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    THE SIAMESE TWINS
    August 16, 1829 - Boston, USA

    The original siamese twins, Chang and Eng Bunker, arrived in Boston aboard the ship Sachem to be exhibited to the Western world. They were born of Chinese parents in Siam (Thailand). Upon immigrating in to the U.S., they adopted Bunker as their surname. They were joined at the waist by a band of cartilage, about 8 in. circumference and 4 in. long. Only after their death was it found that this could have been easily separated. Robert Hunter, a British merchant, discovered them in 1829 and contracted with them to be exhibited as a curiosity in a world tour. Later, they went into business for themselves. In 1839, they settled in Wilkesboro, N.C., became US citizens and married two sisters with whom they raised 10 children.

    COMMUNIST INFILTRATION SOUTH AMERICA
    August 16, 1960 - San Jose, Costa Rica

    In San Jose, Costa Rica foreign officials of the American republics met to discuss problems such as the Soviet Union's infiltration of Cuba and Venezuela. Communism was illegal in Costa Rica, but there were 300 card carrying communists in the country. During the conference police dispersed 100 communists demonstrating outside of the ministers hotel.

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    by John Adams

    "...The Revolution was effected before the War commenced. The Revolution was in the minds and hearts of the people; a change in their religious sentiments of their duties and obligations. This radical change in the principles, opinions, sentiments, and affections of the people, was the real American Revolution...."

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  • 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. Harvard Medical School
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Regardless of whether you're a skilled heating technician or perhaps are interested in the Heating and cooling marketplace then this article may be for you.

ARTICLE CONTENT :

Whether you are an experienced heating technician or simply just have an interest in the HVAC sector then this write-up is designed for you. It'll provide you with a backdrop to the HVAC sector to make sure you will be more aware about the areas it encompasses. The first aspect we are going to take a look at is the topic of heating. What exactly do we mean by heating? It does depend upon what you will be heating up. As an example if you are looking to warm up the front room in your home on a cold winters night then you may just need a portable heating device. However if you are looking to heat a larger area you might need to use something else entirely.

Many buildings use a central heating system to supply heat. This approach might use a central heating boiler, heat pump or possibly a furnace. Heat created will then be dispersed using a system of piping or ducts. The dispersal network will be chosen dependant upon the building that is being heated up and the type of central heating unit in use. The second letter in the abbreviation HVAC is V for ventilation. Ventilation comes in various forms but is going to fit in 1 of 2 areas. Either forced (also called mechanical) ventilation or natural. Mechanical ventilation can be achieved through the use of fans to either remove air or to inject fresh air in to a room.

Natural ventilation is much easier to achieve, believe it or not as simple as opening up a window. However typically this will be accomplished by either a vent or even air bricks. One benefit of natural air flow is it can help to eliminate the spread of airborne diseases such as the flu virus. Another good rationale to implement natural ventilation is the fact that it truly is inexpensive plus relatively easy to operate. Ventilation is essential in establishing a heating system. The explanation for this is whenever there is very poor ventilation then there could be a build-up of gases.

This might trigger smaller challenges including ineffectiveness in the heater or larger challenges., for instance a large amount of carbon monoxide might cause poisoning or possibly loss of life. Last of all we come to the air conditioner component of HVAC. Air conditioning may be put in position with fans but a majority of solutions operate in the same basis as the air-con inside your car. This process usually operates by using a special fluid in pipes. As this liquid warms up it'll take in the heat when it turns into a gas. This'll then travel around the system as a gas to become re-condensed, starting the complete process once again.

The fantastic thing about some air conditioning units is this technique can be altered to produce heating instead. Of course this will not work with all air conditioners but it's a feature to be familiar with. So there you have every one of the aspects that comprise HVAC, discussed in a little more detail. However this is merely an outline. Next, to be able to learn even more details regarding

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