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All Journal Hydrogen: Jurnal Kependidikan Kimia Visioner : Jurnal Komunikasi, Bisnis dan Konten Kreatif
Nurohmat
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Arts Chemistry Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media

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Utilization of Rice Husk Waste in PVA-Based Hydrogel Formulation Hardi, Gilar Wisnu; Toruan, Sari Artauli Lumban; Nurohmat; Dewi, Berlian Kusuma; Nurjanah, Suci; Efendi, Bachtiar; Winani
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 6 (2025): December 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i6.18632

Abstract

The development of sustainable and cost-effective biomaterials is a primary focus in modern biomedical engineering. Addressing the critical need for circular economy solutions, this study introduces a novel ternary hydrogel composite integrating cellulose extracted from rice husk waste into a Polyvinyl Alcohol (PVA) and Guar Gum (GG) matrix. Cellulose was successfully extracted through alkalization and bleaching processes, with FTIR analysis confirming the removal of lignin and hemicellulose. The optimization of the hydrogel matrix demonstrated that a composition of 12.5% PVA and 1% Guar Gum (F2) exhibited superior mechanical properties, achieving a Tensile Strength (TS) of 10.49 MPa and Elongation at Break (EB) of 271.17%. However, the incorporation of rice husk cellulose (F3) unexpectedly resulted in a significant reduction in mechanical integrity, with TS dropping to 5.48 MPa. Uniquely, this research elucidates the mechanistic origin of this trade-off: SEM analysis provided definitive evidence that the failure was attributed to severe cellulose agglomeration and poor interfacial adhesion, which acted as structural defects. Furthermore, the study reveals a critical artifact where structural failure correlated with an increased Swelling Ratio (245.8%), proving that the observed high-water uptake was driven by passive void filling rather than true network hydrophilicity. The study concludes that while rice husk is a viable source of cellulose, simple solution blending is insufficient for reinforcement. Future research must prioritize high-energy dispersion techniques to overcome agglomeration and realize the material's potential for biomedical applications.
Digital Natives di Era Konvergensi: Analisis Pola dan Motivasi Menonton Televisi Linear Generasi Z Indonesia Berbasis Data Nielsen Audience Measurement Nurohmat
VISIONER : Jurnal Komunikasi, Bisnis dan Konten Kreatif Vol. 13 No. 1 (2026): Visioner : Jurnal Komunikasi, Bisnis dan Konten Kreatif
Publisher : Institut Media Digital Emtek

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65873/bahdpz83

Abstract

Penelitian ini bertujuan untuk menganalisis pola konsumsi dan motivasi Generasi Z (Gen Z) di Indonesia dalam menonton televisi linear di era konvergensi digital, dengan menggunakan data Nielsen Audience Measurement (NAM). Penelitian menggunakan pendekatan metode campuran (mixed-methods) dengan desain sekuensial eksplanatoris. Data kuantitatif dari Nielsen NAM (2023) dianalisis secara deskriptif, sementara data kualitatif dikumpulkan melalui Diskusi Kelompok Terarah (FGD) dengan 24 responden Gen Z (usia 18-24 tahun). Hasil penelitian menunjukkan bahwa penontonan TV Gen Z terkonsentrasi pada waktu utama (prime time, 19.00-22.00 WIB) dengan rating rata-rata 4,2, didominasi oleh genre hiburan (variety show, kompetisi realitas) dan olahraga sebagai tontonan yang ditunggu (appointment viewing). Durasi menonton rata-rata adalah 78 menit per hari, mengindikasikan perilaku snacking konten. Empat motivasi utama teridentifikasi: motif sosial-ritual (menonton bersama keluarga), keseruan momen (eventfulness - mengalami acara langsung), kemudahan (effortlessness - menghindari kelelahan memutuskan), dan latar audio-visual. Temuan menunjukkan bahwa TV linear telah mengalami refungsionalisasi bagi Gen Z -- dari sumber informasi utama menjadi media pelengkap untuk kebutuhan sosial dan situasional yang spesifik. Penelitian ini berkontribusi pada pengembangan teori Uses and Gratifications di era konvergensi dan memberikan wawasan praktis bagi industri penyiaran. 
Co-Authors Bachtiar Efendi, Bachtiar Dewi, Berlian Kusuma Hardi, Gilar Wisnu Nurjanah, Suci Toruan, Sari Artauli Lumban Winani