Browsing Journal Articles by Title

Now showing items 1779-1797 of 2678

    • Optical tomography: Image improvement using mixed projection of parallel and fan beam modes 

      Siti Zarina, Mohd Muji; Ruzairi, Abdul Rahim, Prof. Dr.; Mohd Hafiz, Fazalul Rahiman, Dr.; Zarina, Tukiran; Nor Muzakkir, Nor Ayob; Elmy Johana, Mohamad, Dr.; Muhammad Jaysuman, Pusppanathan (Elsevier Ltd, 2013-07)
      Mixed parallel and fan beam projection is a technique used to increase the quality images. This research focuses on enhancing the image quality in optical tomography. Image quality can be defined by measuring the Peak ...

    • Optical tomography: Velocity profile measurement using orthogonal and rectilinear arrangements 

      Ruzairi, Abdul Rahim; Yusri, Mohd Yunosa; Mohd Hafiz Fazalul, Rahiman; Siti Zarina, Mohd Muji; Chiam, Kok Thiam; Herlina, Abdul Rahim (Elsevier Ltd., 2012-03)
      In tomography applications, flow velocity is an important flow characteristic for analysis. Excessively high particle velocity will cause high energy consumption, severe pipeline wear and particle degradation. This paper ...

    • Optical, electrical and photovoltaic studies of γ-MnS thin films deposited by spray pyrolysis technique 

      Amara, Z.; Khadraoui, M.; Miloua, R. (Universiti Malaysia Perlis (UniMAP), 2019-07)
      γ-MnS thin films were prepared on glass substrate by spray pyrolysis method at 280 °C. The optical constants and thickness of the films were extracted using the pattern search optimization technique in combination with a ...

    • Optically enhanced N doped ZnO amorphous nanostructures grown by low cost ultrasonicated sol–gel route 

      U. P. S. Gahlaut (Universiti Malaysia Perlis (UniMAP), 2022-07)
      N doped ZnO amorphous nanostructures with excellent optical properties were grown by the ultrasonicated sol-gel route. The samples were characterized using structural, morphological and optical studies. XRD patterns confirmed ...

    • Optimal coefficient of friction onartificial knee joint contact surfaces 

      Mohd Hafis, Sulaiman; Nur Farahana, Ramli; Mohd Ridzuan, Mohd Jamir; Nur Adlina, Mohd Takhiudin (Trans Tech Publications, 2013)
      Wear generated by the presence of frictiononknee joint contact surfaces can cause debris, which may lead to failure of the artificial knee joint. In this study, the effects of friction coefficients occur on the knee joint ...

    • Optimal coordinated design of multiple damping controllers based on PSS and UPFC device to improve dynamic stability in the power system 

      Ali Nasser, Hussain; Mohd Fareq, Abd. Malek, Dr.; Mohd Abdur Rashid, Dr.; Latifah, Mohamed; Nur Adyani, Hj. Mohd Affendi (Hindawi Publishing Corporation, 2013)
      Unified Power Flow Controller (UPFC) device is applied to control power flow in transmission lines. Supplementary damping controller can be installed on any control channel of the UPFC inputs to implement the task of Power ...

    • Optimal overcurrent relay coordination: a review 

      Muhamad Hatta, Hussain; Siti Rafidah, Abdul Rahim, Dr.; Ismail, Musirin, Prof. Dr. (Elsevier Ltd., 2013)
      This paper presents an overview on optimal overcurrent relay coordination in protection system and protective relays. Efforts have been made to include all methods used for the coordination of overcurrent relays. It includes ...

    • Optimal race analysis parameters of freestyle swimming events: a case study 

      Mollon, Desdemona (Kementerian Pendidikan Tinggi (KPT), Malaysia, 2022-08-11)
      Introduction: During the swim meet, race analysis is a common practice to provide insight into each event. This case study explores the variables of swimming performance using the video analysis method. Purpose: To ...

    • Optimal selection of long time acoustic features using GA for the assessment of vocal fold disorders 

      Sindhu, Ravindran; Neoh, Siew Chin, Dr.; Muthusamy, Hariharan, Dr. (Trans Tech Publications, 2013)
      In recent times, vocal fold problems have been increasing dramatically due to unhealthy social habits and voice abuse. Non-invasive methods like acoustic analysis of voice signals can be used to investigate such problems. ...

    • Optimisation of acoustical comfort in vehicle cabin using goal programming 

      Zulkifli, Mohd Nopiah, Prof. Madya Dr.; Ahmad Kadri, Junoh; Ahmad Kamal Ariffin, Mohd. Ihsan, Prof. Dr. (Inderscience Enterprises Ltd., 2013)
      Car cabin acoustical comfort is one of the main features that may attract customers to purchase a new vehicle. The noise in a passenger car cabin is closely related to the vibration generated in the vehicle system. In this ...

    • Optimisation of machining parameters by criterion of maximum productivity 

      Usubamatov, Ryspek, Prof. Dr.; Azmi, Harun; Asmawi, Sanuddin (Taylor & Francis, 2014-05)
      The optimisation of machining parameters for machine tools using the criterion of maximum productivity rate is not a new problem - many unresolved issues remain. The intensification of machining processes leads to changes ...

    • Optimising PCM thermal storage systems for maximum energy storage effectiveness 

      Nasrul Amri, Mohd Amin; Belusko, Martin; Bruno, Frank; Liu, Ming (Elsevier Ltd., 2012-09)
      A new performance parameter for PCM thermal storage systems, the energy storage effectiveness, is defined. This parameter can be used to optimise the design of any PCM thermal storage system to maximise the use of the ...

    • The optimization concept of Service Fulfillment Measurement: a research on Surgery Care 

      Norshahrizan, Nordin; Razli, Che Razak; Sharmini, Abdullah; Ummi Naiemah, Saraih; Marniati; Wan Norsyafawati, W. Muhamad Radzi (EDP Sciences, 2018)
      This paper presents an optimization concept of service fulfillment measurement. Service delivery is assumed free from constraint, while service fulfillment is expected to achieve by maximizing the customer preferences. As ...

    • Optimization of 67% powder loading co-30cr-6Mo μMIM part by Taguchi method 

      Azizah, Wahi; Norhamidi, Muhamad, Prof. Dr.; Hafizawati, Zakaria (Penerbit UTM Press, 2014)
      This research studies the effect of injection moulding parameters on the density of green body of Cobalt-30Chromium-6Molybdenum (Co-30Cr-6Mo) for powder injection moulding (PIM) feedstock. In this paper 20 micron Co-Cr-Mo ...

    • Optimization of alkaline activator / fly ash ratio on the compressive strength of manufacturing fly ash-based geopolymer 

      Mohd Mustafa Al Bakri, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; O. A. K. A., Karem; Che Mohd Ruzaidi, Ghazali, Prof. Madya; Rafizah, Abu Rashid; Norazian, Mohamed Noor (Trans Tech Publications, 2012)
      Fly ash and a mixture of alkaline activators namely sodium silicate (Waterglass) and sodium hydroxide (NaOH) solution were used for preparing geopolymer. The aim of this research is to determine the optimum value of the ...

    • Optimization of circular side door beam for crashworthiness analysis 

      Raja Sharmi, Raja Husin; Nur Liyana, Tajul Lile; Sazali, Yaacob, Prof. Dr. (Indonesian Society for Knowledge and Human Development (INSIGHT), 2012)
      Structural optimization related to crashworthiness and energy absorption capability is particularly importance to the automotive industry. The optimization involves highly nonlinear computational analysis and design with ...

    • Optimization of compacting process for Porous Ti-6Al7Nb alloys with Magnesium as a space holder by using Taguchi Method 

      M. N., Fazlen; R. N., Ahmad; N. I. N., Suhaimi; M.S., Abdul Manan; M., Marzuki (Universiti Malaysia Perlis (UniMAP), 2022-10)
      The optimization of compacting process for porous titanium niobium (Ti-6Al-7Nb) alloys with magnesium as a space holder prepared by powder metallurgy process was studied to analyze the significant porosity required in ...

    • Optimization of complex fermentation media for glucose oxidase production using statistical approach 

      Ahmad Anas, Nagoor Gunny; Dachyar, Arbain, Prof. Madya Dr.; Sithamparam, Logachanthirika (Asian Network for Scientific Information (ANSINET), 2013)
      Production cost of enzyme is largely determined by the type of the strain and raw material used to propagate the strain. Hence, selection of the strain and raw materials is crucial in enzyme production. For Glucose oxidase ...

    • Optimization of Fenton oxidation to treat textile wastewater 

      Zamzury, S. H.; Zulhaimi, H. I. (Universiti Malaysia Perlis (UniMAP), 2019)
      Studies were made to assess the performance and optimal condition of Fenton oxidation in textile wastewater. Three factors considered in this process which were concentration of hydrogen peroxide (H2O2), concentration of ...