耐受重金属微生物资源的筛选与分子鉴定   总被引：2，自引：1，他引：2  

林毅  方光伟  蔡丽希  彭锟 《泉州师范学院学报》2005,23(2):73-76

从77种芽孢杆菌中筛选出的杀虫细菌苏云金杆菌4AFl，其耐受重金属的最低抑制浓度（minimum inhibitory concentration，MIC）分别为：Cu^2＋124．0mM、Co^2＋277．2mM、Zn^2＋51．1mM、Ni^＋109．4mM．复合污染下，Co^2＋对4AF1菌的毒性被激活，Ni^＋的毒性受抑制．从混合土壤样品及泉州洛江水样中筛选到5个耐受细菌和3个耐受真菌．16S rDNA高变区序列的PCR扩增与测定结果表明．耐受菌1为气单胞杆菌属细菌．耐受菌3为假单胞杆菌属细菌．  相似文献   

Infrared Absorption Spectra of Serpentine Cat＇s Eye from Sichuan Province of China     

LU Bao - qi 《上海大学学报(英文版)》2005,9(4):365-368

Infrared （IR） absorption spectra and X-ray powder diffraction （XRD） patterrns of sexpenfine cat＇s eye from Sichuan Province have been investigated, and infrared absorption bands of the serpentine have been assigned in this paper. The results indicate that the bands near 3 600 - 3 700 cm^-1 belong to the stretching absorption band VOH, the bands in 948 - 1 100 cm^-1 axe assigned to the stretching vibraling band Usvo, and the bands at 600 570 and 440 cm^-1 respectively belong to the bending vibration band VOH, δMg-O and δSi-O. The serpentine cat＇ s eye includes two types： chrysotile and antigorite. Chrysotile has a sharp and intensive band at 3 688 cm^-1 and a weak band at 3 643 cm^-1 , while antigorite has only one intensive band in the region. At vibration band VSi-O, chrysotile and antigorite have a similar feature at 1 071 cm^-1, but the band at 980 cm^-1 in anfigorite has been split into two bands in chrysotile - a strong one at 1 027 cm^-1 and a weak one at 949 cm^-1. In addition, antigorite has a characteristic bending vibrating band δMg-O at 570 cm^-1. Based on the analysis of the feature of crystal structure, their IR differences axe well explained.  相似文献   

The Talking Drawings Strategy: Using Primary Children’s Illustrations and Oral Language to Improve Comprehension of Expository Text     

Kelli R. Paquette  Susan E. Fello  Mary Renck Jalongo 《Early Childhood Education Journal》2007,35(1):65-73

Listening and reading comprehension can be assessed by analyzing children’s visual, verbal, and written representations of their understandings. “Talking Drawings” (McConnell, S. (1993). Talking drawings: A strategy for assisting learners. Journal of Reading, 36(4), 260–269 is one strategy that enables children to combine their prior knowledge with the new information derived from an expository text and “translate” those newly-acquired understandings into other symbol systems, including an oral discussion with a partner, a more detailed drawing, and written labels for the drawing. The Talking Drawings strategy begins by inviting children to create pre-learning drawings. These initial drawings are a way of taking inventory of a child’s current content knowledge about a particular topic. After pre-learning drawings are created and shared, children listen to or read an expository text (e.g., information book, passage from a textbook) on the same topic as their drawing. Pairs of students discuss the information and either modify their pre-learning drawings to be more detailed or create completely new drawings that reflect the recently-acquired information. Students are encouraged to label their drawings with words in a diagram or schematic fashion. By evaluating the “before” and “after” artwork, educators can identify advances in students’ reading and listening comprehension of the terminology, facts, and principles on a particular topic.  相似文献   

现代化中的农民问题   总被引：6，自引：0，他引：6  

尹保云 《河北师范大学学报(哲学社会科学版)》2003,26(1):20-24

农民问题伴随现代化进程始终,只有在一个国家充分实现城市化后才能最后解决。西欧、拉美等地的农民转变受到其历史与环境上的特殊条件的影响,而东亚的“小农制”模式缓和了农民在现代化进程中所难免遭受的苦难,对我们具有重要的借鉴意义。解决我国目前的农民问题,需要新的思路:尤其是转向主要在城市解决农民问题而不只是在农村解决,转向主要依靠个人与社会来解决而不是像以往那样只依赖于政府与官员。  相似文献   

A Process Approach to Community-Based Education: The People’s Free University of Saskatchewan     

Howard Woodhouse 《Interchange》2005,36(1-2):121-138

On the basis of insights provided by Whitehead and John Cobb, I show how the People’s Free University of Saskatchewan (PFU) is a working model of free, open, community-based education that embodies several characteristics of Whitehead’s philosophy of education. Formed in opposition to the growing commercialization at the original “people’s university,” (the University of Saskatchewan) the PFU has spawned distinctive ideals of its own. The PFU reflects Whitehead’s belief in the importance of shared knowledge fostered by community-based education, the value of abstract and practical knowledge, and the power of the imagination to establish a community of learners capable of acting freely together.  相似文献   

Different children’s perspectives on their learning environment     

Gunilla Sandberg 《欧洲特需教育杂志》2017,32(2):191-203

This article reports and discusses findings from an ethnographic case study, aiming to gain a deeper understanding of how different children perceive their learning environment in the first grade of primary school, with regard to social as well as academic aspects. The theoretical framework is based on an interactional perspective, where children’s learning and development are considered to take place in a dynamic and ecological system. The reported results are based on interviews with 16 children, and observed teaching situations during the first year of primary school. Research among children demands special ethical considerations, such as how to avoid questions and interest from the researcher affecting the position of children being vulnerable in some way. The findings show that, within a group of children, facing a similar learning environment, there are significant differences between the experiences expressed. The findings presented support the importance of listening to children when planning educational settings. Listening to and taking into account the children’s different voices is an essential part of research and education that strives for inclusion, learning and well-being of all children.  相似文献   

Studienförderung für Auslandsstudien     

Brigitte Kofler 《Zeitschrift für Hochschulrecht, Hochschulmanagement und Hochschulpolitik: zfhr》2008,7(3):81-90

In der Entscheidung Morgan und Bucher hat der Europäische Gerichtshof zwei Regelungen des deutschen Bundesausbildungsförderungsgesetzes zur Ausbildungsförderung für Auslandsstudien als gegen die Freizügigkeit der Unionsbürger nach Art 18 EGV verstoßend und somit gemeinschaftsrechtswidrig angesehen. Das Urteil unterstreicht die Bedeutung, die der Gerichtshof der Freizügigkeit und der Gleichbehandlung von Unionsbürgern im Bildungsbereich zuerkennt. Dies wird von Österreich auch bei Klärung der Hochschulzugangsproblematik zu berücksichtigen sein. Das durch eine Novelle zum österreichischen Studienförderungsgesetz eingeführte Mobilitätsstipendium ist entsprechend den vom Europäischen Gerichtshof in Morgan und Bucher entwickelten Grundsätzen am Gemeinschaftsrecht zu messen.  相似文献   

儿童文学中人文关怀的失落与回归     

兰芳 《教育探究》2006,(2)

儿童文学中的理性关怀和人文关怀二者是相辅相成的。但在儿童文学的发展过程中,这两种关怀严重失衡。儿童文学对理性的张扬,使作品充满了说教色彩,导致了儿童文学中人文精神的极度萎缩,新时期的改革开放带来文学观念的大变革,儿童文学创作也在反思中前进,一改过去单一、枯燥的说教面孔,在不违背理性教育的同时,给儿童以更多人文精神上的关怀。  相似文献   

The effectiveness of post-16 pathways for gaining employment associated with undergraduate degree study     

Katy Joy 《Journal of Further & Higher Education》2018,42(7):953-968

This article sets out to examine the effectiveness of five different post-16 study pathways and the impact that spending time away from education has on gaining employment associated with an undergraduate degree. It also explores advice and guidance for students looking at post-16 study options, higher education and employment. An initial online survey was used, followed by case studies to form a mixed-method approach. The findings suggest that a vocational pathway better prepares students for making decisions around employment and study in comparison to the more traditional A Level pathway. They also highlight that a period of one to four years after finishing post-16 study and starting undergraduate degree study is the most effective for students to gain employment associated with their undergraduate degree. Finally, it was found that most participants did not have positive experiences with advice and guidance regardless of their pathway.  相似文献   

阿尔兹海默症患者的语义记忆损伤:表现、理论及展望     

方燕红  尹观海 《宜春学院学报》2020,(2):116-120

图片命名、范畴流畅性等神经心理学测验表明,阿尔兹海默症(AD)患者普遍存在语义记忆的损伤,并随着病程的发展表现出进行性与弥散性特点。AD患者语义记忆的损伤既可能由语义知识的存储障碍造成,也可能由语义知识的提取障碍引发,还可能由存储与提取的双重损伤造成。未来研究应开发出对早期AD检测更为敏感的语义记忆测验,并采用横向与纵向多种研究技术与手段,考虑不同语言文化背景下AD患者语义损伤的情况,以综合分析AD患者语义记忆损伤的实质及其发展趋势。  相似文献