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» Browse Science and Environment Term Papers
Birth Control
Number of Words: 1292 / Number of Pages: 5
... pills on a regular basis and at a regular time of day (say after dinner or with breakfast every day) as effectiveness drops with improper usage.
The birth control pill cannot be used as a "morning after pill" without the advice and monitoring of a physician.
Common side effects of birth control pills are nausea; vomiting; cramps; bloating; breakthrough bleeding (light bleeding at the start of the regimen); spotting (light bleeding at times);
change in menstrual flow (most commonly lighter flow than one is used to); breast changes such as increased tenderness, enlargement, secretion; change in wei ...
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Headaches Their Causes And Effects
Number of Words: 633 / Number of Pages: 3
... have the classic migraine symptoms- she would see only half of her teacher and bright lights and flashes up to 20 minutes before her Migraine began. These symptoms are called auras and once they are gone the Migraine begins. The Migraine itself can lead to vomiting, slurred speech, makes the sufferer sensitive to light and worsens when there is a lot of noise.
The mechanism is not completely understood, but many women have their most severe attacks during or just before their menstrual period. This is supposedly due to the hormonal imbalance during that time.
So, what can we do to prevent Migra ...
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Forensic Psychology
Number of Words: 860 / Number of Pages: 4
... institution, state mental hospitals, law enforcement agencies, or a private practice (The Page").
Forensic psychologists also provide treatment services. These include counseling for adults and children involved in divorce proceedings and anger management counseling ("Psychology Information Online" 1998).
Forensic psychologists help a lot with family issues. Some examples of the services for the family court cases are: child custody evaluations, visitation risk assessment, evaluations to access termination of parental rights, adoption readiness evaluations ("Forensic Psychological Evaluations"). ...
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Barium
Number of Words: 563 / Number of Pages: 3
... The carbonate has been used as a rat poison, while nitrate and chlorate give colors in pyrotechny. The impure sulfide of radiantly glows after exposure to the light. metal has few practical applications, although it is sometimes used in coating electrical conductors in electronic apparatus and in automobile ignition systems. sulfate (BaSO4) is used as a filler for rubber products, in paint, and in linoleum. nitrate is used in fireworks. A form of sulfate, which is opaque to X rays, is used for the X-ray examination of the gastrointestinal tract.
Naturally occurring is a mixture of seve ...
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Network Security
Number of Words: 2810 / Number of Pages: 11
... [1]
An example is mission impossible one of the detective movies who show how easy it is to tap a telephone- Although it is illegal unauthorised access is gained, damage can be done to sensitive data if leaked from one company to another which can provide criminals with the electronic gold mine of fraud opportunities.[2]
so this justifies the need for security.
Many definitions say that security means “…..unauthorised access, such as preventing a hacker from breaking into your computer” (Fitzgerald and Dennis, 1996, pp426). This statement shows the importance of the compute ...
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Lasers 2
Number of Words: 1125 / Number of Pages: 5
... was first proposed by Albert Einstein in 1917. The working principles of lasers were outlined by the American physicists Arthur Leonard Schawlow and Charles Hard Townes in their 1958 patent application. The patent was granted but was later challenged by the American physicist and engineer Gordon Gould. In 1960 the American physicist Theodore Maiman observed the first laser action in solid ruby.
HOW A LASER WORKS
A laser is made up of several basic components. One is called active medium, which consists of atoms of a gas, molecules in a liquid, ions in a crystal, or any of several other possibil ...
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Global Warming 3 --
Number of Words: 1547 / Number of Pages: 6
... in itself. In fact, this planet would be a life-less waste land without its natural greenhouseing. There are a collection of gases called "greenhouse gases," which are water vapor, carbine dioxide, ozone, methane, nitrous oxide, and chlorofluorocarbons (CFC). Without the natural greenhouse effect, the surface temperature of our planet would be an average of -18°C (zero degrees F). The mixture of these gases have remained pretty much stable over the centuries and have kept us all living. But here we are in the late nineties, and we are not so stable anymore.
Our activities and what we use to perf ...
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Uranium
Number of Words: 394 / Number of Pages: 2
... on earth. This was demonstrated by Dimitri Mendeleev in his famous
perodical classification of the elements by chemical properties and increasing
atomic mass. Experimentation with uranium lead to many discoversies such as the
X-ray by Wilhelm Röntgen, on November 8, 1895.
Wilhelm Röntgen, was awarded the first Nobel prize in 1901 for the development
of the X-ray. Uranium is weakly radioactive, decaying slowly but inexorably at
the rate of one milligram per tonne per year. It is transformed into inactive
lead through a chain of radioelements or daughters, each of which has a
characteristic disintegr ...
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Formation Of Protocells
Number of Words: 797 / Number of Pages: 3
... caused chemical reactions to occur very often and there was also another source of heat from the young earth crust which was volcanically active.
For most chemical reactions to take place, a spark of electricity is needed, and this was provided by the lightning in the atmosphere. Amino acids basically consist of hydrogen, nitrogen, oxygen and carbon. Due to all of the lightning chemical reactions took place between molecules of N2 and H2, thus these molecules formed Amino acids.
A famous American scientist Dr Fox, was able to show how amino acids, the building blocks of proteins found in all livin ...
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Aids Is Becoming So Widespread
Number of Words: 973 / Number of Pages: 4
... became known as HIV-1. In 1985, scientists in France identified another closely related virus
that produces AIDS. This such virus became known as HIV-2 and occurs mainly just in Africa.
The virus,HIV-1 is spread throughout the world . HIV
infects certain white blood cells, including T-helper cells and macrophages, that play key roles in
the functioning of the human immune system. The virus attaches to certain molecules found only
on the surface of cells. When an AIDS virus enters one of these cells, the virus inserts its genes
into the cell's reproductive system and uses to produce m ...
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