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Performance Optimization of a Petrochemical Cooling Tower via Fill Replacement: Cleanflow vs Cleanflow Plus
This study investigates the performance improvement of an induced draft, counterflow cooling tower after replacing the existing Cleanflow fill with Cleanflow Plus. One cell (E) was upgraded while four cells (A–D) served as the baseline under CTI ATC-105 procedures. Measurements included outlet temperature, wet-bulb temperature, circulation flow, and fan power. Results show that Cell E achieved a higher cooling range (9.20°C vs. 8.63°C average) and a lower approach (6.29°C vs. 6.87°C average). He...
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CFD-Based Thermohydrodynamic Analysis of Vegetable Oil Lubricants in Journal Bearings
This study investigates the thermohydrodynamic performance of journal bearings lubricated with palm trimethylolpropane (TMP) ester as a biolubricant, compared to conventional engine oil, using computational fluid dynamics (CFD) in ANSYS Fluent. The objective is to evaluate the influence of lubricant type on pressure distribution, load carrying capacity, friction force, and cavitation behavior. The results show that palm TMP ester generates higher hydrodynamic pressure while maintaining a similar...
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Performance Evaluation of a Community-Scale Fiberglass Anaerobic Digester for Biogas and Nutrient Recovery
The management of organic waste using an anaerobic reactor offers the potential for renewable energy production and nutrient recovery. This study evaluates the performance of a 3,000 L fiberglass anaerobic reactor designed to treat a mixture of kitchen waste, cow manure, and water in a 1:1:1 ratio. The process was conducted under mesophilic conditions (30–38 °C) over a 40-day batch cycle. The reactor produced a total of 63.75 m³ of biogas with an average methane content of 59.3%, equivalent to 0...
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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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Comparative Evaluation of Automatic Labeling and Modeling Strategies for Indonesian Sentiment Analysis: Methodology and Performance Evaluation
Latifa, Khoiriya
; Agung Handayanto
; Nur Latifah Dwi M.S
; Rahul Bhandari
; Ton Nguyen Trong Hien
; Doston Pirnazarov
Sentiment analysis is vital for understanding consumer perception, yet Indonesian sentiment classification faces challenges due to labeled data scarcity and computational constraints. This study advances automatic labeling techniques and establishes performance benchmarks for Indonesian text. The research compares two labeling approaches InSet Lexicon and IndoBERT based Hugging Face pipeline on 8,447 Tapera-related opinions. Results show InSet Lexicon produced a highly skewed distribution (89.66...
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Ticket Booking Information System at PERUM DAMRI Ende
Bhiju, Gedofrida Ludfina
; Mando, L.B. Finansius
; Sala, Elvira Esperanza
; Bhiju, Gedofrida Ludfina
; Mando, L. B. Finansius
; Sala, Elvira Esperanza
The development of information technology encourages public service agencies to improve the quality of service through the use of integrated information systems. PERUM DAMRI Ende as a provider of passenger transportation services, still faces problems in delivering information on schedules, routes, fares, and vehicle data management that has not been optimally integrated, thus causing uncertainty for service users. This study aims to design and build a Passenger Transport Vehicle Information Sys...
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Determinasi Pengelolaan Keuangan Mahasiswa Ditinjau dari Tingkat Literasi dan Pola Hidup Konsumtif
Penelitian ini bertujuan untuk menganalisis pengaruh literasi keuangan dan gaya hidup terhadap pengelolaan keuangan mahasiswa STIEPARI Semarang asal Nias. Menggunakan pendekatan kuantitatif eksplanatori, data dikumpulkan dari 100 responden yang dipilih melalui teknik simple random sampling dari populasi 134 mahasiswa aktif asal Nias menggunakan rumus Slovin. Pengumpulan data dilakukan selama periode Januari hingga Februari 2026 melalui kuesioner terstruktur berskala Likert dan dianalisis menggun...
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Pendampingan Aktivitas Fisik bagi Anak Usia Dini untuk Mencegah Sedenteri
Dhuha, Ahad Agafian
; Yogaswara, Andre
; Muhibbi, Muhammad
; Widodo, Agung
; Abubakar, Sayid Fariz Bin Seh
; Firdaus, Mohammad Fajar
Jurnal Inovasi dan Pengabdian Masyarakat Indonesia
Vol 5
, No 2
(2026)
Latar belakang: Tingginya durasi screen time dan rendahnya aktivitas fisik anak usia dini mengakibatkan berbagai penyakit dan gangguan perkembangan motorik pada anak. Kurangnya aktivitas fisik berpengaruh terhadap keterlambatan gerak seperti berjalan dan keterlambatan bicara. Pemberian handphone dalam jangka waktu lama dan kurangnya stimulus oleh keluarga merupakan salah satu penyebab utama terjadinya berbagai gangguan kesehatan dan perkembangan pada anak. Kurangnya aktivitas fisik, tingginya a...
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Gerakan Pilah Sampah dari Rumah: Edukasi Kompos dan Pengelolaan Sampah Organik menuju Gaya Hidup Berkelanjutan
Hidayah, Fitria Fatichatul
; Yuliyanto, Eko
; Saharani, Aqlia
; Damayanti, Diah
; Mirza, Saif Revalindo
; Akmal, Achmad Ridlwan
Jurnal Inovasi dan Pengabdian Masyarakat Indonesia
Vol 5
, No 2
(2026)
Latar belakang: Timbunan sampah rumah tangga di lingkungan permukiman semakin meningkat. Keberadaan sampah yang menumpuk tanpa pengelolaan yang baik dapat menimbulkan dampak buruk berkaitan dengan kesehatan dan kebersihan lingkungan. Di sisi lain, masyarakat belum memiliki kesadaran dan keterampilan yang cukup dalam mengelola sampah rumah tangga. Tujuan: Untuk mengetahui opini terkait gaya hidup berkelanjutan dan meningkatkan pengetahuan tentang pengolahan sampah organik menjadi pupuk kompos seb...
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Experimental Analysis of Voltage and Multi-Point Temperature Distribution in a 6S Lithium-Ion Battery Pack Under Constant Current Loading
Lithium-ion batteries are widely utilized in energy storage applications; however, temperature non-uniformity remains a critical issue affecting performance, safety, and lifespan. This study presents an experimental investigation of the correlation between voltage and multi-point temperature distribution in a 6S lithium-ion battery pack under a constant ±5 A charge–discharge current. Temperature measurements were obtained from three sensor locations to capture spatial thermal variations during o...
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