Browsing by Author "Ismail I."
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Publication Automated feature description of follicle size in assisted reproductive treatment(Penerbit UTHM, 2018) ;Sahrim M. ;Rahman U.S.A. ;Wan Zakiah Wan Ismail ;Ismail I. ;Jamaludin J. ;Balakrishnan S.R. ;Faculty of Engineering and Built EnvironmentUniversiti Sains Islam Malaysia (USIM)In assisted reproductive treatment, monitoring of follicular size using serial ultrasound is essential to access ovarian response. Traditional method requires doctors to measure the follicle size manually which will lead to inaccurate findings. As for more consistent and reliable parameter of follicular growth, an automated feature description may offer better accuracy in estimating to the response. In this study, by using two-dimensional ultrasound to acquire data from the ovaries, the ultrasound result will indicate the feature description automatically without manual calculation. This automated feature description is developed based on image processing technique using canny edge-detection method in MATLAB. It provides the analysis of the features based on area, perimeter, compactness, major and minor axis and centroid dataset to identify the follicle size. � Penerbit UTHM. - Some of the metrics are blocked by yourconsent settings
Publication Automated Feature Description of Follicle Size in Assisted Reproductive Treatment(Univ Tun Hussein Onn Malaysia, 2018) ;Sahrim, M ;Rahman, USA ;Wan Zakiah Wan Ismail ;Ismail I. ;Jamaludin J.Balakrishnan, SRIn assisted reproductive treatment, monitoring of follicular size using serial ultrasound is essential to access ovarian response. Traditional method requires doctors to measure the follicle size manually which will lead to inaccurate findings. As for more consistent and reliable parameter of follicular growth, an automated feature description may offer better accuracy in estimating to the response. In this study, by using two-dimensional ultrasound to acquire data from the ovaries, the ultrasound result will indicate the feature description automatically without manual calculation. This automated feature description is developed based on image processing technique using canny edge-detection method in MATLAB. It provides the analysis of the features based on area, perimeter, compactness, major and minor axis and centroid dataset to identify the follicle size - Some of the metrics are blocked by yourconsent settings
Publication Automated Motion Detection Security System Notifier using Raspberry Pi with Telegram(Institute of Electrical and Electronics Engineers Inc., 2020) ;Hazri I.M. ;Mus'ab Sahrim ;Wan Zakiah Wan Ismail ;Ismail I. ;Rahman S.A.Hussin F.S.Technology is a double-edged sword when it changes the way we perform everyday activities for the better. Unfortunately, misfits will always find new ways to misuse technology to facilitate their misdeeds. CCTV are great security measures that can be used to catch culprits in action, but other than banks, hospitals, shopping malls, academic institutes etc., a CCTV solution is beyond most household budgets and require continuous monitoring. Because mobile phones are the primary hand-held device, it is only logical to integrate these with a CCTV solution. Motion Detection Security System Notifier using Raspberry Pi with Telegram is as the name suggests. Using Raspberry Pi, a motion detection system is developed through the method of background subtraction, which works by subtracting the static from the background frame from the constantly changing foreground. The change of value in noise and pixel density between the background frame and the foreground indicates motion. Each time a motion is detected, the system will automatically send the frame to the user via Telegram to notify that there has been movement in the area as captured in the frames. A prototype is first developed in a virtual environment using VirtualBox software before running it on the Raspberry Pi. This paper will show the relevance of the project. � 2020 IEEE. - Some of the metrics are blocked by yourconsent settings
Publication Automatic feature description of endometrioma in ultrasonic images of the ovary(Penerbit UTHM, 2018) ;Sahrim M. ;Aziz A.N.A. ;Wan Zakiah Wan Ismail ;Ismail I. ;Jamaludin J. ;Balakrishnan S.R. ;Faculty of Engineering and Built EnvironmentUniversiti Sains Islam Malaysia (USIM)Endometriosis cyst or endometrium is commonly found in women with subfertility. Traditionally, medical technologies fail to detect the disease automatically and it is fully dependent on the doctors to determine the peritoneal disease where it may lead to inaccurate findings. A method of assessment may give more accurate detection without the need for surgical procedure, especially in monitoring disease recurrence. This will avoid surgical risk and will not delay the management. In this study, the feature description is developed using pattern recognition, involving image processing techniques; the ultrasonic images is used as input in which the region of interest of images, image segmentation, feature extraction are studied. � Penerbit UTHM. - Some of the metrics are blocked by yourconsent settings
Publication Automatic feature description of Endometrioma in Ultrasonic images of the ovary(Univ Tun Hussein Onn Malaysia, 2018) ;Sahrim, M ;Aziz, ANA ;Wan Zakiah Wan Ismail ;Ismail I. ;Jamaludin J.Balakrishnan, SREndometriosis cyst or endometrium is commonly found in women with subfertility. Traditionally, medical technologies fail to detect the disease automatically and it is fully dependent on the doctors to determine the peritoneal disease where it may lead to inaccurate findings. A method of assessment may give more accurate detection without the need for surgical procedure, especially in monitoring disease recurrence. This will avoid surgical risk and will not delay the management. In this study, the feature description is developed using pattern recognition, involving image processing techniques; the ultrasonic images is used as input in which the region of interest of images, image segmentation, feature extraction are studied - Some of the metrics are blocked by yourconsent settings
Publication Comparative study of single- and double-layer BaFe12O19-Graphite nanocomposites for electromagnetic wave absorber applications(Pergamon-Elsevier Science Ltd, 2020) ;Ismail I. ;Ibrahim I.R. ;Matori K.A. ;Awang Z. ;Muhammad Zulkimi M.M. ;Mohd Idris F. ;Nazlan R. ;Azis R.S. ;Mohd Zaid M.H. ;Rusly S.N.A. ;Ertugrul M. ;GENIUS Insan College ;Universiti Putra Malaysia (UTM) ;Universiti Putra Malaysia (UPM) ;Universiti Teknologi MARA (UiTM) ;Universiti Sains Islam Malaysia (USIM) ;Universiti Malaysia Pahang (UMP)Ataturk UniversityThe development of stealth technology for military applications and increasing concerns of electromagnetic pollution have garnered interest to design microwave absorbing materials with wide absorption bandwidth and effective absorption properties. Two batches of samples as a potential radar absorbing material were prepared in this study: single-layer and double-layer nanocomposite mixtures of graphite and barium hexaferrite nanoparticles. Characterizations of electromagnetic and microwave absorbing properties were carried out in the frequency range of 8?12 GHz (X-band) and 12?18 GHz (Ku-band). Single-layer samples with thickness of 2 mm showed optimal absorption properties with minimum reflection loss of -20.5 dB at 11.8 GHz for X-band and -20.7 dB at 14.7 GHz for Ku-band, displaying bandwidths of 0.6 GHz for the former and 3.8 GHz for the latter at -10 dB. On the other hand, double-layer samples made of 1 mm thick barium hexaferrite matching layer and 2 mm thick graphite absorbing layer showed optimal absorption properties with minimum reflection loss of -30.0 dB at 9.2 GHz for X-band with narrower bandwidth of 0.6 GHz. The microwave absorption properties of these nanocomposites were attributed to combined effect of dielectric loss from graphite and magnetic loss from ferrite. - Some of the metrics are blocked by yourconsent settings
Publication Design and fabrication of polydimethylsiloxane based low cost microfluidic for ultra-fast diagnostic applications(Penerbit UTHM, 2018) ;Balakrishnan S.R. ;Hashim U. ;Sahrim M. ;Ismail I. ;Jamaludin J. ;Ismail W.Z.W. ;Perumal V. ;Haarindraprasad R. ;Mahalingam S. ;Faculty of Engineering and Built Environment ;Universiti Sains Islam Malaysia (USIM) ;Universiti Malaysia Perlis (UniMAP) ;Universiti Teknologi PETRONAS (UTP) ;AIMST UniversityUniversiti Tenaga Nasional (UNITEN)Diagnostic tools such as Point-of-Care (POC) analysis usually requires an on-site testing and measurements. Hence, to ease the fluid sample handling, microfluidics technology has been opted frequently to be incorporated with lab-on-chip (LOC). Therefore, an easy and conventional method of design and fabrication of the microfluidic device implemented. In this study, the device is fabricated with Polydimethylsiloxane (PDMS) and SU-8 using soft lithography technique. Herein, we focus on fluid transportation which is applied in clinical diagnostics and the transfer rate to the desired position as well as the fluid leakage during the transportation. Hence, the microfluidic sample transport channeling provides a practical solution for POC technological advances to study the biological systems that yield a better result in quantitative measurements and providing researchers new tools for life science research. � Penerbit UTHM. - Some of the metrics are blocked by yourconsent settings
Publication Enhancing performance of orthogonal frequency division multiplexing (OFDM) based on fast fourier transform (FFT) in wireless communication system(Blue Eyes Intelligence Engineering and Sciences Publication, 2019) ;Ismail A.N. ;Wan Zakiah Wan Ismail ;Aziz N.A.A. ;Hamzah N.A.A. ;Ismail I. ;Faculty of Engineering and Built Environment ;Universiti Sains Islam Malaysia (USIM)Multimedia UniversityOrthogonal Frequency Division Multiplexing (OFDM) is one of the multicarrier transmission techniques used in wireless communication system. It has many benefits such as robust in channel fading and has high spectral density. The main objective of OFDM implementation in wireless communication system is to achieve less or zero Bit Error Rate (BER). However, OFDM design complexity, requirement and selection of the suitable modulation method are among the current issues. Thus, this paper aims to investigate the performance of OFDM in wireless communication by developing two OFDM based system designs. The transmitter, channel and receiver are designed based on OFDM system principles. Forward Error Correction (FEC) method is applied to reduce the BER. Both OFDM designs produce less BER with zero BER for the second OFDM design. The investigation study shows that the performance of OFDM can be enhanced by applying Fast Fourier Transform (FFT) technique. Zero BER can be achieved if the suitable modulation scheme is applied in the system. The developed designs are not complex, suitable to be applied for IEEE 802.11 standard. The BER performance can be influenced by the types of channels, signal to noise ratio (SNR) and various modulation schemes. Thus, this study can be used as a guidance to implement the OFDM in the current or future wireless communication system. � BEIESP. - Some of the metrics are blocked by yourconsent settings
Publication Influence of different BFO filler content on microwave absorption performances in BiFeO3/epoxy resin composites(Elsevier Ltd, 2020) ;Rusly S.N.A. ;Ismail I. ;Matori K.A. ;Abbas Z. ;Shaari A.H. ;Awang Z. ;Ibrahim I.R. ;Idris F.M. ;Mohd Zaid M.H. ;Mahmood M.K.A. ;Hasan I.H. ;PERMATA Insan College ;Universiti Putra Malaysia (UPM) ;Universiti Teknologi MARA (UiTM)Universiti Sains Islam Malaysia (USIM)Multiferroic BiFeO3 (BFO) has garnered interest in recent years due to its magneto-electric coupling between ferroelectric and magnetic ordering. This unique property offers some advantages when applied as electromagnetic (EM) wave absorbers. In work reported here, the microwave absorption properties of multiferroic BFO/epoxy resin composites with different weight percentage (wt%) of BFO fillers of various thicknesses were investigated. The BFO powders were synthesized using high energy ball milling (HEBM) and sintered at 775 °C in a furnace with an ambient air condition. The sintered BFO powders with different weight ratios (50 wt%, 60 wt% and 70 wt%) were mixed with epoxy resin as a matrix to form a composite with thicknesses of 1, 2 and 3 mm. Phase identification, grain size and morphology, magnetic and microwave absorption properties of prepared samples were characterized. The absorption performances of samples were measured in the frequency range of 8–18 GHz. As a result, the compressed BFO powders and BFO/epoxy resin composites with 50–70 wt% BFO filler showed dual-band microwave absorption resonance behavior. The best performances were demonstrated by a 3 mm thick BFO70 composite sample which exhibited a primary reflection loss (RL1) of −26.0 dB at 9.1 GHz and a secondary reflection loss (RL2) of −40.5 dB at 11.3 GHz, along with an associated −10 dB bandwidth of 1.31 GHz. The minimum reflection loss (RL) peaks were shifted to a lower frequency as the thicknesses were increased due to theλ4 condition. Theoretical studies on the absorbing wave mechanism reveal a unique combination of dielectric loss relaxations and antiferromagnetic resonance effects in the BFO absorbers. - Some of the metrics are blocked by yourconsent settings
Publication Influence of different BFO filler content on microwave absorption performances in BiFeO3/epoxy resin composites(Elsevier Ltd, 2020) ;Rusly S.N.A. ;Ismail I. ;Matori K.A. ;Abbas Z. ;Shaari A.H. ;Awang Z. ;Ibrahim I.R. ;Idris F.M. ;Mohd Zaid M.H. ;Mahmood M.K.A. ;Hasan I.H. ;PERMATA Insan College ;Universiti Putra Malaysia (UPM) ;Universiti Teknologi MARA (UiTM)Universiti Sains Islam Malaysia (USIM)Multiferroic BiFeO3 (BFO) has garnered interest in recent years due to its magneto-electric coupling between ferroelectric and magnetic ordering. This unique property offers some advantages when applied as electromagnetic (EM) wave absorbers. In work reported here, the microwave absorption properties of multiferroic BFO/epoxy resin composites with different weight percentage (wt%) of BFO fillers of various thicknesses were investigated. The BFO powders were synthesized using high energy ball milling (HEBM) and sintered at 775 °C in a furnace with an ambient air condition. The sintered BFO powders with different weight ratios (50 wt%, 60 wt% and 70 wt%) were mixed with epoxy resin as a matrix to form a composite with thicknesses of 1, 2 and 3 mm. Phase identification, grain size and morphology, magnetic and microwave absorption properties of prepared samples were characterized. The absorption performances of samples were measured in the frequency range of 8–18 GHz. As a result, the compressed BFO powders and BFO/epoxy resin composites with 50–70 wt% BFO filler showed dual-band microwave absorption resonance behavior. The best performances were demonstrated by a 3 mm thick BFO70 composite sample which exhibited a primary reflection loss (RL1) of −26.0 dB at 9.1 GHz and a secondary reflection loss (RL2) of −40.5 dB at 11.3 GHz, along with an associated −10 dB bandwidth of 1.31 GHz. The minimum reflection loss (RL) peaks were shifted to a lower frequency as the thicknesses were increased due to theλ4 condition. Theoretical studies on the absorbing wave mechanism reveal a unique combination of dielectric loss relaxations and antiferromagnetic resonance effects in the BFO absorbers. - Some of the metrics are blocked by yourconsent settings
Publication Magnetic phase transition of mechanically alloyed single sample Co0.5Ni0.5Fe2O4(Elsevier B.V., 2019) ;Low Z.H. ;Ismail I. ;Shafie M.S.E. ;Ibrahim I.R. ;Ertu?rul M. ;Azis R.S. ;Mohd Saiden N. ;Hasan I.H. ;Mohd Idris F. ;Nazlan R. ;PERMATA Insan College ;Universiti Putra Malaysia (UPM) ;Ataturk University ;Universiti Sains Islam Malaysia (USIM)Universiti Malaysia Pahang (UMP)The parallel evolutional relationship between microstructural properties and magnetic and electrical properties was elucidated through this study. A Co0.5Ni0.5Fe2O4 rod sample was prepared via high energy ball milling and subsequent moulding into a nano-sized compacted powder. This single sample was sintered through 10 cycles at different sintering temperatures in the range of 500 °C–1400 °C. After each sintering, the sample was characterized for its phase, microstructural, density, magnetic and electrical properties using XRD, SEM, B-H tracer, Curie temperature measurement and two probes method. An integrated study of microstructural properties with elevating sintering temperature would point to the existence of three stages of sintering, which involved atomic, interfaces (lattice and boundaries), and volume diffusions respectively. Three distinct shape-differentiated groups of B–H hysteresis loops were observed. The existence of these groups was associated with microstructural properties such as phase purity, volume fraction of disordered phase or grain boundaries, and grain size. In terms of average grain size, from 48.25 nm to 71.93 nm, a weak paramagnetic behaviour was observed; while from 83.65 nm to 374.79 nm, a relatively square-shaped hysteresis loops with moderate ferromagnetic behaviours were observed. The occurrences of erect and well-defined sigmoid-shape were observable when there were sufficiently high single-phase purity and crystallinity, where the average grain size was in the range of 964.73 nm–11215.91 nm. The critical grain size of 186.75 nm was found by plotting average grain size against coercivity, suggesting the number of single-domain particles was reduced, and the number of multi-domain particles was increased by increasing sintering temperature. The electrical resistivity variations were strongly related to the microstructural properties. - Some of the metrics are blocked by yourconsent settings
Publication Monte Carlo Simulation of Optical Light Transport in an Absorption-Based Tapered Fiber Sensor(Institute of Electrical and Electronics Engineers Inc., 2020) ;Mustafa F.H. ;Suhailin F.H. ;Ismail I.Mahdi M.A.B.Monte Carlo simulation of an optical light propagation in a developed tapered multimode fiber sensor for the detection of salinity solution is demonstrated. The effect of the changes of the length of the sodium chloride in the tapered fiber region as a function of the concentration/absorption coefficient on the absorbance response are observed. Results showed the linear relationship of the absorbance with the length of the sensing solution as well as with the absorption coefficient. The sensitivity of the system is calculated to be less than 0.0058 a.U/mm. The findings exhibited the potential of the Monte Carlo simulation as a platform for a preliminary study of tapered fiber sensor applications. � 2020 IEEE. - Some of the metrics are blocked by yourconsent settings
Publication Principles and characteristics of random lasers and their applications in medical, bioimaging and biosensing(American Institute of Physics Inc., 2020) ;Kamil N.A.I.M. ;Ismail W.Z.W. ;Ismail I. ;Balakrishnan S.R. ;Sahrim M. ;Jamaludin J. ;Marinah Othman ;Suhaimi S. ;Faculty of Science and Technology ;Faculty of Engineering and Built EnvironmentUniversiti Sains Islam Malaysia (USIM)A random laser is an optical device that depends on multiple light scattering and gain to provide the feedback mechanism and light amplification respectively. A random laser is different with a regular laser where the regular laser needs a cavity for the feedback mechanism. Multiple light scattering can be considered detrimental in the regular laser but in the random laser, multiple light scattering can increase the path length of light in the active medium. This article studies the operation principles and characteristics of random lasers including the history and applications of the lasers. The theories of light scattering and light amplification are properly explained, followed by a discussion on characteristics of random lasers in terms of random laser emission, emission linewidth and coherence. Furthermore, the unique characteristics of random lasers can contribute to many applications leading to promising element for the future medical and biosensing development. - Some of the metrics are blocked by yourconsent settings
Publication Raman amplifier-soliton compressor and its application to all-channel hybrid OTDM demultiplexing(Institute of Electrical and Electronics Engineers Inc., 2015) ;Ismail I. ;Matsuura M. ;Kishi N. ;Nguyen-The Q. ;Faculty of Science and Technology ;University of Electro-Communications ;Universiti Sains Islam Malaysia (USIM)Le Quy Don Technical UniversityAn all-optical demultiplexing of 40-Gb/s hybrid OTDM channels by using Raman-amplifier-soliton-compressor-flexible control-window is demonstrated. Error-free operations with less than 1.3-dB power penalties were obtained and this scheme is expected to be scalable toward higher bit-rates. � 2015 IEEE. - Some of the metrics are blocked by yourconsent settings
Publication Solution For Nonlinear Riccati Equation By Block Method(Amer Inst Physics, 2018) ;Rasedee, AFN ;Ijam, HM ;Sathar, MHA ;Ishak, N ;Hamzah, SR ;Sahrim, MIsmail I.A two-point block backward difference technique is established for solving nonlinear Riccati differential equations directly. The proposed method is coded using a variable order step size (VOS) algorithm. The advantage of the two-point block method is its programmability to implement parallel programming techniques. Combination of the block method and VOS algorithm allows for a significant reduction of computation cost in comparison to conventional methods. With an added advantage of the recursive relationship between integration coefficients of different orders, the proposed two-point block method provides efficient computation without loss of accuracy. - Some of the metrics are blocked by yourconsent settings
Publication Solution for nonlinear Riccati equation by block method(American Institute of Physics Inc., 2018) ;Rasedee A.F.N. ;Ijam H.M. ;Sathar M.H.A. ;Ishak N. ;Hamzah S.R. ;Mus'ab Sahrim ;Ismail I. ;Faculty of Engineering and Built Environment ;Faculty of Science and Technology ;Faculty of Economics and Muamalat ;Universiti Sains Islam Malaysia (USIM)Universiti Putra Malaysia (UPM)A two-point block backward difference technique is established for solving nonlinear Riccati differential equations directly. The proposed method is coded using a variable order step size (VOS) algorithm. The advantage of the two-point block method is its programmability to implement parallel programming techniques. Combination of the block method and VOS algorithm allows for a significant reduction of computation cost in comparison to conventional methods. With an added advantage of the recursive relationship between integration coefficients of different orders, the proposed two-point block method provides efficient computation without loss of accuracy. � 2018 Author(s). - Some of the metrics are blocked by yourconsent settings
Publication A study on Malaysia atmospheric effect on radio over free space optic through radio frequency signal and light propagation in fiber for future communication development(American Institute of Physics Inc., 2020) ;Zainurin S.N. ;Ismail I. ;Saulaiman U.S. ;Ismail W.Z.W. ;Mustafa F.H. ;Sahrim M. ;Jamaludin J. ;Balakrishnan S.R. ;Faculty of Engineering and Built Environment ;Universiti Sains Islam Malaysia (USIM)Universiti Sains Malaysia (USM)This article presents the effects of haze attenuation on Radio over Free Space Optic (RoFSO) transmission system in KLIA Sepang, one of the towns in Malaysia. The haze condition which affects the FSO link transmissions was considered on October 2015 and on October 2017 at KLIA Sepang referring to the reading record of Air Pollution Index (API). In this paper, OptiSystem simulation software is used as a preliminary study before configuring the real RoFSO setup. We model the RoFSO by converting the radio frequency (RF) signal into light where the light source intensity is modulated with the RF signal. RF signal travels through free space while light propagates through fiber optic channel. Single-FSO and four- FSO channels are compared and analyzed in terms of bit-error-rate (BER), received optical power and eye diagram pattern. The results show that the performance of RoFSO with four-FSO channel system in comparison with single-channel has better receiver sensitivity and clear eye diagram. For future work, deploying multiple RoFSO system can fulfil the increasing demand for optimizing the communication bandwidth. - Some of the metrics are blocked by yourconsent settings
Publication A Study on Microwave Absorption Properties of Carbon Black and Ni0.6Zn0.4Fe2O4 Nanocomposites by Tuning the Matching-Absorbing Layer Structures(Nature Research, 2020) ;Ibrahim I.R. ;Matori K.A. ;Ismail I. ;Awang Z. ;Rusly S.N.A. ;Nazlan R. ;Mohd Idris F. ;Muhammad Zulkimi M.M. ;Abdullah N.H. ;Mustaffa M.S. ;Shafiee F.N. ;Ertugrul M. ;GENIUS Insan College ;Universiti Putra Malaysia (UPM) ;Universiti Teknologi MARA (UiTM) ;Universiti Malaysia Pahang (UMP) ;Universiti Sains Islam Malaysia (USIM)Ataturk UniversityMicrowave absorption properties were systematically studied for double-layer carbon black/epoxy resin (CB) and Ni0.6Zn0.4Fe2O4/epoxy resin (F) nanocomposites in the frequency range of 8 to 18 GHz. The Ni0.6Zn0.4Fe2O4 nanoparticles were synthesized via high energy ball milling with subsequent sintering while carbon black was commercially purchased. The materials were later incorporated into epoxy resin to fabricate double-layer composite structures with total thicknesses of 2 and 3 mm. The CB1/F1, in which carbon black as matching and ferrite as absorbing layer with each thickness of 1 mm, showed the highest microwave absorption of more than 99.9%, with minimum reflection loss of −33.8 dB but with an absorption bandwidth of only 2.7 GHz. Double layer absorbers with F1/CB1(ferrite as matching and carbon black as absorbing layer with each thickness of 1 mm) structure showed the best microwave absorption performance in which more than 99% microwave energy were absorbed, with promising minimum reflection loss of −24.0 dB, along with a wider bandwidth of 4.8 GHz and yet with a reduced thickness of only 2 mm.