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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA Astonjadro SELODANG MAYANG Journal La Lifesci Journal La Multiapp Jurnal Teknik Sipil Macca Ranah Research : Journal of Multidisciplinary Research and Development Warta LPM Celebes Journal of Community Services Seminar Nasional Riset dan Teknologi (SEMNAS RISTEK)
Desi, Natsar
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Evaluation of Slope Stability in Mining Areas Using the Morgenstern Price Method Haeriska, Haeriska; Chaerul, Muhammad; Desi, Natsar; Harun, A. Muh. Yusuf; Erniati, Erniati; Marzuki, Ismail
Journal La Multiapp Vol. 6 No. 6 (2025): Journal La Multiapp
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallamultiapp.v6i6.2540

Abstract

Indonesia’s mining sector, particularly in areas like Morowali Regency, Central Sulawesi, faces significant geotechnical challenges due to its location in the Pacific Ring of Fire. One of the key concerns in open-pit mining operations is slope instability, which can lead to landslides, threaten worker safety, damage infrastructure, and disrupt production. This study evaluates the slope stability in the Sambalagi site of PT. Wosindo Berkat Abadi using the Morgenstern-Price method, a limit equilibrium approach known for its accuracy in heterogeneous slope conditions. Field data were collected, including slope geometry, geological conditions, material strength, and hydrogeological factors. The safety factor (FK) was calculated based on geotechnical parameters such as cohesion, internal friction angle, and unit weight of the slope materials primarily saprolite and limonite. The actual slope FK value at PIT D was found to be 0.974, below the standard requirement (≥1.3) set by the Ministerial Decree No. 1827K/30/MEM/2018. To improve stability, a revised slope design was proposed, including reducing slope angles to 35°, increasing bench widths to 2 meters, and decreasing slope height per bench to 4 meters. The simulation of this revised geometry showed that it could achieve the required FK value. The study contributes to safer and more efficient mine planning by demonstrating the importance of integrating detailed geotechnical analysis in slope design, especially in tropical high-rainfall mining regions.
MODEL TARIKAN PERGERAKAN TRANSPORTASI PADA PASAR LAKESSI KOTA PAREPARE TRADISIONAL Anugrah, Anugrah; Gusty, Sri; Desi, Natsar
Semnas Ristek (Seminar Nasional Riset dan Inovasi Teknologi) Vol 7, No 1 (2023): SEMNAS RISTEK 2023
Publisher : Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/semnasristek.v7i1.6412

Abstract

Evaluasi Efektifitas Bus Rapid Transit (BRT) Mamminasata sebagai Transportasi Massal Berdasarkan Permenhub RI No. PM 15 Tahun 2019 Rachman, David Sumantri; Indrayani, Poppy; Gusty, Sri; Desi, Natsar
Jurnal Teknik Sipil MACCA Vol. 10 No. 1 (2025): Jurnal Teknik Sipil MACCA (FEBRUARI 2025)
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/t3j6j703

Abstract

Kementerian Perhubungan RI meluncurkan program angkutan massal di kawasan perkotaan berbasis jalan, bernama Bus Rapid Transit (BRT) yang tertuang dalam Peraturan Menteri Perhubungan Republik Indonesia No. PM 15 Tahun 2019. Pada tahun 2021 dimulailah penerapan program angkutan umum massal berbasis jalan di wilayah perkotaan dengan nama BRT Mamminasata (Teman Bus) di Kota Makassar. Keberadaan BRT Mamminasata di tengah-tengah padatnya kendaraan di Kota Makassar peneliti merasa tertarik pada bagaimana efektifitas dalam implemetasi program BRT selama waktu pengoperasiannya. Tujuan dari penelitian ini adalah untuk menganalisis tingkat efektifitas BRT Mamminasata sebagai transportasi massal di Kota Makassar. Metode yang digunakan yang digunakan adalah pendekatan kualitatif dengan tambahan pendekatan kuantitatif dengan metode skala likert untuk menganalisis kuesioner, yang dimana data-data yang dibutuhkan berasal dari data primer dan data sekunder. Hasil penelitian menunjukkan bahwa BRT Mamminasata hingga saat ini belum mencapai efektifitasnya disebabkan beberapa hal mulai dari keterbatasan unit yang ada, lajur yang belum tersedia secara mandiri, halte yang kurang memadai, belum adanya integrasi dengan angkutan penumpang, serta aplikasi yang masih terbatas kegunaannya.
DESAIN PENGELOLAAN DAN PEMANTAUAN DAMPAK LINGKUNGAN TERHADAP REKONSTRUKSI GEDUNG KANTOR GUBERNUR SULAWESI BARAT Satriawan, Andi Muh. Dayri; Desi, Natsar; Indrayani, Poppy
Eksakta : Jurnal Penelitian dan Pembelajaran MIPA Vol 9, No 1 (2024): Eksakta : Jurnal Penelitian dan Pembelajaran MIPA
Publisher : Fakultas Keguruan Dan Ilmu Pendidikan, UM-Tapsel

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/eksakta.v9i1.87-99

Abstract

As a form of service to the community, Pj. The Governor of West Sulawesi plans to rehabilitate and reconstruct the West Sulawesi Governor's Office Building. As a result of these activities it has negative impacts in the form of reduced air quality, increased noise, increased surface water runoff, health problems for local employees, and piles of domestic waste resulting from construction activities. In order to overcome the negative impacts that occur and develop the positive impacts of management efforts, it is necessary to carry out environmental impact studies that occur during the pre-construction, construction and operation stages. The purpose of this study is to obtain the results of an managing of environmental impact studies and countermeasures in minimizing the impacts that occur during the pre-construction, construction and operation stages. The method used in this research is the observation method and the scoping method to determine the impact and good handling of the environment. This study uses primary data in the form of field surveys, interviews, and is supported by secondary data. The result of this research is to know the initial environmental baseline conditions at the research location and obtain an analysis of the environmental impacts that occur and ways to minimize the impact with good handling in order to create an environmentally friendly construction.
Effectiveness of Ecological Management to Support Reclamation on Tails Land at The Milepost 21 Reclamation and Biodiversity Research Center Based on Environmental Policy Yoom, Lilis Irjayanti; Chaerul, Muhammad; Desi, Natsar
Journal La Lifesci Vol. 6 No. 4 (2025): Journal La Lifesci
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallalifesci.v6i4.2624

Abstract

This study investigates the effectiveness of ecological management in supporting reclamation of tailings land at the Mile Post 21 Reclamation and Biodiversity Research Center, PT Freeport Indonesia. Using a qualitative descriptive approach, the research employs primary data obtained through interviews, documentation, and direct observation, complemented by secondary data from archives, reports, and company records. The analysis is guided by ISO 14001 environmental management principles, using a checklist method adapted from the Global Environmental Management Initiative (GEMI) to evaluate ecological, technical, socio-economic, and regulatory aspects of reclamation practices. Findings reveal that ecological management at Mile Post 21 has been highly effective, achieving more than 80% compliance with ISO 14001 indicators. Vegetation cover increased from less than 10% to over 75%, with more than 160 planted species complemented by natural succession involving over 500 species. Soil quality improved significantly, with organic carbon rising from <0.5% to 2.5%, pH levels increasing toward neutrality, and cation exchange capacity reaching medium–high levels. These changes facilitated the restoration of ecological functions and supported biodiversity recovery. Moreover, reclaimed land has been transformed into productive agricultural areas integrating crops, livestock, and aquaculture, providing socio-economic benefits for local communities and involving indigenous landowners in sustainable management. Despite technical challenges related to poor soil properties and managerial constraints such as long-term funding, the program demonstrates that ecological management, when implemented systematically under ISO 14001, can effectively restore degraded post-mining land into ecologically resilient and socially beneficial systems.
A GIS-Based Analysis of Coastal Abrasion Risk Potential Jamilah, Jamilah; Chaerul, Muhammad; Desi, Natsar; Erniati, Erniati; Harun, Muh. A. Yusuf; Dirman, Eris Nur
Journal La Lifesci Vol. 6 No. 4 (2025): Journal La Lifesci
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallalifesci.v6i4.2650

Abstract

Coastal abrasion poses a significant threat to Indonesia, an archipelagic nation with one of the world’s longest coastlines. The phenomenon is particularly severe in Napabalano District, Muna Regency, where dense settlements, economic activities, and declining mangrove ecosystems increase exposure to erosion hazards. This study aims to assess the risk of coastal abrasion in Napabalano District using a GIS-based approach aligned with the Indonesian National Disaster Management Authority (BNPB) framework. Primary data, including GPS coordinates, satellite imagery, and field surveys, were integrated with secondary data such as demographic statistics, oceanographic parameters, and historical records of abrasion events. Spatial analysis in ArcGIS was employed to evaluate vulnerability, capacity, hazard, and disaster risk indices. Results show that all villages in Napabalano District fall into the high-risk category, with Napabalano and Napalakura recording the highest risk values due to concentrated populations, limited mangrove protection, and inadequate disaster management capacity. Social and economic vulnerabilities, including high poverty ratios and dependence on coastal livelihoods, exacerbate exposure, while institutional capacity remains critically low, marked by weak early warning systems and limited community preparedness. Mitigation strategies proposed include mangrove rehabilitation, strict coastal zoning enforcement, community-based disaster preparedness programs, and the establishment of effective early warning systems. These findings highlight the urgent need for integrated, multi-stakeholder approaches to strengthen resilience against coastal abrasion. The study provides a strategic basis for local government and community planning in managing and reducing the impacts of coastal hazards in Napabalano District.
Environmental Sustainability of Nickel Waste Utilization in Porous Asphalt: Toward Green and Circular Road Infrastructure Fatmeriany, Fatmeriany; Desi, Natsar; Chaerul, Muhammad; Harun, A. Muh. Yusuf; Erniati, Erniati; Marzuki, Ismail; Gusty, Sri
Journal La Lifesci Vol. 6 No. 4 (2025): Journal La Lifesci
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallalifesci.v6i4.2661

Abstract

The rapid growth of road infrastructure in Indonesia has increased the demand of construction materials and at the same time, intensified environmental issues. The study explores the potential application of nickel waste- which is a byproduct readily available to Indonesia in the smelting of nickel- as a partial replacement to coarse aggregate in porous asphalt mixtures. The research not only assesses the technical performance but also the environmental impact of the nickel waste substitution which can be regarded as a contribution to the literature on sustainable management of the construction process and the circular economy. Key parameters such as stability, flow, void content and the Marshall Quotient were tested in the laboratory and were evaluated as per the Bina Marga and SNI requirements. The results refer to the fact that nickel waste may meet a number of technical requirements, reaching an ideal concentration of asphalt into 5.5 0-100 that, at the same time, can provide waste minimization and possible cost-saving benefits. However, due to the fact that nickel slag contains heavy metals, it requires the use of strong environmental risk management, such as leaching control and stabilization technologies. These findings indicate that the use of nickel waste is more than a technical innovation; it is a strategic direction of the ability to become resource-efficient, symbiotic in the industrial industry, and to govern the operation of infrastructure in a sustainable manner. Placing industrial waste in a new category as productive input, this research sheds some light on how policy can be changed, how to innovate in procurements, and how government, industry, and academia can collaborate. The study concludes that the addition of nickel waste to the porous asphalt mixtures could help improve the performance of roads, reduce environmental ecological impacts, and promote the green infrastructure agenda in Indonesia, assuming that there are regulatory protections and a systematic environmental check-up.
Evaluation of the Performance of Sustainable Irrigation Systems in Tertiary Networks in the Lamasi Kanan Irrigation Area, Luwu Regency Desi, Natsar; Nyiwi, Andri Andi; Chaerul, Muh.; Hadi, Abri
Jurnal Penelitian Pendidikan IPA Vol 11 No 12 (2025): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i12.12418

Abstract

Sustainable irrigation management plays a crucial role in supporting efficient and environmentally friendly agriculture. This study aims to identify the existing condition of the irrigation network, analyze the performance index of the tertiary irrigation system, and explain the concept of sustainable irrigation management in the Lamasi Irrigation Area. The study was conducted at Lamasi Dam, Batusitanduk Village, Walenrang Sub-district, Luwu Regency, using a quantitative descriptive approach. Secondary data were obtained from maps and irrigation network schemes of the Public Works Department of South Sulawesi Province, while primary data were collected through field surveys related to the physical condition of irrigation channels and structures. Performance analysis used irrigation performance index indicators and the ePAKSI application. The results showed a reliable discharge of 10 m³/second with 78 water user farmer associations. Irrigation performance was classified as good with a value of 84.83%, while the tertiary irrigation network condition index was 73.30% (moderate category) as found in this study, with a damage level of 21–40% requiring regular maintenance. The conclusion indicates the need for improved network maintenance and strengthening collaboration between stakeholders based on information technology.
ANALISIS PEMANFAATAN FLY ASH SEBAGAI FILLER TERHADAP KINERJA CAMPURAN ASPAL BERONGGA MENGGUNAKAN SPESIFIKASI ( ROAD ENGGINERING ASSOSIATION OF MALAYSIA) REAM ASH Lismawati, Lismawati; Desi, Natsar; Bachtiar, Erniati; Chaeruel, M; Muh Yusuf Harun, A; Mahmud, Mahmud; Gusty, Sri
Selodang Mayang: Jurnal Ilmiah Badan Perencanaan Pembangunan Daerah Kabupaten Indragiri Hilir Vol. 11 No. 3 (2025): Jurnal Selodang Mayang
Publisher : Badan Perencanaan Pembangunan Daerah Kabupaten Indragiri Hilir Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47521/selodangmayang.v11i3.485

Abstract

The growth in the number of motor vehicles and high rainfall intensity increases the risk of water ponding on roads, thereby requiring pavement construction that is both safe and has good drainage capability. Porous asphalt is one solution; however, it tends to have lower structural stability due to its low filler content. Fly ash is a fine particle deposit resulting from coal combustion residue. This study examines the utilization of fly ash waste from the Nusantara Power Punagaya coal-fired power plant in Jeneponto as a filler substitute in porous asphalt mixtures based on REAM 2008. The aim is to evaluate the effect of fly ash variations (0%, 50%, 100%) on Marshall stability, abrasion resistance (Cantabro), and the microstructure of the mixture. Experimental methods were carried out in the laboratory, including testing the physical properties of aggregates and the chemical composition of fly ash, mix design, and SEM-EDS analysis. The results show that the use of fly ash meets the specifications for VIM, VMA, stability, flow, and Marshall Quotient (MQ), except for VFB, which did not meet the specifications for all variations. Cantabro weight loss values were 8.53% (0%), 10.27% (50%), and 9.77% (100%). SEM-EDS analysis revealed that fly ash particles bond well with asphalt, with dominant elements C (45.38%) and Si (33.84%), along with the formation of a new carbon (C). These findings indicate the potential of fly ash as an environmentally friendly filler to improve porous asphalt performance. Pertumbuhan jumlah kendaraan bermotor dan intensitas curah hujan yang tinggi meningkatkan risiko genangan air di jalan, sehingga diperlukan konstruksi perkerasan yang aman dan memiliki kemampuan drainase baik. Aspal berongga (porous asphalt) menjadi salah satu solusi, namun cenderung kurang stabil secara struktural akibat rendahnya kadar filler. Fly ash adalah partikel halus yang merupakan endapan dari tumpukan bubuk. Penelitian ini mengkaji pemanfaatan limbah fly ash dari PLTU Nusantara Power Punagaya, Jeneponto, sebagai pengganti filler dalam campuran aspal berongga sesuai spesifikasi REAM 2008. Penelitian ini untuk mengevaluasi pengaruh variasi fly ash (0%, 50%, 100%) terhadap stabilitas Marshall, ketahanan aus (Cantabro), serta mikrostruktur campuran. Metode eksperimen dilakukan di laboratorium dengan pengujian sifat fisik agregat dan kimia fly ash, desain campuran, serta uji SEM-EDS. Hasil menunjukkan bahwa penggunaan fly ash mampu memenuhi spesifikasi pada parameter VIM, VMA, stabilitas, flow, dan Marshall Quotient (MQ), kecuali VFB yang tidak terpenuhi pada semua variasi. Nilai kehilangan berat Cantabro masing-masing sebesar 8,53% (0%), 10,27% (50%), dan 9,77% (100%). Analisis SEM-EDS mengungkap bahwa partikel fly ash berikatan baik dengan aspal, serta terdapat unsur dominan C (45,38%) dan Si (33,84%), dengan pembentukan senyawa baru karbon (C). Temuan ini menunjukkan potensi fly ash sebagai filler ramah lingkungan untuk meningkatkan kinerja aspal berongga.
ANALISIS TEMPAT EVAKUASI SEMENTARA (TES) BERDASARKAN PETA POTENSI BAHAYA TSUNAMI DI KECAMATAN UJUNG BULU, KABUPATEN BULUKUMBA Imran T, Muh.; Chaerul, Muh; Desi, Natsar; Bachtiar, Erniati; Yusuf Harun, A; Marzuki, Ismail
Selodang Mayang: Jurnal Ilmiah Badan Perencanaan Pembangunan Daerah Kabupaten Indragiri Hilir Vol. 11 No. 3 (2025): Jurnal Selodang Mayang
Publisher : Badan Perencanaan Pembangunan Daerah Kabupaten Indragiri Hilir Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47521/selodangmayang.v11i3.488

Abstract

This study analyzes the determination of Temporary Evacuation Shelters (TES) based on tsunami hazard mapping in Ujung Bulu District, Bulukumba Regency. The tsunami hazard assessment was carried out using the Cornell Multi-grid Coupled Tsunami (COMCOT) model with a scenario from the Flores Back Arc Thrust (Nusa Tenggara Barat segment, M7.5). Simulation results indicate that tsunami arrival times range between 49 and 56 minutes with wave heights of 0,2 - 1.96 meters, and a maximum inundation distance of 998 meters inland. Based on spatial analysis, field survey, and GIS processing, 6 TES locations are recommended across several sub-districts in Ujung Bulu, such as Bintarore, Tanah Kongkong, Caile, and Kalumeme. The TES locations are positioned 360–1130 meters from the coastline, with walking times between 5.3 and 15.2 minutes. These findings highlight the importance of spatial-based disaster preparedness strategies to minimize casualties and improve community resilience. Penelitian ini menganalisis penentuan Tempat Evakuasi Sementara (TES) berdasarkan pemetaan bahaya tsunami di Kecamatan Ujung Bulu, Kabupaten Bulukumba. Penilaian bahaya tsunami dilakukan menggunakan model Cornell Multi-grid Coupled Tsunami (COMCOT) dengan skenario gempa dari Flores Back Arc Thrust (segmen Nusa Tenggara Barat, M7.5). Hasil simulasi menunjukkan waktu tiba tsunami berkisar antara 49-56 menit dengan tinggi gelombang 0.2 - 1,96 meter serta jarak genangan maksimum mencapai 998 meter ke daratan. Berdasarkan analisis spasial, survey lapangan dan pengolahan GIS, direkomendasikan 6 lokasi TES yang tersebar di beberapa kelurahan di Ujung Bulu yaitu Bintarore, Tanah Kongkong, Caile, dan Kalumeme. Lokasi TES berada pada jarak 360-1.130 meter dari garis pantai dengan waktu tempuh berjalan kaki antara 5,3-15,2 menit. Temuan ini menegaskan pentingnya strategi kesiapsiagaan bencana berbasis keruangan untuk meminimalisir korban jiwa dan meningkatkan ketangguhan masyarakat.
Co-Authors Abdul Karim Abdul Karim Abu, Arman Andi Muh. Dayri Satriawan Anugrah, Anugrah Asrudin, Asrudin Chaeruel, M Chaerul, Muh Dirman, Eris Nur Erniati Bachtiar Erniati Erniati Fatmeriany, Fatmeriany Gusty, Sri Hadi, Abri Haeriska, Haeriska Harun, A. Muh. Yusuf Harun, A. Yusuf Harun, Muh. A. Yusuf Idris, M. Naufal Az Zarqan Imran T, Muh. Irmawan Irmawan Ismail Marzuki Ismail Marzuki Jamilah Jamilah Lismawati, Lismawati Mahmud Mahmud Muh Yusuf Harun, A Muh. Chaerul, Muh. Muhammad Azis Muhammad Azis Muhammad Chaerul Mulyadi Mulyadi Musliani, Musliani Nyiwi, Andri Andi Poppy Indrayani POPPY INDRAYANI, POPPY Rachman, David Sumantri Ritnawati Makbul Rosnaini Daga Satriawan, Andi Muh. Dayri Sry Gusty, Sry Sunusi, Widia Anggraeni Wintari, Ni Kadek Yoom, Lilis Irjayanti Yusuf Harun, A