全文获取类型
收费全文 | 46753篇 |
免费 | 3499篇 |
国内免费 | 190篇 |
专业分类
耳鼻咽喉 | 375篇 |
儿科学 | 1513篇 |
妇产科学 | 1204篇 |
基础医学 | 6601篇 |
口腔科学 | 614篇 |
临床医学 | 5043篇 |
内科学 | 9765篇 |
皮肤病学 | 882篇 |
神经病学 | 5564篇 |
特种医学 | 1122篇 |
外科学 | 4209篇 |
综合类 | 382篇 |
一般理论 | 59篇 |
预防医学 | 5673篇 |
眼科学 | 617篇 |
药学 | 2984篇 |
中国医学 | 86篇 |
肿瘤学 | 3749篇 |
出版年
2024年 | 59篇 |
2023年 | 651篇 |
2022年 | 1087篇 |
2021年 | 2143篇 |
2020年 | 1300篇 |
2019年 | 1774篇 |
2018年 | 2037篇 |
2017年 | 1366篇 |
2016年 | 1516篇 |
2015年 | 1667篇 |
2014年 | 2030篇 |
2013年 | 2628篇 |
2012年 | 4206篇 |
2011年 | 4156篇 |
2010年 | 2108篇 |
2009年 | 1856篇 |
2008年 | 2955篇 |
2007年 | 2919篇 |
2006年 | 2795篇 |
2005年 | 2575篇 |
2004年 | 2294篇 |
2003年 | 2043篇 |
2002年 | 1740篇 |
2001年 | 197篇 |
2000年 | 149篇 |
1999年 | 216篇 |
1998年 | 351篇 |
1997年 | 260篇 |
1996年 | 214篇 |
1995年 | 178篇 |
1994年 | 123篇 |
1993年 | 117篇 |
1992年 | 70篇 |
1991年 | 67篇 |
1990年 | 56篇 |
1989年 | 57篇 |
1988年 | 52篇 |
1987年 | 38篇 |
1986年 | 41篇 |
1985年 | 34篇 |
1984年 | 48篇 |
1983年 | 46篇 |
1982年 | 34篇 |
1981年 | 42篇 |
1980年 | 29篇 |
1979年 | 18篇 |
1978年 | 14篇 |
1977年 | 20篇 |
1975年 | 11篇 |
1973年 | 9篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
Olga A. Klein Avril Drummond Jacqueline R. Mhizha-Murira Laura Mansford Roshan dasNair 《Neuropsychological rehabilitation》2019,29(4):491-512
While previous randomised controlled trials and meta-analyses offer only limited evidence for the effectiveness of cognitive rehabilitation, qualitative studies examining patient perspectives report more positive outcomes. This meta-synthesis of qualitative studies examined patient perspectives of cognitive rehabilitation for memory, attention, and executive function problems in people with multiple sclerosis. Using set eligibility criteria, we screened electronic databases, reference lists, and academic networks for relevant papers. Seven papers (195 participants) were selected. Two independent researchers conducted quality appraisals of papers. Data analysis, guided by the thematic synthesis approach, yielded six main themes. These suggested that patients benefitted from the group environment in rehabilitation. Cognitive rehabilitation facilitated the participants’ reflection and awareness of their cognitive deficits, and was associated with increased knowledge and understanding of their illness. Increased strategy use was reported and associated with improvements in cognitive functioning and greater confidence and perseverance. Participants reported emotional and social improvements, and felt more optimistic. Overall, these changes had a positive impact on participants’ quality of life. This synthesis of qualitative studies indicates that people with multiple sclerosis who experience cognitive deficits benefit from cognitive rehabilitation programmes. This finding must, however, be viewed in light of the limitations of this meta-synthesis. The meta-synthesis was registered in the PROSPERO database under CRD42017040148. 相似文献
4.
A case of Rubinstein‐Taybi syndrome associated with growth hormone deficiency in childhood 下载免费PDF全文
5.
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
6.
7.
Recurrent Oral and Genital Ulcers in an Infant: Neonatal Presentation of Pediatric Behçet Disease 下载免费PDF全文
Emma F. Johnson M.D. Danielle M. Hawkins M.D. Laura K. Gifford M.D. Aimee C. Smidt M.D. 《Pediatric dermatology》2015,32(5):714-717
Behçet disease is a complex, multisystem disease characterized by recurrent oral and genital ulcerations. It rarely occurs in infants or children. Neonatal Behçet disease has been reported in infants whose ulcers resolve at or before 9 weeks of age. Few cases of neonatal Behçet disease persisting into childhood have previously been reported. We report the case of a 1‐month‐old infant who presented with severe recurrent genital ulcerations and at 6 months developed recurrent oral ulcerations. Her orogenital ulcerations continue to recur. Human leukocyte antigen testing revealed HLA‐B51 and B44 positivity. This is a case of pediatric Behçet disease in the neonatal period. Behçet disease should be considered in the differential diagnosis of recurrent genital and oral ulcerations in infants and children. 相似文献
8.
9.
Cost‐Effectiveness and Cost‐Utility Analysis of Spinal Cord Stimulation in Patients With Failed Back Surgery Syndrome: Results From the PRECISE Study 下载免费PDF全文
Furio Zucco MD Roberta Ciampichini MSc Angelo Lavano MD Amedeo Costantini MD Marisa De Rose MD Paolo Poli MD Gianpaolo Fortini MD Laura Demartini MD Enrico De Simone MD Valentino Menardo MD Piero Cisotto MD Mario Meglio MD Luciana Scalone PhD Lorenzo G. Mantovani DSc 《Neuromodulation》2015,18(4):266-276