全文获取类型
收费全文 | 40695篇 |
免费 | 6841篇 |
国内免费 | 104篇 |
专业分类
耳鼻咽喉 | 288篇 |
儿科学 | 1143篇 |
妇产科学 | 2112篇 |
基础医学 | 2961篇 |
口腔科学 | 505篇 |
临床医学 | 17708篇 |
内科学 | 6364篇 |
皮肤病学 | 346篇 |
神经病学 | 2381篇 |
特种医学 | 1057篇 |
外国民族医学 | 1篇 |
外科学 | 3828篇 |
综合类 | 557篇 |
一般理论 | 11篇 |
预防医学 | 3943篇 |
眼科学 | 874篇 |
药学 | 1546篇 |
中国医学 | 20篇 |
肿瘤学 | 1995篇 |
出版年
2023年 | 873篇 |
2022年 | 223篇 |
2021年 | 602篇 |
2020年 | 814篇 |
2019年 | 577篇 |
2018年 | 1505篇 |
2017年 | 1651篇 |
2016年 | 1731篇 |
2015年 | 1892篇 |
2014年 | 2054篇 |
2013年 | 2522篇 |
2012年 | 1595篇 |
2011年 | 1883篇 |
2010年 | 1699篇 |
2009年 | 1972篇 |
2008年 | 1755篇 |
2007年 | 1722篇 |
2006年 | 1684篇 |
2005年 | 1502篇 |
2004年 | 1480篇 |
2003年 | 1359篇 |
2002年 | 1272篇 |
2001年 | 1010篇 |
2000年 | 841篇 |
1999年 | 920篇 |
1998年 | 806篇 |
1997年 | 912篇 |
1996年 | 821篇 |
1995年 | 768篇 |
1994年 | 596篇 |
1993年 | 521篇 |
1992年 | 648篇 |
1991年 | 651篇 |
1990年 | 623篇 |
1989年 | 560篇 |
1988年 | 464篇 |
1987年 | 448篇 |
1986年 | 447篇 |
1985年 | 452篇 |
1984年 | 342篇 |
1983年 | 290篇 |
1982年 | 235篇 |
1981年 | 222篇 |
1980年 | 185篇 |
1979年 | 257篇 |
1978年 | 200篇 |
1977年 | 204篇 |
1976年 | 181篇 |
1974年 | 165篇 |
1972年 | 190篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
Raymond J. Chan RN PhD Vivienne E. Milch MBBS MHPol Fiona Crawford-Williams PhD Oluwaseyifunmi Andi Agbejule BRadTherapy Ria Joseph MNutrDiet Jolyn Johal BND Narayanee Dick BSc Matthew P. Wallen PhD Julie Ratcliffe PhD Anupriya Agarwal MBBS Larissa Nekhlyudov MD Matthew Tieu PhD Manaf Al-Momani BPharm Scott Turnbull PhD Rahul Sathiaraj MPH Dorothy Keefe MBBS MD Nicolas H. Hart PhD 《CA: a cancer journal for clinicians》2023,73(6):565-589
Patient navigation is a strategy for overcoming barriers to reduce disparities and to improve access and outcomes. The aim of this umbrella review was to identify, critically appraise, synthesize, and present the best available evidence to inform policy and planning regarding patient navigation across the cancer continuum. Systematic reviews examining navigation in cancer care were identified in the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, Embase, Cumulative Index of Nursing and Allied Health (CINAHL), Epistemonikos, and Prospective Register of Systematic Reviews (PROSPERO) databases and in the gray literature from January 1, 2012, to April 19, 2022. Data were screened, extracted, and appraised independently by two authors. The JBI Critical Appraisal Checklist for Systematic Review and Research Syntheses was used for quality appraisal. Emerging literature up to May 25, 2022, was also explored to capture primary research published beyond the coverage of included systematic reviews. Of the 2062 unique records identified, 61 systematic reviews were included. Fifty-four reviews were quantitative or mixed-methods reviews, reporting on the effectiveness of cancer patient navigation, including 12 reviews reporting costs or cost-effectiveness outcomes. Seven qualitative reviews explored navigation needs, barriers, and experiences. In addition, 53 primary studies published since 2021 were included. Patient navigation is effective in improving participation in cancer screening and reducing the time from screening to diagnosis and from diagnosis to treatment initiation. Emerging evidence suggests that patient navigation improves quality of life and patient satisfaction with care in the survivorship phase and reduces hospital readmission in the active treatment and survivorship care phases. Palliative care data were extremely limited. Economic evaluations from the United States suggest the potential cost-effectiveness of navigation in screening programs. 相似文献
2.
3.
Alexandra Elliott Laura Schoenlaub Danielle Freches William Mitchell Guoquan Zhang 《Infection and immunity》2015,83(8):3104-3113
Coxiella burnetii is an obligate intracellular Gram-negative bacterium that causes the zoonotic disease Q fever. Although Q fever is mainly transmitted by aerosol infection, study of the immune responses in the lung following pulmonary C. burnetii infection is lacking. Neutrophils are considered the first immune cell to migrate into the lung and play an important role in host defense against aerosol infection with microbial pathogens. However, the role of neutrophils in the host defense against C. burnetii infection remains unclear. To determine the role of neutrophils in protective immunity against C. burnetii infection, the RB6-8C5 antibody was used to deplete neutrophils in mice before intranasal infection with C. burnetii. The results indicated that neutrophil-depleted mice developed more severe disease than their wild-type counterparts, suggesting that neutrophils play an important role in host defense against C. burnetii pulmonary infection. We also found that neither CXC chemokine receptor 2 (CXCR2) nor interleukin-17 (IL-17) receptor (IL-17R) deficiency changed the severity of disease following intranasal C. burnetii challenge, suggesting that keratinocyte-derived chemokine and IL-17 may not play essential roles in the response to C. burnetii infection. However, significantly higher C. burnetii genome copy numbers were detected in the lungs of IL-1R−/− mice at 14 days postinfection. This indicates that IL-1 may be important for the clearance of C. burnetii from the lungs following intranasal infection. Our results also suggest that neutrophils are involved in protecting vaccinated mice from C. burnetii challenge-induced disease. This is the first study to demonstrate an important role for neutrophils in protective immunity against C. burnetii infection. 相似文献
4.
Well‐being,health and fitness of children who use wheelchairs: Feasibility study protocol to develop child‐centred ‘keep‐fit’ exercise interventions
下载免费PDF全文
![点击此处可从《Journal of advanced nursing》网站下载免费的PDF全文](/ch/ext_images/free.gif)
5.
Interprofessional collaboration and communication in nursing homes: a qualitative exploration of problems in medical care for nursing home residents – study protocol
下载免费PDF全文
![点击此处可从《Journal of advanced nursing》网站下载免费的PDF全文](/ch/ext_images/free.gif)
6.
Quality of life in stroke survivor–caregiver dyads: a new conceptual framework and longitudinal study protocol
下载免费PDF全文
![点击此处可从《Journal of advanced nursing》网站下载免费的PDF全文](/ch/ext_images/free.gif)
7.
8.
9.
Nurse perceptions of the Nursing Delirium Screening Scale in two palliative care inpatient units: a focus group study
下载免费PDF全文
![点击此处可从《Journal of clinical nursing》网站下载免费的PDF全文](/ch/ext_images/free.gif)
10.
Chie Teramoto PHN RN MS Satoko Nagata PhD PHN RN Reiko Okamoto PhD PHN RN Ruriko Suzuki PHN RN MS Emiko Kishi PhD PHN RN Michie Nomura DSN PHN RN Noriko Jojima PHN RN MS Masumi Nishida PhD PHN RN Keiko Koide PhD PHN RN Emiko Kusano PhD PHN RN Saori Iwamoto PhD PHN RN Sachiyo Murashima PhD PHN RN 《Public health nursing (Boston, Mass.)》2015,32(6):654-661