论电器设备的接地

电器接地问题非常重要,但极易被忽视。本文结合工作实际,讨论了各种接地应注意的问题。     

新疆旅游产业经济贡献综合影响分析

随着旅游业对经济发展贡献逐渐提高,新疆拟把旅游业作为支柱产业来培育,为了全面科学的评价旅游产业的经济贡献,文中参考相关支柱产业衡量标准,选取产业增加值占GDP的比重、需求收入弹性、综合就业容量、产业关联度四个评价指标,通过计算分析得出新疆旅游产业尚未达到支柱产业的标准的结论,并提出相关对策建议。     

三种连接方式结构保温板(SIPs)传热性能研究

SIPs (Structural Insulated Panels)在实际工程中常用的连接方式有三种,连接部位是墙体的热桥部位,影响墙体的整体传热性能。笔者采用一维稳态热箱法对三种连接方式进行测试,分别对比覆面板为杉木指接材SIP墙体三种不同连接方式的热流密度、传热均匀性、温差分布等热工性能,结果显示使用小尺寸SIP作为墙体间连接具有较低的传热系数和较稳定的传热性能,综合传热性能较好。     

基于SPA的区域水资源与经济协调发展评价

从区域水资源与经济协调发展理念出发,构建区域水资源与经济协调发展的评价指标体系,运用集对分析(SPA)理论建立了区域水资源与经济协调发展的评价模型。实例分析结果表明,该评价模型具有思路清晰、简单实用和分析结果可靠的优点,可用于深入研究水资源和工业经济的协调发展。     

移动式集材—50拖拉机原木装车架杆的研制

移动式集材—50拖拉机原木装车架杆是由集材—50拖拉机改制成的简易装车设备。本文着重介绍了该设备的结构特点,主要性能及使用情况等。     

南斯拉夫玉米种质BC8241Ht的改良效果评价

以欧洲玉米种质BC8241Ht直选系南21-3及其改良系为材料,按NCⅡ杂交模式,应用灰色关联分析法对直选系南21-3及其改良系进行综合评价。结果表明,以BC8241Ht种质作为核心育种材料所实施的一系列改良选择,对提高自交系的配合力和杂交后代的综合表现效果是明显的。以配合力或实际测定值作为评价依据,其评价效果是一致的。     

启蒙阶段的《建筑设计》教学衔接及启发问题

通过对启蒙阶段《建筑设计》课程教学方法的调研,发现了诸多问题。针对这些问题,从教学内容安排、任务布置角度阐述了实施对策,构建了以基本功培养为基础,＂构成＂认识为先导,＂模型＂手段为辅助,任务要求为方向的教学体系,探索了启蒙阶段建筑设计课程教学衔接及启发的途径。     

后税费时代的村庄公共权威: 路向与选择

文章在对农村进行实证调查基础上,以中国现代化作为大背景,采用国家——社会互动关系的分析框架,沿着历时性与共时性分析相结合的研究路径,探讨村庄公共权威演变轨迹。本文认为,前税费改革时期村庄公共权威的演变主要经历了传统型权威主导时期、现代行政型权威兴起及扩张时期和行政型权威固化时期三个阶段。后税费时代的村庄公共权威将朝着去政治化和去行政化方向发展。重构村庄公共权威,需要切实推进村民自治建设,大力发展农民合作组织,加大对乡村的财力支持。     

Design evaluation of a fish cage mooring system with different bridle line connections using model experiments and simulations

Because fish cage systems are strongly influenced by various marine environmental conditions such as currents and waves, structural safety design is of crucial importance during their installation. It is particularly important to design a technical solution for a mooring system. In this study, we designed four types of fish cage systems with different bridle connection arrangements (two single-rope and two multiple-rope connection methods) to evaluate the structural safety of fish cage systems based on the bridle connection arrangement and to propose an efficient design direction. The level of the structural safety of the fish cage system in terms of the resistance force, shape, and inside volume reduction ratio was found to vary according to the position of the frame lines connected to the bridle lines, the number of bridle lines, and the angle between the frame line and the direction of currents and waves. Improved structural safety was observed when the bridle lines were connected to the midpoints of the frame lines compared to those connected to the vertices, and the multiple-rope connection method was found to provide higher structural safety than the single-rope connection method. Increased fish cage system structural safety was also confirmed when the frame line orientation was 90° to the direction of currents and waves compared to that at 45°. From these findings, it can be concluded that the structural safety of a fish cage system can be improved by using multiple bridle lines to disperse the tension of the mooring lines connected to the frame lines and by installing the fish cage with the frame lines aligned at an angle that minimizes the projected area exposed to currents and waves. Moreover, the simulation technique presented in this study is expected to contribute to the efficient evaluation of the structural safety of various fish cage mooring systems designed using multiple-rope connection methods, accounting for the number and position of bridle lines connected on a frame line.     

快固型胶粘剂的试验研究

采用３类１３种二液型快固胶粘剂，对桦木板材进行了胶合试验，试验结果表明，在一个胶合面上涂第１液，涂胶量９０ｇ／，＾３，在另一个胶合面上涂第２液，涂胶量４５ｇ／ｍ＾２，把２块板材的涂胶面密合，用０．５ＭＰａ的压力加压４ｍｉｎ，解压后按日本工业标准Ｋ－６８５２胶粘剂的压缩剪断胶合强度试验方法，检验初始，常态，耐水，耐热压缩剪断胶合强度和凝胶时间，符合标准规定。