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Results 511 - 520 of 521 for Waste treatment
  • Article - 16 Aug 2003
    Sapphires are well known gem stones. The stages in their processing, such as grading, heat treatment and marketing are discussed. Characteristics and colours are also mentioned.
  • Article - 21 Jan 2002
    A comprehensive overview of tungsten including history, occurrence, deposits, supply, mining and benficiation, prising, processing, recycling, toxicity and applications.
  • Article - 26 Oct 2001
    Vinyl has many uses in cars and is used for several reasons. Some include cost advantages, environmental reasons and recyclability. Some applications include body mouldings, under bonnet wiring,...
  • Article - 5 Jun 2001
    Paper, natural fibres, glass, metals and many plastics are used as packaging materials. The reasons for their use and developments in the packaging industry are explained.
  • Article - 8 Nov 2013
    For more than thirty years or so, heavy metals have been considered as potential toxic environmental contaminants.
  • Article - 4 Sep 2013
    Alloy 690 is a high-chromium nickel alloy that exhibits excellent resistance to many corrosive aqueous media and high temperature environments. It has good fabrication characteristics, metallurgical...
  • Article - 9 Apr 2013
    Arsenic trisulfide is an inorganic compound with the chemical formula As2S3. It occurs in a bright yellow mineral named as orpiment and a red-orange mineral called as realgar.
  • Article - 10 Jan 2010
    The nuclear industry is at the eye of a perfect storm with fuel oil and natural gas prices near record highs, worldwide energy demands increasing at an alarming rate, and increased concerns about...
  • Article - 31 Oct 2001
    PVC is the most widely used material for water delivery, sprinkler systems and sewage transport due to its reliablity and durability.
  • Article - 22 Sep 2005
    Much effort and funding by the government and private sectors are being allocated towards making Malaysia as a centre of education in South East Asia region. The various universities and colleges in...