:: Abstract List ::

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31 |
Energy and Environmental Physics |
ABS-276 |
Pengaruh Perubahan Suhu dan Kelembapan pada Chamber Effective Isotropic Radiated Power (EIRP) terhadap Pengukuran Total Radiated Power (TRP) Qoshirotu Thorfi Gibran Yusuf, Riser Fahdiran, Yonatan Ryoichi Purba
1) Universitas Negeri Jakarta
2) Balai Besar Pengujian Perangkat Telekomunikasi (BBPPT
Abstract
Kegiatan Praktik Kerja Lapangan (PKL) ini dilaksanakan di Balai Besar Pengujian Perangkat Telekomunikasi (BBPPT) dengan fokus pada pengujian perangkat radio frekuensi, khususnya pengaruh suhu dan kelembapan terhadap hasil pengukuran Total Radiated Power (TRP). Pengujian dilakukan dengan memvariasikan kondisi suhu dan kelembapan di dalam chamber menjadi tiga kategori, yaitu di bawah standar, dalam standar, dan di atas standar. Standar yang digunakan mengacu pada ISO IEC 17025 dan ETSI EN 300 440, yaitu suhu 20 sampai 26 C dan kelembapan relatif 50 sampai 70. Pengukuran TRP dilakukan secara eksperimental menggunakan chamber EIRP yang dilengkapi sistem multi-axis positioner, untuk mendapatkan data radiasi dari berbagai sudut. Hasil pengujian menunjukkan adanya perbedaan nilai TRP pada kondisi lingkungan yang tidak sesuai standar, yang mengindikasikan bahwa fluktuasi suhu dan kelembapan dapat memengaruhi keakuratan pengukuran. Kegiatan ini memberikan pemahaman praktis mengenai pentingnya pengendalian lingkungan dalam pengujian perangkat telekomunikasi, serta menegaskan peran standar internasional dalam menjaga validitas dan reliabilitas hasil pengukuran. Melalui kegiatan ini, diharapkan kontribusi dapat diberikan dalam upaya peningkatan mutu laboratorium pengujian dan kesesuaian pengujian perangkat terhadap regulasi teknis yang berlaku.
Keywords: Total Radiated Power (TRP), Suhu dan Kelembapan, EIRP Chamber
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| Corresponding Author (Qoshirotu Thorfi Gibran Yusuf)
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32 |
Energy and Environmental Physics |
ABS-277 |
PREDIKSI KONSENTRASI POLUTAN UDARA PM 2,5 BERBASIS MACHINE LEARNING SERTA ANALISIS DAMPAKNYA TERHADAP KESEHATAN MASYARAKAT Jibran Haykal Ramadhan, Teguh Budi Prayitno, Muhayatun Santoso
Universitas Negeri Jakarta, Badan Riset dan Inovasi Nasional
Abstract
Praktik Kerja Lapangan (PKL) ini dilaksanakan di Badan Riset dan Inovasi Nasional (BRIN) dengan fokus pada penerapan algoritma machine learning untuk memprediksi konsentrasi polutan udara PM2.5 dan menganalisis dampaknya terhadap kesehatan masyarakat. Penelitian dilakukan dengan menggunakan data kualitas udara dan parameter meteorologi dari wilayah Jakarta Pusat pada periode 2021-2024. Model prediksi dibangun dengan algoritma seperti Forecasting LSTM, dan Prophet. Hasil menunjukkan bahwa konsentrasi PM2.5 mengalami peningkatan signifikan secara musiman dan diperkirakan akan terus meningkat hingga pertengahan 2025. Temuan ini selaras dengan tren peningkatan kasus Infeksi Saluran Pernapasan Akut (ISPA), menunjukkan hubungan erat antara kualitas udara dan kesehatan masyarakat. Faktor meteorologis seperti suhu tinggi, kelembapan rendah, dan kecepatan angin yang rendah juga memperparah akumulasi PM2.5 di atmosfer. Studi ini menegaskan pentingnya pemanfaatan teknologi prediktif berbasis data lingkungan untuk mendukung pengambilan kebijakan dan mitigasi risiko polusi udara. Selain itu, kegiatan ini juga memperkuat kompetensi mahasiswa dalam analisis data, pemodelan prediktif, dan penerapan ilmu fisika secara aplikatif dalam isu-isu lingkungan perkotaan.
Keywords: PM2.5, machine learning, Prophet, kualitas udara, ISPA.
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| Corresponding Author (Jibran Haykal Ramadhan)
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33 |
Energy and Environmental Physics |
ABS-25 |
Prediction of Gas Turbine Performance Utilizing Hybrid LSTM RFE Models and Bayesian Optimization for Hyperparameter Tuning Tri Handoyo (a), Joko Waluyo (b*), Noor Akhmad Setiawan (c)
(a) Master of System Engineering, Faculty of Engineering, Gadjah Mada University, Indonesia
(b) Mechanical and Industrial Engineering Department, Faculty of Engineering, Gadjah Mada University, Indonesia
*jokowaluyo[at]ugm.ac.id
(c)Electrical Engineering and Information Technology Department, Faculty of Engineering, Gadjah Mada University, Indonesia
Abstract
Keywords: Gas Turbine Performance, LSTM, RFE, Bayesian Optimization, Feature Selection
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| Corresponding Author (Tri Handoyo)
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34 |
Energy and Environmental Physics |
ABS-38 |
Experimental investigation of the effect of piston mass on charging efficiency in the compressed air-gravity energy storage Ragil Sukarno (1*) Astama Lalang Fawwaz (1), Siska Titik Dwiyati (1), Darwin Rio Budi Syaka (1), Agung Premono (1), Anif Jamaluddin (2), Indrianto Dicky Ismawan (1), Eldi Saputra (1)
1) Department of Mechanical Engineering, Universitas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta Timur 13220, Indonesia
2)Department of Physics Education, Faculty of Teacher Training and Education, Universitas Sebelas Maret, Surakarta 57126, Indonesia
Abstract
The intermittent electricity production from solar energy causes an increase in the need for energy storage technology. This research aims to determine the effect of piston mass on the charging efficiency of compressed air-gravity energy storage (CA-GES) in solar power plant applications. This research was conducted through experiments with a CA-GES prototype connected to an energy source from a solar power plant. The mass of the piston varied by 0.3 kg, 0.7 kg, and 2 kg, and the solar power source varied by 14.4 W, 15.5 W, and 22.6 W input power, with the target pressure on the CA-GES tank side of 2 bar. The results showed that the highest efficiency of 67% was obtained at an input power of 14.4 W and a piston mass of 2 kg. As the piston mass increases, the charging efficiency increases, increasing the electrical energy stored in the CA-GES energy storage system.
Keywords: solar energy- compressed air-gravity energy storage (CA-GES)- piston mass- charging- efficiency
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| Corresponding Author (Ragil Sukarno)
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35 |
Energy and Environmental Physics |
ABS-294 |
PENGARUH RADIASI ELEKTROMAGNETIK WI-FI TERHADAP MORFOLOGI DAN PERTUMBUHAN TANAMAN CAPSICUM ANNUUM Faqih Ahmad Fadhilah, Marisa Ulfa, Yudha Pratama Putra
1) Universitas Negeri Jakarta
2) Balai Besar Pengujian Perangkat Telekomunikasi (BBPPT)
Abstract
Penelitian ini bertujuan untuk mengkaji pengaruh paparan radiasi elektromagnetik dari sinyal Wi-Fi terhadap morfologi dan pertumbuhan tanaman cabai (Capsicum annuum). Seiring dengan pesatnya perkembangan teknologi komunikasi, keberadaan perangkat pemancar sinyal seperti router Wi-Fi semakin meluas dan dapat memberikan dampak terhadap lingkungan, termasuk tumbuhan. Penelitian dilakukan dengan metode eksperimen menggunakan dua kelompok tanaman: satu sebagai kelompok kontrol (tanpa paparan Wi-Fi) dan satu sebagai kelompok eksperimen (diberi paparan Wi-Fi selama 24 jam/hari selama 30 hari). Parameter yang diamati meliputi tinggi tanaman, jumlah daun, luas daun, dan warna daun. Hasil penelitian menunjukkan bahwa tanaman yang terpapar radiasi Wi-Fi mengalami perbedaan signifikan dalam aspek pertumbuhan, terutama pada penurunan tinggi dan luas daun dibandingkan dengan kelompok kontrol. Penelitian ini memberikan kontribusi dalam memahami dampak ekologis dari perangkat telekomunikasi dan membuka ruang diskusi untuk kajian lebih lanjut mengenai keamanan lingkungan biologis dalam era digital.
Keywords: Wi-Fi, Radiasi Elektromagnetik, Capsicum Annuum, Pertumbuhan Tanaman, Morfologi
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| Corresponding Author (Faqih Ahmad Fadhilah)
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36 |
Energy and Environmental Physics |
ABS-40 |
Rainfall Changes in the Northern Region of Aceh Ahmad Farhan (a*), Muhammad Syukri (b), Saumi Syahreza (b), Taufan Hidayat (c)
a) Graduate School of Mathematics and Applied Science, Syiah Kuala University, Banda Aceh, 23111, Indonesia
*Email: farhan[at]usk.ac.id
b) Department of Physics, Faculty of Mathematics and Natural Sciences, Syiah Kuala University, Banda Aceh, 23111, Indonesia
c) Department of Agrotechnology, Faculty of Agriculture, Syiah Kuala University, Darussalam, Banda Aceh 23111, Indonesia
Abstract
Abstract. The Northern Region of Aceh (Aceh Bagian Utara) is located at the northern tip of Sumatra Island, with coordinates bordered by the Indian Ocean to the west and the Malacca Strait to the north. Previous studies reported that rainfall (RF) during the 2010-2019 period increased compared to the 2000-2009 period. However, these studies did not explain whether this increase is significant or when the change began. This study aims to address these questions. Rainfall data for a 30 year period (1995-2024) were obtained from the Sultan Iskandar Muda Meteorological Station and the Aceh Climatology Station. The data were analyzed using various statistical methods, allowing for comparison of the results from each method. The analysis revealed that the data were not normally distributed, and therefore, non-parametric statistical methods were used for further analysis. The Mann-Kendall test yielded a Z value of -0.018, which is within the acceptance region of Ho, indicating that no significant trend in rainfall changes was found. Robust regression resulted in a trend line equation with a relatively small slope, with a coefficient of determination 0.3676. The 5-year Moving Average graph shows a slight increase in rainfall after 2012. However, this increase is not strong enough to be considered a permanent trend. Based on the three analytical approaches, it is concluded that no significant trend in annual rainfall increase or decrease was observed in the Northern Region of Aceh during the period of 1995-2024. The observed annual fluctuations are more influenced by natural atmospheric variability, such as extreme ENSO and IOD events, and other equatorial atmospheric instabilities, making it impossible to definitively determine when the increase in rainfall began.
Keywords: Climate Change, ENSO, IOD, Mitigation, Adaptation, Mann-Kendall
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| Corresponding Author (Ahmad Farhan)
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37 |
Energy and Environmental Physics |
ABS-44 |
Analysis of Lenard^s Effect on The Sedudo Siraman Tradition in Beauty Aestetics Myth Nuraeni Asriyanti, Ngurah Ayu Nyoman Murniati, Achmad Buchori
Education Management
Universitas PGRI Semarang
Abstract
Sedudo waterfall is believed to have mystical powers. The sedudo siraman tradition has always been carried out routinely at the beginning of the month of syuro by the people of Nganjuk since the time of the Majapahit Kingdom. The myth of eternal youth as a result of the siraman ritual at Sedudo waterfall is logical if there is scientific evidence. The lenard effect occurs in the phenomenon of electric charge separation when water is separated aerodynamically. The resulting lenard ions are negatively charged and float in the air. The resulting air can change the way the brain works because blood flow and serotonin level increase. Analysis of the light spectrum, electron kinetic energy, and radio frequency are associated with positive human emotions so that they have an impact on youth. Systematic literature review is used in qualitative research of the ethnophysical type so that the concept appears concrete and easy to understand.
Keywords: lennard^s effect, siraman tradition, myth
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| Corresponding Author (Nuraeni Asriyanti)
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38 |
Energy and Environmental Physics |
ABS-46 |
WATER POLLUTION LEVEL OF THE BANTEN BAY BASED ON SOME PHYSICAL OCEANOGRAPHY PARAMETERS Nyoman MN Natih (a), Dewi Cahya Gustilawati (a), I Wayan Nurjaya (a), Yuli Naulita (a), Risti Endriani Arhatin (a), Mochamad Tri Hartanto (a), Sulistiono Sulistiono (b*), Aries Asriansyah (b), Mulyono S Baskoro (c)
a) Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University, 16680, Bogor.
b) Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University, 16680, Bogor.
c) Department of Fisheries Resources Utilization, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University, 16680, Bogor
Abstract
Anthropogenic activities around the waters of Banten Bay can bring polluted waste into the waters, affecting water quality. Determination of the water quality status is needed to estimate the condition of water pollution. This study aims to determine the pollution level of Banten Bay water by measuring several seawater physical parameters. Primary and secondary data from six research locations were used for 4 years (2019-2022). Parameters analyzed included temperature, transparency, turbidity, and total suspended solids (TSS). The analysis results were compared with the quality standards based on the Gov. Reg. No. 22 of 2021. Based on the observations of temperature (25.1-39ᵒ-C), transparency (0.05-10 m), turbidity (0.24-380 NTU), TSS (0.4-742 mg/l), shows that some of the parameters are still below the quality standards, while some parameters are not in accordance with the water quality standards. Based on the results of calculating the water pollution index, Banten Bay has a lightly polluted category (1.315-4.490).
Keywords: Banten Bay, physical parameters, pollution index, standards, water quality
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| Corresponding Author (sulistiono sulistiono)
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39 |
Energy and Environmental Physics |
ABS-307 |
Mapping the Potential for Development of Point Absorber Wave Energy Generation in the Sumatran and Javanese Seas Massus Subekti1*, M. Rif^an2, Agus Adiarta3, Aris Sunawar4, Bhakti Yudo Suprapto5
1,4 Electrical Engineering Faculty of Engineering, Universitas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta, Indonesia
2 Information Systems, Faculty of Science and Technology, Universitas terbuka, Jl. Pd. Cabe Raya, Pd. Cabe Udik, Kec. Ciputat, Kota Tangerang Selatan, Banten, Indonesia
3 Electrical Engineering Faculty of Engineering and Vocational, Universitas Pendidikan Ganesha Jl. Dewi Sartika No.12a, Kaliuntu, Kec. Buleleng, Kabupaten Buleleng, Bali, Indonesia.
5 Electrical Engineering Faculty of Engineering, Universitas Sriwijaya, Jl. Raya Palembang - Prabumulih No.KM. 32, Indralaya Indah, Kec. Indralaya, Kabupaten Ogan Ilir, Sumatera Selatan, Indonesia
Abstract
It has been 67 years since Indonesia^s independence, but equal distribution of access to electrical energy has not yet been fully felt by all Indonesian people living in the Frontier, Outermost and Disadvantaged (3T) areas. This condition occurs as a consequence of the vast territory of the archipelago, the uneven distribution of electricity generation sources, and generating capacity which is unable to keep up with the high rate of growth of electrical energy, this clearly hampers economic growth and can reduce the nation^s competitiveness. In order to solve this problem, a power plant is needed that can utilize local potential as a source of electrical energy. One source of electrical energy that has great potential is ocean wave energy, because this energy source is quite abundant in 3T areas, islands and coasts, has a high energy density, unlimited potential area, and is included in the category of environmentally friendly and renewable energy sources. However, the use of this energy still has weaknesses in terms of the low stability of the voltage and power produced and the lack of a comprehensive ocean wave energy potential map. The efforts made are to build a hybrid power plant that combines a sea wave power plant that utilizes vertical wave energy into motion energy to pump sea water into a pressurized reservoir to spin a water turbine connected to an electric generator with abundant wind energy as well as carrying out mapping. potential application in Indonesian seas. In this article, we will present the potential for ocean wave energy in the Java and Sumatra seas.
Keywords: Wave Energy, Point Absorber, Sumatra, Java
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| Corresponding Author (Massus Subekti)
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40 |
Energy and Environmental Physics |
ABS-53 |
Analysis The Future of Palm Tree Plantation Tower For Telecommunication Purposes Diena Noviarini, Eko Arif Syaefudin, Aulia virlina, Raihaanah Nabiilah Rahmaniyah, Agung Dimayana,Akhmad Yamani
Faculty of Economic and Bussiness, State University of Jakarta
Abstract
The collaborative product research program activities of this faculty are in the form of utilizing and analyzing the future of palm plantation system as a development of clean and affordable energy. The concept of this activities of intelligent processing of the future of palm plantation system by utilizing fruit, fronds and harvest residues gradually into a source of clean energy that is up to date. The processing of the future of palm plantation system uses a series of information technologies such as a platform, including the Internet of Things, Big Data, Cloud computing in physics and artificial intelligence in mathematics in programming data to process and transform it to the efficient and comfortable information system for users. Finding a solution of which is economical and sustainable, a virtual power plant is formed from diesel generators with a capacity of 5.6 MW and a waste of palm tree plants as power generating plant with a capacity of 1 MW have been created. With the aim of introducing and familiarizing this information technology system using multiple devices such as smartphones and personal computers to farmers and entrepreneurs of the future of palm plantation system, it is hoped that it can improve the conditions and processing capabilities to become a profitable business in terms of cost and technological efficiency as it is required by Islamic banking and telecommunication stakeholders. The research instrument uses data from the Ministry of Forestry for statistical data and the sample used is the use of a system prototype. The Research Team has conducted preliminary observations and interviews regarding the need for an information technology infrastructure to be implemented in Jambi Province, in order to improve the welfare of Islamic entrepreneurs of the future of palm plantation system. The final result of the first year^s research is the information technology system for the future of palm plantation system.
Keywords: Internet of Things, Big Data, Cloud computing,artificial intelligence, welfare
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| Corresponding Author (Diena Noviarini)
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41 |
Energy and Environmental Physics |
ABS-66 |
Interactions of Terrestrial and Marine Heatwaves in the Coastal Zone of Southern Java Halimurrahman (a*, b), Zahidah Hasan (a), Ginaldi Ari Nugroho (b), Asif Awaludin (b), Ibnu Fathrio (b), Mochamad Furqon Azis Ismail (b)
(a) Environmental Sciences Program Study, Graduate School of Universitas Padjadjaran, Indonesia
*halimurrahman24001[at]mail.unpad.ac.id
(b) Research Center for Climate and Atmosphere, National Research and Innovation Agency, Indonesia
Abstract
Coastal regions are increasingly exposed to extreme thermal events both on land and at sea, including terrestrial heatwaves (THWs) and marine heatwaves (MHWs), under intensified climate variability. Along the southern coast of Java, MHWs are influenced by intraseasonal, interannual, and broader regional-to-global variability, including patterns in the Indian and Pacific Oceans. While MHWs have been relatively well studied, THWs remain poorly documented in this region. This study investigates the frequency and overlap of THWs and MHWs along the southern coast of Java, particularly in Pameungpeuk, West Java, from 2000 to 2022. Using satellite-based sea surface temperature and ground-based air temperature data, we identified 23 co-occurring events, with durations often exceeding 10 days. MHWs peaked during the rainy season, while THWs were more frequent in transitional months. Notable meteorological anomalies accompany these extremes: reduced surface wind speeds, increased land temperatures (up to 1.4oC), and varying humidity responses-positive during MHWs and negative during THWs. These patterns highlight the complexity of land-sea thermal interactions and underscore the need for integrated climate risk assessments in coastal regions.
Keywords: Java Island, Climate change, Terrestrial heat waves, Marine heat waves, Interannual variability
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| Corresponding Author (Halimurrahman Halimurrahman)
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42 |
Energy and Environmental Physics |
ABS-70 |
Electrodeposition of Trimetallic PtSnNi and its Application as Electrocatalyst in Ethanol Electrooxidation Chika Shafa Maura (a), Akrajas Ali Umar (b), Setia Budi (c*)
(a) The Center for Science Innovation, No. 40 BC Arva Building, Jl. RP. Soeroso, Jakarta Pusat 10350, Indonesia
(b) Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan
Malaysia, Selangor 43600, Malaysia
(c)Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta Timur 13220, Indonesia
*setiabudi[at]unj.ac.id
Abstract
Platinum (Pt) is widely used as an electrocatalyst in fuel cells due to its high catalytic activity. However its high cost and susceptibility to poisoning limit its practical applications. To overcome these limitations, trimetallic catalysts such as PtSnNi offer improved catalytic performance through synergistic effects. Tin (Sn) enhances ethanol electrooxidation (EOR) by modifying the electronic structure of Pt and facilitating oxygen containing species adsorption. Nickel (Ni), when combined with Sn, promotes CC bond cleavage and CO desorption from the Pt surface. In this study, PtSnNi electrocatalysts were synthesized on a Cu substrate via potentiostatic electrodeposition. The resulting catalysts were characterized using SEM, EDX, and XRD, while electrochemical performance was evaluated via EIS, CV, LSV and CA. The deposited PtSnNi formed cluster like structures with partial agglomeration and an avarage particle size of 337.33 nm. EDX confirmed elemental compositions of Pt (70.31%) Sn (28.85%) and Ni (0.84%), and XRD revealed a hexagonal crystal structure. The catalyst demonstrated excellent electrochemical properties with a low charge transfer resistance (4.94 ohm), high catalytic activity (29.66 mA/cm2), a tafel slope of 140 mV/dec, and good long term stability. These results confirm the potential of PtSnNi as a promising electrocatalyst for ethanol electrooxidation.
Keywords: Electrodeposition, electrocatalyst, ethanol electrooxidation, PtSnNi
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| Corresponding Author (Chika Shafa Maura)
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43 |
Energy and Environmental Physics |
ABS-88 |
Three plausible ways to improve performance of seawater battery for low budget electrical energy storage system (EESS) in particular for developing countries Victor Christianto, Florentine Smarandache, Yunita Umniyati
Dept. of Forestry, Malang Institute of Agriculture, East Java
Dept. of Mathematics and Sciences, Univ. of New Mexico, Gallup, NM, USA
Mechatronics Engineering, Swiss German University, Indonesia
Abstract
It is known that renewable energy sources are growing fast in cities to mitigate greenhouse gas emissions in response to climate change and fossil resource challenges. Seawater batteries offer an attractive alternative for EESS due to the abundance and low budget of seawater, especially for coastal regions and developing countries. However, their performance often suffers from low energy density, poor cycle life, and corrosion issues. We consider here three plausible ways to improve SWB performance in the near future. Nonetheless, further research is recommended. Among other things discussed here, we also present a summary of cost-benefit analysis for implementing in-situ seawater battery for EESS, as there are interests on such a SWB technology especially in recent years.
Keywords: Renewabel Energy, Seawater, EESS, Battery, SWB performance
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| Corresponding Author (Yunita Umniyati)
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44 |
Energy and Environmental Physics |
ABS-89 |
DEVELOPMENT OF PYROLYSIS CHAMBER HEATING SYSTEM WITH TEMPERATURE CONTROL BASED ON ESP32 FOR OIL PRODUCTION FROM PLASTIC PET WASTE Matthew Savio Kurniawan, Yunita Umniyati, Eka Budiarto, Diah Indriani Widiputri, Avita Ayu Permanasari, Victor Christianto
Mechatronics Engineering, Swiss German University, Indonesia
Mechanical Engineering, Malang State University, Indonesia
Dept. Forestry, Malang Institute of Agriculture, Indonesia
Abstract
Plastic waste, particularly polyethylene terephthalate (PET), poses a growing environmental concern due to increasing household consumption of plastic-based products. Pyrolysis presents a promising thermochemical conversion method to recycle PET waste into valuable products, such as fuel oil. This study focuses on the development of an efficient and controlled pyrolysis chamber heating system utilizing the ESP32 microcontroller platform to monitor and regulate temperature in real-time, ensuring process stability and consistent product quality. Experimental testing was conducted to evaluate the system^s performance under controlled conditions. The results demonstrate that the system successfully converts PET waste into pyrolysis oil with characteristics suitable for vehicle fuel. This approach highlights the potential of smart temperature-controlled pyrolysis as a sustainable and efficient solution for mitigating PET plastic waste and generating alternative energy sources.
Keywords: Pyrolysis, PET Waste Conversion, Electric Furnace, Temperature Control, ESP32
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| Corresponding Author (Yunita Umniyati)
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45 |
Energy and Environmental Physics |
ABS-102 |
Synthesis and Characterization of \(FASnI_{3}\) and \(CsSnI_{3}\) as Active Layers in Perovskite Solar Cells Rossyaila Matsna Muslimawati \(^{(a)}\), Natalita Maulani Nursam \(^{(b*)}\), Widhya Budiawan \(^{(b)}\), Muhammad Haris Mahyuddin \(^{(c,d*)}\) and Ahmad Nuruddin \(^{(c,d*)}\)
a) Doctoral Program of Engineering Physics, Faculty of Industrial Technology, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 40132, Indonesia
b) Research Center for Electronics, National Research and Innovation Agency, Bandung, 40132, Indonesia
c) Quantum and Nano Technology Research Group, Faculty of Industrial Technology, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 41032, Indonesia
d) Research Center for Nanosciences and Nanotechnology (RCNN), Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 41032, Indonesia
Abstract
Tin-based perovskites have gained significant attention as promising lead-free perovskite solar cells (PSCs) due to environmental concerns. Among tin-based perovskites, formamidinium tin triiodide (\(FASnI_{3}\)) and cesium tin triiodide (\(CsSnI_{3}\)) exhibit strong potential for efficient solar energy harvesting, owing to their favorable optoelectronic properties. This study investigates the synthesis and characterization of \(FASnI_{3}\) and \(CsSnI_{3}\) perovskites using a one-step precursor deposition method. X-ray diffraction (XRD) analysis confirms the orthorhombic phase of \(FASnI_{3}\), while \(CsSnI_{3}\) exhibits peaks corresponding to \(SnI_{2}\) and \(Cs_{2}SnI_{6}\). Optical characterization reveals bandgaps of 1.42 and 1.28 eV for \(FASnI_{3}\) and \(CsSnI_{3}\), respectively, with the \(CsSnI_{3}\) demonstrating extended absorption toward longer wavelengths. The photovoltaic performance of Sn-based PSCs with an architecture of ITO/PEDOT:PSS/perovskite/\(C_{60}\)/Ag was simulated using the SCAPS-1D code. The \(FASnI_{3}\)-based device achieved a power conversion efficiency (PCE) of 19.2% (\(V_{OC}\) = 0.95 V, \(J_{SC}\) = 28.27 mA/\(cm^{2}\), FF = 71.04%), while the \(CsSnI_{3}\)-based cell showed a PCE of 18.64% \(V_{OC}\) = 0.77 V, \(J_{SC}\) = 31.38 mA/\(cm^{2}\), FF = 77%). These findings highlight the potential of Sn-based perovskites for high-performance, eco-friendly photovoltaic devices.
Keywords: Tin-based perovskite, \(FASnI_{3}\), \(CsSnI_{3}\), bandgap, crystal structure, SCAPS-1D.
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| Corresponding Author (Rossyaila Matsna Muslimawati)
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46 |
Energy and Environmental Physics |
ABS-104 |
Structural Integrity Assessment of a Pyrolysis Incinerator Chamber Using FEM in Support of Green Environmental Technologies Aam Amaningsih Jumhur, Sirojuddin, Syefty Muthiara Sukma, Yermia Bima Garendi
Universitas Negeri Jakarta
Abstract
The background of this study is the increasing demand for sustainable waste management solutions, which has accelerated the development of pyrolysis incinerators as part of green environmental technologies. These systems require a structurally robust primary chamber capable of withstanding high thermal and mechanical loads. Conventional designs often fail under such conditions, necessitating further analysis to ensure durability and safety. This study employs Finite Element Analysis or FEA to evaluate the structural performance of the primary chamber of a pyrolysis incinerator. The chamber consists of a 50 mm refractory concrete lining and a 3 mm SS400 steel casing. A 3D CAD model was developed and simulated using ANSYS Mechanical 2021R1, incorporating internal pressure loading or 0.5 MPa and fixed boundary conditions. Mesh sensitivity analysis was conducted to ensure numerical accuracy. The results show that the maximum von Mises stress is 7.357 times 10 minus 4 MPa, which is significantly below the yield strength of SS400, yielding a safety factor exceeding 300. The maximum deformation recorded is 3.85 mm, equivalent to 0.19 percent of the chamber diameter. Mesh convergence was validated through the strain energy error index, confirming the stability of the solution. In conclusion, the structural integrity of the chamber is validated under pyrolysis operating conditions. The low stress and deformation levels indicate the robustness of the design, with potential for optimization in material usage for eco efficient applications. This supports its implementation in green environmental technologies aimed at promoting sustainable and resilient waste to energy systems. Further studies are recommended, including coupled thermal mechanical analysis and experimental validation.
Keywords: Pyrolysis, Finite Element Method, Structural Analysis, Incinerator, Green Technologies, Thermal Stress
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| Corresponding Author (Aam Amaningsih Jumhur)
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47 |
Energy and Environmental Physics |
ABS-167 |
Resrad Parameter Sensitivity Simulation to Ascertain Local Parameters for Safety Assesment on Bangka Island Andry Setiawan(a), Mersi Kurniati(a), Dadong Iskandar(b), Hendra Adhi Pratama(b), Yuli Purwanto(b), Zico Pratama Putra(c)
a. Physics Departement, Faculty of Mathematics and Natural Science, IPB University
b. Research Center for Nuclear Material and Radioactive Waste Technology, National Research and Inovation Agency (BRIN)
c. Faculty of Information Technology, Nusa Mandiri University, Depok
Abstract
Tin slag and waste generated by tin processing often contain Technologically Enhanced Naturally Occurring Radioactive Materials (TENORM), which pose significant radiation risks to workers, the public, and the environment. To mitigate these risks, the development of a dedicated landfill facility is crucial for managing the radiological impact. This study analyzes the implications of storing TENORM waste, both prior to and following the construction of a landfill. The challenge of TENORM management persists, primarily due to the presence of long-lived radionuclides such as uranium-238 (U-238), thorium-232 (Th-232), and potassium-40 (K-40), which are often inadequately handled by industry. To address this, a landfill design was proposed and evaluated using RESRAD-Offsite 4.0 software, focusing on radiation safety and long-term exposure risks. To optimize safety and resource allocation, the study also investigated the sensitivity of RESRAD input parameters in estimating radiation dose and cancer risk. A total of 194 parameters were simulated, with approximately half exerting a significant influence on dose estimations. For example, the U-238 animal product intake transfer factor showed negligible sensitivity, affecting dose estimates by just 0.00001 mSv/year over 1,000 years. Conversely, precipitation demonstrated moderate sensitivity due to its effect on radionuclide leaching. Most notably, the fraction of time spent indoors on contaminated ground exhibited extremely high sensitivity, with dose estimates increasing by more than 11,000%. These findings underscore the importance of precise parameter selection in risk modeling and support the development of safer, more effective TENORM waste disposal strategies.
Keywords: Radiation Dose, Safety Assessment, Resrad Offsite, Parameter Sensitivity, TENORM
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| Corresponding Author (Andry Setiawan)
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48 |
Energy and Environmental Physics |
ABS-170 |
Physical Properties of Sedimen in Ciliwung River as Proxy Indicator of Anthropogenic Activities Kartika Hajar Kirana (a,b*), Sonia Fitria Lengga Kencana (a), Dini Fitriani (a), Eleonora Agustine (a)
a) Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran
Jalan Raya Bandung-Sumedang Km. 21 Jatinangor 45363, Indonesia
*kartika[at]geophys.unpad.ac.id
b) Citarum Research Center, Universitas Padjadjaran
Jalan Dipatiukur 35 Bandung 40132, Indonesia
Abstract
The Ciliwung River in the middle zone of segment III is one of the river areas in West Java that is experiencing a decline in environmental quality. Intensive human activities have implications for pollutant input in the form of anthropogenic materials that could affect the condition of the Ciliwung River. This research was conducted to identify the condition of the Ciliwung River regarding the influence of anthropogenic materials on river sediments, particularly through the abundance of magnetic minerals via the identification of physical properties in the sediment. Measurement of physical properties was carried out using susceptibility, EC, TDS, and hysteresis parameters, along with chemical parameters such as pH in river sediments. The results revealed that the susceptibility value ranged from 893.31x10-8 to 3.712.11x10-8 m3/kg, with susceptibility frequency dependent less than 4 per cent, indicating multidomain grains and hysteresis parameter results containing magnetite, which suggested a contribution from anthropogenic materials. Meanwhile, the results of EC, TDS, and pH measurements in both sediment and hydrology remain within the standards established based on their function.
Keywords: river sediment, magnetic susceptibility, anthropogenic
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| Corresponding Author (Kartika Hajar Kirana)
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49 |
Energy and Environmental Physics |
ABS-191 |
Machine Learning for Real-Time Environmental Monitoring and Air Quality Prediction Acep Purqon(a*), Irfan Dwi Aditya(b), Berlian Oka Irvianto(c), Sparisoma Viridi(d)
a) Earth Physics and Complex System Research Division
b) Physics of Instrumentation and Computation Research Division
c) Master Program in Physics
d) Nucler Physics and Biophysics Research Division
a,b,d) Data Science in Physics Specialization
Physics Department, Institut Teknologi Bandung
Abstract
We are developing a method to analyze real-time environmental data using machine learning. The data is collected from sensors that measure carbon dioxide (CO₂-) concentration, temperature, humidity, wind speed and direction, and fine particle levels (PM2.5). The sensor data is transmitted using the public MQTT broker at mqtt://mqtt.eclipseprojects.io. Our goal is to detect patterns in the data, understand the relationships between environmental variables, and predict changes in air quality and climate conditions. We use several machine learning techniques, including regression, classification, and deep learning. Before training the models, we clean the data to handle noise and missing values, and select key features to improve model accuracy. Model validation is also performed to ensure reliable predictions. The analysis accompanied with visualization is expected to provide insights that can support environmental policy and help address climate change.
Keywords: Machine learning- environmental data- CO₂-- PM2.5- temperature- humidity- wind- MQTT- air quality prediction
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| Corresponding Author (ACEP PURQON)
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50 |
Energy and Environmental Physics |
ABS-192 |
Effect of CO2 enrichment on the productivity and quality of sunflower (Helianthus annuss) microgreens Trinitaty Bulan Marito Hutabarat (a*), Acep Purqon (b), Ramadhani Eka Putra(c)
a,c) School of Life Sciences and Technology, Institut Teknologi Bandung
b) Faculty of Natural Sciences and Technology, Institut Teknologi Bandung
Abstract
Increasing CO2 concentration is one of the major environmental problems in recent time. However, increasing amount of CO2 could have a beneficial effect on the certain plants related to the photosynthesis activities. In this study, the effect of CO2 enrichment was observed on the productivity and quality of micro-greens, a new food sources with high health benefit, of sunflowers (Helianthus annuss). The micro-greens were planted with 4 different growth media originated from organic wastes namely P1 (50% compost + 50% cocopeat), P2 (100 % insect frass), P3 (100 % vermicompost), P4 (90% compost + 9% vermicompost + 1% insect frass). The plants divided into two groups, with CO2 enrichment (1000 to 1500 ppm) and without. The result showed that CO2 enrichment improved the germination rate, leaves sizes, plant height, harvested weight, and water and chlorphyll content while plant growth under normal CO2 condition had better Vitamin C content. Among growth media, the best result was recorded in P1 group. Based on the result, it could be concluded that CO2 enrichment improve the productivity and several quality parameters of the sunflowers^ micro-green. This result has the potency to be applied as a baseline information to develop a natural way to reduce the air pollution by means of plant^s photosynthesis and organic waste management.
Keywords: CO2 enrichment, micro-greens, productivity, sunflower
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| Corresponding Author (ACEP PURQON)
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51 |
Energy and Environmental Physics |
ABS-220 |
Effectiveness of Mineral Zeolite and Activated Carbon in Lowering the pH Level of Sidomulyo Batik Industry Effluent in Batu City Moch. Abdul Rachman1, Ridho Arief Al Rasyid1, Muhammad Alif Syibli1, Naufal Maarif2
1 SMAS AR ROHMAH DAU, 65151, Malang, Jawa Timur
2 Program Studi Biologi, FMIPA, Universitas Brawijaya, Jl. Veteran, Malang 65145, Jawa Timur
Abstract
Liquid waste represents a significant global issue that disrupts the equilibrium of aquatic ecosystems. Liquid waste from batik processing constitutes a significant source of liquid waste in Indonesia. This liquid waste poses significant hazards due to its composition, which may include synthetic dyes characterized by complex aromatic chemical structures. This study evaluates the effectiveness of zeolite minerals and activated carbon in reducing the pH value of wastewater from the Sidomulyo batik industry in Batu City, which contains hazardous synthetic dyes. The adsorption method was employed, varying the adsorbent mass (0, 5, 10, 25 grams) and maintaining a contact time of 6 hours. A soil pH meter with an accuracy of (Plus-min)0.5 was utilized to monitor pH changes. The findings indicated that neither adsorbent significantly altered the effluent pH (variations of (plus-min) 0.2), although both were effective in decreasing contaminants, specifically heavy metals (zeolite) and organic compounds (activated carbon). Furthermore, mass variation did not significantly affect pH, likely due to the adsorption process prioritizing the binding of specific pollutants over H(plus) ions. The performance of zeolite and activated carbon in maintaining pH stability is comparable, as both materials function optimally within specific pH ranges. This study advocates for the utilization of a high-accuracy pH meter to enhance analytical precision and suggests the activation of the adsorbent with acid when a targeted pH reduction is necessary.
Keywords: Zeolite, activated carbon, batik waste, pH, organic contaminants.
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| Corresponding Author (Mochammad Abdul Rachman)
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52 |
Energy and Environmental Physics |
ABS-225 |
Improving The Handling of Humanitarian Disaster in The Indonesian Ring of Fire by Utilizing The Detection of Output From Banten Underwater Mountain Diena Noviarini, Eko Arif Syaefudin, Aulia virlina, Raihaanah Nabiilah Rahmaniyah, Agung Dimayana,Dewi Arianti,Akhmad Yamani
State University of Jakarta, University of Indonesia, University of Gunadarma
Abstract
The activities of this International Collaboration product program are in the form of utilizing the Internet of Things as the development of information technology with the concept of Improving Humanitarian Disaster Management in the Indonesian Ring of Fire Area by Utilizing Lava Output Detection from the Banten Undersea Mountains into the latest information technology. This application uses a series of information technologies as a platform, including the Internet of Things, Big Data, Cloud computing and artificial intelligence to process and transform the natural disaster early warning system so that the application is efficient and convenient for users. The aim is to introduce and familiarize the application of information technology using several devices such as smartphones and personal computers to village communities around the ring of fire area, it is hoped that this can improve the conditions and capabilities of natural disaster data processing into appropriate information to prevent human casualties. Early indications of earthquake disaster information and there has never been a complete visual information media about mapping using GIS data. The research instrument uses data and samples used is the use of application prototypes. The Research Team has conducted initial observations and interviews regarding the need for information technology infrastructure that will be implemented in the southern part of Banten Province in order to improve humanitarian disaster management in the Indonesian ring of fire area. The final result of the first year^s activities will be a training on the information system technology system in the humanitarian disaster handling system so that the government and independent learning students can access the humanitarian disaster handling system that is implemented into the curriculum and quality standards that are registered in their rights so that consumer users are able to adapt the model of scientific and technological.
Keywords: Internet of Things, Big Data, Cloud computing,artificial intelligence,process
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| Corresponding Author (Diena Noviarini)
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53 |
Energy and Environmental Physics |
ABS-248 |
Techno Economics Analysis of Off-Grid Photovoltaic (PV) Systems in a Remote Area in Indonesia for Rural Village Electrification Airin Marsaulina Hutabarat (1*), Rinaldy Dalimi (2), Budi Sudiarto (3)
1) Doctoral Program, Electrical Engineering Department, Universitas Indonesia, Kampus UI Depok, 16424, Indonesia
*airin.marsaulina[at]ui.ac.id
2) Research Group for Energy Transition (REGRET), Electrical Engineering Department, Universitas Indonesia, Kampus UI Depok, 16424, Indonesia
3) Smart Grid Research Group (SGRG), Electrical Engineering Department, Universitas Indonesia, Kampus UI Depok, 16424, Indonesia
Abstract
Indonesia is an archipelago country with over 17,000 islands spread across the equator with abundance resource of solar energy potential. However, due to its challenging geographical and terrain, many rural villages in Indonesia remains without electricity access. Hence it inhibits people in such remote islands to increase their social economic welfare. In efforts to reach out the last miles of 100% electrification coupled with the Energy Transition Pathway to achieve Net Zero Emission by 2060, utilizing the renewable resources such as solar energy is the key solution. This paper aims to assess the off-grid photovoltaic (PV) systems for rural village electrification in Indonesia. The study focusses on analysing various configuration, namely diesel generator as the base scenario, solar PV only, solar PV with battery, solar PV with diesel, and solar PV with battery and diesel. The levelized cost of energy (LCOE) approach is utilized to assess the cost-competitiveness of the off-grid PV systems compared to the diesel generator as a typical rural electrification solution in Indonesia. The study uses Homer software to model and evaluation these different scenarios.
Keywords: Rural Electrification, Off-Grid, Remote Area, Solar Photovoltaic, Levelized Cost of Electricity (LCOE)
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| Corresponding Author (Airin Marsaulina Hutabarat)
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54 |
Instrumentation and Computational Physics |
ABS-260 |
ANALISIS KESALAHAN PEMBACAAN ENERGI PADA METER kWh ELEKTRONIK 1-FASA 2-KAWAT MEREK HEFFTRON TERHADAP VARIASI FAKTOR DAYA KAPASITIF Rafi Rizky Rabbbani (a*), Ahmad Zatnika Purwalaksana (a*), Lutfi Fitria Ningsih (b*)
a) Fisika, Universitas Negeri Jakarta, Jalan Rawamangun Muka 1 , Jakarta 13220, Indonesia
b) Unit Pengelola Metrologi DKI Jakarta, Jalan Perintis Kemerdekaan 1, Jakarta 14240, Indonesia
Abstract
Accuracy in electrical energy measurement is a critical factor in ensuring efficiency in power distribution systems and fairness in billing processes. This study aims to investigate the influence of capacitive power factor variation on the energy reading error of single-phase two-wire electronic kWh meters of the Hefftron brand. Experiments were conducted using the ZERA MT551 as the power simulation source and the ZERA TPZ 308-6-2 as the energy reference standard. Leading phase angles were applied to simulate power factor conditions ranging from cos φ- = 1 to approximately 0.7. The resulting data showed a consistent trend of increasing negative deviation in energy readings as the power factor decreased. Under extreme capacitive conditions, the maximum recorded reading error reached -0.22%. These findings indicate that non-resistive, particularly capacitive, loads can significantly affect the accuracy of energy meters. The results suggest a need for further evaluation of electronic meters performance under non-ideal conditions, and for the development of more adaptive measurement systems that can accommodate modern load characteristics. This study provides technical insight that may inform future improvements in energy meter testing procedures and device design.
Keywords: Electronic kWh meter, capacitive power factor, energy reading error, phase angle, non-resistive load
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| Corresponding Author (Rafi Rizky Rabbani)
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55 |
Instrumentation and Computational Physics |
ABS-262 |
Analisis Proses Kalibrasi Roll Meter Berdasarkan Metode Standar JIS B 7512 2016 Nayla Ramadhani (a*), Mangasi Alion Marpaung (b), Bayu Chandra Hangesthi (b)
a) Program Studi Fisika, FMIPA, Universitas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta Timur, 13220, Indonesia
*ramadhaninayla63[at]gmail.com
b) Balai Besar Standardisasi dan Pelayanan Jasa Industri Kimia, Farmasi, dan Kemasan, Jl. Balai Kimia No. 1, Pekayon, Kec. Ps. Rebo, Kota Jakarta Timur, 13710, Indonesia
Abstract
Kalibrasi merupakan salah satu kegiatan penting dalam memastikan akurasi dan ketertelusuran alat ukur, khususnya roll meter yang banyak digunakan dalam pengukuran panjang di industri. Proses kalibrasi yang tepat akan mempengaruhi ketelitian hasil pengukuran dan keandalan alat dalam aplikasi teknis. Tujuan dari kegiatan ini adalah untuk menganalisis proses kalibrasi roll meter menggunakan Measuring Scale Tape Calibrator (MSTC) berdasarkan standar JIS B 7512 2016. Kalibrasi dilakukan dalam kondisi lingkungan terkontrol dengan suhu sekitar 20 derajat Celcius dan gaya tarik tertentu sesuai jenis bahan roll meter. Proses pengukuran melibatkan beberapa titik nominal dengan jarak kelipatan 1000 mm dan pengulangan untuk meningkatkan akurasi data. Hasil pengukuran menunjukkan bahwa penyimpangan alat ukur meningkat seiring bertambahnya panjang nominal, dengan penyimpangan maksimum sebesar 1,764 mm pada panjang 25.000 mm. Selain itu, ketidakpastian pengukuran yang dihitung untuk setiap titik telah memenuhi standar perhitungan dengan tingkat kepercayaan 95 persen. Meskipun terdapat variasi penyimpangan, hasil kalibrasi masih dalam batas toleransi yang diizinkan sesuai standar JIS B 7512 2016, sehingga roll meter yang diuji dinyatakan layak digunakan. Kegiatan ini memberikan pemahaman penting mengenai penerapan metode kalibrasi yang sistematis dan sesuai standar internasional, serta menekankan pentingnya ketertelusuran pengukuran dalam mendukung pengendalian mutu di sektor industri.
Keywords: Kalibrasi, Roll Meter, Measuring Scale Tape Calibrator (MSTC), JIS B 7512 2016, Ketidakpastian, Pengukuran.
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| Corresponding Author (Nayla Ramadhani)
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56 |
Instrumentation and Computational Physics |
ABS-263 |
Improving Quantum Simulation Efficiency Using Hardware-Adaptable Ansatz Based on Quantum Neural Networks Syawal Adrian Syah, Teguh Budi Prayitno, Yanoar Pribadi Sarwono
Physics Department, Faculty of Mathematics and Natural Sciences, Jakarta State University
Quantum Physics Research Center, National Research and Innovation Agency
Abstract
The current limitations of quantum devices remain a major challenge, including the restricted number of qubits, high levels of noise, and decoherence. These constraints demand the development of efficient quantum circuits (ansatz) to ensure that variational algorithms such as the Variational Quantum Eigensolver (VQE) can operate reliably on near-term quantum hardware. This study aims to develop an effective Hardware-Adaptable Ansatz-Quantum Neural Network (HAA-QNN) architecture. The proposed ansatz leverages ancilla qubits to reduce the need for deep circuit layers, while optimizing its structure and parameters to enhance quantum simulation efficiency. An experimental approach is employed, wherein the performance of the HAA-QNN is tested and evaluated against other ansatz, including the Hardware-Efficient Ansatz (HEA) and the qubit-reused QNN (qrQNN). The evaluation is conducted through ideal simulations using Qiskit and Pennylane, based on three key metrics: ground state energy, Root Mean Square Error (RMSE), and expressibility. The simulation results indicate that HAA-QNN achieves the fastest and most stable convergence toward the ground state energy, yielding final values closest to the exact solution obtained via Full Configuration Interaction (FCI). Furthermore, HAA produces significantly lower RMSE compared to both HEA and qrQNN, and demonstrates high expressibility as indicated by a notable reduction in KL divergence. In addition, HAA responds more efficiently to increased model capacity than the other ansatz. Therefore, HAA-QNN is proven to be a superior ansatz architecture for VQE, offering advantages in energy accuracy, convergence efficiency, and representational flexibility.
Keywords: Quantum simulation, Hardware Adaptable Ansatz, Variational Quantum Eigensolver, Ground State Energy, Expresibility
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| Corresponding Author (Syawal Adrian Syah)
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57 |
Instrumentation and Computational Physics |
ABS-264 |
Pengembangan Model Deep Learning untuk Deteksi Aksi Pencurian Sayid Mahmud Ibadirahman Syah (a*), Haris Suhendar (a), Ilham Fadhil (b)
a) Universitas Negeri Jakarta
Jl. R.Mangun Muka Raya No.11, Rawamangun, Kec. Pulo Gadung, Kota Jakarta Timur, DKI Jakarta 13220
*sayidmahmud060[at]gmail.com
b) PT. Beeja Sejahtera Raharja (PT. Beesar)
Jl. Batu Ampar V No.10, Kec. Kramat jati, Kota Jakarta Timur, Daerah Khusus Ibukota Jakarta 13520
Abstract
Pencurian barang dagangan (shoplifting) menjadi masalah serius di sektor ritel Indonesia, berdampak pada kerugian finansial dan operasional. Penelitian ini mengembangkan sistem deteksi shoplifting berbasis deep learning yang menggabungkan YOLO untuk deteksi objek, HRNet untuk estimasi pose, dan STG-NF untuk analisis anomali perilaku. Sistem dirancang untuk menganalisis video kamera pengawas secara real-time. Proses pengembangan mencakup pelabelan data, pelatihan ulang model, serta integrasi pipeline dari deteksi objek dan pose ke analisis spasio-temporal perilaku. Hasil evaluasi menunjukkan sistem mampu mendeteksi shoplifting secara efektif dan mengurangi ketergantungan pada pemantauan manual. Temuan ini mendukung digitalisasi ritel, meningkatkan keamanan, dan meminimalkan kerugian. Penelitian ini berkontribusi pada pengembangan teknologi pengawasan berbasis AI dan membuka peluang inovasi lebih lanjut dalam keamanan dan analitik video.
Keywords: Shoplifting, Deteksi anomali, Deep learning, YOLO, HRNet, STG-NF, Analitik video
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| Corresponding Author (Sayid Mahmud Ibadirahman Syah)
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58 |
Instrumentation and Computational Physics |
ABS-9 |
A Point-symmetrical Position for Vibration Measurement of Analytical Sieve Shakers Ninuk Ragil Prasasti1, Maharani Ratna Palupi2, Chery Chaen Putri1, Bondan Dwisetyo1, Denny Hermawanto1, Fajar Budi Utomo1
1Research Center for Testing Technology and Standards, National Research and Innovation Agency Republic of Indonesia (BRIN)
2National Standardization Agency of Indonesia
Abstract
A sieve shaker or a sieving apparatus translates the mechanical action of separating coarser, solid particles into finer grains in sectors such as pharmaceuticals and materials engineering. Segregating particles according to their desired sizes enables a more comprehensive and precise analysis. The process of sifting is conducted by utilizing specific mesh types and sizes. The movement of the filtering process is determined by the vibrations generated by the sieve shaker. The sieve shaker requires calibration to ensure the measurement accuracy of the sieving process. Accurate measurements provide the fundamental basis for ensuring the quality and safety of the product. The ISO 16063 part 21 is a standard for secondary vibration calibration. However, the back-to-back method mentioned in the standard is challenging to apply directly to calibrate the sieve shaker due to the unique shape of its body component. Therefore, in this study, we adopt a point-symmetrical position applied in primary vibration calibration in order to perform vibration measurements produced by the sieve shaker. The standard accelerometer B&K 8035 is used as a reference transducer to measure the amplitude of the sieve shaker. The measurement was conducted for the displacement range of 0.2 up to 3.00 mm p-p with the highest measurement uncertainty of 2%.
Keywords: vibration, calibration, accelerometer, sieve shakers
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| Corresponding Author (Ninuk Ragil Prasasti)
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59 |
Instrumentation and Computational Physics |
ABS-265 |
Perancangan dan Uji Kinerja Rangkaian LED Pulser Berbasis BJT untuk Simulasi Pengujian Photomultiplier Ikhsan Rasyidin (a), Mutia Delina (a), Muhammad Jauhar Kholili (b)
a) Program Studi Fisika, FMIPA, Universitas Negeri Jakarta
Jl. Rawamangun Muka Raya, Jakarta 13220, Indonesia
b) Pusat Riset Fisika Kuantum, Badan Riset dan Inovasi Nasional
Gedung 720, KST BJ Habibie, Serpong, Tangerang Selatan, 15314, Indonesia
Abstract
Penelitian ini bertujuan untuk merancang dan mengevaluasi kinerja rangkaian LED pulser yang berbasis Bipolar Junction Transistor (BJT), yang berfungsi sebagai sumber pulsa cahaya terkontrol untuk simulasi pengujian Photomultiplier baik PMT maupun SiPM. Rangkaian ini dibuat agar mampu menciptakan pulsa cahaya dengan durasi sangat cepat, yang menyerupai sinyal dari partikel bermuatan dalam percobaan fisika energi tinggi. Tahapan penelitian mencakup simulasi rangkaian menggunakan perangkat lunak LTSpice, desain layout PCB dengan EasyEDA, serta realisasi fisik rangkaian yang kemudian diuji dengan osiloskop untuk menganalisis karakteristik sinyal keluaran. Hasil pengujian menunjukkan bahwa rangkaian LED pulser dapat menghasilkan pulsa cahaya dengan amplitudo dan durasi yang memenuhi spesifikasi yang diharapkan, serta dapat berfungsi sebagai sumber sinyal alternatif dalam pengujian karakteristik suatu photomultiplier. Penelitian ini diharapkan bisa menjadi acuan dalam pengembangan sistem pengujian detektor optik pada eksperimen fisika energi tinggi.
Keywords: LED Pulser- BJT- Photomultiplier- Simulasi LTSpice- Osiloskop
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| Corresponding Author (Ikhsan Rasyidin)
|
60 |
Instrumentation and Computational Physics |
ABS-267 |
Evaluasi Kinerja Thermohygrometer Melalui Proses Kalibrasi Berdasarkan Standar DKD-R 5-8 2019 Luthfarah Nadiyah Wahyuningtyas (a)*, Anggara Budi Susila (a), Bayu Chandra Hangesthi (b)
(a) Program Studi Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Jakarta, Jl. Rawamangun Muka Raya No.11, Rawamangun, Kec. Pulo Gadung, Jakarta Timur 13220, Indonesia
(b) Balai Besar Standardisasi dan Pelayanan Jasa Industri Kimia, Farmasi, dan Kemasan, Jl. Balai Kimia No.1, Pekayon, Kec. Pasar Rebo, Jakarta Timur 13710, Indonesia
*luthfarahnad25[at]gmail.com
Abstract
Kalibrasi merupakan proses penting dalam memastikan ketertelusuran dan keakuratan alat ukur, termasuk thermohygrometer yang berfungsi untuk memantau suhu dan kelembapan lingkungan laboratorium. Praktik kerja ini dilaksanakan di Balai Besar Standardisasi dan Pelayanan Jasa Industri Kimia, Farmasi, dan Kemasan dengan fokus pada kegiatan kalibrasi thermohygrometer menggunakan prosedur DKD-R 5-8:2019. Kalibrasi dilakukan melalui metode pembandingan terhadap kalibrator bersertifikasi di dalam climatic chamber, dengan titik ukur suhu 20 derajat C, 25 derajat C, dan 30 derajat C pada kelembapan konstan 50 persen RH, serta titik ukur kelembapan 40 persen RH hingga 70 persen RH pada suhu konstan 20 derajat C. Hasil pengolahan data menunjukkan bahwa dua dari tiga thermohygrometer masih berada dalam batas ketidakpastian pengukuran suhu sebesar plus-minus 0,9 derajat C, sedangkan seluruh alat menunjukkan deviasi kelembapan yang melebihi batas ketidakpastian plus-minus 2,5 persen RH. Kondisi ini menunjukkan bahwa performa pengukuran suhu lebih stabil dibandingkan kelembapan, yang dipengaruhi oleh sensitivitas sensor RH terhadap kondisi lingkungan. Melalui kegiatan ini, mahasiswa memperoleh pengalaman langsung dalam proses kalibrasi, perhitungan deviasi, dan evaluasi kelayakan alat berdasarkan standar metrologi, serta memahami pentingnya akurasi pengukuran dalam menjaga validitas hasil laboratorium.
Keywords: kalibrasi, thermohygrometer, suhu, kelembaban, ketidakpastian pengukuran, DKD-R 5-8:2019
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| Corresponding Author (Luthfarah Nadiyah Wahyuningtyas)
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