Dangers And Destructions Of Floods And Hurricanes
.... rains. Coastal flooding can not only take part on oceans but it
can also take part on lakes. Coastal flooding can be a great danger because
coast lines are very densely populated areas. In the United States in the
early 1990's 50% of the population was on a coastal county.1 Although they
shrink before reaching shore, wind generated waves have been spotted to be
as high as 30 m (100 ft) in the middle of the ocean.2 In 1970 a major storm
in the Bay of Bengal produced heavy seas that flooded regions .....
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The Chlorine Debate: How White Do You Want It?
.... processes is dioxin, one of the most toxic substances on the
planet earth. Dioxins are also produced whenever chlorine containing substances,
such as PVC, are burned.
Life as we know it will change, if a Greenpeace campaign is successful.
The powerful environmental group has mounted a well-organized campaign that has
as its objective nothing less than a total, worldwide ban on chlorine. With the
public health and billions of dollars at stake, the debate over chlorine has
become one of the world's most c .....
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Chlorine
.... to gain one
electron and become a chloride ion. Chlorine strongly reacts with metals to form
mostly water-soluble chlorides. Chlorine also strongly reacts with nonmetals
such as sulfur, phosphorus, and other halogens. If you were to mix hydrogen and
chlorine gases and keep them in a cool dark place, the mixture would be stable,
but if it were exposed to sunlight, it would cause a strong explosion. If a
burning candle were placed in a sealed container of chlorine, it would keep
burning, and it would pr .....
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Cloning
.... with frogs it
has not yet been accomplished with mammals (Lawren). Another way to make a
clone, as they do in the cattle buisness, is to split the cells of a early
multi-celled embryo which will form two new embryos (Lawren).
For it to get started into practice it took more than fifty years of
questioning and testing. The first successful cloning experiment involved a
leopard frog. It took place in, 1952 with group of scientist from the
Institute for Cancer Research in Philadelphia (Lawren). To clon .....
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Cobalt
.... unique and special magnetic properties. For
example, Hyperco is used as the nucleus in strong electromagnets. Alloys
containing titanium, aluminum, cobalt and nickel can be made to become
permanently magnetic. One alloy, called Stellite, is an alloy of cobalt,
chromium, tungsten, and molybdenum. This alloy is extremely hard and keeps its
hardness at extreme temperatures. It has many uses: cutting tools are made of
it along with gas turbines. Zaire is the world¹s largest producer of cobalt
with 65 .....
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CODEINE (C18 H2, NO3 H3PO4 1/2 H2O)
.... relief of mild to moderate pain. It is also used as a cough remedy
because it suppresses the part of the brain that triggers coughing, and as an
anti-diarrheal drug, because it slows down muscle contractions in the intestinal
wall. There are possible adverse effects. The most frequently observed adverse
reactions include lightheadedness, dizziness, sedation, nausea, vomiting, and
sweating. These effects seem to be more prominent in ambulatory patients and in
those who are not suffering severe pain. Othe .....
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Robert Wright's Article "The Evolution Of Despair"
.... in
quantity time with them – whatever the source of stress, we at times get
the feeling that modern life isn't what we were designed for" (1).
Everyone, at some point, has experienced the feelings that Wright
describes. And with the pronoun ‘we' Wright tells his readers, ‘Yes, I
have been through the same things.' This sort of statement is like a token
of good will. The readers feel that Wright understands their plight and
thus are more likely to listen to what he has to say.
With .....
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The Study Of Akali Metal Contamination In Road Side Soil
.... in the extracts of the soil samples and consequently examine the
relationship between distance from the point of road salt application and akali
metal concentrations.
Experimental
Soil preparation: Six surface soil samples were collected at the intersection of
Cold Spring Lane and the exit ramp of Interstate 83, in northwest Baltimore city.
These samples were collected at distances from the roadway of 0m, 2m, 4m, 6m,
10m, and 20m. These samples were dried in a convection oven at 110°C for over 24
hours .....
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Radioactive Wastes
.... very advantageous way of
storing radioactive wastes is by a process called 'vitrification'.
Vitrification is a semi-continuous process that enables the following
operations to be carried out with the same equipment: evaporation of the waste
solution mixed with the additives necesary for the production of borosilicate
glass, calcination and elaboration of the glass. These operations are carried
out in a metallic pot that is heated in an induction furnace. The vitrification
of one load of wastes comp .....
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Copper
.... tons, and Zambia with 596,000 short tons.
When copper is being mined, both Native copper and copper ore
are usually found. The highest grade of copper ore is pale silvery gray. Miners
used to be always in danger in copper mines. Today, we have reduced a fair
amount of these hazards. Miners wear hats made of iron or very hard plastic.
This is to protect them from falling rocks. Lamps are also attached to these
helmets in case some of the lighting in the mine goes out leaving a miner
stranded in t .....
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Decomposition
.... forcing
the water out. Burning ember re-ignited when placed into the bottle of O2.
Calculations: 1. The number of moles of KClO4 that we began with is .03 moles.
4.0g ¸ 138.6g/mol = .03 moles 2. The number of moles of O2 that were present in
our sample of KClO4 was .06 moles. 1.9g ¸ 32g/mole = .06 moles 3. The number of
moles of O2 lost is .02 moles. 1.7g ¸ 32g/mol = .05 moles 4. KClO4 à KCl + 202
4.0g ¸ 138.6g/mol = .03 moles ´ 202 ¸ KClO4 = .06 moles ´ 32g = 1.9g 5 Percent
Yield: 89% O2 lost 1.7g .....
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Determination Of An Unknown Amino Acid From Titration
.... is a
Lewis acidic because it is able to donate a hydrogen ion (Kotz et al., 1996).
Other forms of amino acids also exist. Amino acids may exists as acidic or
basic salts. For example, if the glycine reacted with HCl, the resulting amino
acid would be glycine hydrochloride (see fig. 2). Glycine hydrochloride is an
example of an acidic salt form of the amino acid. Likewise, if NaOH were added,
the resulting amino acid would be sodium glycinate (see fig. 3), an example of a
basic salt form.
Fig. 2
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Determining The Ratio Of Circumference To Diameter Of A Circle
.... Error is the deviation of the experimental ratio from the accepted ratio.
After I had the error I could go on to find the percentage error. The equation I
used was, error divided by the accepted ratio times 100. For example, if I took
the error of the experimental ratio for the paper towels, which was 0.12. I took
that and divided it by the accepted ratio giving me .03821651. Then I multiplied
that by 100 giving me about 3.14. Using these steps I found the percentage error
for all of the objects me .....
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The Discovery Of The Electron
.... on a slowly moving sphere. The charges thus measured are integral multiples
of e.
Electrons are emitted in radioactivity and in many other
decay processes. The electron itself is completely stable. Electrons contribute
the bulk to ordinary matter; the volume of an atom is nearly all occupied by the
cloud of elec trons surrounding the nucleus, which occupies only about 10^-13 of
the atom's volume. The chemical properties of ordinary matter are determined by
the electron cloud.
The .....
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DNA
.... is a sugar called deoxyribose.
Attached to one end of the sugar is a phosphate group, and at the other is one
of several nitrogenous bases. DNA contains four nitrogenous bases. The first two,
adenine and guanine, are double-ringed purine compounds. The others, cytosine
and thymine, are single-ringed pyrimidine compounds. (Miller, 141) Four types of
DNA nucleotides can be formed, depending on which nitrogenous base is involved.
The phosphate group of each nucleotide bonds with a carbon from the deoxyrib .....
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