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Enhancing Indian Onion (Allium Cepa L. VAR. Aggregatum) Extraction by Microwave Hydrodiffusion – Gravity (Mhg) Methode: Parametric Studi and Optimization

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SSRN 2024年

作者： Variyana, Yeni Fitria, Murni Muchammad, Raka Selaksa Charisma Mahfud, Mahfud Study Program of Industrial Chemical Engineering Politeknik Negeri Lampung Jl. Soekarno Hatta No.10 Bandar Lampung35144 Indonesia Jl. Rungkut Madya No.1 Surabaya60294 Indonesia Department of Chemical Engineering Institut Teknologi Sepuluh Nopember Surabaya60111 Indonesia

The aim of this study is to obtain an essential oil from Allium cepa L. var. aggregatum by the extraction process using the microwave hydrodiffusion-gravity method. The operating parameters are drying pre-treatment, material size, microwave power, and extraction time. The optimal parameter conditions were determined by screening the data using a full factorial design and subsequently optimizing the process using a face-centered central composite design. The oil yield initially increases with the extraction period and then reaches a plateau, showing no further increase. The moisture content reduction resulting from drying methods has a direct impact on the production of essential oils, leading to increased yields. The results show that the highest yield achieved is 2.78 percent, which occurs for a duration of 75 minutes, a power level of 600 W, and a material size of 1 cm. In addition, the onion oil extract also contains cyclohexanol, 5-methyl-2-(1-methylethenyl) and Z-sitral. © 2024, The Authors. All rights reserved.

关键词： Microwave generation

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Application of K-Medoids Cluster Result with Particle Swarm Optimization (PSO) in Toddler Measles Immunization Cases 1

Application of K-Medoids Cluster Result with Particle Swarm ...

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1st Virtual Conference on engineering, Science and Technology, ViCEST 2020

作者： Cynthia, Eka Pandu Rahadjeng, Indra Riyana Karyadiputra, Erfan Rahman, Fauzi Yusa Windarto, Agus Perdana Limbong, Martalina Hermanto, Teguh Iman Rusiadi, E. Yarmani, Y. Informatics Engineering Study Program Faculty of Science and Technology UIN Sultan Syarif Kasim Riau Indonesia Universitas Bina Sarana Informatika Jakarta Indonesia Universitas Islam Kalimantan Muhammad Arsyad Al Banjari Banjarmasin Indonesia STIKOM Tunas Bangsa Pematangsiantar Indonesia Akademi Keperawatan Surya Nusantara Pematangsiantar Indonesia Informatics Engineering Study Program Sekolah Tinggi Teknologi Wastukancana Indonesia Universitas Pembangunan Panca Budi Medan Indonesia Universitas Bengkulu Bengkulu Indonesia

The objective of the research was to analyze the clustering method by optimizing Particle Swarm Optimization (PSO) in the case of measles immunization for children under the age of 5. The research data source used is the North Sumatra Province Central Bureau of Statistics (https://***/). The data used in 2019 included 33 records with variables BCG, DPT-HB3/DPT-HB/Hib3, CAMPAK (MEASLES + RUBELLA), POLIO 4 and HEPATITIS B. The methods used were k-medoids and PSOs. This method is used to determine the value of the Davies Bouldin Index (DBI) before the cluster value is determined (k). The resulting k values were compared to k-medoids without PSO. The best results of k-medoid and PSO will be tested by classification to see the accuracy value of the cluster formed. The results showed that the optimization of k-medoids and PSO was better with the number of clusters (k = 5) than 0.078. (DBI). The results also show that the accuracy of the cluster formed is 95% with a correlation of 0.98. © Published under licence by IOP Publishing Ltd.

关键词： Immunization

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Scientometric Analysis of Artificial Intelligence Research in Agriculture 4

Scientometric Analysis of Artificial Intelligence Research i...

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4th International Conference on Informatics, Multimedia, Cyber and Information System, ICIMCIS 2022

作者： Maulana, Fairuz Iqbal Pramono, Andi Hamim, Miftahul Prihatin, Sukeipah Yuli Arifuddin, Rahman School of Computer Science Bina Nusantara University Computer Science Department Jakarta11480 Indonesia School of Design Bina Nusantara University Interior Design Department Jakarta11480 Indonesia Binus Business School Bina Nusantara University Entrepreneurship Business Creation Jakarta11480 Indonesia Politeknik Kota Malang Informatics Study Program Malang Indonesia University of Merdeka Malang Department of Electrical Engineering Malang Indonesia

ISBN: (纸本)9781665473279

Artificial Intelligence Research in Agriculture has grown so common, and the potential they provide is so revolutionary that it is considered essential for competitive growth. Until we conducted this research, only 1064 academic documents on Trends of Artificial Intelligence Research in Agriculture that we found from 2012 to 2021 were obtained by searching the Scopus database. This study uses bibliometric analysis methods to map scientific publications worldwide. We use an article selection process, the year limitation, then the database is exported to RIS and CSV format files. Researchers in the United States had the most published articles and were indexed by Scopus among the most prolific authors ($\mathrm{N}=287$), followed by the United Kingdom at second ($\mathrm{N}=139$) and Italy with 66 academic publications. Data analysis reveals an increasing trend in the number of Trends of Artificial Intelligence Research in Agriculture publications worldwide, as measured by the Scopus index. © 2022 IEEE.

关键词： Agriculture

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Alternative foundation for reducing building losses due to foundation failure in soft soil 4

Alternative foundation for reducing building losses due to f...

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4th International Conference on Earthquake engineering and Disaster Mitigation, ICEEDM 2019

作者： Srihandayani, Susy Doctoral Program Departement of Civil Eng. Engineering Faculty Andalas University Indonesia Civil Engineering Study Program Sekolah Tinggi Teknologi Dumai Riau Indonesia

Much damage to buildings occurs in areas that have soft soil layers due to the failure of the foundations. Besides, foundations in soft soils generally require very expensive construction. For this reason, proper research needs to help develop strong foundations that can be used on soft soils with relatively low cost. In this research, foundations with various diameters and depths were tested on soft soil. The foundations were made of PVC pipes with diameters of ½ ", 1", 2 " or 2.5" and the same depth. Soft soil in the form of clay with particle-sizes that passed filter No. 200 was used. Before testing the foundations, carrying capacity analysis was done using the classical method on each pipe with a closed head so that the optimum carrying capacity of each foundation (PVC Pipe) was known. From this test the influence of the size of the foundations on the carrying capacity of soft soil could be seen. The results of this research will help reduce building loss/damage in areas dominated by soft topsoil © 2020 The Authors, published by EDP Sciences.

关键词： Foundations

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The substitution of Mg2+ with Mn2+/4+ metal ions in chlorophyll structure isolated from Gliricidia sepium leaves 2

The substitution of Mg2+ with Mn2+/4+ metal ions in chloroph...

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2nd International Conference and Exhibition on Sciences and Technology, ICEST 2020

作者： Selan, O.T.E. Hawu, H.N. Poy, L. Cunha, T.D. Darmakusuma, D. Chemistry Study Program Faculty of Science and Engineering University of Nusa Cendana Jl. Adisucipto Penfui Kupang Indonesia Bioscience Laboratory University of Nusa Cendana Jl. Adisucipto Penfui Kupang Indonesia

One of the critical issues of using chlorophyll (Mg-Chl) as a dye photosensitizer in DSSC is related to a rapid decay of this material. Changing the alkali metal using transition metal ions could theoretically increase the stability of chlorophyll. In this research, the substitution of Mg2+ with Mnn+ ions (n = 2 and 4) in chlorophyll structure isolated from Gliricidia sepium leaves had been carried out. The column chromatography technique was chosen to separate the chlorophyll followed by modifying the metal centre using two different compounds containing manganese, namely MnCl2 and MnO2. The results show that there are differences in Rf values after substitutions, [0.90 (Mg-Chl), 0.81 (Mn2+-Chl), and 0.96 (Mn4+-Chl)]. The Soret bands experience a redshift from 330 to 338 nm for Mn2+-Chl and a blue shift from 411 to 401 nm for Mn4+-Chl while the Q band has a redshift from 665 to 668 nm for Mn2+-Chl but a blue shift from 665 to 526 nm for Mn4+-Chl. The obtained products have similar IR absorption patterns to Mg-Chl but differ only in its transmittance with slightly higher wavenumbers shifts. Shifting of UV-Visible and Infra-red characteristics indicate different molecular electronic nature of the obtained compounds. This implies successful substitution for the metal centre without damaging the structure of the chlorophyll. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Transition metals

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Optimisation-based sampling time selection for modelling the three interacting tanks

Optimisation-based sampling time selection for modelling the...

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International Conference on Advanced Mechatronics, Intelligent Manufacture, and Industrial Automation (ICAMIMIA)

作者： Helmy Rahadian Azka Muji Burohman Augie Widyotriatmo Endra Joelianto Engineering Physics Doctoral Program Institut Teknologi Bandung Bandung Indonesia Electrical Engineering Study Program Universitas Dian Nuswantoro Semarang Indonesia Research Center for Photonics National Research and Innovation Agency (BRIN) Tangerang Selatan Indonesia Instrumentation and Control Research Group Institut Teknologi Bandung Bandung Indonesia Institut Teknologi Bandung University Center of Excellence AI on Vision NLP & Big Data Analytics Bandung Indonesia

This paper considers parameters and sampling time identification of a three interacting tanks system. A novel tailor-made model is introduced to deal with the real plant in the laboratory. Experimental data are then exploited to perform parameter identification via particle swarm optimisation (PSO) method. In addition to the system parameters, we propose to simultaneously optimize the sampling selection in the optimisation process. Even though several well known sampling time selection are established, a more precise selection is required. It is shown in this paper that a meta-heuristic optimisation method (PSO) can be an efficient procedure for this problem. Moreover, three different error measures for performing optimisation are also discussed.

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Computational fluid dynamics analysis of the natural circulation system in vertical heater horizontal cooler (VHHC) molten salt loop 9

Computational fluid dynamics analysis of the natural circula...

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9th Asian Physics Symposium 2021, APS 2021

作者： Hariyanto, Duwi Waris, Abdul Suprijadi Nuclear Physics and Biophysics Research Division Physics Department Institut Teknologi Bandung Indonesia Nuclear Science and Engineering Department Institut Teknologi Bandung Indonesia Theoretical High Energy Physics and Instrumentation Research Division Physics Department Institut Teknologi Bandung Indonesia Instrumentation and Automation Engineering Study Program Production and Industrial Technology Department Institut Teknologi Sumatera Indonesia

Molten salt has attracted the attention of researchers, especially as a coolant because of its characteristics. This study aimed to analyse the transient and steady-state of the natural circulation system in the molten salt loop with vertical heater and horizontal cooler using computational fluid dynamics. The computational fluid dynamics module in the COMSOL Multiphysics software was used to solve governing equations. Experimental data from several references were used as input data in modelling. The loop was modelled as a rectangular loop with Inconel 625 as the pipe material and molten salt (NaNO3+KNO3) as the working fluid. The variation of heater power was also carried out in modelling. The modelling results showed a good agreement with the experimental results. The results provided that the molten salt natural circulation loop with vertical heater and horizontal cooler showed good flow stability without reversal of flow direction. © Published under licence by IOP Publishing Ltd.

关键词： Computational fluid dynamics

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The impact of copper oxide nanoparticles reinforced nanocellulose acetate membrane on antibacterial and dye removal Potency

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Results in engineering 2024年 23卷

作者： Yanuhar, Uun Suryanto, Heru Amin, Muhamad Maulana, Jibril Mohamad Lal, Mohammad Tamrin Caesar, Nico Rahman Study Program of Aquatic Resources Management Faculty of Fisheries and Marine Sciences Universitas Brawijaya East Java Indonesia Department of Mechanical and Industrial Engineering Faculty of Engineering Universitas Negeri Malang Jl. Semarang 5 Malang65145 Indonesia Department of Aquaculture Faculty of Fisheries and Marine Universitas Airlangga Jl. Dharmahusada Permai Surabaya60115 Indonesia Borneo Marine Research Institute Universiti Malaysia Sabah Jalan UMS Sabah Kota Kinabalu88400 Malaysia Doctoral Program of Environment Science Post Graduate Program Universitas Brawijaya Jalan Veteran East Java Malang65145 Indonesia

With the rapid growth of the textile, leather, cosmetics, and pharmaceutical industries, concerns about pollutants in these sectors, especially dye pollutants, are increasing. This research characterizes bacterial nanocellulose acetate membranes made from Sargassum extract reinforced with copper oxide nanoparticles and tests their antibacterial properties and dye removal in water. Sargassum sp. extract was fermented using Acetobacter xylinum for 10 days, producing bacterial nanocellulose, which was then esterified to create bacterial nanocellulose acetate. Copper oxide nanoparticles were added to the bacterial nanocellulose acetate solution in varying concentrations, cast, and oven-dried. The membrane was analyzed using Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscope, antibacterial activity, and dye removal. Results showed uniform copper oxide nanoparticles distribution on the membrane surface. Structure analysis revealed diffraction peaks at 35.44° and 38.57°, indicating a reduced crystalline index but improved membrane effectiveness. Antibacterial tests showed a zone of inhibition against bacterial growth, increasing with higher copper oxide nanoparticle content. The addition of copper oxide nanoparticles also influenced the dye removal capacity for Metanil Yellow, Congo Red, Eosin Yellow, Methylene Blue, and Malachite Green. The kinetic analysis showed that the adsorption process follows a pseudo-first-order model, with higher correlation coefficients (R2) compared to the pseudo-second-order model. © 2024 The Author(s)

关键词： Fourier transform infrared spectroscopy

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Assessment of road traffic performance of the Tsunami evacuation road in Padang Municipality area based on the traffic volume simulation approach 4

Assessment of road traffic performance of the Tsunami evacua...

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4th International Conference on Earthquake engineering and Disaster Mitigation, ICEEDM 2019

作者： Yossyafra, Yossyafra Fitri, Nurhuda Sidhi, Rahmat Punama Yosritzal, Yosritzal Mazni, Deni Irda Civil Engineering Department Faculty of Engineering Universitas Andalas Indonesia Civil Engineering Study Program Universitas Dharma Andalas Indonesia

There are many cities on the west coast of the Sumatra, which are at high risk of the Tsunami disaster. Regional Regulations on Regional Spatial Planning for each City/Regency have compiled disaster mitigation by constructing several evacuation roads. This study wants to illustrate: what are the volume of traffic generation and road performance, if there is a Tsunami disaster. The simulation is developed by predicting traffic volume based on parameters, population density, vehicle ownership, land use, and activities in the area around the road. The assessment was carried out on two tsunami evacuation roads in the city of Padang, West Sumatra Province. The results show that the highest traffic volume occurred in the period from 06.30 a.m until 3:00 p.m., during school activities. One of the roads will not be able to accommodate the volume of traffic during a disaster, due to significant traffic congestion. This study shows that: (1) the period of activity and land use are two main parameters, which must be considered in designing tsunami evacuation roads, (2) The degree of saturation ratio and the ratio between the capacity of sections of Tsunami evacuation routes can be proposed as a parameter for assessing the performance of Tsunami evacuation roads in urban areas. © 2020 The Authors, published by EDP Sciences.

关键词： Tsunamis

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Prototype Design of Smart Diabetic Shoes with Lora Module Communication

Prototype Design of Smart Diabetic Shoes with Lora Module Co...

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Computer Science, Information Technology and engineering (ICCoSITE), International Conference on

作者： Purwono Purwono Asmat Burhan Khoirun Nisa’ Sony Kartika Wibisono Iis Setiawan Mangkunegara Pramesti Dewi Alfian Ma’Arif Iswanto Suwarno Department of Informatics Universitas Harapan Bangsa Purwokerto Indonesia Department of Anesthesiology Nursing Universitas Harapan Bangsa Purwokerto Indonesia Department of Information Technology Universitas Harapan Bangsa Purwokerto Indonesia Nursing Study Program Universitas Harapan Bangsa Purwokerto Indonesia Department of Electrical Engineering Universitas Ahmad Dahlan Yogyakarta Indonesia Department of Engineer Professional Program Universitas Muhammadiyah Yogyakarta Yogyakarta Indonesia

Diabetes is a disease that affects many people in the world. Diabetes mellitus is a type of metabolic disease in a person who suffers from blood glucose levels with extreme conditions, namely insufficient insulin production in the human body. Monitoring diabetes is an important concern for researchers because it can be useful for improving the quality of the nursing service system. One of the common conditions in diabetic patients is ulceration which is difficult to detect on time. Technology can minimize the total cost of monitoring chronic diseases such as Diabetes continuously and on time. This research focuses on solutions to produce IoT-based smart diabetic shoes that utilize pressure sensors and the temperature of the feet of people with diabetic feet. Smart diabetic shoes are made using the Lora E32 module to be applied to areas with poor internet connections. The results of the testing carried out for 60 seconds in this study succeeded in detecting the area of the foot that experienced the greatest pressure, which was located on the rear footrest with a portion of pressure of around 25 – 28% of the total body weight. The patient's foot temperature increases when the pedestal load is greater. The Lora E32 module also functions as a media transmitter and receiver at a distance of 2.2 km in sending sensor data.

关键词： Temperature sensors Pressure sensors Transmitters Web services Footwear Receivers Diabetes

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