Displaying publications 1 - 20 of 72 in total

  1. Nasidi, Y., Bamgbade S. Abu, J. A., Adeleke, A. Q., Ali, B.
    The construction organization contributes to the generation of large quantities of
    construction waste across Nigerian cities. Nigeria has been known to lack appropriate procedures for
    managing construction waste, and developers and their contractors are left with the collection and
    disposal of construction waste management, despite the fact that they are expected to embrace all
    administrative, financial, legal, planning, and technological functions involved in solutions to all
    problems of construction waste. Therefore, this leads to ineffective construction waste management.
    This paper examines the effect of the government policy on the relationship between organizational
    resources and construction waste management among construction organizations, in Abuja, Nigeria. A
    quantitative method of survey was used to obtain data from managers of construction project-based
    organizations in Abuja, Nigeria. A total of 310 questionnaires were administered and 178 usable
    questionnaires were returned, yielding 57.4 response rate. Partial least square Structural equation
    model (PLS-SEM) was used to analyse the data. The Cronbach’s Alpha value for the variables ranging
    from 0.885 to 0.972 indicates a very good reliability of the research instrument. It was found that all
    the hypotheses are significant at 5% significance level. It was found that while government policy
    moderates the relationship between the Transformational leadership as a dimension of organizational
    resources and construction waste management, it does not support organizational learning and staff
    training. Copyright © 2016 Penerbit Akademia Baru - All rights reserved.
  2. Khattak, M. A., Arif, A., Hannan, A., Syukri, F., Hamid, H.
    Malaysia is currently planning on building its first nuclear power plant to add on more
    variety of national energy mix. This paper is on the study on the feasibility of the plan. We will show
    the current and forecast energy demand that make the nuclear power plant as the major solution to
    cover the deficit. Malaysia current strategy and action on building the plant will be presented in this
    paper. The challenge on delivering this project of energy mix is also a major aspect that will be
    discussed. The international and national policy regarding of nuclear power and its waste has provide
    a rough guidelines to execute this planning. While existing literature points to a correlation between
    nuclear power, strong state involvement, centralized energy planning and the rhetoric linking energy
    to national prestige and security, we show that these factors are not sufficient for a successful nuclear
    program. Another motivation on pursuing nuclear power is to reduce the carbon emission to the
    environment. By the end of this paper, we include the nuclear conventions that Malaysia involve and
    future prospect for nuclear power plant development. Copyright © 2016 Penerbit Akademia Baru -
    All rights reserved.
  3. Ya, N. A., Singh, H. R., Samat, A., Mohd Rashid, H. N., Ramli, N. H., Makhtar, N., et al.
    Length-weight relationship (LWR) of six fish species from the Sepang Besar River estuary,
    Peninsular Malaysia were analyzes. A total of 594 individuals belonging to six species namely Arius
    sagor, Photopectoralis bindus, Plotosus lineatus, Toxotes chatareus, Toxotes jaculatrix, and Thryssa
    dussumieri collected from April 2014 to February 2015 were measured and weighed. Among them, four
    species showed positive allometric growth and the other two species showed negative allometric
    growth. The exponent b value of LWR ranged between 2.94 (Toxotes chatareus) and 3.50
    (Photopectoralis bindus). This outcome of the present study has contributed to the knowledge of basic
    information on the length–weight relationship of six most abundant species in Sepang Besar River
    estuary which is important for future ecological studies and assist in fishery management. Copyright
    © 2015 Penerbit Akademia Baru - All rights reserved.
  4. Suhaimi, S. H., Hasham @Hisam, R., Rosli, N. A.
    This study was conducted to investigate the effect of particle size and polydispersity index
    (PDI) by changing the concentration of active ingredient and solid lipid in the Orthosiphon stamineus
    (O. stamineus) loaded nanostructured lipid carrier (NLC) formulation. O. stamineus extract was
    prepared by maceration method. From the HPLC analysis, the O. stamineus extract contains 38%
    sinensetin and 62% rosmarinic acid. The method used to prepare the formulation of O. Stamineus
    loaded NLC is melt emulsification homogenization technique. Solid and liquid lipid used were glyceryl
    monostearate and triglyceride respectively. It was found that the size of particles increased as
    increasing in concentration of active and solid lipid in the formulation. The best range for concentration
    of active and solid lipid are 1-4% and 1-3% respectively since the particle size and PDI needed are
    below 200 d.nm and 0.2. Collectively, based on particle size and PDI results show that the NLC system
    is highly potential to be a carrier of transdermal delivery for O. stamineus. Copyright © 2015 Penerbit
    Akademia Baru - All rights reserved
  5. Khattak, M. A., Mohd Ali, N. S., Zainal Abidin, N. H., Azhar, N. S., Omar, M. H.
    Most conventional power plants require a turbine as conversion system from various
    working fluid like water, gas, steam and wind into mechanical energy that will be used to generate
    electricity. In future, the forecast energy usage is higher and thus, to compensate this, the power plant
    needs high efficiency of turbine to extract maximum quantity of energy from the working fluid.
    Therefore, various improvements on turbine technology has been done and studied. There are four
    common type of turbine which is hydraulic turbine, gas turbine, wind turbine and steam turbine that
    will reviewed in this paper. Each turbine was differentiating based on their working fluid and different
    type of turbine has their own efficiency. There is some parameter that affects the turbine efficiency like
    the turbine component, the characteristic of working fluid, materials used, cooling invention and many
    more. There is also some future development in progress to enhance the turbine efficiency and thus
    increase the amount of electricity produce. The aims for this review paper is to find out the common
    type of turbine used in power plant as different power plant needs different type of turbine. About 46
    published studies (1939-2016) are reviewed in this paper. By reviewing others research studies
    worldwide, this review paper can be taken as a guideline in future regarding to common type of turbines
    used in power plant. Copyright © 2016 Penerbit Akademia Baru - All rights reserved.
  6. Taha, H., Mohebali, N., Chung, Y. L., Ismail, N. H., Aziz , A., Bakar, M. Z. A., et al.
    his is a short report on the recent investigation on the anticancer and antioxidant potential
    of Pseuduvaria macrophylla stem bark and leaf extract on human breast cancer cell (MCF-7), human
    prostate cancer cell (PC-3) and human colon cancer cell (HT29). LCMS experiment was done to
    identify the chemical composition in the methanolic extracts while GCMS analysis was done to
    determine the chemical composition in the hexanolic extracts. For antioxidant activity, the most active
    extract was leaf methanolic with 69.22 % of DPPH inhibition. Additionally, the leaf methanolic extract
    inhibited the better proliferation especially on human breast cancer cell (MCF-7) compared to hexane
    crude extracts due to more than 90% of cancer cell death and lowest IC50 value at range of 80.70
    µg/mL ± 0.08 – 106.70 µg/mL ± 0.07. The major detected compounds were α-Cadinol, neophytadiene,
    palmitic acid, linoleic acid, oleic acid and isopolycerasoidal and isopolycerasoidal methyl ester. The
    findings of this study support the anti-cancer claims of Pseuduvaria macrophylla leaf. Copyright© 2016
    Penerbit Akademia Baru- All rights reserved.
  7. Wahid, N. S. A., Saad, P., Hariharan, M.
    – This paper proposes the automatic infant cry classification to analyse infant cry signals.
    The cry classification system consists of three stages: (1) feature extraction, (2) feature selection, and
    (3) pattern classification. We extract features such as Mel Frequency Cepstral Coefficients (MFCC),
    Linear Prediction Cepstral Coefficients (LPCC), and dynamic features to represent the acoustic
    characteristics of the cry signals. Due to the high dimensionality of data resulting from the feature
    extraction stage, we perform feature selection in order to reduce the data dimensionality by selecting
    only the relevant features. In this stage, five different feature selection techniques are experimented. In
    pattern classification stage, two Artificial Neural Network (ANN) architectures: Multilayer Perceptron
    (MLP) and Radial Basis Function Network (RBFN) are used for classifying the cry signals into binary
    classes. Experimental results show that the best classification accuracy of 99.42% is obtained with
    RBFN. Copyright © 2016 Penerbit Akademia Baru - All rights reserved.
  8. Ismail, H., Aziz, A. A., Rasih, R. A., Jenal, N., Michael, Z., Azmi Roslan
    A simulation study has been done on Organic Rankine Cycle (ORC) with nine different
    working fluids in four different types of system configurations. An Organic Rankine Cycle is similar to
    Rankine cycle with the exception of using organic fluids for its working fluids. It is widely claimed to
    be more effective than steam Rankine cycle in low heat grade applications. The objective of the study
    is to study the performance of the system in conjunction with biomass thermal system by selecting the
    best working fluid and system configurations. The simulation is done using MATLAB and REFPROP
    9.0 respectively. The selection of the best configuration is based on the thermal efficiency of the system.
    It is found that toluene is the best option in simple ORC system. In ORC system added with internal
    heat exchanger or recuperator, dodecane and propylcyclohexane are the better option compared to
    other fluids. All the organic fluids show improvements with addition of recuperator. For temperature
    range of 150oC-300oC, it is found that water is not effective compared to organics fluids. Superheating
    process shows a slight improvement in a system with recuperator, but no improvement in simple cycle.
    The highest thermal efficiency is found in Scenario D. The second best is Scenario C, followed by
    Scenario A and the most ineffective is Scenario B. Copyright © 2016 Penerbit Akademia Baru - All
    rights reserved.
  9. Kaharudin, K. E., Salehuddin, F., Zain, A. S. M., Aziz, M. N. I. A., Ahmad, I.
    The reduction in the dimension of planar MOSFET device appears to be limited when it
    reaches to 22nm technology node. In this research , a new concept of MOSFET architecture named
    as Ultrathin Pillar Vertical Double Gate (VDG) MOSFET device was introduced and it was
    integrated with silicon-on-insulator (SOI) technology for better electrical performances. The virtual
    device fabrication and characterization were executed by using ATHENA and ATLAS modules from
    SILVACO Internationals. The process parameters of the device were then optimized by utilizing the
    Taguchi method for obtaining the lowest value of subthreshold swing (SS). The optimal result of the
    subthreshold swing (SS) was observed to be 58.07 mV/dec with threshold voltage (VTH) of 0.408 V
    and a very low leakage current (IOFF)value of 9.374 x 1016 A/µm. These results are well within the
    predicted value of International Technology Roadmap Semiconductor (ITRS) 2013 for low power
    (LP) requirement in the year 2020. Copyright © 2016 Penerbit Akademia Baru - All rights reserved.
  10. Wong, T. L., Ahmad, U. K., Tharmalingam, S.
    – The increasing use of fibre blends in clothing requires effective characterisation methods.
    Fibre analysts have often relied on the methods developed for single fibres to characterise fibre
    blends. This study was thus carried out using light microscopy and infrared spectroscopy to
    characterise binary-blended specimens and to evaluate the effectiveness of these tools on blended
    fibres. The blended samples were successfully characterised with the application of stereomicroscope,
    polarized light microscope (PLM), fluorescence microscope and attenuated total reflectance Fourier
    transform infrared spectroscopy (ATR-FTIR). PLM was more effective in discovering the presence of
    fibre blends compared to other techniques used in this work. Stereomicroscope allowed preliminary
    screening while fluorescence microscope provided useful information in fibre discrimination. High
    correlations (>80%) with combined infrared spectra of individual fibre components were reached for
    most blended samples. Therefore, light microscopy (stereo, polarizing and fluorescence) and infrared
    spectroscopy (ATR-FTIR) are recommended for the effective characterisation of fibre blends.
    Copyright © 2016 Penerbit Akademia Baru - All rights reserved.
  11. Zuan, A. M. S., Anuar, M. K. Z., Syahrullail, S., Musa, M. N., Rahim, E. A.
    Ocean wave energy is a renewable energy that is abundant on Earth. It is a concentrated
    form of solar energy where differential heating on Earth generate wind which transfer their energy into
    open water in form of waves. In relation to atmospheric emission, wave power is less environmentallydegrading
    than most other form of power generation. The fluctuating wave contains potential and
    mechanical energy which can be converted into electrical energy. A special device needs to be
    developed to harness the energy which is called Float Wave Energy Converter (FWEC). The purpose
    of this project is to design, fabricate and test the experimental model of FWEC. The efficiency of the
    model will be analysed based on wave power and power generated. The model are capable to generate
    power for small devices with low power consumption. The power generated from designated FWEC
    will be depends on several parameters which is wave amplitude, diameter ratio and shape of the model.
    This parameter would be used to determine the best design for FWEC. Copyright © 2015 Penerbit
    Akademia Baru - All rights reserved.
  12. Norhidayah, M., Dimin, M. F., Shaaban, A ., Norazlina, M. Y., Rostam, O.
    This paper investigated the influence of temperature and binder speed rate as a process
    variable towards amount of ammonia emission (NH3) in the fluidized bed top spray granulation.
    Response Surface Method (RSM) was employed in this experiment to optimize the process parameters
    in a top-spray fluid-bed processor. Three significant variables (binder feed rate, atomize pressure and
    temperature) were selected for the optimization studies. The statistical model was constructed via
    central composite design (CCD) using three screened variables. These methods are exclusively used to
    examine the "surface," or the relationship between the response and the factors affecting the response.
    The response in this experiment is the quantity of gas release, then the goal would be to find the factor
    settings that minimize the amount.The inlet temperature was identified as the most critical parameter,
    followed by the binder addition rate and atomize pressure, respectively. Copyright © 2016 Penerbit
    Akademia Baru - All rights reserved.
  13. Mohd Chachuli, S. A., Mohd Nazri, S., Yusop, N., Mohamad, N. R.
    This system is developed to help in reducing the number of cable theft activities.
    Currently, various methods have been applied by many companies to overcome this problem however
    cable theft activities were still occurred. Thus, a new system based on simple method is proposed in
    this paper to overcome these problems. The main objective of this project is to design and develop a
    cable theft monitoring system (CTMS) using GSM Modem. The main parts for this system are
    Peripheral Interface Controller (PIC) 16F877A microcontroller, voltage divider and temperature
    sensor. From the experimental results, it showed that CTMS able to detect the voltage drop and
    temperature changed with 99% of efficiency. This system is expected to enhance the capability of
    existing system in term of compatibility. With significant improved in range and reliable data
    accuracy in real time, this project promise a bright future to develop in reducing cable theft activities.
    Copyright © 2016 Penerbit Akademia Baru - All rights reserved
  14. Hayder, G., Puniyarasen, P.
    Biodiesel is an alternative fuel for diesel produced from waste oils, vegetable oils
    and animal fats. Biodiesel is produced using chemical process called transesterification. The
    main target of this study is the identification and evaluation of wastes from that process. Soap
    and glycerol have been identified as wastes from this biodiesel production process. Soap and
    glycerol were collected from a Biodiesel Production Plant. In one batch of biodiesel production
    process, 100 L of glycerin and 99 L of soap produced. Evaluation of these wastes was based
    on Chemical Oxygen Demand (COD) test, Total Suspended Solid (TSS) test, pH test, and Oil
    & Grease (O&G) test. Results of the above mentioned tests were compared with Acceptable
    Conditions from Environmental Quality (Industrial Effluents) Regulations 2009 (PU (A) 434)
    to identify the impact of the wastes towards the environment. For the soap, COD and O&G are
    not within the acceptable conditions of the regulations. On the other hand, for glycerin, COD
    is not in acceptable range of the regulations. However, the glycerin is not discharged into the
    environment since glycerin has been collected and kept in storage for the further in anaerobic
    digestion. On the other hand, soap couldn’t be discharged into the drain. This is not
    recommended because of the high value of COD and O&G. This may cause pollution to the
    environment and may endanger the life of human beings. Copyright © 2016 Penerbit
    Akademia Baru - All rights reserved.
  15. Ab Ghani, A. F., Razali, M. A. A., Zainal, Z., Idral, F.
    This paper aims to present a method of detecting deterioration on rotating machinery in the
    form of Machinery Fault Simulator (MFS) performed in the lab. The study enhances the knowledge of
    signal pattern of misalignment phenomenon as compared to baseline signal pattern obtained from
    normal condition of rotating shaft. The focus of this experiment was on misalignment problem. There
    are two types of misalignment which are parallel and angular misalignment. Input in frequency was
    selected for motor movement and the shaft start to rotate. The vibration signal from the shaft was
    acquired using in built tachometer in the MFS. In this experiment, data shows that the vibration occurs
    in different shape of the amplitude at different speed of the angular motion. In baseline test, the
    amplitude values are fluctuated at every accelerometer channels. Meanwhile, the amplitude on the
    angular test shows that the amplitude is higher at axial axes only compared to both axes. Meanwhile,
    for the second test, the angle of 15o
    was applied at inboard in the system caused to the misalignment of
    the shaft. In vibration analysis, the misalignment of the shaft was detected from the changes of the
    amplitude at three different axes. Copyright © 2016 Penerbit Akademia Baru - All rights reserved.
  16. Hamami, G., Mazni, M., Amir, M. S., Sukarman, F., Katon, M.
    In the local path planning navigation, a particular focus is given to local minimum
    problem. This problem occurs when a robot manoeuvre towards a desired target with no initial
    information of the environment and gets trapped in an infinite loop or also known as a dead
    end trap. Besides the local minimum situation, there are even worse situation in which when a
    mobile robot encounters two or more dead ends in a row. This situation is known as “multiple
    minimum” situation. The situation is forming more complicated problem than the local
    minimum situation. In this paper, a complete review is given on the local minimum and multiple
    minimum problems and the available solutions for these situations are discussed in detail.
    Copyright © 2016 Penerbit Akademia Baru - All rights reserved.
  17. Mohammad, R., Amin, Z., Abdul Aziz, S., Othman, N.
    The aim of this paper is to measure the safety awareness level of workers by means of
    hand related injury accident recorded in Production Department of Metal Fabrication Process
    Company located in southern peninsular Malaysia. Base on the accident data obtained from year
    2008 until 2012, it showed an increasing numbers of accidents involving hand. In year 2008 the rate
    is 36.3%, year 2009 is 30%, year 2010 is 37.5%, year 2011 is 33.3% and year 2012 is 37.5%. Site
    observation has been conducted to assess the hazards involve (safety and ergonomic) to the metal
    fabrication activities being carried out. Survey Questionnaires have been distributed to 80
    respondents from different job trade. The Respondent data was analysed to obtain the safety
    awareness level for each worker’s trade. Copyright © 2015 Penerbit Akademia Baru - All rights
  18. Kadir, Z. A., Mohammad, R., Othman, N.
    Purpose of this study to be conducted is to identify the risk factor of low back pain amongst port crane operator and to improve the health management program in the company. The objectives of this study are to evaluate the major group of port crane operator that having low back pain problem, to analyse the risk factors that associated to low back pain problem (WBV, Awkward prolonged sitting and shift work-psychological) , individual characteristics (sport activity or hobby), to analyse the associated rate operator’s absence from work (medical leave) and low back pain problem and to propose the basic ergonomic assessment checklist for management to investigate health incident cases and fit-to-work (ergonomics) screening checklist for new recruitment. A survey research design through the distribution of the questionnaire and interview & field observation will
    be used for research methodology. The population of this study consists of port crane operatorsRubber Tyred Gantry Operator (RTG). Questionnaire method used to collect all relevant information from correspondence. Interview also will be conducted to gain further details information. Data were analyzed with the usage of Statistical Package for the Social Sciences (SPSS) to make the process of analysis easier. As result, firstly, the study shown that there are association of risk factor for working posture and years of exposure with Low back Pain. The null hypothesis was rejected and there is probability that these risk factors have influence the low back pain. It was also concluded that the null hypothesis was accepted which means there are no correlation of risk factors for heavy physical works, previous job experience, previous accident with low back pain problem. Thirdly, the study
    shown there are no correlation of rate operator’s absence from work (medical leave) with low back pain problem as the null hypothesis was accepted with p value <0.05
    Keywords: Port, Low Back Pain, Ergonomics, Occupational Safety & Health, Rubber tyre gantry, Back Pain
  19. Mohammad Rashedi Ismail-Fitry, Safiullah Jauhar, Chong, Gun Hean, Mahmud Ab Rashid NorKhaizura, Wan Zunairah Wan Ibadullah
    Recently natural polyphenol compounds (PCs) of plants, gained wide consideration of
    scientists, companies and public people because of its unique pharmaceutical and
    preservative benefits in the physiological system. They can prevent mortal and serious
    diseases such as cancer, cardiovascular and Alzheimer. However, defining a suitable
    source of PCs and their proper, economic and efficient extraction method are still a
    challenge. The aim of this study was to review PCs as an important antioxidant, the
    significance of pomegranate as a source of natural PCs and its application in meat and
    meat product. This study also covers different types of PCs extraction methods such as
    solid-liquid extraction (SLE) method as a conventional extraction which using Soxhlet
    apparatus and several solvents and advanced methods such as microwave-assisted
    extraction (MAE), supercritical fluid extraction (SFE), accelerated solvent extraction
    (ASE), ultrasound-assisted extraction (UAE) and high hydrostatic pressure extraction
    (HHPE). Simple and developed analytical method of PCs is also reviewed in the study.
    SLE method is an easy and simple method but, it uses lots of chemicals and is not
    suitable for all kinds of PCs extraction. UAE is using for quick extraction PCs, SFE is green
    extraction method uses less solvent and have a good result but it needs high
    technology. ASE method is a proper alternative for Soxhlet extraction method for its
    quick result. MAE method has high extraction result but is not suitable for some
    thermolabile PCs. Several parts of pomegranate showed antioxidant and antimicrobial
    traits for shelf life extension of meat and meat product. Pomegranate peel is the
    strongest antioxidant followed by pomegranate juice and seed. Pomegranate peel
    prolonged chilled chicken meat shelf live up to three weeks.
  20. Elexson Nillian, Malini Mathialagan, Samuel Lihan, Grace Bebey, Patrick Guda Benjamin
    Kaempferia galangal rhizome is one of the traditional medicinal plant species in
    Zingiberaceae family and well known as “cekur” in Borneo. Rapid emergence of
    multidrug resistance of V. cholerae biofilm has increased the failure of antibiotic
    treatment in recent years. This research was designed to demonstrate the
    antimicrobial activity of K. galangal rhizome extract against twenty six (n=26) V. cholera
    biofilm which were isolated from outbreak in Limbang, Sarawak in 2016. K. galangal
    rhizome was analyzed by methanol extraction and tested against biofilm of V. cholerae.
    The susceptibility of V. cholerae towards K. galangal rhizome was evaluated using disk
    diffusion method which showed a maximum zone of inhibition of 12.0 mm at 1000
    mg/mL concentration. As a result, the MBEC50 of V. cholerae was between 125 mg/mL
    to 250 mg/mL while more than 90% biofilm eradication (MBEC90) was achieved by 500
    mg/mL extract concentration. Extract-treated cell showed change in the morphology
    of V. cholerae by destruction of cell wall. K. galangal rhizome extract acts as a potent
    antibiofilm agent with dual actions by preventing and eradicating the biofilm of V.
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