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Journal Majelis Paspama
Published by Paspama Institute
ISSN : -     EISSN : 29871379     DOI : https://doi.org/10.58471
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Journal Majelis Paspama The following journals that receive a multidisciplinary research focus with a Scope of Engineering accept submissions of scientific articles for research in the form of research results, surveys, and literature in the fields of engineering, including: Informatics Engineering, Electrical engineering, Civil engineering, Architecture, Chemical engineering, Industrial engineering, Mechanical engineerin
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 37 Documents
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Adoption and Impact of Green Manufacturing Practices on Sustainable Industrial Development in Anambra State, Nigeria Charles Onyeka Nwamekwe; Igbokwe Nkemakonam Chidiebube; Ono Chukwuma Godfrey; Nwabunwanne Emeka Celestine; Aguh Patrick Sunday
Journal Majelis Paspama Vol. 3 No. 02 (2025): Journal Majelis Paspama, 2025
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Abstract

This study examines the adoption and impact of green manufacturing practices on sustainable industrial development in Anambra State, Nigeria. Focusing on major industrial hubs such as Nnewi, Onitsha, and Awka, the research explores how local industries integrate sustainable production strategies, including renewable energy use, lean production, waste reduction, and eco-friendly material adoption, within a context of environmental, economic, and social challenges. Findings reveal that while large firms have made notable progress, installing solar systems, improving process efficiency, and complying with export-driven eco-standards, small and medium-sized enterprises (SMEs) face significant barriers, including high capital costs, limited technical expertise, outdated machinery, and weak policy enforcement. Despite these challenges, the study demonstrates that green practices yield substantial benefits: reducing greenhouse gas emissions and material waste by up to 15–20%, lowering energy costs, enabling access to green product markets, and fostering new employment opportunities in waste management, renewable energy, and environmental consulting. The paper underscores the pivotal role of industrial engineers in driving eco-efficiency through lean-green integration and digital tools, while highlighting the need for robust policy frameworks, financial incentives, and capacity-building initiatives. Ultimately, the research positions Anambra State as a potential model for sustainable industrial growth in Nigeria, aligning with the United Nations Sustainable Development Goals (SDGs) and national climate commitments under the Paris Agreement.
Utilization of Palm Kernel Ash and Shell as Sustainable Binders and Aggregates for Structural Block Production Clement Nworji Obiora; Oladapo Babafemi Fakiyesi; Chukwunakueze Arinze Nwekeoti
Journal Majelis Paspama Vol. 3 No. 02 (2025): Journal Majelis Paspama, 2025
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In order to develop a block for structural purposes, this study investigates the use of Palm Kernel (PK) ash and sodium silicate as a binder to produce a six-inch block. The disposal of PK ash and shell, which are agricultural waste products from palm oil mills, is a hazard for the environment. The PK ash possesses pozzolanic qualities that make it possible to partially substitute cement and also play a significant role in the strength and durability of concrete. By using PK ash in concrete, the growing issues of cement scarcity and high cost will be lessened. Three different varieties of PK ash were created at various temperatures (350-7500 C) and used to replace up to 50% PC in order to explore the PK ash's ability to replace PC. In order to research the aggregate replacement potential of the PK shell, up to 100% of the coarse aggregate was replaced.
Performance of K-Means Algorithm for Ground Acceleration Clustering Siska Simamora; Amran Manalu; Paska Marto Hasugian
Journal Majelis Paspama Vol. 2 No. 2 (2024): Journal Majelis Paspama, July 2024
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Abstract

Indonesia is one of the most seismically active regions in the world due to the convergence of the Indo-Australian, Eurasian, and Pacific tectonic plates. This condition exposes the country to frequent earthquakes with varying magnitudes and intensities that may cause severe structural damage and pose risks to human safety. Ground acceleration, particularly Peak Ground Acceleration (PGA), is a key parameter for evaluating earthquake impacts and is strongly influenced by geological conditions, hypocentral depth, and epicentral distance. However, the complexity and large volume of ground acceleration data often hinder manual interpretation. This study applies the K-Means clustering algorithm to classify ground acceleration data obtained from seismic records at several observation points. Prior to clustering, data preprocessing was performed through data cleaning and min–max normalization to ensure quality and comparability across variables. The optimal number of clusters was determined using the Elbow method and Silhouette Score. The results reveal distinct distribution patterns of ground acceleration, which are closely related to local seismic conditions. These findings are expected to contribute to the development of preliminary ground acceleration zonation, providing valuable insights for earthquake hazard mapping and risk mitigation efforts in Indonesia.
Life-Cycle Cost Analysis of a 220Ah Tubular Battery in a Solar-Powered Academic Setting Obiora Jeremiah Obiafudo; Godspower Onyekachukwu Ekwueme; Ugochukwu Richards Orji; Clement Nworji Obiora
Journal Majelis Paspama Vol. 3 No. 02 (2025): Journal Majelis Paspama, 2025
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Reliable energy storage remains a critical challenge in sustaining solar-powered systems within academic environments, particularly in Nigeria where erratic grid supply hinders teaching and research activities. Batteries constitute the most cost-intensive component of solar installations, and their economic performance determines long-term viability. The study integrated MATLAB/Simulink simulations, field observations, and expert input. The analysis followed three stages: system modeling, performance evaluation, and economic benchmarking. Monocrystalline PV modules (220–330 W, 18–20% efficiency) were configured with 7° tilt and passive cooling to optimize performance in Nigeria’s tropical climate. A 60A MPPT controller and 1 kW inverter enhanced efficiency, while protections improved system reliability. Life-cycle cost analysis (LCCA) over 15 years at 10% discount rate compared tubular lead-acid and LiFePO₄ batteries, revealing LiFePO₄’s long-term cost advantage. Sensitivity analysis and benchmarking confirmed its superior cycle life, reduced maintenance, and lower levelized storage costs. The life-cycle cost analysis showed that tubular lead-acid batteries were cheaper upfront (₦92,000/kWh vs. ₦230,000/kWh) but incurred higher O\&M (₦46,000/kWh every 5 years) and required replacements at years 5 and 10, raising their 15-year cost to ₦400,200/kWh. LiFePO₄, though costlier (₦481,100/kWh total), offered longer lifespan, lower O\&M (₦18,400/kWh), and higher salvage value (₦34,500). Net Present Cost was lower for tubular (₦248,500/kWh vs. ₦289,200/kWh), yet LiFePO₄ delivered a better Levelized Cost of Storage (₦98/kWh vs. ₦127/kWh) and achieved payback in 8.2 years. Thus, tubular favored affordability, while LiFePO₄ provided superior long-term value and reliability for Nigerian universities. The study recommends a shift toward durable storage technologies to enhance reliability, reduce operating costs, and strengthen energy security in Nigerian universities.
Management of Tool Wear Mechanisms in Machining Aluminium Alloy A356/Cow Horn Particle Composite Sunday Chimezie Anyaora; Chidozie Chukwuemeka Nwobi-Okoye; Francis Chukwunonso Okeke; Onyeka Noel Anyali; Ikenna Theophilus Odoh
Journal Majelis Paspama Vol. 3 No. 02 (2025): Journal Majelis Paspama, 2025
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This work presents the modelling and optimization of the cutting parameters in machining operations of aluminium alloy A356/cow horn particles (CHp) composite. In order to enable manufacturers to maximize their gains from utilizing hard turning, an accurate model of the process must be constructed. In course of the work, an attempt was made to develop mathematical models for relating the Tool Wear Ratio (TWR) to machining parameters (feed rate, depth of cut and cutting speed). To achieve this, A356/cow horn particles (CHp) composite was used to investigate the tool wear using RSM with 19 runs. A design of experiment was generated using the Optimal custom design techniques in Response Surface Methodology (RSM) from the Design Expert Software 11.0. After the optimization, the results from the ANOVA tables of the tool wear, surface roughness and Material removal rate showed that some models were significant with the probability value (P-value) 0.0203, 0.0412. Tool wear ranged from 0.00011–0.00092 mg/mm, with the lowest at high feed rate (0.25 rev/mm), high cutting speed (900 RPM), and depth (1.5 mm). Feed rate (p = 0.0436), cutting speed (p = 0.0008), and depth of cut (p = 0.0137) significantly influenced tool wear. The regression model achieved strong fit (R² = 0.9952, Adj R² = 0.9714) with low error (Std. Dev. = 0.0001). Predicted versus actual plots confirmed reliability, with 95% CI (0.000196–0.000530 mg/mm) validating precision and stability. In order to enable manufacturers to maximize their gains from utilizing hard turning, an accurate model of the process have been constructed.
Design and Development of a Website-Based Library Information System at Valentine High School Lianjus Obrai Sitio
Journal Majelis Paspama Vol. 3 No. 01 (2025): Journal Majelis Paspama, January 2025
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Advances in information technology provide great opportunities to improve the effectiveness of data management in various fields, including school libraries. This study aims to design and develop a website-based library information system at Valentine High School as a solution to the manual system that has been used so far. Data collection methods were carried out through observation, interviews, and documentation to obtain relevant information related to system requirements. The developed system includes features such as login, user data management, book data, categories, shelves, borrowing, returns, fines, and membership card printing. The system implementation uses software such as Adobe Dreamweaver CS5 and XAMPP, with minimal hardware support of a Dual Core computer and 4 GB of RAM. The results of the study show that a website-based library information system can speed up the service process, improve data accuracy, facilitate information storage and presentation, and reduce errors that often occur in manual systems. Thus, this system can be an effective solution in improving the quality of library services at Valentine High School.
Designing a Microcontroller-Based Attendance System for Lecturers and Employees Using Rifd and MYSQL Database at AMIK Medicom Febrian Sihombing; Veriandus lumbanbatu; Alditia preangin angin
Journal Majelis Paspama Vol. 3 No. 01 (2025): Journal Majelis Paspama, January 2025
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An effective and efficient attendance system is an important requirement for educational institutions and organizations. Manual attendance systems that are still in use often cause various problems, such as recording errors, data loss, and time-consuming processes. This study aims to design and develop a microcontroller-based attendance system for lecturers and employees using RFID technology integrated with a MySQL database at AMIK Medicom. The research methodology uses a waterfall approach that includes analysis, design, implementation, and testing stages. The hardware used includes an ESP32 microcontroller, RFID sensor, buzzer, and RFID identity card, while the software consists of Arduino IDE, XAMPP, and MySQL database. The implementation results show that the attendance system is capable of detecting RFID cards properly, automatically recording attendance in the database, and providing real-time notifications through the Telegram application. This system has been proven to improve the efficiency, accuracy, and security of the attendance process compared to manual methods.
Ergonomics-Aware Scheduling: Biomechanical Models with Production Planning Integration for Musculoskeletal Risk Reduction Chukwumuanya Emmanuel Okechukwu; Okpala Charles Chikwendu; Onukwuli Somto Kenneth
Journal Majelis Paspama Vol. 3 No. 01 (2025): Journal Majelis Paspama, January 2025
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Work-related Musculoskeletal Disorders (MSDs) remain a significant challenge in industrial environments, as they contribute to lost productivity, high compensation costs, and reduced workforce well-being. Traditional production scheduling practices often prioritize throughput and efficiency, overlooking ergonomic considerations. This study proposes an ergonomics-aware scheduling framework that integrates biomechanical modeling with production planning to reduce MSD risks while sustaining operational performance. Using case studies in an assembly line, a machining workshop, and a packaging section, the framework applied biomechanical risk models to inform scheduling algorithms. The results showed substantial reductions in both peak and cumulative physical loads which are 23% and 19% in assembly, 28% and 21% in machining, and 31% and 26% in packaging, while maintaining productivity with minimal trade-offs. Qualitative benefits included improved inclusivity, greater adaptability to demand fluctuations, and enhanced worker-task matching. The discussion highlights the implications for industry, and emphasize how ergonomics-aware scheduling supports sustainable productivity, lowers injury risks, and also aligns with Industry 4.0 through real-time monitoring and digital twins. The limitations include simplified biomechanical models, limited case study scope, and data requirements. Future research should explore machine learning integration, broader validation across sectors, and longitudinal studies on long-term organizational outcomes. Overall, ergonomics-aware scheduling provides a promising pathway towards the designing of production systems that are not only efficient, but also safe, inclusive, and sustainable.
Sustainable Formulation of Phenol-Based Disinfectants for Industrial and Domestic Use Iheanocho prosper; Johnson, Nnadikwe; Chinemerem Joy Johnson
Journal Majelis Paspama Vol. 3 No. 02 (2025): Journal Majelis Paspama, 2025
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The formulation of effective and sustainable disinfectants is crucial for preventing the transmission of diseases and ensuring public health. This study focuses on the development of a phenol-based disinfectant formulation, with a specific emphasis on sustainability and efficacy. The formulation process involved mixing texapon, pine oil, phenol, chloroxylenol, isopropyl alcohol, and water in specific proportions, while varying the quantities of chloroxylenol (250g, 500g, 1000g, 1500g, and 2000g) and maintaining the quantities of water and isopropyl alcohol constant. The physical properties of the finished product, including pH, relative density, odour, and dispersion in water, were evaluated through comprehensive physical analysis. The study's findings provide valuable insights into the development of effective and sustainable disinfectant formulations, with potential applications in industrial, domestic, and healthcare settings. The research aims to contribute to the advancement of disinfectant technology, promoting public health and safety through the creation of efficacious and environmentally friendly disinfectant products.
The Integration of TPM in SS-DMAIC Framework to Reduce Production Losses and Enhance Process Performance: a Case Study Chukwuebuka Martinjoe U-Dominic; Ifeyinwa Juliet Orji; Uchendu Onwusoronye Onwurah; Nwufo Maduka Augustine
Journal Majelis Paspama Vol. 3 No. 01 (2025): Journal Majelis Paspama, January 2025
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The primary cause of production system losses is widely recognised to be unplanned stoppages and breakdowns, as idle machines waste time and lower output and throughput. Many firms have undergone a paradigm shift from traditional methods to more sophisticated process improvement strategies to address the dynamic and ever-changing production constraints. To lower production downtimes and other process-related issues, an integrated improvement approach of TPM-SS-DMAIC was used in this study. The new suggested approach was validated in the cable manufacturing industry. The goals of the study were achieved in terms of increased worker knowledge, better quality, and fewer unplanned stoppages and breakdowns. Standard operating procedures were updated in response to suggestions for ways to reduce needless stoppages in extrusion line operations. Furthermore, following the process change, the overall equipment effectiveness (OEE) increased from 58% to 63%, indicating a noteworthy level of improvement.

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