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» Science Essays and Papers
Carbohydrates
<view this essay>.... by hydroxyl groups and an aldehyde or ketone group. These functional groups make sugars highly soluble in aqueous solution. In solution the aldehyde or ketone group has a tendency to react with one of the hydroxyl groups, producing a ring structure. The alpha glucose, which is the base of many polymers, is an energy source in organisms.
Although glucose is the common transport sugar for vertebrates, sugars are often transported in other organisms as disaccharides. Sucrose, commonly called cane sugar, is the form in which sugar is transported in plants from the photosynthetic cells to other parts of the plant body. Sucrose is composed of the monosacch .....
Number of words: 383 | Number of pages: 2 |
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The Aftermath Of Hurricane Mitch
<view this essay>.... in
the midday sun. Mud is everywhere. Several feet of it fill city streets,
the first and even second floors of buildings, automobiles and anything
else that may have fallen victim to the hurricane's epic floodwaters.
Workers hack and chip at the mud with shovels and pickaxes, and an endless
procession of shopowners scurry between their gutted businesses and the
river in a desperate attempt to wash and salvage their goods.
A muddy valley runs past the Central Prison, where some of the
incarcerated swam to freedom as Mitch's floodwaters rose and propelled them
over the walls. Hundreds of homes, streets, and businesses were washed away,
and those that re .....
Number of words: 382 | Number of pages: 2 |
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Cfc
<view this essay>.... Mario Molina, two distinguished chemists, came up with a surprising result in his calculations concerning the s and ozone layer. s are basically inactive in the troposphere(around the altitude of 50,000 feet) so it would gradually drift upward until they reached the mid-stratosphere.(about 100,000 feet) At this point s would be broken down by short-wavelength ultraviolet radiation from the sun. This radiation is the one which would not reach the lower atmosphere in large amounts because of the ozone layer. When these s do brake down, they released atomic chlorine which then would react with the ozone and convert it back into plain oxygen. The even worse part .....
Number of words: 1018 | Number of pages: 4 |
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H.i.v. About Aids
<view this essay>.... is possible because if we know
that HIV survives through mutations then we might be able to come up with a
type of drug to retard these mutations allowing the immune system time to
expunge it before the onset of AIDS.
In order to be able to fully comprehend and analyze this question we must first ascertain what HIV is, how the body attempts to counter the effects of viruses in general, and how HIV infects the body.
Definition
HIV is the virus that causes AIDS. HIV is classified as a RNA Retrovirus.
A retrovirus uses RNA templates to produce DNA. For example, within the
core of HIV is a double molecule of ribonucleic acid, .....
Number of words: 2048 | Number of pages: 8 |
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Cryogenics: Is It Worth Waiting For
<view this essay>.... important in cryogenics and the
temperatures must be exact. The standard for scientific temperature measurement
is the Kelvin scale. On the Kelvin scale absolute zero has a value of zero
degrees on the thermometer. In theory no substance can be lowered to or below
zero degrees Kelvin or absolute zero. Temperatures in cryobiology range from
zero degrees Celsius--water freezes--to just above negative two hundred and
seventy three point sixteen degrees Celsius--absolute zero. The word
"Cryogenics" comes from the Greek word “kryos” meaning cold (“Cryogenics”
Raintree 127, Kavaler 16). The science of cryobiology was first recognized in
the early nineteen s .....
Number of words: 848 | Number of pages: 4 |
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Flooding
<view this essay>.... Jersey Sea Grant College Program and the Climate Institute, drew 175 representatives of state and local government, property owners, some who came to observe, and some to rebut.
Scientists, engineers and many local planners see coastal erosion and as a serious issue but previously viewed the concept of sea level rise as a codeword for “retreat,” giving up protective measures for the barrier island communities.There has been polarization in the past between some mayors and public officials who favor public expenditures to hold back the sea and other public officials and some scientists who are skeptical about erosion-fighting programs. There were tho .....
Number of words: 3318 | Number of pages: 13 |
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Chinese Shih Poetry And Philosophy
<view this essay>.... and Po Chü-i expressed the ideas of Taoism and Confucianism, respectively, while their fellow poet T’ao Ch’ien expressed both, through their poetry.
Confucianism is based on the ideas of Confucius, the man who gave the school of thought its name. The main goal of Confucianists was to return a gentlemanly society to China. The core of Confucianism concerned social structure. Confucius taught that a man should respect and obey those of higher rank than himself, whether they be the father of a family, or the emperor of a nation. But even with absolute obedience, Confucianists believed that men should practice restraint and benevolence in those inferior to th .....
Number of words: 1127 | Number of pages: 5 |
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Big Brother, Little Sister Computer Monitoring
<view this essay>.... for the types of effects it may have in the workplace. According to DeTienne, "By the end of the decade, as many as 30 million people may constantly be monitored in their jobs" (462). As computer systems become more sophisticated this number will drastically increase. As we enter this new age of technology we must remember that with more power comes more responsibility by employers and employees alike. Micheal J. Smith, a professor at the University of Wisconsin-Madison explains that knowledge can be used as a weapon or as a tool (DeTienne 462).
For instance monitoring abuse can be found in the in the situation of airline agents. The agents discovered that by k .....
Number of words: 721 | Number of pages: 3 |
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