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SSRN 2022年

作者： Cerna, Fernando Vladimir Naderi, Ehsan Marzband, Mousa Contreras, Javier Coêlho, John K. Fantesia, Maurício P. Department of Electrical Engineering Federal University of Roraima Boa Vista69310-000 Brazil Postgraduate Program in Natural Resources Research Area in Management and Dynamics of Natural Resources – Renewable Energies Federal University of Roraima Av. Nova Iorque – Aeroporto Boa Vista69310-000 Brazil School of Electrical Computer and Biomedical Engineering Southern Illinois University CarbondaleIL62901 United States Department of Mathematics Physics and Electrical Engineering Faculty of Engineering and Environment Northumbria University Newcastle upon TyneNE1 8ST United Kingdom School of Industrial Engineering University of Castilla-La Mancha Ciudad Real13071 Spain

The load factor (LF) of an electricity network (EN) is an indicator related to the efficient electricity usage within a time horizon (e.g., day, month, year, etc.). LF improvement can be achieved through an efficient operational scheme that combines several strategies. Among them, peak load regulation in the demand profile of all the consumers together with the operation of distributed resources (DREs), such as renewable sources (RSs) and capacitor banks (CBs) represents a promising alternative. To address this efficient scheme, this work proposes a mixed-integer linear programming (MILP) model that aims to increase the LF through the bulk scheduling of residential, commercial, and industrial electrical appliances during the day, considering a baseline demand and an hourly rate. At the same time, voltage fluctuations and technical losses are mitigated by the presence of DREs in the EN. Operational constraints related to the performance of EN, RSs, and CBs are considered. Uncertainties in the habitual demand profiles and solar radiation incidence during the day are represent through simulation algorithms. In order to evaluate our proposal, a modified 14-node IEEE EN was used. The results corroborate the applicability of this proposed MILP model, reducing electricity waste and ensuring the efficient EN operation. © 2022, The Authors. All rights reserved.

关键词： Integer programming

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Community-centric importance and performance evaluation of Human-Orangutan Conflict management in Aceh, Indonesia

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Trees, Forests and People 2024年 15卷

作者： Suhardono, Sapta Fitria, Laili Septiariva, Iva Yenis Sari, Mega Mutiara Ulhasanah, Nova Prayogo, Wisnu Arifianingsih, Nur Novilina Buana, Dwinto Martri Aji Suryawan, I Wayan Koko Environmental Sciences Study Program Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Surakarta 57126 Indonesia Department of Environmental Engineering Faculty of Engineering Universitas Tanjungpura Pontianak 78124 Indonesia Civil Engineering Study Program Faculty of Engineering Universitas Sebelas Maret Jl. Ir Sutami No.36 Surakarta 57126 Indonesia Department of Environmental Engineering Faculty of Infrastructure Planning Universitas Pertamina Jakarta 12220 Indonesia Department of Building Engineering Education Faculty of Engineering Universitas Negeri Medan Medan 20221 Indonesia Department of Environmental Engineering Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Bandung 40116 Indonesia Department of Management Universitas Widyatama Bandung 40125 Indonesia Department of Natural Resources and Environmental Studies College of Environmental Studies and Oceanography National Dong Hwa University Hualien 97401 Taiwan

This study presents an Importance-Performance Analysis (IPA) to evaluate the management strategies for Human-Orangutan Conflict (HOC) in Aceh, Indonesia. Utilizing an IPA Grid, the research categorizes various management strategies into four quadrants, each reflecting different levels of community-perceived importance and performance. Strategies like “Orangutan-Safe Fences” and “Community-Based natural Resource management (CBNRM) for Orangutans” in Quadrant A are both important and performing well, underscoring the effectiveness of current efforts in these areas. Significantly, “Traditional Measures for Orangutan Deterrence,” which include non-harmful, traditional methods such as the use of specific noise deterrents, physical barriers, and community-led patrols to discourage orangutans from entering human areas, alongside “Quick Response program for Orangutan Incidents,” are placed in Quadrant B. In Quadrant C, “Strengthen Law Enforcement and Conservation Policies” are deemed less crucial and underperforming, suggesting a lower priority for immediate resource allocation. Lastly, Quadrant D includes well-performing but less critical strategies like “Early Warning Systems for Orangutan Presence” and “Raise Local Awareness About Orangutans,” pointing to potential over-investment. The study's findings advocate for a strategic reallocation of resources and highlight the importance of aligning conservation efforts with community priorities for effective and sustainable HOC management. © 2024 The Author(s)

关键词： Aceh Community-based conservation Human-Orangutan Conflict Importance-performance analysis Wildlife management

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Optimized ensemble-based flood hazard mapping in low altitude subtropical riverine terrane

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Discover Geoscience 2024年第1期2卷 1-32页

作者： Pandey, Manish Costache, Romulus Dash, Pratik Geesupalli, Purna Durga Siddiqui, Masood A. Pandey, Prem Chandra Santosh, M. Bateni, Sayed M. Arora, Aman Marwadi University Research Centre Marwadi University Rajkot India Research Institute of the University of Bucharest Bucharest Romania National Institute of Hydrology and Water Management Bucharest Romania Danube Delta National Institute for Research and Development Tulcea Romania Department of Civil Engineering Transilvania University of Brasov Brasov Romania Department of Geography Khejuri College (Affiliated to Vidyasagar University) Medinipur India Interdisciplinary Program in Climate Studies Indian Institute of Technology Bombay Mumbai India Department of Geography Faculty of Natural Sciences Jamia Millia Islamia New Delhi India Department of Life Sciences School of Natural Sciences Shiv Nadar Institution of Eminence Greater Noida India School of Earth Sciences and Resources China University of Geosciences Beijing Beijing China Department of Earth Science University of Adelaide Adelaide Australia Department of Civil Environmental and Construction Engineering and Water Resources Research Center University of Hawaii at Manoa Honolulu USA Université Gustave Eiffel GERS-LEE Bouguenais France

Among various natural hazards, those induced by hydrological and meteorological factors have emerged as the most frequent and damaging. India is at the second from the top, after Bangladesh, of flood hazard-affected countries of the world, causing immense damage to life and property every year. The Middle Ganga Plain in the country is one of the most severely affected regions due to the convergence of Himalayan rivers in the Ganga (Ganges) plain. This study focuses on optimizing novel ensemble models to enhance the mapping of flood hazard susceptibility in specific topoclimatic setting, characterized by a low-altitude-range, sub-tropical monsoonal climate, and a riverine floodplain environment of the tectonically active Middle Ganga Plain. This region forms part of the Ganga Foreland Basin prone to frequent floods. We employ a comprehensive flood inventory and twelve selected flood conditioning factors and is the first study that has developed these ensemble models in low relief riverine floodplain environmental setting with high resolution geomorphology as one of the conditioning factors. Four artificial intelligence ensemble models were employed in this work: Logistic Regression-Evidential Belief Function (LR-EBF), Logistic Regression-Frequency Ratio (LR-FR), Multi-Layer Perceptron-Evidential Belief Function (MLP-EBF), and Multi-Layer Perceptron-Frequency Ratio (MLP-FR). Results showed that LR-based ensembles outperformed MLP-based ensembles in the studied topoclimatic setting, with LR-EBF model achieving 87.2% and 84.7% success and prediction rates respectively. Our results reveal consistent performance differences between LR-based ensembles with FR and EBF models across different environmental settings. MLP-based ensembles, particularly with Frequency Ratio, displayed more significant performance variations. The findings underscore the importance of considering specific topoclimatic and altitudinal range environments when applying flood hazard susceptibility mod

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Modelling and Application of Jutes Fiber Reinforced Epoxy Composite in the Development of Wind Blade for Low Intensity Winds

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SSRN 2023年

作者： Junio, Raí Felipe Pereira Cardoso, Robson Luis B. Ramos, Roberto Paulo B. Leão Filha, Elza M. Ribeiro, Mauricio M. Candido, Verônica S. Rodrigues, Jean da S. Silva, Douglas Santos Monteiro, Sergio N. Fujiyama, Roberto T. Federal University of Pará—UFPA Engineering of Natural Resources of the Amazon Program Rua Augusto Corrêa 01 PA BelémCEP 66075-110 Brazil Federal Institute of Education Science and Technology of Pará – IFPA Materials Engineering Program Avenida Almirante Barroso 1155 Marco PA BelémCEP 66093-020 Brazil Federal University of Pará - UFPA Postgraduate Program in Industrial Engineering Rua Augusto Corrêa 01 PA BelémCEP 66075-110 Brazil Federal Institute of Education Science and Technology of Pará – IFPA Estrada do Icuí Guajará PA AnanindeuaCEP 67125-000 Brazil Military Institute of Engineering – IME Department of Materials Science Praça General Tibúrcio 80 Praia Vermelha Urca RJ Rio de JaneiroCEP 22290-270 Brazil

natural fibres show an increasing potential as reinforcement of polymeric composites, representing a promising concurrent to glass and carbon fibres extensively used in the construction of wind turbine blades synthetic fibres recyclability/disposability and high production energy cost have already been discussed in the main turbine producing centres. In particular, the development of wind turbines for low wind speed areas can increase the energy generation potential of regions not originally eligible for the installation of large turbines. This study proposes the evaluation of the use of jute fibre (Corchorus capsularis) reinforced epoxy composite in the construction of S1210 airfoil profile, of a small-scale wind turbine for low wind speed regions, considering the structural parameters, developed incorporating the Classical Laminate Theory (CLT) and Extended Bredt-Batho Shear Flow Theory (EBSFT).In order to raise the elastic properties and enable the use of the failure criteria, the composite blades were characterized according to ASTM standards. The mechanical properties surveyed, together with the elastic parameters of the cross section, torsional stiffness, axial stiffness and flexural rigidity, demonstrated the feasibility of using the jute fiber reinforced epoxy composite in the blade construction, evaluated according to the maximum tension failure criterion. © 2023, The Authors. All rights reserved.

关键词： Laminated composites

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Synthesis of a biocomposite based on Kluwih (Artocarpus camansi) seed starch incorporated with carrageenan as a functional additive and cellulose nanofiber filler

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Case Studies in Chemical and Environmental engineering 2025年 11卷

作者： Hidayat, Fadlan Indarti, Eti Rahmi Arahman, Nasrul Doctoral Program of Agricultural Science Postgraduate School Universitas Syiah Kuala Banda Aceh 23111 Indonesia Department of Agricultural Product Technology Agriculture Faculty Universitas Syiah Kuala Banda Aceh 23111 Indonesia Atsiri Research Center PUI Universitas Syiah Kuala Jl. Syeh A Rauf No. 5 Darussalam Banda Aceh 23111 Indonesia Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Syiah Kuala Banda Aceh 23111 Indonesia Department of Chemical Engineering Engineering Faculty Universitas Syiah Kuala Banda Aceh 23111 Indonesia Research Center for Environmental and Natural Resources Universitas Syiah Kuala Jl. Hamzah Fansuri No. 4 Darussalam Banda Aceh 23111 Indonesia

The widespread use of synthetic plastics causes environmental issues because of their nondegradability. In this study, biocomposite from Kluwih seed starch were incorporated with carrageenan and cellulose nanofiber (CNF) to improve their mechanical properties. CNFs were prepared using the TEMPO method with ultrasonication. The variables included starch (1, 1.5, 2 g), carrageenan (3, 4.5, 6 g), and CNF (0.006, 0.12, 0.18 g). The mechanical properties of the biocomposite were optimized using RSM. Zeta potential analysis confirmed the stability of CNFs, and XRD and FTIR analyses revealed improved crystallinity and functional groups. The tensile strength of the biocomposites was 12.08 kgf/mm², which is suitable for sustainable packaging applications. © 2025

关键词： Biocomposite Carrageenan Cellulose nanofiber Kluwih seeds starch Tensile strength

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Occurrence and fate of pharmaceutical pollutants in wastewater: Insights on ecotoxicity, health risk, and state–of–the-art removal

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Chemosphere 2024年 354卷 141678页

作者： Nguyen, Minh-Ky Lin, Chitsan Bui, Xuan-Thanh Rakib, Md. Refat Jahan Nguyen, Hoang-Lam Truong, Quoc-Minh Hoang, Hong-Giang Tran, Huu-Tuan Malafaia, Guilherme Idris, Abubakr M. Faculty of Environment and Natural Resources Nong Lam University Hamlet 6 Linh Trung Ward Thu Duc City Ho Chi Minh City700000 Viet Nam Ph.D. Program in Maritime Science and Technology National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Linh Trung Ward Thu Duc City Ho Chi Minh City700000 Viet Nam Ho Chi Minh City700000 Viet Nam Department of Environmental Science and Management North South University Dhaka Bashundhara1229 Bangladesh Department of Civil Engineering McGill University Montreal Canada Faculty of Management Science Thu Dau Mot University Binh Duong 75000 Viet Nam Faculty of Medicine Dong Nai Technology University Dong Nai Bien Hoa76100 Viet Nam Laboratory of Ecology and Environmental Management Science and Technology Advanced Institute Van Lang University Ho Chi Minh City700000 Viet Nam Faculty of Applied Technology School of Engineering and Technology Van Lang University Ho Chi Minh City700000 Viet Nam Post-Graduation Program in Ecology Conservation and Biodiversity Federal University of Uberlândia MG Uberlândia Brazil Post-Graduation Program in Biotechnology and Biodiversity Federal University of Goiás GO Goiânia Brazil Post-Graduation Program in Conservation of Cerrado Natural Resources Goiano Federal Institute GO Urutaí Brazil Department of Chemistry College of Science King Khalid University Abha62529 Saudi Arabia King Khalid University Abha62529 Saudi Arabia

Pharmaceutical active compound (PhAC) residues are considered an emerging micropollutant that enters the aquatic environment and causes harmful ecotoxicity. The significant sources of PhACs in the environment include the pharmaceutical industry, hospital streams, and agricultural wastes (animal husbandry). Recent investigations demonstrated that wastewater treatment plants (WWTPs) are an important source of PhACs discharging ecosystems. Several commonly reported that PhACs are detected in a range level from ng L−1 to μg L−1 concentration in WWTP effluents. These compounds can have acute and chronic adverse impacts on natural wildlife, including flora and fauna. The approaches for PhAC removals in WWTPs include bioremediation, adsorption (e.g., biochar, chitosan, and graphene), and advanced oxidation processes (AOPs). Overall, adsorption and AOPs can effectively remove PhACs from wastewater aided by oxidizing radicals. Heterogeneous photocatalysis has also proved to be a sustainable solution. Bioremediation approaches such as membrane bioreactors (MBRs), constructed wetlands (CWs), and microalgal-based systems were applied to minimize pharmaceutical pollution. Noteworthy, applying MBRs has illustrated high removal efficiencies of up to 99%, promising prospective future. However, WWTPs should be combined with advanced solutions, e.g., AOPs/photodegradation, microalgae–bacteria consortia, etc., to treat and minimize their accumulation. More effective and novel technologies (e.g., new generation bioremediation) for PhAC degradation must be investigated and specially designed for a low-cost and full-scale. Investigating green and eco-friendly PhACs with advantages, e.g., low persistence, no bioaccumulation, less or non-toxicity, and environmentally friendly, is also necessary. © 2024 Elsevier Ltd

关键词： Microalgae

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Effect of Edible Film Nano-Biocomposite Packaging and Storage Temperature on the Store Quality of Strawberry (Fragaria X Ananassa ***)

SSRN

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SSRN 2023年

作者： Aprilia, Sri Ratna Arahman, Nasrul Munawar, Agus Arip Department of Agricultural Engineering Universitas Syiah Kuala Darussalam Banda Aceh23111 Indonesia Doctoral Program School of Engineering Post Graduate Program Universitas Syiah Kuala Darussalam Banda Aceh23111 Indonesia Department of Chemical Engineering Universitas Syiah Kuala Darussalam Banda Aceh23111 Indonesia Graduate School of Environmental Management Universitas Syiah Kuala Darussalam Banda Aceh23111 Indonesia Research Center for Environmental and Natural Resources Universitas Syiah Kuala Jl. Hamzah Fansuri No. 4 Darussalam Banda Aceh23111 Indonesia Atsiri Research Center Universitas Syiah Kuala Jl. Syeh A. Rauf Darussalam Banda Aceh23111 Indonesia

An edible film is a type of bioplastic packaging that can be used to package strawberries. Therefore, this study aimed to determine the packaging effect using nanobiocomposite edible film based on gelatin/nanocrystalline cellulose with the addition of antioxidants nanopropolis and storage temperature on the quality and shelf life of strawberries. The strawberries fruit were packed with edible film nanobiocomposite and stored at 5°C, 10°C, and 30°C. The parameters analyzed were water content, Vitamin C, hardness, total dissolved solids, pH, and shelf life. The results showed that the water content ranged from 23.95 to 65.89%w/b at the end of the storage period and was stable at 5°C and 10°C. Furthermore, hardness at the end of storage ranged from 0.265 to 0.431 kg/cm2 and all treatments experienced a decrease in Vitamin C content during storage. The total dissolved solids content at the end of storage was 5.92-12%Brix, with a shelf life ranging from 3-21 days of storage, as determined by all treatment parameters. These results showed that bionanocomposite edible film packaging can increase the shelf life of strawberries. © 2023, The Authors. All rights reserved.

关键词： Food storage

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Lessons from the Short-Lived 2021 Fertilizer Import Ban in Sri Lanka Based on Analysis of Nutrient Flows

ACS Sustainable Resource Management

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ACS Sustainable Resource management 2024年第11期1卷 2361-2371页

作者： Maya J. Fein-Cole Mohamed Esham Nilanthi Jayathilake Miriam Otoo Christopher Koliba Gillian L. Galford Katherine K. Porterfield Isuru B. Wijethunga Eric D. Roy Rubenstein School of Environment and Natural Resources University of Vermont 81 Carrigan Drive Burlington Vermont 05405 United States Department of Agribusiness Management Sabaragamuwa University of Sri Lanka Belihuloya 70140 Sri Lanka International Water Management Institute 127 Sunil Mawatha Battaramulla Colombo 10120 Sri Lanka Tetra Tech ARD 1320 North Courthouse Road Arlington Virginia 22202 United States School of Public Affairs and Administration University of Kansas 1445 Jayhawk Boulevard Lawrence Kansas 66045 United States Gund Institute for Environment University of Vermont 210 Colchester Avenue Burlington Vermont 05405 United States Department of Civil and Environmental Engineering University of Vermont 33 Colchester Avenue. Burlington Vermont 05405 United States Department of Soil Science Postgraduate Institute of Agriculture University of Peradeniya Old Galaha Road Peradeniya 20400 Sri Lanka

The Sri Lankan government’s 2021 policy to ban mineral fertilizer imports and shift to green agriculture provides an opportunity to examine the potential for nutrient recycling in a more circular economy. Here, we examined national-level nutrient flows in Sri Lanka to determine the capacity to offset mineral fertilizer with alternative nutrient sources, considering nitrogen (N) and phosphorus (P). Beyond animal manure already applied to croplands, other nutrient sources, including municipal solid waste (MSW) compost and human excreta, have limited potential to offset mineral fertilizer imports. For example, MSW compost and early adoption of nutrient recovery from human excreta could provide N and P equal to only ≤10% of mineral fertilizer use. Furthermore, we used a grid-based resource recovery and distribution model to identify priority areas for the nutrient management transition in Sri Lanka. Reuse of recovered nutrients from MSW compost and human excreta in model scenarios was in urban and peri-urban areas, including home gardens, distant from much of the nation’s agriculture. Our findings reinforce calls for long-term strategic planning for transitions in nutrient management. Future policies should consider fundamental constraints on alternative nutrient sources and emphasize increasing capacity for both effective nutrient recycling and efficient mineral fertilizer *** paper identifies constraints on nutrient availability influencing the outcome of Sri Lanka’s controversial 2021 mineral fertilizer ban and makes broadly applicable recommendations for future agricultural nutrient management transitions.

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A bibliometric review on applications of lignocellulosic fibers in polymeric and hybrid composites: Trends and perspectives

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Heliyon 2024年第19期10卷 e38264页

作者： Santos, Caroliny M. Santos, Thiago F. Rao, H Jeevan Silva, F. Higor V.A. Mavinkere Rangappa, Sanjay Boonyasopon, Pawinee Siengchin, Suchart Souza, D.F.S. Nascimento, J.H.O. Postgraduate Program in Chemical Engineering Technology Center Federal University of Rio Grande do Norte Av. Prof. Sen. Salgado Filho 3000 Natal 59072-970 Rio Grande do Norte Brazil Department of Mathematics School of Sciences and Humanities Nazarbayev University Astana 010000 Kazakhstan Natural Composites Research Group Lab Department of Materials and Production Engineering The Sirindhorn International Thai-German School of Engineering (TGGS) King Mongkut's University of Technology North Bangkok (KMUTNB) Bangkok Thailand Department of Design Management and Business Development Faculty of Architecture and Design King Mongkut's University of Technology North Bangkok (KMUTNB) Bangkok Thailand

Over the past 10 years, materials science and engineering have shown increasing interest in incorporating lignocellulosic fibers into polymer and hybrid composites (LCF-CPH). This bibliometric analysis, covering the period 2012 to 2022, examines the current state of research on the application of these fibers in composites, with the aim of identifying significant contributions, new trends, and possible future directions. The analysis included a comprehensive database search using specific criteria, which revealed a significant increase in research activity on a variety of lignocellulosic fibers, such as flax, jute, hemp and sisal. This growth is particularly evident in the packaging, automotive, aerospace and construction industries. Hybrid composites based on these fibers have gained prominence due to their enhanced properties, which include improvements in mechanical, thermal and environmental characteristics. The findings of this research have significant implications for governments, corporations, and academic institutions. Researchers gain a deeper understanding of emerging trends, industry gains valuable insights into the advantages of adopting lignocellulosic fibers, and policymakers gain essential information to support the development of sustainable composites. In the field of advanced composites and sustainable materials, this work lays a solid foundation for future research and industrial applications. © 2024

关键词： Applications Composites natural fibers Polymers

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Application of edible films from fermented Opuntia cochenillifera mucilage in the preservation of minimally processed fruits

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Food Chemistry 2025年 488卷 144849页

作者： Monteiro, Shênia Santos dos Anjos, Antônia Isabelly Monteiro de Sousa, Anna Clara Batista da Silva, Mikaelly Batista Monteiro, Shirley Santos Moreira, Emmanuel Pereira Almeida, Renata Duarte de Bittencourt Pasquali, Matheus Augusto Federal University of Campina Grande Graduate Program in Engineering and Natural Resources Management Campina Grande58429-900 Brazil Federal University of Campina Grande Graduate Program in Food Engineering Campina Grande58429-900 Brazil Department of Agronomy Federal University of Paraiba Areia58397-000 Brazil Federal University of Paraiba Bananeiras58220-000 Brazil

This study evaluated a coating based on Opuntia cochenillifera mucilage fermented with Lactobacillus gasseri and starch (MOCF-S) to extend the shelf life of minimally processed melons under refrigeration. The films were characterized according to thickness, solubility, water vapor permeability, optical properties, morphology, Fourier transform infrared spectroscopy (FTIR), and thermal and mechanical properties. The MOCF-S film showed high solubility (96.43 %), greater water vapor permeability (6.13 g/kPa h m2), and a smooth and uniform surface, suggesting compatibility between fermented mucilage and starch. It also demonstrated greater tensile strength and the presence of amide I bands in FTIR, indicating structural interactions. Antimicrobial activity was detected in the contact area against Escherichia coli (6.7 to 7.3 mm) and Staphylococcus aureus (6.7 to 7.7 mm). After 12 days at 5 °C, the coated fruits maintained better titratable acidity and antioxidant compounds compared to the control, demonstrating the potential of the MOCF-S film in postharvest conservation. © 2025 Elsevier Ltd

关键词： Fourier transform infrared spectroscopy

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