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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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Peningkatan Keterampilan Menulis Teks Eksposisi Dengan Media Pembelajaran Berbasis Kearifan Lokal Suku Batak Karo Pada Kelas X SMA Negeri 1 STM Hilir
Klitika: Jurnal Ilmiah Pendidikan Bahasa dan Sastra Indonesia
Vol 7
, No 1
(2025)
Tujuan dari penelitian ini adalah untuk meningkatkan keterampilan menulis teks eksposisi siswa kelas X di SMA Negeri 1 STM hilir melalui penerapan media pembelajaran berbasis kearifan lokal Suku Batak Karo. Penelitian ini dilatarbelakangi oleh rendahnya keterampilan menulis siswa, yang ditunjukkan oleh hasil ulangan harian yang masih berada di bawah Kriteria Ketuntasan Minimal (KKM). Metode yang digunakan adalah Penelitian Tindakan Kelas (PTK) yang dilakukan dalam dua siklus. Pada setiap siklus,...
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Peningkatan Keterampilan dan Produksi Pakan Berbasis Silase bagi Peternak Sapi di Kecamatan Musuk
Gojandra, Farda Pega Libra
; Priyanto, Kaleb
; Cahyanto, Septian Eko
; Saputra, Dimas Chandra
; Wibowo, Andika Agus Tri
; Rahmawati, Adinuringtyas Herfi
; Sarai Enita
Jurnal Suara Pengabdian 45
Vol 4
, No 3
(2025)
Program pengabdian kepada masyarakat ini bertujuan untuk meningkatkan keterampilan dan kapasitas peternak sapi di Kecamatan Musuk, Boyolali, melalui penerapan teknologi pencacah hijauan dan teknik fermentasi silase. Program dilaksanakan dengan pendekatan partisipatif yang melibatkan 15 peternak anggota Slamet Jaya Farm selama delapan bulan. Kegiatan meliputi perancangan dan pembuatan mesin pencacah sederhana, pelatihan teknis, demonstrasi praktik pembuatan silase, serta pendampingan berkelanjuta...
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Emotional Experiences of Mothers After Miscarriage
Jurnal Kesehatan
Vol 18
, No 2
(2025)
Pendahuluan: Keguguran merupakan pengalaman yang menyakitkan dan dapat menimbulkan dampak emosional yang mendalam bagi ibu. Berdasarkan data Profil Kesehatan Provinsi Jawa Tengah tahun 2022, tercatat sekitar 98 kasus keguguran di wilayah tersebut, dengan 210 kasus terjadi di Kota Tegal. Dari jumlah tersebut, 8 kasus tercatat di Puskesmas Tegal Barat selama periode Januari hingga Oktober 2022. Penelitian ini bertujuan untuk menggambarkan pengalaman emosional ibu pasca keguguran. Metode: Metode pe...
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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 MODEL PROBLEM BASED LEARNING BERBANTUAN MEDIA INTERAKTIF PADA CAPAIAN ASESMEN KOMPETENSI MINIMUM NUMERASI SISWA
JIPMat (Jurnal Ilmiah Pendidikan Matematika)
Vol 10
, No 1
(2025)
Kompetensi numerasi siswa di Indonesia masih rendah, sebagaimana ditunjukkan oleh survei OECD 2021 yang mencatat 71% siswa belum mencapai standar minimum matematika. Studi ini bertujuan untuk mengeksplorasi efektivitas Model Problem Based Learning (PBL) dengan bantuan media interaktif pada capaian asesmen kompetensi minimum numerasi siswa di SD Negeri Purwokerto 01. Metode yang diterapkan adalah metode kuantitatif dengan desain pre-eksperimental One Group Pretest-Posttest Design. Subjek peneliti...
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Utilization of Real Media with Individual Learning Programs in the Aspects of Social Skills for Early Childhood Children with ASD
Paudia
Vol 14
, No 3
(2025)
Abstract
Social skills are crucial for early childhood development, especially for children with ASD. Success in improving social skills in children with special needs depends heavily on the learning system implemented. Based on observations, Fun & Play Inclusive Kindergarten Semarang implements an individual learning program utilizing realia media to develop the social skills of children with special needs. This study aims to determine how the use of realia media in an individual learning p...
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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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Multi-Horizon Short-Term Residential Load Forecasting Using Decomposition-Based Linear Neural Network
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 3
(2025)
Short-Term Load Forecasting is crucial for grid stability and real-time energy management, particularly in residential settings where consumption is highly volatile and influenced by behavioral and external factors. Traditional models struggle to capture complex, non-linear patterns. This study proposes a forecasting framework based on the DLinear model, which decomposes time series data into trend and seasonal components using a simple linear neural network architecture. Designed for multi-hori...
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