(Electric Respirator) was installed at Bellevue hospital in New York for the post war polio epidemic. The first iron lung was developed at Harvard University by Phillip Drinker and Louis Agassiz Shaw built with two vacuum cleaners. The iron lung is a negative pressure machine which surrounds the patient's body except for the head, and alternates a negative atmospheric pressure with the ambient one, resulting in rhythmic expansion of the chest cage (and thus inhalation) in response to the negative extra thoracic pressure. During periods of ambient extrathoracic pressure, the lungs deflate. This type of machine is rarely used today.
AMERICA'S FIRST ASPHALT PAVEMENT
July 29, 1870
Was laid in Newark, N.J. Previously, coal tar was used for many pavements laid in the 1860s. The first recorded asphalt pavement in the U.S. was a sand mix placed in front of the City Hall in Newark, N.J., in 1870. Edmund J. DeSmedt, a Belgian chemist (who became the inspector of asphalt and cements for the District of Columbia) held a U.S. patent for this asphalt paving method, granted on 31 May 1867. In that century most roads, even in cities, were wide dirt pathways, severely affected by weather. Smooth surfaced asphalt roads originally were for the benefit of bicyclists. By 1904, only 141 miles were surfaced, but commonplace by 1916. Natural asphalt deposits were originally used, but almost all of the asphalt used commercially is now made from petroleum.
The Real Differences
by William J. Clinton on Dec 31, 1969
"..."The real differences around the world today are not between Jews and Arabs; Protestants and Catholics; Muslims, Croats, and Serbs. The real differences are between those who embrace peace and those who would destroy it; between those who look to the future and those who cling to the past; between those who open their arms and those who are determined to clench their fists."..."
God Gives You
"...God gives You…
12 Month of Happiness, 52 Weeks of Fun, 365 Days Success, 8760 Hours Good Health, 52600 Minutes Good Luck, 3153600 Seconds of Joy…and that’s all! ”..."
about Cancer Prevention & Early Detection Facts
Smokeless tobacco products are a major source of cancer-causing nitrosamines and a known cause of human cancer. They increase the risk of developing cancer of the mouth and throat, esophagus (swallowing tube), and pancreas.
about Facts about Drugs
Facts about drugs can protect against drug abuse. Legal drugs, such as alcohol and tobacco, kill more people than illegal drugs. Tobacco (smoking cigarettes) kills more people than any other drug. Illegal drugs including heroin, cannabis, ecstasy and amphetamines can have unknown or dangerous ingredients. Mixing drugs, especially with alcohol, can be fatal.
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Friendship poems happen to be just the best medium of expressing eternal friendship to that special friend. You can let all the love and affection you possess flow out, right onto the paper lying in front of you, through a sweet little friendship.