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All Journal Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi International Journal of Hydrological and Environmental for Sustainability Jurnal Pengabdian Sosial
Marbun, Mahmuddin
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Identification of Underground River Flow Using VLF (Very Low Frequency) and Geoelectricity at Karstic Area Marbun, Mahmuddin; Sismanto, Sismanto; DE, Zuhrahmi; Tarique, Imran; Korai, Punhoon Khan
International Journal of Hydrological and Environmental for Sustainability Vol 2, No 3 (2023): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v2i3.332

Abstract

Mapping underground river karst areas in the karst mountains Cianjur, West Java, has been done using electromagnetic methods and Geoelectricity Dipole-dipole. Karst constituent formation region of West Java area is limestone, clay stone, limestone fractured, hard and dense limestone, and limestone containing no water (rigid). The aim of this research is to search for the existence of underground rivers using electromagnetic and geoelectric wave surveys. VLF method consists of 13 line with a length of 750 m and a 10 m spacing. Based on the results of data processing VLF method is known that the equivalent current density (ECD) demonstrated high conductive rocks. While Geoelectricity method consists of 10 line, the arrangement is a parallel between the distance of the line with a space of 20 m andlength between 300 m.VLF data interpretation results indicate anomalous equivalent current density (ECD) with high scores range from 180-300% indicated fractured limestones are occupied by water, while the resistivity anomaly from 0.45 to 7.40 Ω.m indicated as weathered limestone layers accumulated dengn clay stone, resistivity values 186-701 Ω.m, fractured limestones indicated that fills with water. With sizes ranging 5-15 m cavity, each line with nearly the same distance at a depth of approximately 15-105 m, there is a large cavity-cavity interconnected.
Identification of Groundwater Aquifers Using Geoelectric Methods with Schlumberger Configuration in Peatland Areas, West Kalimantan, Indonesia Rasmi, Rasmi; Sutanto, Yuris; Perdhana, Radhitya; Muliadi, Muliadi; Muhardi, Muhardi; Marbun, Mahmuddin; Machmud, Amir; Pratiwi, Elok Surya
International Journal of Hydrological and Environmental for Sustainability Vol 3, No 1 (2024): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v3i1.388

Abstract

The geoelectric-resistivity method with Schlumberger configuration is commonly used for groundwater exploration. This method helps identify changes in the resistivity of rock layers beneath the Earth's surface by flowing direct current (DC). In this research, geoelectric-resistivity was used to search for the existence of groundwater aquifers in water crisis areas with peat soil structures. In addition, this research aims to determine the depth of the aquifer layer based on resistivity values below the surface and  to identify variations in resistivity values below the surface. The method used in this research was the Schlumberger configuration resistivity geoelectric method with 4 measurement points, each with  a stretch length of 500 m . The research results show that the subsurface resistivity value in the Parit Haji Muksin II area is 2.69 ?m to 264 ?m. The unconfined aquifer at the research location was found at point 1 and point 2 at a depth of 3.94 m to 35.5 m, while the confined aquifer was found at points 3 and 4 at a depth of 13.6 m to 61.8 m. This study indicates the presence of potential groundwater resources in tropical peatlands, highlighting the necessity for further comprehensive research to ensure their sustainable utilization in the future.
Application of Induced Polarization and Resistivity to the Determination of the Location of Minerals in Extrusive Rock Area, Southern Mountains of Java, Indonesia Saparun, Moh; Akbar, Rajabal; Marbun, Mahmuddin; Dixit, Aparna; Saxena, Arti
International Journal of Hydrological and Environmental for Sustainability Vol 1, No 3 (2022): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v1i3.137

Abstract

Mountainous areas often have a lot of natural wealth. The existence of geological appearances in the form of outcrops which are products of intrusion and alteration, indicates that the Pacitan area is a mineralized zone. In this study, geophysical measurements were carried out using the Induced Polarization (IP) method in the area where mineralization was suspected. The polarization induction method is expected to prove the presence of a mineralized zone in the Pacitan area. From the research results, line 1, line 4, line 5, line 6 and line 7 are areas with high chargeability values. So it can be proven that the area with high resistivity and high chargeability is an area with mineralization. Judging from the geological conditions on the surface, there are also outcrops which show that there is an intrusion and the result of alteration. So it can be concluded that the area has a fairly high mineralization. In measuring the correlation between magnetic anomalies and IP, the results are very supportive of each other that the area is a mineralized area, if we look at the resistivity, and chargebility.
Desain Roda Bersirip Standar dan Bersirip Buka Tutup untuk Pengujian di Lahan Sawah Susanto, Herdi; Jayadi, Farid; Fathi, Syahrul; Marbun, Mahmuddin; Munawir, Al; Hasdi, Syaiful
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 10, No 1 (2024): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v10i1.9336

Abstract

The finned drive wheel technology is widely used for wet rice fields. Currently, finned drive wheels for peat fields have not been developed and still use traditional agricultural tools such as hoes and sickles, while the finned drive wheels for wet rice fields are not yet able to work optimally on peat rice fields. The driving wheel model and testing in peat rice fields were carried out in this research. Design and manufacturing were carried out by referring to previous research literature. This initial research was carried out in wet rice fields on open-close finned drive wheels and standard finned wheels, with the aim of measuring the comparative level of performance of the two wheel models. The wheel performance measured is sinkage and wheel rotational speed. The research produced two models of driving wheels, namely the standard fin type with a driving wheel diameter of 35 cm and a number of 8 fins and the open-close fin type producing a driving wheel diameter of 40 cm with 4 arcuate fins on the top surface of the driving wheel. Standard fin type drive wheels have smaller sinkage (11% on average) compared to open-close fin type wheels. The finned drive wheel with the open-close type has an average speed level that is 27.7% higher when compared to the standard finned type.Keywords – wheel drive, standard fins, open-close fins, sinkage, wheel speed
Pelatihan Penggunaan Aplikasi Sketchup Desain Interior  Pada Program Keahlian Desain Permodelan dan Informasi Bangunan SMK Negeri 2 Banda Aceh Zuhrahmi, Zuhrahmi; Marbun, Mahmuddin; Asdiana, Asdiana; Zulyaden, Zulyaden; Veranita, Veranita; Rinaldy, Rinaldy
Jurnal Pengabdian Sosial Vol. 1 No. 9 (2024): Juli
Publisher : PT. Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/2z3mky89

Abstract

Penggunaan aplikasi SketchUp dalam desain interior telah menjadi fokus utama dalam pelatihan untuk program keahlian desain permodelan dan informasi bangunan. Tujuan dari penelitian ini adalah untuk mengeksplorasi efektivitas pelatihan menggunakan SketchUp dalam meningkatkan keterampilan dan pemahaman siswa Program Keahlian Desain Permodelan dan Informasi Bangunan SMK Negeri 2 Banda Aceh dalam merancang desain interior. Metode pelatihan yang digunakan mencakup sesi praktik langsung, studi kasus, dan diskusi kelompok yang dipandu oleh instruktur berpengalaman. Pelatian ini dilakukan dengan menganalisis respons peserta terhadap materi, sebelum dan sesudah mengikuti kursus . Hasilnya menunjukkan peningkatan yang signifikan dalam pemahaman konsep dasar desain interior dan kemampuan teknis menggunakan aplikasi. siswa Program Keahlian Desain Permodelan dan Informasi Bangunan SMK Negeri 2 Banda Aceh menunjukkan tingkat kepuasan yang tinggi terhadap pendekatan pelatihan yang interaktif dan terstruktur. Hasil dari penelitian ini memberikan rekomendasi untuk integrasi yang lebih baik dari pelatihan aplikasi SketchUp dalam kurikulum pendidikan desain interior, serta pentingnya pelatihan yang berkelanjutan untuk memastikan siswa dapat mengembangkan keterampilan mereka secara maksimal dalam merancang dan memvisualisasikan ruang interior menggunakan teknologi terkini seperti SketchUp.
Co-Authors Akbar, Rajabal Al Munawir Amir Machmud, Amir Asdiana, Asdiana DE, Zuhrahmi Dixit, Aparna Hasdi, Syaiful Herdi Susanto Jayadi, Farid Korai, Punhoon Khan Muhardi Muhardi Muliadi Perdhana, Radhitya Pratiwi, Elok Surya Rasmi Rasmi, Rasmi Rinaldy Rinaldy Saparun, Moh Saxena, Arti Sismanto Sismanto Syahrul Fathi Tarique, Imran Veranita, Veranita Yuris Sutanto Zuhrahmi, Zuhrahmi Zulyaden, Zulyaden