广西成年农民台阶指数的调查分析

运用文献资料研究法、对比法、评分法和数理统计法,对广西成年农民的台阶指数进行研究。研究表明,广西成年农民台阶指数的平均值总体上较理想,广西成年农民女子的台阶指数平均值的水平优于男子,广西成年农民台阶指数呈现高年龄比低年龄要好的状态。     

体育教学中教育生命机制的认识理念

从人的生命活动的实际需要出发,分析了人的精神生命活动特点,并指出体育教学的实现就是基于人的生命活动。通过分析目前高校体育教学存在的弊端,提出了有利于人的精神生命活动的体育教学改革基本思路。     

Environmentally-induced stone decay: the cumulative effects of crystallization–hydration cycles on a Lincolnshire oopelsparite limestone

An investigation has been undertaken at St Andrew’s church, Walpole St Andrew, Norfolk, to establish the underlying causes of the observed stone decay to the upper parts of the six stone piers. The stone decay was first recorded in the early 1930s. The salt-contaminated masonry within the church has been shown to undergo severe salt decay during the summer, with little damage occurring over the winter months. The south aisle piers have been shown to decay 2.5 times faster than the north aisle piers. Although crystallization–hydration cycles have been identified, the rate of decay is at its greatest when the cycling is relatively infrequent. This was not the expected trend. Furthermore, it has been shown that during extended periods where the ambient relative humidity is less than 75%, the rate of decay reaches a maximum. It is the length of this ‘drying’ period that apparently has the greatest influence on the rate of decay and could explain the significant difference in the rate of decay between the south and north aisle piers. The results have serious implications for passive conservation, where it is often recommended to lower the ambient relative humidity to well below the equilibrium relative humidity of the salt contaminant, to avoid crystallization–hydration cycles. Since, at the time of building, the church was situated on the coast, it is possible that the sodium chloride contamination occurred during the building process (1440–1520), particularly since the area was prone to sea-flooding at this time. Alternatively, the salt could have been applied as a treatment during the general restoration of 1897. Whatever the source of the salt, it seems likely that the ambient environment was changed by the insertion of a sealed floor in 1897, which could account for the onset of the salt decay.     

浅谈无机化学中元素部分的教学

本文针对学生学习无机化学中元素部分的难点,探讨了在教学过程中应用无机化学理论对元素学习进行指导、适时进行归纳总结、通过实验操作加强对知识的巩固等问题。     

绿色壁垒:我国农产品出口亟待逾越的屏障

加入WTO以来,由于国外"绿色壁垒"的阻碍,我国农产品出口损失很大.本文揭示了"绿色壁垒"的种种表现及产生的原因,并提出攻克"绿色壁垒"的建议及对策.     

世界新闻通史体系刍议

本文归纳了已有外国新闻史研究的四种模式 ,并指陈其利弊。在此基础上 ,提出建立世界新闻通史体系的治学观点———空间上 ,能涵盖中外 ,以整个世界新闻传播全局为对象 ;时间上应古今贯通 ;研究对象上应涉及新闻事业、新闻制度和新闻观念     

西北地区社会、经济发展现状与体育市场基本状况的调查分析

运用综合集成法、献资料法和专家调查法，按照事先确定的查找范围和途径，并经汇总、整理、分类及筛选，从中获得研究所需的献资料和数据。经过对相关献资料及问卷调查结果的分析研究，得到一个比较全面、客观的评价结果，基本了解了西北地区体育市场现状及基本态度和看法。     

“掌握学习”教学模式应用及其对大学生自主体育行为影响

运用卢布姆“掌握学习”原理，在大学体育教学加以尝试性实验。结果证明，大学生对通过身躯努力，所掌握的运动技能有较深的感性及理性认识，喜好程度明显超过一般体育教学过程中的大多数运动项目，且运用习得的一技之长，进行娱乐健身的次数明显增加。     

试析新赛制对羽毛球运动的影响

21分每球得分制在2006年的羽毛球比赛中试用,新赛制力求缩短比赛时间、增强对抗性、偶然性和观赏性,强调进攻和快节奏。目的在于把羽毛球运动推向普及,吸引更多的选手参赛、观众关注、企业赞助和电视转播。新赛制对选手提出了更高的要求。     

大学生田径运动员的运动损伤流行病学调查与分析

目18支大学生田径运动队共计342人进行了运动损伤的调查及病因分析。结果显示:运动损伤主要为踝关节扭伤,股后肌群拉伤,膑骨劳损,腰背肌损伤等。发生的主要原因:训练组织不合理,身体机能欠佳,训练水平不够,心理状态不良等。建议运动损伤应从运动训练、组织管理、心理教育等角度进行防治并举,最大限度地减少其发生率。