Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal Jurnal Sains dan Teknologi Reaksi Journal Serambi Engineering (JSE)
Deea Rizki Oziana
Universitas Syiah Kuala
Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
ANALISIS SPASIAL TINGKAT BAHAYA TANAH LONGSOR DI KABUPATEN ACEH TENGGARA MENGGUNAKAN SISTEM INFORMASI GEOGRAFIS Haqul Baramsyah; Keefi Kienan; Deea Rizki Oziana; Pocut Nurul Alam
Jurnal Sains dan Teknologi Reaksi Vol 24, No 01 (2026): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v24i01.9789

Abstract

Kabupaten Aceh Tenggara, located within the Leuser Ecosystem, carries a high risk of hydrometeorological disasters. This study aims to map landslide hazard level zonation using the Ministry of Agriculture, Forestry and Fisheries (MAFF)-Japan through Geographic Information System (GIS) platform. The parameters used include rainfall, land use, slope inclination, soil type, geological type, and landform. Analysis was conducted using overlay and scoring techniques. The results show that Southeast Aceh Regency has three hazard level categories: low (7.19% or 306 km²), moderate (89.78% or 3,806 km²), and high (3.03% or 130 km²). Areas with a high hazard level are dominated by forest areas with steep slopes (15%) and high rainfall (3,500 mm/year). This mapping is expected to serve as a foundation for spatial planning policies and disaster mitigation in the region. Key words: Landslides, MAFF-Japan Method, Aceh Tenggara, Geographic Information System, Mitigation
Production Optimization Analysis Based on Effective Working Hour of Mobile Crusher Unit 02: Case Study in PT Mifa Bersaudara, West Aceh Deea Rizki Oziana; Syafitri Amanda; Nurul Aflah; Pocut Nurul Alam; Nurul Kamal; Ali Hasymi
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/94d3ya05

Abstract

PT Mifa Bersaudara is a coal mining company located in Meureubo, West Aceh, Indonesia. This study evaluates and optimizes the Effective Working Hours (EWH) of Mobile Crusher 02 (MC02), one of the key units in the coal crushing process. The primary constraint identified is the inability to achieve production targets due to excessive downtime, particularly standby time and equipment breakdowns, which significantly reduce operational efficiency. A quantitative descriptive approach was applied using primary field observations and secondary production data from May to June 2025. The analysis focused on downtime components, effective working hours, and equipment availability based on Mechanical Availability (MA), Physical Availability (PA), Utilization of Availability (UA), and Effective Utilization (EU). Results indicate that MC02 operated for an average of only 7 effective working hours out of 10.05 available hours, reflecting an efficiency level of 69.65%. Standby time accounted for the largest portion of downtime at 141.86 hours. Following the implementation of operational improvements aimed at reducing delays, overall efficiency increased, and production rose from 128,505 tons to 168,864 tons, achieving 112% of the targeted output. These findings demonstrate that improving EWH has a direct and significant impact on crusher productivity and provides a foundation for future operational optimization in the coal processing system.
Co-Authors Ali Hasymi Haqul Baramsyah Keefi Kienan Nurul Aflah Nurul Kamal Pocut Nurul Alam Syafitri Amanda