiation with level IA evidence. For extreme hypofractionated breast irradiation, phase III randomized trials confirmed that accelerated partial breast irradiation was non-inferior in terms of local control compared to normofractionated whole breast irradiation (with external beam radiation therapy and multicatheter brachytherapy), with similar acute and late toxicity. While the use of intraoperative breast irradiation remains under debate, new very accelerated partial breast irradiation (overall treatment time not exceeding 2 days) protocols emerged with encouraging results. Accelerated partial breast irradiation is warranted for extreme hypofractionated breast irradiation and is indicated for low-risk breast cancers. Moderate and extreme hypofractionated breast irradiation regimens are validated and can be routinely proposed according to patient selection criteria.  相似文献   
3.
4.
5.
6.
7.
8.
The aim of this article is to examine how different ideological perspectives on Swedish disability policy, are reflected in the experiences of disabled people and their families personal assistants. Personal assistance provided within the family can be seen as a hybridization between publicly regulated and paid work performed in the private family sphere, and thus conflicting norms and practices may coexist. In Sweden, family members of the assistant user can be employed as paid personal assistants. Many users combine personal assistance from family members with non-family assistance. Approximately 20–25% of the employed personal assistants are relatives of the assistance users. The empirical data consists of qualitative interviews with seventeen adult users and twenty-three family members employed as PAs with different types of family ties; parent-child relationships, sibling relationships and partner relationships. The findings show that family assistance could entail advantages such as personalised services, to combine instrumental and emotional assistance as well as achieving a power-balance between the parties. But there were also disadvantages, such as unwanted or enforced dependency, with a risk for both parties to be ‘locked up’ in the family. In an overall analysis, we distinguished three broad approaches towards family assistance, family as a substitute, family as a supplement and family first.  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