Browsing by Year "2000"

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  • Stegemann, J; Perera, ASR; Cheeseman, C; Buenfeld, N [Article-Abstract]
    The acid neutralization capacity of a cement/waste product is important because the integrity of the monolithic matrix and contaminant precipitation are dependent on the maintenance of alkaline conditions. A 1/8 fractional ...
  • Fernando, MARV [Conference-Full-text]
    Large Pelton turbines used in major hydro applications are of high efficiency, in the range of 92% or more. However, Peltons used in mini-hydro applications in Sri Lanka were often found to be of lower efficiency, and of ...
  • Amarasinghe, BMWPK; De Silva, IMBM [Conference-Full-text]
    Membranes and membrane based separation techniques have developed rapidly over the last two decades with a considerable technical and commercial impact. The technology is now widely used for a range of applications including ...
  • Amaratunga, D; Baldry, D; Sarshar, M [Article-Abstract]
    Facilities management operates on the premises that the efficiency of any organisation is linked to the physical environment in which it operates and that the environment can be improved to increase its efficiency. This ...
  • Subramaniam, K; Fernando, S [Conference-Full-text]
    As cashew nut shell liquid (CNSL) is a natural source of phenols, attempts are made in this work to prepare a synthetic polymer resin from the liquid, by treating it with formaldehyde. The polymer resin thus prepared is ...
  • Fernando, MARV [Conference-Full-text]
    Dwindling resources of quality timber made manufacturers to look for alternatives. Species such as Rubber -"Hevea brasiliensis" were found to be good alternatives once treated against "Borer" attack. While expensive ...
  • Tittagala, SR; Navarathna, NPNM [Conference-Full-text]
    A study has been carried out on the types of construction and factors affecting efficiency of metal melting furnaces currently used in the non-ferrous foundry sector with the objective of developing an oil-fired furnace ...
  • Ranasinghe, WMDN; Jayasinghe, MTR [Conference-Full-text]
    Design of continuous prismatic prestressed concrete continuous spine beams is a complex task, primarily due to the secondary moments that occur as a result of the prestressing effects. In prestressed concrete members, it ...
  • Jayasinghe, JAKS [Conference-Full-text]
    YAGI array is a very popular antenna for VHF/UHF applications due to its simple construction. It is extensively used in television and FM radio reception. However, design of YAGI arrays to meet a given set of specifications ...
  • Peiris, HJC [Conference-Full-text]
    A methodology for designing fuzzy logic damping controllers for large practical power systems is presented in this paper. The proposed approach uses (i) the Prony Signal & Transfer Function Identification Technique to ...
  • Kulasuriya, C; Dias, WPS; Hettiarachchi, MTP [Conference-Full-text]
    This Paper demonstrates that the aesthetic concepts of engineering design do not just arise; but that they are derived from various models of aesthetics. It also presents various Proportioning Systems and their application ...
  • Wijayatunga, PDC; Daranagama, DAU [Conference-Full-text]
    A significant proportion of electrical energy generated is utilised in industrial motor drives in addition to it being used for electric lighting and heating. Also, oversized and under-utilised motors in the industrial ...
  • Wijayatunga, PDC; Fernando, WJLS [Conference-Full-text]
    Quantitative reliability evaluation is an important aspect of power system planning and operation. The indices produced in these applications are utilised in a wide range of management decisions throughout a utility. One ...
  • Nanayakkara, SMA [Conference-Full-text]
    This paper reports an experimental method developed to measure the thermal conductivity of concrete. This method involves the measurement of steady state temperature distribution across a cylindrical specimen of concrete ...
  • Jayasinghe, JAKS [Conference-Full-text]
    An Electrical Discharge Machine (EDM) is a vital machine used in manufacture of tools and dies. Its operation is based on discharge of an electrical current across the tool and the work-piece. Due to limitations of the ...
  • Puswewala, UGA; Gunatilaka, IRP; Hapuarachchi, CL; Nandasena, RM [Conference-Full-text]
    Stress distribution and deformation in rock around lined tunnel openings subjected to internal pressure are investigated by using plane strain finite element analysis. Two typical tunnel cross- sections, in the forms of ...
  • Kulathilaka, SAS; Nawagamuwa, UP [Conference-Full-text]
    Internally stabilized earth retaining systems became popular and came into extensive usage over the last two decades due to the many advantages inherited in them. Different forms of internally stabilized earth retaining ...
  • Kukaratna, N [Article-Abstract]
  • Wimalsiri, WK [Conference-Full-text]
    Loading and Stability calculations of ships became a more and more complicated and time consuming process as the ship sizes and design complexity increased. Accurate and efficient methods of evaluating and analysing stability ...
  • Munindradasa, DAI; Amaratunga, GAJ [Conference-Full-text]
    The photoluminescence (PL) in a-C:H:N was measured using a 2.4leV Ar ion laser line for varying N content. The PL results show a lowering of the PL peak energy and a spectral line width broadening as the N content in the ...