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   1262篇
  免费   278篇
  国内免费   4篇
耳鼻咽喉   11篇
儿科学   22篇
妇产科学   54篇
基础医学   15篇
口腔科学   135篇
临床医学   619篇
内科学   143篇
皮肤病学   14篇
神经病学   41篇
特种医学   41篇
外科学   99篇
预防医学   257篇
眼科学   10篇
药学   22篇
肿瘤学   61篇
  2024年   6篇
  2023年   45篇
  2022年   7篇
  2021年   11篇
  2020年   42篇
  2019年   11篇
  2018年   62篇
  2017年   72篇
  2016年   71篇
  2015年   82篇
  2014年   91篇
  2013年   133篇
  2012年   34篇
  2011年   36篇
  2010年   65篇
  2009年   81篇
  2008年   41篇
  2007年   32篇
  2006年   33篇
  2005年   23篇
  2004年   22篇
  2003年   15篇
  2002年   20篇
  2001年   27篇
  2000年   19篇
  1999年   30篇
  1998年   39篇
  1997年   51篇
  1996年   56篇
  1995年   35篇
  1994年   37篇
  1993年   29篇
  1992年   28篇
  1991年   26篇
  1990年   29篇
  1989年   11篇
  1988年   11篇
  1987年   12篇
  1986年   8篇
  1985年   11篇
  1984年   6篇
  1983年   8篇
  1982年   6篇
  1981年   4篇
  1979年   3篇
  1978年   2篇
  1977年   7篇
  1976年   4篇
  1973年   4篇
  1971年   2篇
排序方式: 共有1544条查询结果,搜索用时 15 毫秒
61.
The effects of cervical bracing on swallowing function have not been evaluated in neurologically intact individuals. An 83-year-old woman fell, striking her head, and suffered C1, odontoid, and C3 fractures. She had no neurologic deficits and was placed in a Minerva brace. Subsequently, she developed coughing during her meals, a low-grade fever, and transient hoarseness, and complained of stiffness in the facial muscles. Aspiration pneumonia in the left lower lobe was diagnosed. In the absence of any neurologic condition, this was attributed to the Minerva brace. Less than 1 week later, the brace was replaced with a halo-vest, and the dysphagia resolved. This case shows that dysphagia and aspiration pneumonia may be caused by wearing a cervical brace and illustrates the importance of assessing swallowing in individuals who wear such braces. Particular attention should be paid to swallowing and cervical bracing in patients with additional risk factors for dysphagia such as advanced age or neurologic deficits.  相似文献   
62.
This study assessed failures of allograft prosthesis composites (APC) and revisions with a new APC. Twenty-one patients with failed APC’s after revision hip arthroplasty with severe proximal femoral bone loss underwent revision with a new APC. Causes of failure were aseptic loosening (18 patients), infection (3 patients). Of these 21 APC revisions, two patients failed (after 60, 156 months). The 5 and 10 year survival rates were 83.5% (95% CI, 79–100%, number at risk 12 and 6 accordingly). In addition, two patients had non-union at the host-allograft bone junction and were augmented with bone autograft and plate. These results suggest that failed APCs may be revised to a new APC with a predictable outcome.  相似文献   
63.

Objectives

Collegiality is considered to be any extra-role behaviour that is discretionary, not recognised by a formal reward system and that promotes the effective functioning of the organisation. Although there is much literature on the concept of collegiality, there are few studies examining collegiality in the medical profession and none looking at collegiality among emergency physicians (EPs). The aim of the present study is to explore the perceptions of different ED healthcare professionals on the meaning of collegiality among EPs, the benefits of collegiality and behaviours they identify as indicative of collegiality.

Methods

This was a qualitative study using grounded theory. Data collection was via focus group interviews of three to four participants per group. Participants included EPs, emergency medicine trainees, senior emergency nurses and nurse practitioners. Three questions were explored: ‘what does collegiality mean to you?’; ‘what are the benefits of collegiality?’; and ‘what specific behaviours do you see as part of collegiality?’

Results

Ten focus group interviews involving a total of 33 participants were conducted. Several themes were identified for both the meaning of collegiality and the benefits of collegiality among EPs. Eight themes regarding collegial behaviour were identified: (i) mutual respect and trust; (ii) mutual support; (iii) attitude; (iv) work ethic; (v) staff welfare; (vi) patient management; (vii) handover; and (viii) education.

Conclusion

The present study identified distinct themes and behaviours indicative of collegiality among EPs. Promoting these behaviours could improve staff well-being, ED efficiency, patient safety and productivity.  相似文献   
64.

Background

Gaps in breast cancer (BC) surgical care have been identified. We have completed a surgeon-directed, iterative project to improve the quality of BC surgery in South-Central Ontario.

Methods

Surgeons performing BC surgery in a single Ontario health region were invited to participate. Interventions included: audit and feedback (A&F) of surgeon-selected quality indicators (QIs), workshops, and tailoring interviews. Workshops and A&F occurred yearly from 2005–2012. QIs included: preoperative imaging; preoperative core biopsy; positive margin rates; specimen orientation labeling; intraoperative specimen radiography of nonpalpable lesions; T1/T2 mastectomy rates; reoperation for positive margins; sentinel lymph node biopsy (SLNB) rates, number of sentinel lymph nodes; and days to receive pathology report. Semistructured tailoring interviews were conducted to identify facilitators and barriers to improved quality. All results were disseminated to all surgeons performing breast surgery in the study region.

Results

Over 6 time periods, 1,828 BC charts were reviewed from 12 hospitals (8 community and 4 academic). Twenty-two to 40 participants attended each workshop. Sustained improvement in rates of positive margins, preoperative core biopsies, specimen orientation labeling, and SLNB were seen. Mastectomy rates and overall axillary staging rates did not change, whereas time to receive pathology report increased. The tailoring interviews concerning positive margins, SLNB, and reoperation for positive margins identified facilitators and barriers relevant to surgeons.

Conclusions

This surgeon-directed, regional project resulted in meaningful improvement in numerous QIs. There was consistent and sustained participation by surgeons, highlighting the importance of integrating the clinicians in a long-term, iterative quality improvement strategy in BC surgery.  相似文献   
65.
66.
Increased efforts in comparative effectiveness research (CER) (comparing various health care intervention and treatment options) are being used to inform health care delivery. While CER research itself is an important step in developing best practices in health care, it is not enough to ensure success. The knowledge must also be successfully disseminated to increase adoption and implementation of practices. To ensure the greatest benefits of successful interventions, it is essential to understand which dissemination strategies are effective and under what conditions. This article provides the background and methodology used in a large-scale, 2-year study aimed at determining how knowledge gained from CER research may be most effectively disseminated to those responsible for delivering behavioral health services. The study takes an important step toward addressing the gaps in dissemination and translation of CER.  相似文献   
67.
68.
69.
70.
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