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Studiefonds van Het Mangkoenagara VII :1924-1930
Keraton: Journal of History Education and Culture
Vol 7
, No 2
(2025)
This study examines the implementation of Studiefonds Van Het Mangkoenagoro VII (1924-1930) as a concrete manifestation of the Ethical Political Trilogy, especially in the field of education in Praja Mangkunegaran. This research aims to: (1) analyze the distribution mechanism and implementation of Studiefonds, (2) evaluate the role of Mangkunegara VII in the management of the education fund, and (3) identify the impact on the Sentana and Abdi Dalem. The method used the historical method with the...
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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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KESALAHAN SISWA DALAM MENYELESAIKAN SOAL TRIGONOMETRI DITINJAU DARI LITERASI NUMERASI PADA LEVEL KOGNITIF KNOWING, APPLYING, DAN REASONING
JIPMat (Jurnal Ilmiah Pendidikan Matematika)
Vol 10
, No 1
(2025)
Literasi numerasi merupakan kemampuan berpikir dengan konse dan prosedur serta fakta dan alat matematika untuk menyelesaikan masalah yang berkaitan dengan diri, lingkungan sekitar dan masyarakat. Penelitian ini bertujuan untuk mendeskripsikan kesalahan siswa SMA dalam mengerjakan soal trigonometri ditinjau dari literasi numerasi pada level kognitif knowing, applying, dan reasoning. Metode yang digunakan dalam penelitian ini adalah deskriptif kualitatif. Subjek penelitian merupakan siswa SMA kela...
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Numerical Investigation of Consolidation Settlement for Runway Construction on Soft Soil: A Case Study in Sumbawa, Indonesia
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 3
(2025)
Runway construction on soft soil presents significant engineering challenges due to excessive settlement, which can affect structural stability and long-term performance of transportation infrastructure. This study investigates the settlement of a runway in Sumbawa, Indonesia using the Finite Element Method (FEM) in Plaxis 2D. The Hardening Soil Model was applied to realistically capture nonlinear soil behavior. Input parameters were derived from a series of N-SPT data and laboratory test result...
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2 Sitasi
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
Pelatihan Pembuatan Kain Nusantara Ecoprint dengan Teknik Iron Blanket
Jurnal Pengabdian Kepada Masyarakat
Vol 2
, No 2
(2025)
Indonesian Nusantara Fabric is a cultural heritage that has high aesthetic and philosophical value, reflecting the local wealth of various regions. Among the variety of traditional fabrics such as batik, songket, lurik, and ulos, ecoprint fabrics are present as innovations that combine traditional values with sustainability principles. Ecoprints are made using natural materials that are environmentally friendly, making them an alternative to textiles that support nature conservation. One of the...
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PENDAMPINGAN PENGELOLAAN USAHA UMKM “OMAH CHIRENG SALATIGA”
Kusuma, Risalah
; Yuliyanti, Yuke
; Suci, Indah
; Dwiyana, Nita
; Kiki, Alya
; Fitriyani, Eka
; Rumambo, Elmayana
; Haongap, Ully
; Puspita, Maria Entina
; Puspita, Maria Entina
Perwira Journal of Community Development
Vol 5
, No 2
(2025)
Kegiatan pengabdian ini bertujuan untuk memberikan pendampingan pengelolaan usaha pada salah satu usaha kecil industri rumahan singkong dan tepung tapioka “Omah Chireng Salatiga” yang berlokasi di Kauman Sidorejo Salatiga. Pemberdayaan usaha meliputi pemberdayaan manajemen produksi, pemasaran serta pengelolaan keuangan usaha dengan memberikan pemahaman praktik produksi mulai dari proses produksi, labeling kemasan hingga pengenalan produk, promosi dan saluran distribusi, pencatatan sederhana dala...
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Variasi Konsentrasi Emulgator Span-Tween 80 pada Body Scrub Ampas Kelapa (Cocos nucifera L.) dan Ekstrak Biji Alpukat (Persea americana mill)
Kunir: Jurnal Farmasi Indonesia
Vol 3
, No 1
(2025)
Body scrub merupakan sediaan kosmetik untuk kecantikan yang bermanfaat untuk melembutkan dan mengangkat sel kulit mati. Ampas kelapa mengandung serat kasar yang digunakan sebagai scrub agent dan biji alpukat mengandung vitamin E yang dapat digunakan untuk perawatan kulit. Salah satu bahan yang digunakan pada sediaan body scrub didalamnya terdapat bahan span-tween 80 yang berfungsi sebagai emulgator. Penelitian ini dibuat untuk mengetahui sebesar apa pengaruh variasi konsentrasi emulgat...
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ANALYSIS OF THE PERFORMANCE OF SEA TRANSPORTATION SERVICES ON PASSENGERS AND VEHICLES ON THE QUALITY OF SERVICE AT PT. DHARMA OF THE MAIN OCEAN: ANALYSIS OF THE PERFORMANCE OF SEA TRANSPORTATION SERVICES ON PASSENGERS AND VEHICLES ON THE QUALITY OF SERVICE AT PT. DHARMA OF THE MAIN OCEAN
International Journal of Management, Business and Social Sciences
Vol 4
, No 1
(2025)
The purpose of this study is to analyze and prove the performance of sea transportation services in passenger, the performance of sea transportation services in vehicles, and the quality of service in PT. Dharma Lautan Utama. The sample determination used a quantitative research method with a population of 2,614 people, so that the number of passengers obtained was 245 people from passengers at PT. Dharma Lautan Utama. Data collection techniques are carried out by observation, questionnaire, and...
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