Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"rotational correlation time"”.
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Advanced Fluorescence Lifetime Imaging and Spectroscopy Techniques for Biological Samples
… It was demonstrated that the fluorescence lifetime of BODIPY-Ci2 in methanol/glycerol mixtures is related to viscosity via the Forster-Hoffmann equation, and the rotational correlation time depends on viscosity based on the Stokes-Einstein-Debye equation. The intracellular viscosity is measured …
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Multinuclear NMR Studies of Hemoproteins and Their Model Compounds
… of the chemical shielding tensor and the rotational correlation time of the protein. The oxygen-17 NMR signals from CO ligands bound to oxygen-transport hemoproteins are much narrower than expected, and the lineshape is non-Lorentzian. The results indicate that the unusual linewidths and …
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Local Viscosity and Environment on the Nanometer Scale
New optical setup for two photon excitation time-resolved fluorescence anisotropy and lifetime measurements was built and used to understand the local environment and viscosity. The rotational correlation time constants by the fluorescence anisotropy provide the information on the hydrodynamic …
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Fluorinated Paramagnetic Probes for 19-F and 1-H MRS/ MRI
… interplay between applied field, Ln(III) ion and rotational correlation time on relaxation properties. Strategies employed to enhance signal intensity are discussed, examining a number of different of fluorinated mono- and di-amide cyclen ligands. Systems incorporating phosphinate pendant arms are …
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Applications of pump-probe and two-photon techniques in time-resolved fluorescence miscroscopy and spectroscopy
… molecular phenomena. We developed a variation of time-resolved, pump-probe methodology using cross-correlation principles of the frequency-domain. An unique feature of our technique is that the low-frequency, cross correlation signal and its harmonics which contain lifetime information at high …
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EPR of powders, crystals, and clays of MRI contrast agents: zero field splitting and proton relaxation
… bound to a variety of macromolecules to increase rotational correlation time. This increases the proton relaxation rate, providing better contrast. In current use, the electron spin correlation time of Gd III is the critical time in determining the proton relaxation rate. This electron correlation …
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The Preparation, Functionalization and Biomedical Applications of Carbonaceous Nanomaterials
… Gd₃N@C₈₀ suggests that aggregation and rotational correlation time plays an important role in relaxation, and the relaxivities and aggregation of the water-soluble metallofullerenes can be tuned by varying the molecular weight of the functionality. TNT-EMFs can be encapsulated inside …
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Investigations of the Role of Triglycerides in Synthetic Colloidal Systems
… produced with triglycerides have longer lifetimes under ultrasonication, and further experimentation is proposed to investigate this mechanism. A secondary focus of this work was to use multiparametric analysis of the fluorescence behavior of Laurdan to investigate PL membrane phase. Ternary …
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Specific Binding Affinity of the Non-Catalytic Domain of Eukaryotic Like Type IB Topoisomerase of vaccinia Virus
<p>Topoisomerases are ubiquitous proteins that alter supercoiling in double stranded DNA (dsDNA) during transcription and replication and. <em>vaccinia</em> and the closely related poxvirus <em>variola</em> virus, at 314 amino acids in length, encode the smallest of the type I …