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Sistem Pengendalian Suhu Otomatis pada Modul Termoelektrik Generator untuk Pembangkit Listrik Berbasis Panas Kompor Oli Bekas dengan Motor Stepper
Majalah Ilmiah Momentum
Vol 21
, No 2
(2025)
Pemanfaatan energi alternatif penting untuk mengurangi ketergantungan pada fosil. Panas dari kompor oli bekas dapat dikonversi menjadi listrik melalui Thermoelectric Generator (TEG). Namun, suhu berlebih pada sisi panas TEG menurunkan efisiensi dan mempercepat kerusakan modul. Karena itu, diperlukan sistem pengendalian suhu agar kinerja dan umur pakai TEG tetap optimal. Penelitian ini bertujuan untuk merancang dan mengimplementasikan sistem pengendalian suhu otomatis pada modul TEG berbasis mikr...
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Analisis Kualitas Sambungan Las Kampuh V dan Double V Menggunakan Self Shielded Fcaw pada Baja Karbon Rendah Astm A36 Uji Dpt, Tarik dan Bending
Jurnal Universal Technic (UNITECH)
Vol 4
, No 2
(2025)
This research was conducted to evaluate the weld joint quality of V-groove and double V-groove configurations on ASTM A36 low carbon steel using the Self Shielded Flux-Cored Arc Welding (FCAW-SS) method. ASTM A36 was selected as the base material due to its favorable mechanical properties, excellent weldability, and wide application in construction and manufacturing. The welding process was carried out on steel plates with a thickness of 10 mm using E71T-1C wire, under controlled parameters of 1...
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Penerapan Decission Support Sistem menggunakan Metode Multi Objective Optimization On The Basis Of Ratio Analysis pada Seleksi Penerimaan Taruna di UNIMAR AMNI Semarang
Jurnal Universal Technic (UNITECH)
Vol 4
, No 2
(2025)
The selection process for prospective cadets at a maritime college is routinely carried out every year. In the current system, the processing and calculation of prospective cadet scores uses Microsoft Excel tools, but this takes a long time and can lead to errors in the calculation of scores and the recapitulation of selection results. In addition, unintegrated data can lead to data duplication, resulting in inaccurate selection results that can be detrimental to prospective cadets. A fast, prec...
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SINTESIS MEMBRAN AKRILONITRIL BUTADIENA STIRENA TERMODIFIKASI FILLER SULFONASI GRAFENA OKSIDA TEREDUKSI DAN CERIUM OKSIDA
Iskandar, Riska Listiarini
; Dampang, Sarah
; Hakim, Muhammad Fahmi
; Perdani, Meka Saima
; Siswantito, Firgi
; Widianto, Eri
; Fauji, Najmudin
Jurnal Inovasi Teknik Kimia
Vol 10
, No 4
(2025)
The utilization of Acrylonitrile Butadiene Styrene (ABS) polymer as an alternative membrane for Direct Methanol Fuel Cell (DMFC) applications has been investigated. This study aims to evaluate the effect of sulfonation temperature on the performance of ABS membranes modified with reduced graphene oxide/cerium oxide (s-rGO/CeO₂). The membranes were synthesized via sulfonation at 65 °C, 75 °C, and 85 °C, with a filler composition of 3% v/v. The results indicate that the addition of filler signific...
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STUDI EKSPERIMEN PENGARUH JENIS DAN ARAH PENEMPATAN SERAT MATERIAL KOMPOSIT BERMATRIKS UNSATURATED POLYMER RESIN (UPR) TERHADAP NILAI IMPAK DAN SIFAT FISIK
Jurnal Inovasi Teknik Kimia
Vol 10
, No 4
(2025)
Biokomposit merupakan salah satu upaya untuk isu global lingkungan saat ini, dimana jenis material ini berasal dari bahan dasar organik dan lebih mudah terurai saat menjadi limbah. Penelitian ini berfokus pada pembuatan biokomposit dengan serabut kelapa dan daun nanas sebagai penguat dan Unsaturated Polymer Resin (UPR) sebagai matriks. Biokomposit dibuat menjadi dua spesimen dengan perbedaan fraksi volume yakni 10% serat + 90% matriks dan 15% serat + 85% matriks dengan 2 jenis arah penempatan ya...
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Web-Based Sales Promotion Information System for Subsidized Housing at Mutiara Garden Housing Complex
Fajrina, Isra
; Putra, Firmansyah
; Yusran, Yusran
; Fajrina, Isra
; Putra, Firmansyah
; Yusran, Yusran
JUISI : Jurnal Ilmiah Sistem Informasi
Vol 4
, No 1
(2025)
Promotion and provision of information on subsidized housing for low-income communities (MBR) is still carried out conventionally, such as throught brochures, banners or exhibitions. This method is considered less effective in reaching the wider community, especially the younger generation who are more familiar with digital technology. This research aims to design and create a web-based information system for sales promotion of subsidized housing at Mutiara Gerden Housing. This system is expecte...
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PENGOLAHAN LIMBAH TEKSTIL (METHYLENE BLUE) MENGGUNAKAN ADSORBEN KARBON AKTIF KULIT MANGGIS (GARCINIA MANGOSTANA) TERAKTIVASI HIDROGEN PEROXIDE
Jurnal Inovasi Teknik Kimia
Vol 10
, No 4
(2025)
Textile wastewater is a major contributor to aquatic pollution because synthetic dyes such as Methylene Blue (MB) are toxic, persistent, and resistant to biodegradation. This study investigates the adsorption performance of activated carbon derived from mangosteen peel (Garcinia mangostana) activated with hydrogen peroxide (H₂O₂) for MB removal from aqueous solution. Activated carbon was prepared by carbonization at 850 °C, followed by chemical activation with diluted 50% H₂O₂. Adsorption tests...
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SYNERGISTIC INTERFACIAL CHEMISTRY OF HUMIC ACID AND ACTIVATED FLY ASH FOR HIGH-PERFORMANCE Mn²⁺ ADSORPTION
Susparini, Ninik Triayu
; Ramadhan, Alamsyah Sultan
; Aferta, Lusi
; Benu, Marlon Jusak Renaldy
; Wijayanti, Sri
; Tantowi, Ali
Jurnal Inovasi Teknik Kimia
Vol 11
, No 1
(2025)
This study developed a hybrid adsorbent derived from activated fly ash (FA) and humic acid (HA) for effective Mn²⁺ removal from aqueous solutions. Fly ash was activated using 1 M NaOH to increase its surface hydroxyl groups (≡Si–OH and ≡Al–OH) and enhance reactivity. The activated FA was then composited with HA, which contains abundant –COOH and –OH groups, forming an inorganic–organic hybrid with improved adsorption capability. The HA–FA composite with a 1:3 mass ratio exhibited the highest Mn²...
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Unveiling the Link Between Numeracy Skills and Self-Efficacy: A Study on Physics Learning Through AKM Assessments
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 4
(2025)
This study explores the relationship between numeracy skills and self-efficacy among grade 10 students within the context of the Minimum Competency Assessment (AKM) in physics, focusing on linear and parabolic motion. Employing a quantitative descriptive design, the research involved 140 students from a public high school in Bekasi, Indonesia. Instruments included a numeracy test comprising 17 AKM-based physics questions and a self-efficacy questionnaire adapted from Bandura's framework, coverin...
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Development of E-Worksheets Discovery Learning Model Assisted by Augmented Reality for Renewable Energy Topic
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 4
(2025)
The poor motivation and interest of students in learning physics which is frequently viewed as challenging and less interesting led to the conduct of this study. As a result, creating cutting-edge educational materials that may facilitate interactive learning and foster a deeper conceptual grasp is essential. Building an Electronic Student Worksheet on the subject of renewable energy using the Discovery Learning methodology enhanced by Augmented Reality is the aim of this study. The research and...
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