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Syafii
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LPPM Universitas Andalas Gd. Rektorat Lt. 2, Kampus Limau Manis, Padang 25163, West Sumatra, Indonesia
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Andalasian International Journal of Applied Science, Engineering, and Technology
Published by Universitas Andalas
ISSN : -     EISSN : 27970442     DOI : https://doi.org/10.25077/aijaset
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Mechanical Engineering
The Andalasian International Journal of Applied Science, Engineering, and Technology (AIJASET) is an international journal dedicated to the improvement and dissemination of knowledge on applied science, engineering and technologies including energy, environment, industrial, agriculture, civil, transportation, Information and communication and other related sciences and engineering. AIJASET follows new trends and advanced technology for practical applications of appropriate technology.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 209 Documents
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Sidewalk and Pedestrian Crossing Design on Urban Mixed Land Use Area Radjawane, Louise Elizabeth; Singgih, Hanna Mariani; Rampa, Sarliati Allo
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 6 No. 1 (2026): March 2026
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v6i1.266

Abstract

Pedestrian pathways are physical infrastructure that support the smooth movement of people from one place to another. The sidewalk on Sultan Alauddin Street in Kota Makassar is damaged and has been repurposed as a parking space for motorcycles and street vendors. Pedestrians in this area are forced to use the road shoulder to walk, despite the significant safety risks for pedestrians and other road users. The purpose of this study is to determine the characteristics of pedestrians, sidewalk and pedestrian crossing planning. The references used as guidelines are Pedestrian Facility Planning, 2017. Research methods for sidewalks and pedestrian crossings generally involve several stages to measure and analyze the geometric conditions of sidewalks, pedestrian behavior, and the volume of pedestrian movement crossing the road. The sidewalk width meeting the needs of pedestrians in this section is 1.698 meters, and a pelican crossing with a duration of 94 seconds for crossing the road. Findings of the research is the average speed of pedestrian space has a positive effect on the space, but a negative effect on density. As the average speed of pedestrian space increases, the density will decrease and the space will increase.
Educating Renewable Energy Innovation: Bio-Briquette Development from Plantation Waste in South Toapaya, Bintan Island Nabila, Aditia Ayu Rahma; Fatiha, Aidil Mersa; Nusyirwan, Deny; Apriansyah, Firman; Rusdy, Ahmad; Al Rasyid, Muhamad; AS, Zuleriwati; Karim, Abdul Alimul; Dio, Rafi
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 6 No. 1 (2026): March 2026
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v6i1.279

Abstract

The increasing demand for energy and the continued reliance on fossil fuels in Indonesia present serious environmental and economic challenges. This community service project introduces an innovative solution by developing bio-briquettes from cassava peel waste in South Toapaya Village, Bintan Island. The program applies a Participatory Action Research (PAR) approach to engage the community in a hands-on learning experience, from problem identification to production and evaluation. Through interactive socialization and technical training, villagers—especially farmers and housewives—were educated on the benefits of converting plantation waste into renewable energy. The process involved drying, pyrolysis, mixing with natural adhesives, molding, and testing of the resulting briquettes. The produced bio-briquettes demonstrated effective burn duration up to 42 minutes with low smoke output, making them a viable alternative to firewood. This initiative not only reduced organic waste but also empowered the community to create economic value from local resources. While the project achieved its educational and technical goals, limitations included a lack of laboratory validation and small-scale outreach. The results show promising potential for broader implementation in rural energy innovation.
Normalized Difference Vegetation Index Serves as a Vegetation Indicator for Hydrometeorological Disaster Risk Mitigation in Post-Mining Reclamation Land Sari, Dewi Nur Indah; Suhel, Henyningtyas; Wibawanto, Arif Eko
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 6 No. 1 (2026): March 2026
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v6i1.291

Abstract

Mining activities in South Kalimantan have had a significant impact on the environment, particularly related to the risk of hydrometeorological disasters such as floods and landslides. Post-mining land reclamation is a crucial effort in mitigating these risks. Sustainable reclamation is key to risk mitigation and can be monitored through the Normalized Difference Vegetation Index (NDVI) as an indicator of vegetation density and health. High NDVI values indicate successful reclamation. The primary objective of this research is to evaluate the effectiveness of post-mining reclamation as a hydrometeorological disaster mitigation strategy by assessing vegetation density and health. The study utilizes Sentinel-2 Level-2A satellite imagery processed on the Google Earth Engine (GEE) platform to calculate the NDVI. To ensure data reliability, the results were validated through field measurements using the purposive sampling method and canopy cover estimation to achieve a high level of accuracy. The results show an accuracy rate of 90%, with dense vegetation dominating and an index value of 0.6–0.9, indicating that reclamation has successfully increased vegetation cover and plays a significant role in mitigating floods and landslides.
Integrating Artificial Intelligence into Entrepreneurship Education for Engineering Graduates in Nigeria Adelakun, Najeem Olawale; Mande, Samaila
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 6 No. 1 (2026): March 2026
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v6i1.297

Abstract

Artificial Intelligence (AI) is rapidly transforming the world of education, innovation and entrepreneurship; in the field of engineering education, AI has become an accelerator and a mediator - helping eliminate the divide between theory and practice, as well as between academic knowledge and that which is applicable in industry. The study examines the possibility of artificial intelligence integration in order to expand entrepreneurial skill, human capital, and innovation systems within Nigerian tertiary institutions. The study explores the effect of cluster formation, enabling environments, workforce retention, and AI adoption on entrepreneurial performance through a mixed-method approach, where quantitative data reveal that AI-enriched learning environments and the use of AI-enhanced learning environments have a strong positive relationship with entrepreneurial performance, and qualitative information indicates that intelligent systems are enabling factors influencing entrepreneurial performance in terms of creativity, employability, and collaboration. The results of the study show that AI-based entrepreneurship education can increase the application of practical problem-solving, intelligent mentoring, and data-based policy design of sustainable development. The research concludes that implementing AI in engineering programs has the potential to revolutionize Nigeria human capital base by eliminating skills shortages and enhancing the growth of an innovation-driven economy.
Optimizing the Demineralizer Water Control System Centrally in Waste Heat Recovery Power Generation by Applying the PDCA Cycle Budiman, Refki; Ramadhamy, Queen Hesti; Diwa, Muhammad Arya; Imran, Imil Hamda
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 6 No. 1 (2026): March 2026
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v6i1.298

Abstract

The cement production process consumes a significant amount of energy, particularly during the clinker burning stage. This stage generates high-temperature exhaust gases. Waste Heat Recovery Power Generation (WHRPG) technology captures this waste heat from the kiln to generate electricity; however, its efficiency largely depends on the quality of demineralized water. This study focuses on improving demineralized water quality through the implementation of a centralized control system based on the Plan, Do, Check, Action (PDCA) method. In the Plan phase, the root causes identified were delays in performing water regeneration and manual control of the demineralization process. As an alternative solution to these dominant causes, a centralized control system was proposed for the demineralizer area, located in the control room. The results show that the centralized system effectively reduced water conductivity to below 2 µS/cm, in accordance with the required standards. This improvement led to financial benefits of IDR 300,672,000 per year through reduced water replacement and boiler damage. Additionally, it provided non-financial benefits such as simplified operations and reduced maintenance needs. The established standards for input, process, and output contribute to the continuous improvement of WHRPG operational efficiency, thereby supporting more effective energy management in the cement industry.
Remediation of Heavy Metals From Presco Campus Dumpsite Using Nano-Zero Valent Iron Supported Justicia Carnea Leaves Extract Oluchi, Otu Mercy; Sunday, Nworie Felix; Glory, Otu Christian
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 6 No. 1 (2026): March 2026
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v6i1.310

Abstract

This study investigated the green synthesis of nano zero-valent iron supported Justicia carnea leaves extract and its application in remediating heavy metal contaminated dumpsite soil at PRESCO Campus, Ebonyi State University. UV-Vis spectroscopy revealed a strong absorption peak at 276 nm, confirming Fe0 formation, while FTIR analysis identified phytochemical functional groups responsible for reduction and stabilization. The untreated soils contained elevated levels of heavy metals including Cr, Mn, Fe, Co, Ni, Cu, Zn, and Pb. The synthesized nZVI showed appreciable remediation potential, with metal removal efficiencies varying across species and experimental conditions. Fe exhibited the highest uptake, reaching up to 92%, while Mn, Co, Cu, Zn, and Pb showed moderate to high removal. Adsorption was influenced by pH, temperature, contact time, and adsorbent concentration, with optimal removal observed at pH 7 and 39.85 C. Adsorption isotherms were described by both Langmuir and Freundlich models, indicating heterogeneous surface interactions. Kinetic evaluation revealed metal-specific behavior. Mn and partially Pb followed pseudo-second-order kinetics suggesting chemisorption, whereas Cr, Fe, Co, Cu, and Zn followed pseudo-first-order trends reflecting a combination of physisorption and chemisorption mechanisms. Overall, the findings show Justicia carnea mediated nZVI as a sustainable material for remediation of heavy metals in contaminated soils.
Performance Analysis of a 220 V DC Lead-Acid Battery Using the Dummy Load (Torkel 840) Method in The Electrical System of a Steam Power Plant 2x 100 MW Onanda, Witri; Muhardika; Savira, Resti; Abadi, Akbar; Amir, Anisa
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 6 No. 1 (2026): March 2026
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v6i1.317

Abstract

Battery performance can be affected by operational disturbances such as overcharging and deep discharging, which may lead to voltage instability, temperature rise, and accelerated degradation. This study analyzes the effect of discharge current on the voltage and temperature characteristics of a lead-acid battery in a 220 V DC LAA system using a dummy load method. The experimental test was conducted using a Torkel 840 battery discharge tester with a constant discharge current of 25 A for a duration of 10 hours. Parameters including total battery voltage, average cell voltage, battery temperature, and electrolyte specific gravity were measured periodically during the discharge process. The minimum allowable battery voltage was determined based on manufacturer specifications to ensure safe operation. The results indicate that the battery voltage decreased gradually and remained above the minimum allowable limit of 187.2 V, demonstrating stable voltage performance under constant load conditions. Battery temperature increased moderately from 22.36 °C to 25.93 °C and remained within the recommended operating range. The electrolyte specific gravity showed a consistent decrease corresponding to normal electrochemical behaviour. These results confirm that the tested lead-acid battery is suitable for reliable operation as a DC backup power source in power plant applications.
Development of Electrical Laboratory Information System using Model View Controller Architecture Maulana, Zen Resti; Fitrianto, Eka; Rusydi, Muhammad Ilhamdi; Mahmood, Asrul Azani
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 6 No. 1 (2026): March 2026
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v6i1.319

Abstract

Effective and efficient laboratory inventory management is crucial to support academic and research activities in higher education. The manual system currently used to manage eight laboratories in the electrical engineering department often leads to various problems, such as recording errors, asset loss, and inaccuracy in reporting. This is the urgency of establishing an integrated information system to improve the accuracy and efficiency of laboratory inventory management. This research aims to digitize the laboratory inventory through the implementation of an application-based laboratory inventory management information system, namely Silab Elektro. In addition, this system also aims to increase transparency and accountability in laboratory asset management. This information system was developed using UML (Unified Modeling Language) modeling with MVC (Model-View-Controller) architecture. This research produces a laboratory information system that can manage equipment inventory more effectively and efficiently, as well as improve data accuracy.
The Effect of Size Factors on the Mechanical Strength of Meranti Wood Kutana, Agung Nugrawan; Wahyuningtyas, Irma; Salusu, Heriad Daud
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 6 No. 1 (2026): March 2026
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v6i1.330

Abstract

The use of wood as a construction material has been increasing in recent years. However, wood has limitations in terms of availability and size, which can affect the strength capacity of structural materials. Therefore, the efficient use of raw materials must be carefully considered in structural and construction planning. One important parameter related to this efficiency is the size factor of wood samples. The objective of this study was to analyze the effect of different sizes of meranti wood (Shorea spp.) used as structural elements on its mechanical properties, such as flexural properties (stiffness and strength) and compressive strength parallel to the grain. The results showed that both empirical observations and theoretical standards indicate a decrease in MOE values as the size of the test samples increases. Larger samples tend to produce lower MOR, bending strength, and compressive strength values. These findings indicate that the size factor plays an important role in determining the mechanical performance of wood and should be considered in structural design using wood materials.

Page 21 of 21 | Total Record : 209

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