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 20 of 725 for “"Dimer"”.
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Dimer models and limit shapes from different perspectives
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Mathematical and experimental approaches to the dimer catastrophe theory
… be detrimental to both plasmid and host. Plasmid dimers emerge through homologous recombination. Dimers have two independent origins of replication and thus have a replicative advantage and reduced copy number. Models of plasmid behaviour suggest that dimers would overtake a cell population, but …
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Singlet Exciton Fission in Acene Dimer and Diradicaloid Molecules
… exciton fission, in three different acene dimers and diradicaloids. In pentacene and tetracene dimers, we investigate their mechanism of singlet fission. In a series of diradicaloids, we study the relation between molecular structure, diradical character and the suitability for singlet …
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Models for the formation of 5.8S ribosomal RNA dimer
… the molecule complexes with itself to form dimers and higher multimers. Two models have been proposed in the literature to explain the intermolecular interactions responsible for 5.85 rRNA dimer formation. The terminal interaction model of Sitz et al. (Biochem. 17, 5811-5815, 1978) proposes …
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Metagenomics-Based Tryptophan Dimer Natural Product Discovery and Development Pipeline
… relevant biological activity arise from the dimerization of tryptophans, such as staurosporine, rebeccamycin, and violacein. To discover novel tryptophan dimers (TDs), we have designed a metagenomics-based TD natural product discovery and development pipeline that consists of seven steps: 1) …
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Structure and Dynamics of the Myosin Dimer Using Fluorescence Techniques
Lastly, I present preliminary results on the development of a new technique called two-color FRET-FCS (a combination of Fluorescence Resonance Energy Transfer and Fluorescence Correlation Spectroscopy) and its application to the dynamical study of a model DNA hairpin. This technique can ultimately …
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Structure and activation of the class D GPCR dimer Ste2
… with the G protein. Ste2 exists as a homodimer in all the different states with an extensive dimer interface formed by the domain-swapped N-terminus, extracellular loop 1 and helix H1. The region immediately C-terminal of helix H7 in the inactive state transitions into an ordered α-helix …
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Two-dimensional Spectroscopy of Molecular Excitons in a Model Dimer System
… room temperature, we present a study of a model dimer comprised of identical chromophores with a well defined electronic coupling strength, to provide clear signatures for coherences between vibronic excitons in 2D spectra. We begin by describing the design of a broadband passively …
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Research Towards the Development of an Optically Pumped Cesium Dimer Laser
… and attractive characteristics. Cs2 has a dimer configuration of vibrational and rotational structure. Cesium is the heaviest of all alkali metals, and has the densest vibrational and rotational levels compared to any other alkali metal. With the most rotational and vibrational viii …
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Subradiant, superradiant and Fano resonances in dimer and ring/disk nanocavities
… a dolmen-style slab arrangement, a ring/disk dimer, a ring/disk cavity and a colloid dimer, clearly exhibit the strong polarization and geometry dependence expected for this behavior at the individual nanostructure level, confirmed by experimental result in each case, multiple Fano resonances …
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Human RNase MRP complexes: The Rpp25-Rpp20 dimer makes the difference
Contains fulltext : 30946_humarnmrc.pdf (Publisher’s version ) (Open Access)
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Femtosecond laser studies of molecular wavepacket dynamics in the cesium dimer
… dynamics in the excited states of the cesium dimer, Cs$\sb2.$ The real-time vibrational motion of the molecule is observed by probing the quantum motion of the wavepacket on a potential surface by a pair of time-delayed ultrafast laser pulses. Specifically, pumping the $\rm …
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Time-resolved absorption spectroscopy of the rare gas dimer Rydberg states
… inter-Rydberg transitions of the rare gas dimers (He$\sb2$ through Kr$\sb2$) have been observed both through intra-cavity and multi-pass laser absorption spectroscopy.
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An investigation of the structure of the dimer of 2,6-dibenzalcyclohexanone
Thesis: B.S., Massachusetts Institute of Technology, Department of Chemistry, 1960
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Density functional theory study of the conductivity of the biphenalenyl radical dimer
… triplet states. We performed calculations on the dimer to study its conductivity by investigating the ground state energy, HOMO-LUMO gap, charge localization, and reorganization energies, as these are the main contributing factors to crystal conduction. We find that there is only a slight …
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Characterization and Inhibition of the Dimer Interface in Bacterial Small Multidrug Resistance Proteins
… (TM) helices] must form at the minimum dimers to efflux drugs. We have used the SMR homologue Hsmr from Halobacterium salinarum to investigate the oligomerization properties of the protein family at TM helix 4. We produced point mutations along the length of the TM4 helix in the full …
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Role of interleukin-8 monomer-dimer equilibrium and glycosaminoglycan interactions in neutrophil recruitment
… including IL-8 exist as both monomers and dimers and in vitro studies have shown that both monomers and dimers of IL-8 can bind to GPCRs and GAGs, though with different affinities and specificities. However, the role of monomers, and dimers and of monomer-dimer equilibrium in regulating in …
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A Time-Resolved Fluorescence Study of Silicon Nanoparticles: Testing the Dimer Stretching Model
The role of surface dimers in the fluorescence mechanism is explored using the theoretical framework of Allan, Delerue, and Lanoo [1]. Their single dimer computations are extended to a fully reconstructed structure using time dependent density functional theory. Despite the inclusion of a fully …
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