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The advantages of using remote sensing technology to monitor forest fires 利用遥感技术监测森林火灾的优势
Pub Date : 2024-05-07 DOI: 10.54254/2755-2721/60/20240830
Qinhe Fang
Forest plays an irreplaceable role in the natural environment and human development. In recent years, forest fires have occurred frequently, causing damage to forests that is difficult to repair. Therefore, it is becoming more and more important to enhance the ability to prevent and monitor forest fires. This paper mainly uses the methods of searching literature and data, analyzing and researching literature to analyze the main causes of forest fires and the related impacts on the environment, personnel, and economy, analyzes and summarizes the advantages of remote sensing technology in the prevention and monitoring of forest fires in detail, and gives examples of remote sensing technology in the field of forest fire monitoring. At the same time, it mentions the matters that need attention in the application of remote sensing technology and puts forward suggestions on the prevention and monitoring of forest fires respectively. Compared with traditional forest fire monitoring methods, this paper finds that remote sensing technology has the advantages of saving manpower and material resources, precision, and high efficiency, and can be widely used in forest fire monitoring. This paper can provide data, literature, and other reference values for remote sensing researchers and forest fire prevention and monitoring workers.
森林在自然环境和人类发展中发挥着不可替代的作用。近年来,森林火灾频发,给森林造成了难以修复的损失。因此,提高森林火灾的预防和监测能力显得越来越重要。本文主要采用检索文献资料、分析研究文献资料的方法,分析了森林火灾发生的主要原因以及对环境、人员、经济等方面造成的相关影响,详细分析和总结了遥感技术在森林火灾预防和监测方面的优势,并举例说明了遥感技术在森林火灾监测领域的应用。同时,还提到了遥感技术应用中的注意事项,并分别对森林火灾的预防和监测提出了建议。与传统的林火监测方法相比,本文发现遥感技术具有节省人力物力、精确、高效等优点,可广泛应用于林火监测。本文可为遥感研究人员和森林防火监测工作者提供数据、文献等参考价值。
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引用次数: 0
Analysis of the current situation and challenges of the popularity of new energy vehicles 新能源汽车普及的现状与挑战分析
Pub Date : 2024-05-07 DOI: 10.54254/2755-2721/60/20240838
Yichu Wang
In order to solve the problem of greenhouse gas emissions generated by burning fossil fuels, countries around the world are actively promoting new energy vehicles. This paper elaborates on the current situation of global new energy vehicles through literature analysis, compares the advantages of new energy vehicles with traditional vehicles, and reveals the challenges faced by new energy vehicles based on this. The results showed that the number of new energy vehicles worldwide is gradually increasing, and the government is actively promoting the widespread application of new energy vehicles. Compared with traditional fuel vehicles, new energy vehicles can effectively solve the exhaust problem of traditional vehicles and save the cost of exhaust gas treatment. However, new energy vehicles face the challenge of a lack of appropriate energy storage systems, efficient Battery management systems and high-performance fast charging facilities. The increase in the popularity of electric vehicles depends on providing incentives and government policies. To upgrade the sales of new energy vehicles, manufacturers must pay attention to diversity and create attractive new energy vehicles.
为了解决化石燃料燃烧产生的温室气体排放问题,世界各国都在积极推广新能源汽车。本文通过文献分析阐述了全球新能源汽车的现状,比较了新能源汽车与传统汽车的优势,并在此基础上揭示了新能源汽车面临的挑战。结果表明,全球新能源汽车的数量正在逐步增加,政府也在积极推动新能源汽车的广泛应用。与传统燃油汽车相比,新能源汽车能有效解决传统汽车的尾气问题,节省尾气处理成本。然而,新能源汽车面临着缺乏合适的储能系统、高效的电池管理系统和高性能快速充电设施的挑战。电动汽车的普及取决于激励措施和政府政策。要提升新能源汽车的销量,制造商必须重视多样性,创造有吸引力的新能源汽车。
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引用次数: 0
Beyond a green future: A comprehensive analysis of electrification in transportation - Opportunities, challenges, and suggestions 超越绿色未来:交通电气化综合分析--机遇、挑战和建议
Pub Date : 2024-05-07 DOI: 10.54254/2755-2721/59/20240817
Ziheng Xiao
The world stands at a pivotal juncture in the realm of transportation, where electrification has emerged as a transformative force reshaping the way of transportation. Electrified transportation offers a promising avenue to address pressing global challenges, including environmental sustainability, energy efficiency, and urban congestion. This comprehensive essay delves into electrified transportation, emphasizing its diverse applications and significance. It begins by dissecting the variety of electrified transportation options, ranging from small-scale personal mobility devices like electric scooters and electric bicycles to large-scale public transportation vehicles such as electric buses and trains. The technical aspects, including battery technology, charging infrastructure, and grid integration, are introduced, showcasing their pivotal roles in advancing electrified transportation. The essay highlights the environmental benefits, such as reduced emissions and noise pollution, as well as the economic advantages, including cost savings and job creation. However, it also acknowledges challenges related to resource scarcity, infrastructure development, and regulatory frameworks. The essay concludes with an outlook on the future of electrified transportation, emphasizing emerging technologies and the importance of renewable energy sources and grid integration in achieving sustainable urban mobility.
世界正处于交通领域的关键时刻,电气化已成为重塑交通方式的变革力量。电气化交通为解决环境可持续性、能源效率和城市拥堵等紧迫的全球挑战提供了一条大有可为的途径。这篇综合文章深入探讨了电气化交通,强调了其多样化的应用和意义。文章首先剖析了电气化交通的各种选择,从电动滑板车和电动自行车等小型个人移动设备到电动公交车和电动火车等大型公共交通车辆,不一而足。文章介绍了电池技术、充电基础设施和电网集成等技术方面,展示了它们在推进电气化交通中的关键作用。文章强调了减少排放和噪音污染等环境效益,以及节约成本和创造就业等经济优势。不过,文章也提到了与资源稀缺、基础设施发展和监管框架有关的挑战。文章最后对电气化交通的未来进行了展望,强调了新兴技术以及可再生能源和电网整合在实现可持续城市交通方面的重要性。
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引用次数: 0
Detection of food harmful substances based on electrochemical biosensors 利用电化学生物传感器检测食品中的有害物质
Pub Date : 2024-05-07 DOI: 10.54254/2755-2721/59/20240800
Jiaqi Luo
Food safety is related to everyone's health and life, so it is crucial to establish appropriate food systems and infrastructure, and develop efficient instruments for detecting food contaminants. Nowadays, many advanced detection technologies have emerged, playing a huge role in food safety testing, such as chromatographic analysis, spectral analysis, and electrochemical analysis. Among them, electrochemical biosensors have the advantages of superior selectivity, high sensitivity, convenient operation, low cost, and fast response, which are expected to develop into portable instruments for on-site rapid detection. Significant progress has been made in the electrochemical detection of food contaminants through the combination of nanotechnology and intelligent technology in recent years. This research summarizes the advancement of electrochemical biosensing technology for the detection of pesticides, heavy metals, illegal additives and mycotoxin by discussing the analytes, electrode materials, modification techniques, methods and detection limits for electrochemistry. Finally, the future development trends of the technology are discussed.
食品安全关系到每个人的健康和生命,因此,建立适当的食品系统和基础设施,开发高效的食品污染物检测仪器至关重要。如今,许多先进的检测技术已经出现,在食品安全检测中发挥着巨大作用,如色谱分析、光谱分析和电化学分析等。其中,电化学生物传感器具有选择性好、灵敏度高、操作方便、成本低、响应速度快等优点,有望发展成为现场快速检测的便携式仪器。近年来,通过纳米技术和智能技术的结合,食品污染物的电化学检测取得了重大进展。本研究通过讨论电化学的分析物、电极材料、改性技术、方法和检测限,总结了用于检测农药、重金属、非法添加物和霉菌毒素的电化学生物传感技术的进展。最后,还讨论了该技术的未来发展趋势。
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引用次数: 0
Design logic of post-industrial landscape structure based on Metaphor-Deconstruction-Empowerment: A case study of the Truss Red Gallery in Hebei 基于隐喻-解构-赋权的后工业景观结构设计逻辑:河北桁架红廊案例研究
Pub Date : 2024-05-07 DOI: 10.54254/2755-2721/59/20240803
Zi'ang Zheng
The cultural memory of the formation of urban culture in the post-industrial era has driven the development of post-industrial landscapes. Post-industrial culture needs to be conveyed through functional spaces, and among various functional spaces within post-industrial landscapes, post-industrial landscape structures hold significant research value. Through a literature review, three main issues in current research on post-industrial landscape structures have been identified: disputes regarding design styles, scattered design and analysis logic, and the lack of specific case-based analyses. Therefore, this study introduces the Metaphor-Deconstruction-Empowerment (MDE) design logic and utilizes the Truss Red Gallery (TRG) in Caofeidian, Hebei, as a research subject for specific analysis, thus addressing these three research gaps. In the analysis process, this study provides specific analyses of the metaphors reflected in TRG's design symbol language and exterior colours. It also examines the deconstruction manifested in the overall space and design details. Furthermore, it analyzes the empowerment showcased in the expansion of architectural space functions, the application of parametric design techniques, and the use of green and low-carbon technologies. Finally, this study conducts an overall logic analysis of the MDE design logic in TRG's design and, in conjunction with the actual construction process of TRG, provides insights into future research directions for the MDE design logic.
后工业时代城市文化形成的文化记忆推动了后工业景观的发展。后工业文化需要通过功能空间来传达,而在后工业景观的各种功能空间中,后工业景观结构具有重要的研究价值。通过文献综述,我们发现目前关于后工业景观结构的研究主要存在三个问题:设计风格存在争议、设计和分析逻辑分散、缺乏具体案例分析。因此,本研究引入隐喻-解构-赋权(MDE)设计逻辑,以河北曹妃甸红色桁架长廊(TRG)为研究对象进行具体分析,从而弥补这三个研究空白。在分析过程中,本研究对 TRG 的设计符号语言和外观色彩所体现的隐喻进行了具体分析。本研究还探讨了在整体空间和设计细节中体现的解构。此外,本研究还分析了建筑空间功能的扩展、参数化设计技术的应用以及绿色和低碳技术的使用所体现的赋权。最后,本研究对 TRG 设计中的 MDE 设计逻辑进行了整体逻辑分析,并结合 TRG 的实际建设过程,为 MDE 设计逻辑的未来研究方向提供了启示。
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引用次数: 0
Analysis on technical challenges and prospects of electric aircraft 电动飞机的技术挑战和前景分析
Pub Date : 2024-05-07 DOI: 10.54254/2755-2721/59/20240815
Andrew Y. Chen
Electric aviation has become a focal point in addressing environmental concerns within the aviation industry, while the implementation of all-electric aviation is still fraught with difficulties. This paper offers a comprehensive analysis of electric aviation, encompassing critical aspects like energy density, battery technology, electric motor design, safety considerations, and economic impacts. The paper discusses the pivotal role of energy density, which significantly influences the performance and range of electric aircraft. Further, battery technology advancements are emphasized, aiming to overcome existing limitations. The paper also scrutinizes electric motor design, highlighting innovations like high-temperature superconductors and innovative permanent magnet configurations. Safety concerns related to electric aviation components, such as electronic switches and power electronic converters, are also discussed. Additionally, the paper evaluates the economic aspects, shedding light on potential cost savings and financial challenges, ultimately serving as a valuable resource for researchers, policymakers, and industry stakeholders navigating the evolving landscape of electric aviation in the pursuit of sustainable air travel. The paper seeks to offer valuable perspectives on the present status of electric aviation.
电动航空已成为航空业解决环境问题的焦点,而全电动航空的实施仍充满困难。本文对电动航空进行了全面分析,包括能量密度、电池技术、电机设计、安全考虑和经济影响等关键方面。本文讨论了能量密度的关键作用,它对电动飞机的性能和航程有重大影响。此外,论文还强调了电池技术的进步,旨在克服现有的局限性。论文还仔细研究了电机设计,重点介绍了高温超导体和创新永磁配置等创新技术。此外,还讨论了与电子开关和电力电子转换器等电动航空组件有关的安全问题。此外,本文还对经济方面进行了评估,阐明了潜在的成本节约和财务挑战,最终为研究人员、政策制定者和行业利益相关者提供了宝贵的资源,帮助他们在追求可持续航空旅行的过程中驾驭不断发展的电动航空。本文旨在为电动航空的现状提供有价值的观点。
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引用次数: 0
Properties of stainless steel and its application in construction 不锈钢的特性及其在建筑中的应用
Pub Date : 2024-05-07 DOI: 10.54254/2755-2721/59/20240748
Chenhan Ding
Stainless steel, an alloy of iron and chromium with the inclusion of other elements, has gained significant prominence in the construction industry due to its remarkable properties such as corrosion resistance, high strength, good durability, and aesthetic quality. In other words, its unique mechanical, chemical, and aesthetic properties make it a valuable material applied in the construction field. Through case studies, this paper provides a comprehensive analysis of the diverse applications of stainless steel in construction, encompassing its structural, architectural, and functional uses. According to the analysis, it can be concluded that stainless steel is well-performed in resisting corrosion and improving structural performance. Due to these properties, stainless steel is widely used in the architecture of different countries. However, there are still some challenges for it to overcome, including the high production costs, poor thermal conductivity, and large weight. Moreover, it is easy to rust after a long time exposure to chemicals such as chloride and sulfide. Therefore, it is necessary to further optimize stainless steel from various aspects.
不锈钢是由铁和铬以及其他元素组成的合金,因其耐腐蚀、强度高、耐用性好、美观大方等显著特性,在建筑业中占有重要地位。换句话说,其独特的机械、化学和美学特性使其成为建筑领域的重要材料。本文通过案例研究,全面分析了不锈钢在建筑领域的各种应用,包括其结构、建筑和功能用途。分析结果表明,不锈钢在抗腐蚀和改善结构性能方面表现出色。基于这些特性,不锈钢被广泛应用于不同国家的建筑中。然而,不锈钢仍有一些难题需要克服,包括生产成本高、导热性差、重量大等。此外,不锈钢在长时间接触氯化物和硫化物等化学物质后容易生锈。因此,有必要从多方面进一步优化不锈钢。
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引用次数: 0
The impact of interest rate uncertainty on renewable energy investments: Compared with conventional energy investments 利率不确定性对可再生能源投资的影响:与传统能源投资相比
Pub Date : 2024-05-07 DOI: 10.54254/2755-2721/60/20240840
Yanjie Chen
In contrast to other types of energy investments, governments often use long-term power purchase agreements (PPAs), subsidy policies, etc., to lock in returns on renewable energy investments. To some extent, these initiatives ensure that renewable energy investment has a fixed future cash flow. The publics demand for an increase in the proportion of renewable energy also forces the government to maintain an annual investment in renewable energy. However, it remains uncertain whether peoples willingness to invest would not be severely affected, and whether renewable energy investment volumes are uniquely robust in the face of financial uncertainty. In this paper, linear regression method is used to analyse the impact of short-term interest rate uncertainty on renewable/conventional energy investment, and covariance analysis is used to test whether these impacts are significantly different. The data indicate that short-term interest rate uncertainty has a significant negative impact. Investment in both types of energy shrinks rapidly in the face of high interest rate uncertainty. No obvious stability is found on renewable energy investment volume in the face of short-term interest rate uncertainty.
与其他类型的能源投资相比,政府通常采用长期购电协议 (PPA)、补贴政策等来锁定可再生能源投资的回报。这些举措在一定程度上确保了可再生能源投资在未来有固定的现金流。公众对提高可再生能源比例的要求也迫使政府保持每年对可再生能源的投资。然而,人们的投资意愿是否不会受到严重影响,可再生能源的投资量在金融不确定性面前是否具有独特的稳健性,这些都还是未知数。本文采用线性回归法分析短期利率不确定性对可再生能源/常规能源投资的影响,并采用协方差分析法检验这些影响是否存在显著差异。数据表明,短期利率不确定性具有显著的负面影响。面对高利率的不确定性,两种能源的投资都会迅速萎缩。面对短期利率的不确定性,可再生能源的投资额没有明显的稳定性。
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引用次数: 0
Recovery and reuse of thermosetting carbon fibre reinforced composites 热固性碳纤维增强复合材料的回收和再利用
Pub Date : 2024-05-07 DOI: 10.54254/2755-2721/60/20240859
Zhiwei Zhang
With the widespread application of carbon fibre composites in sectors such as automotive, aerospace, and construction, recycling and reusing these materials have become crucial for reducing environmental impact and resource waste. This article summarises the potential of recycled carbon fibres in additive manufacturing by describing the main techniques, tools, and benefits and drawbacks of mechanical, thermal, and chemical recycling of carbon fibre composites. Notably, oxidation in air at 400450C for 15-20 minutes can greatly improve the tensile characteristics of thermally treated carbon fibres, offering promise for thermal recycling. In terms of chemical recycling, using recyclable subcritical and supercritical fluids can improve carbon fibre recovery rates and result in smoother-surfaced, higher-performing fibres. Additionally, recycled carbon fibres show potential in additive manufacturing due to their lightweight, high strength, and high stiffness. The purpose of this study is to accelerate the widespread use of carbon fibre composites across industries by providing an overview of carbon fibre recycling methods. Research and innovation in this field are crucial for sustainability and the circular economy.
随着碳纤维复合材料在汽车、航空航天和建筑等领域的广泛应用,回收和再利用这些材料已成为减少环境影响和资源浪费的关键。本文通过介绍碳纤维复合材料的主要技术、工具以及机械、热和化学回收的利弊,总结了回收碳纤维在增材制造中的潜力。值得注意的是,在 400450 摄氏度的空气中氧化 15-20 分钟,可大大改善热处理碳纤维的拉伸特性,为热回收带来了希望。在化学回收方面,使用可回收的亚临界和超临界流体可以提高碳纤维的回收率,并生产出表面更光滑、性能更高的纤维。此外,回收的碳纤维由于重量轻、强度高、刚度大,在增材制造中显示出潜力。本研究旨在通过概述碳纤维回收方法,加快碳纤维复合材料在各行各业的广泛应用。该领域的研究和创新对于可持续发展和循环经济至关重要。
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引用次数: 0
Study on seismic response reduction of high-rise building 降低高层建筑地震反应的研究
Pub Date : 2024-05-07 DOI: 10.54254/2755-2721/60/20240854
Zhiqi Feng
With the needs of social development, the importance of high-rise building construction has become increasingly obvious. The safety of high-rise buildings, especially the safety under earthquakes, has always been an important problem. This paper collates and summarizes a large number of research results related to seismic resistance and isolation of high-rise buildings, and obtains the commonly used seismic resistance and isolatiors as well as improvement measures and possible directions for future development. Currently, commonly used methods and improvement measures mainly focus on changing the material, form and distribution position of the isolators, changing the energy consumption principle and distribution position of the dampers, and mixing the isolators and the damping device. A possible future research direction is to improve the soil layer near the foundation of high-rise buildings, such as adding artificial materials to improve its weakening effect on seismic waves. Research on the seismic resistance and isolators of high-rise buildings will help high-rise buildings to be used more reliably and rationally in the future, thereby fully realizing the social value of high-rise buildings.
随着社会发展的需要,高层建筑建设的重要性日益凸显。高层建筑的安全性,尤其是地震安全性一直是一个重要问题。本文整理和总结了大量与高层建筑抗震和隔震相关的研究成果,得出了常用的抗震和隔震方法以及改进措施和未来可能的发展方向。目前,常用的方法和改进措施主要集中在改变隔震器的材料、形式和分布位置,改变阻尼器的耗能原理和分布位置,以及将隔震器和阻尼装置混合使用等方面。未来可能的研究方向是对高层建筑地基附近的土层进行改良,如添加人工材料以改善其对地震波的削弱作用。对高层建筑抗震和隔震装置的研究将有助于高层建筑在未来得到更可靠、更合理的使用,从而充分实现高层建筑的社会价值。
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引用次数: 0
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Applied and Computational Engineering
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