全文获取类型
| 收费全文 | 81篇 |
| 免费 | 0篇 |
专业分类
| 教育 | 52篇 |
| 科学研究 | 11篇 |
| 各国文化 | 1篇 |
| 体育 | 8篇 |
| 文化理论 | 1篇 |
| 信息传播 | 8篇 |
出版年
| 2023年 | 1篇 |
| 2021年 | 1篇 |
| 2019年 | 3篇 |
| 2018年 | 4篇 |
| 2017年 | 5篇 |
| 2016年 | 2篇 |
| 2015年 | 2篇 |
| 2014年 | 5篇 |
| 2013年 | 10篇 |
| 2012年 | 6篇 |
| 2011年 | 9篇 |
| 2010年 | 2篇 |
| 2009年 | 1篇 |
| 2008年 | 3篇 |
| 2007年 | 2篇 |
| 2005年 | 8篇 |
| 2004年 | 7篇 |
| 2002年 | 1篇 |
| 2000年 | 2篇 |
| 1995年 | 1篇 |
| 1987年 | 1篇 |
| 1985年 | 1篇 |
| 1979年 | 1篇 |
| 1967年 | 1篇 |
| 1959年 | 1篇 |
| 1855年 | 1篇 |
排序方式： 共有81条查询结果，搜索用时 31 毫秒
1.
Wojciech Szczęsny Magdalena Kuligowska-Prusińska Stanisław Dąbrowiecki Jakub Szmytkowski Adrian Reśliński Maciej Słupski 《Journal of Zhejiang University. Science. B》2018,19(1):65-70
Purpose
Metalloproteinases are a key component of the pathogenesis of abdominal hernias. Obesity is considered a risk factor in herniogenesis and hernia recurrence. The aim of this study was to evaluate the serum concentrations of metalloproteinase-2 (MMP-2), MMP-9, MMP-13, and adiponectin in morbidly obese and nonoverweight controls.Materials and methods
The participants were recruited from among patients undergoing bariatric and non-bariatric surgery and divided into two groups: I (body mass index (BMI)≥35 kg/m2, n=40) and II (BMI<25 kg/m2, n=30). Serum concentrations of MMP-2, MMP-9, MMP-13, and adiponectin were measured using enzyme-linked immunosorbent assay (ELISA).Results
A statistically significant difference between groups was observed for MMP-2 concentration. The median MMP-9 concentration was higher in the obese group, but the difference was not statistically significant. Median MMP-13 concentrations did not differ between groups. Serum adiponectin concentration was insignificantly higher in the non-obese group.Conclusions
The elevated serum MMP-2 and MMP-9 concentrations in obese individuals may be related to the higher incidence of incisional hernias in this population.2.
2020年建成创新型国家是我国本世纪的宏伟目标,要实现这个目标,需要大批素质高能力强的创新型人才．高校教师既是创新型国家建设的主力军,又是培养建设创新型国家高素质人才的教育者,因此提升高校教师科学素质是我国建设创新型国家的迫切需要．目前我国高校教师的科学素质现状难以胜任创新型国家建设主力军和创新型人才培养的双重任务,必须采取有效措施和途径,提升高校教师的科学素质,为创新型国家建设做贡献． 相似文献
3.
AbstractWe examined the progress made by 132 six-year-old French-speaking children in their preliteracy skills during four kinds of interventions. Three of these interventions concerned invented spelling, where the children tried to spell words. In the first condition, they were encouraged to reflect on conventional spellings. In the second condition, they reflected on spellings that were slightly more complex than theirs, while in the third condition, they reflected on increasingly complex spellings that eventually led to the conventional spellings. The fourth condition (control) consisted of phonological training. We assessed the children’s phonological awareness, letter knowledge, spelling, and decoding skills, controlling for vocabulary and nonverbal cognitive ability. Posttest results indicated progress in each condition. The greatest progress was observed in the second condition for decoding, spelling, letter-name knowledge and syllable awareness, and in the control condition for phoneme awareness. Overall, results showed that all kinds of interventions led to very similar levels of progress, but that improvements were greater for interventions that focused on the children’s initial invented spellings - in other words, when they adopted a Vygotskian perspective. 相似文献
4.
5.
Nicol CJ 《Learning & behavior》2004,32(1):72-81
This review highlights two areas of particular interest in the study of social learning in fowl. First, the role of social
learning in the development of feeding and foraging behavior in young chicks and older birds is described. The role of the
hen as a demonstrator and possible teacher is considered, and the subsequent social influence of brood mates and other companions
on food avoidance and food preference learning is discussed. Second, the way in which work on domestic fowl has contributed
to an understanding of the importance of directed social learning is examined. The well-characterized hierarchical social
organization of small chicken flocks has been used to design studies which demonstrate that the probability of social transmission
is strongly influenced by social relationships between birds. The practical implications of understanding the role of social
learning in the spread of injurious behaviors in this economically important species are briefly considered. 相似文献
6.
7.
8.
9.
Rita Zajácz Ph.D. 《广播与电子媒介杂志》2013,57(4):652-667
This article traces the definition of the public interest from the Navy Department through the FRC, to the FCC, with regard to the right mixture of competition and monopoly in international radiotelegraphy and identifies foreign policy as an important policy area where regulatory autonomy is enhanced. Policymakers defined the public interest independently of industry pressure because of internal divisions in the industry and, more importantly, because the strategic and international dimensions of the policy area brought the Navy Department into the regulatory mix and prompted the Commission to adopt a realist, rather than a liberal, framework. 相似文献
10.
This mixed methods study explores a service-learning experience embedded in a social foundations course in a teacher education program. The authors differentiate learning outcomes for social justice and charity service-learning, and utilize this framework to examine whether the service-learning experience fosters a social justice perspective. The findings demonstrate that while the experience did foster social justice perspectives for some students, the data also reflect evidence of learning outcomes that align with charity service-learning. 相似文献