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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.
Green conversion of red snapper fish scale-derived carbon dots and its absorption properties for solar thermal desalination Dolfie Paulus Pandara; Gerald Hendrik Tamuntuan; Maria Daurina Bobanto; Ferdy Ferdy
International Journal of Advances in Applied Sciences Vol 13, No 1: March 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v13.i1.pp84-92

Abstract

Fisheries wastes have been used as precursors for the synthesis of carbon dots (CDs). These wastes are often converted using hydrothermal methods which require high temperature and pressure, leading to high production costs, especially for large-scale production. This study aims to innovate a low-cost synthesis method with the potential for large-scale production. Green conversion of CDs from red snapper fish scale waste was carried out using a combination of immersion method and ultrasonic wave treatment. The results showed that the products had an absorption peak at a wavelength of 404 nm and an energy bandgap of 2.7 eV. Excitation at 404 nm was associated with non-bonding n orbital to antibonding orbital ????* electronic transitions due to the presence of free electron pairs and related with carbon-nitrogen (C-N) bonds. The 2.7 eV energy bandgap was associated with the state of amine groups containing free electron pairs located on the surface of CDs as well as blue light emission at a wavelength of 460 nm when CDs were illuminated with ultraviolet light. Red snapper fish scale-derived CDs showed fluorescence characteristics and the presence of nitrogen elements, making them potential photothermal materials for solar-powered seawater desalination processes.