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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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Assensing the Impact of Advanced Driver Assistance Systems (ADAS) on Road Safety an Empirical Study Using Factor Analysis
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 4
(2025)
Road traffic accidents remain a critical global concern, especially in low- and middle-income countries. Advanced Driver Assistance Systems (ADAS) are introduced as proactive safety technologies in the industry 4.0 era. This study aims to assess the impact of ADAS on road safety through an empirical approach. A quantitative survey involving 260 licensed drivers was conducted, followed by qualitative interviews to provide contextual insights. The dataset was confirmed reliable (KMO = 0.82; Cronba...
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KONTRIBUSI AIR LIMBAH PENGOLAHAN SAGU TERHADAP KUALITAS AIR SUNGAI
Jurnal Inovasi Teknik Kimia
Vol 10
, No 4
(2025)
Ekstraksi pati sagu membutuhkan air dalam jumlah yang banyak sehingga dalam proses pengolahannya dihasilkan air limbah sagu dan ampas sagu yang sangat banyak. Studi ini dilakukan untuk mengetahui kontribusi bahan pencemar dari air limbah sagu yang masuk ke sungai sehingga mempengaruhi kualitas air sungai. Air limbah pengolahan sagu yang digunakan adalah air buangan pertama yang diambil langsung dari saluran pembuangan (T1), air buangan terakhir yang diambil dekat dengan pembuangan ke...
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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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ANALISIS KESALAHAN NUMERASI SISWA SMA DALAM MENYELESAIKAN SOAL MATEMATIKA BERBASIS AKM BERDASAKAN METODE NEWMAN
JIPMat (Jurnal Ilmiah Pendidikan Matematika)
Vol 10
, No 2
(2025)
Tujuan penelitian ini adalah untuk memeriksa kesalahan numerasi siswa SMA dalam soal matematika berbasis Asesmen Kompetensi Minimum (AKM) dengan menggunakan metode Newman. Metode ini mengidentifikasi kesalahan siswa dalam lima langkah: membaca, memahami, transformasi, keterampilan proses, dan penulisan jawaban. Siswa di kelas XII SMA Negeri 1 Kajen, yang dipilih berdasarkan hasil tes numerasi AKM, adalah subjek penelitian. Hasil penelitian menunjukkan bahwa kesalahan terbesar terjadi pada tahap...
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Virtual Reality Effect on Student Learning Outcomes in Nuclear Physics and Radioactivity Topics
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 4
(2025)
Learning Nuclear Physics and Radioactivity is often perceived as difficult by student because the concepts are abstract, thus requiring learning media that can visualize these concepts more concretely. This study aims to analyze the effect of using Virtual Reality media on student’s learning outcomes in the topic of Nuclear Physics and Radioactivity. The research employed a Quasi Experimental method with a Nonequivalent Control Group Design. The subject were 33 12th grade students of Al Adzkar H...
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Development of A Multidimensional Assessment Instrument on the Topic of Torque
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 4
(2025)
This research focuses on the development of a multidimensional assessment instrument aimed at evaluating high school students’ learning outcomes in the topic of torque within physics education. The instrument integrates cognitive, affective, and psychomotor domains through a combination of multiple-choice questions for conceptual understanding and Likert-scale questionnaires for assessing students’ interest and communication skills. The development process followed a systematic model consisting...
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ANALISIS YURIDIS PERJANJIAN JUAL BELI PERUMAHAN DENGAN METODE DOWN PAYMENT
DINAMIKA HUKUM
Vol 26
, No 2
(2025)
Cases of non-performance of contract. on the part of the aggrieved party bring the case to the criminal realm. The charge reported is the fraud article, even though the criminal offense has not been fulfilled. So that it has the potential to cause wrong criminalization, the main problem is the inaccurate use of the fraud article against defaults which are basically civil. The research method uses normative juridical with decision analysis and criminal and civil law studies related to non-perform...
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Analisis Strategi Promosi Penjualan pada Marketplace Shopee BMA Baju Murah Anak
EBISNIS : JURNAL ILMIAH EKONOMI DAN BISNIS
Vol 18
, No 2
(2025)
Penelitian ini bertujuan untuk menganalisis strategi promosi penjualan yang diterapkan oleh BMA (Baju Murah Anak) pada marketplace Shopee. Meskipun telah melakukan berbagai upaya promosi, penjualan BMA cenderung fluktuatif dan belum mencapai target yang diharapkan. Penelitian ini menggunakan pendekatan kualitatif deskriptif dengan teknik pengumpulan data melalui observasi, wawancara, dan dokumentasi. Penelitian terfokus pada empat strategi promosi utama yaitu pemberian, paket harga, pengembalian...
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Product Design Training with Solidworks in the Effort of Student Independence at SMK 5 Surakarta
Indonesian Journal of Empowerment and Community Service
Vol 6
, No 2
(2025)
Surakarta 5 Vocational High School was an educational institution committed to improving students' digital skills and adapting to technological developments. In response to the needs and problems faced, this community service activity aims to organize product design training using SolidWorks software for students. This activity was expected to equip students with digital skills that were relevant to the industrial world, while fostering an entrepreneurial spirit. The training method includes del...
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