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Uranium

... was quite customary at the time. William Herschel gave uranium its name from the last planet founded in are solar system at the time, he named it Uran, which in its final form became uranium, a name which today is known worldwide while klaproth's own fame has faded. Uranium is as dense as gold. Uranium, was first prepared with some difficulty, in 1841 by the french chemist Eugène Peligot, using thermal reaction of tetrachloride with potassium. Later in 1870, an important fact was established: uranium is the last and heaviest element pres ...

Number of words: 394 | Number of pages: 2

Fungi: The Great Decomposers

... is to decompose nutrients of plants and animals. History the history of fungi is not very clear because scientists have never realy wnt in great deepth , because fungi are not needed commericaly. the ancestors of fungi lived in shallow bodies of water about 600-800 million years ago. Some of the things the fungi had to encounter from living out of water was, there was more sunlight that was normally blocked be the water, and the had to do something about the rapid shifts in tempature and seasonal shifts. Fungi are different from other ...

Number of words: 180 | Number of pages: 1

Iron

... 1988, 56). Other ores included goethite, magnetite, siderite, and bog iron (Encarta, 1996). Even though iron is tough and hard it is still easy to work. Iron is a active metal and will combine with halogens, carbon, etc. It has an atomic weight 55.847, it's atomic number is 26, it's specific gravity is 7.86, it's melting point is 1535 degrees Celsius, and it's boiling point is 3000 degrees Celsius. It burns in oxygen forming ferrous oxide. When exposed to moist air, iron becomes corroded, forming a reddish - brown, flaky, hydrated fe ...

Number of words: 1056 | Number of pages: 4

Metabolic Costs Of Generating Force

... (mean body mass 78.88kg) and five species of bird mean body mass 0.13-40.1 kg). We find that most (70-90%) of the increase in metabolic rate with speed in running bipeds can be explained by changes in the time available to generate force. The rate of force generation also explains differences in metabolic rate over the size range of birds measured. However, for a given rate of force generation, birds use on average 1.7 times more metabolic energy than quadrupeds. The rate of energy consumption for a given rate of force generation for huma ...

Number of words: 501 | Number of pages: 2

Gene Therapy

... adults. Genetic testing also exists for conditions such as Lou Gehrig's disease, Huntingtons disease and dangerously high cholesterol. is a novel approach to treating diseases based on modifying the expression of a person's genes toward a therapeutic goal. has been discussed in the context of treating lethal and disabling diseases although it also has a potential for disease prevention. is in its formative stages, being investigated in basic research laboratories. A number of early human clinical trials have been initiated to test importan ...

Number of words: 1437 | Number of pages: 6

Malibu Fires

... potential for monumental damage to all surrounding biomass. The Malibu wildfires are an example of one such instance. Historically, wildfires had been left to burn uncontrolled for weeks. Fires were caused by different sources such as lightning or human hunters who wanted to chase animals out of the woods. As prolonged as these fires were, they had limited catastrophic effects on the nomadic humans. This is due to the low population density and the fact that the fires were not very intense. As people began to change from a hunting-gathe ...

Number of words: 2537 | Number of pages: 10

Environmental Issues Associated With Vehicle Use

... problem in many parts of the world, for example, Los Angeles regularly, experience health threatening levels of pollution due to photochemical smog. Some of the consequences are: reduced visibility; bronchitis; blocking of stomata, reducing CO2 absorption; erosion of limestone and sandstone buildings; increased susceptibility to respiratory infections; throat and eye irritation; leaf necrosis, reduced growth and growth abnormalities and drowsiness. Increasing levels of air pollution, particularly particulates from vehicles, are linked to incr ...

Number of words: 1423 | Number of pages: 6

Caffeine

... include cardiovascular disease, fibrocystic breast diseases, reproductive function, behavior in children, birth defects and cancer. Studies at Vanderbuilt University show that the effects of on sleep varies greatly between individuals. Some people feel no effects while others reported reduced or poorer quality sleep. The article also states that has very little effect on blood pressure. Only people that are highly sensitive to , experience a short period of higher blood pressure then they normally have. In an experiment done by th ...

Number of words: 761 | Number of pages: 3

Alcoholism 2

... to some degree. More males than females are affected, but drinking among the young and among women is increasing. Consumption of alcohol is apparently on the rise in the United States, countries of the former Union of Soviet Socialist Republics, and many European nations. This is paralleled by growing evidence of increasing numbers of alcohol-related problems in other nations, including the Third World. Development Alcoholism, as opposed to merely excessive or irresponsible drinking, has been variously thought of as a symptom of psycholog ...

Number of words: 799 | Number of pages: 3

The Cosmos: Creation

... Expansion of the Universe Edwin Hubble established the existence of other galaxies. He noted that the light from these galaxies was shifted toward the red. That is it's wavelength was longer than that of the light emitted from the corresponding atoms in the lab. Furthermore he found that the farther away the galaxy was the more it was shifted toward the red end of the spectrum. Hubble attributed this shift to the doppler effect. Hubble saw this and concluded that all galaxies are rushing away from us and the universe is expandin ...

Number of words: 602 | Number of pages: 3

UFO's: Seeing Is Believing

... were dubbed "UFO's". The acronym UFO stands for Unidentified Flying Object. Modern electronics and science have helped us in the search for an explanation of these mysterious floating objects. In actuality they haven't gotten us much further on the mission for proof of other living beings in the universe. But in a universe so incomprehensibly large that we no not even a boundary, I sincerely doubt that the human race is the only form of life. It seems certain scientists have come up with other hypotheses concerning UFO's. While all a ...

Number of words: 685 | Number of pages: 3

EPA Urges Tough Rules On Arsenic

... decisions the Bush administration has made since coming into office. The 50-year federal standard for naturally occurring arsenic levels in drinking water was at 50 parts per billion and the proposition was made at 10 parts per billion. Person 3- Whitman charged at the time that the Clinton rule had been hastily crafted without adequate scientific study or consideration of the cost for small communities that would have to change their filtration systems to meet federal law. The review focused on alternative standards – ranging from as ...

Number of words: 308 | Number of pages: 2

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