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Afrioni Roma Rio
Sam Ratulangi University
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Health Professions Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Other

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Pelatihan Penerapan IoT (Internet of Things) Melalui Perancangan Smart City untuk Siswa SMA Negeri 1 Tomohon dan SMA Kristen 1 Tomohon Berton Maruli Siahaan; Maria Daurina Bobanto; Afrioni Roma Rio
Jurnal Lentera: Penelitian dan Pengabdian Masyarakat Vol. 6 No. 1 (2025): Jurnal Lentera: Penelitian dan Pengabdian Masyarakat
Publisher : Yayasan Bina Lentera Insan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57207/qrd36n60

Abstract

The Internet of Things (IoT) plays an essential role in the era of the fourth industrial revolution and the Smart City concept, now increasingly implemented across various sectors, including education. This technology enables remote access and monitoring of multiple devices, supporting efficiency and responsiveness in information management. In the educational context, introducing IoT technology at the high school level aims to equip students with foundational knowledge and skills, better preparing them for future technological advancements. This training was conducted at SMA Negeri 1 Tomohon and SMA Kristen 1 Tomohon, focusing on temperature monitoring as part of a Smart City simulation. The temperature monitoring system introduced allows real-time data access through internet and mobile devices, offering students a concrete experience of IoT’s potential in daily life. During the training, students had the opportunity to observe and interact with pre-designed devices, gaining insights into installation processes, connectivity, data collection, and data processing. Evaluation results indicate that the program successfully enhanced students' understanding and interest in IoT technology, as well as strengthened their motivation to engage with relevant digital technology developments. This training is expected to be an initial step towards enabling students to use IoT as an innovative solution in the future.
Pemetaan Zona Iklim di Sulawesi Utara Berdasarkan Kelembaban dan Presipitasi Menggunakan K-Means Clustering Afrioni Roma Rio
Jurnal Lentera: Penelitian dan Pengabdian Masyarakat Vol. 6 No. 1 (2025): Jurnal Lentera: Penelitian dan Pengabdian Masyarakat
Publisher : Yayasan Bina Lentera Insan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57207/xhf69j50

Abstract

Klasterisasi kelembaban dan presipitasi di Sulawesi Utara dilakukan dalam rangka memetakan pola curah hujan di wilayah tersebut. Kelembaban relatif dan presipitasi adalah dua parameter penting dalam meteorologi yang sering digunakan untuk memprediksi pola curah hujan. Dalam penelitian ini, data yang digunakan adalah data dalam rentang lima tahun dari tahun 2020 hingga tahun 2024 yang diambil dari 171 kecamatan di Sulawesi Utara. Metode k-means clustering digunakan untuk mengelompokkan kecamatan-kecamatan di Sulawesi Utara berdasarkan rata-rata kelembaban relatif dan presipitasi. Dalam analisis ini, empat klaster kecamatan berhasil dihasilkan. Meskipun rata-rata kelembaban relatif tidak menunjukkan perbedaan yang signifikan antara keempat klaster, namun terdapat perbedaan signifikan dalam sebaran data presipitasi antara klaster-klaster tersebut. Klaster 1 merupakan klaster dengan tingkat presipitasi tertinggi, diikuti oleh klaster 2 dan klaster 3. Klaster 4 merupakan klaster dengan tingkat presipitasi paling rendah dibandingkan dengan klaster-klaster yang lain. Analisis ini dapat menjadi dasar bagi pemerintah dan lembaga terkait dalam memetakan pola curah hujan di Sulawesi Utara dan membantu dalam perencanaan dan pengelolaan sumber daya air. Selain itu, informasi tentang sebaran data presipitasi pada setiap klaster dapat menjadi pedoman dalam memetakan potensi bencana banjir dan tanah longsor di wilayah tersebut. Penelitian ini juga dapat menjadi acuan bagi penelitian lanjutan tentang pola curah hujan di Sulawesi Utara.
Biomass-Derived Activated Carbon via Na₂CO₃, KOH, and ZnCl₂ Activation: A Comparative Physicochemical Study toward Energy Storage Electrodes Bakti, Andi Ikhtiar; Rio, Afrioni Roma; Mosey, Handy Indra Regain; Jumriadi, Jumriadi
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 14 No 2 (2025): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v14i2.29076

Abstract

This study investigates the fabrication of granular activated carbon (AC) from biomass waste using three chemical activating agents: sodium carbonate (Na₂CO₃), potassium hydroxide (KOH), and zinc chloride (ZnCl₂), to evaluate their effects on structural, morphological, and electrical properties relevant to energy storage applications. An experimental laboratory-based method with a comparative activation approach was employed. The resulting activated carbon samples were characterized by X-ray diffraction (XRD), scanning electron microscopy coupled with energy-dispersive spectroscopy (SEM–EDS), and iodine adsorption and electrical measurements. XRD analysis revealed that all samples predominantly exhibit amorphous or turbostratic carbon structures with partial structural ordering, with ZnCl₂-activated samples showing higher short-range ordering than those activated with the other activators. SEM observations indicated qualitative differences in surface morphology and pore development, with more pronounced pores in the KOH-activated carbon. EDS analysis confirmed carbon-rich surfaces with minor residual inorganic elements originating from the activating agents and biomass precursor. Iodine adsorption results, used as a proxy indicator of microporosity, showed that the KOH-activated carbon exhibited the highest iodine number (630.70 mg/g). Electrical measurements, reported as apparent electrical conductivity under the applied packed-bed measurement conditions, also indicated the highest value for the KOH-activated sample (1724.10 S/m). Based on the parameters measured in this study, KOH activation produced the most favorable combined iodine adsorption and apparent electrical conductivity among the activation routes investigated. Therefore, KOH-activated biomass-derived carbon is identified as the most promising candidate for subsequent electrochemical validation toward supercapacitor electrode applications.
Co-Authors Bakti, Andi Ikhtiar Ernawatil Gani, Ernawatil Freddy Haryanto Handy I. R. Mosey Jayawarsa, A.A. Ketut Jumriadi Mahendra Kusuma Nugraha Maria Daurina Bobanto Salsabila, Unik Hanifah