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» Browse Science and Environment Term Papers
Lightning
Number of Words: 1211 / Number of Pages: 5
... forest and brush fires, as well as millions of dollars in damage to buildings, communications systems, power lines, and electrical systems are also the result of . Finally, the threat of causes many work stoppages and lost production increasing the time and cost required to
prepare NASA spacecraft for flight.
Benjamin Franklin performed the first systematic, scientific study of during the second half of the 18th century. Prior to that time, electrical science had developed to the point where positive and negative charges could be separated. Electrical machines could, by rubbing together two differen ...
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Endocrine Disruptors
Number of Words: 1702 / Number of Pages: 7
... likely to be encountered in the environment. However the process of bioaccumulation can result in top-level predators such as humans to have contaminants at levels many million times greater than the environmental background levels (Guilette 1994). In field studies, toxicity caused by endocrine disruption has been associated with the presence of certain pollutants. Findings from such studies include: reproductive disruption in starfish due to PCBs, bird eggshell thinning due to DDT, reproductive failure in mink, small penises in alligators due to DDT and dicofol (Guillette 1994, Colburn et al 1996). ...
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Acid Rain
Number of Words: 1515 / Number of Pages: 6
... fall next, because the wind from a pollueted area could carry pollution to
another area and the acid rain could fall there. The regions effected more by
acid rain is large parts of eastern North America, Scandinavia, and central
Europe. In alot of places acid rain isn't a probelm because some soils can
neutralize the acid and it doesn't effect the crops. Areas more sensitive to
acid rain is in the western United States most of Washington all of Oregon,
sectons of California and most of Idaho. Maine, New Hampshire, Vermont and a
large section of north east Canada. The soil in these places can not ne ...
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Minerals
Number of Words: 174 / Number of Pages: 1
... 2,000 to 2,500 minerals in the earths crust. Minerals are formed in a
positive response to their environment, most of them to deep for an observer.
Environments in which minerals are formed far beneath the earths surface are
plutonic igneous, pegmatitic, hot temperature vein, moderate temp. vein, low
temp. vein, and a metamorphic environment. Environments in which minerals form
near the earths surface are groundwater, weathering, and sedimentary. Minerals
are divided into groups on the basis of their composition. About one third of
all mineral belong to the group silicates. Other groups ar ...
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Are UFOs Real?
Number of Words: 1817 / Number of Pages: 7
... Maybe they got tired of spending money on something that was getting them nowhere. The overall and main question that has been asked for many, many years is, "Are UFO's real?' This is simply one question that can not be answered with yes or no but only answered with opinion. My opinion as to whether or not UFO's are real would have to be no. There is simply no believable evidence that has convinced me that UFO's could even possibly be real.
To begin with lets examine just how UFO's and the big phenomenon came about. As we know man has traditionally been known to construct a myth if there i ...
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Alcoholism 3
Number of Words: 1209 / Number of Pages: 5
... type of food in the stomach also affect the absorption rate. Drinking when the stomach is filled is less intoxicating than when it is empty; the foods in the stomach, which contain fat and protein, delay alcohol absorption. Body weight is also a factor; the heavier the person, the slower the absorption of alcohol. After alcohol passes through the stomach, it is rapidly absorbed through the walls of the intestines into the bloodstream and carried to the various organ systems of the body, where it is metabolized. Although small amounts of alcohol are processed by the kidneys and secreted in the urine, ...
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Cancer Treatments And Breakthroughs
Number of Words: 1572 / Number of Pages: 6
... that can't be taken out, like an organ. In these cases, surgery alone is basically useless. Radiation therapy is another option, and many doctors prefer this in many cases. When a patient receives radiation therapy, gamma rays are sent in to treat the region that the tumor is in. Patients usually receive five to eight weeks of treatments every day, but they don't have to stay in the hospital. Radiation works because when the high amount of rays treat the tumor, it will cause enough damage to the cells to kill them. Radiation does damage the healthy tissue, but they can recover easily. So, radia ...
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Gonorrhea
Number of Words: 369 / Number of Pages: 2
... include Pelvic Inflammatory Disease, ectopic pregnancy, perihepatitis, sterility can be transmitted to newborns. Approximately 2% of persons with untreated may develop Disseminated Gonococcal Infection (DGI). This develops into a fever, skin lesions and arthritis type pain.
is treated with antibiotic drugs taken orally or by an injection. All partners must be treated. Treatment during the early stages is usually 100 percent effective. It is important that all of the antibiotics are taken as prescribed, and that the infected people refrain from sexual intercourse during treatment. Proper hand washin ...
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Solar Cells
Number of Words: 1163 / Number of Pages: 5
... In electrical conductors, these bands are continuous but in insulators and semiconductors there is an "energy gap", in which no electron orbits can exist, between the inner valence band and outer conduction band [Book 1]. Valence electrons help to bind together the atoms in a solid by orbiting 2 adjacent nucleii, while conduction electrons, being less closely bound to the nucleii, are free to move in response to an applied voltage or electric field. The fewer conduction electrons there are, the higher the electrical resistivity of the material. In semiconductors, the materials from which solar sells a ...
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Breast Implants
Number of Words: 771 / Number of Pages: 3
... Characterization, is an important test. It does all of the following. If fabrication of the device involves curing of polymeric components by chemical crosslinking, then data establishing should be provided. This may be done by a various methods, for example: Measurement of Young’s modulus at low strain, as this is approximately proportional to crosslink density. Measurement of equilibrium swelling of the polymeric component by a good solvent. Determination of the amount of unreached crosslinker from its concentration in the total extractable (ODE documents 6).
Pharmacokinetic or biode ...
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