... Date of Discovery – Circa 3000 BC ? Discover – Unknown ? Name of Origin – From the Old English word geolo (yellow) ? Symbol Origin – From the Latin word aurum (gold) ? Uses – electronics, jewelry, coins ? Obtained From – crust of the earth, copper ores Atomic and Chemical Properties: In it’s usual state – atomic mass number 197 – gold is stable. However, there are radioactive (unstable) isotopes of mass number 186 to 196 and 198 to 203. Gold normally exhibits a chemical valence of one or three. Gold is the “noblest” of the noble metals (gold, platinum, palladium, and rhodium), so termed ...
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... in the 1960s from Asian genetic researchers, and the term was dropped from scientific use. Instead, the condition became "Down's syndrome." In the 1970s, an American revision of scientific terms changed it simply to "Down syndrome," while it still is called "Down's" in Europe. In the first part of the twentieth century, there was much speculation of the cause of Down syndrome. The first people to speculate that it might be due to chromosomal abnormalities were Waardenberg and Bleyer in the 1930s. But it wasn't until 1959 that Jerome Lejeune and Patricia Jacobs, working independently, first determined the cause to be trisomy of the 21st chromosome. Cas ...
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... event which the eye beholds-with humans it should be the same thing. People should not feel sad seeing their elder loved ones change their colors and whither but rather rejoice from the knowledge that they lived a magnificent life and their death is merely the start of a new beginning. After all the leaves have fallen, and the ground is littered in seas of immense color, the very structure that carried the leaves remains-the trees. They live on long after the leaves have fallen and died and remind us that no matter how long, cold, and terrible the winter is a new spring will come. Even though loved ones die and leave the earth behind the memory of them still remains ...
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... Kenneth Arnold spotted something that would change his life forever. Just north of his position flying at an altitude of 9,500 feet and an unprecedented airspeed of 1,700 mph he spotted nine circular aircraft flying in formation. According to his estimate the aircraft were approximately the size of a DC-4 airliner ( Jackson 4). This account was the first sighting to ever receive a great deal of media attention. This sighting gave birth to the phrase "flying Saucer" coined by a reporter named Bill Begrette. Although not the first UFO sighting in history, Kenneth Arnolds account is considered to be the first documented UFO sighting. The followi ...
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... alcohol presents,it is still in countless social cirles. Alcohol penetraes all ages, educational, occupational, and socioeconomical boundaries. Each year it is estimated that ten percent of all deaths are related to alcohol abuse. Am astonishing fifty percent of all major automobile accidents, and murders are associated with alcohol. On and on the statistics point to the enormous dangers of alcohol, yet it is a legalized drug. As bleak as this problems seems to be on society as a whole, it is also rueful for the poor soul who is alcohol dependent. The life span of the alcoholic is about ten years shorter than the non-drinker. The lifetime prevalence for in the ...
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... due to hyperacute rejection. This process clots the blood, by forming antibodies that attach to the endothelium of the blood vessels in the organ. The complement system creates gaps in vessels, allowing gaps to form and clots to accumulate. Therefore, a complement inhibitor was developed as the gene was cloned, introduced into pigs whose cells produced this protein. Another thing discovered, was that the cells lining the pig vessels have a sugar molecules called alpha-galactose, and humans have lots of antibodies against alpha-gal. Some are thinking of knocking out the gene for alpha-gal and replacing it with the human gene for type O blood sugar. One other stumblin ...
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... dyslexia. Seeking help through organizations. What exactly is dyslexia? “The word dyslexia is derived from the Greek “dys” meaning poor or inadequate and “lexis” meaning language. Dyslexia is a learning disability characterized by problems in expressive or receptive, oral or written language”(Wilkins URL). Simply put, dyslexia means trouble with reading, writing, and spelling. Dyslexia is not stupidity, laziness, lack of interest, or anything to be ashamed of. Dyslexia is not a disease; it has no cure and it will not go away. It knows no age, gender, or class boundaries. “There is a significant disproportion between the sexes, however. The proporti ...
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... that will carry on through to the next generation. There have been enough sicknesses and fatalities directly related to the use of methyl bromide for the phase out of the pesticide to be considered a worldwide emergency. The producers and users of the substance argue that phasing out the pesticide will cause will be economically disastrous, but clearly their view does not take into account the devastating effect on the ozone layer and the health of humans by the use of this deadly fumigant, the cost to the community far out ways the cost to the users. So what is the alternative? There is no one single alternative for all of the uses of methyl bromide, but th ...
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... mistake. He saw the people raising the power back up to 100%. He tried to explain that there could be another accident if they raised the power all the way because of a problem with the pumps. The people didn't believe Jack and were starting to raise the power up again. When Jack saw what they were doing he grabbed the security officer's gun and forced everyone out of the control room. After he locked the door he lowered the power down to 75% so the pumps wouldn't break. Jack agreed to have a one on one interview with Kimberly so the public would be warned. While the camera crew was on their way to do the live interview so was the S.W.A.T. team to get Jack out of t ...
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... One such scenario involves the growing number of small mammals which ate dinosaur eggs, and therefore caused the dinosaurs' birth rate to drop. The birth rate became smaller than the death rate and the dinosaurs died out. This, however, is not a plausible scenario. This would only account for the dinosaurs, but not all the other creatures of that time. Paleontologists needed to come up with a more plausible and devastating theory that would include the other creatures that died out 65 million years ago. There have been several major theories that have come about that can all be substantiated. Any one of these events, theorized by paleontologists, ...
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