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» Browse Science and Environment Term Papers
Uranium: Nuclear Friend Or Nuclear Foe
Number of Words: 2697 / Number of Pages: 10
... The doctors found that 75 percent of the miner deaths were due
to lung cancer. But with their scientific knowledge the doctors could only
assume that the deaths were caused by the inhalation of arsenic. Later
studies between 1900 and 1940 found that the deaths were caused by
radiation in the mines.
The radiation the miners were exposed to would later be identified
as uranium. Uranium is a natural occurring element, it has a atomic count
of 92. Uranium is easily identified by its properties. Uranium melts at
about 1132°C, boils at about 3818°C, and has a specific gravity of 19.05 at
25°C. Uraniu ...
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A Look At Anemia Related To Nutritional Issues
Number of Words: 4320 / Number of Pages: 16
... molecule within each red blood cell. This molecule consists of heme, which is a red pigment, and globin, which is a protein. If the amount of functioning hemoglobin is reduced, a condition known as anemia arises" ("Anemia", 1). "The anemia that may result can take many forms, including that caused by a low iron level (iron deficiency anemia), a vitamin deficiency (megaloblastic anemia), a thyroid deficiency, the premature destruction of red blood cells (hemolytic anemia), replacement of normal bone marrow cells by cancer cells or leukemia (myelophthisic anemia), injury to bone marrow (aplastic ...
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Digital Television
Number of Words: 808 / Number of Pages: 3
... of varying bit sizes onto a single channel. Say you’re watching a football game, since one camera view only uses up so many bits, you can select a different camera angle while watching the same game on the same channel. It is possible for a network, like NBC, to show two different programs at the same time on the same channel. Conceivably, if the president in on, you can watch regular scheduled programming.
With the introduction of the digital TV, the introduction of WebTV is upon us. One will be able to surf the internet through the television instead of using their computer. That is how t ...
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Cellular Metabolism And Fermentation
Number of Words: 948 / Number of Pages: 4
... alcohol in their own bodies, we lack the genetic information to do so. These biochemical pathways, with their myriad reactions catalyzed by reaction-specific enzymes all under genetic control, are extremely complex. We will only skim the surface at this time and in this course.
Alcohol fermentation is the formation of alcohol from sugar. Yeast, when under anaerobic conditions, convert glucose to pyruvic acid via the glycolysis pathways, then go one step farther, converting pyruvic acid into ethanol, a C-2 compound.
Fermentation of ethanol. Image from W.H. Freeman and Sinauer Associates, used ...
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Global Warming
Number of Words: 368 / Number of Pages: 2
... U.S. government satellites and weather balloons1997 as the seventh coolest year since satellite measurements began in 1978. Further more, satellite and balloon based information, which uses different technology, concur with each other's readings according to NASA.
My opinion is that surface-based information can not be relied on until it covers more land. Also, I find it difficult to argue with two different sources that prove each other's information to be accurate. I do not, however, feel that we should immediately depend on the reliability of either conjecture since the stakes are so high. I fe ...
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Feeding Yeast
Number of Words: 735 / Number of Pages: 3
... 115°) water. Into all four bottles I put four tablespoons (tbsp.) of the yeast solution. Put ½ cup of corn syrup into bottle one, along with the yeast solution. Into bottle two goes ½ cup of water and ½ cup of flour, and the yeast solution. Next, mix the gelatin according to directions on the package, about one-tablespoon of powder to ½ cup of water. The ½ cup of the gelatin goes into the 3rd bottle, along with 4 tbsp. of the yeast solution. Into the 4th and final bottle put in ½ cup of 100% grape juice and the 4 tablespoons of yeast solution. Slip a balloon over the mouth of each bottle far e ...
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Near Earth Objects
Number of Words: 186 / Number of Pages: 1
... programs that I will discuss with you. The Spaceguard program is
sponsored and run by NASA Ames Space Science Division: Asteroid and Comet Impact
Hazard. Also under the direction of Dr. Tom Gehrels the University of Arizona
has the Spacewatch program.
NEOs can be either asteroid or comets. Ninety percent of the
information that I came across discussed asteroids. Therefore, I will
concentrate on asteroids alone. I'm not fully knowledgeable on the subject but
I did learn a great deal.
What are NEOs? The "Webster's New World Dictionary" states, "Any of the
small planets between Mars ...
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Alkanes
Number of Words: 362 / Number of Pages: 2
... or paint stripper and 1,2-dichloroethane
which is a dry cleaning fluid. Here is a sample reaction where a halogen
replaces a hydrogen. CH4(g) + C12(g) ----> CH3Cl(g) + HCl(g)
There are many uses for alkanes, for instance: Propane is used in gas
grills, butane is used in cigarette lighters, through various reactions
scientists can make paint stripper, anesthesia or dry cleaning fluid. The
Pentanes and Hexanes are also highly flammable and make really cool explosions.
Heptane, octane and nonane make up gasoline. The "Octane Scale" on gas pumps
uses a system which rates n-heptane at a 0 and ...
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Tundra And The Artic
Number of Words: 1345 / Number of Pages: 5
... northern pole a lot of the Tundra receives
alternating 6 month periods of light and dark. This is also the reason why the
Tundra receives cold weather; at it's degree of latitude the suns rays end up
hitting the region obliquely, thus causing less solar heat. Here are the
temperatures of the Tundra in general:
Average January temperature: -32.1 degrees Celsius
Average July temperature: +4.1 degrees Celsius
Temperature range: 36.2 degrees Celsius
Average annual temperature: -17 degrees Celsius
Lowest temperature recorded: -52.5 degrees Celsius
Highest temperature recorded: +18.3 degrees Celsius ...
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Comparing Ballistics Of A .30-06 And .270
Number of Words: 559 / Number of Pages: 3
... The expansion is also good, depending on the type of shell tired-used. The kick and distance of the gun are considered to be wonderful because the kick is normal and the distance is better than normal.
The .270 rifle is a reasonably good rifle. This rifle is mainly used in open field shooting as opposed to in brush shooting. The depth and the expansion work together and turn out to be great, especially if soft pointed shells are used. The kick and the distance from the .270 rifle work relatively well as a whole. The
.270 is considered to be a fairly light gun. Even though the gun may ...
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