全文获取类型
收费全文 | 2571篇 |
免费 | 234篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 31篇 |
儿科学 | 84篇 |
妇产科学 | 105篇 |
基础医学 | 283篇 |
口腔科学 | 98篇 |
临床医学 | 354篇 |
内科学 | 381篇 |
皮肤病学 | 57篇 |
神经病学 | 229篇 |
特种医学 | 72篇 |
外科学 | 382篇 |
综合类 | 138篇 |
一般理论 | 4篇 |
预防医学 | 311篇 |
眼科学 | 21篇 |
药学 | 167篇 |
中国医学 | 1篇 |
肿瘤学 | 89篇 |
出版年
2021年 | 43篇 |
2019年 | 53篇 |
2018年 | 56篇 |
2017年 | 46篇 |
2016年 | 45篇 |
2015年 | 42篇 |
2014年 | 67篇 |
2013年 | 56篇 |
2012年 | 108篇 |
2011年 | 114篇 |
2010年 | 94篇 |
2009年 | 72篇 |
2008年 | 79篇 |
2007年 | 76篇 |
2006年 | 114篇 |
2005年 | 106篇 |
2004年 | 95篇 |
2003年 | 105篇 |
2002年 | 85篇 |
2001年 | 72篇 |
2000年 | 74篇 |
1999年 | 65篇 |
1998年 | 23篇 |
1997年 | 33篇 |
1996年 | 29篇 |
1995年 | 21篇 |
1994年 | 23篇 |
1992年 | 43篇 |
1991年 | 48篇 |
1990年 | 47篇 |
1989年 | 32篇 |
1988年 | 45篇 |
1987年 | 45篇 |
1986年 | 45篇 |
1985年 | 47篇 |
1984年 | 31篇 |
1983年 | 27篇 |
1982年 | 23篇 |
1979年 | 28篇 |
1978年 | 27篇 |
1977年 | 19篇 |
1976年 | 23篇 |
1974年 | 26篇 |
1973年 | 20篇 |
1972年 | 20篇 |
1971年 | 19篇 |
1970年 | 19篇 |
1969年 | 26篇 |
1968年 | 24篇 |
1966年 | 30篇 |
排序方式: 共有2807条查询结果,搜索用时 15 毫秒
51.
Lucas G Win N Calvert A Green A Griffin E Bendukidze N Hopkins M Browne T Poles A Chapman C Massey E 《Vox sanguinis》2012,103(1):10-17
Background and Objectives Transfusion‐related acute lung injury (TRALI) is associated with the passive transfusion of leucocyte antibodies in blood products. Blood Transfusion Services have adopted a number of different strategies for reducing the incidence of TRALI, but, while these have been successful, TRALI has not been completely eliminated. Many Transfusion Services have introduced leucocyte antibody screening of donors to further reduce TRALI. This report describes the results of donor leucocyte antibody screening within NHS Blood and Transplant and the guidelines that have been developed for Transfusion Services within the United Kingdom (UK) to reduce the incidence of TRALI. Materials and Methods Blood samples from newly recruited female apheresis donors were tested for human leucocyte antigens (HLA) class I and class II antibodies and granulocyte‐specific antibodies. Results A total of 1157 female donors were evaluated. Three hundred and fifteen (27·23%) donors had HLA class I or II antibodies and were returned to red cell component donation. Fifty‐seven (6·77%) of the remaining 842 donors were found to have granulocyte‐specific antibodies of which 11 (1·31%) had HNA‐specific antibodies. A total of 818 donors (70·70%) were accepted for platelet apheresis, 336 donors (29·04%) were returned to red cell component donation, and three donors with HNA‐3a antibodies (0·26%) were deferred from therapeutic donation. Conclusions Female donors with leucocyte antibodies were identified in a stratified screening programme. Donors with antibodies were either directed to red cell donation or deferred. This process, combined with other measures that have already been introduced, is anticipated to further reduce the incidence of TRALI. 相似文献
52.
53.
54.
55.
Ebele M. Umeukeje Joseph R. Merighi Teri Browne Marcus Wild Hafez Alsmaan Kausik Umanath Julia B. Lewis Kenneth A. Wallston Kerri L. Cavanaugh 《Journal of behavioral medicine》2016,39(6):1104-1114
This study was designed to assess dialysis subjects’ perceived autonomy support association with phosphate binder medication adherence, race and gender. A multi-site cross-sectional study was conducted among 377 dialysis subjects. The Health Care Climate (HCC) Questionnaire assessed subjects’ perception of their providers’ autonomy support for phosphate binder use, and adherence was assessed by the self-reported Morisky Medication Adherence Scale. Serum phosphorus was obtained from the medical record. Regression models were used to examine independent factors of medication adherence, serum phosphorus, and differences by race and gender. Non-white HCC scores were consistently lower compared with white subjects’ scores. No differences were observed by gender. Reported phosphate binder adherence was associated with HCC score, and also with phosphorus control. No significant association was found between HCC score and serum phosphorus. Autonomy support, especially in non-white end stage renal disease subjects, may be an appropriate target for culturally informed strategies to optimize mineral bone health. 相似文献
56.
57.
Kieran A. Walsh Carol Sinnott Aoife Fleming Jenny Mc Sharry Stephen Byrne John Browne Suzanne Timmons 《Journal of the American Medical Directors Association》2018,19(11):948-958.e12
Objectives
Caution is advised when prescribing antipsychotics to people with dementia. This study explored the determinants of appropriate, evidence-based antipsychotic prescribing behaviors for nursing home residents with dementia, with a view to informing future quality improvement efforts and behavior change interventions.Design
Semistructured qualitative interviews based on the Theoretical Domains Framework (TDF).Setting and Participants
A purposive sample of 27 participants from 4 nursing homes, involved in the care of nursing home residents with dementia (8 nurses, 5 general practitioners, 5 healthcare assistants, 3 family members, 2 pharmacists, 2 consultant geriatricians, and 2 consultant psychiatrists of old age) in a Southern region of Ireland.Measures
Using framework analysis, the predominant TDF domains and determinants influencing these behaviors were identified, and explanatory themes developed.Results
Nine predominant TDF domains were identified as influencing appropriate antipsychotic prescribing behaviors. Participants’ effort to achieve “a fine balance” between the risks and benefits of antipsychotics was identified as the cross-cutting theme that underpinned many of the behavioral determinants. On one hand, neither healthcare workers nor family members wanted to see residents over-sedated and without a quality of life. Conversely, the reality of needing to protect staff, family members, and residents from potentially dangerous behavioral symptoms, in a resource-poor environment, was emphasized. The implementation of best-practice guidelines was illustrated through 3 explanatory themes (“human suffering”; “the interface between resident and nursing home”; and “power and knowledge: complex stakeholder dynamics”), which conceptualize how different nursing homes strike this “fine balance.”Conclusions
Implementing evidence-based antipsychotic prescribing practices for nursing home residents with dementia remains a significant challenge. Greater policy and institutional support is required to help stakeholders strike that “fine balance” and ultimately make better prescribing decisions. This study has generated a deeper understanding of this complex issue and will inform the development of an evidence-based intervention. 相似文献58.
Nerve conduits and acellular nerve allograft offer efficient and convenient tools for overcoming unexpected gaps during nerve repair. Both techniques offer guidance for migrating Schwann cells and axonal regeneration though utilizing very different scaffolds. The substantially greater amount of animal and clinical data published on nerve conduits is marked by wide discrepancies in results that may be partly explained by a still poorly defined critical repair gap and diameter size. The available information on acellular allografts appears more consistently positive though this tool is also hampered by a longer but also limited critical length. This article reviews the current relative literature and examines pertinent parameters for application of both acellular allograft and nerve conduits in overcoming short nerve gaps. 相似文献
59.
60.