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 | Publication Date | First Public Date | Contributors |
| Numerical analysis of TBM tunnel lining behavior using shotcrete constitutive model /Prof Madya Dr. Mohd Ashraf Mohd Ismail Shotcrete is a ftlndamental support element for tunnels and underground constructions. Shortly after application, shotcrete linings undergo a high load while the ordinary concrete is not fully hardened yet. Therefore, the time-dependent behaviour of the shotcrete material must consider. Traditional approaches assume a linear elastic behaviour using... | 3/9/2020 | 5/5/2018 | Prof Madya Dr. Mohd Ashraf Mohd Ismail - Author | |
| Preparation of functionalized adsorbents from natural clays by physical, chemical and physio-chemical modifications a fundamentals investigation/Dr. Foo Keng Yuen Tiie versatility of natural clay and their ability to adsorb a variety of environmental contaminants present in the water effluents has attracted aesthetic concem among environmentalist. These practical applications rely primanly on the diversity of natural clay structure to retain to relai harmlul and undesirable substance from the immediate e... | 6/18/2019 | 6/12/2019 | Dr. Foo Keng Yuen - Author | |
| Pt-based catalytic microcombustor for micropower generation/Muhamad Nazri Murat Muhamad Azman Miskam, Mohd Azmier Ahmad, Zainal Alimuddin Zainal Alauddin, Mohammad Zulfikar Ishak This paper presents the fabrication and characterization of platinum-based catalytic microcombustor. The platinum catalyst was deposited onto type-304 stainless steel using the wet impregnation method. The stainless steel undergoes controlled conversion coating treatment in sulfuric acid solution to increase the porosity... | 12/10/2020 | 9/9/2014 | Muhamad Nazri Murat - Author Muhamad Azman Miskam - Author Mohd Azmier Ahmad - Author Zainal Alimuddin Zainal Alauddin - Author Mohammad Zulfikar Ishak - Author | |
| Response of kluyveromyces marxianus against osmotic stress kinetics, mechanism, and characterization during very high gravity bioethanol fermentation_Dr. Khairiah Abd Karim Stress induced by ethanol accumulation is a fe ctor that inhibits cellular growth during fermentation and reduced ethanol yields. To determine the effect of ethanol during growth of K/uyveromyces marxianus, fermentation wus performed at 40°C, 150 rpm for 72 h, in the presence of various ethanol concontrntions (5 - 25 % (v/v)). Under the condi... | 6/13/2019 | 3/4/2019 | Dr. Khairiah Abd Karim - Author | |
| Rock overstressing in deep tunnel excavation of pahang-selangor/Romziah Azit, Mohd Ashraf Mohamad lsmail, Sharifah Farah Fariza Syed Zainal Tunneling under high overburden and in-situ stress may cause tunnel instability because of rock overstressing. Evaluating overstressing in deep hard rocks is crucial to minimize excavation risks. The excavation of the Pahang-Selangor Raw Water Transfer Tunnel is evaluated in this study. A potential overstressing problem is expected at a tunnel dept... | 3/9/2020 | 6/9/2009 | Romziah Azit - Author Mohd Ashraf Mohamad lsmail - Author Sharifah Farah Fariza Syed Zainal - Author | |
| Semisolid nucleation mechanism of open cell foam aluminium/Dr. Anasyida Abu Seman @ Hj Ahmad, Dr. Nurulakmal Mohd Sharif , Prof. Ir. Dr. Zuhailawati Hussain Gravity die casting and squeeze casting are the techniques used for the fabrication of hypoeutectic open-cell Al-Si foams which are characterized and studied for their energy absorbing quality in compression tests. The effect of different amounts of sodium chloride (NaCl) (up to 56 vol.%) as a space holder in the casting of aluminum foam on the mor... | 3/5/2020 | 12/11/2018 | Dr. Anasyida Abu Seman @ Hj Ahmad - Author Dr. Nurulakmal Mohd Sharif - Author Prof. Ir. Dr. Zuhailawati Hussain - Author | |
| Solid state lighting driver ic modeling using behavioral simulation technique/A. Marzuki, S. R. Abdul Aziz, Tun Zainal Ami Zulkifli Solid state lighting (SSL) technology has a potential to provide artificial lighting more efficiently, low cost and longlasting alternatives to conventional incandescent and fluorescent lighting sources. As the LED technology evolves, the applications involving LEDs are innumerable and its varieties impose a clear demand on design of controllable S... | 3/9/2020 | 1/1/2018 | Marzuki A. - Author Abdul Aziz S. R - Author Tun Zainal Ami Zulkifli - Author | |
| Synergistic response of pogostemon cablin (blanco) benth cell suspension cultures to precursor feeding and elicitation / Dr.Derek Chan Juinn Chieh, Fatin Izzatie Mazlan This research investigates the synergistic effect of precursor feeding and elicitation towards the production of patchouli alcohol (PA) from Pogostemon cab/in callus and cell suspensron cultures rn shake flask systems. Initial study on feeding cis-farnesol as the precursor to activate PA production revelead tho prt sence of 68 mg/ml of PAin the c... | 12/30/2019 | Dr.Derek Chan Juinn Chieh - Author Fatin Izzatie Mazlan - Author | ||
| Synergistic response of pogostemon cablin (blanco) benth cell suspension cultures to precursor feeding and elicitation towards the productions of patchouli alcohol /Dr. Khairiah Abd Karim The individual and combined effects of precursor addition using cis-farnesol (CF) and elicitation using methyl jasmonate (MeJA), chitosan (CHI), yeast extract (YE) and Pycnoporous sanguineus (PS) were investigated to enhance the synthesis of patchouli alcohol (PA) in suspension cultures of Pogostomon cab/in (Blanco) Benth. Cultures added wit... | 3/21/2019 | 24/7/2018 | Dr. Khairiah Abd Karim - Author | |
| The effect of space holder content and decomposition methods in fabrication of aluminum foams by powder metallurgy method using carbamide space holder/A. H. Amirah, M. S. Nurulakmal, And A. S. Anasyida The effect of space holder amount and decomposition methods on the morphology, density and porosity and compressive properties of aluminum foams were investigated. Aluminum foam was fabricated by powder metallurgy method using spherical carbamide as space holder using three different decomposition method of carbamide includes; dissolution process, ... | 3/5/2020 | 1/1/2016 | Amirah A. H. - Author Nurulakmal M. S. - Author Anasyida A. S. - Author | |
| The effect of space holder content and sintering temperature of magnesium foam on microstructural and properties prepared by sintering dissolution process (sdp) using carbamide space holder/S.F. Aida , H. Zuhailawati , A.S. Anasyida Magnesium foam has gained a significant interest in structural application due to low density and greater strength than aluminium foam. In this study, magnesium foam was produced by sintering dissolution process (SDP) using spherical carbamide as the space holder. Magnesium foam was prepared using SDP at sintering temperatures (600 'C, 630 0 C, 650... | 3/5/2020 | 1/1/2017 | Aida S.F. - Author Zuhailawati H. - Author Anasyida A.S. - Author | |
| The study of direct thermal-to-electricity conversion using thermionic heat cell device/ Assoc Prof. Dr. Khairudin Mohamed Thermionic energy conversion (TEC) is the direct conversion of heat into electricity by the mechanism of thermionic emission, the spontaneous ejection of hot electrons from a surface in vacuum environment. There are two major obstacles for achieving highly efficient TECs; the strict need for low emitter and collector work functions, and the mutual ... | 9/24/2020 | 11/1/2015 | Assoc Prof. Dr. Khairudin Mohamed - Author | |
| The study of direct thermal-to-electricity conversion using thermionic heat cell device_Assoc. Prof. Dr. Abdus Samad Mahmud, Assoc. Prof. Dr. Jamaluddin Abdullah, _M4_2015_NI Thermionic energy conversion (TEC) is the direct conversion of heat into electricity by the mechanism of thermionic emission, the spontaneous ejection of hot electrons from a surface in vacuum environment. There are two major obstacles for achieving highly efficient TECs; the strict need for low emitter and collector work functions, and the mutual ... | 12/18/2020 | 2/11/2015 | Assoc. Prof. Dr. Abdus Samad Mahmud - Author Assoc. Prof. Dr. Jamaluddin Abdullah - Author | |
| The study of the catalytic activity for graphene formation under atmospheric pressure chemical vapor deposition/ Prof. Ir. Dr. Abdul Rahman Mohamed Large area graphene (LAG) were synthesized and grown on copper (Cu) foil and nickel (Ni) foil. The synthesis were carried out using atmospheric pressure chemical vapor deposition and methane
decomposition. The highly uniform and i-•' of high quality LAG was produced and was evaluated by Raman spectroscopy mapping, electron diffraction and. trans.m... | 6/18/2019 | 6/12/2019 | Prof. Ir. Dr. Abdul Rahman Mohamed - Author | |
| Time-dependency behavior of steel fiber reinforced shotcrete lining under rock overstressing using shotcrete model / Heyam Shaalan A numerical analysis is implemented to estimate the time-dependent behavior of the steel fiber reinforced shotcrete lining (SFRS) using the constitutive model of shotcrete. Based on the concept of elasto—plastic strain hardening/softening plasticity, a new model of shotcrete is formulated, in which the time dependent strength, stiffness, creep and ... | 3/9/2020 | 1/1/2016 | Heyam Shaalan - Author | |
| Understanding of photo-degradafion mechanism in nr latex with the incorporation of surface modified bi-metal oxide/Assoc.Prof. Dr Nadras Othman The aim of this work is to prepare I-NR using a photodegradation method, hence to characterize its physical and chemical properties. In this study, UV light was used to degrade NR in latex state. Reaction parameters such as UV radiation, temperature, hydrogen peroxide, reaction time, DRC and stabilizers showed synergistic effect and influenced the ... | 9/24/2020 | 7/30/2019 | Assoc.Prof. Dr Nadras Othman - Author |
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