Browsing Researchers by Subject "Temperature"

Now showing items 1-19 of 19

    • Application of InN based quantum dot in reducing short circuit current variation of solar cell above room temperature 

      Mohd Abdur Rashid, Dr.; Mohd Fareq, Abd. Malek, Dr.; A.N., Al-Khateeb; Rosli, F.A.; Md. Abdullah, Al Humayun; Nur Hafeizza, Ramly (Trans Tech Publications, 2014-01)
      This paper focuses on the applicability of InN based quantum dot in the active layer of the solar cell to reduce the short circuit current variation above the room temperature. We have investigated numerically the effect ...

    • Characterization of porous anodic aluminium oxide film on aluminium templates formed in anodizing process 

      Juyana, A. Wahab; Mohd. Nazree, Derman (Universiti Malaysia PerlisSchool of Materials Engineering & School of Environmental Engineering, 2010-06-09)
      A porous anodic aluminium oxide (AAO) films were successfully fabricated on aluminium templates by using anodizing technique. The anodizing process was done in the mixed acid solution of phosphoric acid and acetic ...

    • Combination of Hargreaves method and linear regression as a new method to estimate solar radiation in Perlis, Northern Malaysia 

      Ismail, Daut, Prof. Dr.; Muhammad Irwanto; Mohd Irwan, Yusoff; Gomesh Nair, Shasidharan; Noor Syafawati, Ahmad (Elsevier Ltd., 2011-11)
      The best way to obtain the solar radiation data of a particular place of interest (POI) is to measure at the specific site continuously and accurately over the long term. However, due to financial, maintenance, calibration ...

    • Effect of pyrolysis on the wettability behaviour of polyethylene terephthalate on petroleum coke 

      Sharifah Shahnaz, Syed Abu Bakar, Dr.; Khanna, Rita, Assoc. Prof.; Sahajwalla, Veena, Scientia Prof.; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Nik Noriman, Zulkepli; Sam, Sung Ting (Scientific.Net, 2012-12)
      In depth investigations has been carried out on thermoplastic polymers, polyethylene terephthalate (PET). The interaction between PET and PC substrate was studied to investigate the effect of oxygen-containing polymer on ...

    • Effect of pyrolysis temperature on the synthesis of carbon fiber from natural organic waste 

      Shahrizam, Saad; Faizul, Che Pa; Mohd Mustafa Al-Bakri, Abdullah; Ruhiyuddin, Mohd Zaki; Murizam, Darus (Trans Tech Publications, 2014)
      Carbon fibers are produced from natural sources of water hyacinth plants that have been dried, ground and sieved to three different particle sizes of 600 μm, 300 μm and less than 300 μm. Through the analysis of data obtained ...

    • Effect of solar irradiance and temperature on photovoltaic module electrical characteristics 

      M., Irwanto; Ismail, Daut, Prof. Dr.; Merdang, Sembiring, Dr. Ir.; Rosnazri, Ali; S., Champakeow; S., Shema (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      The electrical characteristics of photovoltaic (PV) module are dependent on solar irradiance and temperature. It consists of short circuit current, open circuit voltage, maximum power, fill factor and efficiency. This ...

    • Effect of temperature of oxalic acid on the fabrication of Porous anodic alumina from Al-Mn alloys 

      Mohd Nazree, Derman, Dr.; Foo, Kai Loong; Khairel Rafezi, Ahmad, Dr.; Uda, Hashim, Prof. Dr.; Voon, Chun Hong (Hindawi Publishing Corporation, 2013)
      The influence of temperature of oxalic acid on the formation of well-ordered porous anodic alumina on Al-0.5 wt% Mn alloys was studied. Porous anodic alumina has been produced on Al-0.5 wt% Mn substrate by single-step ...

    • Effects of elevated temperatures on the compression strength of nanoclay filled unsaturated polyester resin 

      Fartini, Mohd Suhut; Mohd Shukry, Abdul Majid, Dr.; Mohd Afendi, Rojan, Dr.; Nasrul Amri, Mohd Amin, Dr.; Azizul, Mohamad (Trans Tech Publications, 2014-06)
      The paper describes the effects of the montmorillonite (MMT) fillers commonly known as nanoclay, on the compression properties of unsaturated polyester resins at different weight percentage of nanoclay. Modified resin ...

    • Experimental investigation of photovoltaic modules cooling system 

      Farhana, Z.; Mohd Irwan, Yusoff; Azimmi, R. M. N.; Nurul Razliana, Abd Razak; Gomesh Nair, Shasidharan (Institute of Electrical and Electronics Engineers (IEEE), 2012-03)
      The electrical efficiency of Photovoltaic (PV) cell depends on its operating temperature during absorption of solar radiation. It is well known that the power and efficiency of PV module usually falls at the rate of 0.5%/C ...

    • Improvement of absorption characteristics of solar cell above room temperature using quantum dot 

      A. N., Alekhateeb; Mohd Abdur Rashid, Dr.; Mohd Fareq, Abd. Malek, Dr.; Md. Abdullah, Al Humayun; Azralmukmin, Azmi (Engg Journals Publications, 2013-10)
      This paper presents a theoretical study on the light absorption characteristics of solar cell. We have analyzed the temperature dependence of the absorption coefficient of light and the percentage of the incident light ...

    • Measurement and simulation of current total harmonic distortion on three-level single phase transformerless photovoltaic inverter 

      Ismail, Daut, Prof. Dr.; Muhammad Irwanto; Tunku Muhamad Nizar, Tunku Mansur; Rosnazri, Ali; Nair, Gomes; Mohd Irwan, Yusoff; Muhammad, Fitra (Universiti Malaysia Perlis (UniMAP), 2012-06-18)
      This paper presents a new topology of three-level transformerless photovoltaic (PV) inverter. It consists of three main circuits; they are a pulse driver circuit, a full bridge inverter circuit and a power factor correction ...

    • Minimization of open circuit voltage fluctuation of quantum dot based solar cell using InN 

      Farah Ayuni, Rosli; Mohd Abdur Rashid, Dr.; Mohd Fareq, Abd. Malek, Dr.; Muzaidi, Othman @ Marzuki; Ahmad Zaidi, Abdullah, Engr.; Md. Abdullah, Al Humayun (Trans Tech Publications, 2013)
      This paper reports the improvement of open circuit voltage stability of solar cell using InN based quantum dot in the active layer of the device structure. We have analyzed theoretically the temperature dependence of the ...

    • Optimization of current total harmonic distortion on three-level transformerless photovoltaic inverter 

      Ismail, Daut, Prof. Dr.; Muhammad Irwanto; Mohd Irwan, Yusoff; Gomesh Nair, Shasidharan; Noor Syafawati, Ahmad (Elsevier Ltd., 2012)
      This paper presents a new topology of three-level transformerless photovoltaic (PV) inverter. It consists of three main circuits; they are a pulse driver circuit, a full bridge inverter circuit and a power factor correction ...

    • Optimization of photovoltaic module electrical characteristics using genetic algorithm 

      Muhammad Irwanto; Ismail, Daut, Prof. Dr.; Merdang, Sembiring, Dr. Ir.; Rosnazri, Ali; Dina Maizana, Maiz Ahmad (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      This paper presents the optimization of PV module electrical characteristics using genetic algorithm (GA). A mathematical modeling was used to characterize the electrical characteristics of PV module. A 180 W, 30 V, ...

    • Relationship between the solar radiation and surface temperature in Perlis 

      Ismail, Daut, Prof. Dr.; Mohd Irwan, Yusoff; Safwati, Ibrahim; Muhammmad Irwanto; Gomesh Nair, Shasidharan (Trans Tech Publications, Switzerland., 2012-06)
      Statistical models for predicting the solar radiation have been developed. In any prediction of the solar radiation, an understanding of its characteristics is of fundamental importance. This study presents an investigation ...

    • Structural and impedance spectroscopy study of Al-doped ZnO nanorods grown by sol-gel method 

      Muhammad, Kashif; Uda, Hashim, Prof. Dr.; Md. Eaqub, Ali; Ala'eddin Ahmad Jaber, Saif, Dr.; Syed Muhammad Usman, Ali; Willander, Magnus, Prof (Emerald Group Publishing Limited, 2012)
      Purpose – The purpose of this paper is to investigate the electrical transport mechanism of the Al-doped ZnO nanorods at different temperatures by employing impedance spectroscopy. Design/methodology/approach – Al-doped ...

    • The temperature effect to the concrete due to the single strike of high electric current 

      Mustaqqim, Abdul Rahim; Abdul Naser, Abdul Ghani; Muhammad Arkam, Che Munaaim; Muhammad Abu Bakar, Sidik; Zulhelmi, Zulkeflee (Trans Tech Publications Ltd, 2016)
      The protection against lightning had been increasingly used in the building to protect the building from the direct lightning impact. One of the methods is to embed the lightning protection cable in the concrete structure. ...

    • Using gibbs standard state free energy and a power regulating device to predict and control the fabrication of nanoporous alumina 

      Alaba Oladeji, Araoyinbo; Azmi, Rahmat, Prof.; Mohd Nazree, Derman, Dr.; Khairel Rafezi, Ahmad, Dr. (VBRI press, 2013-12)
      The basic concept of Gibbs standard state free energy predicts a favorable condition for both room and high temperature fabrication of nanoporous alumina in phosphoric acid electrolyte. The anodization of aluminum foil in ...

    • A voltage reference circuit for current source of RFIC blocks 

      Marzuki, Arjuna; Zaliman, Sauli; Ali Yeon, Md Shakaff (Emerald Group Publishing Limited, 2008)
      Purpose - The purpose of this paper is to design a voltage reference circuit for current source of radio frequency integrated circuit blocks. The voltage reference circuit is called voltage for current source (VCS). ...