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- Photoconductivity of optical fiber preforms.
- Optical fibers -- Measurement. ; Photoconductivity -- Measurement. ; Second harmonic generation.
- Dartmouth Dissertations
- Oxidative demethylation at C-4 of steroids.
- Methylation. Hydroxylation. Steroids.
- Dartmouth Dissertations
- Intrinsic photoconductivity in molecular crystals,
- Crystals -- Electric properties.; Photoconductivity.
- Dartmouth Dissertations
- The synthesis and chemistry of novel cyclic perfluoromethyl-substituted molecules.
- Fluorine compounds.
- Dartmouth Dissertations
- A photoexcited three-component electron-hole plasma in type II GaAs/AlAs quantum wells.
- Electron-hole droplets. Plasma (Ionized gases). Quantum wells.
- Dartmouth Dissertations
- Localization of excitons in an indirect gap GaAs / AlAs superlattice.
- Exciton theory. Electroluminescence. Temperature. Gallium arsenide semiconductors. Superlattices as materials.
- Dartmouth Dissertations
- Induced optical effects in germanium-doped silica glass.
- Silica, Vitreous -- Optical properties.
- Dartmouth Dissertations
- Photorearrangements of aryl halides.
- Photochemistry. Halides.
- Dartmouth Dissertations
- Circadian and non-circadian oscillators in Neurospora crassa.
- Circadian rhythms. Neurospora crassa -- Genetics. Genetic transcription -- Regulation. Choline. Temperature. Circadian Rhythm -- genetics. Choline Deficiency -- genetics.
- The circadian clock of the filamentous fungus, Neurospora crassa, consists of a frequency-white-collar ( frq-wc ) based and transcription-translation-derived oscillator. Negative feedback regulation is essential for the oscillatory process, in...
- Dartmouth Dissertations
- Functionalization of fluorocarbons.
- Fluorocarbons -- Synthesis. Fluorocarbons -- Derivatives. Activation (Chemistry). Polytef -- Surfaces. Organofluorine compounds -- Synthesis.
- The great strength of the C-F bond has enabled fluorocarbons to find many industrial and domestic applications, and makes C-F activation a chemical and technical challenge akin to that of C-H bond activation in hydrocarbons. In our mission to...
- Dartmouth Dissertations
- Rhodopsin-arrestin complex formation as a novel mechanism for light-dependent retinal degeneration.
- Visual pigments. ; Cellular signal transduction. ; Rhodopsin. ; G proteins. ; Phosphorylation. ; Photoreceptors. ; Retinal degeneration.
- Arrestins are regulatory proteins that participate in the termination of G protein-mediated signal transduction. The major arrestin in the Drosophila visual system, Arrestin 2 (Arr2), has been demonstrated to be essential for the termination of the...
- Dartmouth Dissertations
- A novel role for visual arrestin in endocytosis-mediated retinal degeneration.
- Phospholipase C -- Mechanism of action. Retinal degeneration -- Pathophysiology. Retinal degeneration -- Genetic aspects. Endocytosis. Rhodopsin. Cellular signal transduction. Light -- Physiological effect. Arrestin. Clathrin. Adaptor Proteins
- Mutations in the Drosophila retinal-specific Phospholipase C (NORPA) cause massive retinal degeneration within five days of constant light exposure. We have previously shown that in norpA mutants persistent complexes between the light receptor...
- Dartmouth Dissertations
- Photo-induced free ion formation in charge transfer complexes.
- Electron donor-acceptor complexes. ; Complex compounds. ; Photochemistry.
- In this study we have utilized spectroscopic and photoconductivity techniques to investigate free ion formation in the fumaronitrile/trans-stilbene charge transfer-complex. We report free ion yields resulting from the direct excitation of this...
- Dartmouth Dissertations
- Part I, a photoprecursor for difluorocarbene: Part II, syntheses and studies of the highly fluorinated [2.2.2] propellanes.
- Organofluorine compounds -- Synthesis. Carbenes (Methylene compounds) -- Synthesis. Propellanes -- Synthesis.
- Part I. A photoprecursor for difluorocarbene . The goal of this research was to develop a more practical and efficient photoprecursor for difluorocarbene. The first approach was concerned with the synthesis of 4,4-difluoropyrazoline-3,5-dione ( 5...
- Dartmouth Dissertations
- Structure and function of misfolded rhodopsin protein in Retinitis pigmentosa.
- Retinitis pigmentosa -- Pathogenesis. Retinitis pigmentosa -- Genetic aspects. Rhodopsin. G proteins -- Receptors. Prostacyclin -- Receptors.
- Retinitis Pigmentosa is an inherited retinal degenerative disorder, initiated by point mutations on the rhodopsin gene. This thesis set forth to understand the mechanism of this pathogenesis, as well as to further improve our understanding of...
- Dartmouth Dissertations
- Optical vibration detection with a four-point photoconductance-monitoring array.
- Photoconductivity -- Measurement. ; Optical detectors -- Design and construction. ; Vibration -- Measurement.
- This thesis reports work on a new device to detect changes in spatially nonuniform intensity distributions, and shows how this device can be applied to the particular problem of optical vibration detection. The phase of optical radiation is very...
- Dartmouth Dissertations
- Synthesis and chemistry of fluorinated cyclopropenes: The α excited state in polycyclic aromatic hydrocarbon photochemistry.
- Cyclopropane. ; Fluorination. ; Excited state chemistry. ; Photochemistry. ; Aromatic compounds.
- Dartmouth Dissertations
- Theoretical study of carbon-heteroatom clusters: Theoretical study and comparison of the intradiol and extradiol oxidation of catechol.
- Catechol -- Biodegradation. Glycols. Oxidation. Carbon compounds -- Mathematical models.
- Part 1 . A computational study targeting the lowest energy structure, electronic state and physical properties of small carbon clusters containing one or two heteroatoms has been done. The structural properties sought included whether the most...
- Dartmouth Dissertations
- Synthetic, mechanistic, photochemical studies of highly fluorinated organic compounds. Part I; Perfluorobicyclo[2.2.0]hex-1(4)-ene. Part II.
- Organofluorine compounds -- Synthesis. ; Organofluorine compounds -- Thermal properties. ; Fluorination. ; Photochemistry.
- Dartmouth Dissertations
- Role of rhodopsin endocytosis and NF-kappa B signaling in mediating light-dependent retinal degeneration.
- Retinal degeneration -- Genetic aspects. Photoreceptors -- Molecular aspects. Cell death. Endocytosis. Rhodopsin. NF-kappa B (DNA-binding protein) Cellular signal transduction.
- In humans, progressive loss of vision accompanies many inherited retinal degenerative disorders. In many cases, the affected genes are known. However the molecular pathway of photoreceptor cell death is still elusive. In this thesis, I describe the...
- Dartmouth Dissertations

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