Browse Dissertations and Theses - Chemistry by Contributor "Belford, R. Linn"

• (1989)
The physical phenomenon of an organic molecule adsorbing onto a silica-alumina surface is a topic of great interest. Many questions concerning exactly how this phenomenon occurs still remain unanswered. Although Electron ...

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• (2011-05-25)
Functional nucleic acids (FNA), including nucleic acids catalysts (ribozymes and DNAzymes) and ligands (aptamers), have been discovered in nature or isolated in a laboratory through a process called in vitro selection. ...

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• (1990)
The analysis of electron paramagnetic resonance (EPR) spectra and the spectra from related techniques such as electron nuclear double resonance (ENDOR) spectroscopy, requires simulation of the experimental spectra. Simulating ...

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• (2002)
In order to increase our understanding of the relationship between the gadolinium chelate's chemical structure and its effectiveness as a MRI contrast agent, we have prepared and studied a number of chelates with ranging ...

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• (2010-05-19)
MRI (magnetic resonance imaging) has brought great advances to diagnostic medicine, especially with the use of contrast agent (CA’s) for comparison of images with and without contrast. Since the first use of Gd III CA’s ...

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• (2004)
Symplectic integrators are well known for preserving the phase space volume in Hamiltonian dynamics and are particularly suited for problems that require long integration times. There is a general operator splitting method ...

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• (2004)
Symplectic integrators are well known for preserving the phase space volume in Hamiltonian dynamics and are particularly suited for problems that require long integration times. There is a general operator splitting method ...

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• (1990)
Several magnetic resonance methods have been used for characterizing gadolinium-based contrast agents in NMR Imaging in this thesis. Many Gd-based contrast agents were studied including Gd DTPA(dimethylenetriaminepentaacetic ...

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• (1991)
This thesis is comprised of three parts. In the first, the Co-59 nuclear quadrupole coupling constants for cobalt-doped nickelbis(benzoylacetone)ethylenediimine were determined by EPR spectroscopy. The three rotation axes ...

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• (1997)
We have investigated several inorganic oxide systems using nuclear and electron magnetic resonance spectroscopies and also report a new pulse programming system for a pulsed S-band EMR spectrometer. We show in a study of ...

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• (1997)
It is shown that at high magnetic fields the Gd$\sp{3+}$ ion itself serves a sensitive probe for the microenvironment. This sensitivity allows, for example, observation of pH changes and measurement of partitioning of the ...

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• (1993)
The conventional electronic magnetic resonance (EMR) spectra of disordered samples often suffer poor resolution due to line-broadening. This thesis describes how a multi-frequency approach applied to the EMR studies of two ...

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• (1988)
Part I. A novel experimental technique, the L-band, B$\sb0$ $\Vert$ B$\sb1$ Electron Paramagnetic Resonance (EPR) spectrometer, is proposed as part of an overall "Multi-Frequency" analysis, as an effective method ...

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• (1990)
Electron spin echo (ESE) methods are particularly useful for measuring weak electron-nuclear couplings in paramagnetic solids. Frequencies that correspond to nuclear transitions are manifested in the electron spin echo ...

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• (1993)
Most Electron Paramagnetic Resonance (EPR, also known as ESR or EMR) experiments are performed at conventional 9 GHz or 35 GHz frequency. But there are numerous situations in which a large increase in the microwave frequency ...

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• (1990)
X-band ENDOR and S-band ESEEM have been employed in this study to measure weak electron-nuclear hyperfine and nuclear electric quadrupole couplings in paramagnetic disordered solids. In the X-band ENDOR investigation, ...

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