Now showing items 299-318 of 322

    • A survey of radiation dose to patients and operators during radiofrequency ablation using computed tomography 

      A., Saidatul; C. A., Azlan; M. S. A., Megat Amin; B. J. J., Abdullah; K. H., Ng (University of MalayaDepartment of Biomedical Imaging (Radiology), 2010-01)
      Computed tomography (CT) fluoroscopy is able to give real time images to a physician undertaking minimally invasive procedures such as biopsies, percutaneous drainage, and radio frequency ablation (RFA). Both operators executing ...
    • A survey on face emotion recognition and applications 

      Muthukaruppan, Karthigayan; Mohd Rizon, Mohamed Juhari; Ramachandran, Nagarajan (Association for the Advancement of Modelling and Simulation Techniques in Enterprises (AMSE), 2007)
      This paper presents a decade long research efforts of recognizing human emotion conveyed through facial expressions (face emotion). Face emotion recognition starts from processing still and video camera images and identifying ...
    • Synthesis of nanoporous carbonated hydroxyapatite using non-ionic pluronics surfactant 

      Nur Farahiyah, Mohammad; Fei, Yee Yeoh; Radzali, Othman, Dr. (Trans Tech Publications, 2013)
      Hydroxyapatite (HA) is a bioceramics that commonly used as bone substitute materials, coating materials and scaffolds in orthopedics. It is well known for its remarkable biocompatibility with natural human tissue. However, ...
    • A systematic dry etching process for profile control of quantum dots and nanoconstrictions 

      Madnarski, Sutikno; Uda, Hashim; Zul Azhar, Zahid Jamal (Elsevier B.V., 2007-08)
      In essence, quantum dot dimensions and others can be laterally and vertically defined by using either bottom up or top down methods respectively. In fabrication that uses top down method, etch process hold a chief role. ...
    • A systematic review of phacoemulsification cataract surgery in virtual reality simulators 

      Chee, Kiang Lam; Sundaraj, Kenneth, Assoc. Prof. Dr.; Mohd Nazri, Sulaiman (Medicina, 2013)
      The aim of this study was to review the capability of virtual reality simulators in the application of phacoemulsification cataract surgery training. Our review included the scientific publications on cataract surgery ...
    • Theoretical approach on vein graft survival: Simulation on vein graft 

      Muhd Nur Rahman, Yahya; Shahriman Abu Bakar, Dr.; Siti Khadijah, Za'aba, Dr.; Sharifah Roohi, Syed Waseem Ahmad; Wan Khairunizam, Wan Ahmad, Dr. (Inderscience Enterprises Ltd., 2013)
      Artery reconstruction in upper extremities is rare performed compared to artery reconstruction in lower extremities. Primary vascular repair was performed in many cases. An interposition vein graft or venous bypass grafting ...
    • Three-axis fuzzy variable structure control with an application to micro satellite 

      Rusli, R.; Nagarajan, R.; Rahim, M.A. (IEEE, 2009-12-10)
      This paper presents a hybrid form of three-axis control system with has both Variable Structure Control (VSC) and Fuzzy Logic Control (FLC). This proposed Fuzzy Variable Structure Control (FVSC) approach combines the power ...
    • Tilt detection of connectors using phase shifting 

      Retnasamy, V.; Mani Maran, Ratnam; Sundaraj, Kenneth; Zaliman, Sauli (International Association of Science and Technology for Development (IASTED)/ACTA Press, 2007)
      AVI's are playing important roles in quality inspection in the electronic industry. Most existing AVIs are single overhead camera and are incapable detecting 3D defects. This work presents solving the shortcoming stated ...
    • Time-domain features and probabilistic neural network for the detection of vocal fold pathology 

      Hariharan, Muthusamy; Paulraj, Murugesa Pandiyan, Prof. Madya; Sazali, Yaacob, Prof. Dr. (Universiti Malaya, 2010)
      Due to the nature of job, unhealthy social habits and voice abuse, people are subjected to the risk of voice problems. It is well known that most of vocal fold pathologies cause changes in the acoustic voice signal. ...
    • Tomographic reconstruction of a multi-attenuation phantom by means of ultrasonic method 

      Mohd Hafiz, Fazalul Rahiman, Dr; Ruzairi, Abdul Rahim, Prof. Dr.; Herlina, Abdul Rahim, Dr. (Springer Science+Business Media B.V., 2012)
      This paper presents a work on tomography reconstruction of a multi-attenuation phantom by means of ultrasonic method. A transmission-mode approach has been used for the sensing modality. The reconstruction has been conducted ...
    • Tracking and replication of hand movements by teleguided intelligent manipulator robot 

      Abadal-Salam Taha, Hussain; Syed Faiz, Ahmed, Dr.; Hazry, Desa, Assoc. Prof. Dr. (Cambridge University Press, 2014-02)
      In this paper, a new method is presented that allows an intelligent manipulator robotic system to track a human hand from far distance in 3D space and estimate its orientation and position in real time with the goal of ...
    • Tribological properties of WS2 nanoparticles lubricants on aluminum-silicon alloy and carbon steels 

      Riyadh A., Al-Samarai; Yarub, Al-Douri, Assoc. Prof. Dr.; Haftirman, Dr.; Khairel Rafezi, Ahmad, Dr. (Walailak University, 2013-06)
      The rheological properties of nanometric tungsten disulphide (WS2) nanoparticles oil lubricants and its tribological performance with two hypereutectic Al-Si alloy and carbon steel are examined. These two oils are used to ...
    • Ultimate elastic wall stress (UEWS) test of glass fibre reinforced epoxy (GRE) pipe 

      Mohd Shukry, Abdul Majid; Assaleh, T. A.; Gibson, A. G.; Hale, J. M.; A., Fahrer; Rookus, C. A. P.; M., Hekman (Elsevier Ltd., 2011-10)
      This paper presents an experimental investigation of the behaviour of filament wound glass fibre reinforced epoxy (GRE) composite pipe under hydrostatic and biaxial load conditions at temperatures up to 95 °C. The format ...
    • Ultrasonic process tomographic imaging sensor: An approach utilising transceivers method 

      Mohd Hafiz, Fazalul Rahiman; Zulkarnay, Zakaria; Ruzairi, Abdul Rahim (Institute of Electrical and Electronics Engineering (IEEE), 2008-05-13)
      Direct analysis of the internal characteristics of process plant has become a widespread need in order to improve the design and operation of the equipment especially in liquid/gas two phase flows. In recent years, the ...
    • Ultrasonic tomography - image reconstruction algorithms 

      Mohd Hafiz, Fazalul Rahiman, Dr; Ruzairi, Abdul Rahim, Prof. Dr.; Herlina, Abdul Rahim, Dr.; Siti Zarina, Mohd Muji; Elmy Johana, Mohamad, Dr (International Journal of Innovative Computing, Information and Control (IJICIC), 2012-01)
      This paper focuses on image reconstruction algorithms for use in ultrasonic tomography. There are three types of algorithms namely Linear Back Projection, Hybrid Reconstruction and Hybrid Binary Reconstruction that are of ...
    • Ultrasonic tomography imaging for liquid-gas flow measurement 

      Muhammad Jaysuman, Pusppanathan; Nor Muzakkir, Nor Ayob; Fazlul Rahman, Mohd Yunus; Khairul Hamimah, Abbas; Herlina, Abdul Rahim, Dr.; Loew,  Pei Ling, Dr.; Ruzairi, Abdul Rahim, Prof. Dr. ; Fatin Aliah, Phang Abdullah, Dr.; Mohd Hafiz, Fazalul Rahiman, Dr.; Zulkarnay, Zakaria (International Frequency Sensor Association (IFSA), 2013)
      This research was carried out to measure two-phase liquid - gas flow regime by using a dual functionality ultrasonic transducer. Comparing to the common separated transmitter-receiver ultrasonic pairs transducer, the dual ...
    • Ultrasonic tomography imaging simulation of two-phase homogeneous flow 

      Mohd Hafiz Fazalul, Rahiman; Zulkarnay, Zakaria; Ruzairi, Abdul Rahim; Wei, Nyap Ng (Emerald Group Publishing Limited, 2009-09)
      Purpose - The purpose of this paper is to present an implementation of ultrasonic tomography simulation to investigate the laminar flow of stratified liquid between water and oil. Design/methodology/approach - The velocity ...
    • Uncertainty modeling in the prediction of effective mechanical properties using stochastic homogenization method with application to porous trabecular bone 

      Khairul Salleh, Basaruddin; Takano, Naoki; Akiyama, Hikaru; Nakano, Takayoshi (The Japan Institute of Metals and Materials, 2013)
      A systematic modeling of uncertainty due to image processing, material characteristics and experimental works was developed in order to propose a novel stochastic image-based multi-scale method for heterogeneous media. The ...
    • The use of dielectric mixture equations to analyze the dielectric properties of a mixture of rubber tire dust and rice husks in a microwave absorber 

      Cheng, Ee Meng; Mohd Fareq, Abd Malek, Dr.; Manjur Murshed Zahid, Ahmed; You, Kok Yeow; Lee, K. Y.; Nornikman, H. (Progress in Electromagnetics Research (PIER), 2012)
      A change in the relative proportions of a mixture of rubber tire dust and rice husks will cause a change in the mixture's electrical permittivity and its ability to absorb electromagnetic energy. An openended coaxial probe ...
    • Vibration analysis of blocked circular pipe flow 

      Nur Liyana, Tajul Lile; Muhammad Hasnulhadi, Mohammad Jaafar; M. R., Roslan (Trans Tech Publications (TTP), 2012)
      Pipes are found in almost all buildings and constructions where they are used to convey fluid to a desired location. Liquid containing foreign objects and impurities will sometimes creates unintentional built up or clog ...