运动训练对应激大鼠血清皮质酮和白细胞介素1β的影响

为探讨中小负荷的运动对心理应激大鼠血清皮质酮和IL-1β含量的影响。对大鼠进行为期8周的不同负荷运动训练,并在运动后期施加2周的心理应激,测定大鼠血清中皮质酮和IL-1β含量。结果显示:①经过2周心理应激后,大鼠血清中IL-1β含量显著低于对照组,而皮质酮含量显著高于对照组;②经过8周运动训练后,30min运动组和60min运动组IL-1β含量均显著高于对照组,皮质酮含量显著低于对照组;同时30min运动+应激组和60min运动+应激组大鼠血清中IL-1β含量显著高于应激组,皮质酮含量明显低于应激组。说明运动训练可以降低心理应激反应程度,减少内源性皮质酮释放,使血液中IL-1β含量升高,维持机体在应激状态下的免疫功能的稳定。     

HiLo(高住低训)——耐力训练的新方法

自 1990年美国学者Dr.Leving提出HiLo (高原居住、低处训练 )的新方法 ,越来越受到人们重视 ,实践证明这是比传统高原训练更行之有效的方法之一 ,本文以比较的角度介绍此方法 ,旨在引起我国体育工作者的重视 ,加强这方面的认识。     

Teaching in mainstream and special schools: are the stresses similar or different?

Research evidence, and the direct experience of many practitioners, suggest that teaching is a stressful profession. However, a number of factors, including, for example, the age group taught, the number of pupils in the class, the hours worked and the type of school, may mediate the types and degree of stress experienced. In this article, Michelle Williams, who carried out this study as part of her degree in psychology at the University of East London and who is not a teacher, and Professor Irvine Gersch, course director of the MSc course in educational psychology at the University of East London, describe work undertaken to compare whether teaching in a mainstream or special school is perceived as more stressful and whether there are different stresses in both types of school.
The authors designed a questionnaire to measure teacher stress and collected data from 41 teachers in three mainstream and two special schools. Their results reveal no significant difference in the overall level of stress experienced between mainstream and special school teachers, but five factors do emerge indicating that different types of stress are experienced in the different school settings studied.     

抗氧化剂的补充与运动

综述了运动性氧化应激的概念、产生及其与运动的关系，以及以抗氧化剂的研究现状，阐明补充抗氧化剂对运动性氧化应激的作用及运动能力的影响。     

青霉素对受冻害水稻种子发芽和幼苗生长的影响

经一定浓度青霉素浸泡的水稻种子能增强对低温(-5℃)抵抗能力,并对种子发芽和幼苗生长具一定的促进作用。     

高能脉冲冲击硬化波过程计算方程

对有关流体弹塑性方程求解的应力应变关系，动力屈服应力，高压状态方程确定，以及边界条件和波阵面处理进行了叙述。同时给出适用高能脉冲冲击硬化计算的一维完整流体弹塑性拉格朗日方程组。     

模拟高原训练对游泳运动员血液载氧能力的影响

以山东省游泳队重点运动员为实验对象,通过模拟高住低练方式训练3周,观察运动员在机体血液载氧能力方面的变化.研究认为:模拟高住低练可使游泳运动员RBC、HGB、HCT升高,血液载氧能力增加.其作用机制可能由于缺氧刺激使EPO合成增加所致.     

对运动心理学中关于应激、唤醒和焦虑概念的思考

采用文献资料法,对文献进行整理,对应激、唤醒和焦虑的概念进行探讨,旨在阐明三者之间的关系。应激是一个过程而绝非一种状态,唤醒可以是应激过程中的某种状态,而焦虑是心理唤醒水平中的一个部分。在一定范围内可以用焦虑水平来反映唤醒水平,但它决不能代替唤醒概念的全部。     

Occupational stress, negative affectivity and physical health in special and general education teachers in Greece

Teacher stress has attracted considerable attention, yet few studies have focused on special education teachers. This article, by Lambros Lazuras of the South-East European Research Centre (SEERC) in Thessaloniki, reports research designed to explore differences in the stress levels of general and special educators in Greece and provides preliminary evidence for a framework to understand the process of special education teacher stress. A total of 70 teachers from general and special education schools from a large Greek city participated in the study by completing questionnaires. Measures included occupational stress deriving from interpersonal conflict, organisational constraints, workload, work-related negative affectivity and health outcomes. Data analyses allowed for inferences regarding the dynamic interaction among the study variables. Findings appear interesting in terms of advancing current understanding of the relationships between different sources of job stress within the special education teaching context and provide general guidelines for future policies aiming to counter special education teacher stress.     

冻结凿井时冻结壁的非线性数值分析

本用有限变形理论对人工冻结壁施工的几何非线性和冻土蠕变材料非线性问题进行了非线性数值分析。通过对大量数值计算的数据进行回归分析后，得出了冻结壁应力场与时间的关系，冻结壁位移场和工作面底鼓与段高、时间的关系，并且对工程实际施工提出了相应的建议。