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Floods are a natural phenomenon that frequently occur in Malaysia. Flooding will cause water to become cloudy or turbid. In this situation, the supply of clean drinking water is the most affected component. Therefore, many researchers have designed a water filter system to overcome these problems. One of them is used chemical as purifying agen, or known as coaguland and flocculation process. In this...
The advancement in medical imaging modality has made it possible to produce many types of digital medical images. However, limited effort has been done so far to utilize these valuable resources towards understanding the abnormalities' characteristic that the images might have. This is due to time consuming and expensive medical experts' interpretation processes. A case study on dental images has...
In optimizing PID controller's parameters using any optimization algorithm, fitness function is one of the important area to be explored. Among frequently used fitness function is a weighted transient response index (WTRI) where the weight is given to each of the transient response component including rise time, settling time, overshoot and steady state error based on their priority set in specification...
The implementation of PSO algorithm in optimizing PID controller's parameters has been in active research area recently. One of the popular plant to be controlled using this control strategy is a DC motor and various types of DC motors with variations in parameters value have been used in this research area. Moment of inertia is one of the important parameters of a DC motor which can affect the output...
Subjective evaluation of the abnormalities in dental images faces a few challenges such as low contrast. The problem arises due to the fix regulation of small X-ray dosage. Thus there are applications of image enhancement on the dental images and it is an acceptable technique to improve image quality and better diagnosis. Low contrast images could hinder the subjective evaluation and contribute to...
This paper focuses on the design and development of a low cost nephelometric turbidity sensor for the continuity of domestic monitoring of water quality. The electronic turbidity sensor operates based on the scattered light intensity with regards to light scattering in solids and liquids. The electronic turbidity sensor used Light Emitting Diode (LED) as light transmitter, Light Dependent Resistor...
Agarwood is well known as one of the expensive woods in the world. It has a unique scent which brings it to have wide usages especially in perfumery ingredient, as incense, in traditional medical preparation, and as symbol of wealth. Due to that, this paper presents the analysis on chemical profiles of agarwood chipwood, as a part of agarwood grading system. The work involved of Solid Phase Microextraction...
In recent years, PSO algorithm has been one of the popular soft computing technique and increasingly used in optimizing the parameters of PID controller. However, before PSO or any optimization algorithm in general can be successfully used to solve optimization problems, the validation of their functionality must be done earlier. This paper proposed the functionality validation of PSO algorithm which...
Water quality may differ in at least two physical parameters from water system typically used to measure the growth of microbes: pH and temperature. This study is to determine the most significant water physical parameters associated with the growth of Escherichia coli (E. coli) strain in the laboratory. Water physical parameter in distilled water with cultures strain in nutrient broth were performed...
Floods are a natural phenomenon that occur frequently. However, the flood could turn into disasters which causing widespread damage, health problems and deaths. Consequently, these phenomena affect the ecosystems and habitats. The source of drinking water is the most affected component due to floods. Many researchers have designed the methods to purify the turbidity of water. In this study, the water...
Due to its popularity and high market demand, critical analysis on agarwood vapour chemical compounds may provide an alternative quality discrimination of agarwood oil. The proposed work involves the extraction of high quality agarwood using headspace volatile divinylbenzene-carboxen-polydimethysiloxane (DVB-CAR-PDMS) solid phase microextraction (SPME) with different sampling time at 15, 30 and 60...
This paper focuses on a system identification review for distillation column. A recent developments and approaches explored by reseachers demonstrated the improvement and efficiency of linear and nonlinear modeling. Numerous investigation on the modeling of distillation column including essential oil extraction application have attracted much attention. Much research in recent years has focused on...
Agarwood is well known as one of expensive and valuable woods due to its high demand in the market. As part of ongoing research in establishing agarwood oil quality grading, this paper presents Direct Thermal Desorption (DTD) in extracting commercial, high and low quality of agarwood incense. The Gas Chromatography - Flame Ionization Detection (GC-FID) and Gas Chromatography - Mass Spectroscopy (GC-MS)...
This paper presents the performance effect of hollow pyramidal microwave absorber that had been applied with slotted array principle. The Sierpinski triangle was used as the slotted on the hollow pyramidal microwave absorber. This paper includes the theories, simulation and measurement result. The simulation using CST Microwave Studio Suite used to predict the Sierpinski triangle design of microwave...
In order to deal with more and more serious problem of microwave radiation pollution, palm oil biomass cement based microwave absorber is needed in order to prevent the buildings from the microwave radiation coming from telecommunication towers. This paper describes the capability of palm oil biomass waste from palm oil fuel ash (POFA) as an absorbing material in cement based microwave absorber that...
Conventional steam distillation is lack of control in order to satisfy the process requirement. In steam distillation process is regarded as the most significant parameter that contributes to the amount of output yield and quality of oil. An appropriate controller needs to integrate to the plant in order to regulate the steam temperature at desired or appropriate condition. This study demonstrated...
This paper present the implementation of step test in analysing the dynamic behaviour of hydro-diffusion system. Step test will provide sufficient information in order to determine the characteristics of transient performance such as gain, time constant and time delay. From the fitted voltage-temperature calibration curve, this system used the second order polynomial based on R2, RMSE and SSE. The...
This paper presents human stress pattern for alpha and beta waves obtained from EEG Power Spectrum analysis. The EEG stress evaluation conducted between human Cohen's PSS-10 Stress Questionnaires with EEG Power Spectrum. The EEG recording had been carried out among 86 volunteers as soon as they finished answering the stress questionnaires. The scores from questionnaires were computed immediately right...
This paper presents a review on significant parameters and techniques in water quality assessments used for drinking, domestic purposes and recreational purposes. To ensure water in good quality there are several parameters that have to be considered. Water quality index (WQI) is one of the most effective tools to an attempt to ascertain the water quality. There are many techniques on water quality...
A wireless sensor network (WSN) organizes collected data at a central location using a set of specialized transducers with a communications infrastructure for monitoring and recording conditions at various locations. A sensor network consists of multiple detection stations called sensor nodes, each of which is small, lightweight and portable. A WSN node contains several technical components which...
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