Dartmouth Digital Library Program

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Computational studies of small group IB clusters and their van der Waals complexes.
Transition metal complexes -- Spectra. ; Chemical reaction.
Dartmouth Dissertations

Novel compression techniques with applications in medical image acquisition and image storage.
Image compression. ; Image processing -- Digital techniques. ; Diagnostic imaging. ; Magnetic resonance imaging. ; Coding theory. ; Wavelets (Mathematics).
This thesis is divided into 2 parts. In the first part of the thesis, we describe a software based approach to speeding up the Magnetic Resonance Imaging modality. In the second part of the thesis, we describe Significance Tree Quantization, which...
Dartmouth Dissertations

The problems of perception and regulation in the relationship between activities and mood.
Mood (Psychology)
Dartmouth Dissertations

The neural assembly of place cells and head direction cells.
Limbic system -- Psychophysiology. ; Neuropsychology. ; Cell interaction.
Previous research has identified neurons in a variety of limbic structures which discharge in relation to the animals ongoing head direction (HD) (Ranck 1984; Taube et al. 1990a) or location (O''Keefe & Dostrovsky 1971). Because these signals...
Dartmouth Dissertations

Bethanechol and central respiratory control.
Bethanechol. ; Anesthetics.
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

The mitotic protein p62 is localized to the nucleolus during interphase.
Nucleoproteins. ; Mitosis. ; Nucleolus. ; Molecular biology.
Mitotic apparatuses from sea urchin embryos contain a protein (p62), previously shown to be required for mitotic progression. This protein localizes to the mitotic apparatus during cell division in urchin embryos and mammalian tissue culture cells....
Dartmouth Dissertations

Insights into the assembly and organization of higher-order septin structures.
Septins. ; Proteins -- Structure. ; Fluorescence spectroscopy. ; Molecular biology -- Instruments. ; GTP-Binding Proteins.
Dartmouth Dissertations

Attended and unattended semantic priming as a function of the orienting task performed on an attended prime.
Perception. ; Human information processing.
Dartmouth Dissertations

A psychophysical investigation of cortical cell receptive field organization in the human visual system.
Visual perception. Visual discrimination.
Dartmouth Dissertations

Quantifying optical tomography methods for biomolecular sensing / by Jennifer-Lynn H. Demers.
Diffuse optical imaging techniques can be combined with standard imaging technologies such as computed tomography (CT) and magnetic resonance (MR) imaging to allow measurement of spectroscopic signals pertaining to the molecular components of...
Dartmouth Dissertations

Excitation transfer in strain-induced quantum wires and dots.
Semiconductors -- Optical properties. Quantum wells. Quantum electronics.
Quantum wires and dots can be created by patterning inhomogeneous strain on semiconductor quantum wells. I have used laser spectroscopic methods to study the carrier transfer from the host quantum well to quantum wires and dots. For quantum dot...
Dartmouth Dissertations

Localization of excitons in an indirect gap GaAs / AlAs superlattice.
Exciton theory. Electroluminescence. Temperature. Gallium arsenide semiconductors. Superlattices as materials.
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

High resolution infrared spectroscopy and photolysis of solutes in cryogenic solids.
Infrared spectroscopy. ; Photodissociation. ; Argon. ; Nitrogen.
Dartmouth Dissertations

A new vortex model for free boundary layer flows.
Fluid dynamics. ; Vortex-motion. ; Boundary layer.
Dartmouth Dissertations

Development of a ruby fluorescence-based surface probe of tribological processes.
Plastics -- Testing. ; Fluorescent probes. ; Temperature measuring instruments. ; Tribology. ; Polytef -- Thermal properties. ; Nylon -- Thermal properties.
This research has established feasibility of surface temperature characterization using ruby fluorescence. Study was performed in pin-on-disk geometry, with balls made of different plastics sliding against the sapphire disk. Fluorescence signal was...
Dartmouth Dissertations

The molecular basis of chromium carcinogenesis.
Chromium. ; Carcinogens.
Dartmouth Dissertations

Studies on the structure and mechanism of the human erythrocyte glucose transporter.
Erythrocytes. ; Glucose -- Metabolism.
Dartmouth Dissertations

Ring current oxygen interaction with micropulsations.
Ionospheric drift. ; Magnetospheric currents. ; Electric fields. ; Geomagnetic micropulsations. ; Active oxygen.
Dartmouth Dissertations

Microfabricated thin-film inductors for high-frequency DC-DC power conversion
Electric inductors -- Design and construction.;""DC-to-DC converters -- Design and construction."";""Thin film devices -- Design and construction."";""Microfabrication."";""Magnetic films."";""Thin films Multilayered."";""Granular...
Dartmouth Dissertations

Selective serotonergic modulation of cortical pyramidal neurons in the rodent prefrontal cortex / by Daniel Avesar.
Serotonin (5-hydroxytryptamine, 5-HT) in the prefrontal cortex (PFC) plays an important role in cognitive processing and emotional regulation, and altered serotonergic signaling in the cortex is associated with disorders such as schizophrenia,...
Dartmouth Dissertations

Diffuse tomography of absorbing and fluorescent optical exogenous contrast guided by simultaneously acquired magnetic resonance images.
Optical tomography. Fluorescence. Imaging systems -- Design and construction. Diagnostic imaging -- Mathematical models. Brain -- Diseases -- Diagnosis. Brain -- Magnetic resonance imaging.
Fluorescent molecules targeted to reveal information on tissue function have been used as research tools in ex vivo and subsurface characterization of diseased tissue for years. Exploiting this specificity for in vivo imaging through centimeters of...
Dartmouth Dissertations

Role of Whi3 protein aggregation behavior in cell-cycle regulation and cell polarity / by ChangHwan Lee.
Whi3 is a G1/S regulator and known to inhibit G1 CDK activity. It was first described as a cell-size control gene in a set of cell division cycle mutants in Saccharomyces cerevisiae. Dysfunction or deletion of Whi3 leads to abnormal cell cycle...
Dartmouth Dissertations

Advancement of magnetic resonance poroelastography for applications in brain imaging / by Adam J. Pattison.
Brain tissue mechanics are an important biomarker for neurological disorders, yet methods to obtain tissue information yield inconsistent conclusions. These techniques can be invasive or require excised tissue, where tissue function is altered from...
Dartmouth Dissertations

Alterations in the production of bacteriochlorophyll a and okenone in purple sulfur bacteria : implications for the interpretaion of their biomarkers / by Derek A. Smith.
Purple sulfur bacteria (PSB) can dominate the nitrogen, carbon, and sulfur cycles in anoxic ecosystems via their anoxygenic photosynthetic metabolisms and are the only producers of the carotenoid, okenone, a biomarker targeted for photic zone...
Dartmouth Dissertations

Noninvasive fluorescence monitoring for functional assessment of murine glioma treatment.
Gliomas -- Immunotherapy -- Evaluation. Fluorescence spectroscopy. Diagnosis.
Molecular optical imaging in vivo has potential for functional assessment of tumor tissue at the cellular and subcellular level. Advances in biological understanding of genomics and proteomics have increased the knowledge of possible cellular...
Dartmouth Dissertations

Intrinsic photoconductivity in molecular crystals,
Crystals -- Electric properties.; Photoconductivity.
Dartmouth Dissertations

Excitatory and inhibitory properties of human facial expressions of emotion.
Facial expression. Emotions.
Dartmouth Dissertations

Spectroscopic analyses of type Ia supernovae / by Jerod Parrent.
After decades of searching we have yet to find the progenitor systems for type Ia supernovae. In fact most of what we know about this homogeneous class of supernovae is from spectral features associated with the incinerated remains of the C+O white...
Dartmouth Dissertations

Nerve growth factor and the septohippocampal system / by Lan Guo.
Nerve growth factor (NGF), the prototypic neurotrophin, is well characterized for its pro-survival and growth effects in sympathetic and sensory neurons. Acting as a target-derived factor, NGF regulates the maturation of innervating neurons, and...
Dartmouth Dissertations

Ground and space observations of medium frequency auroral radio emissions / by Matthew C. Broughton.
The auroral zone is a rich source of natural radio emissions that can be observed in space and at ground-level. By studying these waves, scientists can gain insight into the plasma processes that generate them and use the near-Earth space...
Dartmouth Dissertations

Targeting CFTR endocytic interactions as a therapeutic strategy in cystic fibrosis / by Lemira Sahar Al Ayyoubi.
Despite the recent FDA approval of the potentiator drug Kalydeco for treatment of cystic fibrosis (CF), only a small (3-5%) portion of patients benefit from this drug. Other functional classes of drugs including correctors are under clinical...
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

Magneto-spectroscopy of strain-induced quantum wires and dots.
Quantum wells. Semiconductors. Spectrum analysis.
Magneto-spectroscopy is used to characterize the confinement properties of strain-induced quantum wires and dots. The wires and dots are low energy regions in an ordinary GaAs/AlGaAs quantum well that are formed when microscopic...
Dartmouth Dissertations

Studies on hepatic uroporphyrinogen oxidation and its role in the uroporphyria caused by polyhalogenated aromatic hydrocarbins.
Porphyrins -- Oxidation. Aromatic compounds. Hydrocarbons.
Dartmouth Dissertations

Strain confined GaAs/A1xGa1-xAs quantum wires and quantum dots: experiment and theory.
Nanostructures. Semiconductors -- Optical properties. Quantum wells.
Dartmouth Dissertations

Optical properties of some amorphous and crystalline Al Cu alloys.
Aluminum-copper alloys -- Optical properties. Optical films. Alloys -- Analysis.
Dartmouth Dissertations

Spectroscopic and magnetic studies of the nickel metalloenzyme urease.
Urease. Urease -- Magnetic properties. Urea. Hydrolysis.
Dartmouth Dissertations

Induced optical effects in germanium-doped silica glass.
Silica, Vitreous -- Optical properties.
Dartmouth Dissertations

A Cerenkov-Raman maser.
Masers. Cherenkov radiation.
Dartmouth Dissertations

Theory of magnetoabsorption lineshapes in type I superconductors.
Superconductors -- Magnetic properties. Impedance (Electricity).
Dartmouth Dissertations

Modulation of CYPS: effect on acetaminophen hepatotoxicity.
Hepatotoxicology. ; Cytochrome P-450 -- Pathophysiology. ; Acetaminophen -- Toxicology. ; Alcohol -- Pathophysiology.
Cytochrome P450 (CYP) 2E1 is considered the sole CYP responsible for APAP bioactivation leading to hepatotoxicity. CYP2E1 is also considered the alcohol-inducible CYP and therefore, the sole CYP responsible for alcohol-mediated increases in APAP...
Dartmouth Dissertations

Nonequilibrium dynamics of magnetic nanoparticles in biomedical applications / by Daniel Benjamin Reeves
Magnetic nanoparticles are promising candidates for use in biomedical applications as remote sensors of biophysical properties, thermal therapy agents, and detectors of specific biomolecules. Many approaches have been used to model magnetic...
Dartmouth Dissertations

In vivo fluorescence imaging and tomography methods to quantify metastatic burden in lymph nodes / by Alisha Viola DSouza
Morbidity and complexity involved in lymph node staging via surgical resection and biopsy could ideally be overcome using node assay techniques that are non-invasive. Visible blue dyes, fluorophores and radio-tracers are often used to locate the...
Dartmouth Dissertations

Identification and characterization of two mutants that affect Drosophila phototransduction.
Drosophila. Photoreceptors. TRP channels. Cellular signal transduction.
The phototransduction cascade in Drosophila is a prototypical G-protein signaling pathway and many of its components have been well-studied. Early genetic screens identified many of the major proteins involved in this pathway and study over the...
Dartmouth Dissertations

The relationship between the apomorphine and the narcotic receptors of the emetic chemoreceptor trigger zone of the cat.
Emetics. ; Apomorphine. ; Morphine.
Dartmouth Dissertations

Diffusion-weighted magnetic resonance imaging with high gradient fields.
Magnetic resonance imaging. ; Nuclear magnetic resonance.
Diffusion-weighted magnetic resonance imaging (MRI) provides unique contrast reflecting the translational motion of water in its microscopic environment. This imaging modality has been shown to highlight infarcted regions within minutes after an...
Dartmouth Dissertations

Individual differences in callosal organization: relationship to interhemispheric communication and hemispheric asymmetries.
Corpus callosum -- Physiology. Cerebral hemispheres. Laterality. Sensorimotor integration. Brain -- Localization of functions.
The overarching goal of the dissertation was to further understanding of the relationship between callosal organization, functional lateralization, and interhemispheric communication in the healthy, young adult brain. Three converging methodologies...
Dartmouth Dissertations

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