Comparison of Haptic and Biometric Properties,Bacterial Load,and Student Perception of Fixative Solutions: Formaldehyde Versus Chilean Conservative Fixative Solution with and without Formaldehyde in Pig Kidneys     

Marianne Skopnik-Chicago  Katherine Poblete-Cordero  Natali Zamora  Roberto Bastías  Pablo A. Lizana 《Anatomical sciences education》2021,14(6):836-846

One of the most widely used solutions to fix and preserve organic tissues is formaldehyde, despite reservations regarding its toxicity and the fact that formaldehyde-embalmed bodies lose their original characteristics. Anatomy laboratories have been replacing formaldehyde with solutions that retain the characteristics of fresh tissue. For this purpose, alternative solutions with a very low concentration of formaldehyde or without any formaldehyde have been analyzed. The objective of this study was to compare biometry, coloration, haptic properties, and bacterial load on animal specimens (pig kidneys) embalmed with formaldehyde, and with Chilean Conservative Fixative Solution with and without formaldehyde (formaldehyde chCFS and formaldehyde-free chCFS). Also, the perception of health and biological science students toward specimens treated with different solutions was assessed. The results indicated that there were no significant differences in specimens’ retraction, or bacterial load. Students showed a preference for organs embalmed in formaldehyde chCFS and formaldehyde-free chCFS; indicating that with these treatments they could better visualize structures and that the prosections had greater flexibility and the colors were more similar to those of fresh tissue. Additionally, students recommended the material embalmed in formaldehyde chCFS and formaldehyde-free chCFS for anatomy learning. In contrast, students indicated that formaldehyde-fixation negatively affected their practical experience. In conclusion, embalming with formaldehyde chCFS or formaldehyde-free chCFS provides an advantageous practical experience over the use of formaldehyde and may be an alternative to replace the use of formaldehyde in anatomy laboratories.  相似文献   

‘We are more than EFL teachers – we are educators’: emancipating EFL student-teachers through photovoice     

Luis S. Villacañas de Castro 《Educational Action Research》2017,25(4):610-629

The prevailing pedagogical orientations of English as a foreign language (EFL) education in Spain oppress learners intellectually in ways that are counterproductive to their learning. As a reaction to this, 129 EFL student-teachers (STs) took part during the 2013/14, 2014/15, and 2015/16 academic years in a workshop which drew on the methodology of participatory action research and on photovoice as a data-creating strategy, in order to emancipate these STs intellectually, boost their EFL development, and offer an alternative critical model for their future EFL teaching. The research was assessed collectively through a variety of qualitative strategies. Results showed that the photovoice workshop created a rich and meaningful context for EFL learning, one which enabled the STs to fully actualize their intellectual potential by producing knowledge collectively, thereby setting a memorable educational example for their own future teaching.  相似文献   

国家一般课题"学校德育的人文关怀价值研究"研究成果述评     

全国教育科学规划领导小组办公室 《当代教育论坛》2006,(9):5-9

由浙江大学王东莉副教授主持的国家社会科学基金"十五"规划(教育学科)国家一般课题"学校德育的人文关怀价值研究"(课题批准号:BEA030020)于近日通过了由全国教育科学规划领导小组办公室组织的通讯鉴定.鉴定专家组由中国人民大学罗国杰教授、北京教育科学研究院朱全俊研究员、北京师范大学檀传宝教授、华中师范大学杜时忠教授、中山大学郑永廷教授组成.现将课题成果公告如下:  相似文献   

Role of objectively measured sedentary behaviour in physical performance,frailty and mortality among older adults: A short systematic review     

Asier Mañas  Borja del Pozo-Cruz  Francisco José García-García  Amelia Guadalupe-Grau 《European Journal of Sport Science》2017,17(7):940-953

Sedentary behaviour (SB) has recently emerged as an independent risk factor for different health outcomes. Older adults accumulate long time in SB. Understanding the role that SB plays on health is crucial for a successful aging. This short systematic review summarizes the current evidence related to the effects of objectively measured SB on frailty, physical performance and mortality in adults ≥60?years old. The literature search produced 271 records for physical performance (n?=?119), frailty (n?=?31), and mortality (n?=?121). Finally, only 13 articles fulfilled the inclusion criteria and were included in this review. All articles but one included in the physical performance section (n?=?9) showed a negative association between longer time spent in SB and physical performance. A significant association of SB with higher odds of frailty was found, however this association disappeared after adjusting for cognitive status. Lastly, two of the three included studies showed positive associations between SB and mortality, but this effect decreased or even disappeared in the more adjusted models. In conclusion, there is consistency that SB is negatively associated with physical performance. However, the relationship between objectively measured SB and frailty incidence and mortality rates remains unclear and deserves further research. The use of homogenous criteria to assess SB and the inclusion of more robust research designs will help clarifying the independent effects that SB could have on physical performance, frailty, and mortality. This will ultimately help designing more efficient and comprehensive physical activity guidelines for older adults.  相似文献   

从语法大纲看对外汉语教学和测试理念的发展     

李靖华 《考试研究》2011,(6):68-77

本文主要考察了六个编订于不同时期的对外汉语教学和测试的语法大纲,通过比较分析,本文认为从20世纪90年代至今,对外汉语教学和测试的理念不断变化与发展,理论语法色彩逐渐减弱,显性知识的教学和考查不断减少,同时,教学和测试理念正在由标准规范观向沟通理解观转化。这些变化反映出对外汉语教学和测试理念的发展趋势,适应了汉语国际推广的新形势。  相似文献   

Los Sentimientos,Luchas, y Esperanzas de Cinco Familias Mexicana: The Sentiments,Struggles, and Hopes of Five Mexican Families     

Gilbert Dueñas 《Journal of Latinos & Education》2015,14(4):291-300

Within the everyday space of their modest trailer homes, I observed compelling environments in the households of 5 Mexican families. In their homes, there existed los padres con sus hijos (parents with their children) who intuitively expressed cariño, or love, for one another, conversed in multiple languages, practiced cultural traditions, and inculcated hope in their children’s minds and hearts. As I listened to their steadfast voices and felt their innermost emotions, a clearer understanding came to mind about ways in which educators and families might construct new alliances for the benefit of children’s future in America.  相似文献   

The new synthesis is an old story     

British Society for Social Responsibility in Science. Science as Ideology Group 《New scientist (1971)》1976,70(1000):346-348

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The politics of school choice in two countries with large private‐dependent sectors (Spain and Chile): family strategies,collective action and lobbying     

Xavier Rambla  Óscar Valiente  Carla Frías 《教育政策杂志》2013,28(3):431-447

In many countries choice of school is an increasing concern for families and governments. In Spain and Chile, it is also associated with a long‐standing political cleavage on the regulation of large sectors of private‐dependent schools. This article analyses both the micro‐ and the macro‐politics of choice in these two countries, where low‐status 15‐year‐old students record a significant segregation. At the micro level, some evidence is provided that not only middle‐class skilful choosers but also the political representatives of private‐dependent schools manage to pursue their interests drawing on economic, social and cultural capital. At the macro level, evidence also shows that the lobbies defending private‐dependent schools can use and maintain these power resources. However, in some episodes collective action is an effective power resource for those who campaign in favour of a stricter regulation of these schools, but its influence is much difficult to maintain for longer periods.  相似文献   

Evaluating the feasibility of remotely administered curriculum-based measurement for students with autism: A pilot study     

Sarah S. Mire  Milena A. Keller-Margulis  Amy K. Izuno-Garcia  Emily R. Jellinek  Elías S. Loría Garro 《Psychology in the schools》2023,60(2):345-363

Students with autism may struggle to develop the academic skills necessary for success in school and beyond. Understanding and improving academic skills performance requires appropriate measurement approaches. One such option that has been minimally studied with students with autism is curriculum-based measurement (CBM). Coinciding with the need to study different approaches to academic skills measurement for students with autism was the global pandemic which forced a shift to remote service delivery with little warning. While some autistic students struggled with this shift, others thrived, raising questions about how to further support students with autism in virtual formats. The purpose of this study was to examine the feasibility of using remotely administered CBM for autistic students by studying both the practicality and acceptability of this approach. Five students with autism (Grades 2–5) participated in this pilot study, completing reading, math, and writing CBMs at three time points. Student behavior and assessor fidelity were collected to examine practicality; assessor ratings of usability provided insight regarding the acceptability of the approach. Results indicated that remotely administered CBM is feasible for some students with autism: all participants completed the study tasks with minimal behavioral difficulties, and assessor ratings of acceptability were high.  相似文献   

Institutional repository software platforms at undergraduate libraries in the United States     

Elías Tzoc 《College & Undergraduate Libraries》2016,23(2):184-192

For primarily undergraduate institutions, institutional repositories can become effective tools for communicating and showcasing faculty and student research, facilitating open access initiatives, or supporting new scholarly communication practices. Choosing the right software platform is crucial to the success of a repository initiative. The literature suggests that there are only two or three software platforms heavily used in undergraduate libraries. This article aims to give a landscape of the repository platforms used in sixty-seven undergraduate libraries in the United States in late 2013; it also includes the results of a short survey about current institutional repository software platforms and users/administrators’ satisfaction.  相似文献