全文获取类型
收费全文 | 655篇 |
免费 | 53篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 22篇 |
妇产科学 | 10篇 |
基础医学 | 94篇 |
口腔科学 | 36篇 |
临床医学 | 71篇 |
内科学 | 111篇 |
皮肤病学 | 3篇 |
神经病学 | 49篇 |
特种医学 | 47篇 |
外科学 | 65篇 |
综合类 | 29篇 |
预防医学 | 37篇 |
眼科学 | 61篇 |
药学 | 40篇 |
中国医学 | 2篇 |
肿瘤学 | 31篇 |
出版年
2021年 | 15篇 |
2020年 | 11篇 |
2019年 | 13篇 |
2018年 | 19篇 |
2017年 | 9篇 |
2016年 | 9篇 |
2015年 | 16篇 |
2014年 | 17篇 |
2013年 | 20篇 |
2012年 | 22篇 |
2011年 | 26篇 |
2010年 | 18篇 |
2009年 | 17篇 |
2008年 | 20篇 |
2007年 | 20篇 |
2006年 | 18篇 |
2005年 | 16篇 |
2004年 | 12篇 |
2003年 | 15篇 |
2002年 | 18篇 |
2001年 | 18篇 |
2000年 | 13篇 |
1999年 | 11篇 |
1998年 | 22篇 |
1997年 | 22篇 |
1996年 | 17篇 |
1995年 | 17篇 |
1994年 | 15篇 |
1993年 | 8篇 |
1992年 | 11篇 |
1991年 | 10篇 |
1990年 | 10篇 |
1989年 | 14篇 |
1988年 | 18篇 |
1987年 | 21篇 |
1986年 | 22篇 |
1985年 | 13篇 |
1984年 | 12篇 |
1983年 | 5篇 |
1982年 | 6篇 |
1981年 | 6篇 |
1980年 | 10篇 |
1979年 | 11篇 |
1978年 | 5篇 |
1977年 | 9篇 |
1975年 | 6篇 |
1974年 | 8篇 |
1973年 | 11篇 |
1971年 | 8篇 |
1968年 | 4篇 |
排序方式: 共有710条查询结果,搜索用时 15 毫秒
1.
Elizabeth M. Broad Laura J. Newsome Dustin A. Dew 《The journal of spinal cord medicine》2020,43(3):388-397
Objective: Report measured resting energy expenditure (REE) in wheelchair rugby athletes and evaluate agreement between REE and the prediction models of Chun, Cunningham, Harris-Benedict, Mifflin, Nightingale and Gorgey, and Owen.Design: Cohort-based validation study.Setting. Paralympic team training camp.Participants: Fourteen internationally competitive athletes who play wheelchair rugby, 13 of whom had cervical spinal cord injuries (SCI).Outcome Measures: A portable metabolic analyzer was used to measure REE following an overnight fast and dual-energy X-ray absorptiometry (DXA) was used to assess lean body mass for the prediction equations.Results: REE in the current sample was 1735?±?257?kcal?×?day?1 ranging from 1324 to 2068?kcal?×?day?1. Bland–Altman analyses revealed negative mean bias but similar limits of agreement between measured REE and scores predicted by Chun, Cunningham, Mifflin, Nightingale and Gorgey, and Owen models in elite athletes who play wheelchair rugby.Conclusion: Prediction models regressed on persons with and without SCI under-predicted REE of competitive wheelchair rugby athletes. This outcome may be explained by the higher REE/fat-free mass (FFM) ratio of current athletes compared to less active samples. Findings from the current study will help practitioners to determine nutrient intake needs on training days of varied intensity. 相似文献
2.
Carol Shieh Michael T. Weaver Kathleen M. Hanna Kathleen Newsome Mulubrhan Mogos 《Journal of community health nursing》2015,32(4):199-211
This study examined the association of self-efficacy and self-regulation with nutrition and exercise behaviors. The study used a cross-sectional design and included 108 participants (54 men, 54 women). Nutrition behaviors (fruit/vegetable consumption, dinner cooking, and restaurant eating) and exercise were measured using total days in last week a behavior was reported. Instruments measuring self-efficacy and self-regulation demonstrated excellent Cronbach’s alphas (.93–.95). Path analysis indicated only fruit/vegetable consumption and exercise were associated with self-efficacy and self-regulation. Self-regulation showed direct association with fruit/vegetable consumption and exercise, but self-efficacy had direct association only with exercise. Self-efficacy and self-regulation should be strategically used to promote health behaviors. 相似文献
3.
4.
Newsome PR 《British dental journal》2011,210(1):25-29
For many years, dental technicians were largely self-regulated and left to work without any undue interference from, or legislation by, outside authorities. This situation has changed somewhat dramatically in recent years, primarily as a result of a) mandatory General Dental Council (GDC) registration of UK-based dental technicians and b) the requirement to comply with certain EC directives governing the provision of dental appliances. There seems to be some confusion, however, about these various changes and the ensuing ramifications for dental practitioners. The purpose of this paper is firstly to clarify the various regulatory issues currently surrounding technician registration and the provision of laboratory work ('Made in Britain' or otherwise) and secondly to explore the various internationally-recognised quality assurance standards that can be applied to the production of such work in order to assist dentists in gauging quality-related claims made by dental laboratories, both in the UK and overseas. 相似文献
5.
Valerie R. Newsome Collins O. Airhihenbuwa Shedra Amy Snipes 《Journal of the National Medical Association》2018,110(3):219-230
Background
African-Americans have the greatest gender-ratio imbalance compared to other racial groups in the United States. This has been associated with higher rates of concurrent sexual partnerships, increasing risk of HIV infection. College-educated African-American women are of particular interest as they are not often represented in studies on HIV prevention, while their dating and sexual negotiation patterns may differ from those of their lower-educated and lower-income counterparts more often the subject of study in HIV research among African-Americans.Method
In this qualitative study, we investigate: a) how the gender-ratio imbalance is perceived by college-educated African-American women, b) how they feel limited partner availability impacts heterosexual relationships in the African-American community, and c) the influence this has on their sexual decision making and HIV protective behaviors.Results
Four major themes emerged- Limited pool of available male partners, Pressure to get married, Feelings of competition among women for male partners, and Men's negotiating power in relationships.Conclusions
Using the PEN-3 Cultural Model, we discuss how this information may be used to develop interventions for this group of women designed to address their more specific barriers to HIV risk reduction. 相似文献6.
The Viral Activation Transfusion Study (VATS): rationale, objectives, and design overview 总被引:1,自引:0,他引:1
7.
8.
Muckle — Wells syndrome (MWS) is a rare autosomal dominant disease that belongs to a group of hereditary periodic fever syndromes. It is part of the wider spectrum of the cryopyrin-associated periodic syndrome (CAPS) which has only rarely been described in non-Caucasian individuals. It is characterized by recurrent self-limiting episodes of fever, urticaria, arthralgia, myalgia and conjunctivitis from childhood. Progressive sensorineural hearing loss and amyloidosis are two late complications. MWS is caused by gain of function mutations in the NLRP3 gene, which encodes cryopyrin, a protein involved in regulating the production of proinflammatory cytokines. We report two patients with MWS in an Indian family associated with the p.D303N mutation in the NLRP3 gene. These findings promote awareness of these hereditary periodic fever syndromes as a cause for recurrent fevers from childhood in the Indian population.KEY WORDS: Hereditary periodic fever, D303N mutation, Indian family, Muckle—Wells syndrome, p.D303N mutation 相似文献
9.
G N Smith Jr T F Linsenmayer D A Newsome 《Proceedings of the National Academy of Sciences of the United States of America》1976,73(12):4420-4423
Collagen produced by chick neural retina tissue in vitro has the properties of type II collagen. Isolated neural retina tissue from stage 29-32 chick embryos incorporated [14C]glycine and [3H]proline into collagen consisting of alpha1 chains and a higher molecular weight species. The peptides produced by cyanogen bromide digestion of the collagen are identical to those from authentic type II collagen from cartilage in charge properties, as determined by carboxymethyl-cellulose chromatography, and size distribution, as determined by sodium dodecyl sulfate-acrylamide gel electrophoresis. 相似文献
10.