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SSRN 2024年

作者： Wijayanto, Arif Kurnia Prasetyo, Lilik Budi Hudjimartsu, Sahid Agustian Sigit, Gunardi Hongo, Chiharu Department of Forest Resource Conservation and Ecotourism Faculty of Forestry and Environment IPB University Bogor16680 Indonesia Ronpaku Fellow Tokyo102-0083 Japan Environmental Research Center IPB University Bogor16680 Indonesia Study Program of Information Technology Faculty of Science and Engineering Ibn Khaldun University Bogor16129 Indonesia Regional Office of Food Crops Service West Java Province Cianjur43283 Indonesia Chiba University Chiba263-8522 Japan

Detecting Bacterial Leaf Blight (BLB) in paddy fields is one of the essential issues in Indonesia to prevent losses in rice production. This study reports the effectiveness of textural analysis using drone-acquired data over paddy fields in West Java, evaluating the potential of integrating textural and thermal characteristics. We used drone data combined with machine learning techniques to distinguish different levels of BLB impact. The normalized difference texture index derived from Haralick textural features was used as a predictor. The findings revealed that incorporating textural features enhanced the disease detection accuracy significantly compared with the traditional approach based on spectral indices. The random forest algorithm, which merges texture and vegetation indices, achieved a classification accuracy of 0.984. The proposed method offers a robust, noninvasive solution for BLB disease detection, contributing substantially to safeguarding crop yields and mitigating global food security issues. © 2024, The Authors. All rights reserved.

关键词： Drones

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Quantifying the potential effects of air pollution reduction on population health and health expenditure in Taiwan

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environmental Pollution 2023年第1期336卷 122405页

作者： Roger Chen, Yi-Hsuan Lee, Wan-Chen Liu, Bo-Chen Yang, Po-Chieh Ho, Chi-Chang Hwang, Jing-Shiang Huang, Tzu-Hsuan Lin, Hsien-Ho Lo, Wei-Cheng Department of Environmental Health and Engineering Johns Hopkins University BaltimoreMD United States Institute of Epidemiology and Preventive Medicine College of Public Health National Taiwan University Taipei Taiwan Institute of Environmental and Occupational Health Sciences College of Public Health National Taiwan University Taipei Taiwan Department of Industrial Economics Tamkang University Taipei Taiwan Institute of Statistical Science Academia Sinica Taipei Taiwan AbbVie Inc. North Chicago IL United States Global Health Program College of Public Health National Taiwan University Taipei Taiwan Master Program in Applied Epidemiology College of Public Health Taipei Medical University Taipei Taiwan Taipei Medical University Research Center of Urology and Kidney Taipei Medical University Taipei Taiwan

Air pollution, particularly ambient fine particulate matter (PM2.5) pollution, poses a significant risk to public health, underscoring the importance of comprehending the long-term impact on health burden and expenditure at national and subnational levels. Therefore, this study aims to quantify the disease burden and healthcare expenditure associated with PM2.5 exposure in Taiwan and assess the potential benefits of reducing pollution levels. Using a comparative risk assessment framework that integrates an auto-aggressive integrated moving average model, we evaluated the avoidable burden of cardiopulmonary diseases (including ischemic heart disease, stroke, chronic obstructive pulmonary disease, lung cancer, and diabetes mellitus) and related healthcare expenditure under different air quality target scenarios, including status quo and target scenarios of 15, 10, and 5 μg/m3 reduction in PM2.5 concentration. Our findings indicate that reducing PM2.5 exposure has the potential to significantly alleviate the burden of multiple diseases. Comparing the estimated attributable disease burden and healthcare expenditure between reference and target scenarios from 2022 to 2050, the avoidable disability-adjusted life years were 0.61, 1.83, and 3.19 million for the 15, 10, and 5 μg/m3 target scenarios, respectively. Correspondingly, avoidable healthcare expenditure ranged from US$ 0.63 to 3.67 billion. We also highlighted the unequal allocation of resources and the need for policy interventions to address health disparities due to air pollution. Notably, in the 5 μg/m3 target scenario, Kaohsiung City stands to benefit the most, with 527,368 disability-adjusted life years avoided and US$ 0.53 billion saved from 2022 to 2050. Our findings suggest that adopting stricter emission targets can effectively reduce the health burden and associated healthcare expenditure in Taiwan. Overall, this study provides policymakers in Taiwan with valuable insights for mitigating the negative effe

关键词： Risk perception

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Biomass waste as an alternative source of carbon and silicon-based absorbents for CO2 capturing application

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Chemosphere 2023年 343卷

作者： Suresh, R. Gnanasekaran, Lalitha Rajendran, Saravanan Jalil, A.A. Soto-Moscoso, Matias Khoo, Kuan Shiong Ma, Zengling Halimatul Munawaroh, Heli Siti Show, Pau Loke Departamento de Ingeniería Mecánica Facultad de Ingeniería Universidad de Tarapacá Avda. General Velásquez 1775 Arica Chile University Centre for Research & Development Department of Mechanical Engineering Chandigarh University Punjab Mohali140413 India Department of Chemical Engineering Lebanese American University Byblos Lebanon Centre of Hydrogen Energy Institute of Future Energy Johor UTM Johor Bahru81310 Malaysia Faculty of Chemical and Energy Engineering Universiti Teknologi Malaysia Johor UTM Johor Bahru81310 Malaysia Universidad Autónoma de Chile Chile Department of Chemical Engineering and Materials Science Yuan Ze University Taoyuan Taiwan Centre for Herbal Pharmacology and Environmental Sustainability Chettinad Hospital and Research Institute Chettinad Academy of Research and Education Tamil Nadu Kelambakkam603103 India Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection Wenzhou University Wenzhou325035 China Study Program of Chemistry Faculty of Mathematics and Science Education Universitas Pendidikan Indonesia Jalan Dr. Setiabudhi 229 Bandung40154 Indonesia Department of Chemical Engineering Khalifa University P.O. Box 127788 Abu Dhabi United Arab Emirates Department of Chemical and Environmental Engineering Faculty of Science and Engineering University of Nottingham Malaysia Jalan Broga Selangor Darul Ehsan Semenyih Malaysia

The production of low-cost solid adsorbents for carbon dioxide (CO2) capture has gained massive consideration. Biomass wastes are preferred as precursors for synthesis of CO2 solid adsorbents, due to their high CO2 adsorption efficiency, and ease of scalable low-cost production. This review particularly focuses on waste biomass-derived adsorbents with their CO2 adsorption performances. Specifically, studies related to carbon (biochar and activated carbon) and silicon (silicates and geopolymers)-based adsorbents were summarized. The impact of experimental parameters including nature of biomass, synthesis route, carbonization temperature and type of activation methods on the CO2 adsorption capacities of biomass-derived pure carbon and silicon-based adsorbents were evaluated. The development of various enhancement strategies on biomass-derived adsorbents for CO2 capture and their responsible factors that impact adsorbent's CO2 capture proficiency were also reviewed. The possible CO2 adsorption mechanisms on the adsorbent's surface were highlighted. The challenges and research gaps identified in this research area have also been emphasized, which will help as further research prospects. © 2023 Elsevier Ltd

关键词： Carbon dioxide

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Piezoelectric and triboelectric nanogenerators: Promising technologies for self-powered implantable biomedical devices

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Nano Energy 2024年 119卷

作者： Khan, Arshad Joshi, Ravindra Sharma, Manish Kumar Ganguly, Anindita Parashar, Parag Wang, Ting-Wei Lee, Sangmin Kao, Fu-Cheng Lin, Zong-Hong Department of Biomedical Engineering National Taiwan University Taipei10167 Taiwan International Intercollegiate PhD Program National Tsing Hua University Hsinchu30013 Taiwan Department of Power Mechanical Engineering National Tsing Hua University Hsinchu30013 Taiwan Department of Materials Science and Engineering National Tsing Hua University Hsinchu30013 Taiwan Internet of Senses Research Center National Tsing Hua University Hsinchu30013 Taiwan Department of Biomedical Engineering and Environmental Sciences National Tsing Hua University Hsinchu30013 Taiwan School of Mechanical Engineering Chung-Ang University Seoul06974 Korea Republic of Department of Orthopaedic Surgery Chang Gung Memorial Hospital Taoyuan33305 Taiwan College of Medicine Chang Gung University Taoyuan33302 Taiwan Department of Chemical Engineering National Taiwan University Taipei10167 Taiwan

Implantable biomedical devices (IBDs) have garnered wide-scale attention in recent years due to their enormous contribution to the biomedical sector. However, an uninterrupted and reliable power source has consistently been the primary barrier for IBDs, which is greatly alleviated by batteries. The widespread application of battery-powered IBDs is hindered by several limitations, including bulkiness, limited capacity and shelf-life, and expenditure associated with surgery-based battery recharge/replacement. To address these challenges, state-of-the-art self-powering technologies have emerged, including implantable piezoelectric nanogenerators (iPENGs) and implantable triboelectric nanogenerators (iTENGs). These technologies enable IBDs to operate autonomously by harnessing the minute mechanical movements of internal organs, such as heartbeat, respiration, blood circulation, muscle contraction/relaxation, and lung vibration. This review focuses on the recent advancements in iTENGs and iPENGs for the development of self-powered IBDs with a wide range of applications, including energy harvesting from biomechanical and ultrasound sources and energy storage using batteries and capacitors. This study also explores the extensive sensing applications of IBDs in various areas including cardiac, gastrointestinal, bladder, and ligament-strain monitoring. Finally, therapeutic applications of IBDs, such as nerve stimulation, bone stimulation, cartilage therapy, tissue regeneration, muscle stimulation, drug delivery, and diabetes management are discussed. © 2023 Elsevier Ltd

关键词： Nanogenerators

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Accelerating Electric Vehicle Uptake: Modelling Public Policy Options on Prices and Infrastructure

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SSRN 2021年

作者： Broadbent, Gail Helen Allen, Cameron Ian Wiedmann, Thomas Metternicht, Graciela Isabel Earth and Sustainability Science Research Centre UNSW Sydney NSW2052 Australia Sustainability Assessment Program School of Civil and Environmental Engineering UNSW Sydney NSW2052 Australia School of Computer Science & Engineering Monash Sustainable Development Institute Monash University Melbourne Australia

Transitioning to passenger battery electric vehicles (BEV) can mitigate climate change impacts of road transportation. We develop a novel BEV policy model, nesting it within a national-scale macroeconomic system dynamics model ( iSDG-Australia ) to simulate a suite of policy pathways, underpinned by combinations of price incentive and infrastructure support. Subsidising vehicle purchase price brings forward the price-parity tipping point, rapidly accelerating BEVs’ share of new car sales. However, ongoing complementary charging infrastructure investment is critical to reach 100% new BEV car sales by 2050 in Australia. Despite rapid transition, the fleet we modelled would not achieve net-zero by 2050 due to vehicle longevity;and suddenly ceasing financial incentives could retard BEV sales by a decade. Results suggest emissions reductions are maximised by the fastest transition of the passenger vehicle fleet to BEVs, entailing government policy support for adequate infrastructure deployment and financial incentives to achieve earlier BEV price-parity with fossil-fuelled vehicles. © 2021, The Authors. All rights reserved.

关键词： Public policy

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Evaluation of communal wastewater treatment plant based on technical, institutional, and community participation aspects in South Surabaya 1

Evaluation of communal wastewater treatment plant based on t...

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1st International Conference on science and Technology for environmental Protection, ICSTEP 2018

作者： Purnawanti, E. Oktavitri, N.I. Isnadina, D.R.M. Fitriani, N. Environmental Engineering Study Program Department of Biology Faculty of Science and Technology Universitas Airlangga Indonesia

This study aims to discover the obstacles and provide recommendations on the technical and institutional aspects of the chosen communal WWTP. The methods used in this study were field survey and questionnaire. the data were analyzed using quantitative, qualitative, and SWOT analysis. There are 11 out of 13 communal WWTPs that do not work optimally. The technical obstacle encountered in the operation of the chosen communal WWTPs is the huge building capacity that does not meet the criteria of HRT design. The recommendations for the technical problem include lowering the water level and reducing the number of baffles in communal WWTP. The obstacle faced in the operation of chosen communal WWTPs in terms of institutional and community participation aspects is that the maintenance is only known by few people. The recommendation for the aspects of institutional and community participation is for KPP to arrange a socialization on the maintenance of communal WWTP based on its maintenance module. © 2019 IOP Publishing Ltd.

关键词： Maintenance

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Tailoring Ion Dynamics in Energy Storage Conductors for Ultra-Stable, High-Performance Solid-State Microsupercapacitor Array

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SSRN 2022年

作者： Park, Gaeun Lee, Dawoon Kim, Youngoh Choi, Joonmyung Choi, U. Hyeok Kim, Jaekyun Department of Photonics and Nanoelectronics Hanyang University Ansan15588 Korea Republic of Department of Mechanical Design Engineering Hanyang University Seoul04763 Korea Republic of Department of Mechanical Engineering Hanyang University Ansan15588 Korea Republic of Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering Inha University Incheon22212 Korea Republic of BK21 FOUR ERICA-ACE Center Hanyang University Ansan15588 Korea Republic of

All-solid-state electrochemical energy storage (EES) devices with prolonged lifetime, operational stability, and mechanical flexibility can be a promising route to powering up wearable electronics. However, conventional EES devices have been often hindered by a gradual decrease in energy capacity due to low ionic conducting electrolytes, non-suitable electrode materials, or poor electrode/electrolyte interfaces. Herein, we propose a harmonization of the molecular-level tailoring of ionic gel polymer electrolyte (IGPE) and graphene-based electrodes, significantly improving and sustaining the electrochemical performance (11.9 μWh cm-2) of EES microsupercapacitor (MSC) devices. Our optimized MSC device based on ethyl-3-methylimidazolium bis(fluorosulfonyl)imide (EMIM-FSI) and interdigitated reduced-graphene oxide (rGO) electrode array maintains 99% of the initial electrochemical capacity even after 20,000 cycles, also demonstrating the excellent mechanical flexibility (bending radius up to 4 mm) and environmental stability (>30 days) of the MSC-based array. Molecular-level simulation and spectroscopic atomic analysis revealed noticeably lower residual ionic liquid (IL) molecules of EMIM-FSI, compared to EMIM-trifluoromethyl FSI, between the graphene-based layers of electrodes during the charge/discharge cycles. Therefore, our optimization strategy and finding will pave the way to accomplishing next-generation of all-solid-state EES devices with ultra-high operational stability, powering wearable electronics. © 2022, The Authors. All rights reserved.

关键词： Molecular dynamics

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Decarbonization strategies of building materials used in the construction industry

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Materials Today: Proceedings 2023年

作者： Sami Sbahieh Mohammad Zaher Serdar Sami G. Al-Ghamdi Division of Sustainable Development College of Science and Engineering Hamad Bin Khalifa University Qatar Foundation Doha Qatar Environmental Science and Engineering Program Biological and Environmental Science and Engineering Division King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia KAUST Climate and Livability Initiative King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia

Building materials like steel, cement, and concrete are mainly the most used man-made materials in the world and the core materials for the construction industry. The high demand for these materials is increasing rapidly, resulting in significant greenhouse gas emissions to the atmosphere and contributing to global warming; therefore, a crucial need exists to investigate their environmental impact and to find effective strategies to decarbonize the building material industry. This paper aims to review the available decarbonization strategies that can be implemented in the building materials industry, especially in the steel and cement industry, to decrease CO 2 emissions associated with the production of building materials. It also proposes the use of alternative materials which have a reduced environmental impact compared to the traditional ones, like the use of fiber-reinforced polymer instead of steel for reinforcing structural elements or the use of alternative cement like geopolymer instead of ordinary Portland cement. The reported results of this study stated that the widespread production of concrete, cement, and steel leads to a negative impact on the environment. Additionally, the current standards for building materials are based on technical performance without considering their environmental impacts; therefore, using alternative materials helps to balance the technical and environmental performances. Utilizing geopolymer cement as a replacement for Portland cement reduced the CO 2 emissions by 10 to 70%, while adopting Fiber-reinforced polymer instead of steel in structural members reduced the CO 2 emissions by 4 to 75%, depending on the type of the FRP. Furthermore, reducing CO 2 emissions either in steel or in the concrete industry requires developing new technologies, which will be a key factor in accomplishing developments in these sectors. A combination of decarbonization technologies should be implemented to achieve the desired reduction in CO 2 em

关键词： Construction Industry Decarbonization Strategies Cement Decarbonization Steel Decarbonization Fiber-Reinforced Polymer Geopolymer

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3d Printable Ca(Oh)2-Based Geopolymer Concrete with Steel Fiber Reinforcement

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SSRN 2024年

作者： Mortada, Youssef Hammoud, Ahmad Masoud, Laith Wyrzykowski, Mateusz Sirtoli, Davide Lura, Pietro Mansoor, Bilal Masad, Eyad Department of Materials Science and Engineering Texas A&M University 575 Ross Street College StationTX77843 United States Mechanical Engineering Program Texas A&M University at Qatar P. O. Box 23874 Doha Qatar J. Mike Walker’66 Department of Mechanical Engineering Texas A&M University College StationTX77843 United States Concrete and Asphalt Laboratory Empa DübendorfCH-8600 Switzerland Institute for Building Materials ETH Zurich ZurichCH-8092 Switzerland Zachary Department of Civil and Environmental Engineering Texas A&M University College StationTX77843 United States

This study explores the impact of varying steel fiber percentages (0%, 0.8%, 1.0%, and 1.2% of the binder by volume) on the mechanical properties of geopolymer concrete (GPC). Initial investigations on the GPC matrix involved characterization of mechanical properties through tests of compressive, flexural, and tensile strengths, which were conducted across all fiber percentages. The best results were obtained at 1.2% fiber content, with a more than doubling of the 28-day tensile strength and a 16% increase of the flexural strength relative to the material without steel fibers. The compressive strength was not affected and remained at around 40 MPa. The interlayer bond strength increased by 20%, and both the dynamic and the static elastic moduli improved, indicating an improvement in structural integrity and capacity. The early-age cracking risk was assessed by measurements of autogenous shrinkage, of self-induced stresses measured with the Dual Ring Tests, and compressive basic creep on the mixture with 1.2% fiber content. These tests demonstrated a significant reduction in shrinkage and slight decrease in self-induced stresses. Microstructure analysis using X-ray microtomography, SEM, and ASTM C642 tests further confirmed the improved structural integrity of the steel fiber-reinforced concrete. The optimal fiber content of 1.2% of the binder not only strengthens the geopolymer matrix but also improves its long-term stability and durability, making it a viable reinforcement choice for additive manufacturing and construction applications. © 2024, The Authors. All rights reserved.

关键词： Steel fibers

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Advances in virus detection methods for wastewater-based epidemiological applications

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Case Studies in Chemical and environmental engineering 2022年 6卷 100238页

作者： Corpuz, Mary Vermi Aizza Buonerba, Antonio Zarra, Tiziano Hasan, Shadi W. Korshin, Gregory V. Belgiorno, Vincenzo Naddeo, Vincenzo Environmental Engineering Program National Graduate School of Engineering University of the Philippines 1101 Diliman Quezon City Philippines Department of Chemistry and Biology “Adolfo Zambelli” University of Salerno Via Giovanni Paolo II-132 Fisciano 84084 Italy Sanitary Environmental Engineering Division (SEED) Department of Civil Engineering University of Salerno Via Giovanni Paolo II-132 Fisciano 84084 Italy Department of Chemical Engineering Khalifa University of Science and Technology P.O. Box 127788 Abu Dhabi United Arab Emirates Department of Civil and Environmental Engineering University of Washington Box 352700 Seattle 98105-2700 WA United States

Wastewater-based epidemiology (WBE) is a powerful tool that has the potential to reveal the extent of an ongoing disease outbreak or to predict an emerging one. Recent studies have shown that SARS-CoV-2 concentration in wastewater may be correlated with the number of COVID-19 cases in the corresponding population. Most of the recent studies and applications of wastewater-based surveillance of SARS-CoV-2 applied the “gold standard” real-time quantitative reverse transcription-polymerase chain reaction (RT-qPCR) detection method. However, this method also has its limitations. The paper aimed to present recent improvements and applications of the PCR-based methods for SARS-CoV-2 monitoring in wastewater. Furthermore, it aimed to review alternative methods utilized and/or proposed for the detection of the virus in wastewater matrices. From the review, it was found that several studies have investigated the use of reverse-transcription digital polymerase reaction (RT-dPCR), which was generally shown to have a lower limit of detection (LOD) over the RT-qPCR. Aside from this, non-PCR-based and non-RNA based methods have also been explored for the detection of SARS-CoV-2 in wastewater, with detailed attention given to the detection of SARS-CoV-2 proteins. The potential methods for protein detection include mass spectrometry, the use of immunosensors, and nanotechnological applications. In addition, the review of recent studies also revealed two types of emerging methods related to the detection of SARS-CoV-2 in wastewater: i) capsid-integrity assays to infer about the infectivity of SARS-CoV-2 present in wastewater, and ii) alternative methods for detection of SARS-CoV-2 variants of concern (VOCs) in wastewater. The recent studies on proposed methods of SARS-CoV-2 detection in wastewater have considered improving this approach in one or more of the following aspects: rapidity, simplicity, cost, sensitivity, and specificity. However, further studies are needed in order to re

关键词： Capsid integrity Digital polymerase reaction SARS-CoV-2 detection SARS-CoV-2 protein Variants of concern Wastewater-based epidemiology

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