Amir Abdullah Muhamad Damanhuri
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View article: Recent advances in multi-criteria decision-making approaches for circular supply chains: A comprehensive review
Recent advances in multi-criteria decision-making approaches for circular supply chains: A comprehensive review Open
This review article explores the pivotal role of multi-criteria decision making (MCDM) in optimizing circular supply chains (CSC). MCDM methodologies are vital for navigating the complex decision-making scenarios inherent in CSC, where mul…
View article: Evaluation Thermal Comfort based on PMV and PPD using CBE Tool for Three Non-Air-Conditioned Pre School: A Case Study in Melaka Tengah, Malaysia District Area
Evaluation Thermal Comfort based on PMV and PPD using CBE Tool for Three Non-Air-Conditioned Pre School: A Case Study in Melaka Tengah, Malaysia District Area Open
Thermal comfort plays an important role in educational environments, which has a profound effect on the physical and mental health of children. The objective of this study is to assess the thermal comfort levels, specifically the Predicted…
View article: Sustainable solutions for household waste management: Transforming UCO into soap in local communities
Sustainable solutions for household waste management: Transforming UCO into soap in local communities Open
The improper disposal of Used Cooking Oil (UCO) poses significant environmental challenges, contributing to water contamination, clogged sewage systems, and soil degradation. In Kuala Muda, Kedah, a community heavily involved in culinary a…
View article: Interphase investigation of modified McLachlan model and the 3D finite element method for electrical conductivity
Interphase investigation of modified McLachlan model and the 3D finite element method for electrical conductivity Open
This paper explores the electrical conductivity interphase of Ag/Epoxy composite using modified McLachlan theory and 3D finite element composite model through experimental verification. The model characteristic presents conductivity as a d…
View article: Reducing aerosol formation from SLS PA12 powder using response surface methodology via optimization of refresh rate and powder handling activities
Reducing aerosol formation from SLS PA12 powder using response surface methodology via optimization of refresh rate and powder handling activities Open
A critical issue with Selective laser sintering (SLS) is the release of airborne particulates during powder handling, which pose health risks and environmental concerns. Three factors (input variables) were optimized to minimize the follow…
View article: Evaluation of Sick Building Syndrome (SBS) Symptoms and Measurement of Indoor Air Quality (IAQ) Parameter in One of Hospital Building in Johor
Evaluation of Sick Building Syndrome (SBS) Symptoms and Measurement of Indoor Air Quality (IAQ) Parameter in One of Hospital Building in Johor Open
This study assesses Sick Building Syndrome (SBS) symptoms and Indoor Air Quality (IAQ) parameters among hospital ward staff. Utilizing a thorough methodology, a questionnaire survey and IAQ monitoring were conducted, aligning with Departme…
View article: Comprehensive Review on the Relationship between Duct Cleanliness and Airborne Contaminants
Comprehensive Review on the Relationship between Duct Cleanliness and Airborne Contaminants Open
This study investigates the relationship between Indoor Air Quality (IAQ) and air duct cleanliness, addressing the rising concern for human well-being. Airborne contaminants like dust, mold, and bacteria are identified as significant threa…
View article: Development of insulation material using bamboo fibers for thermal and sound properties
Development of insulation material using bamboo fibers for thermal and sound properties Open
Currently, fiberglass is used as an insulation material, and this synthetic fiber is categorised as non-biodegradable and causes air pollution. This study compared the thermal and acoustical properties of Betong bamboo (Dendrocalamus Asper…
View article: Preliminary Study on Student’s Performance and Thermal Comfort in Classroom
Preliminary Study on Student’s Performance and Thermal Comfort in Classroom Open
In Malaysia, students spend up to 33% of their day in classrooms and school buildings. Previous research had shown that thermal comfort conditions in educational buildings can stimulate student productivity. This study aimed to preliminary…
View article: Influence of Air Velocity on Thermal Comfort and Performance of Students in Naturally Ventilated Classrooms in Tropical Climate
Influence of Air Velocity on Thermal Comfort and Performance of Students in Naturally Ventilated Classrooms in Tropical Climate Open
Air velocity is among the most important factors influencing thermal comfort in naturally ventilated spaces in hot and humid tropical climates. It is important to have air velocity that suits comfort needs and enhances the student's learni…
View article: Airflow Distribution of Hall and Classroom as Temporary Evacuation Centers: A Case Study in Melaka
Airflow Distribution of Hall and Classroom as Temporary Evacuation Centers: A Case Study in Melaka Open
During floods, the Malaysian Department of Welfare (JKM) oversees the opening and assigning of victims to evacuation centres. Public buildings such as school classrooms and community halls act as Temporary Evacuation Centers (TEC) that can…
View article: Analysis of Preferential Flow at the Front Mesh Cartridge of the Gas Mask Filter: Cases in Malaysia Climate Environment
Analysis of Preferential Flow at the Front Mesh Cartridge of the Gas Mask Filter: Cases in Malaysia Climate Environment Open
A gas mask respirator is essential for human protection from the hazardous and toxic chemical environment. The gas mask filter should be regularly checked, and the filter must be changed abruptly based on the temporal exposure to the toxic…
View article: Effect of Pore Size and Hydrophobic Coating on Oil-Water Separation System for Grease Trap
Effect of Pore Size and Hydrophobic Coating on Oil-Water Separation System for Grease Trap Open
Public concern towards solidification of fat, oil, and grease (FOG) through disposed wastes into the drainage system is an unresolved issue to this day. The use of skimmer to separate oil and water form their mixture is a less comprehensiv…
View article: Pilot Study on Investigation of Thermal Sensation Votes (TSV) and Students' Performance in Naturally Ventilated Classroom
Pilot Study on Investigation of Thermal Sensation Votes (TSV) and Students' Performance in Naturally Ventilated Classroom Open
Thermal comfort is essential for students' wellbeing, health, and performance.A conducive classroom must consider the acceptable range of heat and its impact on student performance.The study aims to conduct a pilot test for the determinati…
View article: Solar analysis using building information modeling (BIM) Block A UTHM Campus Pagoh - Case study
Solar analysis using building information modeling (BIM) Block A UTHM Campus Pagoh - Case study Open
In the context of solar radiation analysis, the solar study provides results to assist in tracking solar energy throughout the building's design. In this analysis, Building Information Modeling (BIM) is used to evaluate appropriate locatio…
View article: The Effects of Virgin and Recycled PA12 Powders in SLS Processes on Occupational Exposures
The Effects of Virgin and Recycled PA12 Powders in SLS Processes on Occupational Exposures Open
Particulate matter and ultrafine particles are emitted during the pre-processing and post-processing activities of selective laser sintering (SLS) processes, which is major concern to operators exposed to the powders. This study aims to de…
View article: Conceptual Design and Structure Analysis of Giromill Vertical Axis Wind Turbine under Low Wind Speed
Conceptual Design and Structure Analysis of Giromill Vertical Axis Wind Turbine under Low Wind Speed Open
Unstable wind speed in Malaysia has been a problem for the wind turbine.Vertical axis wind turbine (VAWT) that is placed on the ground causes unnecessary stress and hinder it to perform at maximum performance.Thus, the purpose of this stud…
View article: DEVELOPMENT OF RIVER TRASH COLLECTOR SYSTEM
DEVELOPMENT OF RIVER TRASH COLLECTOR SYSTEM Open
Protecting environment from various sources of pollution is imperative to ensure the sustainability of the earth. Water pollution has also become one of the significant issues due to increasing water-related activities such as transportati…
View article: MECHANICAL PROPERTIES OF RICE HUSK ASH (RHA) BRICK AS PARTIAL REPLACEMENT OF CLAY
MECHANICAL PROPERTIES OF RICE HUSK ASH (RHA) BRICK AS PARTIAL REPLACEMENT OF CLAY Open
Clay has been used as main material in fabrication of bricks however the use of waste materials in brick manufacturing has been introduced for conservation of dwindling clay resources, as well as preventing environmental and ecological dam…
View article: DESIGN OF BLOOMED FLOWER PATTERNED SOLAR COLLECTOR
DESIGN OF BLOOMED FLOWER PATTERNED SOLAR COLLECTOR Open
A River Trash Collector System (RTCS) which powered by several DC batteries has been designed. This system is run to control waste and trash pollution at several areas along Malacca River. The objective of this work were to design an aesth…
View article: Comparative study of selected indoor concentration from selective laser sintering process using virgin and recycled polyamide nylon (PA12)
Comparative study of selected indoor concentration from selective laser sintering process using virgin and recycled polyamide nylon (PA12) Open
Additive manufacturing (AM) stands out as one of the promising technologies that have huge potential towards manufacturing industry. The study on additive manufacturing impact on the environment and occupational exposure are attracting gro…
View article: Indoor Air Concentration from Selective Laser Sintering 3D Printer using Virgin Polyamide Nylon (PA12) Powder: A Pilot Study
Indoor Air Concentration from Selective Laser Sintering 3D Printer using Virgin Polyamide Nylon (PA12) Powder: A Pilot Study Open
Environmental emissions from additive manufacturing (AM) have attracted much attention recently. The capability in fabricating complex part make AM famous in developing prototype and product in various industries, especially in aerospace, …
View article: Evaluation of Industrial Workplace Exposure to Metal Fumes using Toenail as Bio-Indicator
Evaluation of Industrial Workplace Exposure to Metal Fumes using Toenail as Bio-Indicator Open
The toxic gaseous generated from welding process contained a variety of heavy metals including the carcinogenic-type of metals. Widely, the occupational exposure to this toxic fume is associated with the occurrence of lung cancer and worke…
View article: Dual direction blower system powered by solar energy to reduce car cabin temperature in open parking condition
Dual direction blower system powered by solar energy to reduce car cabin temperature in open parking condition Open
El-nino phenomenon that strikes Malaysia with temperature recorded more than 35°C can lead to extreme temperature rise in car cabin up to 80°C. Various problems will arise due to this extreme rising of temperature such as the occupant are …