Dartmouth Digital Library Program

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Library Staff (Formal Group Photos)
Library Staff (Formal Group Photos)
Library Staff (Formal Group Photos); Identifications: 1. Monique C. Cleland; 2. Michael J. Lach; 3. Donald L. Saporito; 4. Molly M. O'Connor; 5. Theresa Blake; 6. Stanley Brown; 7. William B. Meredith; 8. Edward Connery Lathem; 9. June I. Hicks;...
Dartmouth College Photographic Files

Microwave imaging spectroscopy for breast cancer diagnosis.
Microwave spectroscopy. Imaging systems -- Design and construction. Diagnostic imaging -- Digital techniques. Breast -- Cancer -- Diagnosis. Microwave imaging in medicine.
Microwave spectroscopy has been investigated as a possible modality for breast imaging because of the significant contrast in electrical properties between normal and malignant tissue over the microwave spectrum. A liquid-coupled, non-contacting...
Dartmouth Dissertations

Examining relationships between health beliefs and medical decisions in the context of medical uncertainty.
Medical care -- Decision making. Health attitudes. Prostate -- Cancer -- Treatment -- Decision making. Prostate -- Cancer -- Patients -- Attitudes. Uncertainty. Video recording in medicine.
This dissertation used two studies to evaluate the appropriateness of a theoretical model exploring the relationships between screening/treatment beliefs and intending to be screened or treated for prostate cancer (P-CA). Study One examined...
Dartmouth Dissertations

A catalog of clusters to z [is less than or equal to] 1 from the Oxford Dartmouth Thirty Degree Survey.
Galaxies -- Clusters -- Mathematical models. Galaxies -- Formation -- Mathematical models. Galaxies -- Clusters -- Catalogs. Galaxies -- Spectra. Algorithms. Andromeda Galaxy.
A sample of 46 previously unidentified, intermediate- to high-redshift, near-infrared (NIR)-selected galaxy clusters have been discovered in the Andromeda catalog of the Oxford Dartmouth Thirty Degree Survey (ODTS). These clusters vary from low- to...
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

Influence of stromal cells on uterine epithelial cell function: direct and indirect effects of estradiol on epithelial cell integrity and cytokine release.
Uterus -- Physiology. Epithelial cells. Cellular control mechanisms. Estradiol -- Physiological effect. Cytokines -- Physiological effect. Hepatocyte growth factor. Transforming growth factors-beta. Tumor necrosis factor. Stromal Cells --...
Previous studies have shown that the mucosal immune system is present in the female reproductive tract and under hormonal control. With the recognition that underlying stromal cells regulate epithelial cell function and hormonal responsiveness,...
Dartmouth Dissertations

Gain experiments with a grating based free electron laser.
Free electron lasers -- Experiments. Wave guides -- Design and construction. Diffraction gratings -- Experiments. Electron beams. Infrared sources.
The far infrared region of the electromagnetic spectrum, 15-3000 Œºm in wavelength, has a paucity of narrow band laser sources. To address the issue of whether a grating based free electron laser could operate well as such a source, a grating...
Dartmouth Dissertations

Synthetic and mechanistic studies in tetrapyrrole chemistry.
Tetrapyrroles -- Synthesis. Tetrapyrroles -- Mechanism of action. Transition metal catalysts.
Previous studies have shown that the mucosal immune system is present in the female reproductive tract and under hormonal control. With the recognition that underlying stromal cells regulate epithelial cell function and hormonal responsiveness,...
Dartmouth Dissertations

The influence of habitat heterogeneity on variability in stream macroinvertebrate communities.
Freshwater invertebrates -- Ecology. Stream animals -- Ecology. Benthic animals -- Ecology. Ecological heterogeneity. Stream ecology -- New Hampshire. Animal communities.
Spatial heterogeneity inherent in ecological systems impacts both diversity and community structure. However, little is known about the influence of habitat heterogeneity on temporal variability in communities. I performed several studies to...
Dartmouth Dissertations

Radical methodologies with indole and synthetic strategies towards the indole alkaloids, echitamine and prenostodione.
Indole alkaloids -- Synthesis. Ring formation (Chemistry). Radicals (Chemistry).
A novel radical cyclization of 2-bromoindoles was examined, generating a series of hexahydropyrrolo[3,4- b ]indoles in fair yield. This process involved the generation of a variety of indole-3-carboxamides followed by the introduction of bromine at...
Dartmouth Dissertations

The representation of auditory space in the auditory pathway of primates.
Auditory pathways -- Physiology. Auditory perception -- Physiological aspects. Directional hearing -- Physiological aspects. Space perception -- Physiological aspects. Visual perception -- Physiological aspects. Primates -- Sense organs. Inferior...
Recent studies demonstrating that eye position modulates auditory responses in a brainstem auditory structure and in primary auditory cortex (Groh et al., 2001; Werner-Reiss et al., 2003a), suggest preparation of the auditory signal for eventual...
Dartmouth Dissertations

Mobility and communication in sensor networks.
Sensor networks. Robots -- Control systems. Detectors. Synchronization. Computer network protocols.
This thesis considers the two special sensor networks for future sensor network design: mobile sensor networks and hybrid network of sensors and robots. To investigate two types of networks, we abstract two most important aspects that are ingrained...
Dartmouth Dissertations

Parallel out-of-core sorting: the third way.
Sorting (Electronic computers). Parallel processing (Electronic computers). Computer algorithms.
Sorting very large datasets is a key subroutine in almost any application that is built on top of a large database. Two ways to sort out-of-core data dominate the literature: merging-based algorithms and partitioning-based algorithms. Within these...
Dartmouth Dissertations

A novel high-cell-density recombinant protein production system based on Ralstonia eutropha.
Recombinant proteins -- Synthesis. Ralstonia. Alcaligenes eutrophus. Organophosphorus compounds -- Synthesis. Proteomics. Microbial biotechnology. Industrial microbiology. Recombinant Proteins -- Biosynthesis.
Recombinant protein production has traditionally relied on organisms with well developed molecular biological tools, such as E. coli. However, E. coli is not suited for large industrial scale production due to its propensity to produce organic...
Dartmouth Dissertations

New synthetic approaches to chlorins and bacteriochlorins.
Pyrroles -- Synthesis. Porphyrins -- Synthesis.
Naturally occurring macrocyclic tetrapyrroles of the chlorin and bacteriochlorin classes play important roles in essential biological processes, including photosynthesis and nitrogen cycling. The chromophores also show promise in various...
Dartmouth Dissertations

Synthesis and characterization of phosphido-coated gold nanoclusters and gold phosphido complexes.
Gold -- Analysis. Gold compounds. Metal complexes -- Synthesis. Phosphides. Ligands.
Chapter one: Gold(I) phosphido complexes: Synthesis, structure and reactivity . Deprotonation of the phosphine complexes Au(PHR 2 )Cl with aqueous ammonia gave the gold(I) phosphido complexes [Au(PR 2 )] n (PR 2 = PMes 2 ( 1 ), PCy 2 ( 2 ), P(t-Bu)...
Dartmouth Dissertations

Linking density-dependent survival and growth of juvenile Atlantic salmon to their predators and prey.
Atlantic salmon -- Growth. Atlantic salmon -- Effect of predation on -- Connecticut River Watershed. Atlantic salmon -- Mortality -- Connecticut River Watershed. Fish populations. Atlantic salmon -- Toxicology -- Connecticut River Watershed. Cottus...
Juvenile, stream-dwelling salmon are a model system for studies of density dependence. However, while salmon exhibit diverse mechanisms and patterns of density dependence, the factors that drive variation in density dependence are not clear. I used...
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

Investigating the scale-up of anaerobic soluble sugar fermentations for large-scale ethanol production.
Alcohol -- Synthesis -- Computer simulation. Corn -- Biotechnology. Fermentation -- Computer simulation. Alcohol as fuel. Computational fluid dynamics.
Renewable energy sources are becoming increasingly important as sustainable alternatives to fossil fuels. One of these renewable sources, cellulosic biomass, is a relatively inexpensive and abundant resource that can be converted into liquid fuels...
Dartmouth Dissertations

The scaling of forced reconnection in two and three dimensions.
Magnetic reconnection -- Mathematical models. Plasma (Ionized gases). Magnetohydrodynamics -- Mathematical models. Scaling laws (Statistical physics). Forcing (Model theory).
This thesis presents two-fluid simulations of forced magnetic reconnection with finite electron inertia in two and three dimensional periodic systems. Reconnection in the system is driven by a spatially localized forcing function, added to the ion...
Dartmouth Dissertations

SGA screen identifies a cytoplasmic role for Dbp5/Rat8 and a novel player in nuclear pore complex biogenesis.
Nuclear membranes. Membrane proteins. Genetic regulation.
The coordination and coupling of the several steps in mRNA biogenesis helps to ensure proper regulation of gene expression. The DEAD-box helicase Dbp5/Rat8 is an essential mRNA export factor that has also been implicated in other steps of mRNA...
Dartmouth Dissertations

Evaluating mobility predictors in wireless networks for improving handoff and opportunistic routing.
Wireless communication systems. Computer network protocols.
We evaluate mobility predictors in wireless networks. Handoff prediction in wireless networks has long been considered as a mechanism to improve the quality of service provided to mobile wireless users. Most prior studies, however, were based on...
Dartmouth Dissertations

Development of an apparatus for simultaneous trapping of ⁶Li-⁸⁷Rb Fermi-Bose mixtures.
Trapped ions -- Instruments. Magnetooptical devices -- Design and construction. Atoms -- Cooling. Lithium ions. Rubidium -- Isotopes.
Dartmouth Dissertations

Physiological and neural mechanisms of anxiety, negativity, and threat.
Anxiety -- Physiological aspects. Threat (Psychology) -- Physiological aspects. Amygdaloid body -- Psychophysiology. Brain -- Psychophysiology.
The objective of this thesis was to examine the neural and physiological substrates underlying the processing of aversive information, and how individual differences in anxiety influence these responses. In a series of experiments, we utilized skin...
Dartmouth Dissertations

Carmichael's conjecture and the unit group function.
Number theory. Numbers.
The Euler '-function and Carmichael -function are extremely important in modern number theory, and much work has been devoted to studying the distribution and arithmetic properties of the values of each function. One interesting unresolved question...
Dartmouth Dissertations

Optimizing winding designs for high-frequency magnetic components.
Electric generators -- Windings. Electric inductors -- Design and construction -- Mathematical models. Electric current converters -- Design and construction -- Mathematical models. Energy dissipation -- Mathematical models.
Magnetic components for high-frequency power conversion applications can have significant losses that compromise the performance of the converter. In particular, winding losses can be large due to high-frequency effects that are difficult to model...
Dartmouth Dissertations

Effects of chronic anabolic androgenic steroid exposure on GABAergic neurotransmission and neuronal activity in the mamalian forebrain.
GABA -- Receptors. Anabolic steroids -- Physiological effect. Androgens -- Physiological effect. Prosencephalon. Neurotransmitters -- Effect of drugs on. Psychoneuroendocrinology.
Anabolic androgenic steroids (AAS) are derivatives of testosterone originally designed for therapeutic applications to enhance anabolic potency (protein synthesis and muscle growth) while exerting low androgenic (masculinizing) effects. The...
Dartmouth Dissertations

Bottom-up effects of nutrient enrichment on plants, pollinators, and their interactions.
Meadow ecology -- Colorado. Angiosperms -- Nutrition. Angiosperms -- Pollination. Plants -- Effect of nitrogen on. Insect pollinators -- Ecology -- Colorado. Mountain plants -- Ecology -- Colorado. Bees -- Ecology -- Colorado. Bees -- Nutrition --...
Nutrients play fundamental roles in biological systems, affecting plant growth and quality, community structure, and species interactions. Although the effects of nutrients on primary and secondary production have been well documented, their...
Dartmouth Dissertations

Kinematics and space densities for the local cataclysmic variable population.
Cataclysmic variable stars. Kinematics.
I investigate the kinematics and space densities of the local cataclysmic variable (CV) population. CVs are close binary star systems composed of a white dwarf that accretes matter from a less compact companion star in Roche lobe overflow....
Dartmouth Dissertations

Mutations that compromise cohesion predispose chiasmate and achiasmate chromosomes to age-dependent nondisjunction in Drosophila oocytes.
Chromosome abnormalities. Ovum. Maternal age. Aneuploidy. Aging -- Genetic aspects. Drosophila -- Molecular genetics. Nondisjunction.
Aneuploidy is the leading cause of pregnancy loss and birth defects in humans. At least 5% of all recognized pregnancies are aneuploid. Maternal meiosis is especially error-prone and the rate of chromosome missegregation increases exponentially...
Dartmouth Dissertations

Fast Fourier transforms for inverse semigroups.
Fourier transformations. Inverse semigroups.
In this thesis we develop a theory of Fourier analysis and fast Fourier transforms (FFTs) for finite inverse semigroups. Our results generalize results in the theory of Fourier analysis for finite groups. There is a general method for generating...
Dartmouth Dissertations

I. Reactivity of electron deficient indoles toward nucleophiles, Diels-Alder reactions and dipolar cycloadditions; II. Synthesis of pyrrolo[3,4-b]indoles.
Indole -- Synthesis. Indole -- Reactivity. Pyrroles. Diels-Alder reaction.
Earlier in our laboratory, a facile synthesis of the 2- and 3-nitroindoles was realized. These compounds showed promise as powerful intermediates in the synthesis of novel structures and natural products. The reactivity of 2- and 3-nitroindoles...
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

Microfabrication of magnetic components for high frequency DC-DC power conversion at high currents and low voltages.
DC-to-DC converters -- Design and construction. Electric inductors -- Design and construction. Thin film devices -- Design and construction. Microprocessors -- Power supply. Microfabrication. Transients (Dynamics).
Dartmouth Dissertations

Effects of particles on anelasticity, creep and microstructural evolution of granular ice.
Ice mechanics. Internal friction. Ice -- Creep. Particles. Dislocations in crystals.
This work studied the effects of silt-sized particles on the mechanical properties and microstructures of laboratory-grown granular ice from -20¬∞C to -2¬∞C. Experimental findings show that such particles significantly affect the...
Dartmouth Dissertations

Versatile 2-lithioindoles, syntheses and Diels-Alder reactions of pyrrolo[3,4-b]indoles.
Indole alkaloids -- Synthesis. Diels-Alder reaction.
An efficient synthetic approach to both 2-acyl-1-(substituted)indoles and 2-nitro-1-(substituted)indoles by reaction of 2-lithio-1-(substituted)indoles with appropriate electrophiles is presented. Inverse quenching of 2-lithioindoles 5 and 208 with...
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

Design, fabrication, control, and programming of MEMS micro-robots.
Microelectromechanical systems. Robotics.
This thesis presents technologies for the design, fabrication, operation, and control of electrostatic MEMS micro-robots. It describes prototype micro-robots, with dimensions of 60 μm by 250 μm by 10 μm, that are capable of controllable...
Dartmouth Dissertations

Stereopsis-guided brain shift compensation.
Three-dimensional imaging in medicine -- Mathematical models. Intraoperative monitoring. Cerebral cortex -- Imaging. Computer vision. Space perception.
Brain deformation models have proven to be a powerful tool in compensating for soft tissue deformation during image-guided neurosurgery. The accuracy of these models can be improved by incorporating intraoperative measurements of brain motion. We...
Dartmouth Dissertations

MRI-coupled broadband near-infrared tomography for small animal brain studies.
Brain -- Tomography. Magnetic resonance imaging -- Brain. Near infrared spectroscopy. Image processing -- Digital techniques.
Diffuse optical tomography (DOT) using near infrared (NIR) light has become a promising modality because it has the capability to non-invasively quantify oxygen saturation and hemoglobin content with potentially high temporal resolution and...
Dartmouth Dissertations

Investigation, optimization and synthesis of dihydrodipyrrins, linear tetrapyrroles and the resulting chlorins.
Porphyrins -- Synthesis. Tetrapyrroles -- Synthesis.
The synthesis of macrocyclic tetrapyrroles continues to be an area of vigorous research due to their application to a wide range of fields spanning the physical sciences. Only recently have general syntheses for the reduced systems, such as...
Dartmouth Dissertations

Memory and the resting brain.
Memory -- Physiological aspects. Hippocampus (Brain) -- Physiology. Perceptual-motor processes. Brain -- Variation.
Dartmouth Dissertations

Biochemical characterization of prion conversion.
Prion diseases. Prions. Proteolytic enzymes -- Pathophysiology. Proteins -- Conformation.
Prion diseases are infectious neurodegenerative disorders characterized by a conformational change of the host-encoded prion protein. The normal nonpathogenic isoform of the prion protein (PrPc) is primarily composed of α-helices and very low...
Dartmouth Dissertations

Heterogeneous dissolution fundamentals in water only pretreatment of biomass.
Biomass conversion. Hemicellulose -- Biodegradation. Hydrolysis. Sugar -- Solubility. Xylans -- Solubility.
This thesis characterized the solubilities of sugar monomers and xylooligomers in water and explored the potential role of solubility for pretreatment of cellulosic Biomass by hemicellulose hydrolysis in only water. A novel apparatus was developed...
Dartmouth Dissertations

Determinants of reproductive success in a neotropical migratory songbird: timing, site-selection and mating strategies.
Ovenbird -- Fertility. Ovenbird -- Reproduction. Ovenbird -- Behavior. Ovenbird -- Ecology. Ovenbird -- Nests. Ovenbird -- Maryland -- Anne Arundel County. Courtship in animals -- Maryland -- Anne Arundel County. Brown-headed cowbird -- Maryland --...
Identifying and understanding sources of individual variation in fecundity is of central importance to life history theory and population ecology. In this study, I first examined how factors on the breeding grounds in eastern Maryland affected the...
Dartmouth Dissertations

Regulation of matrix metalloproteinase gene expression by a synthetic rexinoid.
Metalloproteinases -- Inhibitors -- Mechanism of action. Collagenases -- Inhibitors -- Mechanism of action. Receptor-ligand complexes. Extracellular matrix proteins. Matrix Metalloproteinases.
The irreversible destruction of the tissues that comprise synovial joints is the hallmark of both rheumatoid arthritis and osteoarthritis. In both diseases, inflammatory cytokines, such as interleukin-1β, stimulate the production of matrix...
Dartmouth Dissertations

Within and between hand acquisition of multiple stimulus-response mappings.
Hand -- Psychophysiology. Conditioned response. Hand -- Movements. Perceptual-motor processes.
The present studies examine the flexible application of two stimulus-response (SR) mappings to a single set of stimuli. The following questions are addressed: (1) Can dual mapping performance equal single mapping performance (2) Can rapid map...
Dartmouth Dissertations

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