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Erifive Pranatal
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Journal of Applied Sciences, Management and Engineering Technology (JASMET)
Published by Institut Teknologi Adhi Tama Surabaya
ISSN : -     EISSN : 27212165     DOI : https://doi.org/10.31284/j.jasmet.2020.v1i1.704
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Journal of Applied Sciences, Management and Engineering Technology (JASMET) is an international peer-reviewed journal that was launched by LPPM ITATS. It is dedicated to provide a high-level platform in all aspect of science, management and engineering technology Scope of the journal: Engineering, Science and Management
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 2 Documents
 1 
Search results for , issue "Vol 7, No 1 (2026)" : 2 Documents clear
Formulation of an Eruption Mitigation Plan for Mount Merapi Based on Settlement Land Suitability in Umbulharjo, Yogyakarta Putri, F.J.R.; Yulfiah, Yulfiah
Journal of Applied Sciences, Management and Engineering Technology Vol 7, No 1 (2026)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2026.v7i1.8595

Abstract

Umbulharjo sub-district, Kapanewon Cangkringan has experienced an increase in population every year, thereby intensifying the demand for residential land. The area of Umbulharjo sub-district is located within the Mount Merapi Disaster-Prone Area (DPA). Land suitability is an important instrument in mitigation efforts, as it provides an overview of the physical characteristics of the area that influence the level of disaster risk. This study aims to formulate an eruption mitigation plan for Mount Merapi from technical and social perspectives. Residential land suitability analysis was conducted using a quantitative method, namely an overlay technique employing ArcGIS software. The results show that 78.24% of the land is marginally suitable, 21.04% is unsuitable, and less than 1% is suitable for residential use. Relocation emerges as one of the main mitigation strategies to eliminate risk, especially for communities living within disaster-prone zones. However, relocation presents its own implementation challenges, as residents in the study area are unwilling to be relocated, despite the existence of local government policies regulating relocation. Therefore, in addition to focusing on spatial planning, the mitigation plan is also formulated from technical and social aspects, such as enhancing building resilience to earthquakes and volcanic ash, planning evacuation routes, and providing community education, particularly regarding disaster preparedness.
Analysis of Tawangsari River Water Quality Using the Pollution Index Method in Sidoarjo Regency, Indonesia, during the 2024 Observation Period Alala, Pratama Sandi; Syah, Cahya Bagus; Poesoko, Ayu Setyaning Sayekti
Journal of Applied Sciences, Management and Engineering Technology Vol 7, No 1 (2026)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2026.v7i1.8645

Abstract

River water quality analysis is a fundamental component of environmental management, particularly for rivers with the potential to serve as raw water sources. The Tawangsari River is influenced by domestic activities and surrounding land use, which may contribute to gradual water quality degradation. This study aims to assess the water quality status of the Tawangsari River using the Pollution Index (PI) method. Water samples were collected at three monitoring points representing upstream, middle, and downstream river segments. Key water quality parameters analyzed included pH, turbidity, Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Dissolved Oxygen (DO), Biological Oxygen Demand (BOD), and Chemical Oxygen Demand (COD). The results indicate that the Pollution Index values classify the Tawangsari River as lightly polluted to moderately polluted, with the highest PI value observed at the middle segment of the river. Among the evaluated parameters, dissolved oxygen was identified as the dominant factor influencing the Pollution Index values. It should be noted that the assessment was conducted using a limited number of monitoring points within a single observation period. Despite these limitations, the findings provide a reliable overview of the current water quality status of the Tawangsari River and demonstrate the applicability of the Pollution Index method as a practical tool for river water quality assessment and management planning. Keywords: pollution index; river water quality; dissolved oxygen; environmental monitoring; water quality status

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