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All Journal Journal Serambi Engineering (JSE) Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Dinda Putri Arnindi
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Public Health Social Sciences

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Natural Mosquito Repellet Socialization for Dengue Prevention in Rural Areas: Sosialisasi Semprotan Anti Nyamuk Alami untuk Pencegahan Demama Berrdarah M Zufar Irhab S Putra; Sekar Arum Melati; Dinda Putri Arnindi; Desy Miftachul Ilmi Arifin Putri; Trimono
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol. 9 No. 3 (2025): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : DPD Jatim Perkumpulan Dosen Indonesia Semesta

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Dengue fever remains a significant public health concern, necessitating comprehensive prevention strategies, including vector control. This community engagement study explores the implementation of natural mosquito repellent spray production using lemongrass as a strategic approach to mitigate dengue transmission in Lontar Village. The research aims to analyze the impact of this natural repellent on community health, identifying challenges and opportunities associated with its adoption and sustainable production. Employing a mixed-methods approach, the study incorporates community surveys, interviews with local residents and health officials, and direct observation during the socialization and production phases. Findings indicate that the provision of natural mosquito repellent significantly enhances community participation in dengue prevention, offering an accessible and environmentally friendly alternative to chemical repellents. Key challenges include initial awareness dissemination regarding the benefits of natural repllents and ensuring consistent home-based production. However, the benefits demonstrate substantial potential for improving local health outcomes, fostering self-reliance in disease prevention, and promoting the use of local resources. The study suggests targeted support mechanisms, including continuous education, hands-on workshops, and simplified production guidelines to maximize the benefits of this natural repellent. These findings contribute to understanding the role of community-based interventions in local health development and provide practical insights for supporting disease prevention efforts in rural contexts. The research highlights the importance of strategic interventions that can empower communities to adopt sustainable health practices.
Synthesis and Characterization of Hydroxyapatite from Crab Shell Waste (Scylla Serrata) Using the Precipitation Method Nisa, Assholihatun; Dinda Putri Arnindi; Ni Ketut Sari
Jurnal Serambi Engineering Vol. 11 No. 2 (2026): April 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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The utilization of crab shell waste as a calcium source represents a value-added material development strategy while simultaneously reducing environmental pollution from fishery waste. This study aimed to synthesize hydroxyapatite (HAp) derived from crab shell waste via the precipitation method and to evaluate the effect of calcination temperature (800, 900, 1000, 1100, and 1200 °C) and Na₂HPO₄ concentration (0.75, 1.3, 1.85, 2.4, and 2.95 M) on the resulting material characteristics. The crab shells were initially calcined to obtain CaO as the calcium source, followed by reaction with Na₂HPO₄ solution as the phosphate precursor to form hydroxyapatite. The synthesized product was subsequently dried and calcined according to the designated temperature variations. Characterization was carried out using XRF, XRD, and SEM analyses. XRF results indicated the dominance of Ca and P elements with a Ca/P ratio approaching the stoichiometric value of hydroxyapatite (1.67). XRD patterns confirmed the formation of crystalline HAp phases, with increasing peak intensity and sharpness at higher calcination temperatures, indicating an enhanced degree of crystallinity. Variations in Na₂HPO₄ concentration influenced phase purity and the Ca/P ratio. SEM analysis revealed sub-spherical particle morphology with a tendency toward agglomeration at higher temperatures due to sintering effects. Overall, the findings demonstrate that controlling calcination temperature and phosphate precursor concentration plays a critical role in determining the composition, crystallinity, and morphology of hydroxyapatite synthesized from crab shell waste.
Co-Authors Desy Miftachul Ilmi Arifin Putri M Zufar Irhab S Putra Ni Ketut Sari Nisa, Assholihatun Sekar Arum Melati Trimono, Trimono