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All Journal INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Ilmiah Sains
Ferdy Ferdy
Universitas Sam Ratulangi
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Energy Materials Science & Nanotechnology Mathematics Physics

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IDENTIFIKASI PATAHAN MANADO DENGAN MENGGUNAKAN METODE GEOLISTRIK RESISTIVITAS KONFIGURASI WENNER-SCHLUMBERGER DI DESA WATUTUMOU II KECAMATAN KALAWAT KABUPATEN MINAHASA UTARA Faisal Mamonto; As'ari As'ari; Ferdy Ferdy
JURNAL ILMIAH SAINS Volume 16 Nomor 2, Oktober 2016
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (974.567 KB) | DOI: 10.35799/jis.16.2.2016.14023

Abstract

IDENTIFIKASI PATAHAN MANADO DENGAN MENGGUNAKAN METODE GEOLISTRIK RESISTIVITAS KONFIGURASI WENNER-SCHLUMBERGER DI DESA WATUTUMOU II KECAMATAN KALAWAT KABUPATEN MINAHASA UTARAABSTRAK Telah dilakukan penelitian tentang Identifikasi Patahan Manado yang melewati Desa Watutumou II Kecamatan Kalawat Kabupaten Minahasa Utara. Penelitian dilakukan dengan menggunakan alat Geolistrik Resistivitas multichannel and multielectrode resistivity and IP meter 46 simultaneous channel merek MAE X612-EM Konfigurasi Wenner-Schlumberger. Pengambilan data dilakukan pada 4 lintasan, 3 lintasan panjang bentangannya sebesar 480 meter, dan 1 lintasan panjang bentangannya sebesar 240 meter. Posisi lintasan disusun parallel satu dengan yang lain. Pengolahan data dilakukan dengan mengunakan perangkat lunak RES2DINV, menghasilkan gambar tampang lintang 2 dimensi citra bawah permukaan tanah pada lokasi penelitian. Analisis menunjukan bahwa pada semua lintasan rekahan teridentifikasi pada jarak 20 meter dari jalur Patahan Manado, dengan kedalaman 0 - 30 meter dari permukaan tanah, dan harga resistivitas sebesar 0 – 80 Ωm. Kata Kunci : Geolistrik, Wenner-Schlumberger, Patahan Manado.   IDENTIFICATION OF MANADO FAULT BY USING GEOELECTRICAL METHOD OF WENNER-SCHLUMBERGER RESISTIVITY CONFIGURATION IN THE VILLAGE OF WATUTUMOU II, DISTRICT OF KALAWAT, NORTH MINAHASA REGANCY ABSTRACT Has done research on the identification of Manado Fault which passes through the village of Watutumou II Kalawat district of North Minahasa Regency. Research is done by using the tool of Geoelectrical Resistivity multichannel and multielectrode and IP meter 46 simultaneous channel Wenner-Schlumberger configuration with brand of MAE X612-EM. The data collection was carried out on 4 lanes, where 3 of them have a range of length of 480 meter and 1 lane with length of 240 meter. Each of these lanes was assembled paralelly one another. The data processing was held with assistance of RES2DINV software. Its result gave an overview about the 2-dimensional transection of beneath-surface imaging in the research zone. According to the analysis outcome, a fracture identified at 20 meter from the Manado fault, with a depth of 0-30 meter above the ground's surface, and with an approximated value of resistivity of 0 - 80 Ωm. Keywords: Geoelectric, Wenner-Shlumberger, Manado fault.
Modified household pressure cookers as Hydrothermal Reactor for Production of Carbon Dots from Fish Scale Waste Dolfie Paulus Pandara; Stepanus Tangdan; Guntur Pasau; Ferdy Ferdy; Maria Daurina Bobanto; Gerald Hendrik Tamuntuan; Ping Astony Angmalisang; Kawengian Warouw Alex Masengi; Maureen Kumaunang
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 15, No 1 (2025): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v15i1.86405

Abstract

Recent advancements in the synthesis of carbon dots utilizing basic equipment are crucial for their large-scale production. This study explores the use of household pressure cookers to synthesize carbon dots from fish waste. A thermocouple and manometer are integrated into the cooker to regulate temperature and monitor pressure. Optimization of the equipment reveals that heating 2000 mL of distilled water to 100°C requires 20, 30, and 32 minutes with power inputs of 800 W, 700 W, and 600 W, respectively. The modified cooker achieves optimal pressure and temperature at 2.4 bars, 1.7 bars, and 1.5 bars, and 136°C, 123°C, and 122°C after 60 minutes of heating with the same power inputs. These results demonstrate that a household pressure cooker can effectively synthesize carbon dots. Experiments using dried Red Snapper fish spray powder, both unground and ground, at 800 W, 700 W, and 600 W, reach optimal pressure of 2.4 bar in 36, 49, and 58 minutes, and temperatures of 128°C, 131°C, and 136°C. Carbon dots are synthesized from fish scales as fine fibers with a 1:5 weight ratio of scales to distilled water, employing 600 W power, 2.4 bar pressure, 136°C temperature, 58 minutes of boiling, 5 minutes of centrifugation at 3500 rpm, and 45 minutes of ultrasound at 42 kHz. The formation of carbon dots is confirmed by an absorption peak at 405 nm in the UV-Vis spectrum, indicating high absorbance and bright blue fluorescence. Further investigation is required to optimize equipment using various fish scales and purification processes
Co-Authors As'ari As'ari Faisal Mamonto Gerald Hendrik Tamuntuan Guntur Pasau Kawengian Warouw Alex Masengi Maria Daurina Bobanto Maureen Kumaunang Pandara, Dolfie Paulus Ping Astony Angmalisang Stepanus Tangdan