Now showing items 194-213 of 310
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Nano-sized Mn2O3 prepared by a novel solvolysis route as an electrochemical capacitor electrode material
(The Institution of Engineers, Malaysia, 2008-09)Nano-sized manganese oxide (Mn2O3) was synthesized using a solvothermal route with the presence of citric acid as the chelating agent and acetone as the handle. The sample obtained was heated at 400˚C, 600˚C and 800˚C ... -
Nitrate-nitrogen concentration variationin groundwater flow in a paddy field
(The Institution of Engineers, Malaysia, 2010-12)This study was carried out to evaluate the influence of groundwater on nitrate-nitrogen concentration in a paddy field. Fertiliser if applied excessively can cause leaching into the soil and will penetrate deep into the ... -
Noise pollution near to the construction site in an urban area (a case study in Shah Alam)
(The Institution of Engineers, Malaysia (IEM), 2022)In the contemporary era of Malaysia's rapid modernisation, a multitude of construction and urbanisation projects are underway, particularly in urban areas. As Malaysia strives to achieve its modernisation goals and join ... -
Novel bimetallic tin-manganese oxides-carbon nanotube nanocomposite and their charge storage properties
(The Institution of Engineers, Malaysia (IEM), 2014-06)The synthesis of CNTs/(Sn+Mn)Ox nanocomposites were first attempted through combining the hydro-oxidation of SnCl2 to SnO2 and the reduction of KMnO4 to MnO2 onto CNTs in this work. The reducing presence of SnCl2 accelerated ... -
A novel coaxial fed patch antennas at TVWS band channels 24 and 28 for rural wireless communication
(The Institution of Engineers, Malaysia (IEM), 2020)Microstrip patch antennas are useful for wireless communication as the technology is continuously evolving. Contacting types of microstrip patch antennas, coaxial-probe feeding, will be discussed and designed for the ... -
Numerical and experimental study of shock/turbulent flow interaction – A code validation test
(The Institution of Engineers, Malaysia (IEM), 2011-12)A numerical code has been developed to solve the shock/turbulence interaction using grid adaptation technique. For the code validation test, shock wave propagations through nozzle are studied experimentally and numerically ... -
Numerical and experimental study on wave propagation in the open atmosphere
(The Institution of Engineers, Malaysia (IEM), 2012-09)In the present research works, wave propagation in the open atmosphere has been investigated both numerically and experimentally. Two-dimensional (2D) numerical code has been developed to solve the Euler equations for the ... -
Numerical modelling of reverse pulse cleaning on rigid ceramic filters
(The Institution of Engineers, Malaysia, 2005-03)Many industrial processes involve the generation of waste gases and particulates. Environmental legislation enacted as a result of government policy has compelled industry to pay a serious attention to the air pollution ... -
Numerical simulation of dust cake build-up and detachment on rigid ceramic filters for high temperature gas cleaning
(The Institution of Engineers, Malaysia, 2004-03)Rigid ceramic filters have proved themselves as highly efficient gas filtration devices. However, the filter cleaning mechanisms by which deposited cake is removed from the filter surface are still not fully understood. ... -
Numerical simulation of the decay of grid-generated turbulence in a shock tube
(The Institution of Engineers, Malaysia (IEM), 2014-06)The decay of the grid-generated turbulence has been investigated numerically by solving the time-dependent threedimensional Navier-Stokes equations with k-e turbulence model for a compressible fluid. Turbulence grids are ... -
Numerical study of an anisotropically supported rotor with parametric excitation
(The Institution of Engineers, Malaysia, 2009-09)Anisotropic structures, e.g. oil journal bearings are often employed as supporting structure for rotating machineries. Moreover, cross-section of rotating element is often non-symmetrical due to various practical reasons. ... -
Online gaming addiction factors among tar uc students in KL
(The Institution of Engineers, Malaysia (IEM), 2022)Online gaming is a popular digital entertainment that people worldwide, including university students, are well-received. Consequently, addiction to online gaming is worrying, and this issue has received significant ... -
Optimisation of hydrolysis conditions for ethanol production from sorghum starch
(The Institution of Engineers, Malaysia, 2010-09)The conversion of starch to sugar can be achieved by hydrolysis process. The two-step enzymatic hydrolysis of sweet sorghum was performed by commercially available α-amylase and glucoamylase. An optimisation study was ... -
Parameter estimation of tapioca starch hydrolysis process: Application of least squares and genetic algorithm
(The Institution of Engineers, Malaysia, 2005-12)The performance of genetic algorithm (GA) in nonlinear kinetic parameter estimation of tapioca starch hydrolysis was studied and compared with the Gauss-Newton method. Both methods were employed for determining the model ... -
The past, present & future of concrete construction
(The Institution of Engineers, Malaysia (IEM), 2021)Concrete has always been the major construction material since the historical past, at present and will continue into the future. This presentation covers the period from the first UK design code (CP 114, 1957) in UK to ... -
Pattern recognition of fractal profiles in coagulation-flocculation process of wastewater via neural network
(The Institution of Engineers, Malaysia, 2007-12)The optimum chemical dosage is presumably the goal of every chemical water or wastewater treatment plant as in a coagulation-flocculation process. However, due to difficulties in on line measurement and complexity of ... -
Pelaksanaan kajian gerak dan masa dalam industri pembuatan di Malaysia
(The Institution of Engineers, Malaysia, 2007-03)Artikel ini menerangkan tentang pelaksanaan kajian gerak dan masa dalam industri pembuatan berdasarkan soal selidik yang dijalankan terhadap beberapa syarikat asing dan tempatan di Malaysia. Kajian gerak dan masa ini ... -
Pengesanan kerosakan dalam rangkaian FTTH dengan keupayaan pemprosesan GUI perisian MATLAB
(The Institution of Engineers, Malaysia, 2010-06)Kajian ini menekankan pembangunan antaramuka pengguna bergrafik (GUI) untuk Sistem Pengesanan Kerosakan Terpusat (CFDS) dengan menggunakan perisian MATLAB untuk meningkatkan keberkesanan, kelengkapan dan keboleharapan ... -
Pengoptimuman parameter pengacuan bagi mengurangkan kecacatan jasad anum proses pengacuan suntikan logam (MIM)
(The Institution of Engineers, Malaysia, 2008-06)Parameter penyuntikan bagi menyuntik bahan suapan MIM untuk mengurangkan kecacatan fizikal telah dioptimumkan dengan menggunakan tatacara ortogonal L27 (313). Parameter yang dioptimumkan adalah tekanan penyuntikan, suhu ... -
Perbandingan jumlah kandungan elektron di atas variasi longitud khatulistiwa dan latitud menggunakan model IRI, NeQuick dan data IONEX
(The Institution of Engineers, Malaysia, 2010-06)Pengetahuan mengenai jumlah kandungan elektron (total electron content, TEC) di sesebuah kawasan terutamanya di kawasan khatulistiwa adalah penting bagi pembangunan sistem komunikasi menggunakan lapisan ionosfera. Kajian ...