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Fabrication of Micromold Cavity for Microreplication: a Review
Research Output | Dar Al-hikmah Library | IIUM Only

In this paper, various fabrication techniques for micromold cavity are reviewed and discussed. Silicon and lithography based fabrication were being used for years for the fabrication of micromold cavity. In the later stage direct fabrication techniques such as focused ion beam, micro electro discharge machining, laser micromachining, tool based mic

Immbolization of Lipase on multi-Walled Carbon Nanotubes
Research Output | Dar Al-hikmah Library | IIUM Only

Immobilized enzymes, such as lipases, have diverse applications including chemical, fuel, pharmaceutical and food processing industries. In this study, commercially available lipase extracted from Aspergillus niger has been immobilized on (MWNTs). The enzyme was bound to carbon nanotubes by covalent bonding, in the presence of N-(3-dimethylaminopro

Investigation of Finish Cut of Micro Electro Discharge Milling for Nano Surface Finish
Research Output | Dar Al-hikmah Library | IIUM Only

In this paper the machining condition to achieve nano surface roughness in finish cut micro electro discharge milling was investigated. The effect of feed rate and capacitance were studied on average surface roughness (Ra), and maximum peak-to-valley roughness height (Ry). Statistical models were developed using three-level twofactor experimental d

Influence of Micro End Milling Process Parameters on Surface Roughness
Research Output | Dar Al-hikmah Library | IIUM Only

This paper reports the influence of micro end milling process parameters on surface roughness of beryllium copper alloy. A number of microchannels were fabricated in order to characterize the process parameters influencing surface roughness. Two-level four-factor statistical models were developed to predict the average (Ra) and peak-to-valley (Rt)

Investigation of Burr Formation in Micro End Milling
Research Output | Dar Al-hikmah Library | IIUM Only

This paper discussed the investigation of the burr formation in micro end milling process on stainless steel. Thus, formation of burr after machined by micro end milling process was investigated and analyzed. Tungsten carbide end mill cutting tool of diameter 500 μm was used with depth of cut of 200 μm. A number of microchannels were machined to

Effects of Workpiece Preheating on Surface Roughness, Chatter and Tool Performance During End Milling of Hardened Steel D2
Research Output | Dar Al-hikmah Library | IIUM Only

This paper presents the results of experimental investigations conducted on a vertical machining centre (VMC) to ascertain the effectiveness of brazed circular polycrystalline cubic boron nitride (PCBN) inserts in end milling of hardened steel AISI D2 (60-62 HRC), under room temperature and workpiece preheated conditions. Comparison was made in ter

Paediatric Airway Reconstruction: Experience from Seven Cases
Research Output | Dar Al-hikmah Library | IIUM Only

Objective: To analyse difficulties and outcome of pediatric laryngotracheal reconstruction using cartilage graft for severe subglottic stenosis Methods: Retrospective analysis of all laryngotracheal reconstruction since the past 3 years from 2003-2006. Results: Seven cases altogether, age ranging from one to thirteen years. All had grade iii and ab

The Perceptions of Women’s Roles and Progress: a Study of Malay Women
Research Output | Dar Al-hikmah Library | IIUM Only

This study examines the general perceptions of women towards their roles, their interpretation of progress, as well as the facilitating factors and barriers to their progress. Questionnaires were distributed to 1,000 Malay women in Malaysia from rural and urban areas, from various age and income groups. Interviews were also carried out on the selec

The long-Run and Dynamic Behaviors of Wages, Productivity and Employment in Malaysia
Research Output | Dar Al-hikmah Library | IIUM Only

Purpose – This paper aims to examine the long-run and dynamic behaviors of real wage-employment-productivity relationship, using Malaysian manufacturing data, and to determine which related labor theories are supported. Design/methodology/approach – Time-series econometric techniques, which include stationarity and cointegration tests, vector e

Study the Campus Weather Observation for Environmental Monitoring
Research Output | Dar Al-hikmah Library | IIUM Only

A Micro-scale modeling system is being applied on an experimental basis at the International Islamic University Gombak campus for production of real/-time, high resolution weather forecasts. The numerical experiment is being supported by IIUM. It is believed to be the first time that a real-time microclimate data has been monitored by the departmen

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