Assessment and Evaluation of Sand Control Methods for a North Sea Field

Imperial Users onl

Tahap Kesedaran Kakitangan Sokongan Universiti Pertanian Malaysia Yang Mendapat Kemalangan: Satu Kajian Kes

Tujuan utama kajian ialah untuk mengkaji tahap kesedaran terhadap keselamatan ditempat kerja di kalangan kakitangan sokongan Univesiti Pertanian Malaysia( UPM )yang pernah mengalami kemalangan. Kajian ini juga bertujuan untuk mengetahui:jenis kecederaan yang dialami oleh pekerja , sebab utama yang mengakibatkan kemalangan,program atau aktiviti yang dijalankan oleh Jabatan bagi menimbulkan kesedaran terhadap keselamatan,penerimaan pekerja terhadap kerja mereka dan program keselamatan yang diperlukan oleh pekerja bagi mengurangkan kejadian kemalangan. Seramai 41 orang pekerja sokongan UPM dalam kategori C dan D yang pernah mengalami kemalangan telah dipilih sebagai responden untuk kajian ini. Data yang dikumpul telah dianalisiskan dengan menggunakan "Statistical Package for Sosial Science" ( SPSS / PC+ ) . Frekuensi,peratus,dan min telah digunakan dalam analisis ini

Mechanical And Tribological Properties Of Recycled Carbon Fiber Reinforced Polypropylene Composites

Recently, the use of carbon fiber waste is accepted as a wise approach to benefit the performance of the carbon fiber and considered as green effort for disposal management. This research is an effort to study the potential of recycled carbon fibers as reinforcement in polypropylene (PP) matrix especially for tribology application. The effects of fibers condition, fiber loading as well as chemical modifications on physical, mechanical and tribological properties of PP reinforced with recycled carbon fibers were studied. The composites were prepared via melt compounding using a Haake internal mixer at 180 ºC and rotor speed of 50 rpm for 10 minutes. This research is divided into three different studies; 1) effect of recycled carbon fibers condition (with or without uncured resins) on the physical and tensile properties at different carbon fiber (CF) loading of 0, 3, 5, 10, 13, 15 wt%, 2) effect of chemical modification using 3 and 5 wt% maleic anhydride (MA) on the tensile properties and 3) wear characteristics of recycled carbon fiber reinforced polypropylene composites at CF loading of 0, 0.5, 1.0, 3.0, 5.0, 7.0, 10.0, 13.0, 15.0, 20.0 wt%. In Study 1, the uncured resins on carbon fibers had proven to improve the interaction between reinforcement and matrix which manifested by increment in physical and mechanical properties with the optimum at 3 wt% fiber loading. In Study 2, the recycled carbon fibers were first pulverized into finer fibers before undergone oxidation in nitric acid and treatment with maleic anhydride. The treatment was observed to improve the physical and mechanical properties of the composites at low MA content of 3 wt% and proven to increase interaction at limited loading of fibers for only up to 1 wt%. The properties were supported by morphological analysis on the fracture surfaces observed by using Scanning Electron Microscopy and chemical analysis using Fourier Transform Infrared Spectroscopy. In Study 3, the composites with low carbon fiber loading of up to 3 wt% imposed higher resistance to dry sliding friction. In contrast, the increment of fiber loading at 5 wt% to 20 wt%, decreased the wear rate of the composites due to the formation of patchfilm and transfer film which accelerated with the MA treatment. The wear mechanism of the composites was for different fiber loading was proposed from morphological observation. As the conclusions, the composites showed promising self-lubricating properties with significant physical and mechanical properties

Health Risk Assessment Of Persistent Organic Pollutants Through Consumption Of Chicken Meat

Persistent organic pollutants (POPs) are widely dispersed throughout the environment including food. Bahan-bahan pencemar organik persisten (POPs) di dapati tersebar dengan meluasnya di alam sekitar termasuk makanan

Effects Of Ownership Structure And Monitoring Mechanisms On Earnings Quality And Market Assessment

Tesis ini didorong oleh peralihan ke arah kawalan berdasarkan pasaran atau kawalan kendiri bagi pasaran modal Malaysia. This thesis is motivated by the move towards a market-based regulation or selfregulation for the Malaysian capital marke

Improving particle swarm optimization convergence with spread and momentum factors

Particle Swarm Optimization (PSO) is a swarm intelligence search method based on the behavior of birds flocking and fish schooling. It is known for its ability to perform fast computation compared to other evolutionary computational methods like Genetic Algorithms. Several parameter control methods have been developed to make the PSO algorithm faster and more accurate such as linearly decreasing inertia weight (LDIW) and time-varying acceleration coefficients (TVAC). This paper presents an improvement over existing techniques by introducing spread factor and momentum factor into the PSO algorithm. Test results show that the PSO with these two factors produce superior performance and suitable for applications where speed and precision are important

Establishing System Quality In Accredited Biomedical Calibration Laboratory

Medical equipment requires confirmation whether they comply with the specifications and safety regulations before they can be used in healthcare facilities. Politeknik Sultan Salahuddin Abdul Aziz Shah (PSA) has set up the biomedical equipment analyzer calibration laboratory starting from October, 2010. These stations are capable to test and calibrate medical device analyzers such as patient simulator, safety analyzer, infusion pump etc. PSA plans to apply ISO/IEC 17025 certification, specifically for laboratory accreditation for the calibration laboratory to ensure and establish its reliability and commitments towards providing quality services. The purposes of this study are to discover the perceived service quality of Biomedical Calibration Laboratory, to analyze the SERVQUAL dimensions in the context of setting-up accredited Biomedical Calibration Laboratory and to evaluate the relationship between the SERVQUAL factors towards the perceived service quality of Biomedical Calibration Laboratory. The methodology used in this research are both quantitative and qualitative method. The five SERVQUAL dimensions: tangible, reliability, responsiveness, assurance and empathy are being used in contributing perceived service quality of Biomedical Calibration Laboratory. The dimensions in this study are used as a guidelines in the quality manual to establish quality service of accredited Biomedical Calibration Laboratory in Malaysia, based on the experience gained after going through the whole systems, the proposed process also can be used by other health care industries