Kangar, Malaysia

University Malaysia Perlis

www.unimap.edu.my
Kangar, Malaysia

Universiti Malaysia Perlis or UniMAP is in the northern most part of the Malaysian peninsula, less than 35 km from the Thailand border in the town of Arau, Perlis. UniMAP is a government-funded Malaysian public university. Wikipedia.

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The photocatalytic, transport, photophysical, and structural properties of Tl10Hg3Cl16 single crystals are investigated by means of density functional theory in order to investigate its suitability to be used as an active photocatalyst. The calculation show that this compound possesses a narrow direct band gap. The obtained values of the fundamental energy band gap are about 0.82 eV (LDA), 0.88 eV (PBE-GGA), and 0.97 eV (mBJ). The absorption edge of Tl10Hg3Cl16 occurs at λ = 742.3 nm, and the optical band gap is estimated to be 1.67 eV. For use in photocatalytic water splitting, the optical band gap of the photocatalyst material must be sufficiently large to overcome the endothermic character of the water-splitting reaction, i.e., higher than 1.23 eV therefore, Tl10Hg3Cl16 (Eg = 1.67 eV) is expected to be an active photocatalyst. The calculated density of states reveals the orbitals that form the conduction band minimum and the valence band maximum, and the existence of hybridization. The transport properties are calculated to investigate the suitability of Tl10Hg3Cl16 as a thermoelectric power generator, as an active photocatalyst for clean energy resources, and as an ultrafast scintillator for medical imaging. © 2017 Elsevier Inc.


Quadir G.A.,University Malaysia Perlis | Badruddin I.A.,University of Malaya
AIP Conference Proceedings | Year: 2016

This work is continuation of the paper Part A. Due to large number of results, the paper is divided into two section with section-A (Part A) discussing the effect of various parameters such as heat transfer coefficient parameter, thermal conductivity ratio etc. on streamlines and isothermal lines. Section-B highlights the heat transfer characteristics in terms of Nusselt number The Darcy model is employed to simulate the flow inside the medium. It is assumed that the heat transfer takes place by convection and radiation. The governing partial differential equations are converted into non-dimensional form and solved numerically using finite element method. © 2016 Author(s).


Badruddin I.A.,University of Malaya | Quadir G.A.,University Malaysia Perlis
AIP Conference Proceedings | Year: 2016

In this paper, investigation of heat and mass transfer in a porous cavity is carried out. The governing partial differential equations are non-dimensionalised and solved using finite element method. The left vertical surface of the cavity is maintained at constant temperature and concentration which are higher than the ambient temperature and concentration applied at right vertical surface. The top and bottom walls of the cavity are adiabatic. Heat transfer is assumed to take place by natural convection and radiation. The investigation is carried out for assisting flow when buoyancy and gravity force act in same direction. © 2016 Author(s).


Badruddin I.A.,University of Malaya | Quadir G.A.,University Malaysia Perlis
AIP Conference Proceedings | Year: 2016

The present study is carried out to investigate the effect of radiation and viscous dissipation in a square porous annulus subjected to outside hot Th and inside cold Tc temperature. The square annulus has a hollow section of dimension D×D at the interior of annulus. The flow is assumed to obey Darcy law. The governing equations are non-dimensionalised and solved with the help of finite element method. Results are discussed with respect to viscous dissipation parameter, radiation parameter and size of the hollow section of annulus. © 2016 Author(s).


Patent
University Malaysia Perlis, King Abdulaziz City for Science and Technology | Date: 2014-07-09

A method of soil stabilization includes mixing a geopolymer material with an alkaline activator and adding 5 to 30 percent by weight of the mixture to a soil.


Patent
King Abdulaziz City for Science, Technology and University Malaysia Perlis | Date: 2013-10-02

A method of coating a geopolymer onto an article that is made of high heat applicable material, the method comprising the steps of providing geopolymer paste prepared from reacting fly ash-derived pozzolanic material with an alkaline activator solution; coating the geopolymer paste onto the article; curing the coated article; and sintering the cured article at a temperature ranging from 100C to 1500C.


Patent
University Malaysia Perlis, King Abdulaziz City for Science and Technology | Date: 2013-02-11

The invention is related to a building block for use in interlocking with a plurality of similar building blocks for constructing a building. The building block includes a front face, a rear face, an upper face, a lower face, a first end and a second end. The building block also includes at least one substantially vertical hollow (web) and at least one substantially horizontal channel, wherein the at least one horizontal channel is disposed along one of the upper face and the lower face. In addition, each of the first end and the second end includes at least one header face, wherein at least one the header face can be one of a substantially planar face, a male header face and a female header face. Each of the male header face and the female header face includes one or more patterns for interlocking.


Patent
University Malaysia Perlis, King Abdulaziz City for Science and Technology | Date: 2014-08-04

A geopolymer brick fabrication system comprising a mixer (100) having a tank (101) which comprises a closeable bottom outlet (102) and an inner surface coated with saturated polyester resin that is resistant against corrosive geopolymeric material for receiving the geopolymer raw material to be mixed by shaft (103) driven by a spindle motor (104) a moulding section (200) to receive the mixed geopolymer raw material through a slanted conveyer (105) upon opening of the closeable outlet (102) for shaping the mixture under pressure inside a mould (201) to obtain a geopolymer brick and a curing section (300) having a moving platform (301) across a curing chamber (302) to simultaneously cure and transport the brick thereon.


Patent
University Malaysia Perlis, King Abdulaziz City for Science and Technology | Date: 2016-09-07

An anti-radiation concrete comprises a geopolymer, a mixture of at least two alkaline activators, fine aggregate, and coarse aggregate from high density metal-containing rocks.


Patent
King Abdulaziz City for Science, Technology and University Malaysia Perlis | Date: 2015-11-25

An anti-radiation concrete comprising a geopolymer is described. In an implementation, the anti-radiation concrete comprises a mixture of at least two aqueous alkaline activators, fine aggregate, and coarse aggregate from high density metal-containing rocks.

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