Now showing items 76-95 of 136

    • Machining performance of reinforced alumina insert in end milling of AISI 1018 steel 

      Mohd Nor Hakim, Hassan; Mohammad Ikhwan Zaini, Ridzwan; Zainal Arifin, Ahmad, Prof.; Mohd Mustafa Al Bakri, Abdullah; Azman, Ahmad Bakir; Mazlan, Mohamed (Trans Tech Publications, 2013-09)
      The main goal of this work is to investigate the performance of zirconia toughened alumina (ZTA) and ZTA reinforced with magnesium oxide (MgO) used as cutting insert in end milling of AISI 1018 steel with hardness of 27 ...
    • Malaysian Foxtail grass - A potential source of natural/agro fibre for polymer composite panel 

      Che Mohd Ruzaidi, Ghazali, Prof. Madya; Mohd Mustafa Al Bakri, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Norazian, Mohamed Noor; Rafiza, Abdul Razak; Zarina, Yahya (Trans Tech Publications, 2013)
      Foxtail grass, also known as 'rumput bulu' by the local people, is one of the fast growing grasses abundantly available all over Malaysia. A full grown Foxtail grass attains a height of about 0.5 - 1.5 meters. The fibres ...
    • Mean imputation techniques for filling the missing observations in air pollution dataset 

      Noorazian, Mohamed Noor; Ahmad Shukri, Yahaya, Prof. Madya; Nor Azam, Ramli, Prof. Dr.; Mohd Mustafa Al Bakri, Abdullah (Trans Tech Publications, 2014)
      Almost all real life datasets consist missing values. These are usually due to machine failure, routine maintenance, changes in siting monitors and human error. The occurence of missing values requires special attention ...
    • Mechanical performances of fly ash geopolymer bricks 

      Wan Mastura, Wan Ibrahim; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Khairul Nizar, Ismail, Prof. Madya Dr.; Mohd Mustafa Al Bakri, Abdullah (American Scientific Publishers, 2013-01)
      Geopolymer is a new class of three-dimensionally networked amorphous to semi-crystalline alumino-silicate materials, and first developed by Professor Davidovits in 1978. Geopolymers can be synthesized by mixing alumino-silicate ...
    • MgH2 and LiH metal hydrides crystals as novel hydrogen storage material: Electronic structure and optical properties energy 

      Ali Hussain, Reshak, Prof. Dr. (Elsevier Ltd., 2013-09)
      We have performed a comprehensive theoretical investigation of the electronic band structure, density of states, electronic charge density and optical properties of the novel hydrogen storage material MgH2 and LiH compounds. ...
    • Microstructural analysis of geopolymer and ordinary Portland cement mortar exposed to sulfuric acid 

      Mohd Izzat, Ahmad; Mohd Mustafa Al-Bakri, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Moga, Ligia Mihaela; Che Mohd Ruzaidi, Ghazali, Prof. Madya; Muhammad Faheem, Mohd Tahir; Sandu, Andrei Victor (Revista De Materiale Plastice, 2013-09)
      The vulnerability of ordinary Portland cement (OPC) concrete to acidic attack is a worrying subject regarding the future durability of this binder. On the other side of binder's technology, the new technology of cement ...
    • Microstructure studies on the effect of the alkaline activators of fly ash-based geopolymer at elevated heat treatment temperature 

      Mohd Mustafa Al-Bakri, Abdullah; Omar A., Abdulkareem; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Khairul Nizar, Ismail, Assoc. Prof. Dr.; Rafiza, Abdul Razak; Zarina, Yahya; Alida, Abdullah (Trans Tech Publications, 2013)
      Fly ash-based geopolymers are new binding materials produced to replace the ordinary Portland cement (OPC) used in concrete. In this research, the effect of alkaline activators on the compressive strength and the microstructure ...
    • Microstructure study on volcano ash geopolymer aggregate at different sintering temperature 

      Rafiza, Abdul Razak; Mohd Mustafa Al Bakri, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Khairul Nizar, Ismail, Assoc. Prof. Dr.; Djwantoro, Hardjito, Dr.; Wan Hamidon Wan Badaruzzaman, Ir. Dr.; Zarina, Yahya (Trans Tech Publications, 2014)
      Recent research shows that the by-product materials such as fly ash can be used as raw material in producing aggregates and lightweight aggregates. The usage of this material can improve the quality of the aggregates ...
    • Milled groove square shape conformal cooling channels in injection molding process 

      Shayfull Zamree, Abd. Rahim; Safian bin Sharif, Prof. Dr.; Azlan, Mohd Zain, Dr.; Rozaimi, Mohd. Saad; Ahmad Fairuz, Mansor (Taylor and Francis Group, LLC., 2013-08)
      In designing molds for injection molding process, it is very difficult to achieve efficient cooling with uniform thermal distribution. To overcome these issues, the uses of conformal cooling channels with the uniform ...
    • NaAuS chicken-wire-like semiconductor: electronic structure and optical properties 

      Ali Hussain, Reshak, Prof. Dr.; Saleem Ayaz, Khan; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Jiri Bila (Elsevier, 2014-01)
      The electronic structure, charge density and optical properties of NaAuS a chicken-wire-like semiconductor was calculated using full potential linear augmented plane wave based on density functional theory. The Ceperley-Alder ...
    • Natural Fiber Filament Wound Composites: A Review 

      Suriyati, Mohamed Ansari; Che Mohd Ruzaidi, Ghazali; Kamarudin, Hussin (EDP Sciences, 2017)
      In recent development, natural fibers have attracted the interest of engineers, researchers, professionals and scientists all over the world as an alternative reinforcement for fiber reinforced polymer composites. This is ...
    • Natural rubber/styrene butadiene rubber/recycled nitrile glove (NR/SBR/rNBRg) ternary blend: Curing characteristics and swelling test 

      Nik Zakaria, Nik Yahya; Nik Noriman, Zulkepli, Dr.; Mohd Arif Anuar, Mohd Salleh; Hanafi, Ismail, Prof.; Ragunathan, Santiagoo (Trans Tech Publications, 2014)
      Curing characteristics and swelling behavior of natural rubber/styrene butadiene rubber/recycled nitrile glove (NR/SBR/rNBRg) blends were investigated. Eleven composition ratio; 50/50/0, 50/40/10, 50/30/20, 50/20/30, ...
    • Natural rubber/styrene butadiene rubber/recycled nitrile glove (NR/SBR/rNBRg) ternary blend: Tensile properties & morphology 

      Nik Zakaria, Nik Yahya; Nik Noriman, Zulkepli, Dr.; Hanafi, Ismail; Sam, Sung Ting, Dr.; Santiagoo, Ragunanthan (AENSI Publisher All rights reserved, 2013-10)
      Recycling waste rubber products by utilising them in rubber blends had provided the simplest and most cost-effective ways in solving several environmental issues regarding the abundance of scrap rubbers. Discarded nitrile ...
    • The need to intensify research efforts in the alternative to lead shot 

      Baba Gowon; Kahtan S., Mohammed, Dr.; Shamsul Baharin, Jamaludin, Prof. Dr.; Alida, Abdullah (Trans Tech Publications, 2014)
      The problem of lead poisoning resulting from the use of lead shot in hunting waterbirds and shooting sports has led to the partial ban, voluntary restriction and complete ban of lead shot in some countries. The ban resulted ...
    • A new invention of thermal pad using sol-gel nano-silver doped silica film in plastic leaded chip carrier (PLCC) application by using computational fluid dynamic sofrware, CFD analysis 

      Mazlan, Mohamed; A. Rahim; Mohd Mustafa Al-Bakri, Abdullah; Iqbal, M. A.; Wan Yusra Hannanah, Wan Abdul Razak; Mohammad Shahril, Salim (Trans Tech Publications, 2013)
      Thermal pad is new technology in the world that been used in PLCC in order to reduce junction temperature to the minimum level in electronic components. Thermal Pad was made by using nano-silver as main material. Nano-silver ...
    • New processing method of kaolin-based geopolymer brick by using geopolymer brick machine 

      Muhammad Faheem, Mohd Tahir; Mohd Mustafa Al Bakri, Abdullah; Che Mohd Ruzaidi, Ghazali, Prof. Madya; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Mohd Izzat, Ahmad; Alida, Abdullah (Trans Tech Publications, 2014-01)
      With increased activity in construction, deficiency of building materials and construction waste improvements have encouraged the development of new building materials. Conventional construction bricks are usually made ...
    • Numerical investigation of heat transfer of twelve Plastic Leaded Chip Carrier (PLCC) by using computational fluid dynamic, FLUENT™ software 

      Mazlan, Mohamed; A. Rahim; Iqbal, M. A.; Mohd Mustafa Al Bakri, Abdullah; Wan Yusra Hannanah, Wan Abdul Razak; Mohd Nor Hakim, Hassan (Trans Tech Publications, 2013)
      Plastic Leaded Chip Carrier (PLCC) package has been emerged a promising option to tackle the thermal management issue of micro-electronic devices. In the present study, three dimensional numerical analysis of heat and fluid ...
    • On the structure of shape memory alloys 

      Cristian Acitei, Dragos; Victor Sandu, Andrei; Mohd Mustafa Al Bakri, Abdullah; Petrica, Vizureanu; Alida, Abdullah (Trans Tech Publications, 2013-12)
      The paper presents the obtaining of shape memory alloys, base copper and a diffractometer and microscopic study on some samples. The study was made on CuZnAl samples, obtained by classic casting and educated. The shape ...
    • Optoelectronic and thermoelectric properties of KAuX5 (X = S, Se): A first principles study 

      Wilayat, Khan; Ali Hussain, Reshak, Prof. Dr. (Springer Verlag, 2014-02)
      The electronic structure as well as optical and thermoelectric properties of the orthorhombic polychalcogenides of gold KAuX5 (X = S, Se) compounds have been investigated using full-potential linearized augmented plane ...
    • Optoelectronic and thermoelectric properties of KAuX5 (X = S, Se): A first principles study 

      Wilayat, Khan; Ali Hussain, Reshak, Prof. Dr. (Springer US, 2014-02)
      The electronic structure as well as optical and thermoelectric properties of the orthorhombic polychalcogenides of gold KAuX5 (X = S, Se) compounds have been investigated using full-potential linearized augmented plane ...