Now showing items 10-29 of 69

    • Edge detection algorithm for enhancement of linear back projection tomographic images 

      Muhammad Jaysuman, Pusppanathan; Mahdi Faramarzi; Fazlul Rahman, Mohd Yunus; Nor Muzakkir, Nor Ayob; Ruzairi, Abdul Rahim, Prof. Dr.; Fatin Aliah, Phang Abdullah, Dr.; Usman Ullah, Sheikh, Dr.; Loew,  Pei Ling, Dr.; Khairul Hamimah, Abas; Mohd Hafiz, Fazalul Rahiman, Dr.; Shafishuhaza, Sahlan (Penerbit UTM Press, 2014)
      Process tomography (PT) is a leading technique for multiphase flow measurement and flow monitoring systems in various fields. PT has the advantage of interpreting acquired measurement data and transforming it into visual ...
    • Electrical resistance tomography: a review of the application of conducting vessel walls 

      Suzanna, Ridzuan Aw; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Fazlul Rahman, Mohd Yunus; Goh, Chiew Loon (Elsevier, 2014-03)
      Despite decades of research, the study on tomography continues to be a subject of great scientific interest. Amongst all the kinds of tomography available, electrical resistance tomography (ERT) has been chosen as the field ...
    • FPGA technology in process tomography 

      Lean, Thiam Siow; Mohd Hafiz, Fazalul Rahiman; Ruzairi, Abdul Rahim; Mohd Shukry, Abdul Majid; Salman Sayyidi, Hamzah; Nur Atikah, Mat Ali; Vernoon, Ang Wei Neng; Syafiqah, Ishak; Thomas, Tan Wan Kiat (Penerbit UTM Press, 2016)
      The aims of this paper are to provide a review of the process tomography applications employing field programmable gate arrays (FPGA) and to understand current FPGA related researches, in order to seek for the possibility ...
    • The front-end hardware design issue in ultrasonic tomography 

      Mohd. Hafiz, Fazalul Rahiman; Rahim, R. A.; Mohd Nasir, Ayob (IEEE, 2010-07)
      This paper explains the front-end hardware design for ultrasonic tomography. The ultrasonic tomography system presented in this paper uses a noninvasive sensing technique with transmission-mode approach for investigating ...
    • Gas hold-up profiles determination by means of ultrasonic transducer 

      Mohd Hafiz, Fazalul Rahiman, Dr.; Ruzairi, Abdul Rahim, Prof. Dr. ; Herlina, Abdul Rahim, Dr.; Zulkarnay, Zakaria; Muhammad Jaysuman, Pusppanathan; Goh, Chiew Loon; Nasarudin, Ahmad; Yasmin, Abdul Wahab; Fazlul Rahman, Mohd Yunus (Penerbit UTM Press, 2014)
      This paper details a work carried out to measure gas hold-up profiles in a liquid column using a pair of ultrasonic transducer. The gas hold-up profiles from 1.85 mm to 7.7 mm diameter are of interest in this investigation. ...
    • Gas hold-up profiles measurement using ultrasonic sensor 

      Mohd Hafiz, Fazalul Rahiman; Ruzairi, Abdul Rahim, Prof. Dr.; Herlina, Abdul Rahim, Dr. (Institute of Electrical and Electronics Engineers (IEEE), 2011-02)
      In this letter, we present a work carried out to measure gas hold-up profiles in a liquid column using a pair of ultrasonic sensors. The gas hold-up profiles from 1.85 to 7.7 mm in diameter are of interest in this ...
    • The hardware design technique for ultrasonic process tomography system 

      Mohd Hafiz, Fazalul Rahiman, Dr.; Ruzairi, Abdul Rahim, Prof. Dr.; Herlina, Abdul Rahim, Dr.; Nor Muzakkir, Nor Ayob (International Frequency Sensor Association Publishing (IFSA), 2012-06)
      This paper describes a work carried out to design and development an ultrasonic process tomography system. The hardware design technique is of interest of this paper. A number of 32-ultrasonic transducers have been ...
    • Hardware developments of an ultrasonic tomography measurement system 

      Hudabiyah, Arshad Amari; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Herlina, Abd Rahim; Pusppanathan, Muhammad Jaysuman (International Frequency Sensors Association (IFSA), 2011-01)
      This research provides new technique in ultrasonic tomography by using ultrasonic transceivers instead of using separate transmitter-receiver pair. The numbers of sensors or transducers used to acquire data plays an important ...
    • Hardware implementation of multiple fan beam projection technique in optical fibre process tomography 

      Ruzairi, Abdul Rahim; Mohd Hafiz Fazalul, Rahiman; Lai, Chen Leong; Kok, San Chan; Jon, Fea Pang (Molecular Diversity Preservation International (MDPI), 2008-05)
      The main objective of this project is to implement the multiple fan beam projection technique using optical fibre sensors with the aim to achieve a high data acquisition rate. Multiple fan beam projection technique here ...
    • Homogeneous and Non-homogeneous media indentification and circuitry design of multiphase Ultrasonic Tomography 

      Mohd Rizal, Manan; Mohd Hafiz, Fazalul Rahiman; Sazali, Yaacob; Ruzairi, Abdul Rahim (Universiti Malaysia Perlis, 2009-10-11)
      Multiphase flow characterization is an important task for monitoring, measuring or controlling industrial processes. This can be done by means of process tomography. The use of tomographic techniques has been used within ...
    • Image fusion using fuzzy logic pixel fusion for dual modality tomography system 

      Muhammad Jaysuman, Pusppanathan; Mahdi Faramarzi; Fazlul Rahman, Mohd Yunus; Nor Muzakkir, Nor Ayob; Ruzairi, Abdul Rahim, Prof. Dr. ; Fatin Aliah, Phang Abdullah, Dr.; Mohd Hafiz, Fazalul Rahiman, Dr.; Anita, Ahmad, Dr.; Loew,  Pei Ling, Dr.; Khairul Hamimah, Abas (Penerbit UTM Press, 2014)
      Process tomography has been widely investigated and developed over time. The aim of this method is to measure the cross-sectional distribution of multiphase flow parameters based on its sensing technique. These single ...
    • Initial study on optical fiber array to produce particle size information for hydraulic process 

      Yusri, Md. Yunos; Ruzairi, Abdul Rahim; Siti Zarina, Mohd Muji; Mohd Hafiz Fazalul Rahiman, Dr.; Muhammad Jaysuman, Pusppanathan (Springer Berlin Heidelberg, 2013-08)
      This paper presents the results of investigations carried out to determine the feasibility of using optical fibers to produce particle size information of hydraulic processes. The results have been obtained using a static ...
    • An introduction of two differential excitation potentials technique in electrical capacitance tomography 

      Elmy Johana, Mohamad, Dr.; Ruzairi, Abdul Rahim, Prof. Dr.; Leow, Pei Ling, Dr.; Mohd Hafiz Fazalul, Rahiman, Dr.; Omar Mohd Faizan, Marwah; Nor Muzakkir, Nor Ayob; Herlina, Abdul Rahim, Dr.; Fazlul Rahman, Mohd Yunus (Elsevier B.V., 2012-06)
      The investigation of this work is to analyse the sensitivity distributions using single and two differential excitation potentials techniques in order to improve the situation of: (1) non-uniform sensitivity distribution; ...
    • Jaundice assessement of newborn baby: A short review on Kramel’s Rule and magnetic induction spectroscopy 

      Maliki, Ibrahim; Zulkarnay, Zakaria; Jurimah, Abd Jalil; Shazwani, Sarkawi; Balkhis, Ibrahim; Mohamad Aliff, Abd Rahim; Nazahah, Mustafa; Mohd Hafiz Fazalul, Rahiman; Abdul Ruzairi, Abdul Rahim (Penerbit UTM Press, 2015-04)
      Jaundice is a yellow discolouration of white eyes (sclera), skin and mucous membrane which is clinically apparent when the level of serum bilirubin rises up to 5 mg/dl. Jaundice could cause abnormalities in the newborn ...
    • Mathematical modelling of gas bubbles and oil droplets in liquid media using optical linear path projection 

      Ruzairi, Abdul Rahim; Yusri, Md Yunos; Mohd Hafiz, Fazalul Rahiman; Herlina, Abdul Rahim (Elsevier Ltd., 2010-05-05)
      This paper describes mathematical modelling of oil droplets and gas bubbles in water. The light sources that are discussed are visible light radiation and infrared radiation. Gas bubbles or oil droplets less than 1 mm ...
    • Measurement of the content of water using light penetration 

      Mohd Fahajumi, Jumaah; Mohd Zikrillah, Zawahir; Fazlul Rahman, Mohd Yunus; Ruzairi, Abdul Rahim, Prof. Dr.; Nor Muzakkir, Nor Ayob; Muhammad Saiful Badri, Mansor; Naizatul Shima, Fadzil; Zulkarnay, Zakaria; Mohd Hafiz, Fazalul Rahiman, Dr.; Mohd Ramzam, Abdul Manaf (Penerbit UTM Press, 2014)
      In this paper we use an electronic component to produce light which is applied in testing soft tissue penetration. We used bio tissue, a slice of apple, and non-bio tissue, paper. The voltage could be adjusted to brighten ...
    • Modeling orthogonal and rectilinear mixed-modality projection of optical tomography for solid-particles concentration measurement 

      Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Goh, C. L.; Muji, S. Z. M.; Rahim, H. A.; Yunos, Y. M. (Elsevier B. V., 2010-06)
      In optical tomography, light attenuation/scattering methods have been used to determine average solids concentrations in gas-solids flows. Derived from the Lambert-Beer law, the Mie theory forms the theoretical basis for ...
    • Modelling ultrasonic sensor for gas bubble profiles characterization of chemical column 

      Mohd Hafiz, Fazalul Rahiman, Dr.; Ruzairi, Abdul Rahim, Prof. Dr. ; Herlina, Abdul Rahim, Dr.; Nor Muzakkir, Nor Ayob; Elmy Johana, Mohamad, Dr.; Zulkarnay, Zakaria (Elsevier B.V., 2013)
      In this paper, we present a modelling and experimental work to characterize gas bubble profiles in chemical column using a pair of ultrasonic sensor. The gas bubble profiles from 2.90 mm to 7.50 mm diameter are of interest ...
    • Multiphase ultrasonic tomography technique for homogeneous and Non-homogeneuos media identification 

      Mohd Rizal, Manan; Mohd Hafiz, Fazalul Rahiman; Sazali, Yaacob; Zulkarnay, Zakaria; Ruzairi, Abdul Rahim (Intel Tech Sdn. Bhd./Pac Tech Sdn. Bhd./Universiti Sains Malaysia (USM), 2009)
      Multiphase flow characterization is an important task for monitoring, measuring or controlling industrial processes. This can be done by means of process tomography. The use of tomographic techniques has been used within ...
    • Novel adjacent criterion method for improving ultrasonic imaging spatial resolution 

      Mohd Hafiz, Fazalul Rahiman, Dr; Ruzairi, Abdul Rahim, Prof. Dr.; Herlina, Abdul Rahim, Dr.; Nor Muzakkir, Nor Ayob (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      In this letter, we present a novel approach for improving spatial resolution in ultrasonic tomography. The proposed technique modifies a Back-projection (BP) algorithm in reconstructing tomography images. We used 32-ultrasonic ...