福建10种甲壳动物凝集素的研究   总被引：10，自引：1，他引：10  

戴聪杰  陈寅山 《泉州师范学院学报》2002,20(2):89-94

10种甲壳动物凝集素提取液 ,用 11种天然或经酶修饰的动物及人红细胞进行凝血活性检测 ,同时进行凝集素的糖抑制、热稳定性、pH及Ca2 影响试验 .结果表明 ,每种甲壳动物提取液至少凝集 10种以上天然或经酶修饰的红细胞 .各类红细胞经酶 (蜗牛酶 )修饰后对凝集素的敏感性普遍增强 (人和家鸽红细胞对几种甲壳动物例外 ) .某些种类的凝集素对兔红细胞的凝集活性可被一种或几种糖抑制 .8种凝集素表现出对 pH值和温度的广泛适应性 ,在pH3- 11、温度为4℃ - 90℃范围内对兔血均具凝集活性 .10种凝集素的凝集活性依赖于Ca2 .  相似文献   

A model for making decisions about ethical dilemmas in student assessment     

Robert L. Johnson  Jin Liu  Yin Burgess 《Journal of moral education》2017,46(2):212-229

In this mixed-methods study we investigated the development of a generalized ethics decision-making model that can be applied in considering ethical dilemmas related to student assessment. For the study, we developed five scenarios that describe ethical dilemmas associated with student assessment. Survey participants (i.e., educators) completed an online survey to express their decision-making process when faced with ethical dilemmas relating to student assessment. Based on the literature and the educators’ written responses to the scenarios, elements to consider in an ethics decision-making model related to student assessment include the following: (1) the critical incident giving rise to the ethical dilemma; (2) identification of the conflict elements; (3) decisions about the ethicality of the elements; (4) justification of the decisions; (5) implications; and (6) alternative suggestions. This model offers guidance to educators in considering the dimensions of an ethical dilemma in assessment prior to making a decision.  相似文献   

改进选题思路提高论文质量     

尹秀艳 《北京城市学院学报》2002,(3):78-81

文章介绍了如何指导高等职业学校学生写好调研型论文的方法。  相似文献   

Investigating academic dishonesty among Chinese undergraduate students: does gender matter?     

Yinxia Zhang  Hongbiao Yin 《Assessment & Evaluation in Higher Education》2018,43(5):812-826

The high rate of academic dishonesty reported among Chinese college students has created challenges for practitioners in both domestic and Western universities. Following two contrasting yet complementary scholarly approaches, this study explored the relative importance of predictors indicative of students’ intention to cheat (moral attitude, subjective norm and penalty enforcement) and of their educational preparedness for academic integrity (integrity engagement) in explaining academic dishonesty, with an emphasis on gender differences. We administered a questionnaire survey to a sample of 2009 Chinese undergraduate students. The results indicated that moral attitude and integrity engagement were the major predictors, that subjective norm accounted for marginal variations of academic dishonesty, and that the influence of penalty enforcement was insignificant. Some gender differences on both the mean score and effect levels of the four predictors were revealed. The effects of grade, year and area of study on academic dishonesty (and particularly their joint effects with gender) were noteworthy. These findings are discussed relative to the results of prior studies and the Chinese context.  相似文献   

Effects of RNA interference-induced tryptase down-regulation in P815 cells on IL-6 and TNF-alpha release of endothelial cells     

Jiang YF  Zhao FD  Li XB  Ning YX  Zhi XL  Qian RZ  Yin LH 《Journal of Zhejiang University. Science. B》2008,9(8):656-661

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Globalization as Both Threat and Opportunity for the Hong Kong Teaching Profession     

Wing Wah Law 《Journal of Educational Change》2003,4(2):149-179

The paper examines the roles of theHong Kong government, schools and teachers inthe translation of global economic imperativesinto demands on education, and how suchtranslation affects the teaching profession.Two global imperatives are selected forillustration because of their peculiarforegrounding by the Hong Kong government:international (English) language proficiencyand competence in information technology. Thepaper argues that preparation for economicglobalization not only poses a threat, but alsocreates an opportunity for the development ofthe teaching profession, and that this dependsto a large extent on how the governmenttranslates these global imperatives intodemands on teachers. The government is theprincipal actor in the selection andtranslation of global imperatives. Schools arenot just brokers and enforcers of governmentpolicy, but can be an important buffer betweenthe government and teachers by helping themcope with the imposed imperatives at the schoollevel. Teachers can be key players in acceptingor rejecting such imperatives. Governmentstrategies that are insensitive to teachers'needs and practical concerns create moreproblems than solutions.  相似文献   

高职《装饰构造》课程教学改革探讨     

彭颖 《南宁职业技术学院学报》2006,11(4):19-21

教育部提出高职高专根据“理论知识必须够用,专业知识先进、实用”的原则,建立以技术应用能力为中心的高职教育职业能力系统化课程体系。根据要求,以环境艺术设计专业《装饰构造》课程改革为例,对该课程优化整合做了有益的探讨。  相似文献   

网络游戏语言管窥   总被引：1，自引：0，他引：1  

刘音 《湖南大众传媒职业技术学院学报》2004,4(4):91-93

随着电脑逐渐走进每个家庭，网络已经成为人们生活中不可缺少的一部分。网络语言随之产生，网络语言的产生又推动了网络的流行。网络游戏语言产生的渊源、功能、特点、极其发展方向是网络语言研究的要义。  相似文献   

探析基础教育中教师的话语权能   总被引：3，自引：0，他引：3  

蒋茵 《教育理论与实践》2005,(2)

教师专业发展是当今教育世界的主流话语。基础教育领域教师的话语权能从某种意义上反映的就是教师专业意识的觉醒和主体地位的确立。因此,要改变基础教育教师话语权力的现实缺失,就必须从提高教师的专业能力、提升教师的专业地位着手。  相似文献   

Performance of PAHs emission from bituminous coal combustion     

严建华  尤孝方  李晓东  倪明江  尹雪峰  岑可法 《浙江大学学报(A卷英文版)》2004,5(12):1554-1564

Carcinogenic and mutagenic polycyclic aromatic hydrocarbons (PAHs) generated in coal combustion have caused great environmental health concern. Seventeen PAHs (16 high priority PAHs recommended by USEPA plus Benzo[e]pyrene) present in five raw bituminous coals and released during bituminous coal combustion were studied. The effects of combustion temperature, gas atmosphere, and chlorine content of raw coal on PAHs formation were investigated. Two additives (copper and cupric oxide) were added when the coal was burned. The results indicated that significant quantities of PAHs were produced from incomplete combustion of coal pyrolysis products at high temperature, and that temperature is an important causative factor of PAHs formation. PAHs concentrations decrease with the increase of chlorine content in oxygen or in nitrogen atmosphere. Copper and cupric oxide additives can promote PAHs formation (especially the multi-ring PAHs) during coal combustion.  相似文献