Browsing by Subject "Temperature"

Now showing items 1-20 of 33

    • 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 ...

    • Climate augmentation of erythemal UV-B radiation dose damage in the tropics and global change 

      Ilyas, M (Indian Academy of Sciences, 2007-12-10)
      Skin cancer (UV carcinogenesis) causing erythemal solar ultraviolet-B (UV-B) radiation dosages received at tropical latitudes are about five times higher compared to mid-latitudes. The tropical environment also experiences ...

    • 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 ...

    • The effect of additives to the densification of natural hydroxyapatite 

      Sri Asliza, M. A; Shahrizal, H; Zaheruddin, K; Azida, Azmi (Universiti Malaysia PerlisSchool of Materials Engineering & School of Environmental Engineering, 2010-06-09)
      The effect of different additives to the microstructure and phase properties of compact natural hydroxyapatite was studied. Compact HA was fabricated from HA powder obtained from bovine bones via calcinations and grinding ...

    • 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 ...

    • The effect of temperature on the electrical conductivity and microstructure behaviour of silver particles 

      A. M., Yunos; G., Omar; M. A, Salim; N. A., Masripan; Mohammed Hussin Ahmed Al-Mola (Universiti Malaysia Perlis (UniMAP), 2020-05)
      Silver conductive ink has been used in the electronics industry due to their potential advantages such as high electrical conductivity and thermal conductivity. However, silver needs to undergo a curing process to reduce ...

    • 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 ...

    • Evaluation on empirical models for the prediction of cyclone efficiency 

      Jolius, Gimbun; Chuah, Luqman Abdullah, Assoc. Prof. Dr.; Choong Thomas, Thomas Shean Yaw, Assoc. Prof. Dr. Ir.; Fakhru’l-Razi, Ahmadun, Prof. Dr. (The Institution of Engineers, Malaysia, 2006-09)
      A numerical simulation on cyclone collection efficiency is presented. The simulations deal with tangential inlet cyclones with relatively low solids loading (<10 g/m3) and for cyclone diameter from 0.01 to 3 m. The ...

    • 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 ...

    • Geometrical characterization and effect of temperature on graphene nanoparticles conductive ink 

      Adzni, Md. Saad; Mohd Azli, Salim; Murni, Ali; Feng, Dai; Siti Amirah, Abdullah; Faizil, Wasbari (Universiti Malaysia Perlis (UniMAP), 2021-08)
      Graphene nanoparticles (GNP) conductive ink has become the main filler material in the formulation of conductive ink. Because of that, various efforts have been performed to obtain the influencing parameters that can ...

    • 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 ...

    • Investigation of causes and characteristics of monsoon extremes in Pakistan: a case study for monsoon 2022 

      Haris Uddin, Qureshi; Syed Muzzamail, Hussain Shah; Mohamed, Yassin; Sani Isah, Abba; Zahiraniza, Mustaffa (The Institution of Engineers, Malaysia (IEM), 2022)
      Apart from the long-term changes in the climate patterns, the extreme weather conditions (heat waves, heavy precipitation, and droughts) have also emerged as a prominent consequence of the global climate change. Pakistan ...

    • IoT based soil nutrient sensing system for agriculture application 

      N. N. C., Othaman; M. N. Md Isa; R., Hussin; S. M. M. S., Zakaria; M. M., Isa (Universiti Malaysia Perlis (UniMAP), 2021-12)
      Rice is the primary food source for millions of Asians and satisfies the most fundamental requirement for human survival. The paddy scarcity has heightened public awareness of the global food problem. Rice yield and ...

    • 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 ...