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

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