土木工程材料与结构实验创新型教学体系的构建

根据《高等学校土木工程本科指导性专业规范》的要求,文章分析了中南林业科技大学土木工程材料与结构实验课程教学中存在的问题,提出构建土木工程材料与结构实验创新型教学体系的思路,并从实验室管理模式、实验专技教师和实验教学方式等方面给出具体的改革措施。     

我国水资源概况与水体环境化学

主要介绍了我国水资源概况,及我国水体环境现状.指出我国是一个水资源贫乏及水体污染严重的国家,每个公民都应珍惜水资源,节约水资源.     

Children’s and adolescents’ thoughts on pollution: cognitive abilities required to understand environmental systems

Pollution phenomena are complex systems in which different parts are integrated by means of causal and temporal relationships. To understand pollution, children must develop some cognitive abilities related to system thinking and temporal and causal inferential reasoning. These cognitive abilities constrain and guide how children understand pollution processes. Hence, ascertaining whether changes among children’s ideas of pollution are related to system thinking and inferential reasoning abilities could be useful in improving environmental education. Eighty participants between 9 and 16 years old were interviewed to evaluate how children explain different aspects of pollution-related systems. From the explanations found in these interviews, three progressive epistemic structures were reconstructed. The three epistemic structures differ in the type of causal and temporal relationship established by the participants and in the mechanisms that the participants used to relate the pollutant to its effects.     

喀什市区道路交通噪声污染分析

以交通噪声与交通流量之间的线性关系为基点,通过对喀什市交通主干道的布点监测,分析了市区道路交通噪声产生的原因和污染特点.监测表明：近年来,喀什市内交通主干道车流量比以往增加了许多,带来的交通噪声污染严重,声环境质量较差.     

农业面源污染对生态环境的影响及其防治措施

调查表明,农业面源污染具有涉及面广、分散性强、隐蔽强等特点,目前已成为世界各国水环境的一大主要污染源.为此,阐述、分析农业面源污染的主要来源及对生态环境的影响,并提出几点相关的防治对策,以期为农业可持续发展提供一些理论依据.     

基于现场实测的某大跨度悬索桥桥址区风场特性

为了对大桥抗风评估提供可靠依据,结合东海某大跨度悬索桥的健康监测系统,同步实测了桥面及桥塔处的风速,采用统计及频谱分析方法对桥面平均风速和风向、风速随高度变化、风速的脉动特性、相关性以及桥面风场的绕流特性等进行了分析.结果表明:加劲梁纵向不同位置处平均风速大小接近,但平均风向差别较大;无量纲幂指数随风速增大呈明显减小的...     

北岛《无题》诗的多义结构探析

北岛是中国当代朦胧诗创作中最具代表性的诗人之一。长久以来,研究者对北岛《无题》诗的语义解读问题众说纷纭,多从文学角度入手。本文选取其中一首大家较为熟悉的《无题》诗为研究对象,运用结构语义学的方法分析其语义结构并着重对《无题》的多义问题做出科学的揭示。