refrigeration

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    • refrigeration

    • 11.

      Extraction of Sodium and Uses of Its Important Compounds


      by Dr.Badruddin Khan - 2008-10-27
      Sodium compounds had been known for some time prior to 1807, when English chemist Sir Humphrey Davy (1778-1829) succeeded in isolating sodium itself. The element is represented by a chemical symbol (...
    • 12.

      Hvac Online Communities


      by Kristin Kronstain - 2008-10-30
      Online communities are great for today's business professionals. The web is no longer just a place for people to shop online or get the latest weather update, but a place for business professionals t...
    • 13.

      Top 3 Benefits Of Arizona Air Conditioning Program


      by William Hauselburg - 2009-01-24
      There are air conditioning training courses everywhere. With the huge popularity rise of refrigeration, more people are interested in getting trained in air conditioning and refrigeration technologies...
    • 14.

      Education Articles - The Everyday Heroics of Trade School Trained HVAC Technicians


      by WILLIAM HAUSELBERG - 2010-07-30
      The Everyday Heroics of Trade School Trained HVAC TechniciansWhen it comes to the comfort level of your home or business, a great deal is dependent on the heating, air conditioning and ventilation sys...