Now showing items 21-40 of 206

    • External temperature and pressure effects on thermodynamic properties and mechanical stability of yttrium chalcogenides YX(X=S, Se and Te) 

      Seddik, T.; Rabah, Khenata, Prof. Dr.; Abdelmadjid, Bouhemadou; Guechi, N.; Sayede, Adlane D.; Varshney, Dinesh; Yarub, Al-Douri, Assoc. Prof. Dr.; Ali Hussain, Reshak, Prof. Dr.; Bin-Omran, S. (Elsevier B.V., 2013)
      The full potential linearized augmented plane wave method within the framework of density functional theory is employed to investigate the structural, thermodynamic and elastic properties of the yttrium chalcogenides (YX: ...
    • Chalcogenide nanostructures: Topography, synthesis, properties, and applications 

      Yarub, Al-Douri; Uda, Hashim, Prof. Dr. (AIP Publishing LLC, 2014)
      High-quality Cadmium sulfide (CdS) nanostructures for high-efficiency optoelectronic devices were prepared at different annealing temperatures using a sol-gel spin-coating method. Atomic force microscopy and X-ray diffraction ...
    • Advances in biosensors: Principle, architecture and applications 

      Veeradasan, Perumal; Uda, Hashim, Prof. Dr. (Elsevier, 2014-01)
      The ability to detect pathogenic and physiologically relevant molecules in the body with high sensitivity and specificity offers a powerful opportunity in the early diagnosis and treatment of diseases. Early detection and ...
    • Protein solubility behaviour of fresh and frozen chicken meat in slaughtering and non slaughtering condition 

      Nahar, M. K.; Zarina, Zakaria, Dr.; Uda, Hashim, Prof. Dr. (Faculty of Food Science & Technology, Universiti Putra Malaysia, 2014)
      This work was investigated the protein solubility properties of meat from chicken in different body part. The effects of fresh and freezing condition were studied on the protein solubility as a functional property of ...
    • Morphology and optical investigations of ZnO pyramids and nanoflakes for optoelectronic applications 

      N. K., Hassan; M. Roslan, Hashim; Yarub, Al - Douri (Elsevier, 2014-06)
      Zinc-oxide (ZnO) pyramidal and nanoflakes were grown by electrochemical deposition of Zn(NO3)2·6H2O on n-type Si substrate with different crystallographic orientations and on indium tin oxide (ITO)-coated glass. Various ...
    • Design and fabrication of silicon nanowire based sensor 

      Siti Fatimah, Abd Rahman; Nor Azah, Yusof, Prof. Dr.; Uda, Hashim, Prof. Dr.; Mohammad Nuzaihan, Md Nor (Electrochemical Science Group (ESG), 2013)
      This paper reports the process development of silicon nanowires sensor requires both the fabrication of nanoscale diameter wires and standard integration to CMOS process. By using silicon-on-insulator (SOI) wafer as a ...
    • Chrome mask design for microfluidic fabrication 

      Perumal, Veeradasan; Uda, Hashim, Prof. Dr. (Trans Tech Publications, 2013)
      This paper presents a simple and effective method to design chrome mask for microfludic fabrication. Microfluidic fabrication involves 9 major step and mainly depends on the master mold template formation by SU-8 photoresists ...
    • Functionalized three-dimensional carbon microarrays for cancer biomarker detection 

      Penmatsa, Varun; Ruslinda, Abdul Rahim, Dr.; Beidaghi, Majid; Kawarada, Hiroshi; Chunlei, Wang (Electrochemical Society, 2013)
      A label-free detection strategy for the detection of platelet-derived growth factor (PDGF-BB) oncoprotein detection using signaling aptamer/protein binding complex is reported. The 3D carbon microarrays detection platform ...
    • Computational simulation of ultraviolet ZnO diode laser 

      Ouerdane, A.; Bouslama, M'Hamed; Abdellaoui, A.; Ghaffour, M.; Yarub, Al-Douri, Assoc. Prof. Dr. (IOP Publishing Ltd, 2013)
      This article deals with a mathematical technique for the study of functionality of semiconductor laser, by its rate equations, to be used in the simulation of high speed optical systems. We describe the development of ...
    • Nanobiosensor for the detection and quantification of pork adulteration in meatball formulation 

      Md. Eaqub, Ali, Dr.; Uda, Hashim, Prof. Dr.; Shuhaimi, Mustafa; Yaakob, Che Man; Tijjani Adam, Shuwa; Qazi Muhammad, Humayun (Taylor & Francis, 2014)
      A 27-nucleotide AluI fragment of swine cytochrome b (cytb) gene was integrated to 3-nm diameter citrate–tannate-coated gold nanoparticles to fabricate a species-specific nanobiosensor. The biosensor was applied to authenticate ...
    • A simple one-step anodising method for the synthesis of ordered porous anodic alumina 

      Voon, Chun Hong; Mohd Nazree, Derman, Dr.; Uda, Hashim, Prof. Dr.; Khairel Rafezi Ahmad, Dr.; Ho, Li Ngee (Taylor & Francis, 2014)
      Porous anodic alumina (PAA) has been produced on aluminium substrate by single-step anodising at 50 V in 0.3 M oxalic acid at 15°C for 60 min. The highly ordered pore and cell structure was achieved by subjecting the PAA ...
    • Effect of buffer and pH on the protein extraction for chicken meat 

      M. K., Nahar; Zarina, Zakaria, Dr.; Uda, Hashim, Prof. Dr. (Trans Tech Publications, 2013)
      The study was undertaken to determine the extraction of proteins from chicken meat. The effect of buffer (phosphate, citrate and glycine) and four pH values (6.0, 7.0, 8.0 and 9.0) were investigated. The protein extractability ...
    • Performance of hexagon Au electrode on ZnO thin film schottky diode gas sensor 

      Mas Elyza, Mohd Azol; Mahnaz, Shafiei, Dr.; Loew,  Pei Ling, Dr.; Foo, Kai Loong; Uda, Hashim, Prof. Dr.; Rashidah @ Siti Saedah, Arsat, Dr. (International Frequency Sensor Association (IFSA), 2013)
      This paper presents an analysis of Schottky diode performance with the utilization of zinc oxide (ZnO) thin film as a gas sensor. The presented device is implemented with new type of electrode shape which is hexagon compared ...
    • Cu-SiCp composites as advanced electronic packaging materials 

      Azmi, Kamardin; Mohd Nazree, Derman, Dr.; Mohd Mustafa Al Bakri, Abdullah; Sandu, A.V. (Trans Tech Publications, 2014)
      The demand for advanced thermal management materials such as silicon carbide particles reinforced copper matrix (Cu-SiCp) composites is increasing due to the stringent design requirement in the electronic packaging industries. ...
    • Structural and optical properties of PbI2 nanostructures obtained using the thermal evaporation method 

      Safaa I. Mohammed; Yarub, Al-Douri, Assoc. Prof. Dr.; Uda, Hashim, Prof. Dr.; Naser Mahmoud, Ahmed, Dr.; R., Al-Gaashani (NRC Research Press, 2013-10)
      Lead iodide (PbI2) nanostructures were successfully prepared using the thermal evaporation method on a glass substrate at room temperature. The structural properties were analyzed using X-ray diffraction, which revealed ...
    • Properties of lightweight concrete composites with mixture of fly ash and concrete sludge aggregate 

      Norlia, Mohamad Ibrahim; Roshazita, Che Amat; Shamshinar, Salehuddin; Nur Liza, Rahim; Abdul Rahim, Abdul Razak; Ooi, Wei Hong (Trans Tech Publications, 2014)
      Lightweight foamed concrete is a concrete made by cement slurry mixed with foam so that foamed concrete that is much lighter than conventional concrete can be produced. The objectives of this study is to develop optimal ...
    • Evaluate the effects of various surface roughness on the tribological characteristics under dry and lubricated conditions for Al-Si alloy 

      Riyadh A., Al-Samarai; Haftirman, Dr.; Khairel Rafezi, Ahmad, Dr.; Yarub, Al-Douri, Assoc. Prof. Dr. (Scientific Research Publishing Inc. All rights reserved., 2012-07)
      The effect of surface roughness average of hypereutectic aluminum silicon alloys (with 16 wt% Si) on the friction and wear was investigated. Various surface roughness average (Ra) of different degrees was verified as well ...
    • A Novel AC technique for high quality porous GaN 

      Ainorkhilah, Mahmood; Naser Mahmoud, Ahmed, Dr.; Yuhamdan, Yusof; Yam, Fong Kwong, Dr.; Chuah, Lee Siang, Dr.; Husnen R., Abd; Zainuriah, Hassan (Electrochemical Science Group (ESG), 2013-04)
      In this paper, we report the formation of porous GaN films under a novel alternatingcurrent (sine-wave a.c. (50 Hz)) photo-assisted electrochemical etching (ACPEC) conditions. The ac formed porous GaN with excellent ...
    • Synthesis of single-walled carbon nanotubes: Effects of active metals, catalyst supports, and metal loading percentage 

      Liu, Wei Wen, Dr.; Azizan, Aziz, Assoc. Prof. Dr.; Chai, Siang Piao, Dr.; Abdul Rahman, Mohamed, Prof. Dr.; Uda, Hashim, Prof. Dr. (Hindawi Publishing Corporation, 2013)
      The effects of active metals, catalyst supports, and metal loading percentage on the formation of single-walled carbon nanotubes (SWNTs) were studied. In particular, iron, cobalt, and nickel were investigated for SWNTs ...
    • Effect of heat treatment on microstructure and corrosion behavior of Az91d magnesium alloy 

      Chye, Lih T.; Mohd. Zamzuri, Mohammad Zain; Siti Norbahiyah, Mohamad Badari; Khairul Azwan, Ismail, Dr.; Mohd Nazree, Derman, Dr.; Suhaimi, Illias (Trans Tech Publications, 2013)
      An AZ91D ingot in the as-cast condition was homogenized by heat treatment process. Then, the microstructures produced and corrosion behaviour after heat treatment was studied in detail. As-cast AZ91D was recrystallize by ...