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   282篇
  免费   40篇
耳鼻咽喉   2篇
儿科学   13篇
妇产科学   8篇
基础医学   42篇
临床医学   50篇
内科学   49篇
皮肤病学   5篇
神经病学   14篇
特种医学   21篇
外科学   26篇
综合类   23篇
预防医学   27篇
眼科学   1篇
药学   16篇
肿瘤学   25篇
  2021年   8篇
  2020年   7篇
  2019年   4篇
  2018年   4篇
  2017年   8篇
  2016年   5篇
  2015年   5篇
  2014年   5篇
  2013年   4篇
  2012年   7篇
  2011年   5篇
  2010年   9篇
  2009年   6篇
  2008年   12篇
  2007年   4篇
  2006年   10篇
  2005年   11篇
  2004年   11篇
  2003年   26篇
  2002年   6篇
  2001年   3篇
  2000年   5篇
  1999年   7篇
  1998年   3篇
  1997年   5篇
  1996年   8篇
  1995年   5篇
  1994年   6篇
  1993年   3篇
  1992年   12篇
  1991年   9篇
  1990年   16篇
  1989年   9篇
  1988年   6篇
  1987年   5篇
  1986年   5篇
  1985年   4篇
  1981年   3篇
  1980年   3篇
  1979年   4篇
  1978年   4篇
  1977年   3篇
  1975年   4篇
  1974年   3篇
  1973年   3篇
  1971年   3篇
  1970年   2篇
  1968年   2篇
  1963年   2篇
  1936年   2篇
排序方式: 共有322条查询结果,搜索用时 750 毫秒
1.
This paper takes a somewhat slant perspective on flourishing and care in the context of suffering, death and dying, arguing that care in this context consists principally of ‘acts of work and courage that enable flourishing’. Starting with the perception that individuals, society and health care professionals have become dulled to death and the process of dying in Western advanced health systems, it suggests that for flourishing to occur, both of these aspects of life need to be faced more directly. The last days of life need to be ‘undulled’. Reflections upon the experiences of the author as carer and daughter in the face of her mother’s experience of death are used as basis for making suggestions about how care systems and professionals might better assist people in dealing with ‘the most grown up thing’ humans ever do, which is to die.  相似文献   
2.
Proton nuclear magnetic resonance spectroscopy has been used to monitor changes in urinary metabolites in a patient with propionic acidaemia over a period of 10 months and in a patient with methylmalonic aciduria over a period of 11 days. Results could be obtained within 5-10 min of sample receipt. In the spectra on the patient with propionic acidaemia not only could fluctuations in 3-hydroxypropionate and propionylglycine excretion be followed, but also variations in creatine, glycine and betaine, which were often present at millimolar concentrations. The patient with methylmalonic aciduria had an acute episode of severe ketoacidosis during which the glycine excretion fell but creatine excretion rose and then fell on recovery from the episode. The changes in the creatine excretion may reflect disorders in intracellular energy supply. Nuclear magnetic resonance is a powerful technique for monitoring metabolic perturbations in the organic acidurias in 'real-time', allowing the planning and evaluation of therapy.  相似文献   
3.
Image findings are described in two patients who received radiochemically impure Tc-99m MAA radiopharmaceutical preparations. The cases are completely separate and show clinically the presence of hydrolyzed-reduced technetium (TcO2) in a radiopharmaceutical product.  相似文献   
4.
Obtaining Unbiased Estimates of Tagging SNP Performance   总被引:2,自引:0,他引:2  
The use of tagging SNPs (tSNPs) as a cost‐effective means of capturing genetic diversity is widespread. However, the quality of the tSNPs selected is dependent on the initial sample in which they are characterized. If the initial marker set is too sparse the tSNPs chosen will capture less information than a naïve analysis suggests. A simple method has been proposed that should provide a better estimate of the performance of tSNPs. It is shown here that this approach is both unbiased and accurate, even for small numbers of typed markers. The effect of unknown phase is also investigated and it is shown that, excepting very small samples, this has little effect on the accuracy of the method.  相似文献   
5.
6.
7.

Objectives

We explored mothers' and clinicians' experiences of a video feedback intervention adapted for perinatal ‘personality disorder’ (VIPP-PMH) and the acceptability of a randomised controlled trial (RCT) examining its effectiveness.

Design

In-depth qualitative interviews with participants from a two-phase feasibility study of the VIPP-PMH intervention. Participants were mothers experiencing enduring difficulties in managing emotions and relationships, consistent with a ‘personality disorder’, and their 6- to 36-month-old children.

Methods

Forty-four qualitative interviews were conducted, including all nine mothers receiving VIPP-PMH during the pilot phase, 25 of the 34 mothers participating in the RCT (14 allocated to the VIPP-PMH arm and 9 from the control arm), 11 of the 12 clinicians delivering VIPP-PMH and one researcher. Interview data were thematically analysed.

Results

Mothers described feeling motivated to take part in the research and understood the need for randomisation. Research visits were largely experienced positively, with some suggestions for improvement in questionnaire timing and accessibility. Almost all mothers initially felt anxious about being filmed, but reported positive experiences of the intervention, particularly valuing its non-judgemental, positive and child-focussed nature, their supportive relationship with the therapist and the insights they gained on their child.

Conclusions

The findings indicate the likely feasibility and acceptability of undertaking a future definitive RCT of the VIPP-PMH intervention in this population. In designing a future trial, a positive and non-judgemental therapeutic relationship will be important to allay mothers' anxieties about being filmed, and careful consideration should be given to the timing and accessibility of questionnaires used.  相似文献   
8.
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