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Papers On Chemistry
Page 5 of 13
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Dental Fillings: History, Types and Uses
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An 8 page discussion of the
history of dental fillings. Traces the filling from ancient times to
present exploring the various types of materials which were used. Explains that the choice of filling is related to performance but also to availability and cost. Notes that the evolutionary path of fillings is tied as well to the evolutionary paths of other dentistry aspects such as drill evolution and the development of molding techniques and
materials. Bibliography lists 7 sources.
Filename: PPdentFi.wps
Discuss how well Popper’s model of Conjectures and Refutations applies to Fleming's Work on Penicillin
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A paper which considers the differences between Popper's methodology and that of the inductionists, and applies the theories to Fleming's discovery of penicillin. Bibliography lists 4 sources
Filename: JLpoper.rtf
Dr. Willis H. Carrier: Father of Air Conditioning
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A 6 page paper which examines the life and contribution of Dr. Willis H. Carrier, the Father of Air Conditioning. Bibliography lists 6 sources.
Filename: RAaircn.rtf
Drug Chemistry: The Effect of Ionization of Absorption and Excretion
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A 4 page overview of the relation of drug ionization, specifically of whether the drug is a weak acid or a weak base, to its absorption into the body and consequent excretion from the body. Notes a differential absorption and excretion, according to physiological pH, as to where the drug is absorbed and when it is excreted. Bibliography lists 3 sources.
Filename: PPdrugCh.rtf
Early Photography: The Calotype
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(7pp) The base of a calotype negative, rather than
the glass or film to which we have become
accustomed, was high quality writing paper. The
sheet of paper was carefully selected to have a
smooth and uniform texture and, wherever possible,
to avoid the watermark. It was offered as the
chief alternative to the Daguerreotype and was more
popular with amateur photographers, artists, and
scientists, who used it widely, since the negative
could be corrected with pencil.
Bibliography lists 5 sources.
Filename: BBcalotp.doc
Effects of Volatile Anesthetics on G Proteins
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This 12 page
report discusses the effects of volatile (inhalation) anesthetics
on G-proteins. G proteins are a key to the chemical “switches”
that get take place in order to communicate messages in the body.
As the receptors react, they change shape which then allows for
the G protein to also change. It releases the a GDP molecule and
grabs onto a related molecule called GTP. Having attached the
GTP to itself, it then acts on membrane processes such as enzymes
and ion channels. That process then results in a new “messenger”
molecule -- cyclic AMP. An 'enzymatic cascade' then takes place
because the AMP causes a protein reaction. A literature review is
included that outlines a number of the projects regarding the
subject that have been undertaken in the past decade.
Bibliography lists 10 sources.
Filename: BWvolane.rtf
Energy Transfer in Cells
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This 5 page paper considers energy transfer in cells. The writer looks at the process, defining what is meant by energy and how it can be seen as a two way function of energy transformation. The writer includes consideration of the Laws of Thermodynamics, the role of Adenosine triphosphate (ATP) and metabolic pathways. The bibliography cites 3 sources.
Filename: TEcellen.wps
Enzymes and the Krebs Cycle
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A 5 page paper discussing enzymes at their most basic
level. Comprised of amino acids, enzymes are the catalysts of myriad biochemical reactions. In keeping with the true nature of catalysts, they accelerate and enable reactions without being materially affected themselves. The second section of the paper presents a diagram of the Krebs or citric acid cycle. Taking place in the mitochondria of the cell, the citric acid cycle is the last in a series of steps that convert 'food' into 'energy.' Bibliography lists 5 sources.
Filename: KSenzyme.wps
Equilibrium and Drinking Water Purification
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A 5 page exploration of the chemical factors that facilitate the use of reverse osmosis to purify drinking water. Bibliography lists 3 sources
Filename: PPosmosisReverseSaltWater.rtf