全文获取类型
收费全文 | 612篇 |
免费 | 87篇 |
国内免费 | 3篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 77篇 |
妇产科学 | 14篇 |
基础医学 | 66篇 |
口腔科学 | 31篇 |
临床医学 | 112篇 |
内科学 | 161篇 |
皮肤病学 | 14篇 |
神经病学 | 25篇 |
特种医学 | 37篇 |
外科学 | 36篇 |
综合类 | 16篇 |
预防医学 | 44篇 |
眼科学 | 11篇 |
药学 | 21篇 |
肿瘤学 | 36篇 |
出版年
2024年 | 2篇 |
2023年 | 16篇 |
2022年 | 4篇 |
2021年 | 10篇 |
2020年 | 7篇 |
2019年 | 5篇 |
2018年 | 18篇 |
2017年 | 13篇 |
2016年 | 13篇 |
2015年 | 16篇 |
2014年 | 26篇 |
2013年 | 33篇 |
2012年 | 19篇 |
2011年 | 29篇 |
2010年 | 33篇 |
2009年 | 40篇 |
2008年 | 21篇 |
2007年 | 18篇 |
2006年 | 18篇 |
2005年 | 21篇 |
2004年 | 15篇 |
2003年 | 10篇 |
2002年 | 8篇 |
2001年 | 4篇 |
2000年 | 5篇 |
1999年 | 20篇 |
1998年 | 22篇 |
1997年 | 34篇 |
1996年 | 37篇 |
1995年 | 28篇 |
1994年 | 23篇 |
1993年 | 18篇 |
1992年 | 6篇 |
1991年 | 3篇 |
1990年 | 7篇 |
1989年 | 15篇 |
1988年 | 10篇 |
1987年 | 4篇 |
1986年 | 11篇 |
1985年 | 10篇 |
1984年 | 7篇 |
1983年 | 6篇 |
1982年 | 10篇 |
1981年 | 6篇 |
1980年 | 10篇 |
1978年 | 4篇 |
1977年 | 3篇 |
1976年 | 4篇 |
排序方式: 共有702条查询结果,搜索用时 13 毫秒
71.
72.
Private health insurance plays a key role in financing dental care in Australia. Having private dental insurance has been associated with higher levels of access to dental care, visiting for a check‐up and receiving a favourable pattern of services. Associations with better oral health have also been reported. In the absence of any existing review, this paper aims to systematically review the relationship between dental insurance and dental service use and/or oral health outcomes in Australia. A systematic search of online databases and subsequent sifting resulted in 36 publications, 33 of which were cross sectional and three cohort analyses. Dental service outcomes were more commonly reported than oral health outcomes. There was considerable heterogeneity in the outcome measures reported, for both service use and health outcomes. Overall, the majority of the evidence was from cross sectional studies and few studies reported analyses adjusted for confounding factors. The consolidated evidence points towards a positive association between dental insurance and dental visiting. Dentally insured adults are likely to have more regular access to dental care and have a more favourable pattern of service use than the uninsured. However, evidence of associations between dental insurance and oral health are mixed. 相似文献
73.
A monoclonal antibody-defined membrane antigen complex is required for neutrophil-neutrophil aggregation 总被引:7,自引:0,他引:7
We examined the aggregation responses of normal neutrophils treated with the murine monoclonal antibody (MoAb) 60.3. Addition of MoAb 60.3 to normal neutrophils produced dose-dependent inhibition of neutrophil aggregation in response to phorbol myristate acetate, zymosan-activated plasma, and N-formyl-methionylleucylphenylalanine. We conclude that the membrane glycoprotein complex recognized by MoAb 60.3--designated CDw18- -is required for neutrophil-neutrophil aggregation in vitro. 相似文献
74.
Foa R; Pelicci PG; Migone N; Lauria F; Pizzolo G; Flug F; Knowles DM d; Dalla- Favera R 《Blood》1986,67(1):247-250
We investigated the rearrangement patterns of the gene coding for the beta chain of the T cell receptor (T beta) in 11 patients with T-cell derived chronic lymphoproliferative disorders, including T-cell prolymphocytic leukemia (T-PLL) and T-cell chronic lymphocytic leukemia (T-CLL). We found that all five cases of T-PLL, and five of six cases of T-CLL, displayed T beta-gene rearrangements, clearly establishing their monoclonal nature. Clonality could not be determined in one case of T-CLL where the T beta gene was found unrearranged. Our results demonstrate that the majority of cases of both clinically aggressive T- PLL and clinically indolent T-CLL are monoclonal. These results suggest that the analysis of T beta gene rearrangements represents a valid tool for the differential diagnosis and clinical monitoring of T-cell derived chronic lymphoproliferative diseases. 相似文献
75.
S Sheflin-Findling R Arnon S Lee J Chu F Henderling N Kerkar K Iyer 《Journal of pediatric surgery》2012,47(7):1453-1456
This is a case report of the first patient with Alagille syndrome (AGS) to undergo a partial internal biliary diversion (PIBD) for the treatment of symptoms refractory to medical therapy. Alagille syndrome is a hereditary disease resulting in chronic cholestasis and hypercholesterolemia that can lead to severe and intractable pruritus and disfiguring and debilitating xanthomas. PIBD has proven to be an effective treatment option for other causes of cholestatic liver disease. This report reviews the immediate and 2-year follow-up of a patient after this surgical procedure. The results suggest that PIBD has potential to provide relief of intractable symptoms and improve the quality of life in patients with AGS while avoiding an external stoma. It does not, however, appear to prevent the progression of liver disease. Long-term follow-up is still needed. 相似文献
76.
77.
78.
The head nurse occupies an important position in the nursing unit Concerning leadership style, a distinction is traditionally made between consideration and initiating structure Sometimes a third style is distinguished as well, namely 'production-orientated' leadership In a study of 561 nurses from 16 general hospitals in The Netherlands, the influence of two leadership styles upon the reactions of nurses (job satisfaction, experienced meaningfulness, health complaints and absenteeism) to their work situations was examined, namely the styles of social (i e consideration) and instrumental leadership (a combination of the styles initiating structure and production-onentated) The separate effects of the two styles were studied, as well as the connection between combinations of leadership styles and reactions The results indicate that social leadership contributes positively to nurses' reactions to their job Instrumental leadership, on the other hand, leads to health complaints From the analyses of combinations of leadership styles it appears that nurses are most satisfied if the head nurse pays much attention to both dimensions of leadership For health complaints, a tendency in this directions is also found Finally, it becomes clear that nurses with a great need for autonomy prefer a different type of leadership from nurses with little need for autonomy 相似文献
79.
80.
Ultrasonically guided punctures. A modified technique 总被引:2,自引:0,他引:2