摘要：本文主要对天祝县工程施工对生态环境、空气污染、环境的影响进行了浅析,并对环境影响主要不利影响和对策进行总结,最后提出了环境保护措施设计方案,为更好地推进天祝县工程施工建设提供理论支撑。

摘要：以往对下水道的认识,一般只停留在水力学方面,如污水及水中固体物质的水力输送,晴天、雨天时下水道系统的功能划分等.自从A-B法污水处理工艺出现以来,人们对下水管道中水质的生物净化有所认知,但研究其中有机物质的转化规律还是较少的,对影响下水道中污水水质的物理、化学和生物过程缺乏足够的了解和认识.

摘要：本文介绍了在ＡｕｔｏＣＡＤＲ１２ｆｏｒＤＯＳ平台上开发的用３２位ＷａｔｃｏｍＣ／Ｃ＋＋１０．０编译的ＡＤＳ软件，该软件可自动建立初步设计和施工图设计阶段公路及互通式立交的三维模型。并就如何利用３ＤＳ进行三维透视图的着色泻染以及制作动画做了阐述。

摘要：The paper designed a bionic woven tracheal stent and the stent was a multi-layer tubular structure with a transverse ***( PDO) monofilament and β-hydroxybutyrate and β-hydroxyvalerate copolymers/polylactic( PHBV/PLA) multifilament were chosen as the tissue engineering tracheal stent materials,and chitosan was chosen as the coating material. This study selected appropriate basic fabric structures and prepared the tracheal stent by setting reasonable weaving parameters,then treated the sample with coating and heat setting. Radical compression performances of the horizontal pipeline and longitudinal pipeline of this tracheal stent were investigated,and the experimental results showed that the stent had good performance on radial supporting force and elastic recovery,which meant it could supply adequate supports for cell growth and tissue regeneration of tracheal lesions; the horizontal pipeline could provide a good experimental foundation for reconstruction of the cartilage ring.

摘要：建筑领域的发展直接影响着国民的日常生活,随着国内建筑技术的更新和建筑实力的增长,我国建筑工程数量也在逐步增长,建筑规模不断扩大,为国民提供了更为便捷的服务,促进了国内城市化进程的发展。BIM技术的研究及运用促进了建筑业内的技术改革及创新,将BIM技术运用到钢结构工程内,能帮助建筑人员更大程度地解决工程建设中的现存问题,有助于工程效率和工程质量两方面的提升。为实现BIM技术的灵活运用,为钢结构工程提供更多便捷,笔者结合工作经验分析钢结构工程特性,解析钢结构工程中BIM技术的应用意义,对BIM技术于钢结构工程内的实际应用进行探究,以供相关业内工作者进行参考。