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  1. Nur Nazlina Saimon, Heng Khuan Eu, Anwar Johari, Norzita Ngadi, Mazura Jusoh, Zaki Yamani Zakaria
    Sains Malaysiana, 2018;47:109-115.
    Biodiesel, one of the renewable energy sources has gained attention for decades as the alternative fuel due to its remarkable properties. However, there are several drawbacks from the industrial production of biodiesel such as the spike in the production cost, environmental issues related to the usage of homogeneous catalyst and profitability in long term. One of the solutions to eliminate the problem is by utilizing low cost starting material such as palm fatty acid distillate (PFAD). PFAD is a byproduct from the refining of crude palm oil and abundantly available. Esterification of PFAD to biodiesel will be much easier with the presence of heterogeneous acid catalyst. Most of acid catalyst preparation involves series of heating process using conventional method. In this study, microwave was utilized in catalyst preparation, significantly reducing the reaction time from conventional heating method. The catalyst produced was characterized using X-Ray Diffraction (XRD), Brunauer Emmet and Teller (BET), Scanning Electron Microscopy (SEM), Temperature-Programmed Desorption - Ammonia (TPD-NH3) and Fourier Transform Infrared (FTIR) while percentage yield and conversion of the PFAD were analysed by gas chromatography - flame ionization detector (GC-FID) and acid-base titration, respectively. It has been demonstrated that the percentage yield of biodiesel from the PFAD by employing sulfonated glucose acid catalyst (SGAC) reached 98.23% under the following conditions: molar ratio of methanol to PFAD of 10:1, catalyst loading of 2.5% and reaction temperature of 70oC. The microwave-assisted SGAC showed its potential to replace the SGAC produced via conventional heating method.
  2. Siti Suhaili Shahlan, Mimi H. Hassim, Kamarizan Kidam, Haszlee Mohd Safuan, Norasikin Othman, Adnan Ripin, et al.
    MyJurnal
    According to annual reports from the Social Security Organization (SOCSO), between years 2009 and 2011,
    metal industry has the highest reported number of accidents compared to the other manufacturing industry in small
    and medium enterprises (SMEs). Therefore, the aim of this study was to investigate the actual causes of problems that
    lead to the accidents involving metal industries within SMEs. In this study, a checklist through site visits was used to
    collect the data. The overall results revealed that the main causes of accidents are; organization failure, human factor,
    machine failure and surrounding environments.
  3. Haslinda A. Sahak, M. Wijayanuddin Ali, Kamarizan Kidam, Saharudin Haron, Mimi H. Hassim, Norasikin Othman, et al.
    MyJurnal
    The accident rate in metalworking industries does show a slight reduction over the years. However, it is still so
    much higher compared to those of the other industries. Despite the various incentives provided by the government of
    Malaysia to improve this situation, the problems still remain. Therefore, this paper aims to investigate the commitment
    and implementation of occupational safety and health (OSH) aspect in the metal working industries. A survey was
    carried out by posting a total of 550 questionnaires to metal manufacturing companies throughout Malaysia. As
    many as 131 questionnaires were returned and a statistical analysis was done. Results of the analysis show that the
    employers’ commitment for safety operations is high but the implementation of OSH programmes is poor due to lack
    of resources and OSH knowledge.
  4. Kamarizan Kidam, Saharudin Haron, Zainazrin Zainal Abidin, Mimi Haryani Hashim, Adnan Ripin, Mohammed Wijayanuddin Ali, et al.
    MyJurnal
    Small and Medium Enterprises (SMEs) are known to be one of the major contributors to the national economy.
    However, in terms of Occupational Safety and Health (OSH) implementation and performance, these SMEs,
    especially in the metalworking sector have yet to meet the necessary standard. This paper discusses the statistical
    analysis of accidents in metalworking industry by using accident reports submitted to the Department of Safety and
    Health (DOSH) which involved 740 accident cases. The main objective is to identify the real causes of accidents and
    recommend an appropriate action plan for accidents prevention at the workplace.
  5. Kamarizan Kidam, Zainazrin Zainal Abidin, Mimi Haryani Hashim, Adnan Ripin, Mohammed Wijayanuddin Ali, Hazlee M. Safuan, et al.
    MyJurnal
    In general, the industrial accident rate in Malaysia is decreasing. However, statistically it is still relatively high
    if compared with that of other developing nations. One of the reasons why accidents keep on happening is poor
    learning from accidents. This paper discusses the level of accident learning, based on accident reports submitted to the
    Department of Occupational Safety and Health (DOSH) Malaysia and the Society Security Organization (SOCSO)
    Malaysia involving a total of 1,291 accident cases. Based on the quality and completeness of accident reports, the
    levels of learning were classified into five accident causation levels which are no, limited, fair, good and excellent
    learning.
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