In patients who are unable to complete a high level of exercise because of physical limitations, stress to the heart is provided by pharmaceutical or chemical stimulation of the heart. Stress Echo is made up of three parts: A resting Echo study, Stress test, and a repeat Echo while the heart is still beating fast. Exercise stress testing usually employs the Bruce or a similar protocol, as described in the Regular Stress Test section.
Eiffel Tower history : the beginning. The most popular tourist place in Paris has stretched to the Parisian skies for 127 years. Although now symbolic of France, it wasnât meant to last. Without a doubt, the turning point in the Eiffel Tower history took place at the 1889 Universal Exposition.
The tower was built as the entrance arch to the 1889 World's Fair. The architect, Gustave Eiffel, had a permit for the tower to stand for 20 years; it was to be dismantled i â¦ n 1909, when the City of Paris would take over ownership.amed after its designer, engineer Gustave Eiffel, the Eiffel Tower is the tallest building in Paris. The structure was built between 1887 and 1889 as the entrance arch for t â¦ he Exposition Universelle, a World's Fair marking the centennial celebration of the French Revolution.