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   2335篇
  免费   268篇
  国内免费   6篇
耳鼻咽喉   16篇
儿科学   73篇
妇产科学   28篇
基础医学   271篇
口腔科学   139篇
临床医学   321篇
内科学   396篇
皮肤病学   115篇
神经病学   179篇
特种医学   80篇
外科学   253篇
综合类   71篇
一般理论   4篇
预防医学   211篇
眼科学   7篇
药学   211篇
中国医学   2篇
肿瘤学   232篇
  2022年   18篇
  2021年   26篇
  2020年   25篇
  2019年   36篇
  2018年   31篇
  2017年   42篇
  2016年   30篇
  2015年   30篇
  2014年   44篇
  2013年   91篇
  2012年   97篇
  2011年   121篇
  2010年   57篇
  2009年   63篇
  2008年   94篇
  2007年   92篇
  2006年   106篇
  2005年   97篇
  2004年   108篇
  2003年   74篇
  2002年   80篇
  2001年   68篇
  2000年   59篇
  1999年   69篇
  1998年   32篇
  1997年   28篇
  1996年   32篇
  1995年   18篇
  1993年   22篇
  1992年   75篇
  1991年   78篇
  1990年   67篇
  1989年   60篇
  1988年   48篇
  1987年   42篇
  1986年   46篇
  1985年   44篇
  1984年   38篇
  1983年   31篇
  1982年   30篇
  1981年   28篇
  1979年   48篇
  1978年   22篇
  1977年   23篇
  1975年   22篇
  1974年   20篇
  1973年   18篇
  1971年   20篇
  1970年   25篇
  1968年   17篇
排序方式: 共有2609条查询结果,搜索用时 15 毫秒
991.
Snapping hip syndromes have been treated with open surgery for many years. Recently, endoscopic techniques have been developed for treatment of snapping hip syndromes with results that are at least comparable if not better than those reported for open procedures. The greater trochanteric pain syndrome is well known by orthopedic surgeons. However, deep understanding of the pathologic conditions generating pain in the greater trochanteric region and endoscopic access to it has only recently been described. Although evidence regarding endoscopic techniques for the treatment of the greater trochanteric pain syndrome is mainly anecdotal, early published reports are encouraging.  相似文献   
992.
PURPOSE: The aim of the research was to investigate swearing and verbal aggression in Australian inpatient settings, including incidence, gender, patient motivation, and nursing interventions. DESIGN AND METHODS: A mixed methods approach utilizing the Overt Aggression Scale and a survey of 107 nurses' perceptions of their experience of swearing was used. FINDINGS: High levels of swearing and verbal aggression were found, with differing patterns for male and female patients. Nurses subjected to swearing experienced high levels of distress, especially females. All nurses appeared to use a limited range of interventions to deal with patient aggression. PRACTICAL IMPLICATIONS: In order to provide optimal care for patients, there is a clear need to improve nurses' ability to predict and prevent aggression.  相似文献   
993.
994.
Proteolytic cleavage of tau at glutamic acid 391 (E391) is linked to the pathogenesis of Alzheimer disease (AD). This C-terminal-truncated tau species exists in neurofibrillary tangles and abnormal neurites in the brains of AD patients and may potentiate tau polymerization. We generated a mouse model that expresses human tau truncated at E391 to begin to elucidate the role of this C-terminal-truncated tau species in the development of tau pathology. Our results show that truncated but otherwise wild-type human tau is sufficient to drive pretangle pathologic changes in tau, including accumulation of insoluble tau, somatodendritic redistribution, formation of pathologic conformations, and dual phosphorylation of tau at sites associated with AD pathology. In addition, these mice exhibit atypical neuritic tau immunoreactivity, including abnormal neuritic processes and dystrophic neurites. These results suggest that changes in tau proteolysis can initiate tauopathy.  相似文献   
995.

Background  

Regional lymph node dissection (RLND) is currently the most effective therapy for metastatic melanoma in groin lymph nodes. With thorough surgery, RLND lymph node (LN) retrieval numbers have a predictable distribution. Whether patients have inguinal or ilioinguinal dissection varies between institutions. This study was designed to provide LN retrieval parameters for inguinal and ilioinguinal LN dissections, and secondarily, to analyze known predictors for survival outcomes, including LN ratio, i.e., involved/total number LN removed.  相似文献   
996.
Autoimmune neuromuscular disorders in childhood include Guillain-Barré syndrome and its variants, chronic inflammatory demyelinating polyradiculoneuropathy (CIDP), juvenile myasthenia gravis (JMG), and juvenile dermatomyositis (JDM), along with other disorders rarely seen in childhood. In general, these diseases have not been studied as extensively as they have been in adults. Thus, treatment protocols for these diseases in pediatrics are often based on adult practice, but despite the similarities in disease processes, the most widely used treatments have different effects in children. For example, some of the side effects of chronic steroid use, including linear growth deceleration, bone demineralization, and chronic weight issues, are more consequential in children than in adults. Although steroids remain a cornerstone of therapy in JDM and are useful in many cases of CIDP and JMG, other immunomodulatory therapies with similar efficacy may be used more frequently in some children to avoid these long-term sequelae. Steroids are less expensive than most other therapies, but chronic steroid therapy in childhood may lead to significant and costly medical complications. Another example is plasma exchange. This treatment modality presents challenges in pediatrics, as younger children require central venous access for this therapy. However, in older children and adolescents, plasma exchange is often feasible via peripheral venous access, making this treatment more accessible than might be expected in this age group. Intravenous immunoglobulin also is beneficial in several of these disorders, but its high cost may present barriers to its use in the future. Newer steroid-sparing immunomodulatory agents, such as azathioprine, tacrolimus, mycophenolate mofetil, and rituximab, have not been studied extensively in children. They show promising results from case reports and retrospective cohort studies, but there is a need for comparative studies looking at their relative efficacy, tolerability, and long-term adverse effects (including secondary malignancy) in children.  相似文献   
997.
998.
999.
jeong s.y.‐s., higgins i. & mcmillan m. (2011 ) Experiences with advance care planning: nurses’ perspective. International Journal of Older People Nursing  6 , 165–175 doi: 10.1111/j.1748‐3743.2009.00200.x Aims and objectives. The aim of this paper is to report the findings of a case study that explored the phenomenon of advanced care planning and advance care directives in residential care settings in Australia. In particular, this paper focuses on the experiences of Registered Nurses with advanced care planning and advance care directives. Background. Nurses need to know how to engage with residents and families when they invest time and effort on advanced care planning and documentation of advance care directives. Methods. A case‐study design involving participant observation, field note recording, semi structured interviews and document analysis was used. Data were collected over 7 months. Data analysis involved thematic content analysis. Findings. The factors that enhanced and inhibited the experiences of the Registered Nurses with advanced care planning were identified. The enhancing factors include; ‘it is their essence of who they are’, and ‘back‐up from family members and other nursing staff’. The inhibiting factors are ‘lack of time’, ‘a culture of do everything and don’t go there’, and ‘lack of family involvement’. Conclusion. The findings of the current study provided nurses with evidence of the positive nature of experiences of older people, family members, and nurses themselves with advanced care planning in an attempt to better implement and practise advanced care planning.  相似文献   
1000.

Objective

To investigate the relationship between numeracy and the accuracy of side effect risk estimation following the presentation of information about a medicine via the Cancer Research UK (CR-UK) patient information website.

Methods

591 website users were presented with information in different formats about the risks of side effects from taking tamoxifen. Participants estimated the risk of each side effect, provided other subjective ratings about the information and completed a numeracy task.

Results

Regardless of presentation format, numeracy was correlated with the accuracy of three side effect risk estimates. People with cancer and tamoxifen users showed stronger correlations for all side effect estimates. In addition, numeracy was positively related to the perceived influence of the information on the decision to take the medicine and was negatively related to ratings of satisfaction with the information.

Conclusion

People with a lower numeracy level make larger errors in interpreting medicines side effect risk information.

Practice implications

Pharmacists, other health professionals and patient information websites should ensure they provide clear explanations of risk, particularly to people with low numeracy, and assess their understanding of those explanations. Future research into risk communication should take account of numeracy level, to investigate the impact of different formats.  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