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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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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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Comparison of Gauss Quadrature and Newton–Cotes methods of order 10 in definite integral calculations
This study aims to evaluate and compare the accuracy of the Gauss Quadrature Method and the 10th Order Newton–Cotes Method based on numerical error in computing definite integrals, especially for complex functions that are difficult to solve analytically. The Gauss Quadrature Method studied includes the use of 2-point, 3-point, 4-point, 5-point, and 6-point rules, where the term points refers to the number of nodes used in the integration process. In contrast, the 10th-order Newton–Cotes Method...
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Effect of Different Layers on the Performance of Laminate Epoxy Composite Reinforced with Textile Waste
Thomas Junaedi
; Siregar, Januar Parlaungan
; Zalani, Mohamed Reza
; Imran, Al Ichlas
; Tezara Cionita
; Endah Murtiana Sari
; Deni Fajar Fitriyana
; Etanto Heiliano Wijayanto
Post-consumer textile waste poses significant environmental problems, but its potential for commercial recycling remains under-researched. Therefore, this study utilizes calico textile (CT) waste as reinforcement in polymer composites. The effect of layering number of CT in epoxy composite will be investigated. CT was varied with three layers, namely 1, 3, and 5 embedded in epoxy resin with the hand lay-up method in open molding. The mechanical testing of pure epoxy as a control point for tensil...
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Peran Mediasi Penerapan Sistem E-Filing terhadap Keterkaitan Sikap terhadap E-Filing dan Kepatuhan Wajib Pajak
KOMPAK : Jurnal Ilmiah Komputerisasi Akuntansi
Vol 32
, No 1
(2026)
This study aims to examine the extent to which taxpayers’ attitudes toward e-filing influence tax compliance, with the implementation of e-filing positioned as a mediating variable among employees of PT Selalu Cinta Indonesia (SCI) registered at the Primary Tax Office (KPP Pratama) of Salatiga City. The population comprised 18,244 employees, from which a sample of 100 respondents was selected using purposive sampling. Data were processed and analyzed using simple linear regression and path analy...
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PENGARUH EDUKASI MP-ASI BERBASIS VIDEO TERHADAP PENGETAHUAN IBU BAYI USIA 6–24 BULAN
Jurnal Ilmiah Kesehatan Ar-Rum
Vol 10
, No 2
(2026)
Pemberian Makanan Pendamping ASI (MP-ASI) yang tidak tepat masih menjadi salah satu faktor penyebab terjadinya gizi kurang dan stunting pada bayi dan balita. Rendahnya pengetahuan ibu mengenai waktu, jenis, tekstur, dan kandungan gizi MP-ASI berkontribusi terhadap praktik pemberian MP-ASI yang tidak sesuai dengan rekomendasi. Salah satu upaya untuk meningkatkan pengetahuan ibu adalah melalui edukasi kesehatan menggunakan media video yang menggabungkan unsur audio dan visual sehingga lebih mudah...
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Pengendalian Kualitas Produk Paperbag Menggunakan Metode Six Sigma
Jurnal Ilmiah Sains dan Teknologi
Vol 8
, No 01
(2026)
PT Solo Murni merupakan perusahaan manufaktur yang bergerak di bidang percetakan yang selalu mengedepankan kualitas produknya, hal ini ditempuh dengan cara melakukan pengendalian kualitas proses produksi di PT Solo Muni. Pengendalian kualitas dilakukan dengan cara mengidentifikasi jenis cacat pada produk. Penelitian ini bertujuan untuk menganalisis dan memperbaiki kualitas produk paperbag menggunakan metode Six Sigma dengan pendekatan DMAIC ( Define, Measure, Analyze, Improve, Control ). Masalah...
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Game on Mission Anti-Bullying: Edukasi Pencegahan Bullying Melalui Permainan Psikoedukasi
Rahayu, Desi Ariyana
; Nurhalimah, Nurhalimah
; Mubin, MF
; Hidayati, Eni
; Setyaningtyas, Rahma Julia
; Sulistyaningrum, Hersanti
Jurnal Inovasi dan Pengabdian Masyarakat Indonesia
Vol 5
, No 1
(2026)
Latar belakang: Bullying menjadi masalah utama di seluruh dunia dan Indonesia tanpa terkecuali. Bullying didefinisikan sebagai perilaku agresif sistematis terhadap korban yang tidak dapat membela diri. Korban mengalami masalah psikologis, sedangkan pelaku memiliki risiko lebih tinggi mengalami masalah perilaku kedepan. Kejadian umum bullying seringkali ditemukan di sekolah dan diawali di jenjang sekolah dasar sehingga perlu dilakukan intervensi untuk mencegah dan menangani kasus bullying sejak d...
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Microstructural and Carbon Phase Analysis of Water Hyacinth Derived Biochar under Particle Size Variation
Lontar Physics Today
Vol 5
, No 1
(2026)
Water hyacinth is an abundant lignocellulosic biomass with strong potential as a sustainable carbon source. This study aims to investigate the effect of particle size variation on the carbon phase and microstructural development of biomass-derived carbon from water hyacinth. The leaves of water hyacinth were used as a raw material, thoroughly washed, cut into small pieces, and sun-dried for 11 days until completely dry. The dried leaves were then ground into powder and sieved into three particle...
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Pengaruh DER, ROE, dan EPS Terhadap Harga Saham Pada Perusahaan Sub Sektor Pulp dan Kertas Yang Terdaftar di BEI Periode 2018 – 2023
Wawasan : Jurnal Ilmu Manajemen, Ekonomi dan Kewirausahan
Vol 4
, No 1
(2026)
This study aims to analyze the effect of Debt to Equity Ratio (DER), Return on Equity (ROE), and Earning Per Share (EPS) on stock prices of pulp and paper sub-sector companies listed on the Indonesia Stock Exchange (IDX) during the 2018–2023 period. This research employs a quantitative associative approach using secondary data obtained from annual financial statements and stock closing prices. The population consists of all pulp and paper sub-sector companies listed on the IDX, with six companie...
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