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» Science Essays and Papers
The Creation Of The Universe
<view this essay>.... , for
example, there is an ancient Egyptian legend that says that Osiris Khepera
created himself out of a dark, boundless ocean called "Nu". Then out of this
ocean, he created the universe. I will be writing about these theories: The Big
Bang theory is what most people believe, also there is a theory called "Steady
State", which is the opposite of the Big Bang theory. There is the theory of an
"Oscillating Universe", which is sort of a compromise between the Big Bang
theory, and the Steady State theory. There is also the religious theory, in
which God created everything.
There are a lot of different theories regarding the creation of the
universe. It is a .....
Number of words: 193 | Number of pages: 1 |
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Soil Salinity
<view this essay>.... systems. A small increase
in the infiltration of water from the topsoil to the groundwater, due to
rainfall or irrigation, can result in a dramatic rise in groundwater pressure
and watertable levels.
The trees of the open forests are now replaced by shallow-rooted crops and
pastures which absorb far less water than the native trees. Those trees had been
massive water pumps, sucking up moisture from deep underground and putting it
back into the atmosphere through the evaporation from their leaves. With those
pumps gone, excess rainfall accumulates underground and watertables rise to the
surface, bringing ancient sediments of salt with them, often in heavy
conc .....
Number of words: 286 | Number of pages: 2 |
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The Y2K Problem
<view this essay>.... when the calendar rolls over from 1999 to 2000, such systems will not have the contextual smarts to process our shorthand dates correctly. Some of these computer systems will produce obviously silly results, good for a laugh at the office. Some will produce subtle errors that may be passed on, undetected at the source, in an ever-expanding circle of bad data. And some systems will stop working altogether.
How might systems fail? Let's look at an example program in which the omitted century is assumed to be '19' and the program's function is to figure out how old you are. If you were born in 1958, then in 1999 this program will calculate your age as 99 .....
Number of words: 770 | Number of pages: 3 |
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Forest Management
<view this essay>.... be to manage every acre of the forest the
same way. Any change in forest habitat creates “winners” and “losers.” As
forests go through natural cycles of growth, death and regeneration, species
may inhabit or be absent from a given area partly in response to natural
changes in the structure of trees and other forest vegetation(4). The same
occurs when forest stands are managed by humans.
Unless future credible research indicates otherwise, effort should be
made to manage a wide range of forest structures. Maintaining diversity would
be best served by using a broader range of management tools. Those would
include harvesting .....
Number of words: 931 | Number of pages: 4 |
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Lsd 2
<view this essay>.... in 1938 in Switzerland, who was searching for possible therapeutic uses of Ergot. Hoffman continued his experiments, but never came in contact with the crystals until1943. (LSD can be absorbed through the skin.) Hoffman then sent LSD around the world to be tested and investigated to find medical uses. Lysergic acid deviates were found to relieve migraines and control postpartum hemorrhage because it causes veins to contract, but also caused gangrene of the limbs, and so further experimentation with the drug was abandoned. In the late 50's, however, LSD was used by the CIA as an interrogation drug for spies. However, it was proven to be unreliable and .....
Number of words: 769 | Number of pages: 3 |
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Hysteria
<view this essay>.... cause many avoidable deaths.
Mass is a frenzy that has the potential to effect an entire community, state or possibly even country or nation. “[It is] a condition where a group of people dash about wildly, screaming and sometimes talking as if another person is in them; experiencing rapid breathing, spasms of extremities or even fainting”(Hayes 1). In some ways, it can be look on as a chain reaction. “It is often caused by new problems that worsen existing difficulties”(TWHSTSV 2). When one person sees another running about wildly and finds out what the cause is, he or she will do the same; until eventually the idea spreads to the e .....
Number of words: 654 | Number of pages: 3 |
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Phosphates
<view this essay>.... step in oxidation of glucose in the body.
Primary calcium phosphate is an ingredient of plant fertilizer.
Phosphates have caused increasing attention recently. The focus is on
the environmentally harmful effects in household detergents. Wastewater, from
laundering agents, contains phosphates, which are said to be a water pollutant.
Most laundry detergents contain approximately 35% to 75% sodium
triphosphate (Na5P3O10), which serves two purposes. Providing an alkaline
solution (pH 9.0 to 10.5) is necessary for effective cleansing and also to tie
up calcium and magnesium ions found in natural waters and prevent them from
interfering with the cl .....
Number of words: 865 | Number of pages: 4 |
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Bipolar Disorder 2
<view this essay>.... keep looking for explanations of its causes and treatment.
Affective disorders are characterized by a hell of alot of symptoms that can be broken into manic and depressive moods. The depressive episodes are characterized by bad feelings of sadness and despair that can become feelings of hopelessness and helplessness. Some of the symptoms of a depressive episode include anhedonia, disturbances in sleep and appetite, psycomoter retardation, loss of energy, feelings of worthlessness, guilt, difficulty thinking, indecision, and recurrent thoughts of death and suicide. The manic moods are made up by elevated or irritable mood, increased energy, decreased need for .....
Number of words: 1764 | Number of pages: 7 |
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