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 155 for “"dipoles"”.
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Investigations of Normal Mode Helical Dipoles
Made available in DSpace on 2014-12-08T22:24:33Z (GMT). No. of bitstreams: 1 6910889.pdf: 3630401 bytes, checksum: e8957c6b1d2164e72fbb5db99142af43 (MD5) Previous issue date: 1968
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Dynamics of Dipoles in the Middle Atlantic Bight
<p>Beginning with the observations made by the Warm-Core Rings program in the early 1980's, several Gulf Stream warm-core rings (WCR's) in the Middle Atlantic Bight (MAB) have been observed with one or more cyclones around their periphery. These ring systems are observed in the slope water between …
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Laser-molecule Interactions And The Effects Of Permanent Dipoles
… predict and interpret the effects of permanent dipoles on the temporal behaviour of the molecular states for a decaying two-level system interacting with a CW laser, and for a non-decaying two-level system interacting with a pulsed laser. It is shown that the excited state lifetime and the pulse …
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Studies of the magnetic dipoles of the Earth and the planets
本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである
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Few- and many-body physics of dipoles in ion traps and optical lattice simulators
… This model attributes the noise to fluctuating dipoles formed by adsorbates bound on the trap surface. The second part of the thesis studies three different lattice boson systems. First, we study the Bose-Hubbard model for hard-core bosons, interacting via dipole-dipole interactions. The …
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Characterization of the Central Cavity of a Potassium Channel: Helix Dipoles, Conformational Plasticity and Inhibition
… dipole effect. We studied the role of helix dipoles in KcsA using protein semisynthesis in order to modify the backbone of KcsA and reduce the dipoles of the implicated helix termini. The modified protein was studied by both X-ray crystallography and electrophysiology, demonstrating that the …
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Depolarized Rayleigh Light Scattering Studies of Orientational Pair Correlations in a Nematic Liquid Crystal, the Coupled Translational - Rotational Diffusion of Rod-Like Macromolecules and the Method of Atom Dipoles
Made available in DSpace on 2014-12-10T23:02:04Z (GMT). No. of bitstreams: 1 7511575.pdf: 5369552 bytes, checksum: 6b862e0c4495391c04cb79b8c47bfb40 (MD5) Previous issue date: 1974
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Source reconstructions for IC radiated emissions based on magnitude-only near-field scanning
… Three essential transformations among dipoles and fields are continued at each iteration step, until the convergence condition is achieved. The proposed algorithm has been verified by using a set of dipole-array as the original emitting sources, and also validated by simulating the …
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Absorption optique résonnante dans des films diélectriques discontinus sur les substrats métalliques
… approche qui considere l ’interaction entre les dipoles induits et les dipoles images (dans le substrat). Une comparaison avec des mesures experimentales dans la region de 450 nm a 650 nm est aussi presentee et montre une concordance tres satisfaisante. L’absorption observee proviendrait du …
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Particle filtering for EEG source localization and constrained state spaces
… the position and moments of multiple dynamic dipoles and apply the marginalized PF, which alleviates the "curse of dimensionality" for tracking multiple dynamic dipoles. This modified framework allows us to consider dynamic dipoles, which were historically considered time-invariant.
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Deformation at Low Temperatures in Single Crystal Ni-base Superalloys
… including planar faults, dislocation loops and dipoles. These defects were common to all alloys studied, but changed in an alloy-specific manner as a function of temperature. Large numbers of fine-scale dislocation loops were observed from 350 °C to 650 °C, with greater numbers in CMSX-4 and …
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Investigation of the Triplet State Properties of Bis(chlorophyll)cyclophane and Its Partially Metalated Derivatives
… center to center with the Q(,y) transition dipoles of each macrocycle perpendicular. Zero, one, or two magnesium(II) ions can be inserted into the macrocycles. The properties of the photoexcited triplet state of the cyclophanes were studied using light modulated EPR (electron paramagnetic …
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A Description of the Electrostatic Interactions of Fluorophores With Polar Solvents Based on A Gaussian Distribution of Interaction Energies (Danca, Prodan)
… which interact independently with solvent dipoles. The orientation of a solvent dipole with respect to each monopole is given by the Langevin function, assuming a Gaussian distribution of interaction energies. A mathematical description of the solvent dependence of electronic spectra of …
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Theory of phase transitions in liquid crystals and plastic crystals
… The smectic H phase results from ordering of the dipoles. We also get a smectic E phase with a herringbone structure resulting from ordering of the phenyl groups, and a smectic G phase resulting from order of both dipoles and phenyl groups. A Landau or continuum theory of the orientational phase …
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Optical modeling of organic electronic devices
… energy conversion. Due to the large transition dipoles, the localization of excited states or excitons in organic materials necessitates optical models that extend beyond classical far field methods. In this thesis we propose an extended near field calculation method using dyadic Green's …
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Cycloadditions to 1-azetines and 1-azetin-4-ones
… cycloaddition reactions with a variety of 1,3-dipoles and dienes was investigated.Nitrile oxides (5) and nitrile ylides (7) were found to add smoothly to the 1-azetine systems to yield the bicyclic adducts (6) and (8) respectively.Nitrile imines (9) also add to 1-azetines in a similar fashion …
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Structural and functional analysis of glycosyltransferase mechanisms
… closer than the closest observed enzymatic dipoles (4.8 Å). This is an indication that the active site architecture is more suited to facilitate a mechanism initiating with nucleophilic attack than dissociation. To ensure that these observations are applicable to other glycosyltransferases, …
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Density functional theory investigations of graphene-based heterostructures
… systems, we find that the electrostatic dipoles at the Gr/palladium and Gr/Gr interfaces are oppositely oriented. This leads to a work function of bilayer graphene domains on palladium (111) higher than that of monolayer graphene; the strengths of these dipoles are sensitive to the …
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Antennas using left handed transmission lines
… and design of conventional wire antenna types, dipoles and loops, based on the left-handed transmission line approach. The left handed antennas have a unique feature that the wavelength of the induced current becomes shorter with decreasing frequency. The left handed transmission line concept …
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Probing Exciton Dynamics in Metal–Organic Frameworks
… porphyrin acceptor by anchoring their transition dipoles at 90° to each other. Chapter 3 brings MOFs’ nuclear degrees of freedom into consideration, and identifies spectral footprints left by excitons’ coupling to the intramolecular vibration of the organic building units. These vibronic …
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