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Loading-Dependent Physicochemical Characteristics of LiMn2O4 Composites with Plasma-Modified and Ammonia-Functionalized Rice Husk Carbon
Harianingsih, Harianingsih
; Deni Fajar Fitriyana
; Januar Parlaungan Siregar
; Agung Budiwirawan
; Ari Dwi Nur Indriawan
; Suryo Wiroyudho Wibowo
; Rizky Ilham Fadzillah
; Nabila Khoirunisa
This study investigates LiMn2O4 composites incorporated with nitrogen-functionalized rice husk-derived carbon as a sustainable secondary phase for cathode material development. Rice husk carbon was prepared through carbonization, acid-assisted activation, plasma treatment, and ammonia functionalization, then mechanically blended with LiMn2O4 at 2, 3, and 4 wt.% to obtain LMO-NC2, LMO-NC3, and LMO-NC4, respectively. FTIR analysis showed absorption bands at approximately 3390, 1625, 1400, 1008, 83...
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Technical and Operational Evaluation of SRT-Based IP Contribution for Live Television Broadcasting
Secure Reliable Transport (SRT) is increasingly used for IP-based live-broadcast contribution because it enables low-latency delivery, packet recovery, and encrypted transport over public networks. However, its practical value depends on measurable performance under real operating conditions and disciplined operational control. This study evaluates the implementation of SRT in live football league and volleyball broadcasts using bounded case evidence from operational records, questionnaires, and...
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OPTIMALISASI PRODUKSI PODCAST DAN BERITA MELALUI PEMANFAATAN TEKNOLOGI DIGITAL DI MEDIA ONLINE INDOPOSCO
Alyanabilla, Deana
; Universitas Muhammadiyah Tangerang
; Sari, Dian Nurvita
; Universitas Muhammadiyah Tangerang
; Hamidi, Hamidi
; Universitas Muhammadiyah Tangerang
; Basit, Abdul
; Universitas Muhammadiyah Tangerang
Aguna: Jurnal Ilmu Komunikasi
Vol 7
, No 2
(2026)
Penelitian ini bertujuan untuk menganalisis optimalisasi produksi podcast dan berita dengan memanfaatkan teknologi digital pada media online Indoposco, berdasarkan teori konvergensi media yang dikemukakan oleh Henry Jenkins. Teori ini mencakup teknologi, ekonomi, budaya, sosial, dan global. Dengan pendekatan deskriptif kualitatif, data dikumpulkan melalui wawancara mendalam dengan manajemen redaksi internal (seperti direktur konten, pemimpin redaksi, dan tim kreatif) serta konsumen eksternal (Ge...
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Pengaruh Aromaterapi Mawar terhadap Kualitas Tidur Ibu Hamil Trimester III di Wilayah Kerja Puskesmas Selindung Tahun 2025
Vol 17
, No 02
(2026)
Kondisi ibu selama kehamilan dipengaruhi oleh kualitas tidurnya. Peningkatan tekanan darah, yang berpotensi menyebabkan preeklamsia, dapat dipengaruhi oleh kualitas tidur ibu hamil. Tekanan darah tinggi dan kadar protein dalam urine adalah tanda gangguan kehamilan yang dikenal sebagai preeklampsia. Kondisi ini dapat membahayakan organ lain seperti ginjal, hati, dan mata, dan bahkan dapat menyebabkan kematian.
Sekitar 78% wanita hamil mengalami masalah tidur, di antaranya pada trimester III menca...
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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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Effect of Printing Speed on the Properties of 3D Printed Products Using Recycled PET Filament
Fitriyana, Deni Fajar
; Agung Efriyo Hadi
; Nugroho Suhodo
; Aldias Bahatmaka
; Januar Parlaungan Siregar
; Tezara Cionita
; Zuhriyan Ash Shiddieqy Bahlawan
; Achmad Yanuar Maulana
Recycled PET has been widely studied for its potential use in 3D printing applications. However, few research has examined how printing speed affects recycled PET filament products' mechanical and physical qualities. This research examines how printing speed influences the physical and mechanical qualities of 3D-printed PET filament goods created from mineral water bottle trash. In this study, filament fabrication is carried out using the homemade pultrusion machine, then the filament is used fo...
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Overview of Public Safety Center (PSC) 119 Call Patterns in Semarang City in 2024 as a Basis for Strengthening the Emergency Response System
Ramadhani, Salma Aulia
; Febriyanti, Anisya Ayu
; Agung Nugroho, Muhammad Farhan
; Tunggal Djaja, Melinda Valerie
; Nurhayati Loleh, Jevita Sri
; Wulandari, Respati
; Zaini, Ahmad
; Wardana, Wisnu
; Anggraini, Ira
; Handayani, Rustiyana Wuri
VISIKES
Vol 25
, No 1
(2026)
The Public Safety Center (PSC) 119 service is an integrated emergency medical system that plays a crucial role in Indonesia's pre-hospital healthcare system. The demand pattern for PSC-119 services can be influenced by various factors, including weather conditions and community mobility. In Semarang City, no research has described the weekly trends of PSC-119 calls based on case types and their relationship with weather parameters. This study aims to describe the weekly trend patterns of PSC-119...
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Posyandu Cadres’ Readiness in The Implementation of Integrated Primary Health Care
Nafilul Ahsaniar, Zyana
; Nurmandhani, Ririn
; Rimawati, Eti
; Kholiq Pradana, Firmansyah
; Ana Veria Setyawati, Vilda
; Iqbal, Muhammad
VISIKES
Vol 25
, No 1
(2026)
The transformation of Posyandu into the Integrated Primary Health Care (ILP) model was initiated by Indonesia’s Ministry of Health to strengthen primary health care services. The success of this transformation depends on the readiness of Posyandu cadres, who act as key field implementers. This study aimed to examine the relationship between change valence and information assessment with cadre readiness in supporting ILP implementation in Banyumanik District, Semarang City. A cross-sectional quan...
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Comparison of Gauss Quadrature and Newton–Cotes methods of order 10 in definite integral calculations
This study aims to evaluate and compare the accuracy of the Gauss Quadrature Method and the 10th Order Newton–Cotes Method based on numerical error in computing definite integrals, especially for complex functions that are difficult to solve analytically. The Gauss Quadrature Method studied includes the use of 2-point, 3-point, 4-point, 5-point, and 6-point rules, where the term points refers to the number of nodes used in the integration process. In contrast, the 10th-order Newton–Cotes Method...
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Effect of Different Layers on the Performance of Laminate Epoxy Composite Reinforced with Textile Waste
Thomas Junaedi
; Siregar, Januar Parlaungan
; Zalani, Mohamed Reza
; Imran, Al Ichlas
; Tezara Cionita
; Endah Murtiana Sari
; Deni Fajar Fitriyana
; Etanto Heiliano Wijayanto
Post-consumer textile waste poses significant environmental problems, but its potential for commercial recycling remains under-researched. Therefore, this study utilizes calico textile (CT) waste as reinforcement in polymer composites. The effect of layering number of CT in epoxy composite will be investigated. CT was varied with three layers, namely 1, 3, and 5 embedded in epoxy resin with the hand lay-up method in open molding. The mechanical testing of pure epoxy as a control point for tensil...
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