摘要：甲醇合成装置生产中的核心设备即为甲醇合成塔,其中的上升管更是重中之重。甲醇合成塔的上升管可能会因为焊缝问题而对反应过程产生影响,最终的反应结果往往不尽如人意。对此,首先提出了甲醇合成塔的结构和选材特征;其次,分析了造成甲醇合成塔上升管焊缝缺陷问题的主要原因;最后,研究了甲醇合成塔上升管缺陷问题的修复和养护方法。

摘要：单一的儿童游戏形式缺少创造性的活动安排,基于自然互动特征的儿童游戏空间为儿童游戏提供了更多的可能性和拓展性。自然互动式儿童游戏空间就是在安全的前提下,对场地设计中活动主体的行为活动、感知方式以及空间布局等相关要素进行考量,使儿童能够自觉地融入自然,挖掘自然的潜能,开发智力、锻炼身体。

摘要：本文介绍了无刷直流电机(Brushless DC Motor,BLDCM)的工作原理,分析了其换相逻辑,对电机系统在Proteus环境下进行了建模和调试,在此基础上对电机开环系统的工作性能进行了仿真和分析,并着重设计和实现了基于Arduino单片机的转速闭环系统。通过仿真结果,验证了该电机具有良好性能,控制系统设计合理,具有可行性。

摘要：功率因数校正是开关电源设计中的一个重要问题,PFC以其外围电路简单,功率因数高而得到广泛使用,但PFC外围参数的设计是一个难点。针对此问题,提出一种确定外围参数的方法。通过理论分析控制器件内部结构、建立数学模型、Matlab仿真分析,从而在理论上完全掌握控制器件外围参数对系统控制性能的影响,避免在调试过程中出现太多的盲点。将此方法确定的参数应用于实际电路,只需经过简单调试,就可设计一款性能较好的高功率因数开关电源。

摘要：本研究以襄阳示范区智慧校园项目为案例,详细分析了项目在规划、设计、施工、验收和运行各阶段的实施情况。通过对项目的具体实践进行总结,提出了智慧校园建设的一些关键要点和实践经验。研究发现,全面的整体规划与协调设计、智能化施工技术的应用、实时监测与数据分析以及用户体验反馈与持续改进,是确保智慧校园项目成功的关键因素。通过科学规划和设计,确保各系统的无缝对接和高效运行;通过智能化施工技术,提高施工效率,确保施工质量;通过实时监测和数据分析,全面了解校园运行情况,不断优化管理决策;通过收集用户反馈和持续改进,提高系统的用户满意度和使用效果。希望本研究的总结和建议,能为其他智慧校园项目的建设提供有益的借鉴和参考,推动智慧校园的不断完善和发展。This study uses the Xiangyang Demonstration Zone Smart Campus project as a case to thoroughly analyze the implementation process across the various stages of planning, design, construction, acceptance, and operation. By summarizing the specific practices of the project, the study identifies key points and practical experiences in smart campus development. The research reveals that comprehensive overall planning and coordinated design, the application of intelligent construction technologies, real-time monitoring and data analysis, as well as user feedback and continuous improvement, are critical factors for the success of a smart campus project. Scientific planning and design ensure seamless integration and efficient operation of all systems;intelligent construction technologies enhance construction efficiency and quality;real-time monitoring and data analysis provide a comprehensive understanding of campus operations, aiding in optimizing management decisions;and collecting user feedback and ongoing improvements elevate user satisfaction and system effectiveness. The findings and recommendations of this study aim to provide valuable insights and references for the development of other smart campus projects, thereby promoting the continuous improvement and advancement of smart campuses.

摘要：自然界所有的物体构造都离不开点、线、面,园林的构造也可归结为点、线、面的巧妙结合。线作为园林重要的构成要素,通过人们巧妙的排列,呈现出纷繁复杂、变化不一的景象。我国的传统绘画讲究"六法",这种绘画模式同样适用于造园艺术。线的应用,就符合其中的"气韵生动"、"骨法用笔"。在造园艺术中,人们视线随着园林中蜿蜒迂回的游廊小径、造型精致的漏窗变换,步移景异,呈现出变幻不一的景色,使人流连忘返。

摘要：随着我国环境研究热点的不断演变和分析仪器的迅速发展,环境仪器分析实验课程也亟须改革。本文以培养学生创新实践能力为目标,首先分析了当前环境仪器分析课程存在的问题。在此基础上,构建了多元化的教学体系,在实验内容和教学方式上进行了改革,并优化了课程考核体系以全面评价学生表现。最后结合“双碳”背景,以固体氧化物电解池的电化学阻抗谱测试实验为例,介绍了该自选实验的实施过程。本文对推进环境仪器分析实验课程改革,培养新时代创新型环境类人才具有借鉴意义。

摘要：以襄阳某商务大楼项目为例,深入探讨了大面积基坑底板施工中的关键技术。重点分析了施工缝的位置选择与处理、防水设计与施工以及不均匀沉降控制措施。研究结果表明,通过合理的施工缝布置、先进的防水技术和严格的沉降监测,项目成功解决了底板施工中的一系列技术难题,确保了工程的结构稳定性和耐久性。本文总结的技术经验与措施对类似工程具有重要的参考价值,为提高未来大规模建筑施工的质量与安全提供了实践依据。Taking a commercial building project in Xiangyang as an example, this paper delves into the key technologies involved in large-scale foundation slab construction. It focuses on the analysis of construction joint placement and treatment, waterproofing design and implementation, as well as measures for controlling uneven settlement. The study demonstrates that by employing well-planned construction joint layouts, advanced waterproofing techniques, and stringent settlement monitoring, the project successfully overcame various technical challenges associated with slab construction, ensuring structural stability and durability. The technical insights and practices summarized in this paper offer valuable references for similar projects and contribute to the enhancement of construction quality and safety in large-scale developments.

摘要：本研究通过现场数据调查、结构设计分析、施工质量问题评估及使用环境影响分析,系统研究了襄阳市某商务大楼连廊支撑牛腿开裂的成因。现场检测结果显示,牛腿开裂主要由施工质量问题引发,特别是钢筋定位不准确和混凝土保护层厚度过厚,同时锚固位置有误进一步加剧了裂缝的扩展。在分析事故原因的基础上,综合对比了多种加固方案,最终选择了外包钢加固作为主要解决方案。加固完成后,通过静载试验、超声波检测和应变监测验证了方案的有效性,结果表明加固后的牛腿在承载力和结构稳定性方面显著提升。研究最终提出了针对类似工程的建议,强调了施工质量控制和合理加固方案选择的重要性,以保障建筑的安全与耐久性。This study systematically investigated the causes of corbel cracking in the corridor support of a commercial building in Xiangyang through on-site data collection, structural design analysis, construction quality evaluation, and assessment of environmental impact. The on-site inspection results showed that the cracking was primarily caused by construction quality issues, particularly inaccurate rebar positioning, and excessive concrete cover thickness, while incorrect anchoring further exacerbated the crack propagation. Based on the cause analysis, various reinforcement options were compared, and external steel reinforcement was ultimately selected as the main solution. After the reinforcement was completed, the effectiveness of the solution was verified through static load testing, ultrasonic testing, and strain monitoring. The results indicated significant improvements in the load-bearing capacity and structural stability of the corbels. Finally, the study provides recommendations for similar projects, emphasizing the importance of construction quality control and the selection of appropriate reinforcement solutions to ensure building safety and durability.