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 886 for “"Valence"”.
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Core-valence-valence auger spectra of the simple metals
A comprehensive study of the core-valence-valence (CVV) Auger line shapes for the simple metals, Li, Be, Na, Mg, and AI, is presented. Calculations of these line shapes are performed with a static many-body model which treats the (static) screening of a core hole by conduction electrons with a …
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Novel Organometallic Mixed Valence Complexes
Organometallic mixed valence complexes have been studied extensively over the past 30 years providing many synthetic and theoretical challenges. This thesis has sought to provide the field with a unique family of mixed valence complexes through which theories of electron transfer in weakly coupled …
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Valence and structure relationships in oligonucleotides
… estimate the degree of shielding and predict the valence of a nucleic acid. Here, Counter-ion Condensation theory and Grand Canonical Monte Carlo simulations are compared with an experimental approach. Membrane-Confined Electrophoresis was used to measure the effective valence of several nucleic …
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Dynamics and valence of actor engagement
… next iteration. Also, it is suggested that the valence of engagement influence both the process of engagement among multiple actors in the network and the network's evolution, which motivates the second study. The second study conceptualises engagement valence in actor networks. It defines the …
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Electron Transfer in Mixed-Valence Metallocenes
Made available in DSpace on 2014-12-13T20:10:49Z (GMT). No. of bitstreams: 1 8009078.pdf: 6044542 bytes, checksum: dc6b33993d220ce7e220b978df6e2b85 (MD5) Previous issue date: 1979
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Amygdala circuits underlying valence-specific behaviors
… can be categorized as negative and positive valence-related behaviors, respectively. The stereotypic nature of negative and positive valence-related behaviors suggests that threatening and rewarding stimuli engage evolutionarily predetermined neural circuits in the brain. The amygdala is an …
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A valence bond for several perturbations
A valence bond perturbation method is developed for the purpose of treating the pi electron spectra of molecules related to a parent conjugated hydrocarbon molecule. A spectral perturbation reflects the change in pi electron transition energy of the parent hydrocarbon as a result of heteroatom …
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Valence losses at interfaces in aluminium alloys
The aim of this project was to investigate EELS from two-layer systems and relate the results to the existing theory. Two systems were investigated, magnesium silicide platelets within an aluminium matrix and silicon precipitates within an aluminium matrix. Both systems were prepared through …
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Search for valence transitions in MgEu alloys
… a/o Eu, in order to study the possibility of a valence transition occurring in this system. Part of the experimental study was performed in collaboration with Dr. Gopal Shenoy of Argonne National Laboratory.</p> <p>In view of the importance of crystallographic and metallurgical structures in …
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Electron Transfer in Mixed-Valence Binuclear Ferrocenes
A single quadrupole-splint doublet is seen in the 4.5 K Mossbauer spectrum for the triiodide salt of 3-acetylbis-(fulvalene)diiron(1+). An IT band at 7140 cm('-1) (e = 1740 M('-1) cm('-1)) is evident in the electronic absorption spectrum. A relatively isotropic EPR signal and a C-H bending band at …
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Intervalence Electron Transfer in Mixed-Valence Compounds
Made available in DSpace on 2014-12-13T20:10:38Z (GMT). No. of bitstreams: 1 7915327.pdf: 7303658 bytes, checksum: c85fc8fd2bd6d4003131a1ba7b4ef6b2 (MD5) Previous issue date: 1979
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High-Pressure Studies on Mixed-Valence Systems
Made available in DSpace on 2014-12-10T23:01:41Z (GMT). No. of bitstreams: 1 7411978.pdf: 3167745 bytes, checksum: c05af2c1219f1e9e4a5b47afae4e24cf (MD5) Previous issue date: 1973
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Sixteen valence-electron species containing boron: structural diversity abounds
[B, C, F, H₂] and [B, N, O, H₂] have been investigated via high level ab initio calculations. Both cyclic and acyclic connectivities have been examined for the singlet state. Chemical intuition suggests a ketene-like structure for each system, with the general form H₂XBY, where X = C or N and Y = F …
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Valence transition and superconductivity in the extended periodic Anderson model
… is shown that the model in one dimension shows a valence transition, which becomes sharper, when the energy of the f level approaches the Fermi level. The transition becomes also enhanced, when the hybridization V between the localized and conduction electrons decreases, for the case that the …
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Felt_space infrastructure: Hyper vigilant spatiality to valence the visceral dimension
… infrastructure: Hypervigilant spatiality to valence the visceral dimension. This thesis evolves perception as a hypothesis to reframe architectural praxis negotiated through agent-situation interaction. The research questions the geometric principles of architectural ordination to originate …
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Optimization of the valence energy variance of the CuH molecule
… shell. The minimization of the variation of the valence shell local energy is used to optimize a simple two parameter CuH wave function. Molecular properties (spectroscopic constants and the dipole moment) are calculated for the optimized and nearly optimized wave functions using the Variational …
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The Role of Affect (Valence and Intensity) in Product Consumption
For both males and females, support was not found for a role of trait affect intensity in product consumption volume. However, partial support was found for the mediating role of the degree of information processing.
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Satisfaction and Motivation as Functions of Expectancy, Valence, and Goalattainment
Made available in DSpace on 2014-12-10T21:07:29Z (GMT). No. of bitstreams: 1 7219946.pdf: 8553608 bytes, checksum: bb9a8987bb74c66e1f1a2e42a3ee73c9 (MD5) Previous issue date: 1972
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