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Menampilkan 21–30 dari 2050 artikel
CFD Simulation of Flame Characteristics Resulting from Volatile Matter Combustion of Various Biomass Pellets
Fitrah, Ramavi Akbar Akhsanul
; Kusumaningtyas, Ratna Dewi
; Widjanarko, Dwi
; Widyastuti, Catur Rini
; Hidayat, Muslikhin
; Aziz, Muhammad
While biomass is a promising carbon-neutral alternative to coal, the specific volatile matter (VM) flame characteristics of diverse biomass pellets, particularly water hyacinth, remain under-researched. This study uses a numerical CFD approach (Ansys Fluent) to investigate how varying VM fractions influence flame structure in a 2D planar slice of the furnace block (25 cm width). Simulations employed the SST k–ω turbulence and Eddy dissipation model to capture mixing-limited chemical reactions. B...
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Evaluating Behavior-Driven Metrics in Gamified Hybrid Environments: A Structural Analysis Approach
Henka Bayu Seta
; Zatin Niqotaini
; Sarika Afrizal
; Theresiawati
; Artika Arista
; Rapolo Joshua Napitupulu
; Muhammad Ibrahim Al Farisi
Despite the widespread adoption of gamification in higher education, a significant research gap remains regarding the structural pathways through which specific game elements influence psychological drivers and academic success in hybrid settings. This study addresses this by evaluating the impact of badges, points, progress bars, and leaderboards on student motivation and outcomes using a quantitative approach with a sample of 437 university students in Indonesia. Data were analyzed using Parti...
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The Impact of Screen Time Duration and Eye Rest Habits on Students of Muhammadiyah 4 High School, Depok City in 2024
Jurnal Kesehatan
Vol 19
, No 1
(2026)
Pendahuluan: Kelelahan mata umum terjadi di kalangan siswa karena penggunaan perangkat elektronik seperti smartphone yang berkepanjangan. Penelitian ini bertujuan untuk mengidentifikasi faktor-faktor yang berkontribusi terhadap keluhan kelelahan mata di SMA Muhammadiyah 4 Kota Depok, dengan fokus pada hubungan antara faktor individu, perangkat digital, dan lingkungan. Metode: Dalam penelitian ini, variabel dependen adalah kelelahan mata dan variabel independen adalah postur tubuh saat menggunaka...
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The Relationship Between Workload, Work Duration, and Water Consumption with Heat Strain Among Workers in the Purwogondo Tofu Industry, Kartasura
Jurnal Kesehatan
Vol 19
, No 1
(2026)
Pendahuluan: Penerapan standar Keselamatan dan Kesehatan Kerja (K3) seringkali diabaikan di sektor informal, khususnya di pabrik tahu, yang menyebabkan peningkatan risiko kesehatan bagi pekerja. Mengingat sifat produksi tahu tradisional yang melibatkan paparan panas tinggi dan potensi jam kerja yang panjang, analisis faktor-faktor yang memengaruhi paparan panas sangat dibutuhkan untuk melindungi kesehatan pekerja. Studi ini bertujuan untuk menganalisis hubungan antara beban kerja, durasi kerja,...
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Poetry writing as a counseling intervention to enhance self-talk ability among junior high school students
This study aims to test the effectiveness of writing poetry as a counseling intervention in improving self-talk skills in junior high school students. The study used a quantitative approach with a quasi-experimental non-equivalent control group design. The research subjects consisted of 30 students divided into an experimental group and a control group. The instrument used was a self-talk ability questionnaire that had been tested for validity and reliability. Data were collected through pre-tes...
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Enhancing self-regulated learning through artificial intelligence: experimental evidence from high school students
Self-regulated learning is a critical competency for supporting students’ academic success, yet its development remains limited by outdated, inflexible teaching approaches. Meanwhile, the potential of artificial intelligence in education continues to grow, but empirical evidence regarding its effectiveness in enhancing self-regulated learning among secondary school students in Indonesia remains limited. This study aims to test the effectiveness of using an artificial intelligence application in...
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The Correlation Between Physical Activity and Quality of Life Among Physiotherapy Students at Muhammadiyah University of Malang, Class of 2022
Rafli Arrahim, Muhammad
; Rosidah, Nikmatur
; Baruna, Arys Hasta
; Muthohiry, Muhammad Raiz
; Prastowo, Bayu
; Rizal, Fahmi
; Prasetyo, Dwi Agung
FISIO MU: Physiotherapy Evidences
Vol 7
, No 2
(2026)
Introduction: Physical activity is any activity that requires physical effort and can increase heart rate and breathing. Physical activity plays a role in maintaining physical fitness, strengthening the heart and lungs, reducing the risk of chronic diseases, and helping to improve mood, reduce stress, and enhance quality of life. This study aims to determine the relationship between physical activity and quality of life among students in Malang. Methods: This study employed a correlational desig...
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CFD-Based Thermohydrodynamic Analysis of Vegetable Oil Lubricants in Journal Bearings
This study investigates the thermohydrodynamic performance of journal bearings lubricated with palm trimethylolpropane (TMP) ester as a biolubricant, compared to conventional engine oil, using computational fluid dynamics (CFD) in ANSYS Fluent. The objective is to evaluate the influence of lubricant type on pressure distribution, load carrying capacity, friction force, and cavitation behavior. The results show that palm TMP ester generates higher hydrodynamic pressure while maintaining a similar...
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Collaborative leadership between principals and school counselors as a predictor of students' PERMA well-being in wetland-based senior high schools
Student well-being is increasingly recognized as a core indicator of educational quality, yet its structural and leadership determinants remain underexplored in wetland-based school systems. This study critically examines whether collaborative leadership between principals and school counselors predicts students’ PERMA well-being in public senior high schools in Provinsi Kalimantan Selatan, Indonesia. Using a multisite quantitative survey, data were collected online from 12 randomly selec...
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Performance Evaluation of a Community-Scale Fiberglass Anaerobic Digester for Biogas and Nutrient Recovery
The management of organic waste using an anaerobic reactor offers the potential for renewable energy production and nutrient recovery. This study evaluates the performance of a 3,000 L fiberglass anaerobic reactor designed to treat a mixture of kitchen waste, cow manure, and water in a 1:1:1 ratio. The process was conducted under mesophilic conditions (30–38 °C) over a 40-day batch cycle. The reactor produced a total of 63.75 m³ of biogas with an average methane content of 59.3%, equivalent to 0...
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