西南民族传统体育文化遗产的保护与传承探析

本文采用文献资料、逻辑分析等方法,通过综述西南地区少数民族传统体育文化的特点、分类和功能,分析少数民族传统体育文化令人堪忧的流失、消亡现状,对如何保护和传承西南地区少数民族传统体育文化提出了指导性的发展策略和具体措施,以期为西南地区少数民族传统体育文化的发展起到一定的推进作用。     

Numerical model application for the restoration of the Racconigi Royal Park (CN, Italy)

After years of neglect and an almost complete lack of maintenance, the Racconigi Royal Park was in an inevitable and widespread state of decay. This decay also involved the waterways that were designed in the nineteenth-century by Xavier Kurten (1811–1840). The seasonal lack of water and the agricultural needs of the farms around the Park made it necessary, during the planning stage of the restoration project, to consider the practicability and the effectiveness of some measures that were conceived to optimize the operation of the restored waterways, without altering the historical structure of the system. The realization of a hydraulic numerical model of the system, which is briefly illustrated in the first part of this case study, resulted to be the most suitable tool to study different possible solutions of the problem. The model simulations in fact helped the restorers put into effect the right remedies to favour the correct flow of the water, to make the whole historical system more efficient and to make its future maintenance easier.     

Conservation of paper relics by electrospun PVDF fiber membranes

Electrostatic spinning (electrospinning) is a useful technique for producing ultrafine fibers with large specific surface areas and porous structures. Polyvinylidene fluoride (PVDF) is a chemically stable material with extraordinary properties. In this research, PVDF fiber membranes were produced directly on paper surfaces by electrospinning to protect brittle paper relics from environmental damage. Tensile strength and elongation tests for paper with and without the deposited PVDF membranes show that the PVDF fiber membranes can effectively protect paper under an externally applied force under both ambient and aging conditions. Water, insects, dust and mould can be isolated by the compact fiber structure while common gases can pass through freely to maintain a favorable environment for the paper relics.     

吉安市战略性新兴产业发展现状及对策

本文介绍了吉安市培育和发展战略性新兴产业的基本现状和主要做法,分析了存在的主要困难和问题,重点阐述了推进吉安市战略性新兴产业发展的相应对策。     

能量守恒下的噪声控制

在噪声的控制中,从能量守恒分析到声强,考虑传播距离、介质吸收及阻挡层对声的穿透与吸收等因素,从而可采取相应的办法达到对噪声的控制。