全文获取类型
收费全文 | 7420篇 |
免费 | 411篇 |
国内免费 | 8篇 |
专业分类
耳鼻咽喉 | 54篇 |
儿科学 | 279篇 |
妇产科学 | 229篇 |
基础医学 | 768篇 |
口腔科学 | 24篇 |
临床医学 | 1098篇 |
内科学 | 1252篇 |
皮肤病学 | 116篇 |
神经病学 | 710篇 |
特种医学 | 171篇 |
外科学 | 864篇 |
综合类 | 77篇 |
一般理论 | 20篇 |
预防医学 | 996篇 |
眼科学 | 161篇 |
药学 | 389篇 |
中国医学 | 4篇 |
肿瘤学 | 627篇 |
出版年
2023年 | 32篇 |
2022年 | 57篇 |
2021年 | 158篇 |
2020年 | 86篇 |
2019年 | 182篇 |
2018年 | 215篇 |
2017年 | 156篇 |
2016年 | 157篇 |
2015年 | 136篇 |
2014年 | 233篇 |
2013年 | 390篇 |
2012年 | 586篇 |
2011年 | 624篇 |
2010年 | 345篇 |
2009年 | 302篇 |
2008年 | 509篇 |
2007年 | 550篇 |
2006年 | 530篇 |
2005年 | 528篇 |
2004年 | 473篇 |
2003年 | 464篇 |
2002年 | 435篇 |
2001年 | 66篇 |
2000年 | 54篇 |
1999年 | 70篇 |
1998年 | 64篇 |
1997年 | 52篇 |
1996年 | 40篇 |
1995年 | 44篇 |
1994年 | 29篇 |
1993年 | 32篇 |
1992年 | 34篇 |
1991年 | 27篇 |
1990年 | 18篇 |
1989年 | 11篇 |
1988年 | 26篇 |
1987年 | 19篇 |
1986年 | 18篇 |
1985年 | 7篇 |
1984年 | 8篇 |
1983年 | 13篇 |
1982年 | 8篇 |
1981年 | 6篇 |
1978年 | 3篇 |
1977年 | 4篇 |
1975年 | 5篇 |
1974年 | 4篇 |
1970年 | 4篇 |
1969年 | 3篇 |
1968年 | 5篇 |
排序方式: 共有7839条查询结果,搜索用时 578 毫秒
11.
Toward a VA women’s health research agenda: Setting evidence-based priorities to improve the health and health care of women veterans
下载免费PDF全文
![点击此处可从《Journal of general internal medicine》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Elizabeth M. Yano Lori A. Bastian Susan M. Frayne Alexandra L. Howell Linda R. Lipson Geraldine McGlynn Paula P. Schnurr Margaret R. Seaver Ann M. Spungen Stephan D. Fihn 《Journal of general internal medicine》2006,21(3):S93-S101
The expansion of women in the military is reshaping the veteran population, with women now constituting the fastest growing segment of eligible VA health care users. In recognition of the changing demographics and special health care needs of women, the VA Office of Research & Development recently sponsored the first national VA Women’s Health Research Agenda-setting conference to map research priorities to the needs of women veterans and position VA as a national leader in Women’s Health Research. This paper summarizes the process and outcomes of this effort, outlining VA’s research priorities for biomedical, clinical, rehabilitation, and health services research. 相似文献
12.
13.
Paul J Drinka Peggy Krause Lori Nest Brian M Goodman Stefan Gravenstein 《Infection control and hospital epidemiology》2003,24(11):872-874
Influenza A was cultured in 62 double rooms. The roommate was infected in 12 (19.4%). During 3,294 resident-seasons, influenza was cultured in 208 single rooms (6.3%). Those who lived in double rooms with a culture-positive roommate had a 3.07 relative risk (CI95, 1.61-5.78) of acquiring influenza. 相似文献
14.
15.
16.
Russell A. Barkley Mariellen Fischer Craig Edelbrock Lori Smallish 《Journal of child psychology and psychiatry, and allied disciplines》1991,32(2):233-255
The present study reports the results of a prospective, 8-year follow-up study of 100 hyperactive and 60 normal children followed from childhood into adolescence. Ratings of child behavior problems and family conflicts as well as direct observations of mother-child interactions were taken in childhood and again at adolescent follow-up. At outcome, hyperactives continued to have more conduct and learning problems and to be more hyperactive, inattentive, and impulsive than controls. Hyperactives were also rated by their mothers as having more numerous and intense family conflicts than the normal controls, although the adolescents in both groups did not differ in their own ratings of these conflicts. Observations of mother-adolescent interactions at outcome found the hyperactive dyads displaying more negative and controlling behaviors and less positive and facilitating behaviors towards each other than in the normal dyads. These interaction patterns were significantly related to similar patterns in mother-child interactions observed 8 years earlier. Mothers of hyperactives also reported more personal psychological distress than normal mothers at outcome. Further analyses of subgroups of hyperactives at outcome, formed on the presence or absence of ADHD and oppositional defiant disorder (ODD), indicated that the presence of ODD accounted for most of the differences between hyperactives and normals on the interaction measures, ratings of home conflicts, and ratings of maternal psychological distress. Results suggest that the development and maintenance of ODD into adolescence in hyperactive children is strongly associated with aggression and negative parent-child interactions in childhood. 相似文献
17.
18.
19.
Frank V Schraml Lori L Beason-Held Douglas W Fletcher Brian P Brown 《Journal of cerebral blood flow and metabolism》2006,26(3):321-329
Thyroid dysfunction is a well-known contributor to psychiatric morbidity. To investigate the mechanism(s) by which thyroid hormone availability affects cerebral activity, a group of thyroidectomized individuals were studied at two points in time: when markedly hypothyroid in preparation for a thyroid cancer metastatic survey and when clinically and/or biochemically euthyroid. The analysis consisted of single photon emission computed tomography (SPECT) using a lipophilic radiopharmaceutical, technetium-99m (Tc-99m) ethyl cysteinate dimer (ECD), and measurement of mood, anxiety, and psychomotor function, at both points in time. Both increases and decreases in regional cerebral radiotracer activity were found in the hypothyroid condition relative to the euthyroid condition, and the neuropsychological assessment demonstrated significantly greater depression, anxiety, and psychomotor slowing during the hypothyroid state. Increased radiotracer activity was seen in frontal and temporal regions, posterior cingulate gyrus, thalamus, and putamen. Decreased activity was seen in the occipital cortex, and the pre- and postcentral gyri. This distribution pattern is partially consistent with findings in persons with depression and anxiety unrelated to thyroid disease, supporting the link between the symptoms observed in our subjects and their marked hypothyroidism. Finally, these results support the need to consider the effect of the thyroid state on cellular mechanisms of uptake and retention of cerebral blood flow radiopharmaceuticals when studying 'noneuthyroid' individuals. 相似文献
20.
Parminder Suchdev Kym Ahrens Eleanor Click Lori Macklin Doris Evangelista Elinor Graham 《Ambulatory Pediatrics》2007,7(4):317-320
The health status of many people in developing countries is often dismal compared with the norms in industrialized countries. Increasingly, medical practitioners in the United States and other industrialized countries have become interested in global health issues, an interest that often takes the form of short-term international medical trips. We discuss several ethical issues associated with participation in such trips and use our experiences in developing the Children's Health International Medical Project of Seattle (CHIMPS) to outline and illustrate a set of 7 guiding principles for making these trips. CHIMPS is a resident-run, faculty-supported international medical program founded in 2002 by pediatric residents at the University of Washington in Seattle. Members of CHIMPS work with a rural community in El Salvador to support ongoing public health interventions there and provide sustainable medical care in collaboration with the community and a local nongovernmental organization. The 7 principles developed as a result of this work-mission, collaboration, education, service, teamwork, sustainability, and evaluation-can be used as a model for health practitioners as they develop or select international medical trips. The importance of partnering with the community and working within the existing medical and public health infrastructure is emphasized. Many of the challenges of doing international medical work can be overcome when efforts are guided by a few specific principles, such as those we have outlined. 相似文献