Browsing by Author "Ayu Wazira, Azhari"

Now showing items 1-20 of 35

    • Applicability of nano zero valent iron (nZVI) in sono-Fenton process 

      Mohd Raihan, Taha, Prof. Dr.; Abdul Haqi, Ibrahim; Roshazita, Che Amat; Ayu Wazira, Azhari (Institute of Physics Publishing, 2014)
      Fenton process is one of the advanced oxidation processes (AOPs) used to remove complex organic pollutants in wastewater. In this study, instead of iron sulfate (FeSO4), nano zero valent iron (nZVI) was used as a major ...

    • Application of GIS in solar radiation mapping for Malaysia 

      Ayu Wazira, Azhari; Kamaruzzaman, Sopian; Abdul Haqi, Ibrahim (Asian Association on Remote Sensing (AARS), 2007)
      Increasing need for energy resources in addition to the increase in pollution rate caused by usage of conventional energy resources has created new alternative in acquiring energy resources. Even though there are many solar ...

    • Cloud based models in determination of solar radiation: A review 

      Ayu Wazira, Azhari; Kamaruzzaman, Sopian; Abdul Haqi, Ibrahim (World Scientific and Engineering Academy and Society, 2009-07-01)
      Meteorological data has been used in determining of global and diffuse solar radiation for years. Various methods have been developed and proved to be accurately comparable to the measured value. Among all, the most common ...

    • Coagulation-flocculation process for leachate treatment using PAC and alum 

      Salwa, Mohd Zaini Makhtar; Mahyun, Ab Wahab; Ayu Wazira, Azhari; Roslaili, Abd Aziz; Mohammad Tamizi, Selimin (Universiti Malaysia Sarawak (UNIMAS)Faculty of Resource Science & Technology, 2009-08-03)
      Sanitary landfill leachate is considered as heavily polluted industrial wastewater, which has extremely high pollution load that may pollute subsoil and ground water. Special attention must be paid for its perfect collection ...

    • Concrete Sludge Brick 

      Abdul Haqi, Ibrahim; Ayu Wazira, Azhari; Mahyun, Ab Wahab; Salwa, Mohd Zaini Makhtar; Ragunathan Santiagoo (School of Environmental Engineering, 2008-01-09)

    • Effect of graphene oxide on microstructure and optical properties of TiO₂ thin film 

      Azliza, Azani; Dewi Suriyani, Che Halin; Kamrosni, Abdul Razak; Mohd Mustafa Al Bakri, Abdullah; Mohd Arif Anuar, Mohd Salleh; Mohd Fairul Sharin, Abdul Razak; Norsuria, Mahmed; Muhammad Mahyiddin, Ramli; Ayu Wazira, Azhari; Chobpattana, Varistha (IOP Publishing Ltd, 2019-12)
      GO/TiO₂ thin films have been synthesized from titanium (IV) isopropoxide (TTIP) by a sol-gel method. The films were deposited onto a glass substrate using spin coating deposition technique then were subjected to annealed ...

    • Estimation of solar energy potential in East Malaysia by using Satellite Images 

      Ayu Wazira, Azhari; Kamaruzzaman, Sopian; Abdul Haqi, Ibrahim (Universiti Malaysia Sarawak, 2007-12-27)
      Solar energy has been identified as one of the most potential alternative energy resources as Malaysia receives abundant sunshine all year long. Even though there are many solar instruments that can be used in measuring ...

    • Germination of ficus seeds for rehabilitation purposes 

      Ayu Wazira, Azhari; Abdul Haqi, Ibrahim; Ain Nihla, Kamarudzaman (Universiti Sains Malaysia (USM)School of Materials & Mineral Resources Engineering (SMMRE), 2009-06-01)
      Quarrying industries have played an important role in our country for a long time. As the need of quarrying products arises, most companies have been neglecting one of the most important aspects in quarrying, which is the ...

    • Heteroepitaxial growth of vacuum-evaporated Si-Ge films on nanostructured silicon substrates 

      Ayu Wazira, Azhari; Kamaruzzaman, Sopian; Saleem Hussain, Zaidi (Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 2015)
      In this study, a low-cost vacuum-evaporated technique is used in the heteroepitaxial growth of Si-Ge films. Three different surface variations are employed: i.e. polished Si, Si micropyramids and Si nanopillars profiles. ...

    • An investigation of crystalline thin-film Six/Ge 1-x/Si solar cells 

      Adnan K Shafeeque, Ali; Ayu Wazira, Azhari; Kamaruzzaman, Sopian; Saleem Hussain, Zaidi (Institute of Electrical and Electronics Engineers Inc., 2013-06)
      Thin film solar cells have attracted a lot of attention due to their potential for increased efficiency and reduction in cost of material. Thin-film crystalline silicon solar cells are fundamentally limited in efficiency ...

    • Investigation of XeF2 dry etching for contact isolation of screen printed IBC solar cell 

      Mohd Khairunaz; Suhaila, Sapeai; Ayu Wazira, Azhari; Kamaruzzaman, Sopian; Saleem Hussain, Zaidi (Institute of Electrical and Electronics Engineers Inc., 2013-06)
      We demonstrated the use of Xenon Difluoride (XeF2) plasma less vapor etching for isolation of n and p regions in screen-printed interdigitated back contact (IBC) solar cell. The fabrication process is free from lithography ...

    • Isu Pemanasan Global 

      Norazian, Mohamed Noor; Noridah, Yangman; Ain Nihla, Kamarudzaman; Ayu Wazira, Azhari; Nabilah Aminah, Lutpi; Kamarudin, Hussin; Mohd Mustafa Al Bakri, Abdullah; Abdul Haqi, Ibrahim (Penerbit UniMAP, 2012)
      Panasnya hari ini! Pernahkan anda mendengar rungutan atau keluhan seperti ini keluar daripada mulut masyarakat sekitar anda? Atau anda sendiri pernah mengalami hal ini. Anda tidak salah, data-data yang ada memang menunjukkan ...

    • Land suitability mapping for implementation of precision farming 

      Norasmanizan, Abdullah; Mohd Sabri, Hussin; Ayu Wazira, Azhari; Mahmad Nor, Jaafar (Institute of Electrical and Electronics Engineers Inc., 2011-09)
      This paper studies the potential of satellite imagery in mapping of soil compaction and land suitability using Remote Sensing and GIS method. GIS and remote sensing, play an important role in environmental study, monitoring ...

    • Lawatan industri ke JUPEM-Perlis 

      Ayu Wazira, Azhari (Universiti Malaysia PerlisPusat Pengajian Kejuruteraan Alam Sekitar, 2009-06)

    • Lawatan ke Global E-Technic Sdn. Bhd. (Perlis Power Plant) 

      Ayu Wazira, Azhari (Universiti Malaysia Perlis (UniMAP)Pusat Pengajian Kejuruteraan Alam Sekitar (PPKAS), 2008-12)

    • Macroflora as a Bio-Trap for Airbone Particulate Matter 

      Abdul Haqi, Ibrahim; Nor Azam, Ramli; Ayu Wazira, Azhari; Norazian, Mohamed Noor (Universiti Malaysia Perlis (UniMAP), 2007-06-09)
      Malaysia has already witnessed numerous tragedies in which a lot of people suffer or died because of breathing bad air quality. As an example, during the haze phenomena in 1997, numerous people suffer from respiratory ...

    • Microstructural studies of doped PEG Ag/TiO₂ thin film 

      Kamrosni, Abdul Razak; Dewi Suriyani, Che Halin; Azliza, Azani; Mohd Mustafa Al Bakri, Abdullah; Mohd Arif Anuar, Mohd Salleh; Norsuria, Mahmed; Chobpattana, Varistha; Ayu Wazira, Azhari (IOP Publishing Ltd, 2019-12)
      Ag/TiO₂ thin film was prepared by the sol-gel method through the hydrolysis of titanium tetraisopropoxide and silver nitrate solution. Various amount of PEG was doped into the solution preparation to study the effect on ...

    • Microstructure evolution of Ag/TiO₂ thin film 

      Dewi Suriyani, Che Halin; Kamrosni, Abdul Razak; Mohd Arif Anuar, Mohd Salleh; Mohd Izrul Izwan, Ramli; Mohd Mustafa Al Bakri, Abdullah; Ayu Wazira, Azhari; Kazuhiro, Nogita; Hideyuki, Yasuda; Nabiałek, Marcin; Wysłocki, Jerzy J. (MDPI AG, 2021-01)
      Ag/TiO₂ thin films were prepared using the sol-gel spin coating method. The microstructural growth behaviors of the prepared Ag/TiO₂ thin films were elucidated using real-time synchrotron radiation imaging, its structure ...

    • A new approach for predicting solar radiation in tropical environment using satellite images - Case study of Malaysia 

      Ayu Wazira, Azhari; Kamaruzzaman, Sopian; Azami, Zaharim; Mohamad Ahmed, Alghoul (World Scientific and Engineering Academy and Society, 2008-04)
      Satellite images have been indentified as an alternative and accurate method for predicting average annual daily solar radiation of a specific location. These images can be use to predict the performance and sizing of ...

    • A new approach for predicting solar radiation in tropical environment using satellite images - Case study of Malaysia 

      Ayu Wazira, Azhari; Kamaruzzaman, Sopian; Azami, Zaharim; AL Ghoul, Mohamad (World Scientific and Engineering Academy and Society (WSEAS) Press, 2008)
      Satellite images have been indentified as an alternative and accurate method for predicting average annual daily solar radiation of a specific location. These images can be use to predict the performance and sizing of ...