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Search results 12951 - 12960 of 22819 matching essays
- 12951: Arizona Concrete
- ... to the ancient Egyptians and Romans, but the invention of modern portland cement is usually attributed to Joseph Aspdin, a builder in Leeds, England, who obtained a patent for it in 1824. Currently, the annual world production of portland cement is around 700 million metric tons (Danbury). Many people use the words concrete and cement interchangeably, but they're not. Concrete is to cement as a cake is to flour. Concrete ... textures for use in almost unlimited number of applications. Works Cited A Cement and concrete.@ The 1996 Grolier Multimedia Encyclopedia. CD-ROM. Danbury: Grolier, 1996. Day, Richard. The Home Owner Handbook Of: Concrete and Masonry. New York: Bounty Books, No Copyright Date. Kosmatka, Steven H., and William C. Panarese. Design and Control of Concrete Mixtures. Skokie, Ill.: Portland Cement Association, 1990. Seymore, Dany. President of Show Low Ready Mix. Personal interview ...
- 12952: Vivisection
- ... so they don't scratch (2:55). Testing is conducted to assess the potency, effectiveness, or toxicity of substances that have established or potential usefulness for medical, scientific, or commercial purposes (1:39). For instance, new drugs are tested for efficiency and safety before clinical trials are conducted on humans. Tests on animals are done to establish safety levels for humans of known toxic substances (1:40). Although testing might seem ... animal experimentation. But most philosophers agree that animals should be granted a higher status when people decide to "use" them (11:9). In conclusion, animals should not be viewed as man's gift to the world and, therefore, should not be used excessively without a proper justification. When educating students in grade school, the killing of animals is unnecessary. For educating in high school, college, and graduate school, alternatives can be ...
- 12953: Nuclear Energy and the Environment
- ... to forget that there is only a limited supply of energy in every energy system, and to "overdo" any resource may provide for an unacceptable impact upon global and regional ecology. Thus, if the business world pushes the environment as far as it can go, Ceribus Paribus, please refer to figure 1. Thus, to use petroleum as a substitute for uranium, which is needed to power the nuclear system, would not ... sharp jump in consumer costs when the plants are turned on to pay for the construction costs, plant manufacturers or other loan sources, plus interest. Thus, the cost of electricity may go up three-fold. New plants usually supply substantially more energy than the area requires; meaning that the consumer will be paying for this waste of energy, which is cost per kilowatt hour. It should also be noted that some ...
- 12954: Machiavelli And Plato
- ... as immoral but not the outcome. In the introduction of The Discourses writes, Although the envious nature of men, so prompt to blame and so slow to praise, makes the discovery and introduction of any new principles and systems as dangerous almost as the exploration of unknown seas and continents, yet, animated by that desire which impels me to do what may prove for the common benefit of all, I have resolved to open a new route, which has not yet been followed by any one, and may prove difficult and troublesome, but may also bring me some reward in the approbation of those who will kindly appreciate my efforts. Although ... in The Discourses of a free state or a state of freedom. One without war within the community. It cannot be seen as a science when the education is stunted in such a way that new origins and a complete disregard for past history means education is limited to the time and for what the time represents. Plato s version of political reform in The Republic although would achieve little ...
- 12955: Smuggling of Nuclear Material
- ... War the security of Soviet nuclear weapons and missile materials was based on a highly centralized military system and operating within a strong political authority. The workers back then where well disciplined and each individual new his/her role. The workers were among the best treated and loyal to the Russian military. They are now suffering hardships and are forced to scavenge anything to pay for their food, rent and social services. A new trend is already occurring with some of the workers . There are those that will seek employment out of the nuclear field and in the commercial sector, where salaries are higher. Then the unfortunate who lose ... themselves, to make a quick buck. Most suppliers of nuclear material, were insiders who had worked or were then working at nuclear research institutes or naval bases. Most perpetrators had no customers in hand but new that a quick profit existed (See Appendix B). The first confirmed case involving the diversion of HEU occurred at the Luch Scientific Production Association in Podolsk. Between May and September of 1992, Leonid Smirnov, ...
- 12956: Nuclear Weapons
- ... TreatyΥs signers agreed not to test nuclear weapons in the atmosphere, in outer space, or underwater. The only testing that was allowed was underground testing. Attempts to control the number of nuclear weapons in the world began about 1970. The Strategic Arms Limitation Talks(SALT) was a convention held by the United States and the Soviet Union to limit the numbers in nuclear weapons. In 1982, the United States and the ... a lot more than treaties to negotiate. LetΥs just hope this will all end before that ozone layer breaks down on us!!!! BIBLIOGRAPHY 1. Budanski, Stephen. "Ban the bomb? Not quite." U.S. News and World Report 17 June 1996: 30 2. Cohen, James. Nuclear arms. Pittsburgh 1979. 3. Mitchell, Alison. "Clinton and Yeltsin Accentuate the positive at Summit Meeting." Newsweek 22 May 1990 A7 Column 1 4. Von Hippel, Frank. "Bombs Away." Discover April 1992: 32-35 5. Zimmerman, Tim. "Nuclear Fiction." U.S. News and World Report 24 August 1996: 20
- 12957: Manatees
- ... that kills many aquatic animals including fish, and apparently manatees. Brevetoxin is usually found in a type of reddish-brown algae called the red tide. Last July, the bacteria alone killed 304 manatees creating a new official record for most manatees killed in a year ("Toxin Killed Manatees" A18). Aside from Brevetoxin, the manatees only natural predator is its unawareness, they sometimes drift too far north, and get killed by the ... cold sea water. This is a problem that whales and other large sea mammals also have to face. (O'Shea 68) Having been studied seriously only since the mid 1900's, manatees are a fairly new creature in the science community. This is probably because that manatees are very timid creatures which makes them hard to analyze. Still, not much is known about the manatees to this present day. We do ... knowledge does not mean that steps are not being taken to study these animals. Recently, researchers attached satellite transmitters to the manatee so that scientists can study their movement, and speed. They have learned many new things from this study, such as that they can travel up to fifty kilometers a day, and go back to a designated location every season. Further developments in manatee research will help in preventing ...
- 12958: Greenhousing the Wrong Way
- ... continuous burning of fossil fuels and the rain forests is causing excess amounts of carbon dioxide to be released into the atmosphere. Carbon dioxide acts as the walls of a greenhouse that encompasses the whole world, trapping heat into the atmosphere. The thickening of the blanket is causing more heat to be trapped resulting in the warming of the earth. One great example of the Greenhouse Effect is the planet Venus ... Diseases such as malaria and other insect borne ailments will have an expanded range if the tropics continue to warm. If conditions change faster than species can adapt, many, many, many animals will become extinct (World Book). So What Am I Supposed To About All These Man Made Disasters? Become knowledgeable about the subject of global warming. Recognize that global warming may worsen and prepare yourself and others for it. Help ... you can do is care enough to try to make a difference. Works Cited "Turning up the Heat", Popular Science, October 1989, p.53 Whitmore, Susan C., Global Climate Change and Agricultural Summary, Sept. 1992 World Book Encyclopedia, volume G, 1991, p.407
- 12959: Acid Rain Legislation
- ... Media explains that the agreement has enough framework to address all transboundary air pollution issues. It is a very broad/general agreement that should highly reduce air pollution between these two major countries of the world. This agreement contains other specific commitments for emissions reductions relating to acid rain precursors and research as well as a commitment to review the Agreement in it's fifth year. This allows for expansion of ... emissions. Should tougher legislation be implemented to force industry to reduce acid rain emissions? From an environmental point of view...yes, anything that can be done, should be done. Whether it be through studies, research, new technologies, anything for our environment. From an economical point of view...no, technology is very expensive and hardly affordable in terms of most industries. Technology can reduce the dangers of acid rain, but at what ...
- 12960: Martin Luther King Jr. 7
- ... in the back giving up seats to other white people. In 1950, Montgomery s blacks talked about boycotting the buses to gain better treatment. The Montgomery bus boycott lasted for a year before having a new attitude about blacks. In December 1st, 1955, women from the NAACP got really brave and refused to give up her seat for a white passenger. Her name was Rosa Parks and she got arrested. After she got arrested, Edgar Nixon took a bus protest. By this time Martin and ...
Search results 12951 - 12960 of 22819 matching essays
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