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Relationship between drought and soil erosion based on the normalized differential water index(NDWI)and revised universal soil loss equation(RUSLE)model

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Regional Sustainability 2024年第4期5卷 133-144页

作者： Muhammad RENDANA Wan Mohd Razi IDRIS Febrinasti ALIA Supli Effendi RAHIM Muhammad YAMIN Muhammad IZZUDIN Department of Chemical Engineering Faculty of EngineeringUniversitas SriwijayaIndralaya30662Indonesia Master Program of Environmental Management Graduate SchoolUniversitas SriwijayaPalembang30139Indonesia Department of Earth Sciences and Environment Faculty of Science and TechnologyUniversiti Kebangsaan MalaysiaBangi43600Malaysia Department of Civil Engineering Faculty of EngineeringUniversitas SriwijayaIndralaya30662Indonesia Master Program of Agricultural Sciences Graduate Study ProgramUniversitas Muhammadiyah PalembangPalembang30263Indonesia Department of Agribusiness Faculty of AgricultureUniversitas SriwijayaIndralaya30662Indonesia Department of Sociology Faculty of Social and Political SciencesUniversitas SriwijayaIndralaya30662Indonesia

The Langat River Basin in Malaysia is vulnerable to soil erosion risks because of its exposure to intensive land use activities and its topography,which primarily consists of steep slopes and mountainous ***,climate change frequently exposes this basin to drought,which negatively affects soil and water ***,recent studies have rarely shown how soil reacts to drought,such as soil ***,the purpose of this study is to evaluate the relationship between drought and soil erosion in the Langat River *** analyzed drought indices using Landsat 8 satellite images in November 2021,and created the normalized differential water index(NDWI)via Landsat 8 data to produce a drought *** used the revised universal soil loss equation(RUSLE)model to predict soil *** verified an association between the NDWI and soil erosion data using a correlation *** results revealed that the southern and northern regions of the study area experienced drought *** predicted an average annual soil erosion of approximately 58.11 t/(hm^(2)·a).Analysis of the association between the NDWI and soil erosion revealed a strong positive correlation,with a Pearson correlation coefficient of *** assumed that the slope length and steepness factor was the primary contributor to soil erosion in the study *** a result,these findings can help authorities plan effective measures to reduce the impacts of drought and soil erosion in the future.

关键词： Drought Soil erosion Normalized differential water index(NDWI) Revised universal soil loss equation(RUSLE) Langat River Basin

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Top Agricultural Commodities for Agropolitan Development in Nagan Raya District, Aceh, Indonesia 2nd

Top Agricultural Commodities for Agropolitan Development in ...

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2nd International Conference on Biomass Utilization and Sustainable Energy, ICoBiomasSE 2022

作者： Latif, Abdul Karim, Abubakar Sugianto, Sugianto Romano Ikhwali, M. Faisi Rusdi, Muhammad Doctor Candidate of Agriculture Graduate Program Universitas Syiah Kuala Banda Aceh Indonesia Faculty of Agriculture Universitas Syiah Kuala Banda Aceh Indonesia Department of Environmental Engineering Faculty of Science and Technology UIN Ar-Raniry Banda Aceh Aceh Indonesia

ISBN: (纸本)9789819916948

Top commodities are those that can stimulate growth or development in other sectors, both of which supply inputs and use output in the production process. Leading commodities have high rates of economic growth, relatively large distribution rates, high inter-sector linkages, and the ability to create high-added value. The aim of this research is to examine the leading commodities in Nagan Raya District, Aceh, Indonesia, in terms of agropolitan development. The research method is based on (1) descriptive analysis of agricultural commodity potential, (2) Location Quotient (LQ) analysis to determine commodity superiority, (3) Shift Share Analysis (SSA) to determine commodity development priority level, performance sub-district economy and its hierarchical structure based on agricultural commodity resources, and (4) priority analysis for the development of superior commodities. Darul Makmur sub-district has the highest agricultural production with 73,678 tons/year, followed by Beutong (39,514 tons/year), East Seunagan (36,369 tons/year), Tadu Raya (28,488 tons/year), and Seunagan (24,532 tons/year). This output contains oil palm, rubber, rice, corn, soybeans, cassava, long beans, kale, red chili, durian, banana, and papaya. Meanwhile, the results of the priority development of superior commodities analysis show that the districts of Kuala Pesisir, Beutong Ateuh Banggalang, and East Seunagan have the potential to be agropolitan agriculture developments in Nagan Raya. This is supported by positive proportional and regional share growth, as well as land's ability to provide the most superior commodities (15 commodities) compared to other sub-districts. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Agriculture

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Polyelectrolyte nanoparticles derived from durian seed gum modified with chitosan for selective targeting in cancer cells

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International Journal of Biological Macromolecules 2025年 315卷 144625页

作者： Jindrayani Nyoo Putro Fasih Bintang Ilhami Chih-Chia Cheng Keziah Janice Imanuela Dave Mangindaan Wenny Irawaty Astrid Rahmawati Osamu Shimomura Suryadi Ismadji Chemical Engineering Master Program Faculty of Engineering Widya Mandala Surabaya Catholic University Kalijudan 37 Surabaya 60114 Indonesia Collaborative Research Center for Sustainable and Zero Waste Industries Jl. Kalijudan 37 Surabaya 60114 East Java Indonesia Department of Natural Science Faculty of Mathematics and Natural Science Universitas Negeri Surabaya Surabaya 60231 Indonesia Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei 10607 Taiwan Department of Chemical Engineering Widya Mandala Surabaya Catholic University Kalijudan 37 Surabaya 60114 Indonesia Professional Engineer Program Department Faculty of Engineering Bina Nusantara University K.H. Syahdan No. 9 Jakarta 11480 Indonesia Waste-Food-Environmental Nexus Research Interest Group Bina Nusantara University K.H. Syahdan No. 9 Jakarta 11480 Indonesia Department of Applied Chemistry Osaka Institute of Technology 5-16-1 Omiya Ashahi-ku Osaka 535-8585 Japan

The synthesis of natural polysaccharides from durian seed gum-modified chitosan as complex nanoparticles was successfully developed. The complex formation of nanoparticles was confirmed by 1 H NMR, indicating the interpenetrating polymer network between the durian seed gum and chitosan. The material's physical properties were analyzed using ZETA potential, SEM, FTIR, swelling assay, and spectrofluorometer. The material showed a pH-responsive behavior as evidenced by the swelling assay, in which the complex nanoparticle has a smaller swelling index in pH 5.5 and 7.4 than pH 2.1. The stability of the material was tested by checking the hydrodynamic diameter, which resulted in the modification of chitosan having higher kinetic stability than the durian seed gum under a diameter smaller than 1 μm. The chitosan-modified durian seed gum's hemolytic activity indicates blood compatibility with 4 % hemolytic activity under high nanoparticle concentration (400 μg/mL). More importantly, the cytotoxicity test of complex nanoparticles showed biocompatibility with NIH/3 T3 cells, whereas complex nanoparticles exhibited high toxicity towards HeLa cells. Moreover, complex nanoparticles showed strong intracellular blue fluorescence with selective activity towards cancer cells. Hence, this newly developed green synthesis of polyelectrolyte nanoparticles derived from durian seed gum modified with chitosan improved selectivity and intracellular fluorescence in tracking cancer cells.

关键词： Bioimaging Chitosan Cytotoxicity Durian seed gum Polyelectrolyte nanoparticles

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Using living machines for the treatment and utilization of dairy washwater

Using living machines for the treatment and utilization of d...

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ASAE Annual International Meeting 2004

作者： Keppler, Angelique Martin, Jay Environmental Science Graduate Program Ecological Engineering Group Ohio State University 590 Woody Hayes Dr. Columbus OH 43210 United States Food Agricultural and Biologial Engineering Departement Ecological Engineering Group Ohio State University 590 Woody Hayes Dr. Columbus OH 43210 United States

The potential for an Ecological Treatment System (ETS) to improve water quality of highly concentrated dairy wastewater is supported by the effective treatment of municipal wastewater by previous ecological systems such as Living Machines™, algal scrubbers, and treatment wetlands. This study utilized a lab-scale ETS that consisted of six components;three aerated vegetative tanks, one anaerobic tank, one clarifier, and one wetland mesocosm, resulting in a total water volume of 878 L. This system treated dairy wastewater added in increments of 7.5, 15, and 22.5 L every 72 hours. The influent CBOD5 of the waste averaged 1490.46 mg L-1. Regardless of loading rate, the system consistently reduced CBOD5 concentrations more than 99%. Percent reductions for the following variables were not affected by the different loading rates;TSS (96.5%), PC (99.5%), POC (99.2%), and TN (87.1%). However, there was a significant difference (R-ANOVA, p-value 4-N, PO4-P, and TP. Reduction rates greater than 99% were measured for NH4-N, TP, and TSS for all loading rates. However, TSS and NH4-N did not meet effluent discharge goals of 10 mg L-1 and 0.1 mg L-1, respectively, at loading rates of 22.5 L, and TP did not meet the effluent discharge goal of 1 mg L-1 for any of the loading rates. The effectiveness of the system to remove NO 3-N was limited by the bio-availability of carbon. At the lowest loading rate (7.5 L), there were no reductions in concentrations of NO 3-N. However, at the highest loading rate (22.5 L) the NO 3-N was reduced to zero during the first 3 hours of treatment. The dependence of nitrate reduction on the bio-availability of carbon was supported by an inverse relationship (r2=0.77) between PC and nitrate at the highest loading rate.

关键词： Dairies

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Mechanical Properties of Fine-Grained Concrete Using Fine-Red Sand and Fly Ash for Road Construction: A Case Study in Vietnam 5th

Mechanical Properties of Fine-Grained Concrete Using Fine-Re...

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5th International Conference on Rehabilitation and Maintenance in Civil engineering, ICRMCE 2021

作者： Sang, Nguyen Thanh Quan, Thai Minh Nguyen, May Huu Ho, Lanh Si University of Transport and Communications Hanoi Viet Nam University of Transport Technology 54 Trieu Khuc Thanh Xuan Hanoi100000 Viet Nam Civil and Environmental Engineering Program Graduate School of Advanced Science and Engineering 1-4-1 Kagamiyama Hiroshima Higashi-Hiroshima739-527 Japan

ISBN: (纸本)9789811693472

Nowadays, in order to decrease environmental impacts such as exhaustion of natural resources and CO2 discharge, the partial replacement of cement by fly ash and coarse aggregate by crushed fine aggregate in concrete have been attracted many researchers. This study concentrated on an experimental examination of the mechanical properties of fine-grained concrete using fine-red sand placement for crushed sand. Experimental tests were performed to investigate compressive, splitting tensile, and flexural strength. The results reveal that the compressive, splitting tensile, and flexural strength increased with curing time for all mixtures. The increase in the amount of fine-red sand replacement caused a decrease in all mixtures. It was also found that there is a strong correlation between compressive and splitting tensile strength with a high coefficient of determination. Besides, the results of compressive, splitting tensile, and flexural strength satisfied the requirement of concrete used for pavement. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Compressive strength

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The Dependence in Microcystin Removal with Powdered Activated Carbon on Variant Properties, Carbon Properties, and Dissolved Organic Matter

SSRN

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SSRN 2023年

作者： Huang, Yuzhou Lenhart, John J. Environmental Science Graduate Program The Ohio State University United States Department of Civil Environmental and Geodetic Engineering The Ohio State University United States

Microcystins (MCs) are a class of harmful cyanotoxins produced during harmful algal blooms (HABs), and their presence demands mitigation strategies. Powdered activated carbon (PAC) adsorption is an effective treatment method for MC removal, but its efficacy is influenced by several factors. For example, MC removal varies depending upon the properties of the PAC and MC variant. Dissolved organic matter (DOM) is also known to impact MC removal by PAC. To enhance the removal of MC by PAC, it is not only necessary to investigate the individual impact of these factors but also to consider them in an integrated manner as the importance of each of these factors compared to one another is not clear. Thus, in this study we evaluated the relative importance of PAC properties, MC variant properties, and the presence of DOM on MC removal. Kinetic adsorption experiments were conducted over a period of 72 hours with four MC variants (MC-LR, MC-LA, MC-RR and desmethylated MC-RR) and three PAC types (wood-based, coal-blend and coal-based) that had different properties. The role of DOM was investigated using two different DOM sources (microbial DOM and terrestrial DOM). The results demonstrated wood-based PAC, which had the highest surface area and mesopore volume of the PAC tested, had the highest adsorption rate and capacity for all four MC variants. Of the variants studied, neutrally charged MC-RR was adsorbed more rapidly and to a greater extent on all of the PAC types than were the other variants. As expected, DOM inhibited microcystin adsorption to PAC. The degree of inhibition, however, did not significantly vary for the two DOM types evaluated and the magnitude of inhibition decreased as the DOM concentration increased. Overall, the PAC properties were a more important factor in MC removal than were the MC properties or DOM conditions. © 2023, The Authors. All rights reserved.

关键词： Adsorption

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Fabrication and photocatalytic activity of TiO2 composite membranes via simultaneous electrospinning and electrospraying process

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Journal of environmental sciences 2018年第10期30卷 13-24页

作者： Taddao Pahasup-anan Kowit Suwannahong Wipada Dechapanya Ratthapol Rangkupan International Program in Hazardous Substance and Environmental Management Graduate School Chulalongkorn UniversityBangkok 10330Thailand Center of Excellence on Hazardous Substance Management (HSM) Bangkok 10330 Thailand Department of Public Health Faculty of Public Health Western UniversityKanchanaburi 71170 Thailand Department of Chemical Engineering Faculty of Engineering Ubonratchathani UniversityUbonratchathani 34190 Thailand Metallurgy and Materials Science Research Institute Chulalongkorn University Bangkok 10330 Thailand Nanotec-CU Center of Excellence on Food and Agriculture Chulalongkorn UniversityBangkok 10330 Thailand

In present study, a simultaneous electrospinning and electrospraying（SEE） process was employed to produce microclusters of TiO2 nanoparticles and interlock them in nanofibrous network. The photocatalytic composite membranes（PCMs） were fabricated by electrospraying TiO2 nanoparticle suspension into microcluster form that dispersed and entrapped within nylon-6 electrospun fiber membrane. Three PCMs membrane with TiO2 content of 52.0, 83.6,and 91.7 wt.% were successfully fabricated. The membrane consisted of TiO2 microclusters,ranging in sizes from around 0.3 to 10 μm, distributed uniformly within the nylon-6 nanofibrous network. PCMs photocatalytic activity against Methylene Blue（MB） in aqueous solution showed more than 98% MB removal efficiency after 120 min of photocatalytic oxidation（PCO） for all PCMs. For PCM with the highest TiO2 content tested for 5 PCO cycles, it was found that most of their TiO2 content remained incorporated within the nanofibrous structure. The concept of nanoparticles clusters entrapment with SEE fabrication employed here provide a simple and effective method for reducing detachment of nanostructure phase from nanocomposite membrane.

关键词： Nanocomposites Electrospinning Electrospraying TiO2 Photocatalysis

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Comparison of solid-state anaerobic digestion to composting of yard trimmings with effluent from liquid anaerobic digestion: Effect of total solids content and feedstock to effluent ratio

Comparison of solid-state anaerobic digestion to composting ...

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American Society of Agricultural and Biological Engineers Annual International Meeting 2014, ASABE 2014

作者： Lin, Long Yang, Liangcheng Xu, Fuqing Michel, Frederick C. Li, Yebo Department of Food Agricultural and Biological Engineering Ohio State University Ohio Agricultural Research and Development Center 1680 Madison Ave. WoosterOH44691 United States Environmental Science Graduate Program Ohio State University WoosterOH United States

ISBN: (纸本)9781632668455

Solid-state anaerobic digestion (SS-AD) and composting of yard trimmings with effluent from liquid anaerobic digestion were compared at a range of total solids (TS) contents and feedstock to effluent (F/E) ratios under thermophilic condition. For SS-AD, TS contents of 22%, 25%, and 30% were studied, while for composting TS contents of 35%, 45%, and 55% were sued. Experiments were conducted at various feedstock to effluent (F/E) ratios including 2, 3, 4, 5, and 6. High TS content negatively affected degradation rates as indicated by low biogas and carbon dioxide yields for SS-AD and composting, respectively. In composting, the greatest carbon loss was obtained at 35% TS, which was 2-3 times of that at 55% TS and was up to 50% higher than that in SS-AD. In SS-AD, over half of the degraded carbon was converted to methane with the greatest methane yield of 121 L/kg VSfeedstock obtained at 22% TS. Methane production from SS-AD was low at low F/E ratios (i.e. 2 and 3), likely due to inhibitory effects of high concentrations of ammonia nitrogen (up to 5.6 g/kg N). Nitrogen-rich (N, P, K) end products with similar N-P-K values but different dominant forms of nitrogen were generated from SS-AD and composting.

关键词： Biogas

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Hierarchical kinetic simulation for autocatalytic decomposition of cumene hydroperoxide at low temperatures

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Journal of Thermal Analysis and Calorimetry 2009年第3期96卷 751-758页

作者： Chen, Jiann-Rong Cheng, Shyh-Yuch Yuan, Min-Hao Kossoy, Arcady A. Shu, Chi-Min General Education Hsiuping Institute of Technology 11 Gong-Ye Road Dali Taichung County 41280 Taiwan Doctoral Program Graduate School of Engineering Science and Technology National Yunlin University of Science and Technology 123 University Road Sec. 3 Douliou Yunlin 64002 Taiwan Department of Occupational Safety and Hygiene Chia-Nan University of Pharmacy and Science 60 Erh-Jen Road Sec.1 Jente Tainan 71710 Taiwan Graduate Institute of Environmental Engineering National Taiwan University 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Ltd 14 Dobrolubov Ave St. Petersburg 197198 Russia

A hierarchical set of kinetic models were proposed and discussed for simulation of autocatalytic decomposition of cumene hydroperoxide (CHP) in cumene at low temperatures. The hierarchy leads from a formal model of full autocatalysis, which is based on conversion degree as a state variable, through a two-stage autocatalytic concentration-based model to a meticulous multi-stage model of the reaction. By the ForK (Formal Kinetics) and DesK (Descriptive Kinetics) software, developed by ChemInform Saint Petersburg (CISP) Ltd., the related kinetic parameters and their significance have also been estimated and elucidated. Through this best-fit approach, it is possible to formulate a systematic methodology on the kinetic studies for thermal decomposition of typical organic peroxides with autocatalytic nature, specifically at low temperature ranges. © 2009 Akadémiai Kiadó, Budapest, Hungary.

关键词： Kinetic parameters

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Erratum to “Assessing background levels of trace elements in soils of Mato Grosso (Brazil) for environmental and food security” [CATENA 244 (2024) 108267]

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CATENA 2025年 248卷

作者： F.L. Silva M.H. Martins e Silva J.B. Veiga A.C.S. Silva M.A.C. Carvalho O.L.S. Weber E.S. Eguchi M. López-Alonso E.S. Oliveira-Júnior L.R.G. Guilherme M.A.P. Pierangeli Department of Education Federal Institute of Mato Grosso Alta Floresta 78580-000 MT Brazil Department of Biology University of Mato Grosso State Alta Floresta MT 78580-000 Brazil Amazon Environmental Research Institute (IPAM) Canarana MT 78640-000 Brazil Department of Agronomy University of Mato Grosso State Alta Floresta MT 78580-000 Brazil Department of Soils and Rural Engineering Federal University of Mato Grosso Cuiabá 78060-900 MT Brazil Department of Animal Science University of Mato Grosso State Pontes e Lacerda MT 78250-000 Brazil Department of Animal Pathology University of Santiago de Compostela Lugo 27002 Spain Center of Ethnoecology Limnology and Biodiversity Laboratory of Ichthyology of the Pantanal North Graduate Program of Water Resources Management and Regulation and of Environmental Science University of Mato Grosso State Cáceres MT 78200-000 Brazil Department of Soil Science School of Agriculture Federal University of Lavras (ESAL-UFLA) Lavras MG 37203-202 Brazil Department of Animal Science Postgraduate Program of Environmental Science University of Mato Grosso State Pontes e Lacerda MT 78250-000 Brazil

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