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Search results 6461 - 6470 of 14167 matching essays
- 6461: Nuclear Power: Cons
- Nuclear Power: Cons Since the days of Franklin and his kite flying experiments, electricity has been a topic of interest for many people and nations. Nuclear power has been a great advance in the field of electrical production in the last fifty years, with it's clean, efficient and cheap production, it has gained a large share of the world's power supply. However with the ... in the name of profit. Nuclear power is a major pollutant and must be recognized as one. In the 1990's we have many alternatives to Nuclear Power. Solar, wind, hydro and geothermal are all great sources that should be used to limit the use of nuclear power. Although nuclear power on the whole is a clean and efficient, it has many unnecessary drawbacks such as the waste it produces, this ...
- 6462: Iron
- ... the whole sea floor is eventually moved up out of the water. Once out of the water, the iron has formed a land deposit. The biggest iron deposit in the United States is in the Great Lakes. Northern Minnesota is often called the Iron Range. There are two ways iron deposits are located. In the first method special machines that detects the iron's magnetism are used ti find a deposit ... the environment. Once the iron ore is mined it is taken to a refinery and purified. Much of the iron from the Northern Minnesota ranges are loaded on barges at Duluth and shipped via the Great Lakes to port near Pennsylvania, such as Erie and then shipped to cities such as Pittsburgh and Bethlehem. Shipping it here is easier than to ship the coal to make steel as more coal is ...
- 6463: Geothermal Energy
- ... possibility for a human resource. I will be discussing some of these issues, questions, and problems. In the beginning when the solar system was young, the earth was still forming, things were very different. A great mass of elements swirled around a dense core in the middle. As time went on the accumulation elements with similar physical properties into hot bodies caused a slow formation of a crystalline barrier around the ... the hot rocks. The heated water is then pumped from the underground reservoir to the surface. This system is not as effective as others because the temperature that the heated water reaches is not very great. Geopressured geothermal systems are similar to hydrothermal systems. The only difference is the pressure of the high temperature reservoir. Geopressured geothermal systems may be associated with geysers. Some geopressured geothermal systems reach pressures of fifty ...
- 6464: Flouridation
- ... will benefit one's dental health, but will harm many other aspects of their lives. (Coffel) Works Cited 1. Behrman, A. S., Water is Everybody's Business. Doubleday, New York, 1968. 2. Coffel, Steve, The Great Fluoride Fight, Garbage, Vol. 4, Issue 3. Dovetail Publishers, New York, 1992. 3. Waldbott, George L., Fluoride: The Great Dilemma. Coronado Press, Kansas, 1978. 4. Yiamouyiannis, John, Fluoride: The Aging Factor. Health Action Press, Delaware, 1986.
- 6465: CODEINE (C18 H2, NO3 H3PO4 1/2 H2O)
- ... tasks such as driving a car or operating machinery. (3) Patients receiving other narcotic painkillers, general anesthetics, tranquilizers, or other central nervous system depressants, including alcohol with codeine may exhibit an additive central nervous system depression. Who shouldn't take codeine? Pregnant women should not use codeine because safe use in pregnancy has not been established. Children below the age of three shouldn't be given this drug for that age ... 6 years of age is 1 mg/kg daily given in 4 equally divided doses every 4-6 hours.. What are the signs and symptoms of overdosage? Serious overdose with codeine is characterized by respiratory depression, extreme somnolence progressing to stupor or coma, skeletal muscle flaccidity, cold and clammy skin, and sometimes abnormally slow heartbeat and hypotension. In severe overdosage, circulatory collapse, cardiac arrest and death may occur. Our investigation of ...
- 6466: The Chlorine Debate: How White Do You Want It?
- ... years", says Brad Lienhart, Managing Director of the Chlorine Chemistry Council. The anti-chlorine camp, however, has garnered the support of several influential scientific, environmental, and international organizations, including the International Joint Commission on the Great Lakes, the Paris Commission on the North Atlantic (a multinational-level meeting of 15 European governments and the European Community), the 21-nation Barcelona Convention on the Mediterranean, and the American Public Health Association. Strong ... proven and effective alternative is developed to take the place of that chemical. Most everyday things would have to drastically be altered to make suit for a complete chlorine ban, and that would take a great deal of time, effort, and money to do. If a ban on chlorine was implemented, who would be responsible for the cost and maintenance of switching the equipment: the consumer, the producer, Greenpeace and other ...
- 6467: Historical Development of Atomic Structure
- ... physics with the British physicist Paul A. M. Dirac for his contribution to the development of quantum mechanics. Through the centuries that have passed, minds have been boggled, countless questions have been answered, and many great minds conceived, however, there is no doubt that there is still much to discover about the atom, such as sub-atomic, elementary particles. A whole new generation of great scientists is still to come, to explore and unlock the universe's secrets.
- 6468: Acetylation of Ferrocene
- ... transferred the lower organic potion into another vial with a little sodium sulfate for drying. Then we transferred this to a tarred vial and dried off the MeCl in a nitrogen stream. MeCl is a great solvent because it evaporates easily (bp. ca. 48ψC). Moreover, we used a nitrogen steam so that we could minimize the amount of moisture in regular air from being reintroduced into the sample. This was our ... results of these TLC Rf's tell us that our separation was pretty successful. As one can see, F1 spot A's Rf, we have at least 90% of FC in separated mixture. This is great. It means the extraction was a success. The F2 percent difference is 2.7%. This means that over 97% of this material are indeed AFC. OUTSTANDING results. This was a success for, one of the ...
- 6469: Aluminum: The Element
- ... use it from foils to cans, to space shuttles. This element is very, very useful and is recyclable. We use aluminum for conductors as well. We use it to weld hardware together because of their great conductability. Since the early 1800's we have seen aluminum as a great metal with countless uses. But we can't make all the aluminum we need, although there is a lot on Earth, we have a certain amount that we can run out of if we don ...
- 6470: Nuclear Weapons
- ... the United States in World War II. After the war, production of such weapons and the development of a more destructive bomb, the hydrogen bomb, caused worldwide concern. The atomic bomb was a bomb with great explosive force from the sudden release of nuclear energy through the fission, or splitting, of heavy atomic nuclei. The first atomic bomb was tested by the United States near Alamogordo, New Mexico. In the final stages of World War II, the U.S. dropped atomic bombs on Hiroshima and on Nagasaki three days later to force Japan to surrender. The explosion produces great amounts of heat, a shock wave, and intense neutron and gamma radiation. The region of the explosion becomes radioactively contaminated, and wind-borne radioactive products may be deposited elsewhere. The hydrogen bombs an explosive weapon ...
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