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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Search results

Showing 1 to 10 of 1531 (0.018 seconds)

Spelling suggestions: "subject:"isotope"" "subject:"lsotope""

1

Intramolecular Isotope Effects for the Study of Reactions with MassTransfer Limitations

Wagner, Joshua G. 16 January 2010 (has links)
The research presented provides a method to use the comparison of intermolecular isotope effects vs. the intramolecular isotope effects for the study of reactions in which study of the rate limiting step is ambiguous due to interfering mass transfer effects. The oxidation of unfunctionalized hydrocarbons at mild conditions developed by Sir Derek Barton, the Gif reaction is the model used. The history is provided to demonstrate the relevance of using this model as one which could show the usefulness of this method. Evidence has been provided and used to theorize that the rate limiting step of the reaction may be diffusion of the reactants, not a chemical change. Starting materials were made which would allow for the measurement for both the intermolecular and intramolecular KIE and those values were compared. The results show that there is little difference between the intermolecular and intramolecular KIE, therefore the reaction is not diffusion controlled.
Isotope Effects
2

Intramolecular Isotope Effects for the Study of Reactions with MassTransfer Limitations

Wagner, Joshua G. 16 January 2010 (has links)
The research presented provides a method to use the comparison of intermolecular isotope effects vs. the intramolecular isotope effects for the study of reactions in which study of the rate limiting step is ambiguous due to interfering mass transfer effects. The oxidation of unfunctionalized hydrocarbons at mild conditions developed by Sir Derek Barton, the Gif reaction is the model used. The history is provided to demonstrate the relevance of using this model as one which could show the usefulness of this method. Evidence has been provided and used to theorize that the rate limiting step of the reaction may be diffusion of the reactants, not a chemical change. Starting materials were made which would allow for the measurement for both the intermolecular and intramolecular KIE and those values were compared. The results show that there is little difference between the intermolecular and intramolecular KIE, therefore the reaction is not diffusion controlled.
Isotope Effects
3

Equilibrium ²H/¹H fractionations in organic molecules

Wang, Ying. Sessions, Alex L. Rossman, George Robert, January 1900 (has links)
Thesis (Ph. D.) -- California Institute of Technology, 2010. / Title from home page (viewed 03/04/2010). Advisor and committee chair names found in the thesis' metadata record in the digital repository. Includes bibliographical references.
Isotope separation.
4

Enrichment of Co-60 by nuclear recoil thesis /

Domondon, Domingo B. January 1973 (has links)
Thesis (M.S.)--University of Michigan, 1973.
Isotope separation
5

The development of continuous-flow isotope ratio mass spectrometry methods and their application to the detection of food adulteration

Kelly, Simon Douglas January 2001 (has links)
No description available.
664
Stable isotope
6

NMR based studies of the DNA-binding domain from B-Myb

McIntosh, Pauline Bernadette January 1997 (has links)
No description available.
572
Isotope labeled; Protooncogene
7

An investigation of sulphur in carbonaceous and enstatite chondrites by stepped combustion

Burgess, R. January 1987 (has links)
No description available.
546
Sulphur isotope studies
8

'7'7Br isotope production for medical use

Osso, J. A. January 1986 (has links)
No description available.
541.38
Isotope production methods
9

Observation of Freedericksz transition in superfluid '3HeA

Gould, S. G. January 1986 (has links)
No description available.
530.41
Superfluid helium isotope
10

Isotope systematics of the freshwater mollusca Lymnaea peregra

White, Rowan May Patricia January 1998 (has links)
No description available.
551.9
Palaeoclimate; Oxygen isotope

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