检索结果-内蒙古大学图书馆

Mechanistic insights into CO2 photoreduction to formic acid using ZnO catalysts

Chemical engineering Research and Design 2025年 218卷 664-673页

作者： Astuti, Andi Rina Ayu Ariono, Danu Wenten, I. Gede Sasongko, Dwiwahju Saputera, Wibawa Hendra Kurnia, Kiki Adi Department of Chemical Engineering Faculty of Industrial Technology Universitas Muslim Indonesia Jl. Urip Sumoharjo Km. 05 Makassar90231 Indonesia Department of Chemical Engineering Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Research Center for Nanosciences and Nanotechnology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Research Group on Energy and Chemical Engineering Processing System Department of Chemical Engineering Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Center for Catalysis and Reaction Engineering Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Research Center for New and Renewable Energy Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Center of CO2 Utilization and Flare Gas Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Postgraduate program of Science in Sustainability Faculty of Infrastructure Planning Universitas PERTAMINA Jl. Teuku Nyak Arif Jakarta12220 Indonesia

The conversion of CO2 into formic acid (HCOOH) is vital due to rising atmospheric CO2 levels and the high market value of HCOOH among CO2 utilization products. A photocatalytic technology offers a promising method for this transformation using sustainable energy. However, the lack of the exact mechanism of CO2 reduction into HCOOH using heterogeneous catalyst and light energy remains unclear. Therefore, this study explores the reaction pathways validated with experimental data and density functional theory (DFT) calculation. Based on the experiment, ZnO semiconductor catalysts achieved the highest formic acid production, with a concentration of 345.44 µmol/L·gcat after 4 hours of operation at a gas flow rate of 800 mL/min. Among the four proposed mechanisms, CO₂ photoreduction to HCOOH follows the Eley-Rideal adsorption mechanism, where only reactant of 2H⁺ undergoes chemisorption, while CO₂ remains physisorbed. Additionally, HCOOH exhibits strong adsorption on ZnO surface, as confirmed by experimental data and adsorption energy calculations. DFT calculations using CRYSTAL14 and the B3LYP method support this finding. The weak physisorption energy (less than 0.5 eV) allows CO2 to undergo direct reactions on the catalyst surface. This study elucidates the role of each component in enhancing CO2 photoreduction to HCOOH and provides a foundation for further research on CO2 utilization. © 2025

关键词： Local density approximation

来源：评论

学校读者我要写书评

暂无评论

Wildfire Risk Mitigation through Systems Analysis of the Planetary Emergency

ASCE Open: Multidisciplinary Journal of Civil Engineering

引用

ASCE Open: Multidisciplinary Journal of Civil engineering 2024年第1期2卷

作者： Lambert, James H. Dorn, R. Ranger Ayyub, Bilal M. Barletta, William A. Organek, John F. Piras, Marco Gunn, Megan E. Zichichi, S. Fabrizio Center for Risk Management of Engineering Systems Dept. of Systems and Information Engineering Univ. of Virginia CharlottesvilleVA22904 United States Electric Infrastructure Security Council Oak ViewCA93022 United States Center for Technology and Systems Management Dept. of Civil and Environmental Engineering Univ. of Maryland College ParkMD20742 United States Dept. of Commerce Applied Economics Office National Institute of Standards and Technology GaithersburgMD20899 United States International Joint Research Center for Resilient Infrastructure Tongji Univ. Shanghai China Dept. of Physics Massachusetts Institute of Technology CambridgeMA02139 United States Program Planning & Operational Architecture Electric Infrastructure Security Council WashingtonDC20002 United States Dept. of Environment Land and Infrastructure Engineering Politecnico di Torino Turin10129 Italy Dept. of Systems and Information Engineering Univ. of Virginia CharlottesvilleVA22904 United States Ettore Majorana Foundation Centre for Scientific Culture Sicily91016 Italy

Recognizing wildfires as a multiscale planetary emergency, this paper describes a systems analysis of technology countermeasures, with special attention to Sicily, California, and several other regions. The paper describes a framework for systems integration of firefighting, satellites, fixed imaging, and aerial vehicles, with mathematical simulation and machine learning, to support both policy mitigations and responses to incidents. The approach includes (1) the characterization of the planetary emergency of wildfires, (2) early identification of dangerous wildfires and means for their control, and (3) reduction of risks to population centers in both rural and urban areas. Societal metrics of success include human health and safety, environment and ecology, critical food and industrial supply chains, geopolitical security, and others. Several technology and policy countermeasures of particular interest are regional fuel management, distributed sensors, computational intelligence, advanced firefighting materials, protocols, and automatic and semiautonomous responses, benefiting from the latest advancements in information technologies including artificial intelligence, machine learning, and others. © 2024 This work is made available under the terms of the Creative Commons Attribution 4.0 International license.

关键词： Risk assessment

来源：评论

学校读者我要写书评

暂无评论

Human activities and forest fires in Indonesia: An analysis of the Bromo incident and implications for conservation tourism

引用

Trees, Forests and People 2024年 15卷

作者： Suhardono, Sapta Fitria, Laili Suryawan, I Wayan Koko Septiariva, Iva Yenis Mulyana, Rachmat Sari, Mega Mutiara Ulhasanah, Nova Prayogo, Wisnu Environmental Sciences Study Program Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Surakarta 57126 Indonesia Department of Environmental Engineering Universitas Tanjungpura Pontianak 78124 Indonesia Department of Environmental Engineering Faculty of Infrastructure Planning Universitas Pertamina Jakarta 12220 Indonesia Department of Natural Resources and Environmental Studies College of Environmental Studies and Oceanography National Dong Hwa University Hualien 97401 Taiwan Civil Engineering Study Program Faculty of Engineering Universitas Sebelas Maret Surakarta 57126 Indonesia Department of Building Engineering Education Universitas Negeri Medan Medan 20221 Indonesia

This study delves into the Bromo magnitude of the fire incident in Indonesia, a notable tourism destination, uncovering significant gaps in knowledge regarding tourist-induced forest fires. We comprehensively analyze the incident's environmental, economic, social, and tourism impacts. Environmentally, the fire caused severe damage to the region's ecosystems, upsetting ecological balances and diminishing air quality. This has far-reaching effects on flora, fauna, and the sustainability of natural resources. Forest fires release a significant amount of pollutants into the air, including carbon dioxide, carbon monoxide, particulate matter, and other harmful compounds. These pollutants can significantly degrade air quality, leading to health issues for humans and animals. The forest fire in the Bromo region of Indonesia had a profound impact, both economically and environmentally. The closure of the Bromo Tengger Semeru National Park drastically reduced tourism, leading to an 80 % drop in hotel occupancy and severe losses for local businesses like jeep rentals, eateries, and souvenir shops. Economically, this resulted in a significant decrease in Non-Tax State Revenue. Environmentally, the fire destroyed over 50 hectares of land, severely damaging the national park's ecosystems and affecting biodiversity. The smoke and heat from the fire also led to poor air quality and potential health risks for local residents, as well as adverse effects on nearby agriculture, increasing stress and anxiety in the community. The study emphasizes the urgent need for stringent regulations, effective community engagement, and educational initiatives in forest conservation areas, particularly those attracting tourists. Our findings offer critical insights for policymakers, local authorities, and stakeholders in the tourism sector, highlighting the necessity of balancing environmental protection with the growth of the global travel industry. © 2024 The Author(s)

关键词： Bromo incident Community engagement Conservation tourism Ecological consequences Environmental protection Forest fires Human-induced fires

来源：评论

学校读者我要写书评

暂无评论

Multidimensional factors of community behavioral responses and implications to landfill closures: A case study in Yogyakarta, Indonesia

引用

Environmental Advances 2024年 16卷

作者： Suhardono, Sapta Fitria, Laili Suryawan, I Wayan Koko Ulhasanah, Nova Sari, Mega Mutiara Septiariva, Iva Yenis Prayogo, Wisnu Environmental Sciences Study Program Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Surakarta 57126 Indonesia Department of Environmental Engineering Universitas Tanjungpura Pontianak 78124 Indonesia Department of Environmental Engineering Faculty of Infrastructure Planning Universitas Pertamina Jakarta 12220 Indonesia Department of Natural Resources and Environmental Studies College of Environmental Studies and Oceanography National Dong Hwa University Taiwan Hualien 97401 Taiwan Civil Engineering Study Program Faculty of Engineering Universitas Sebelas Maret Surakarta 57126 Indonesia Department of Building Engineering Education Universitas Negeri Medan Medan Indonesia

This study examines how a community in Yogyakarta, Indonesia reacts to the closing of local landfills. It identifies different groups within the community, such as those primarily concerned with health and aesthetics, those exhibiting proactive behaviors, and those acutely aware of the broader impacts. These groups show varying responses to the closures, from adjusting personal habits to calling for policy changes. The findings suggest a need for policies that are flexible and considerate of the community's diverse priorities and behaviors. In conclusion, landfill closures have complex effects on communities that require a thoughtful analysis. The study shows that personal choices and proactive behaviors are crucial in encouraging community involvement in waste management. However, there's a hesitancy to pay more for such services, indicating a gap in community responsibility and environmental stewardship. The research advocates for sustainable waste management solutions that are aligned with the community's values and behaviors, urging policymakers to design inclusive and sustainable systems for waste management that support the long-term well-being of both the community and the environment. © 2024

关键词： Behavioral responses Community perceptions Indonesia Landfill closures Yogyakarta

来源：评论

学校读者我要写书评

暂无评论

Experimental and numerical characterization of EPS using elastoplastic response in ABAQUS

引用

Materials Today: Proceedings 2023年

作者： Yasser M. Mater Aya M. El Shahat Sherif S. AbdelSalam Civil Infrastructure Engineering and Management Program School of Engineering and Applied Science Nile University Giza 12588 Egypt

Expanded polystyrene (EPS) is an attractive research area in the field of construction engineering. Its ultra-lightweight properties, high compressibility , and environmental-friendly characteristics make it ideal for the use as a compressible backfilling material for embankments, a filling material behind retaining walls and many other applications. Consequently, the compressive strength is one of the important properties for engineers. To this end, this paper aims to create a simplified elastoplastic model for the uniaxial unconfined compressive behavior of EPS. The developed model can predict the plastic stress–strain behavior of EPS using only its elastic modulus . A mathematical curve fitting model was developed by testing several 50 × 50 × 50 mm cube specimens under the test setup of a 50 kN uniaxial loading machine. Then, the proposed model was validated through the elastoplastic behavior in ABAQUS, by creating a finite element model for the described test setup. It was found that the proposed experimental test setup resulted in reasonable stress–strain behavior for EPS, similar to that indicated in the literature. Also, the presented mathematical model can accurately predict the stress–strain behavior of EPS, which was validated using the elastoplastic response in ABAQUS.

关键词：

来源：评论

学校读者我要写书评

暂无评论

How 5G Applications are Reshaping the Commercial District: the Relevance of Technologies to Consumer Experiences

How 5G Applications are Reshaping the Commercial District: t...

引用

IEEE International Conference on Consumer Electronics-Taiwan (ICCE-TW)

作者： Chia-Yi Liao Tien-Yin Chou Chih-Chung Kao Ph.D. Program for Infrastructure Planning and Engineering Feng Chai University Taichung Taiwan R.O.C College of Construction and Development Feng Chai University Taichung Taiwan R.O.C Chairman of the Board Exceed Strategic Consultant Co. Ltd Taichung Taiwan R.O.C

ISBN: (数字)9798350386844

ISBN: (纸本)9798350386851

5G (fifth generation mobile networks) will bring higher capacity, data rates, lower latency, and better service quality. This will bring new opportunities for consumer electronics and shopping areas, making consumer electronics more intelligent, digitalized, and immersive. It will drive the development of new applications and change the design and manufacturing of consumer electronic devices. This study will explore the introduction of innovative 5G service applications, such as high-definition and ultra-low-latency live streaming, augmented reality (AR), and various digital platform constructions, to promote the development of shopping areas. It aims to assist in industry transformation for shopping area development by providing personalized recommendations and discounts through Online Merge Offline (OMO) integrated virtual and physical experiential marketing services. This allows customers to try products in virtual environments.

关键词： Industries 5G mobile communication Statistical analysis Extended reality Virtual environments Museums Manufacturing

来源：评论

学校读者我要写书评

暂无评论

Dem Simulation on the Damage of Sandstone with a Rough Fracture Under True-Triaxial Stress Conditions

SSRN

引用

SSRN 2024年

作者： Zhang, Decheng Liu, Zhiwei Song, Yuqi Huang, Jicheng Wu, Bailin Ranjith, P.G. Perera, M.S.A. Kong, Lie Nie, Wen School of Civil and Transportation Engineering Hebei University of Technology Tianjin China Deep Earth Energy Laboratory Department of Civil Engineering Monash University VIC3800 Australia Jiangsu Leiwei Construction Engineering Co. Ltd. China Railway Shanghai Bureau Group Nanjing210003 China Energy Resources Research Program CSIRO Energy ClaytonVIC3168 Australia Department of Infrastructure Engineering University of Melbourne VIC3010 Australia James Watt School of Engineering University of Glasgow GlasgowG12 8QQ United Kingdom

A numerical study was conducted on the damage behaviors of sandstone specimens with an embedded rough fracture under triaxial stress conditions. The discrete element method was used to study the deformation and cracking characteristics, and the effects of triaxial stress state, fracture width and inclination angle on the mechanical properties were also investigated. The results are as follows: (1) The strength of fractured rock decreased with the increase of fracture width ratio and the yield stress under conventional triaxial stress is higher than those under true triaxial tests with the same mean confinement;(2) For fractured rock models with small width ratios (0.2, 0.4 and 0.6), the strength increases as the fracture angle turning towards the principal stress direction. The shear damaged bond ratio decreased with the increase of confining pressure when [[EQUATION]], while its ratio increased slightly with the fracture angle when[[EQUATION]];(3) For the large-width fractured rock model with a width ratio 1.0, the strength first decreased and then increased with the increasing inclination angle. At inclination angles of 0° and 30°, damage first occurred near fracture surface, then it propagated along the diagonal direction, and the ratios of bond damage caused by tension and shear failure were almost equal. While the shear damaged bond ratio was much higher than that by tension at inclination angles of 60° and 90°. © 2024, The Authors. All rights reserved.

关键词： Sandstone

来源：评论

学校读者我要写书评

暂无评论

Influence of Recycled Glass on Strength Development of Alkali-Activated High-Calcium Fly Ash Mortar

引用

Advances in Materials Science and engineering 2023年第1期2023卷

作者： Damrongwiriyanupap, Nattapong Wongchairattana, Sangsan Phoo-Ngernkham, Tanakorn Petcherdchoo, Aruz Limkatanyu, Suchart Chindaprasirt, Prinya Civil Engineering Program School of Engineering University of Phayao Mae Ka Phayao56000 Thailand Sustainable Construction Material Technology Research Unit Department of Civil Engineering Faculty of Engineering and Technology Rajamangala University of Technology Isan Nakhon Ratchasima30000 Thailand Department of Civil Engineering Faculty of Engineering King Mongkut's University of Technology North Bangkok Bangkok10800 Thailand Department of Civil Engineering Faculty of Engineering Prince of Songkla University Hat Yai Songkla90112 Thailand Sustainable Infrastructure Research and Development Center Department of Civil Engineering Faculty of Engineering Khon Kaen University Khon Kaen40002 Thailand Academy of Science The Royal Society of Thailand Dusit Bangkok10300 Thailand

This article presents the development of green and sustainable mortars using alkali-activated high-calcium fly ash (AAFA) and recycled glass (RG) as part of the fine aggregate. RG was used to replace river sand at dosages of 0%, 25%, 50%, 75%, and 100% by weight. Sodium hydroxide (SH) and sodium silicate (SS) solutions were used as liquid alkaline activators in all mixtures. The AAFA samples were prepared with different liquid-to-binder ratios of 0.6 and 0.7, and the ratio of SS-to-SH was fixed at 2.0. Compressive and flexural strengths were determined at the ages of 7, 28, and 60 days. Test results showed that the compressive and flexural strengths of AAFA mortars declined as RG replacement increased;nevertheless, they increased with curing time. The high Na2O concentration derived from RG and the weak interfacial transition zone of RG are reasons for the decrease in strength development. The optimum percentage replacement of fine aggregates with RG was found at 25%. The 28-day compressive strength of AAFA with 25% RG was 32.5 MPa for L/B ratios of 0.6 and 29.5 MPa for L/B ratios of 0.7, which resulted in a strength index higher than 75% while releasing low CO2. © 2023 Nattapong Damrongwiriyanupap et al.

关键词： Mortar

来源：评论

学校读者我要写书评

暂无评论

The disruptive potential of importance-performance eduruption and transforming consumerism in single-used plastic reduction initiatives

引用

Cleaner and Responsible Consumption 2024年 14卷

作者： Suryawan, I Wayan Koko Fitria, Laili Ulhasanah, Nova Septiariva, Iva Yenis Prayogo, Wisnu Suhardono, Sapta Sari, Mega Mutiara Aji, Angga Dheta Shirajjudin Department of Environmental Engineering Faculty of Infrastructure Planning Universitas Pertamina Jakarta 12220 Indonesia Department of Natural Resources and Environmental Studies College of Environmental Studies and Oceanography National Dong Hwa University Hualien 97401 Taiwan Department of Environmental Engineering Universitas Tanjungpura Pontianak 78124 Indonesia Civil Engineering Study Program Faculty of Engineering Universitas Sebelas Maret Surakarta 57126 Indonesia Department of Building Engineering Education Universitas Negeri Medan Medan Indonesia Environmental Sciences Study Program Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Surakarta 57126 Indonesia Department of Environmental Engineering Brawijaya University Malang 65141 Indonesia

In an era demanding sustainable consumption, the challenge of single-used plastic (SUP) remains significant. This study delves into the transformative capacity of the Importance-Performance Eduruption method to reshape consumerism and encourage SUP reduction. Drawing on binary choice models, we elucidated the determinants influencing students' willingness to participate in SUP reduction initiatives. Beyond the quantitative metrics, the study highlighted the deep-seated influence of educational methods. Applied learning strategies like Problem-Based and Project-Based Learning emerged as influential touchpoints, aligning students with sustainable habits. Simultaneously, the importance-performance analysis revealed areas needing immediate intervention, notably research-oriented methods. Our findings spotlight the influential role education plays in driving sustainable consumer behavior. By integrating importance-performance insights into curriculum planning and broader policy frameworks, stakeholders can more effectively harness the disruptive potential of education to further the goals of Sustainable Development Goal 12 and create a more sustainable future. © 2024 The Authors

关键词： Consumer behavior Educational Transformation Eduruption Importance-performance analysis SDG 12 Single used plastics Sustainable consumption

来源：评论

学校读者我要写书评

暂无评论

DEVELOPMENT of GEOSPATIAL INFORMATION INTEGRATED with BIG DATA to AGRICULTURAL HAZARD MONITORING in WEST JAVA

DEVELOPMENT of GEOSPATIAL INFORMATION INTEGRATED with BIG DA...

引用

2022 Annual Conference, ASPRS 2022

作者： Virtriana, R. Riqqi, A. Anggraini, T.S. Fauzan, K.N. Ihsan, K.T.N. Mustika, F.C. Atmaja, F.W. Suwardhi, D. Harto, A.B. Sakti, A.D. Deliar, A. Soeksmantono, B. Wikantika, K. Remote Sensing and Geographic Information Sciences Research Group Faculty of Earth Sciences and Technology Institut Teknologi Bandung Bandung40132 Indonesia Center for Remote Sensing Institut Teknologi Bandung Bandung40132 Indonesia Center for Spatial Data Infrastructure Institut Teknologi Bandung Bandung40132 Indonesia Master Program of Geodesy and Geomatics Engineering Faculty of Earth Sciences and Technology Institut Teknologi Bandung Jl. Ganesha No.10 Bandung40132 Indonesia Doctoral Program of Geodesy and Geomatics Engineering Faculty of Earth Sciences and Technology Institut Teknologi Bandung Jl. Ganesha No.10 Bandung40132 Indonesia

Food security is highly dependent on three aspects, namely food availability, food access, and food utilization. The availability aspect depends on food supply which is identical to agricultural productivity. West Java Province is the third national rice producer with 16.6%, but West Java Province is the most extensive rice consumer, around 21.1% of the total national rice consumption. Agricultural productivity can decline due to natural hazards such as floods and droughts. Monitoring floods and droughts in paddy fields are necessary to prevent decreased agricultural productivity. This study aims to monitor the rice fields from the dangers of flooding and drought every month. Agricultural hazard monitoring is divided into two parameters, namely static parameters and dynamic parameters. Dynamic parameters are observed every month so that the hazard index is generated on a monthly scale. GIS and Remote sensing data are integrated to perform agricultural hazard modelling. Furthermore, this agricultural hazard modelling results will be strengthened by using big to provide information about an almost real-Time event that can be accessed through the Application program Interface (API) service. This study uses a data mining system from Drone Emprit that performs data mining on Twitter and news portals with machine learning technology (probabilistic classifier) and Natural Learning Process. The results obtained are around 15,000 data from January 1 to November 1, 2021, and 37.9% of them are identified by location based on the city or district level in West Java Province. It is hoped that the policy-maker can consider the area of agricultural land that requires assistance to increase productivity and plan a policy to support agriculture in West Java in the future. © 2022 R. Virtriana et al.

关键词： Agriculture

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：