Browsing Mohd Hafiz Fazalul Rahiman, Associate Professor Ir.Dr. by Title

Now showing items 20-39 of 69

    • 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 ...

    • Oil Contamination Detection System (OCDS) 

      Mohd Hafiz, Fazalul Rahiman; Abd. Haqi, Ibrahim; Mohd Taufik, Jusoh@Tajudin; Soh, Ping Jack; Ahmad Firdaus, Ahmad Zaidi (Malaysian Invention and Design Society (MINDS), 2007-05-18)
      Oil Contamination Detection System (OCDS) is a novel and cost effective invention for illegal oil and grease emissions monitoring. OCDS will be immersed partially in the water by using a float.

    • Optical tomography hardware development for solid gas measurement using mixed projection 

      Siti Zarina, Mohd Muji; Chiew, Loon Goh; Nor Muzakkir, Nor Ayob; Ruzairi, Abdul Rahim, Prof. Dr. ; Mohd Hafiz, Fazalul Rahiman, Dr.; Herlina, Abdul Rahim, Dr.; Muhammad Jaysuman, Pusppanathan; Naizatul Shima, Mohd Fadzil (Elsevier Ltd, 2013-10)
      The ability to implement fan beam projection in parallel view in an optical tomography setup is one of the novelties of this research. This design involves a sensor jig specifically designed for parallel applications that ...

    • Optical tomography system based on charge-coupled device linear image sensors: Particle size measurement 

      Idroas, M.; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Ibrahim, M. N. (Elsevier B.V, 2011-08)
      This paper discussed an optical tomography system based on charge-coupled device (CCD) linear image sensors. The developed system consists of a lighting system, a measurement section and a data acquisition system. Four CCD ...

    • Optical tomography system based on charge-coupled device linear image sensors: Particle size measurement 

      Mariani, Idroas; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; M. N., Ibrahim (Elsevier B.V., 2011-08)
      This paper discussed an optical tomography system based on charge-coupled device (CCD) linear image sensors. The developed system consists of a lighting system, a measurement section and a data acquisition system. Four CCD ...

    • An optical tomography system using a digital signal processor 

      Ruzairi, Abdul Rahim; Chiam, Kok Thiam; Mohd Hafiz, Fazalul Rahiman (Molecular Diversity Preservation International (MDPI), 2008-03)
      The use of a personal computer together with a Data Acquisition System (DAQ) as the processing tool in optical tomography systems has been the norm ever since the beginning of process tomography. However, advancements in ...

    • Optical tomography system using digital signal processor: Velocity profile measurement 

      Ruzairi, Abdul Rahim; Chiam, Kok Thiam; Mohd Hafiz, Fazalul Rahiman; Yvette-Shan Li, Susiapan; Jayasuman, P. (Inderscience Enterprises Limited, 2009-06)
      The DSP system was customised to control the data acquisition process of 16 x 16 optical sensors array, arranged in parallel beam projection. The data collected was used to reconstruct the cross sectional image of the ...

    • Optical tomography system: Application of Charge Coupled Device (CCD) for solid and transparent objects detection 

      Juliza, Jamaludin; Ruzairi, Abdul Rahim; Herlina, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Siti Zarina, Mohd Muji; Mohd Fahjumi, Jumaah; Naizatul Shima, Mohd Fadzil; Chan, Kok San; Green, R.G. (Penerbit UTM Press, 2016)
      This research presents an application of Charge Coupled Device (CCD) linear sensor and laser diode in an optical tomography system. These optoelectronic sensors are believed to detect solid objects rather than transparent ...

    • Optical tomography: A review on sensor array, projection arrangement and image reconstruction algorithm 

      Siti Zarina, Mohd. Muji; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Shafishuhaza, Sahlan; Mohd Fadzli, Abdul Shaib; Muhammad, Jaysuman; Elmy Johana, Mohamad (Kyushu Tokai University, 2011-07)
      This paper reviews previous research on sensor arrays, projection arrangements and image reconstruction algorithms of optical tomography for industrial processes. These include the review of sensor selection and projection ...

    • 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 ...