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Aceh International Journal of Science and Technology
Published by Universitas Syiah Kuala
ISSN : 20889860     EISSN : 25032348     DOI : http://10.13170/aijst
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences
Aceh International Journal of Science & Technology (AIJST) is published by the Graduate School of Syiah Kuala University (PPs Unsyiah) and the Indonesian Soil Science Association (Himpunan Ilmu Tanah Indonesia, Komda Aceh). It is devoted to identifying, mapping, understanding, and interpreting new trends and patterns in science & technology development, especially within Asian countries as well as other parts of the world. The journal endeavors to highlight science & technology development from different perspectives. The aim is to promote broader dissemination of the results of scholarly endeavors into a broader subject of knowledge and practices and to establish effective communication among academic and research institutions, policymakers, government agencies, and persons concerned with the complex issue of science & technology development. The Journal is a peer-reviewed journal. The acceptance decision is made based upon an independent review process supported by rigorous processes and provides constructive and prompt evaluations of submitted manuscripts, ensuring that only intellectual and scholarly work of the greatest contribution and highest significance is published. The AIJST publishes original conceptual and research papers, review papers, technical reports, case studies, management reports, book reviews, research notes, and commentaries. It will occasionally come out with special issues devoted to important topics concerning science & technology development issues. Scopes Starting in 2016, AIJST has focused on science and engineering aspects, and therefore now AIJST considers the topics but not limited to : Engineering (Mechanical, Chemical, Civil, Transportation) Geology and Geomorphology Environmental Science (Hydrology, Pollution, Water Treatment, Soil Science, Climatology) Physical Oceanography Mathematics Physics and Geophysics Geospatial and Information Technology
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Global dan Perubahan Planet
Articles 7 Documents
 1 
Search results for , issue "Vol 13, No 3 (2024): December 2024" : 7 Documents clear
Implementation of Deterministic and Multimineral Method in Petrophysical Analysis for Identifying Low Resistivity Reservoir in Tesla Field, Air Benakat Formation, South Sumatera Basin Saroji, Sudarmaji; Trihapsari, Wandia Mellani; Trisna, Muhammad Destrayuda
Aceh International Journal of Science and Technology Vol 13, No 3 (2024): December 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.3.36698

Abstract

The Tesla field is located in the South Sumatra Basin, where there is the Air Benakat Formation, with the constituent rocks being dominated by alternating sandstone and claystone so that it is a shaly sand environment with the potential to become a low-resistivity hydrocarbon reservoir. Hydrocarbon reservoirs generally have a resistivity log value of more than 10 m; when a hydrocarbon reservoir has a low-resistivity value between 0.5 - 5 m, it is referred to as a low-resistivity hydrocarbon reservoir. Initially, deterministic analysis was carried out to calculate the petrophysical parameters of the potentially low-resistivity reservoirs. However, the results show a low validation value of petrophysics parameters, such as effective porosity and water saturation, when compared to the DST data, so a multimineral analysis is carried out to increase the validation value of the petrophysical parameters. The use of the multimineral method has produced the petrophysics parameter closer to DST Data when compared to the petrophysics parameter produced by the deterministic method in Tesla Field. The formation analysis shows that the low resistivity reservoir in the Tesla Field is caused by the grain size of the sandstone, which is very fine so that it can bind water significantly (irreducible water), abundant shale content, and distributed by lamination of shale, dispersed shale, and structural shale as well as the presence of conductive glauconite minerals.
Optimizing Mechanical Properties of Al6063 Aluminum Alloy through Silicon Weight Percent Variation and Heat Treatment at the Propeller Shaft Materials Casting Joni, .; Bhiftime, Eka Irianto
Aceh International Journal of Science and Technology Vol 13, No 3 (2024): December 2024
Publisher : Graduate School of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.3.37662

Abstract

Ship propulsion relies significantly on the efficiency of its components, with the shaft propeller playing a pivotal role in navigating vessels through water. Traditionally constructed from steel, this study explores an unconventional approach by employing an Aluminum Alloy base material, specifically the 6063 alloy, for the propeller shaft model. The material's mechanical properties become a crucial focus, prompting a detailed investigation into the impact of silicon and magnesium elements through a meticulous heat treatment process. The experimental procedure involves heating the Al6063 alloy to 790C, transitioning to a complete liquid state, and subsequently incorporating silicon and magnesium at specific temperatures. The stirring process, executed with a mechanical stirrer, sets the stage for the alloy's casting into a mold under pressure. Post-casting, the propeller shaft undergoes a comprehensive heat treatment regimen, including solution treatment, quenching, and artificial aging. The study's findings showcase a remarkable reduction in porosity with increasing silicon elements, reaching its lowest point at 4% wt Silicon. Tensile tests demonstrate a direct correlation between silicon addition and increased stress values, with the highest stress observed at 4% wt Silicon. Concurrently, hardness values ascend proportionally with silicon inclusion, peaking at 4% wt Silicon. The thorough analysis presented here highlights the effectiveness of silicon elements in enhancing the mechanical characteristics of the shaft propeller made of aluminum alloy, which bodes well for future developments in ship propulsion technology.
Marine Debris of Northern Aceh Waters During First Monsoon Transition Period Agustina, Sri; Karina, Sofyatuddin; Purnawan, Syahrul; Ondara, Koko
Aceh International Journal of Science and Technology Vol 13, No 3 (2024): December 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.3.34234

Abstract

Pollution in the ocean caused by anthropogenic activities has been a global issue. However, data on marine debris in Aceh Waters is limited. This study was conducted to identify the category, density, and source of marine debris on the Weh Island and Aceh Island beaches during the first monsoon transition period. Samples were collected in April 2022 at four stations, namely Laweung Beach in Sumatra Island (station 1), Aron Beach in Weh Island (Station 2), Nipah Beach and Alue Riyeung Beach in Aceh Island (Station 3 and Station 4, respectively). Samples collected in a 100 m-length transect were classified into nine categories: plastic, foamed plastic, cloth, glass and ceramic, metal, paper and cupboard, rubber, wood, and others. The result depicted that the highest density was plastic (0.602-1.022 items/m2), followed by foamed plastic (0.038 to 0.654 items/m2) and rubber (0.020 to 0.089 items/m2). Turning to its appliances, plastic was mostly used as packaging, such as bottles and cups for drinking water, while foamed plastic and rubber were used for cooling boxes and footwear. As the sea current shifted during the monsoon transition period, trash from ships passing the marine routes around the Aceh Waters is assumed to be transporting debris from various countries, such as Malaysia, Thailand, and China.
Phosphate Removal from Aqueous Solutions using Activated Carbon Derived from Nypa fruticans Amelia, Marysha; Abdullah, Faisal; Muslim, Abrar; Meilina, Hesti; Saiful, Saiful
Aceh International Journal of Science and Technology Vol 13, No 3 (2024): December 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.2.42587

Abstract

Nypa fruticans (NF) waste which includes the empty fruit bunches and shells (NFW), frond (NFF) and leaflets (NFL) composes primarily of hemicellulose, cellulose and lignin, shows great potential as a raw material for activated carbon (AC). This study investigated the removal of phosphate from aqueous solutions using activated carbon derived from Nypa fruticans. The NFW, NFF and NFL was pyrolyzed and physically activated in a tube furnace. FTIR analysis revealed that the NFW-AC, NFF-AC and NFL-AC exhibited functional groups such as chemical functional group O-H, C-O-C, C-O, C=O, C-O and C-H stretching in hemicellulose, cellulose and lignin, which were associated with phosphate (PO4) adsorption. Among these, the NFW-AC showed the lowest transmittance and higher pore density. Adsorption experiments indicated a rapid initial adsorption within the first 5 min, followed by minimal changes until equilibrium was reached at 30 min. The NFW-AC showed the best performance with the highest efficiency (40.05%) and capacity (85.85 mg/g). Adsorption kinetics for all activated carbon were better described by the pseudo-second-order model, with highest capacities of 60.606 mg/g and adsorption rates of 0.0235 g/mgmin attributed to NFW-AC. The adsorption isotherms followed the Langmuir mode, yielding capacities of 60.606 mg/g, 31.546 mg/g and 8.1967 mg/g for the NFW-AC, NFF-AC, and NFL-AC, respectively. These findings demonstrated the potential of Nypa fruticans-based activated carbon for phosphate adsorption
Development of Silica-based Materials from Natural Sources as A Green Catalyst for Biofuel Production Nugraha, Reva Edra; Aziz, Abdul; Sunarti, A.R Yelvia; Nurherdiana, Silvana Dwi; Mumtazah, Zuhriah; Sholeha, Novia Amalia; Nurmawati, Ardika; Islamiyah, Syuaibatul; Nandini, Atika; Saputro, Erwan Adi
Aceh International Journal of Science and Technology Vol 13, No 3 (2024): December 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.3.40369

Abstract

Mesoporous silica is a versatile material characterized by its highly ordered nanoporous structure with pore diameters ranging from 2 to 50 nanometers. This unique structure provides a large surface area and volume, making mesoporous silica an excellent candidate for various applications in adsorption, drug delivery, catalysis, and environmental remediation. Mesoporous silica can be synthesized using commercial or natural silica precursors such as mineral clay and other natural sources. Promising alternative sources of silica for synthesizing mesoporous materials encompass a range of materials, including various clay minerals such as kaolin, rectorite, halloysite, montmorillonite, sepiolite, hectorite, bentonite, talc, muscovite, paragonite, palygorskite, and chlorite. Other natural sources like beach sand, geothermal sludge, and sepiolite also show significant potential for mesoporous material synthesis. However, these sources have not been extensively explored and warrant further investigation in the field. The mesoporous silica from natural sources has been widely used as a catalyst for biofuel production via hydrocracking, catalytic cracking, and deoxygenation reactions
The potential of switching modes of transportation analysis in a middle city region with Binary Logistic Regression Method Basalim, Said; Akhmadali, .
Aceh International Journal of Science and Technology Vol 13, No 3 (2024): December 2024
Publisher : Graduate School of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.3.39523

Abstract

This study aimed to investigate the various factors that affect the selection of public transport in Pontianak City, West Kalimantan, including gender, age, job nature, transport ownership, travel purpose, vehicle used, and vehicle preference among the respondents. The primary data for this study was gathered through household interviews conducted in 6 sub-districts of Pontianak City. Following the process of data reduction, a total of 654 respondents' answers were available for analysis. This study employs the binomial logistic regression method to establish the connection between independent variables and binary responses, utilizing the JASP software. Comparative analysis is commonly employed in the early stages of data examination to assess the relationship between a variable and vehicle preference. The cross-tab analysis reveals a noteworthy correlation between transportation preferences and factors such as gender and age. After conducting an analysis using the binary logistic regression model method, it was found that factors such as household size, transport ownership, age, and personal status had a significant impact (p0.05). The highest odds ratio value (1.538) is associated with household size, indicating that an increase of 1 unit in household size will positively influence the likelihood of selecting a public transport mode by 1.538 times.
Modeling and Analysis of Column Formwork Construction Components Using Dynamo Revit (Study Case : Project Construction of Building 2 Hermina Hospital Pandanaran) Arifin, Muhammad Faizal Ardhiansyah; Oktaviani, Dianita Putri; Budiwirawan, Agung -; Ilingono, Luke Timor
Aceh International Journal of Science and Technology Vol 13, No 3 (2024): December 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.3.42925

Abstract

The construction industry in Indonesia continues to experience rapid growth. However, there are still challenges in implementing Building Information Modeling (BIM) technology, particularly in the volume calculation of formwork activity. BIM for formwork activity is generally utilized to calculate the surface area of formwork. Moreover, cast-in-place concrete formwork has many components with different utilities; thus, it is difficult to manage. Therefore, this study endeavors to expand BIM by employing BIM to automate the calculation of the formwork components. This research aims to utilize Autodesk Revit and Dynamo software to accelerate calculation time and enhance the accuracy of calculating the components of column formwork. The developed model is applied in the Hermina Pandanaran Hospital Building 2 Project as reliability validation of the model. The column formwork construction is modeled using Revit in 3D format, which is subsequently analyzed using the Dynamo script to automatically obtain the complete components of the column formwork activity, including the amount of each component. A comparison of manual calculations between those performed using Dynamo shows a 0% difference percentage, demonstrating the accuracy of Dynamo calculation. Based on the result, the utilization of Revit and Dynamo has proven to increase efficiency in formwork management. The findings of this research can provide insights into construction practitioners to leverage BIM technology in enhancing the efficiency and accuracy of column formwork components' volume calculations.

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