Browsing Journal Articles by Title
Now showing items 1889-1908 of 2800
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Optimization of thaumatin extraction by aqueous two-phase system (ATPS) using response surface methodology (RSM)
(Elsevier B.V., 2008-09-22)The work attempts to study and optimize aqueous two-phase system (ATPS) made of polyethylene glycol (PEG)/sodium sulfate and PEG/potassium phosphate. Five factors (PEG's molecular weight, PEG's concentration, pH, concentration ... -
Optimization of the isolation of extracellular vesicles via dielectrophoresis: A preliminary analysis
(Universiti Malaysia Perlis (UniMAP), 2020-12)Extracellular vesicles (EVs); 30 nm to 1 micrometer in size; has gained its attention as their role as biomarkers and communicator from one cell to another. The importance of early detection for diseases is highly integral ... -
Optimization of the plastic injection molding parameters for sport equipment by using design of experiment
(Praise Worthy Prize S.r.l., 2013-03)This Paper, research about the defect on plastic product in injection molding process. During producing a product using injection molding process, various of defects such as warpage, weld lines, shrinkage and sink mark can ... -
Optimization of the Temperature Synthesis of Hydroxyapatite from Indonesian Crab Shells
(Universiti Malaysia Perlis (UniMAP), 2019-01)Hydroxyapatite (HAp) [Ca10(PO4)6(OH)2] is a ceramic class of material widely used for medical applications. The HAp has been synthesized from Indonesian crab shells using a precipitation method at different temperatures ... -
Optimization on parameter settings in determining warpage factors of a side-gated thin shallow part injection molding for PP, ABS & PC+ABS materials
(Praise Worthy Prize S.r.l., 2012-05)The injection molding process of thin shallow part requires several concerns in order to produce a quality output. In part of determining the best parameter settings, among other considerations that need to be taken are ... -
Optimization Study and Characterization of Microcrystalline Cellulose Isolated from Coconut Husk via Hydrolysis using Ionic Liquid
(Universiti Malaysia Perlis (UniMAP), 2018)This paper reports the optimization study and characterization of microcrystalline cellulose (MCC) isolated from coconut husk via hydrolysis using ionic liquid. Three process parameters, namely solvent concentration, ... -
Optimization the annealling time of membrane PSF19%DMF for palm oil mill effluent treatment
(Universiti Malaysia Perlis, 2016)The membrane that produced is expected to be used for separation the particles that having size of 0.01 to 0.1 μm with MWCO range of 200-300 from the solution as industries wastewater. The objective of research is to study ... -
An Optimized Low‐Noise Low‐Power Preamplifier for Cardiac Implants
(Universiti Malaysia Perlis (UniMAP), 2018-04)Among various analog circuits, the preamplifier has a prominent role in the analog front end (AFE) circuit of biomedical implantable microsystems for a reliable acquiring of weak biophysiological signals. The AFE acts ... -
Optimizing electroplating process parameter and Sn-Plating thickness uniformity using modified shielding
(Universiti Malaysia Perlis (UniMAP), 2022-03)Uneven plating thickness distribution across plated surface has become a major challenge in electroplating industry mainly due to the complexity of package design. In most cases, controlling the plating thickness uniformity ... -
Optimizing plasmonic characteristics of Ag-AuNPs/Nanohillocks Si Heterostructures for efficient SERS performance
(Universiti Malaysia Perlis (UniMAP), 2020-04)Tunable bimetallic Ag-Au nanoparticles (Ag-AuNPs) and hot spot regions were created through the reduction of Ag-Au ions onto nanohillock silicon surfaces. A set of as-prepared textured silicon substrates with different ... -
The optimum condition for the synthesis of carbon nanofibers on activated carbon to remove lead from aqueous solution
(Universiti Malaysia Perlis (UniMAP), 2019-04)Optimum process condition for the production of Carbon Nanofibers (CNFs) to remove lead ion (Pb) from aqueous solution is reported here. The CNFs were produced on the catalyst (Ni2+) impregnated palm oil-based cheap ... -
Optoelectronic and thermoelectric properties of KAuX5 (X = S, Se): A first principles study
(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
(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 ... -
Optoelectronic properties of GaAs and AlAs under temperature effect
(Elsevier GmbH, 2013-08)An application study of optoelectronic properties as a function of the temperature for GaAs and AlAs according to our model has been presented using empirical pseudopotential method (EPM). The structural phase transition ... -
Organic dye degradation with TiO2 catalyst/AAO template in the presence of H2O2
(Trans Tech Publications, 2013)In this study, anodic aluminum oxide (AAO) fabricated from phosphoric acid electrolyte at ambient temperature was used as the porous template, while a sol gel procedure was used for the preparation of the TiO2 sol with the ... -
Organization of mixed dimethyldioctadecylammonium and choline modifiers on the surface of synthetic hectorite
(Elsevier Inc., 2013-11)Understanding the nature of mixed surfactant self-assembly on the surface of organoclays is an important step toward optimizing their performance in polymer nanocomposites and for other potential applications, where selective ... -
Orientation-based pairwise coarse registration with markerless terrestrial laser scans
(Copernicus Publications, 2019)In this paper, pairwise coarse registration is presented using real world point cloud data obtained by terrestrial laser scanner and without information on reference marker on the scene. The challenge in the data is because ... -
Orthogonal least squares method and its application to nonlinear modeling of automotive engine fuelled with palm oil methyl esters
(Praise Worthy Prize S.r.l., 2013)In this paper, nonlinear mathematical models for an automotive engine fuelled with palm biodiesel (Palm Oil Methyl Ester) are developed. Assuming a discrete time form for the system model, a polynomial Nonlinear Autoregressive ... -
OSCDMA Double Weight Code: a simplified formula code construction technique
(Institute of Electrical and Electronics Engineering (IEEE), 2007)This paper the construction of the double weight (DV) code family, one the recent codes for spectral amplitude coding (SAC) is studied. The DW code family is constructed using a matrix construction technique and a mapping ... -
Oscillatory dynamical switching system of bulk ferroelectrics
(Science Publications, 2005)This study gives a detailed account of calculation of the bulk ferroelectric (FE) oscillatory dynamical system switching for first and second-order phase transition, respectively. All the formalism is delineated in the ...