IEM Journal: Recent submissions
Now showing items 221-240 of 310
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Combined flash-vaporisation and solar evacuated tube heat-driven absorption air conditioning system for the tropic
(The Institution of Engineers, Malaysia, 2007-06)A theoretical study based on the thermodynamic consideration has been conducted for a combined flash-vaporisation and solar evacuated tube, heat-driven air conditioning system for cooling of buildings under the tropic ... -
The development of a highly efficient fermentation process for biofuel production from lignocellulosic biomass
(The Institution of Engineers, Malaysia, 2008-06)In this study, bioengineering was applied to generate enzymes with completely reversed coenzyme specificity and developed recombinant yeasts containing those engineered enzymes for construction of an efficient biomass-ethanol ... -
Analysis of design parameter effects on vibration modes of a motorcycle drum brake and brake shoe using the finite element method
(The Institution of Engineers, Malaysia, 2005-03)The natural frequencies and vibration modes of the particular motorcycle drum brake and brake shoe have been determined using the finite element method. The results show that the drum brake has 42 mode shapes in the ... -
Dynamic computer simulation of parts feeding on a vibratory bowl feeder
(The Institution of Engineers, Malaysia, 2006-06)This paper describes the development of three-dimensional (3D) computer simulation software using Java 3D API to simulate parts feeding and orienting in a vibratory bowl feeder. The simulation software can perform dynamic ... -
Keberkesanan pembakaran udara berperingkat dalam mengurangkan emisi dari pembakar berbahanapi gas
(The Institution of Engineers, Malaysia, 2005-09)Process pembakaran dari pembakar yang menggunakan gas sebagai bahanapi berkecenderungan untuk memancarkan emisi yang mengandungi pelbagai bahan cemar seperti NOx, CO, CO2 dan sebagainya. Emisi ini perlu dikurangkan ... -
Turbidity removal from surface water and landfill leachate using cactus opuntia
(The Institution of Engineers, Malaysia, 2007-03)The effectiveness of cactus opuntia, a natural macromolecular coagulant, for turbidity removal was studied via jar test. The jar test was conducted to remove turbidity from two aqueous solutions, namely, surface water and ... -
A CFD analysis on the effect of vortex finder and cylindrical length on cyclone hydrodynamics and centrifugal forces
(The Institution of Engineers, Malaysia, 2009-06)The article presents a Computational Fluid Dynamics (CFD) calculation to predict and to evaluate the flow field and centrifugal forces of gas cyclones. The numerical solutions were carried out using commercial CFD code ... -
Predicting paddy soil productivity
(The Institution of Engineers, Malaysia, 2006-12)Paddy soils are naturally heterogeneous in terms of their physico-chemical properties which affect rice productivity. Currently, uniform application of agricultural inputs on the entire field is not efficient and could ... -
Effect of cold work and overload on fatigue life of notched 2024-T351 aluminium alloy specimens
(The Institution of Engineers, Malaysia, 2005-09)Fatigue life of the notched circular hole 2024-T351 aluminium alloy specimens improves significantly with cold work and the improvement in fatigue life is highest for the 7.6% cold work specimens as compared to un-worked ... -
Resilient modulus of Malaysian base and subbase pavement materials
(The Institution of Engineers, Malaysia, 2008-06)Pavement design approach is shifting towards analytical or mechanistic-based procedures. Resilient modulus is a fundamental parameter used in the procedure and a study was carried out to characterise the parameter for base ... -
Mixing in the mechanically agitated bioreactor: ‘A matter of being stirred, not shaken’
(The Institution of Engineers, Malaysia, 2007-09)Variations in the system parameters can in fact give rise to significant differences in mixing requirement, and failure to operate at the right conditions can result in undesirable outcomes. Biological systems are sensitive ... -
A review of the characteristic features of supervisory and distributed control architecture and its implementation scenarios
(The Institution of Engineers, Malaysia, 2007-12)The paper presents the SCADA architecture, their interface to process hardware and its applications. The characteristics of SCADA are reviewed and salient features are illustrated. The development opportunity and application ... -
Influence of environmental factors on job satisfaction in Malaysian automotive industries
(The Institution of Engineers, Malaysia, 2008-09)A relationship between selected environmental factors and job satisfaction was developed for employees in the automotive industries in Malaysia. Methods in developing the relationship include questionnaire design, data ... -
Carrier position third and fifth order IMDs of a radio-over-fibre system laser
(The Institution of Engineers, Malaysia, 2008-12)The third order intermodulation distortion (IMD3), instead of the fifth order intermodulation distortion (IMD5), is often thought to limit the performance of the radio-over-fibre system as it tends to fall in-band. A ... -
A hybrid active power filter connected to aphotovoltaic array
(The Institution of Engineers, Malaysia, 2008-03)This paper presents a single-phase two-wire hybrid active power filter (APF) that is connected to photovoltaic (PV) array. The uniqueness of proposed scheme is the fact that it the combines the conventional APF with high-pass ... -
Development of low noise, variable high gain amplifier for signal conditioning circuit
(The Institution of Engineers, Malaysia, 2006-06)This paper presents the design of low noise, variable high gain amplifier for signal conditioning circuit. A cascaded amplifier is used to improve the gain. A variable resistor is used to adjust the Common Mode Rejection ... -
Experimental investigation of an air enhancement device on the performance of a spark ignition engine
(The Institution of Engineers, Malaysia, 2009-09)Air enhancement devices for air intake manifold systems of automotive engines have been widely available in the market with the claim that they can improve fuel-air mixing and thus bring more power to the engine performance ... -
Production of acylglycerol catalysed by rice bran lipase in a packed bed reactor
(The Institution of Engineers, Malaysia, 2008-09)Abstract A 20 litre packed bed reactor (PBR) with heating and water removal system was designed and fabricated for the esterification of palm oil fatty acid distillate (PFAD) catalyzed by immobilized rice bran lipase ... -
2-cycle moment distribution for the analysis of continuous beams and multi-storey framed structures
(The Institution of Engineers, Malaysia, 2007-03)In the 2-Cycle Moment Distribution, moments are distributed twice regardless of the number of spans. Moments are carried over first and are included with fixed-end moments before the distribution is made. Both dead load ... -
Use of infoworks river simulation (RS) in Sungai Sarawak Kanan modeling
(The Institution of Engineers, Malaysia, 2007-03)The main purpose of this project was to reconstruct historical flood events at the flood-prone Sungai Sarawak Kanan to obtain flood hydrographs to provide explanation to the flooding of Bau town and surrounding areas. The ...