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Influence of Mixing Time on the Hardness and Structure of Local Clay-Based Crucibles
Rusiyanto
; Rifky Ismail
; Athanasius Priharyoto Bayuseno
; Daffa Agya Mahardika
; Fitriyana, Deni Fajar
; Wirawan Sumbodo
; Aldias Bahatmaka
Advance Sustainable Science, Engineering and Technology
Vol 8
, No 1
(2025)
Although clay crucibles are frequently utilized in regional industries, their inadequate mechanical strength often causes durability issues. This study investigates the influence of mixing duration on the Vickers hardness and macrostructure of crucibles composed of local clay, kaolin, and molasses. The composition was made up of 47.5% clay, 47.5% kaolin, and 5% molasses as a binder, with 15% water added relative to the total weight. Durations of 15, 30, and 45 minutes were evaluated to determine...
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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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Effect of Natural Fiber Stacking Sequence on the Properties of Hybrid Composites for Drone Frame Applications
Janiviter Manalu
; Jefri Bale
; Khristhoper Aris Arianto Manalu
; Frans Augusthinus Asmuruf
; Fitriyana, Deni Fajar
; Nizar Alamsyah
; Januar Parlaungan Siregar
; Al Ichlas Imran
; Tezara Cionita
; Natalino Fonseca Da Silva Guterres
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 4
(2025)
The present study highlights the effective utilization of waste fibers in structural composites for drone frame applications, offering a sustainable pathway for developing high-performance materials while simultaneously addressing the issue of textile waste pollution. This study investigates the effect of ramie and cotton fiber waste fabric stacking sequences on the physical and mechanical properties of composites for quadcopter drone frames. Waste fabric was selected as an eco-friendly material...
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Mechanical Properties of Epoxy Composite Reinforced with Spent Coffee Ground and Coffee Husk
Etanto Heiliano Wijayanto
; Imran, Al Ichlas
; Siregar, Januar Parlaungan
; Mohd Ruzaimi Mat Rejab
; Tezara Cionita
; Wisnu Prayogo
; Deni Fajar Fitriyana
; Rozanna Dewi
; Thomas Junaedi
; Agustinus Purna Irawan
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 4
(2025)
This study aims to investigate the effect of increasing the concentration of natural filler on the mechanical properties of Spent Coffee Ground (SCG) / Coffee Husk (CH) reinforced epoxy matrix composite. The materials used in this study are epoxy resin as a matrix and waste coffee grounds and coffee husks as natural fillers with sizes of 100-mesh and concentrations of 10, 20, and 30 wt.%. The results showed that SCG 10 wt.% produced the best mechanical properties compared to the other samples ba...
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Mechanical Performance of Epoxy Composite Reinforced with Wood Dust and Crumb Rubber Waste
Imran, Al Ichlas
; Siregar, Januar Parlaungan
; Cionita, Tezara
; Fitriyana, Deni Fajar
; Anis, Samsudin
; Dewi, Rozanna
; Junaedi, Thomas
; Wijayanto, Etanto Heiliano
; Prayogo, Wisnu
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 4
(2025)
The incorporation of wood dust and crumb rubber waste as filler in polymer matrix composite still requires in-depth evaluation of mechanical properties because they have different characteristics. This study evaluates the tensile, flexural, and hardness properties of epoxy composites reinforced with various fractions of wood dust and crumb rubber (5, 10, and 15%). The results showed that the composite with 5% crumb rubber produced the highest tensile strength of 15.52 MPa (CR5), while the highes...
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Mechanical Performance of Alkali-Treated Rattan Strips with Epoxy Coating for Sustainable Composite Applications
Kalatharan, Sujentheran Nair
; Imran, Al Ichlas
; Irawan, Agustinus Purna
; Siregar, Januar Parlaungan
; Cionita, Tezara
; Fitriyana, Deni Fajar
; Anis, Samsudin
; Dewi, Rozanna
; Setyoadi, Yuris
; Wisnu Prayogo
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 3
(2025)
The use of natural materials like rattan in eco-friendly composites is gaining attention in materials engineering. However, its hydrophilic nature and interaction with other materials can affect mechanical strength. This study investigates how variations in rattan size and alkali treatment influence the tensile properties of single rattan strips through an epoxy dipping process. Rattan was prepared with varying lengths (5–15 cm), widths (3–8 mm), and a consistent thickness (0.5 mm). Alkali treat...
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1 Sitasi
Pemeriksaan Kesehatan Driver Bus AKAP untuk Mencegah Kecelakaan Kerja di PO. Mahardhika, Kabupaten Wonogiri
Hendrawati, Lulus Suci
; Triwibowo, Agung Cahyono
; Widyaputra, Gama
; Rudyarti, Edwina
; Husen, Husen
; Sahuri, Sahuri
; Purba, Yunita Sari
; Arjuni, Defi
; Destriyana, Destriyana
; Rahmawati, Yuli Dwi
; Ferdiansyah, Mohammad Fahri
; Rakan, Ghaly Nur Muhammad
Jurnal Abdimas Bhakti Indonesia
Vol 6
, No 1
(2025)
Kecelakaan lalu lintas yang melibatkan kendaraan umum seperti bus Antar Kota Antar Provinsi (AKAP) masih menjadi masalah krusial di Indonesia. Salah satu penyebab utama adalah kondisi kesehatan dan kelelahan pengemudi yang tidak terpantau secara rutin. Pengemudi yang mengalami kelelahan fisik maupun gangguan kesehatan seperti hipertensi berisiko lebih tinggi mengalami penurunan konsentrasi, waktu reaksi yang lambat, dan potensi kecelakaan kerja. Berdasarkan hal tersebut, kegiatan pengabdian masy...
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Development of HARIR (Last Day) Animated Learning Video as Da'wah Media for Grade 6 Elementary School Learning
MAGISTRA: Media Pengembangan Ilmu Pendidikan Dasar dan Keislaman
Vol 16
, No 1
(2025)
This research aims to develop instructional media in the form of an animated video focused on preaching about the Warning of the Coming of the Last Day, with the hope of providing understanding for sixth-grade elementary school students. The research method used is Design and Development (D&D) with the ADDIE model, which consists of five stages: Analysis, Design, Development, Implementation, and Evaluation. The study population consists of all sixth-grade elementary school students, with a s...
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Pelatihan Merawat Luka Mencegah Infeksi untuk Petugas Tata Kelola dan Pemuda Gereja Paroki Santo Fransiskus Asisi Tebet
Nataprawira, Sari Mariyati Dewi
; Sari, Triyana
; Yani, Jovan Falian
; Gabriella, Regina
; Reynardo, Reynardo
Karunia: Jurnal Hasil Pengabdian Masyarakat Indonesia
Vol 4
, No 1
(2025)
The management and care of wounds play a crucial role in the healing process. Improper wound management can lead to infections, slow down the healing process, and even cause post-healing disabilities. Therefore, increasing knowledge about wound care is essential, especially in initial treatment, by conducting wound care training to prevent infections.The training was provided to the administrative staff and youth of the St. Francis of Assisi Church in Tebet. It was conducted using two methods: t...
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Implikasi Implementasi Kurikulum Merdeka di SD Negeri Sidorejo Lor 3 Salatiga
Jurnal Sinektik
Vol 7
, No 2
(2024)
This study describes the implementation of the independence curriculum at SD Negeri Sidorejo Lor 3 Salatiga. The purpose of this research is to find out the implementation of the independent curriculum in elementary schools. This type of research is qualitative research. Data was collected by interviewing teachers. The results of this study indicate that the implementation of the independent curriculum pays attention to the philosophy of Ki Hajar Dewantara. The teacher's duty is to guide the gro...
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