P.K. Kuroda's Books

The Origin of the Chemical Elements and the Oklo Phenomenon

By: P.K. Kuroda

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The Origin of the Chemical Elements and the Oklo Phenomenon

By: P.K. Kuroda

At about the time I was a student in the 1930's, it had become increasingly evident that all the elements existing on the Earth today had already been discovered. Scientists then began "discovering" new elements by means of their artificial synthesis and some of the man-made elements found important military as well as industrial applications. I have often wondered, however, if the importance of these artificial elements may not have been overly emphasized by contemporary scientists for their practical applications. It seemed to me that these man-made elements were destined to play an important role du ring the second half of the 20th century in the study of the origin of the elements in the Universe. This subject of study, which dates back to the days of ancient Greek philoso phers, may be regarded as the most fundamental in the entire compass of our modetn science. Since I joined the faculty of the University of Arkansas in the early 1950's, I have had the good fortune of being able to maintain a long-range research project, the ultimate goal of which was to elucidate the origin of the elements. I have presented the results from these and related investigations on numerous occasions. While serving as a tour speaker of the American Chemical Society for many years, I have had the privilege of visiting many ofthe local sections to present a lecture on the origin ofthe elements.

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Page Count

172

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3642686672

ISBN 13

9783642686672

Thermal Biosensors/Bioactivity/Bioaffinity

By: P.K. Bhatia

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Thermal Biosensors/Bioactivity/Bioaffinity

By: P.K. Bhatia

The immobilized biocatalyst (IMB) is a key component of biotransformation systems that are used to transform substrates to desired products. The impro- ment of biocatalyst properties has a direct influence on the overall effectiveness of the process based on the biotransformation. The basic catalytic characte- stics of biocatalyst that are followed include kinetic properties, pH optima, stability, and inhibition. The investigation of catalytic properties of immobilized enzymes is still a time consuming procedure and is not always simple. In the 1980s, a major effort was made to standardize the rules by which IMB is char- terized. The Working Party of EFB on immobilized biocatalysts has formul- ed principles of individual methods, among them the requirement of kinetic characterization [1]. It was recommended to use a packed-bed reactor, equipped with temperature control and with infinite flow circulation. The system should be equipped with a post-column unit to measure the time-dependence of the product or substrate concentration [2, 3], the most commonly used analytical methods being spectrophotometry, chemiluminiscence, automatic titration, bioluminiscence, chromatography, polarimetry, and biosensors based on the oxygen electrode. There are two main drawbacks to the application of these methods: 1. The need to vary the analytical principles, depending on the chemical and physical-chemical properties of analytes; 2. In some cases, mainly in the study of hydrolytic enzymes, the natural s- strate must be replaced by an artificial one, that is chromolytic, chromogenic, chemiluminiscent, bioluminiscent, or fluorescent.

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Page Count

243

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3540649670

ISBN 13

9783540649670

Nanocomposite Membrane Technology

Fundamentals and Applications

By: P.K. Tewari

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Nanocomposite Membrane Technology

Fundamentals and Applications

By: P.K. Tewari

Nanocomposite Membrane Technology: Fundamentals and Applications is the first book to deliver an extensive exploration of nanocomposite membrane technology. This groundbreaking text offers an eloquent introduction to the field as well as a comprehensive overview of fundamental aspects and application areas. Approaching the subject from the material

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Page Count

325

Publisher

CRC Press

Published Date

ISBN 10

1466576839

ISBN 13

9781466576834

Book's by P.K. Kuroda

The Origin of the Chemical Elements and the Oklo Phenomenon

The Origin of the Chemical Elements and the Oklo Phenomenon

Thermal Biosensors/Bioactivity/Bioaffinity

Thermal Biosensors/Bioactivity/Bioaffinity

Nanocomposite Membrane Technology

Nanocomposite Membrane Technology

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