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 FIRST IRON LUNG
July 29, 1927 - United States
(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.
MEMBER LOGIN
RANDOM QUOTES
The wealth of the nation
by Earth Day, Gaylord Nelson
"...The wealth of the nation is its air, water, soil, forests, minerals, rivers, lakes, oceans, scenic beauty, wildlife habitats and biodiversity that'as all there is. That'as the whole economy. That'as where all the economic activity and jobs come from. These biological systems are the sustaining wealth of the world...."
No Man is Above the Law
by Theodore Roosevelt
"..."No man is above the law and no man is below it; nor do we ask any man's permission when we require him to obey it. Obedience to the law is demanded as a right; not asked as a favor."..."
RANDOM FACTS
Cancer Facts & Figures
about Besides Lung Cancer
Besides lung cancer, tobacco use also increases the risk for cancers of the mouth, lips, nasal cavity (nose) and sinuses, larynx (voice box), pharynx (throat), esophagus (swallowing tube), stomach, pancreas, kidney, bladder, uterus, cervix, colon/rectum, ovary (mucinous), and acute myeloid leukemia.
Drug Abuse
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.
Medicine :
Choose Your Color :
Category Information : Medicine
This is our Medicine category. If you are interested in Medicine, feel free to browse these listings. If you have a site that fits within this category, Submit it for inclusion.
Locum Staffing works closely with clients throughout the UK to provide the best options when it comes medical recruitment. New short and long term GP locum vacancies available.
Animal and Pet related classified ads listing pet and animal related products and information only. Our Classified Ads are indexed by state and city and are searchable by zip code. Search for pet r...
Open a Citizens Bank account and discover convenient online banking features and the personal finance options that you deserve. Choose a checking account or high interest savings account that fits ...
Horseback riding in Las Vegas. Choose from rides that include breakfast, lunch, or a sunset steak dinner. Overnight Las Vegas horseback tours also available.
The course of the River Thames as we know it today was created about 10,000 years ago, by melt water from the ice-sheets that covered much of the United Kingdom during the last ice-age...
Search engine is the term with which we are accustomed with very much. But the web directory is not that same. The web directories are older than search engines according to the time of their invention.