Anatomical studies on water hyacinth (Eichhornia crassipes (Mart.) Solms) under the influence of textile wastewater     

Mahmood Q  Siddiqi MR  Islam Eu  Azim MR  Zheng P  Hayat Y 《Journal of Zhejiang University. Science. B》2005,6(10):991-998

Water hyacinth (Eichhornia crassipes (Mart.) Solms) is a prolific free floating aquatic macrohpyte found in tropical and subtropical parts of the earth. The effects of pollutants from textile wastewater on the anatomy of the plant were studied. Water hyacinth exhibits hydrophytic adaptations which include reduced epidermis cells lacking cuticle in most cases, presence of large air spaces (7∼50 μm), reduced vascular tissue and absorbing structures. Textile waste significantly affected the size of root cells. The presence of raphide crystals was noted in parenchyma cells of various organs in treated plants. Project (No. 30070017) supported by the National Natural Science Foundation of China  相似文献   

In a practical mood: Studying for a profession in the changing kibbutz     

Arza Avrahami  Yechezkel Dar 《Higher Education》2004,47(1):51-71

The influence of recent social and economicchanges in the Israeli kibbutz on the prolongedstage of youth was examined with respect tohigher education. The young people on thekibbutz of the late 1990s appear lessmoratorial and more instrumental about theirfuture and commence higher education earlierthan in previous age cohorts. When starting tostudy, their educational and professionalprospects are crystalized as those of thenon-kibbutz student. Most of them opt foracademic, degree-granting studies, but a higherpercentage than among the general populationprefer vocation-oriented colleges to theresearch oriented universities. In choosingfields of study, they prefer more appliedstudies like engineering, social services andpractical arts and are less likely to choosesciences and the humanities. De-communalizationand economic instability of the kibbutz,inadequate preparation in kibbutz high schoolsfor the competitive admission to theuniversities, exposure to a restricted range ofoccupations during adolescence, and lack of acultural tradition supportive of elitiststudies may explain this practical mood, moresalient among kibbutz women.  相似文献   

五十年来青海汉语方言研究述评     

张成材 《青海师范大学学报(哲学社会科学版)》2005,(3):110-113

本全面系统地评述了五十年来青海汉语方言研究的进展情况。认为五十年来青海汉语方言研究具有从无到有的开创性质，参加人数不算少、论数量也不算少、内容涉及面也不算窄，但比起兄弟省市来看，相当滞后。目前存在一些亟待解决的问题，诸如：培养后继队伍的问题；缺乏方言研究的组织领导和专门研究机构问题；如何将研究内容引向纵深的问题等等。  相似文献   

The policy problem: the National Disability Insurance Scheme (NDIS) and implications for access to education     

Ben Whitburn  Julianne Moss  Jo O’Mara 《教育政策杂志》2017,32(4):467-479

This paper explores the changing terrain of disability support policy in Australia. Drawing on a critical disability framework of policy sociology, the paper considers the policy problem of access to education for people with disabilities under recent reform by means of the National Disability Insurance Scheme (NDIS), which commenced full roll-out across the country from July 2016. The paper reviews NDIS reports, legislation and associated literature to consider how eligibility to scheme participation and education services are shaped, and how education is positioned in the development and implementation of the NDIS. The analysis highlights tensions that exist for people with disabilities and their families who both access the scheme and who might draw on its provision to support their education, because of the way the policy is oriented towards pathological categorisation, standardised outcomes and service delineation rather than integrated support and informed involvement. The paper concludes by arguing that despite the policy priority across Organisation for Economic Co-operation and Development countries of increasing lifelong learning opportunities, fragmented NDIS policy in Australia prevents people with disabilities from achieving this ideal.  相似文献   

Characteristics of students who benefit from high-quality mathematics instruction     

Kristie K. Jones  James P. Byrnes 《Contemporary educational psychology》2006

The present study examined characteristics of students who took advantage of the opportunity to learn Algebra II from a highly skilled teacher. In particular, student information was gathered concerning: (a) the amount of mathematics students knew prior to the class, (b) their motivation for learning mathematics, (c) the number and types of interactions they had with the teacher during class, (d) degree of self-regulation, and (e) general aptitude. A model for achievement was used that suggests both opportunity and propensity are important (i.e., students must be willing and able to take advantage of opportunity). Support for the model was found. Propensity to take advantage of a highly favorable opportunity accounted for almost sixty percent of the variance in achievement. In particular, students who were self-regulated, had strong mathematics backgrounds, and had low levels of frustration benefited more from high-quality instruction.  相似文献   

特色鲜明的加拿大家政课程     

赵亚夫 《外国教育研究》2005,32(7):24-27

我国以往的社会科课程研究，比较多地关注美国和日本，对其他国家的课程研究涉猎有限。在基础教育改革向纵深发展的今天，我们有必要进一步放宽眼界，从各国的社会科课程建设中获得启示。文章正是出于这个目的，围绕加拿大安大略省《社会与人文课程标准(9-10年级)》(1999年版)，着重介绍了其中的家政学习内容和方式，希望借此增进我们对社会科这门综合课程的理解。  相似文献   

Raising children’s self-efficacy through parental involvement in homework     

Keith Williams  Jennifer Swift  Hefin Williams  Victor Van Daal 《Educational research; a review for teachers and all concerned with progress in education》2017,59(3):316-334

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高等教育哲学与高等教育研究的创新发展——中美两部《高等教育哲学》的启示     

彭红玉 《煤炭高等教育》2007,25(4):39-41

无论是高等教育实践还是高等教育学的学科发展都期待我国当前的高等教育研究有创新性的发展,而高等教育研究的创新发展离不开成熟的高等教育哲学的支撑.哲学的贫乏一直是我国高等教育研究创新发展的重大障碍之一,而高等教育生命论哲学的兴起和发展则昭示着我国高等教育研究创新发展的新契机.  相似文献   

Growing up in a tourist destination: developing an environmental sensitivity     

Antonia Canosa  Anne Graham  Erica Wilson 《Environmental Education Research》2020,26(7):1027-1042

Abstract

This paper explores how the socio-cultural milieu of a community may foster a sense of environmental stewardship among children and young people. Ethnographic fieldwork, carried out in a popular tourist destination in Australia, revealed that the overt impacts of tourism activity such as littering provoke negative feelings among children and young people; these perceptions can in turn translate into a sensitivity towards the environment. While debated in some circles, a Significant Life Experiences (SLE) lens is useful in understanding children and young people’s lived experiences of – and sensitivity to - environmental issues in the communities where they are raised. SLE is employed in this article to explore how a sense of stewardship towards the environment is developed among children and young people growing up in a tourist destination. Findings suggest they actively contribute to protecting the environment in a variety of ways from regular beach clean ups and educating visiting tourists to participating in rallies and anti-development protests.  相似文献   

克隆技术的研究及其影响     

刘晓英 《河池学院学报》2003,23(4):92-94

概述了动植物克隆技术的理论基础和方法 ,以及该技术在动植物中的应用和发展 ,并就克隆技术对生物多样性及人类社会的影响进行了讨论。  相似文献