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Results 4461 - 4470 of 4619 for CO in H2
  • Platinum - History and Investment
    Article - 23 Jan 2002
    With a history much shorter than that of gold, its use and discovery in the 1700's is described. Development of the platinum market through the 1800's and into more modern times is also covered....
  • Tungsten Carbide - An Overview
    Article - 21 Jan 2002
    Scheele discovered “Tungsten” in 1781; however, it took 150 years more before the efforts of Scheele and his successors led to the use of tungsten carbide in the industry.
  • An Overview of Gallium
    Article - 18 Dec 2001
    Gallium is present as a trace element in germanite, sphalerite, diaspore, coal, and bauxite. Although this metal occurs naturally in approximately the same amount as lead, it is extensively dissipated...
  • Fermium
    Article - 18 Dec 2001
    Fermium is an actinide element whose properties have been extremely difficult to measure due to short half lives of the isotopes. It has no known commercial value.
  • Einsteinium
    Article - 18 Dec 2001
    Einsteinium is a member of the actinide series of elements. While several isotopes have been identified, it has no known commercial value.
  • Photovoltaics - Safety Issues
    Article - 14 Dec 2001
    Safety issues associated with the manufacture, installation and usage of solar cells are addressed in the article.
  • Energy Payback from Photovoltaic Systems
    Article - 14 Dec 2001
    This article explores the issue of how long a photovolatic system must operate to account for energy and pollution created in the manufacture of the system. It takes into account the different...
  • The Powder Injection Moulding Process
    Article - 29 Nov 2001
    Powder injection moulding (PIM) and powder co-injection moulding (PCM) are similar to polymer injection moulding. They are used to produce shaped components from powders and are suited to ceramic,...
  • Ceramic Brazing
    Article - 29 Nov 2001
    Ceramic brazing techniques are used to join ceramics to other materials. Sometimes the use of intermediate layers are required to increase wetting of the materials to enable creation of a suitable...
  • Concrete Reinforced with Fibre Reinforced Plastic
    Article - 27 Nov 2001
    Fibre reinforced plastic (FRP) concrete provides an alternative to steel reinforced concrete. It overcomes corrosion problems, possesses high strength and low stiffness and cracks in the matrix are...

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