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» Science Essays and Papers
Diabetes
<view this essay>.... whether or not they have . This glucose comes from food. When we eat, the digestive process breaks down carbohydrates into glucose, which is absorbed into the blood in the small intestine.
People who don't have rely on insulin, a hormone made in the pancreas, to move glucose from the blood into the body's billions of cells. But people who have either don't produce insulin or can't efficiently use the insulin they produce. Without insulin, they can't move glucose into the cells. Glucose accumulates in the blood, a condition called hyperglycemia ("hyper" = too much, "glycemia" = glucose in the blood). Hyperglycemia causes intense thirst, the need to urina .....
Number of words: 1271 | Number of pages: 5 |
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History And Development Of The Internet
<view this essay>.... in fear of nuclear war. (Diamond, 3). Paul Baran, working for the U.S. Air Force, developed a network that could reroute itself around damage caused by the impact of an Intercontinental Ballistic Missile by using "redundancy of connectivity". This meant that in the event of a break in the network the server would re-route the information in an alternate path through a new technique called "packet switching". Packet Switching is a means of breaking up the message being sent into small packets which carry enough information to seek out its destination and sending them out separately towards the destination server. The message after being broken up wo .....
Number of words: 956 | Number of pages: 4 |
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The Geiger-Muller Tube
<view this essay>.... with a negative charge. A rigid wire with a positive charge runs down
the center of this cylinder. The voltage across the wire and cylinder is kept
just below the point at which a spontaneous discharge, or spark, occurs. When a
charged particle or gamma ray enters the tube , it ionizes a gas atom between
the copper cylinder and the wire. The positive ion produced is accelerated
toward the copper cylinder by the potential difference. The electron is
accelerated toward the positive wire. As these new particles move toward the
electrodes, they strike other atoms and form even more ion in their path.
Thus an avalanche of charged particles is created and a .....
Number of words: 227 | Number of pages: 1 |
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The Depletion Of Ozone Layer
<view this essay>.... such biological substances as cells and tissues.
Far above the earth, ozone forms naturally as oxygen produced from living things moves from the troposphere, the layer of air nearest to the earth surface, to the stratosphere. Air in the stratosphere absorbs solar energy, or heat from the sun, which in turn creates a photochemical reaction that produces ozone – a benefit to the environment since ozone protects people, plants, and animals from harmful radiation.
The ozone layer is important because it absorbs most of the damaging ultra-violet radiation from the sun before it reaches ground level, where it can cause sun burn, skin cancer and cataracts. Resear .....
Number of words: 2615 | Number of pages: 10 |
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Hemophilia 3
<view this essay>.... true in any given family, which indicates that the phenotypic expression of the disorder reflects the genetic defect. In about 5% of cases, hemophilia-A results from partial deletion of the factor VIII gene, and is severe. Other cases result from a single base mutation in the gene. This can result in nonsense mutations which result in premature stop codons, and a severe expression of the disorder, or missense mutations which cause milder forms of the disorder. In some cases the disorder can also result from spontaneous mutations, but this is less common.
The gene for hemophilia-A is located at Xq28 while the gene for hemophilia-B is located at Xq27.1-q27.2. .....
Number of words: 660 | Number of pages: 3 |
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Meth 2
<view this essay>.... the desire for the
drug surpasses other interests- including the need for food, sleep,
friends, sex, and family. The effects of this drug are long-lasting.
Food and water become unimportant after taking it. Seizures and
death can occur. Meth can cause: angry, hostile, and anxious
feelings, violent behaviors, confusion, mental illness, increased
physical activity, loss of appetite, increased heart rate, inability to
sleep, strokes can occur, chest pain, increased blood pressure,
irregular heart rate, aids and HIV through the use of needles,
dependence, tolerance, addiction, and can cause psychosis.
The use of Meth is going up. In 1995, 3.9% of h .....
Number of words: 358 | Number of pages: 2 |
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Glass
<view this essay>.... more. Along with the many uses of , there are different properties, different es ans many interesting facts. The term is usually applied to silicate-based materials, non-crystalline solids. Basically a is any material that has congealed and become firm without forming a regular crystal formation.(Russ, 1998) The properties of vary and regulate by modifying the composition, production techniques or both. represents a combination of properties that can not be separated, such as mechanical, chemical, optical and thermal properties. is an intriguing substance in the way that the moment you change the percentage of one of its components, the itself i .....
Number of words: 1557 | Number of pages: 6 |
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Can Intelligence Be Measured
<view this essay>.... To issue a truly standardized test, the background of their studies must all is the same between students. For example, children from a big school in Indianapolis certainly had different classes that could be taken in Kendallville, In. The schools probably have different funding, environment, children, plus many other factors that are not the same in every school. The actual environment that they are taking the test in could be different and affect different individuals in different ways. A person could not be feeling good on the certain day of the test and this certainly affects the outcome of the test. Well if you do badly on it you will just be .....
Number of words: 1021 | Number of pages: 4 |
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