1 Problem: The tissue surrounding the IV insertion site is swollen, pale, and cool to the touch. 2  Possible cause: Unintentional administration of solution or medication into the surrounding tissue. 3  Assessment: Leaking from the IV site with slowing or occlusion of fluid flow. Possible cause: Inflammation of the vein with possible clot formation due to trauma, bacteria, or irritating solutions. 2  Assessment: The patient reports tenderness, burning, and irritation along the accessed vein. 3  The rate of infusion has slowed.
While the Spaniard first patented a steam-operated machine for use in mining, an Englishman is usually credited with inventing the first steam engine. In 1698, Thomas Savery, an engineer and inventor, patented a machine that could effectively draw water from flooded mines using steam pressure.
James Watt, in 1781, patented steam engine that produced continued rotary motion and the power about 10 hp. It was the first type of steam engine to make use of steam at a pressure just above atmospheric to drive the piston helped by a partial vacuum. steam engine is a heat engine that performs mechanical work using steam as its working fluid. Using boiling water to produce mechanical motion goes back over 2000 years, but early devices were not practical.