Construction Technology of Lightning Protection Devices in Building Electrical Installation Engineering

To better improve the electrical safety of buildings and fulfill the role of lightning protection and grounding,this article combines cases and discusses seven aspects of lightning protection devices’construction technology.These aspects include the lightning protection classification of buildings,air terminals,down conductors,grounding devices,division of lightning protection zones,and lightning electromagnetic pulse shielding.Through the introduction of this article,readers can gain a comprehensive understanding of the application and value of lightning protection grounding construction technology in building electrical installation projects.

Research on Copyright Protection Method of Material Genome Engineering Data Based on Zero-Watermarking

In order to effectively solve the problem of copyright protection of materials genome engineering data,this paper proposes a method for copyright protection of materials genome engineering data based on zero-watermarking technology.First,the important attribute values are selected from the materials genome engineering database;then,use the method of remainder to group the selected attribute values and extract eigenvalues;then,the eigenvalues sequence is obtained by the majority election method;finally,XOR the sequence with the actual copyright information to obtain the watermarking information and store it in the third-party authentication center.When a copyright dispute requires copyright authentication for the database to be detected.First,the zero-watermarking construction algorithm is used to obtain an eigenvalues sequence;then,this sequence is XORed with the watermarking information stored in the third-party authentication center to obtain copyright information to-be-detected.Finally,the ownership is determined by calculating the similarity between copyright information to-be-detected and copyright information that has practical significance.The experimental result shows that the zero-watermarking method proposed in this paper can effectively resist various common attacks,and can well achieve the copyright protection of material genome engineering database.

Detecting Phishing Using a Multi-Layered Social Engineering Framework

As businesses develop and expand with a significant volume of data,data protection and privacy become increasingly important.Research has shown a tremendous increase in phishing activities during and after COVID-19.This research aimed to improve the existing approaches to detecting phishing activities on the internet.We designed a multi-layered phish detection algorithm to detect and prevent phishing applications on the internet using URLs.In the algorithm,we considered technical dimensions of phishing attack prevention and mitigation on the internet.In our approach,we merge,Phishtank,Blacklist,Blocklist,and Whitelist to form our framework.A web application system and browser extension were developed to implement the algorithm.The multi-layer phish detector evaluated ten thousandURLs gathered randomly from the internet(five thousand phishing and five thousand legitimate URLs).The system was estimated to detect levels of accuracy,true-positive and false-positive values.The system level accuracy was recorded to be 98.16%.Approximately 49.6%of the websites were detected as illegitimate,whilst 49.8%were seen as legitimate.

Analysis of Construction Technology for River Regulation and Bank Protection in Water Conservancy Projects

There are many problems and deficiencies in traditional bank protection methods,which cause certain damage to the ecological environment of river channels.Recently,the issues of river management,improving bank protection technology,formulating reasonable construction measures,and ensuring the smooth and efficient implementation of construction have been receiving increasing attention.

Interface Engineering of NixSy@MnOxHy Nanorods to Efficiently Enhance Overall-Water-Splitting Activity and Stability

Exploring highly active and stable transition metal-based bifunctional electrocatalysts has recently attracted extensive research interests for achieving high inherent activity, abundant exposed active sites, rapid mass transfer, and strong structure stability for overall water splitting. Herein, an interface engineering coupled with shell-protection strategy was applied to construct three-dimensional(3D) core-shell NixSy@MnOxHy heterostructure nanorods grown on nickel foam(NixSy@MnOxHy/NF) as a bifunctional electrocatalyst. NixSy@MnOxHy/NF was synthesized via a facile hydrothermal reaction followed by an electrodeposition process. The X-ray absorption fine structure spectra reveal that abundant Mn-S bonds connect the heterostructure interfaces of N ixSy@MnOxHy, leading to a strong electronic interaction, which improves the intrinsic activities of hydrogen evolution reaction and oxygen evolution reaction(OER). Besides, as an efficient protective shell, the MnOxHy dramatically inhibits the electrochemical corrosion of the electrocatalyst at high current densities, which remarkably enhances the stability at high potentials. Furthermore, the 3D nanorod structure not only exposes enriched active sites, but also accelerates the electrolyte diffusion and bubble desorption. Therefore, NixSy@MnOxHy/NF exhibits exceptional bifunctional activity and stability for overall water splitting, with low overpotentials of 326 and 356 mV for OER at 100 and 500 mA cm^(–2), respectively, along with high stability of 150 h at 100 mA cm^(–2). Furthermore, for overall water splitting, it presents a low cell voltage of 1.529 V at 10 mA cm^(–2), accompanied by excellent stability at 100 mA cm^(–2) for 100 h. This work sheds a light on exploring highly active and stable bifunctional electrocatalysts by the interface engineering coupled with shell-protection strategy.

Principle and engineering application of pressure relief gas drainage in low permeability outburst coal seam

With the increase in mining depth, the danger of coal and gas outbursts increases.In order to drain coal gas effectively and to eliminate the risk of coal and gas outbursts, we used a specific number of penetration boreholes for draining of pressure relief gas.Based on the principle of overlying strata movement, deformation and pressure relief, a good effect of gas drainage was obtained.The practice in the Panyi coal mine has shown that, after mining the C11coal seam as the protective layer, the relative expansion deformation value of the protected layer C13 reached 2.63%, The permeability coefficient increased 2880 times, the gas drainage rate of the C13 coal seam increased to more than 60%, the amount of gas was reduced from 13.0 to 5.2 m3/t and the gas pressure declined from 4.4 to 0.4 MPa, which caused the danger the outbursts in the coal seams to be eliminated.The result was that we achieved a safe and highly efficient mining operation of the C13 coal seam.

Coating Protection for Production Facilities of Offshore Oil Fields

This paper describes coating protection of production facilities of offshore oil fields based on the practice of development of Bohai Offshore Oil Field, with focus laid on the selection of coating systems, surface preparation, coating application, as well as coating inspection for four types of major production facilities.

Barriers and Challenges to the Sustainability Requirements Implementation in Public Procurement of Engineering Works and Services

The environmental damage arising from the construction and engineering services was responsible for the appearance of several norms and resolutions regulating and directing the sector’s performance. In this article, we research how professionals with experience in public bids assess the difficulty degree of the implementation of those requirements and how they assess the environmental legislation regarding the protection and conservation of the environment, impact on costs, deadlines and the solution to environmental problems. The results show that industry professionals consider as “high” the level of difficulty to implement the addressed sustainability requirements, and that the Brazilian environmental legislation does not comply with its environmental protection role, increases the possibility of delays and costs of projects and services and hampers the emergence of solutions that could solve environmental problems.

On the Criminal Law Protection of the Marine Ecological Environment

With the continuous and rapid development of the country’s economy and society,it has greatly promoted the leap of the marine economy and brought more severe challenges and tests to the protection of marine ecological environment.How to effectively measure the criminal law protection of the marine ecological environment and take effective measures Measures to deepen the effects of marine ecological environmental protection have become one of the focus topics of widespread concern in the industry.Based on this,this article first introduces the protection of marine ecological interests in China’s criminal law,analyzes the necessity of adjusting the ecological environment in criminal law,and discusses the deficiencies in China’s marine legal system and combines relevant practical experience to improve the marine environment.Various angles and aspects,such as laws and regulations related to resource crimes,put forward the basic approach to strengthen the criminal law protection of the marine ecological environment,and hope to help the practice of related work.

Research on Innovation of Engineering Project Management Mode and Intelligent Management

In order to realize the standardization and normalization of environmental protection project management.This paper uses the literature method to study the current status of the existing project management mode,and points out the problems:lack of a sound project management system,insufficient information application of project management,and unclear decentralization in project management;on this basis,this paper proposes optimization strategies from the aspects of perfecting the engineering project management system,clarifying the allocation of project management authority,and strengthening the construction of engineering project management information.And put forward the future development trend of project engineering management,on the basis of two mainstream management modes of BOT(Build-Operate-Transfer)and EPC(Engineering Procurement Construction),build a standardized project management platform to achieve intelligent management.Realize intelligent management of engineering project management to achieve standardization and standardization,greatly improving the efficiency of project management.

Technical Analysis and Improvement of the Pedestrian Safety Protection of a Car Hood

The pedestrian protection technology must be used in automotive design if China-made automotives want to compete and grow strong in the world in the future. In this paper, a CAE simulation analysis is made for a domestic sedan car hood to check whether it meet the pedestrian safety protection laws and regulations. Results show that the original car cannot meet the demands of the rules. In order to meet the standards of the pedustrian protection rules, the car hood should undergo structural improvements. Tested again by CAE simulation analysis, the car after a series of improved design can reached the 3-star class EuroNCAP（ Euro New Car Assessment Program）standard of the car pedestrian safety protection laws and regulations.

Design Strategy of Emergency Pools at Source Water Protection Areas

The pollution problem arising from the flushing of initial rainwater and wastewater from accidents while transporting dangerous goods to source water protection areas needs to be solved as soon as possible.Therefore,the design of corresponding environmental protection measures should be considered in the engineering design stage.It is necessary to analyze the specific work in combination with engineering examples.Under this background,this paper first briefly expounds the precautions in accident risk analysis and the design of tank capacity and tank body.Finally,by analyzing actual cases,this paper systematically studies the design strategy of emergency pool in source water protection area,hoping to provide new development ideas for the upgrading of relevant work.

钻井利器的故事之“护壁堵漏材料”

近年来,作为入地最为关键手段的钻探所面临的地层越来越复杂,钻孔垮塌、掉块、缩径和超径等事故发生概率增加,严重制约了钻探工程质量与效率的提升。护壁堵漏材料是钻探工程不可或缺的关键性工程材料,护壁堵漏技术则是保证钻进工作安全、快速以及持续进行的重要技术环节,是复杂地层钻孔处理的主要内容。本文从科普的角度介绍了护壁堵漏材料的基本概念与组成、冲洗液护壁堵漏作用、水泥基材料护壁堵漏作用、护壁堵漏材料的进一步发展空间等,以期加深对护壁堵漏材料的认识,促进新型护壁堵漏材料的研发和应用。

航空发动机电子控制器的高强辐射场干扰及防护

针对航空发动机电子控制器(EEC)易受高强辐射场(HIRF)干扰问题,以ZF-M600型EEC为研究对象,通过三维电磁仿真软件CST对EEC建模并进行平面波辐照仿真,模拟HIRF对EEC的干扰效应,仿真结果表明,HIRF可以通过孔缝耦合进入EEC内部并在腔体内部产生谐振,谐振频率处电场强度显著增加。依据RTCA DO-160G在400 MHz~4 GHz开展EEC辐射敏感度试验,试验结果表明:EEC失效频点为2.40 GHz和3.48 GHz,敏感模块为模拟量输入输出模块,敏感现象为模拟量数据丢失。EEC失效频点与谐振频率接近,说明EEC失效与腔体谐振有关,在EEC内部贴装吸波材料并进行仿真,分析吸波材料的放置方式和厚度对EEC谐振电磁干扰强度的影响,仿真结果表明,贴装吸波材料可以有效抑制谐振电磁干扰。

化工安全与环保课程电化学腐蚀原电池综合教学实验

本文探讨化工安全与环保课程实验教学的背景及其教育重要性,并描述课程团队如何有效利用武汉工程大学“三实一创”模式进行教学。以“电化学腐蚀原电池综合教学实验”为例,文章分析实验教学的应用和效果,总结教学成果,并对化工安全与环保领域的潜在实验教学应用提出展望,为该领域的教学实践提供理论和实证支持。

铁路工程建设环水保风险演化研究

研究目的:随着绿色发展理念的提出,对铁路工程建设环境保护和水土保持提出了更高的要求。为顺利完成工程建设环水保目标,识别铁路工程建设环水保风险因素,建立环水保风险演化的系统动力学模型,并以H铁路工程项目为例进行仿真分析,了解风险演化过程,明确风险防控的重点任务。研究结论:(1)在建设过程中环水保风险呈现先增加后稳定的总体趋势,其中开工建设前期为环水保风险的集中涌现阶段;(2)风险因素取值的变化将对环水保风险产生不同程度的影响,其中环水保专项资金不足改变对环水保风险系统影响最大,人员专业能力不足和环境本底调查不全面次之,施工机械污染大变动对系统影响较小;(3)工程项目引入风险预警机制有利于控制环水保风险,预警值的大小将影响风险防控效果;(4)本研究结果可为工程项目防控环水保风险提供借鉴与参考。

“双碳”目标背景下特种灭火技术课程教学改革研究

为满足“双碳”目标背景下消防工程专业人才培养目标要求,更好跟进国家安全事业建设,文章分析了国内外消防工程专业特种灭火技术的开课情况,总结目前教学痛点问题,建立包括“课程教学”“实践环节”“成绩考核”在内的特种灭火技术课程教学体系,并提出“优化授课模式”“更新教学工具”和“建立课程质量评价机制”等教学改革策略,为进一步推动消防工程专业体系建设提供参考与借鉴。

新工科视域下制药环保人才培养模式的探究

基于新工科环境类专业对应用型人才和创新型人才的培养要求,以及制药行业绿色可持续发展的人才需要,建立了一套“新工科”视域下制药环保人才培养模式。以问题和成果为导向,立足新理念,体现时代性和创新性,完善人才培养方案、优化课程体系、创新实践教学等,以期培养具有前瞻性和引领力的创新型人才,更好地服务于地方经济发展。

面向火电厂煤粉尘浓度的预测评估算法的研究

火力发电的主要能源来自煤炭,而由于燃煤发电过程中产生的煤尘扩散是引起火电厂粉尘爆炸风险和尘肺职业病的主要根源之一,因此必须进行实时有效的检测和控制。当前粉尘检测方法仅使用单一的粉尘质量浓度指标来评估粉尘污染整体状况,缺乏对多种复合因素影响的考量,依靠单一阈值设定进行报警,易出现误报、漏报等现象,以及忽略粉尘爆炸这一重要事故场景,不能建立粉尘污染全面客观的评价方法。研究建立了一种粉尘质量浓度预测模型,基于金豺优化算法对极限学习机的最优初始权重进行寻优,再使用极限学习机对样本数据进行训练学习,提高神经网络模型的精度,可较为准确地预测30 min以内任意时间间隔的粉尘质量浓度,并将现场数据及模拟仿真数据与建立的粉尘质量浓度预测模型进行对比分析。结果显示:建立的粉尘质量浓度预测模型准确度良好,与现场数据及模拟仿真数据对比误差分别为0.72%和2.1%,可加强对火电厂粉尘环境进行预测预警,从而及时采取合理的粉尘控制策略,确保火电厂的生产安全并降低粉尘对作业人员的职业危害。

基于任务驱动法的继电保护综合实训在电气工程毕业实习中的应用

主要研究继电保护综合实训在电气工程及自动化专业毕业实习中的教学创新与实践。首先介绍了继电保护综合实训的背景和意义,详细描述了实施该实训教学的步骤和措施,包括实验设备的配置和连接,实验操作的流程等;其次,提出创新分解式任务驱动法,该方法将继电保护综合实训融入实习环节,使学生深入学习继电保护装置的工作原理和应用技术,提高其实际操作能力、问题解决能力;最后,论述了教学评价标准和实训报告要求。该综合实训教学创新对学生的素质提升和职业发展具有积极影响,对于电气工程及自动化专业毕业实习的改进和发展具有重要参考价值。