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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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Electrochemical impedance spectroscopy of supercapacitors: A novel analysis approach using evolutionary programming

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AIP Conference Proceedings 2014年第1期1627卷 76-80页

作者： Alon Oz Shany Hershkovitz Yoed Tsur The Interdisciplinary Energy Graduate Study Program Technion- Israel Institute of Technology Haifa Israel 32000 and Department of Chemical Engineering Technion- Israel Institute of Technology Haifa 32000 Israel The Interdisciplinary Energy Graduate Study Program Technion- Israel Institute of Technology Haifa 32000 Israel

In this contribution we present a novel approach to analyze impedance spectroscopy measurements of supercapacitors. Transforming the impedance data into frequency-dependent capacitance allows us to use Impedance Spectroscopy Genetic programming (ISGP) in order to find the distribution function of relaxation times (DFRT) of the processes taking place in the tested device. Synthetic data was generated in order to demonstrate this technique and a model for supercapacitor ageing process has been obtained.

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Initial Analysis of Plastic Debris Accumulation in the Estuary of Wonorejo River, Surabaya, Indonesia 6

Initial Analysis of Plastic Debris Accumulation in the Estua...

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6th Environmental Technology and Management Conference, ETMC 2019

作者： Kurniawan, Setyo Budi Imron, Muhammad Fauzul Department of Chemical and Bioprocess Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia Bangi Selangor43600 Malaysia Department of Environmental Engineering Faculty of Civil Environmental and Geo Engineering Institut Teknologi Sepuluh Nopember Kampus ITS Keputih Sukolilo Surabaya60111 Indonesia Study Program of Environmental Engineering Department of Biology Faculty of Science and Technology Universitas Airlangga Kampus C UNAIR Jalan Mulyorejo Surabaya60115 Indonesia

The purpose of this research was to investigate the accumulation of plastic debris in the Wonorejo River Estuary, Surabaya, Indonesia. Visible plastic debris were collected from three (3) sampling points along the intertidal area of Wonorejo River Estuary. The correlation between sampling points (SPs) and the amount of the collected plastic debris (CPD) was analysed using one-way ANOVA. Result of one-way ANOVA showed that the sampling point was significantly affect the amount of the collected plastic debris (p2 from SP1, 375.97±16.72 g dry weight/m2 from SP2, and 291.13±36.28 g dry weight/m2 from SP3. The highest percentage of collected debris item was plastic bags (up to 57.90%), followed by bottle caps (up to 16.65%). The most identified plastic types were Low-Density Polyethylene (LDPE) (up to 73.13%), followed by Polypropylene (PP) (up to 17.22%). Understanding the accumulation of plastic debris in estuary is a fundamental requirement to conduct an advance research related to the marine plastic pollution and to determine further actions to solve this problem. © 2020 The Authors, published by EDP Sciences.

关键词： Analysis of variance (ANOVA)

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Heavy metal content in final disposal garbage site at Banda Aceh City 1

Heavy metal content in final disposal garbage site at Banda ...

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1st SEMIRATA-International Conference on Science and Technology, SEMIRATA-ICST 2018

作者： Irhamni Pandia, S. Purba, E. Hasan, W. Study Program Management of Natural Resources and Environment Universitas Sumatera Utara Medan Indonesia Teaching Staff Faculty of Chemical Engineering Universitas Sumatera Utara Medan Indonesia Faculty of Agriculture Universitas Sumatera Utara Medan Indonesia Faculty of Public Health Universitas Sumatera Utara Medan Indonesia

The process of continuous landfill in the area of the final disposal (landfill) of waste produces pollutants such as leachate (leachate) is a liquid containing dissolved substances and suspended very fine as a result of waste decomposition by microbes. Leachate water contains decomposing organic materials and heavy metal materials. Heavy metals (Cr, Hg, Pb, Cu, Fe, Mn, Zl, Cl) present in leachate water are from waste that has been disposed to TPA Keudah Kota Banda Aceh. The author would like to do research on the adsorption of heavy metals by using Atomic Absorption Spectrophotometer in landfill leachate Banda Aceh. The purpose of this research is to get the absorption of some heavy metals in the landfill leachate by using AAS analysis method. The results of the analysis in landfill leachate solution Banda Aceh by using Atomic Adsorption Spectrohotometer its highest uptake in heavy metal parameters Iron (Fe) amounted to 10.9191 ppm, and is followed by the parameters of heavy metals (Ni) 0.9820 ppm, ( Zn) 0.4188 ppm, (Co) 0.1698, (Cu) 0.1198 ppm, (Pb) 0.0602 ppm, (Cr) 0.0502 ppm, (Hg), and (Cu) Cd) the results are not detected (ND). Considering that Indonesia in the future is still faced with environmental pollution problem as a result of the development, the restoration and rehabilitation of contaminated land needs to get mutual attention, such as by using dilution method, stabilization, and phytoremdiation technique. © Published under licence by IOP Publishing Ltd.

关键词： Heavy metals

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Perception of the community on the use of biogas as alternative energy (Case study: Jetak Village, Getasan sub district)

Perception of the community on the use of biogas as alternat...

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Life and Environmental Sciences Academics Forum 2018, LEAF 2018

作者： Putri, A. Purwanto Purnaweni, H. Study Program of Environmental Science School of Postgraduate Studies Diponegoro University Semarang Indonesia Faculty of Mathematics and Natural Sciences Semarang State University Semarang Indonesia Faculty of Chemical Engineering Diponegoro University Semarang Indonesia Faculty of Social Science and Political Science Diponegoro University Semarang Indonesia

The purpose of this research is to know public perception of biogas users in Jetak Village, Semarang Regency viewed from technological aspect, technical (biogas installation), biogas benefit, economy and environment. The method used qualitative descriptive with qualitative descriptive approach. The technique of determining key informants was done by purposive sampling. Data were obtained from cattle ranchers who lived in the study sites through interviews, observation and documentation. The result of this research is overall the perception about biogas energy get a positive response from user society. However, there are some things that should be considered for the government and others in providing assistance that is necessary to consider the evaluation and monitoring periodically so that the constraints experienced by the user community can be known early and can be found right solutions. In addition, the sustainability of the use of biogas energy can be done from generation to generation not just the aid which in the end becomes only useless materials. © 2020 IOP Publishing Ltd. All rights reserved.

关键词： Biogas

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Biosolubilization of Indonesia's Subbituminous Coal Using Neurospora intermedia 2

Biosolubilization of Indonesia's Subbituminous Coal Using Ne...

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2nd International Conference on Energy Sciences 2018, ICES 2018

作者： Restiawaty, Elvi Sasongko, Dwiwahju Hala, Ahmad Furqon Fauzan, Ryan Fitrian Sofwan Solihah, Nendry Nurramdani Harimawan, Ardiyan Mashudi No. 1 West Java45363 Indonesia Chemical Engineering Study Program Faculty of Industrial Technology Institut Teknologi Bandung Jalan Ganesa 10 Bandung40132 Indonesia Biosciences and Biotechnology Research Center Institut Teknologi Bandung Jalan Ganesa 10 Bandung40132 Indonesia

Recognizing its high volatile matter content, liquefaction to convert subbituminous coal with relatively low calorific value into liquid fuel by thermal or biological process has been subjected to extensive research. The former has been implemented commercially whereas the latter challenges for further studies. This paper looks into low-rank coal upgrading through subbituminous biosolubilization using Neurospora intermedia as the bioconverting agent. N. intermedia was initially cultured on agar medium containing a carbon source (glucose, sucrose, or cellulose) in a petri dish. After four days cultivation, sterilized coal particles with diameter of 1.5-2.5 mm were spread on N. intermedia culture. It was observed that N. intermedia could grow on the solid culture containing glucose, sucrose, and cellulose. However, the biosolubilization product was only observed from the solid culture with glucose and sucrose as carbon source. The highest biosolubilization rate was 1.07 × 10-3 abs/min and about 83% of coal could be solubilized when the media contained 15 g/L of glucose. The FTIR analysis showed that the spectrum of biosolubilization product was similar to the initial coal spectrum, but it contained small amount of aliphatic C-H group compounds and high amount of carbonyl, hydroxyl, and amine groups. © 2021 Published under licence by IOP Publishing Ltd.

关键词： Glucose

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Effect of treatment using Carica papaya seed extract with Ag-TiO2 nanocomposite on the mortality of Aedes aegypti larvae 2

Effect of treatment using Carica papaya seed extract with Ag...

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2nd Physics and Technologies in Medicine and Dentistry Symposium, PTMDS 2018

作者： Adayani, W.S. Subahar, R. Fatmawaty Slamet Medical Education Study Program Faculty of Medicine Universitas Indonesia Jakarta10430 Indonesia Department of Parasitology Faculty of Medicine Universitas Indonesia Jakarta10430 Indonesia Department of Chemistry Faculty of Medicine Universitas Indonesia Jakarta10430 Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Indonesia Kampus UI Depok West-Java16424 Indonesia

The incidence and mortality rate of dengue hemorrhagic fever (DHF) in Indonesia have continued to increase. However, the insecticidal control of the vector of DHF, Aedes aegypti (yellow fever mosquito), has resulted the development of insecticide resistance. The aim of this study was to evaluate the effects, singly and in combination, of two components with proven larvicidal activity, namely, the Ag-TiO2 nanocomposite and Carica papaya seed extract, on the mortality of A. aegypti larvae. This experimental study was categorized into the control and three intervention groups: 1) papaya seed extract at concentrations of 0, 2, 4, 6, 8, and 10 ppm;2) Ag-TiO2 at concentrations of 0, 5,10,15, 20, and 25 ppm;and 3) mixture of Ag-TiO2 and C. papaya seed extract 50% and 90% lethal concentration. After 24 h exposure, the 50% lethal concentration and the 90% lethal concentration were determined for the Ag-TiO2 nanocomposite (5.19 ppm and 10.87 ppm, respectively) and the C. papaya seed extract (25.98 ppm and 44.30 ppm, respectively). Significant differences were detected among Ag-TiO2 concentrations and mixture-group concentrations (p 2 concentrations and mixture group concentrations (r = 0.812, p = 0.001 and r = 0.343, p 2 to C. papaya seed extract increased the larvicidal effectiveness of the seed extract against A. aegypti larvae. © 2018 Institute of Physics Publishing. All rights reserved.

关键词： Mixtures

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Phage therapy

NATURE REVIEWS METHODS PRIMERS

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NATURE REVIEWS METHODS PRIMERS 2025年第1期5卷 1页

作者： [Anonymous] Human Microbiome Research Program Department of Bacteriology and Immunology Faculty of Medicine University of Helsinki Helsinki Finland European Society of Clinical Microbiology and Infectious Diseases (ESCMID) Study Group for Non-traditional Antibacterial Therapy (ESGNTA) Basel Switzerland Institute of Biomedical and Oral Research (IBOR) Faculty of Dental Medicine Hebrew University of Jerusaleum Jerusalem Israel The Israeli Phage Center (IPTC) of the Hebrew University and Hadassah Medical Center Jerusalem Israel Department of Clinical Microbiology and Infectious Diseases Hadassah–Hebrew University Medical Center Jerusalem Jerusalem Israel Laboratory of Gene Technology Department of Biosystems KU Leuven Leuven Belgium Leicester Centre for Phage Research Department of Genetics and Genome Biology University of Leicester Leicester UK Center for Evolutionary Hologenomics Globe Institute University of Copenhagen Copenhagen Denmark Centre of Excellence for Omics-Driven Computational Biodiscovery (COMBio) AIMST University Bedong Kedah Malaysia Laboratory of Phage Molecular Biology Institute of Immunology and Experimental Therapy Wrocław Poland Wrocław University of Science and Technology Faculty of Medicine Wrocław Poland Department of Biological Sciences University of Pittsburgh Pittsburgh PA USA Laboratory for Molecular and Cellular Technology Queen Astrid Military Hospital Brussels Belgium Department of Biological and Environmental Science Nanoscience Center University of Jyväskylä Jyväskylä Finland Chemical Engineering Department Loughborough University Loughborough UK

Bacteriophage (phages) are viruses that exclusively use bacterial cells for propagation, killing the bacterial host in the process. In phage therapy, phages are used to reduce bacterial numbers, thereby curing bacterial infections. Although this principle is conceptually straightforward, its practical application faces several hurdles. In this Primer, the practical aspects of phage therapy are outlined. We introduce the microbiological methods used to prepare and characterize phages and elucidate their interactions with bacteria. The discussion covers how the information in complete phage genome sequences is used, along with how RNA sequencing can enhance our understanding of phage biology. Selection parameters for therapeutic phages for clinical applications and key elements in industrial-scale phage production are provided. A summary of clinical trials both past and present, phage administration and dosing issues is analysed, as well as limitations associated with phage therapy and mitigation strategies. Finally, we speculate on the future of phage therapy.

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Feasible tar cleaning method of producer gas from palm kernel shell and mahogany fruit shell gasification

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Materials Today: Proceedings 2022年 63卷 S237-S243页

作者： Pranolo, Sunu Herwi Waluyo, Joko Paryanto Susanti, Ari Diana Permana, Rizky Bagas Erwanda, Irvan Delayaski, Nuzila Alhaq, A'laa 'Izzuddin Putro, Firman Asto Chemical Engineering Study Program Faculty of Engineering Universitas Sebelas Maret Jl. Ir. Sutami 36A Surakarta57126 Indonesia Chemical Engineering Diploma 3 Vocational School Universitas Sebelas Maret Jl. Kolonel Sutarto 150K Surakarta57126 Indonesia

Palm kernel shells and mahogany fruit shells are technically possible to be converted into producer gas by means of air gasification process for several purposes, such as fuel gas, liquid fuels, or chemicals processes after specific treatments. Tar as the most significant impurity in the producer gas should be minimized to prevent blockage or chocking in the downstream flow of the system and to produce high purity gas. This research examines producer gas cleaning system which consists of scrubber, elutriator pipe, and shell-and-tube heat exchanger to produce low tar content producer gas in a fixed-bed gasifier using both feedstocks. This system is coupled with a fixed-bed gasifier using air as gasifying agent at feedstock capacity of 25 kg/h. It is found that gasification of palm kernel shell produced more tar at 92.67 ppm compared with mahogany fruit shell at 26.87 ppm. Furthermore, this system demonstrated high performance in reducing tar content in producer gas up to value of 8.67 ppm and 10.00 ppm for palm kernel shell and mahogany fruit shell gasification respectively. © 2022

关键词： Fruits

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Biosorption of chromium by live and dead cells of Bacillus nitratireducens isolated from textile effluent

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Chemosphere 2024年 359卷 142389页

作者： Imron, Muhammad Fauzul Setiawan, Wahyu Putranto, Trisnadi Widyaleksono Catur Abdullah, Siti Rozaimah Sheikh Kurniawan, Setyo Budi Study Program of Environmental Engineering Department of Biology Faculty of Science and Technology Universitas Airlangga Campus C UNAIR Jalan Mulyorejo Surabaya60115 Indonesia Department of Water Management Faculty of Civil Engineering and Geosciences Delft University of Technology Stevinweg 1 CN Delft2628 Netherlands Study Program of Environmental Science Postgraduate Program Sriwijaya University Palembang30139 Indonesia Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia UKM Bangi Selangor 43600 Malaysia

Bacillus nitratireducens was isolated from textile effluent and showed high tolerance to chromium (Cr), reaching up to a 1000 mg/L MIC value. This research was aimed at utilizing biosorbents from live and dead cells of B. nitratireducens to remove Cr from an aqueous solution. A batch biosorption test was performed, and mechanisms analysis was approached by an adsorption-desorption test, SEM-EDS, and FTIR analysis. Cr removal by dead cells in 25, 50, and 100 mg/L of Cr were 58.99 ± 0.7%, 69.8 ± 0.2%, and 82.87 ± 0.11%, respectively, while that by live cells was 73.08 ± 1.9%, 80.27 ± 6.33%, and 86.17 ± 1.93%, respectively. Live cells showed significantly higher Cr removal and adsorption capacities as compared to dead cells. In all concentrations, absorption contributed more than adsorption to the Cr removal by both live and dead cells. Absorption of Cr was subjected to occur due to passive mechanisms in dead cells while involving some active mechanisms in live cells. SEM-EDS confirmed the detection of Cr on the cell surface, while FTIR revealed the shifting of some peaks after the biosorption test, suggesting interactions between Cr and functional groups. Further TEM analysis is suggested to be conducted as a future approach to reveal the inner structure of cells and confirm the involvement of absorption mechanisms. © 2024 Elsevier Ltd

关键词： Heavy metals

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