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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 (ASSET)
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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Pengaruh Media Video Edukasi Terhadap Pengetahuan Siswa Sdn 05 Pancur Batu Tentang Cuci Tangan Pakai Sabun (Ctps)
Eliska, Eliska
; Talitha Jasmine, Savina
; Suryani Siregar, Jelita
; Selvia Ramadani
; Suci Ramadiah, Putri
Adi Widya: Jurnal Pengabdian Masyarakat
Vol 9
, No 2
(2025)
Cuci Tangan Pakai Sabun (CTPS) adalah cara hidup yang bersih dan sehat yang efektif dalam mencegah penyakit menular, khususnya pada anak usia sekolah. Studi ini menyelidiki bagaimana media video edukasi berdampak pada peningkatan pengetahuan siswa SDN 05 Pancur Batu mengenai CTPS. Metode penelitian menggunakan desain kuantitatif dengan pendekatan one-group pretest-posttest. Sampel penelitian berjumlah 31 responden yang diberikan pretest, intervensi berupa video edukasi CTPS, dan posttest. Hasil...
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Pengaruh model pembelajaran project-based learning berbantuan prezi terhadap kemampuan penyelesaian masalah siswa kelas VIII
AKSIOMA : Jurnal Matematika dan Pendidikan Matematika
Vol 16
, No 2
(2025)
This study aims to examine the effect of the Project-Based Learning (PjBL) model assisted by Prezi media on students’ mathematical problem-solving skills. The research employed a quantitative method with a quasi-experimental approach using a pretest-posttest control group design. The population consisted of all eighth-grade students at SMP Muhammadiyah 1 Medan, totaling 320 students. The sample consisted of 37 students, comprising the experimental class VIII-T1 (18 students) and the control clas...
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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 (ASSET)
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 (ASSET)
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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EFEKTIVITAS REALISTIC MATHEMATICS EDUCATION BERBASIS HYPOTHETICAL LEARNING TRAJECTORIES TERHADAP KEMAMPUAN BERPIKIR REFLEKTIF SISWA
JIPMat (Jurnal Ilmiah Pendidikan Matematika)
Vol 10
, No 1
(2025)
Berpikir reflektif memiliki peran penting bagi siswa pada pembelajaran matematika yang melibatkan pemecahan masalah. Namun, siswa seringkali memiliki kemampuan berpikir reflektif yang cenderung rendah. Penelitian ini bertujuan untuk menguji perbedaan kemampuan berpikir reflektif siswa yang mendapat pembelajaran Realistic Mathematics Education (RME) berbasis Hypothetical Learning Trajectories (HLT) dan siswa yang menerima pembelajaran konvensional. Penelitian ini bersifat kuantitatif quasi-eksper...
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Computational Assessment of Orthopedic Implant Durability Using Finite Element Analysis
Haryanto, Ismoyo
; Bagastomo, Riondityo Soni
; Ismail, Rifky
; Siregar, Januar Parlaungan
; Cionita, Tezara
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 3
(2025)
Finite Element Analysis (FEA) provides a rapid and cost-effective method to evaluate orthopedic implants. This research investigates the mechanical performance and long-term durability of a seven-hole SS 316L Basic Fragment Set (BFS) reconstruction plate designed for pelvic fractures. Adhering to ASTM standards, material properties were defined via tensile testing (ASTM E8), while static and fatigue analyses were performed using a displacement control method in a four-point bending test setup in...
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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 (ASSET)
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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Implementasi Algoritma Logistic Regression dalam Memprediksi Penyakit Jantung
Aritonang, Madhani Gokma Hot
; Parangin angin, Reynaldi Valentino
; Tambunan, Raymond Hosea
; Simatupang, Ronauli
; Siregar, Saut Dohot
Dinamik
Vol 30
, No 2
(2025)
Penyakit jantung merupakan salah satu penyakit dengan angka kematian tertinggi di negara maju bahkan dunia. Penyakit jantung dapat mengancam jiwa jika tidak ditangani dengan serius. Jumlah penderita penyakit jantung meningkat setiap tahunnya. Penyakit jantung dapat disebabkan oleh beberapa faktor, yang utama adalah konsumsi alkohol berlebihan, kebiasaan merokok, dan faktor keturunan. Penelitian ini bertujuan untuk memprediksi dan mencegah penyakit jantung sejak dini menggunakan algoritma pembela...
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POTRET KEBAHAGIAAN-SELIGMAN MELALUI ENGAGEMENT MASYARAKAT KALIWUNGU PADA TRADISI WEH-WEH’AN
Jurnal Talenta Psikologi
Vol 14
, No 1
(2025)
Penelitian ini mengkaji kebahagiaan masyarakat Kaliwungu yang muncul dari keterlibatan (engagement) mereka dalam tradisi Weh-wehan, perspektif psikologi positif Martin Seligman memberikan wawasan dalam eksplorasi ini. Delapan informan dari masyarakat Kaliwungu yang aktif dalam tradisi Weh-wehan berpartisipasi dalam penelitian kualitatif fenomenologis melalui metode wawancara mendalam dan observasi. Melalui reduksi data, kategorisasi, interpretasi, dan penarikan kesimpulan, kita melakukan teknik...
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