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Papers on Science and Nature
Nuclear Powernuclear Power
Number of words: 358 | Number of pages: 2.... (World Book vol. 14, 586)
Nuclear power plants generate only about eleven percent of the world’s
electricity. There are around 316 nuclear power plants in the world
that create 213,000 megawatts of electricity. (INFOPEDIA)
Radioactive, or nuclear, waste is the by-product of nuclear fission.
Fission occurs when atoms’ nucleus’ split and cause a nuclear reaction.
(General Information) When a free neutron splits a nucleus, energy is
released along with free neutrons, fission fragments that give off beta
rays, and gamma rays. A free neutron from the nucleus that just split
splits another nucleus. .....
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Capacitors
Number of words: 504 | Number of pages: 2.... large, but the energy loss in the dielectric must be very small. Some applications for these are in radio- frequency circuits and low- frequency measuring circuits where great precision is required. Another type of capacitor uses castor or mineral oil for the dielectric. Oil insulated are used in applications where larger values of the capacitance are required. also use solid dielectrics such as films of synthetic materials, paper, glass, and mica. Mica has excellent properties as a dielectric. It is both high in its dielectric constant and insulation resistance. It is affected little by time and temperature. This time .....
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Radioactive Wastes
Number of words: 1801 | Number of pages: 7.... to be carried out with the same equipment: evaporation of the waste
solution mixed with the additives necesary for the production of borosilicate
glass, calcination and elaboration of the glass. These operations are carried
out in a metallic pot that is heated in an induction furnace. The vitrification
of one load of wastes comprises of the following stages. The first step is
'Feeding'. In this step the vitrification receives a constant flow of mixture of
wastes and of additives until it is 80% full of calcine. The feeding rate and
heating power are adjusted so that an aqueous phase of several litres is
permanently maintained at .....
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The Prairie Dog: Friend Or Foe?
Number of words: 1768 | Number of pages: 7.... essential to our prairie ecosystem. Many species dependent on prairie dogs for prey and habitat are diminishing in direct relation to the decreasing number of prairie dogs. Unlike other species, which have declined because of habitat loss due to human activities, the loss of prairie dog populations is a direct result of governmental and private landowner efforts to eradicate them. Prairie dogs and their environment must be protected by law to preserve our native prairie ecosystem.
Tim Clark, a Yale University biologist and a veteran of years of observing prairie dogs and black-footed ferrets in the field, is quoted in Nation .....
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Cadmium And Sewage Sludge
Number of words: 1239 | Number of pages: 5.... fish take up cadmium from water, and so on.
It is introduced into the environment from mining and smelting operations. Other cadmium emissions are from fossil fuel use, fertilizer application, sewage sludge disposal or galvanized pie corrosion. The largest source of these cadmium releases into the general environment is the burning of fossil fuels (such as coal or oil) or the incineration of waste materials. Cadmium may also escape into the air from zinc, lead or copper smelters. Working in or living close to a major source of airborne emissions such as these may result in higher than average exposure.
Pathways into the human .....
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The Critical Role Of Informati
Number of words: 1717 | Number of pages: 7.... the value of information to the firm and offers new opportunities to businesses. Today, information systems provide the communication and analytic power that firms need to conduct trades and manage businesses on a global scale. Globalization and information technology also brings new threats to domestic business firms. This is brought on by the customer’s ability to shop in a worldwide marketplace, obtaining the price and quality information reliably, 24 hours a day. The worldwide market place brings competition to a higher level than ever before, forcing all businesses to play a part in this global economy. In order to bec .....
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Determining The Ratio Of Circumference To Diameter Of A Circle
Number of words: 501 | Number of pages: 2.... equation I
used was, error divided by the accepted ratio times 100. For example, if I took
the error of the experimental ratio for the paper towels, which was 0.12. I took
that and divided it by the accepted ratio giving me .03821651. Then I multiplied
that by 100 giving me about 3.14. Using these steps I found the percentage error
for all of the objects measured.
The next step was to graph the results. I was able to do this very
easily with spreadsheet. I typed in all of my data and the computer gave me a
nice scatter block graph. I also made a graph by hand. I set up the scale by
taking the number of blocks up the side of my gra .....
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Eagles 2
Number of words: 629 | Number of pages: 3.... reused year after year. With additions to the nests made annually, some may reach 10 feet across and weigh as much as 2,000 pounds. Although bald eagles may range over great distances, they usually return to nest within 100 miles of where they were raised.
Bald eagles normally lay two to three eggs once a year and the eggs hatch after about 35 days. The young eagles are flying within 3 months and are on their own about a month later. However, disease, lack of food, bad weather, or human interference can kill many eaglets; sometimes only about half will survive their first year.
The staple of most bald eagle diets is fish, but t .....
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Green Laws Boost Clean-up Iindustry
Number of words: 972 | Number of pages: 4.... finger of the law to start investing in their environmental
responsibilities. Investments on a volunta-ry basis are often due to the fact
that it makes good ecnomic sense or because it gives the corporate image a face-
lifting.
Seen from a geoprahical point of view Germany and primarily eastern
Europe form tremendously good breeding ground for the sale of clean-up equipment.
As a result of opencast mi-ning of lignite coal in Poland, for example, a huge
clean-up is left, which will amount to billions of dollars. However accidents
also occur at sea, where a spate of oil tanker disasters are likely to fill out
the order book at .....
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UFO's: Seeing Is Believing
Number of words: 685 | Number of pages: 3.... their beliefs on their origin contrast. Many looking for a more
scientific definition disregard UFO's as nothing more than a mere
misinterpretation of a plane, weather balloon, or meteor. Some have gone
so far as to say that specific witnesses to UFO's have seen nothing more
than a hallucination and "wanted" to see a UFO so their minds adapted that
idea into an illusion to satisfy the urge.
Personally, I have had two encounters with unexplainable objects in
the sky and to disregard them as a misinterpretation or hallucination is an
impossibility. Witnesses who were with me on one of the occasions saw
exactly what I did and w .....
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