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Banana Peel-Derived Activated Carbon/MnO₂ Composites for Supercapacitor Electrode Applications
Herwanti, Katarina
; Saptono Nugrohadi
; Muhammad Taufiq Anwar
; Stanislaus Christo Petra Nugraha
; Dail Umamil Asri
; Noening Andrijati
Banana peel waste is an abundant agricultural by-product with high carbon content but remains largely underutilized. This study presents a preliminary investigation into the conversion of banana peel waste into activated carbon and its integration with manganese dioxide (MnO₂) to produce biomass-derived composite electrodes for supercapacitor applications. Activated carbon was prepared by carbonization followed by chemical activation using 30 wt% H₃PO₄, while MnO₂–carbon composites were synthesi...
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Microwave-Assisted Self-Healing of AC-WC Modified with Iron Powder: Mechanical Performance and Healing Rate
Amalia Firdaus Mawardi
; Machsus Machsus
; Dadang Supriyatno
; Achmad Faiz Hadi Prajitno
; Muhammad Fikri Nadhif
; Hazen Masrafat
Conventional asphalt mixtures have limited microwave absorption, reducing the effectiveness of microwave-assisted self-healing. This study evaluates the effect of iron powder (0–10% by mass of fine aggregate) as additional fine aggregate in AC-WC mixtures on mechanical performance and microwave-activated healing behavior. Cylindrical specimens (63 mm × 100 mm; three per mixture) were tested using Marshall Stability and Indirect Tensile Strength (ITS) at 25 °C. Healing efficiency was determined b...
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Prediction of Ground Vibration due to Blasting Activities of Coal Open Pit Mine Near Village Residents Using Multivariate Logarithmic Regression
Prasmoro, Alloysius Vendhi
; Siswanto, Nurhadi
; Santosa, Budi
; Nugraha, Giri Waluyo
; Salleh , Mohd Shukor
Blasting activities are among the most important in mining and can have a negative impact on the environment and surrounding communities, causing disruption and even damaging nearby buildings and infrastructure. If the community protests and demonstrates, mining operations may be shut down, which would be very detrimental to the company. Studies are needed on effective planning to reduce the negative impacts. Ground vibrations measured by Peak Particle Velocity (PPV) are subject to thresholds se...
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DEVELOPMENT OF AN ULTRASOUND PHANTOM WITH MODIFIED VISCOSITY TO SIMULATE HUMAN SOFT TISSUE
Ulin Nuha ABA, M.Si, Muhammad
; Haris Kuspranoto, Abdul
; ., Mugiyanto
; Hadi, Syaikhul
; Satrio Anggono, Christopher Nicolaus
; Ahmad ilham, Gus
; Ulin Nuha ABA, M.Si, Muhammad
; Haris Kuspranoto, Abdul
; ., Mugiyanto
; Hadi, Syaikhul
; Satrio Anggono, Christopher Nicolaus
; Ahmad ilham, Gus
MEDIKA TRADA : Jurnal Teknik Elektomedik Polbitrada
Vol 7
, No 1
(2026)
The diagnostic accuracy and success of ultrasound-based intervention procedures depend heavily on the quality of device calibration and the expertise of medical personnel. The development of ultrasound phantoms that can realistically replicate the acoustic and mechanical properties of human soft tissue is a crucial requirement in medical education and the standardisation of electromedical technology....
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Quantitative Modeling of Change Order Impacts on Cost and Time Overruns in Indonesian Toll Road Infrastructure Projects
Change Orders (COs) are a major challenge in toll road infrastructure projects, often causing cost and time overruns. This study aims to identify key CO drivers and quantify their impacts on project performance in Indonesian toll road projects. A mixed-methods approach was applied, involving qualitative interviews with 35 experts (project managers, consultants, contractors) and quantitative surveys from 75 respondents covering 20 projects implemented between 2015 and 2023. Data analysis employed...
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A CIA-based Sustainable Security Risk Mitigation Model for E-Certificate Systems
Suharsono, Teguh Nurhadi
; Choi , John
; Agusiady , Raden Ricky
; Saepudin, Didin
; Sukadwilinda
; Purwanto, Heri
; Savitri , Peti
; Munastha, Ketut Abimanyu
E-certificates are increasingly adopted across sectors, yet existing studies have not developed an integrated risk mitigation model that combines CIA-based sustainable security with operational and stakeholder perspectives. Current frameworks primarily address isolated technical risks or focus on general PKI security, leaving a gap in holistic modeling tailored to end-to-end e-certificate implementation. This study addresses this gap by proposing a Sustainable Security Risk Mitigation Model for...
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The influence of self-concept conflict and parental influence on emotional and personality-related career decision-making difficulties in special sports class students
This study aims to explore how self-concept conflict and parental influence impact the emergence of emotional and personality barriers in the career decision-making process, specifically among KKO students at SMA Negeri 1 Pengasih. This study employed a quantitative correlational method, involving 108 students as a sample using a saturated sampling technique. Validity was assessed through expert judgment, while reliability was calculated using Cronbach's Alpha. Data were statistically processed...
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INTEGRASI PENGETAHUAN TENTANG MKJP, PERSEPSI DAN SIKAP WANITA USIA SUBUR (WUS) PENGGUNA KONTRASEPSI JANGKA PENDEK TERHADAP PEMILIHAN METODE KONTRASEPSI DI DESA RANDUSARI KECAMATAN PAGERBARANG KABUPATEN TEGAL
Jumlah penduduk di Indonesia terus meningkat, hingga tahun 2018 jumlahnya tercatat 265 juta jiwa. Hal inilah yang mendorong pemerintah membentuk program Keluarga Berencana (KB) untuk menekan pertumbuhan penduduk, salah satunya dengan menggunakan alat kontrasepsi jangka panjang dan obat (MKJP). Namun faktanya, wanita usia subur (WUS) pengguna kontrasepsi jangka pendek lebih banyak dibandingkan dengan pengguna jangka panjang. Tujuan penelitian ini adalah untuk mengetahui tingkat pengetahuan, perse...
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Effect of Printing Speed on the Properties of 3D Printed Products Using Recycled PET Filament
Fitriyana, Deni Fajar
; Agung Efriyo Hadi
; Nugroho Suhodo
; Aldias Bahatmaka
; Januar Parlaungan Siregar
; Tezara Cionita
; Zuhriyan Ash Shiddieqy Bahlawan
; Achmad Yanuar Maulana
Recycled PET has been widely studied for its potential use in 3D printing applications. However, few research has examined how printing speed affects recycled PET filament products' mechanical and physical qualities. This research examines how printing speed influences the physical and mechanical qualities of 3D-printed PET filament goods created from mineral water bottle trash. In this study, filament fabrication is carried out using the homemade pultrusion machine, then the filament is used fo...
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Strengthening the Capacity of PMI Volunteers Through Family Care Training and Field Practice in Nursing Homes
mugiyanto, mugi
; Hadi, Syaikhul
; Yuli Astuti, Anna Kartika
; Hastuti, Diah
; ., mugiyanto
; Hadi, Syaikhul
; Yuli Astuti, Anna Kartika
; Hastuti, Diah
Jurnal Pengabdian Multidisiplin dan Pemberdayaan Masyarakat: Abdikes Trada
Vol 3
, No 1
(2026)
The capacity building program for Indonesian Red Cross Volunteers through integrated family care training with field practice is crucial. The background of this activity is based on the increasing need for elderly health services that require the support of skilled caregivers, while the capacity of volunteers to provide basic assistance in family care is still limited. Therefore, the role of Indonesian Red Cross Volunteers as Cargivers is very important in the quality of life of the elderly, esp...
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