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Publications (157)
Building Information Modeling (BIM) plays a pivotal role not only in construction but also in the continuous evaluation of building energy dynamics. BIM methods provide precise energy performance assessments and consumption evaluations. This study focuses on assessing Energy Use Intensity (EUI) using Autodesk Insight 360 for a case study building a...
The Lawas community in Sarawak, especially in the town area, heavily depends on treated water from the Trusan Regional Water Treatment Plant (WTP) for daily water needs. However, the hilly and remote areas face several challenges, such as deteriorated water distribution, inadequate supply, and low water pressure. These issues are worsened by the in...
Road degradation is a common problem in Malaysia which caused by weather changes, expanding loads as well as the effects of ageing, moisture and temperature results in high maintenance expenses on conventional bitumen pavement. Therefore, it has been recommended on the modification of bitumen as a substitute technique to address this issue and exte...
Plastic waste generation has become a pressing environmental challenge due to the widespread use of plastic materials, which offer versatility, durability, and cost-effectiveness. This study investigates the feasibility of fabricating recycled high-density polyethene (HDPE) planks for furniture applications by evaluating their physio-mechanical pro...
Filtration is one of the practical technologies for water and wastewater treatment. Yet, such a technique involves various factors considered in the design, including capital costs, electricity consumption, labour force, and technical operations to ensure optimal performance. The process of filtration process has become economically and environment...
This research focuses on an important project to upgrade the water supply system for a rural area in Kampung Bongol, Tamparuli, Sabah, Malaysia, with exceptional involvement of the communities. This village is located approximately 60 km away from Kota Kinabalu town center, and the journey takes around two hours by car. Despite its remote location...
This paper establishes a structural relationship between BIM strategies in eleven (11) energy sustainability elements divided into management and technical aspects that impact a sustainable campus. The work established thirteen (13) benchmarks for independent variables and one (1) dependent variable. The exploratory research design used in this stu...
Conventional sand is commonly used in water and wastewater treatment as filter media. However, such effective media may fully or partially replace agro-based materials for less critical applications, including stormwater quality control. This paper highlights the potential use of carbonized coconut shells (CS) as efficient filter media, tested on s...
The impact of rainfall on landslides is not an uncommon issue worldwide, including in Malaysia. It is a major challenge for geotechnical engineers to ensure the constructed slope is safe and can sustain longer periods of time, including during heavy rainfall. Kota Belud, Sabah, has been selected as the study area to meet the study objectives. Heavy...
Nanofiber Polyethersulfone (PES) membrane fabrication using the electrospinning method incorporating dry/wet phase inversion was investigated. The electrospinning process is a straightforward and versatile method to produce one-dimensional nanostructures, especially nanofibers. The electrospun’s outcome can be affected by the various process parame...
T Campus Sustainability can be defined as the integration of sustainable environmental practices into higher education institutional practices. The involvement of the university community, including administration, academic
departments (faculty and students), researchers, and the local community, is required for an effective transition to a sustain...
Transportation management and sustainable transportation planning were critical. A well-planned transportation system is extremely beneficial in terms of efficiency and environmental friendliness. To that end, parking charging was one of the transportation management topics covered in this study. A parking charging system is one in which a user can...
Flexible pavement covers three quarters of the total local roads including Sabah. An ideal flexible pavement should have sufficient thickness to distribute the load to subgrade but not overdesign which cause extra cost. This research paper is conducted to develop an expert system for flexible pavement design in Sabah. It is aimed to reduce the hu-m...
Flexible surface treatment for exterior pavement applications and the particular requirement to be specific pedestrian walkway design and parking areas are the fundamental feature of paver block identification. The use of conventional materials such as cement, aggregate, and sand is no longer such a priority. Under those circumstances, the producti...
This paper is highlighting the modification in implementing PBL that previously involves physical work on-site. Due to the movement control order (MCO) enforced due to the covid-19 pandemic, the course assessment targeted to instill the program outcome (PO) of Environment and Sustainability attribute was strategized into 3 phases. The analysis foun...
This study aims to bibliometrically review the trends of literature related to agricultural wastes in the filtration and adsorption technology, published from 2016 to 2020 while providing future research directions. It includes removing suspended solids, chemical contaminants, and toxic gases from water, wastewater, and other industrial application...
Tropical country like Malaysia is rich with residual soil and nurtured with high rainfall amount on average 2,550 mm per year. From 2009 until 2018, there are many landslide events reported in the news at Ranau, Sabah and Canada Hill Miri, Sarawak that occurred during rainy season and the landslide recurs within same location over the years. The ob...
Landfill leachate is well known as contains a high concentration of pollutants and
threatens our environment as well as human life. Therefore, this study investigates the potential of ozonation (O3) and tin tetrachloride (SnCl4) in remedying stabilised landfill leachate (SAL). The performance of this treatment is evaluated by measuring the percenta...
Polluted stormwater has become a severe problem in the environment as the runoff collecting various contaminants before discharged into water bodies, degrading the water quality and risking aquatic life. This study aims to evaluate selected agro-based filter media to treat stormwater through environmental laboratory works. These include kernel shel...
The aquatic nature, including streams, rivers, marine, and groundwater, becomes susceptible to most contaminants’ effects through various pathways known as point and non-point sources. Point source pollution from inefficient sewage treatment plants (STP) will likely produce effluents that could deteriorate the environment. Therefore, this study ass...
Assessing water quality through modeling has the advantage of simplifying the tedious and complicated on-field investigations while reducing potential on-site risks, costs, and time. A combination of manual observation and simulation can predict water quality along the river, as the computer program can instantly generate reliable data based on the...
A beach cleaning machine that suits local Kota Kinabalu shoreline beach profiles is designed and developed in this paper. For a clean future, beach cleaning is essential to collect garbage from the beach with a simple and practical design and at the same time able to create an environmentally user-friendly influence. This work has developed a custo...
The stormwater management practices have changed from conveyance-oriented to storage-oriented, as part of the Best Management Practices (BMPs). Still, uncontrolled development increases potential pollutants in the stormwater, which conveys into a water body or river. Continuous improvements in the filtration mechanism would complement stormwater ma...
This study presents a compressive strength test of ICEB units with two different methods under five condition. The first method requires that the tongue be removed by grinding the surface of the samples until the top and bottom surface are parallel with a tolerance of 0.1 mm for every 100 mm and tested with mortar filling (condition i) and without...
This study presents a compressive strength test of standard ICEB units with two different methods under five condition. The first method requires that the tongue be removed by grinding the surface of the samples until the top and bottom surface are parallel with a tolerance of 0.1 mm for every 100 mm and tested with mortar filling (condition i) and...
Disposal of accumulated plastic waste daily is an exigent in solid waste management. Hence, this study investigated the possibility of utilizing plastics waste in paver block fabrication for the pedestrian walkway. The development of paver block containing recycled plastic was started with a trial mix in order to identify the appropriate method for...
S-Curve analysis in the construction interpreted as managing project with knowledge and traceable in the context of sustainable construction while displays the cumulative costs, labour hours or other quantities plotted against time. In the contract administration, delays in completing a construction project led to the breach of contract but, in con...
Abstract: Transportation and movement of goods are one of the essential human needs, and special attention is placed on the planning of a large city. It has always played an essential role in the development of society, initially concerning trade routes and harbour, but more recently about land and air-based systems. Therefore, in a particular area...
The efficiency of the concrete ready mix service provider is undoubtedly and has become a widespread trend among contractors in which facilitates and eliminated a large budget surplus in maintenance, operating costs and is preferred as it reflects more efficient asset utilization. However, the quality assurance of concrete supplied is always raised...
Universiti Malaysia Sabah (UMS) campus in Kota Kinabalu consists of a large detention pond that stores the stormwater and limits the outflow rate into Likas' estuary. It is no doubt the detention pond has been designed per the Urban Stormwater Management Manual (USMM) requirement in terms of quantity control, however rapid development and changes i...
Graphical abstract 433 Research Paper Solar photovoltaic Polyvinylpyrrolidone Phenyl-C71-butyric acid methyl ester Nano-engineering Response Surface Model (RSM) • PVP:PC71BM nanofiber structure modeling is reported • Applied voltage and polymer formulation weight percentage effect on nanofiber diameter is analyzed and optimized using RSM software •...
As green materials, the organic nano-fiber membranes are very potential for diverse functional purposes. The growth parameters based fiber alignment; surface morphology and diameter are key attentions to control mechanical, structural, electrical, and optical properties. These physical aspects of nanofiber are diversified its practical significance...
Clay fired bricks are commonly encountered in the construction sector as infill between structural frames. This system has been favoured by builders due to familiarity, ease of manufacture, and they also do not require skilled labourers to erect. Produced from moulded clay and hardened by firing in a kiln, brick production is both energy intensive...
The building construction significantly contributes to the carbon growth due to the high carbon emissions produced by buildings and their effects on climate change. Malaysia has devoted to reduce the carbon dioxide emission by the year of 2020. Therefore, the Interlocking Compressed Earth Bricks (ICEB) has been introduced as an alternative for low...
The explosive growth of population in Sabah has caused the rise of private vehicle ownership and utilizations which give significant defects on transportation and environmental conditions, especially in the central city of Sabah, Kota Kinabalu. As the demand in transportation increased, traffic congestion occurs due to the abundance of a private ve...
Mixed matrix membranes (MMMs) were fabricated from a 25 wt% of polysulfone (PSf) with halloysite nanotubes (HNTs) selected as the inorganic filler. The incorporation of 1 wt% to 5 wt% of HNTs in the membrane is promising in improving the performance of the membrane for gas separation due to its barrier properties. HNTs was modified by surface-etche...
Gas separation by using membrane-based technology is one of the rising technologies used in the industry. It has many advantages such as low in cost and energy consumption. However, this technology is limited because of the "trade-off" exists between permeability and selectivity of the membrane. Thus, in this study, an inorganic filler, halloysite...
Abstract:
Congestion pricing is a policy at which road users being charged with certain amount for using particular road during peak hours. It is as much about meeting the demand of car drivers for road space as allocating road space between road users. It has been successfully implemented in some other countries such as Stockholm, London and Singa...
The conventional fired clay brick (FCB) is a significant building material in the construction industry. However, Besides, the construction field nowadays is designed and constructed without the considerations on the environmental impacts. Thus, the interlocking compressed earth brick (ICEB) was introduced replacing the conventional brick where the...
Composting involves the biological decomposition of materials (solid or semi-solid) using microorganisms over a period of time, resulting in organic material degradation and volume reduction. The composting process has always been a part of natural ecosystems and four basic components: organic matter, moisture, oxygen, and bacteria. However, failur...
The conventional clay bricks, which are used mainly for the masonry wall construction, are suffering from the increase of energy price as well as environmental problems due to soil excavation and high carbon dioxide emission. The use of green interlocking compressed brick (ICB) containing palm oil fuel ash (POFA) may be the solution for these probl...
Global sand crisis is being such a great concern these days and it has greatly influenced the world in various means including in the construction field. One of the effective alternatives that can be implemented is by using the waste material for the construction purpose. This paper investigates the physical and mechanical properties of compressed...
The abundance of untreated sewage that consists of valuable nutrients and water scarcity has motivated the community to process and recycle the waste through efficient and sustainable approach. The presence of dissolved nutrients and emerging contaminants are increasing lately due to the rapid anthropogenic activities. Over the years, many studies...
The innovation in education for global business is a collection of academic research articles from the Asian International Conference on Engineering Education. The engineering education case studies from teachers, students and engineers in Asia are discussed in each articles where it will advanced the field of engineering education and promote the...
The Asian Conference on Engineering Education was founded by Professor Emeritus Takao Hanabusa of Tokushima University, Japan with Professor Yun-hae Kim of Korea Maritime and Ocean University in 2009. The past seven editions of the conference have been organised in various venues around East Asia involving numerous institutions of higher learning a...
Global sand crisis is being such a great concern these days and it has greatly influenced the world in various means including in the construction field. One of the effective alternatives that can be implemented is by using the waste material such as the quarry dust as the replacement of sand for the construction purpose. This paper investigates th...
The increasing demand for environmental protection and renewable energy has made bioenergy technologies such as anaerobic digestion substantially attractive. The main objective of this study is to determine the biogas yield from the raw seaweed Eucheuma cottonii and waste products using anaerobic digestion, operated under different physical conditi...
This study investigated the mechanism of how POFA mitigated the ASR expansion. Two types of POFA; the UPOFA and GPOFA with different fineness were used to replace the cement at 20% and 40% and their effects on the mortar bar expansion, calcium hydroxide, alkali dilution, and calcium concentration were investigated. The results showed that UPOFA has...
Flood event is one of the natural disasters that increasingly threaten the safety of the people in an area. Critical
infrastructure albeit important, has been shown to be vulnerable to flooding and damages to critical infrastructure
element may affect large areas over a longer time period. Critical infrastructures play an important role in
function...
Rainfall data has a significant role in hydrological design which is, it’s produce the intensity duration frequency
curve. IDF curve gives critical information that needed in the design of water management infrastructure, it gives
information by showing the mathematical relation of rainfall intensity, recurrence interval of the storm and
duration o...
In the recent years, the impacts of floods have gained importance because of the increasing number of people who are affected by its adverse effects. Flood destroyed critical infrastructures that are needed as shelter and also emergency relief for victim. In order to provide a better understanding of flood risk management, a review of current pract...
Polymer concentration had been identified as one of the important parameters tailoring the membrane properties. In this work, the effects of polymer concentration on the morphological and mechanical properties of membrane were investigated at three different polymer concentrations, i.e., 20, 25 and 30 wt%. The viscosity of dope solutions were deter...
Novel charged–surface modifying macromolecules (cSMMs) were synthesized and incorporated into polyethersulfone(PES) hollow fiber membranes for water separation application. The macromolecules were synthesized with diisocynate, polypropylene oxide and poly(ethylene glycol)–hydroxybenzene sulfonate (PEG–HBS). In this study, the surface of polyethersu...
The effect of jet stretch on the morphology, pure water permeation and sodium chloride rejection of hollow fiber membranes is analyzed by varying the spinning take up speed. Polyethersulfone hollow fibers were spun using dry–wet spinning technique. The membrane formulation of PES/NMP/Water/PVPk10 is spun at constant extrusion rate of 3.0 cm3/ min....
The objective of this work is to modify the polyethersulfone (PES) hollow fiber membranes by blending with Surface Modifying Macromolecules (SMMs) which were able to introduce charges at the membrane surface. To study the effects of SMMs, PES solutions with and without blending SMMs were spun by the dry–wet phase inversion method. The membranes wer...
This paper gives an overview about uniqueness characteristics of Vertical Strained Impact Ionization MOSFET (VESIMOS) technology act as bio-sensing devices. There are three proposed devices used VESIMOS technology which are Single Channel VESIMOS (SC-VESIMOS), Dual Channel (DC-VESIMOS), VESIMOS Incorporating Dielectric Pocket (VESIMOS-DP) are proba...
Electrospinning has been employed to produce titanium oxide nanofibers from an ethanolic solution containing precursor titanium tetraisopropoxide and polymer polyvinylpyrrolidone with acetic acid as a stabilizer. Response surface methodology based on Box-Behnken Design was implemented to investigate the influence of applied voltage (10–25 kV), flow...
Fast switching with an enhanced reliability device structure of Vertical Strained Impact Ionization MOSFET incorporating Dielectric Pocket (VESIMOS-DP) has been successfully design, simulated and analyzed in this paper. Ultra-low power with low subthreshold swing (S) and high breakdown voltage are imperative for ultrasensitive biosensors. Impact io...
This paper aims to develop the intensity-duration frequency curve for Ulu Moyog and Kaiduan station and to determine the suitable distribution to be used to analyze the rainfall data. Rainfall data is analyzed using Log-Pearson and Gumbel’s distribution. Rainfall data are taken from 2 station, Ulu Moyong station and Kaiduan station. The IDF curve w...
Linear moments (LM) has been applied in extreme rainfall study for several countries, including China, United States of America, and Peninsular Malaysia. In this study, the LM procedures were applied to extreme rainfall data corresponding to locations provided in Malaysia Urban Stromwater Manual (MSMA) to derive new design rainfalls. Different reco...
This paper studied the effect of project-based survey camp experience to the students'confidence and perception and achievement of learning outcomes via a combination of methods include questionnaires, reflection form and mark analysis. It was found that the strategy improves the student' confidence in performing engineering survey tasks with post-...
This study presents the effect of Ultrafine Palm Oil Fuel Ash (UPOFA) in controlling the Alkali-Silica Reaction (ASR) expansion in mortar bar through pozzolanic reactivity, alkali binding, reduction of aggregate dissolution and change in the Alkali Silica Gel (ASG) composition. The expansion of mortar bar was investigated using the Accelerated Mort...
Advances in membrane technology have stimulated a growing interest in the development of mobile water treatment systems for rural areas lacking clean water access. This study explored the use of ultrafiltration hollow fibre (UF-HF) membranes as a filter medium in a mobile water system for surface water treatment. Prior to the surface water treatmen...
Electrospinning is the most versatile and cost effective technique to produce titanium oxide (TiO2) nanofibres. An ethanolic solution containing titanium tetraisopropoxide, polyvinylpyrrolidone and acetic acid was loaded in the syringe to produce TiO2 nanofibres. In the present work, a custom-made electrospinning system was developed to investigate...
Oil palm empty fruit bunch (OPEFB) is recommended as a filtration medium due to its fibrous characteristics and abundance as an agricultural byproduct. OPEFB is utilized to treat urban stormwater using a deep bed filter column. Urban stormwater samples were collected from Sembulan River, which flows through the Kota Kinabalu city area of Sabah, Mal...
In Sabah, Malaysia, there are still high probability of limited clean water access in rural area and disaster site. Few villages had been affected in Pitas due to improper road access, thus building a water treatment plant there might not be feasible. Recently, Kundasang area had been affected by earthquake that caused water disruption to its peopl...
Highly concentration of ammonia nitrogen in urban drainage could pollute the river and give pungent smell. The strong pungent odours that coming out from the urban drainage may degrade the image a city and could possibly reduce the present of tourist. To minimize the presence of pungent odours, the ammonia nitrogen can be removed from the urban dra...
The preparation and testing of geopolymer ceramic membranes for water separation is presented. Geopolymers are typically used in refractories and as precursors to ceramic formation, allowing the production of ceramic-like materials with low temperature processes. A new geopolymer material was synthesized using local clay from Sabah, Malaysia and it...
This paper presents the effect of ultrafine palm oil fuel ash (UPOFA) in controlling the alkali-silica reaction (ASR) expansion in mortar bar through pozzolanic reactivity, alkali binding, reduction of aggregate dissolution and change in the alkali silica gel (ASG) composition. The expansion of mortar bar was investigated using the accelerated mort...
Titanium dioxide (TiO2) has high photocatalytic activity and it is extensively applied in solar cell technology and environmental science. Electrospinning is acknowledged as the most versatile technique to fabricate nanofibers such as metal oxide nanofibers. Titanium dioxide nanofibers are generally prepared by electrospinning organic solutions con...
In this paper, an equivalent circuit model is
proposed that describes the avalanche and snapback
characteristics of Vertical Impact Ionization MOSFET
(IMOS). The equivalent circuit model is constructed using
MOS transistors that represent the avalanche characteristics.
The main goal is to predict the vertical IMOS integrated
circuits by using circu...
A Dual Channel Vertical Strained Impact Ionization
MOSFET (DC-VESIMOS) equivalent circuit model has been
successfully designed and modelled in this paper.
Miniaturization of biosensor using field effect transistor (FET)
based sensors with superb performance and enhanced reliability
plays a vital role in transducing component of a biosensor. The
imp...
Analysis of electromyogram (EMG) signal processing and its application to identify human muscle strength of rehabilitation purpose has been successfully carried out in this paper. Single channel EMG signal was obtained from human muscle using non-invasive electrodes and further process by signal acquisition circuit to get a suitable signal to be pr...
Snapback breakdown is the second order effect of avalanche breakdown in a device. Snapback occur when the excess supply voltage and high currents created flow through the device and become unstable. These two breakdowns are used to explain the concept of Vertical Impact Ionization MOSFET (IMOS) in its Equivalent Circuit Model. The equivalent circui...
It is vital that less paper be used in the running of the education system in order to manage a university in a sustainable way. OMR is a very important system of marking and evaluating students objectively and therefore vital for the management of a university education system. The OMR system should therefore be implemented in a sustainable way bu...
The dual channel of VESIMOS (DC-VESIMOS) have been analyzed using the Silvaco TCAD tools whereas the equivalent circuit modeling of DC-VESIMOS have been analyzed using the ORCAD PSPICE software. Strained SiGe technology is introduced because it is believed that it is able to lower down the high supply voltage that are needed by vertical and planar...
-In this paper, an equivalent circuit model is proposed that describes the avalanche and snapback characteristics of Vertical Impact Ionization MOSFET (IMOS). The equivalent circuit model is constructed using MOS transistors that represent the avalanche characteristics. The main goal is to predict the vertical IMOS integrated circuits by using circ...
Analysis of electromyogram (EMG) signalprocessing and its application to identify human musclestrength of rehabilitation purpose has been successfully carriedout in this paper. Single channel EMG signal was obtainedfrom human muscle using non-invasive electrodes and furtherprocess by signal acquisition circuit to get a suitable signal tobe process....
The correlation and effect of education strengthening strategies on students effectiveness in knowledge understanding and technology skills of environment and sustainable by incorporating community participation and outreach community field-work were evaluated in this paper. It discussed the challenges and learning approaches of project based learn...
Knowing and unknowingly, noise pollution has its negative impact on the quality of our everyday life. Assessment of noise during peak time in the main campus of Universiti Malaysia Sabah (UMS) located in Kota Kinabaluwas highlighted in this paper. This assessment was conducted in several locations inside the campus between September to November 201...