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Menampilkan 421–430 dari 4539 artikel
Effect of Biomass Feedstock Granulometry on Thermophysical Characteristics of Charcoal Briquettes via Screw Extrusion
Samsudin Anis
; Jefri Bale
; Septian Eko Cahyanto
; Ninda Kurniadi
; Fitriyana, Deni Fajar
; M. Thooriq Anwar
; Januar Parlaungan Siregar
; Natalino Fonseca Da Silva Guterres
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 4
(2025)
The present study investigates the impact of particle size variation (10, 18, 20, and 35 mesh) on the physical and thermal properties of charcoal briquettes from coconut shells manufactured with a screw-based extruder machine. The briquette manufacturing process involves crushing, mixing, molding, and drying. Assessments were conducted to ascertain friability, compressive strength, density, calorific value, volatile matter, ash content, fixed carbon, and water content. Comparable assessments wer...
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Development of an IoT-based Soil Nutrient Monitoring and GIS Mapping System for Precision Agriculture
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 4
(2025)
Agriculture is a field that contributes to Indonesia's economic development. Unpredictable weather, temperature fluctuations, and the difficulty in assessing soil quality hinder farmers in enhancing crop productivity. The IoT in signifies a beneficial progression that will assist farmers in their endeavors. Precision agriculture is an innovative approach that employs information technology for sustainable agricultural management. This research aims to assess soil nutrients and provide mapping d...
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Entrepreneurship Training as well as Environmental Conservation for Junior High School Students through Ecoprint
Indonesian Journal of Empowerment and Community Service
Vol 6
, No 2
(2025)
One of the P5 projects on the theme of entrepreneurship is Ecoprint, which is a natural batik art using plant parts as the basic material, and if done seriously, this batik art can generate income for its maker. The purpose of this service is to provide understanding through ecoprint training to students of SMP Muhammadiyah 1 Kartasura because of its relevance to the P5 subject on the theme of entrepreneurship. The method of this service is through lectures and direct practice of making ecoprint...
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Rancang Bangun Sistem Kemudi Rack And Pinion dan Suspensi Independent Double Wishbone Mobil Listrik Formula E Politeknik Baja Tegal
Majalah Ilmiah Momentum
Vol 21
, No 2
(2025)
Sistem Kemudi dan Suspensi merupakan komponen terpenting dalam sebuah kendaraan untuk menselaraskan, menyeimbangkan dan memaksimalkan kinerja mobil tersebut agar dapat berjalan dengan baik, aman dan nyaman. Meskupin sistem kemudi rack and pinion dan suspensi independent double wishbone sudah ada sejak lama, namun masih masih banyak yang perlu diatasi dan diinovasikan, seperti tingkat kenyamanan, responsifitas, keamanan, keterbatasan kontrol pengguna dan kesulitan untuk mengatasi rintangan yang l...
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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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ANALISA PENGUJIAN KADAR NITRAT, NITRIT DAN KLORIDA PADA AIR MINERAL DENGAN METODE SPEKTROFOTOMETRI UV – VIS DAN TITRIMETRI
Jurnal Inovasi Teknik Kimia
Vol 10
, No 4
(2025)
Udara merupakan kebutuhan esensial bagi kehidupan manusia, Kualitas air minum menjadi perhatian utama dalam upaya menjaga kesehatan masyarakat. Keberadaan senyawa nitrat (NO₃⁻), nitrit (NO₂⁻), dan klorida (Cl⁻) dalam air mineral perlu dikaji mengingat potensi toksisitasnya apabila melebihi ambang batas yang ditetapkan oleh standar nasional. Penelitian ini bertujuan untuk menentukan kadar nitrat, nitrit, dan klorida dalam beberapa sampel air mineral menggunakan metode spektrofotometri UV–Vis dan...
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SINTESIS DAN KARAKTERISASI FOTOKATALIS NANO TIO2-MEMBRAN POLIURETAN BERBASIS MINYAK ALPUKAT, HDI, DAN POLYETHYLENE GLYCOL (PEG) PADA FOTODEGRADASI METIL JINGGA
Jurnal Inovasi Teknik Kimia
Vol 10
, No 4
(2025)
Synthetic dyes such as methyl orange are classified as persistent pollutants that are difficult to degrade biologically, thus requiring effective and sustainable treatment technologies. This study develops a photocatalytic membrane based on polyurethane (PU) synthesized from avocado seed oil, hexamethylene diisocyanate (HDI), and polyethylene glycol (PEG) for immobilizing TiO₂ nanoparticles. PEG was used as a dispersing additive to prevent TiO₂ agglomeration and enhance the membrane's hydrophili...
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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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