日粮粗蛋白水平对皖西白鹅蛋品质和血清生化指标的影响

目的:研究日粮粗蛋白(CP)水平对皖西白鹅蛋品质、营养成分及血清生化指标的影响.方法:选用50周龄体重相近且健康皖西白鹅150羽(母鹅120羽、公鹅30羽),均随机分为3组,每组50羽(公母比1:4).各组除C P水平(分别为14％、15％、16％)不同外,营养水平及饲养管理均相同.于产蛋中期(54周龄)每组随机选取6羽母鹅,翅静脉采血测定血清生化指标,另取60枚种蛋测定蛋品质和营养成分.结果:CP 15％ 组蛋比重和蛋黄颜色、血清ALT含量、蛋内Val、Met、Tyr含量显著高于CP 16％ 组(P<0.05);各组间蛋形指数、蛋壳厚度、蛋白高度、蛋黄比例、蛋清比例无显著差异(P>0.05);CP 14％ 组Pro、Val、Tyr含量显著高于CP 16％ 组(P<0.05),各组间Asp、Thr、Ser、Glu、Gly、Ala、Ile、Leu、Phe、His、Lys、Arg含量差异不显著(P>0.05).CP 15％ 组血清UA含量显著低于CP 14％、CP 16％ 组(P<0.05).各组间血清TC、TP、ALP、BUN、Ca含量无显著差异(P>0.05).结论:对于54周龄皖西白鹅,相对C P 14％、C P 16％ 日粮而言,日粮C P水平为15％ 的日粮更适用于实际生产,可明显提高种鹅机体性能和蛋品质.     

Teacher alienation in Hong Kong

Teachers’ negative emotions began to receive attention in the Hong Kong context in the mid-1990s. As negative emotions may affect both teachers’ well-being and the quality of their teaching, Hong Kong education policy-makers and educators have used psychological approaches to determine the reasons why teachers experience negative feelings. However, these approaches fail to accommodate the social causes of negative emotions. Therefore, this study investigates the possible social causes of teachers’ negative emotions from the perspective of alienation theory. In-depth interviews with 21 teachers in Hong Kong reveal that Hong Kong teachers may be suffering from alienation (characterised by a sense of powerlessness, meaninglessness, isolation, and self-estrangement) due to their experiences of teaching, their employment status, and their structural position in schools, which are related to the occupational and organisational structure of teaching. The findings also indicate that patterns of alienation may differ between more and less experienced teachers.     

表面增强拉曼光谱检测系统在实验教学中的应用

根据表面增强拉曼光谱检测技术在医学研究中的一些研究方法和内容,设计和实践了一组适合本科低年级学生学习的教学实验,探索了科研仪器设备在教学实验中的应用的具体方法。实践表明,该实验有利于培养学生的实践能力、创新能力和科研能力。     

Globalization,values education,and school music education in China

This paper examines music education’s legitimation of values as a means of preparing students for entry into the new ‘knowledge society’ of the People’s Republic of China in a global age. It explores the ways in which values education relates to the teaching of both musical and non‐musical meanings in the dual context of nationalism and globalization, and discusses some problems that values education faces in school music classrooms. It examines the ways in which globalization has pressured values education into resolving the apparent contradiction between national identity and national unity in the ever‐changing play of Chinese history and politics. It concludes with a discussion of how music education might juggle three pairs of apparently contradictory relationships in the curriculum: between contemporary cultural and social values on the one hand, and traditional Chinese and Communist ideologies on the other; between collectivism and individualism; and between national and global cultures.     

制动器摩擦表面温度测量方法的研究

为了研究汽车在制动过程中产生的大量热能而使制动器温度急剧上升对其制动性能的影响,在对制动器摩擦热的产生进行理论分析的基础上,设计了制动器试验台及其温度测量装置。采用以应变片测量技术为基础的集流环测量方式,对制动器温度测量的方法进行研究,并对测量结果进行分析,为将来进一步研究制动器的温度测量问题提供有效的帮助。     

纳豆芽胞杆菌对大白鼠肠道菌群的影响

报道了SD大白鼠口服纳豆芽胞杆菌一周后粪便菌群数量的变化情况。服用纳豆芽胞杆菌后，需氧菌肠杆菌和肠球菌的数量明显减少，肠杆菌的数量从8．16log10NCFU/g，减少到7．64log10NCFU/g；肠球菌数量从9．59log10NCFU/g，减少到9．08log10NCFU/g；而厌氧菌双岐杆菌、乳酸杆菌、拟杆菌和梭菌的数量均增多，分别从8．46、10．1、10．69和9．54log10NCFU/g增加到双岐杆菌、乳酸杆菌、拟杆菌和梭菌的生长，抑制需氧菌肠杆菌和肠球菌的生长。     

图书馆服务质量模型及其应用

建立了以满意度、忠诚度为核心的图书馆服务质量模型。该模型不仅建立起影响图书馆服务质量的各个因素(变量)之间的因果关系,而且可以确定图书馆用户价值感、满意度和忠诚度三者之间相互关联、相互影响的程度,为改进服务质量提供依据。图4。表3。参考文献3。     

关于技术创新人才培养的几点思考

新世纪呼唤创新人才,而创新教育是培养创新人才的必然条件。本文主要从高等院校在尊重学生的主体地位、培养学生的问题意识、创造宽松的创新环境等几个方面进行探讨,以最大限度地发挥学生的主动性,全面地进行创新教育。     

鱼化石与沧桑巨变

介绍了中生代晚期至今中国大陆淡水鱼类区系的演替 ,将其与世界其它地区同时代鱼类区系进行了比较 ,发现了一些有意义的分布格局 ,并对某些格局进行了解释。     

Factors that influence university students’ intention to use Moodle: a study in Macau

Educational technology research and development - Moodle is widely used in higher education institutions in this digital age. With the growing popularity of Moodle use in education, this study...