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Synthetic studies of Munchnone reactivity and applications and the total synthesis of cyclopenta[B]indole natural products / by Justin M. Lopchuk.
Chapter 1: Munchnones and mesoionic heterocycles The reactivity, regioselectivity, and synthetic applications of munchnones (1,3-oxazolium-5-olates) is a common theme which runs through Chapters 2-5. The definition, structure, and reactivity of...
Dartmouth Dissertations

Rejuvenation of cohesion during meiotic prophase is required for maintenance of chiasmata and accurate chromosome segregation / by Katherine Adalia Weng.
Accurate chromosome segregation in human oocytes requires that meiotic sister chromatid cohesion remain intact for decades and work in model organisms indicates that deterioration of meiotic cohesion over time may be a major determinant of...
Dartmouth Dissertations

On the implementation of ALGOL 68.
ALGOL (Computer program language);Computer programming.
Dartmouth Dissertations

Opinion dynamics in social networks / by Qi Gu.
Opinion dynamics is a complex procedure that entails a cognitive process when it deals with how a person integrates influential opinions to form revised opinion. Early research on opinion formation and social influence can be traced back to the...
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

An electron paramagnetic resonance spectroscopic investigation of group 6 (Cr, Mo and W) transition metal complexes.
Transition metal complexes. Electron paramagnetic resonance spectroscopy.
Dartmouth Dissertations

Regulation of B lymphocyte proliferation and differentiation through CD40.
B cells. CD antigens. Immune response -- Regulation.
Dartmouth Dissertations

A frequency analysis of the tidal volume controller in CO2 regulation in decerebrate cats with peripheral denervations.
Respiration. Carbon dioxide in the body.
Dartmouth Dissertations

Ecdysterone induced genetic reprogramming of cultured Drosophila cell lines.
Ecdysterone. Genetic regulation. Drosophila.
Dartmouth Dissertations

Investigation of the reactivity of nitrogen substituted oxyallyl cations.
Nitrogen compounds. Allyl compounds.
Dartmouth Dissertations

Solution chemistry of a New Hampshire subalpine ecosystem.
Forest ecology -- New Hampshire. Solution (Chemistry).
Dartmouth Dissertations

Thermally induced quasiparticle branch imbalance in thin film superconductors.
Superconductors -- Thermal properties. Quasiparticles (Physics).
Dartmouth Dissertations

On-line metasearch, pooling and system evaluation.
Information retrieval -- Mathematical models. ; Electronic information resource searching. ; Computer algorithms. ; Decision making -- Data processing. ; Mathematical optimization.
This thesis presents a unified method for simultaneous solution of three problems in Information Retrieval--metasearch (the fusion of ranked lists returned by retrieval systems to elicit improved performance), efficient system evaluation (the...
Dartmouth Dissertations

Experiment planning for protein structure elucidation and site-directed protein recombination.
Proteins -- Structure -- Computer simulation -- Experiments. ; Amino acid sequence -- Data processing -- Experiments. Protein engineering -- Experiments. ; Recombinant proteins -- Mathematical models.
In order to most effectively investigate protein structure and improve protein function, it is necessary to carefully plan appropriate experiments. The combinatorial number of possible experiment plans demands effective criteria and efficient...
Dartmouth Dissertations

Diaphragmatic electromyogram and airflow responses to imperceptible mechanical loads in conscious humans
Respiration -- Regulation. ; Pressure breathing.
Dartmouth Dissertations

Investigation of the reactivity of vinylimidazoles.
Imidazoles. ; Heterocyclic compounds -- Synthesis.
Dartmouth Dissertations

I. Synthesis and cycloaddition reactions of 4H-furo(3,4-b)indoles; II. Novel regioselective fluorobenzyne cycloadditions to furans.
Alkaloids -- Synthesis. ; Carbazole. Furans. ; Condensation.
Dartmouth Dissertations

Neuronal interferon signaling : implications for HSV-1 replication and pathogenesis / by Pamela Rosato
Herpes simplex virus-1 (HSV-1) establishes lifelong latent infections in the sensory neurons of the trigeminal ganglia (TG) wherein it retains the capacity to reactivate. The interferon (IFN)-driven antiviral response is critical for the control of...
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

The impact of weakly coupled fields on the accelerated expansion and its observables / by Jannis Bielefeld
The accelerated expansion of space in the Universe has been known for two decades. However, finding a plausible theory that describes this expansion is more difficult: Taking general relativity for granted requires us to stipulate the existence of...
Dartmouth Dissertations

Sounding-rocket studies of Langmuir-wave microphysics in the auroral ionosphere / by Micah P. Dombrowski
Since their discovery in laboratory plasmas in the 1920s, Langmuir waves have been observed to be ubiquitous in plasma environments, particularly in space plasmas. From the greater solar wind to planetary foreshocks and the auroral ionosphere,...
Dartmouth Dissertations

Improving MHC-peptide binding prediction from sparse data with a multi-allele graphical model and active learning / by Li Jiang
The recognition of foreign peptides by MHC (Major Histocompatibility Complex) proteins is a critical step in the immune response mounted by higher vertebrates against pathogens. MHC proteins have many allelic variants, each recognizing different...
Dartmouth Dissertations

Development of new methods for the synthesis of indolines and quinolizidines / by Hui Li
I. (3 + 2) Cycloaddition Reactions of Oxyallyl Cationic Intermediates with Indoles Cyclopenta- and cyclohexa[b]indolines are ubiquitous molecular skeletons in natural products and pharmaceutical agents. We have developed (3 + 2) cycloaddition...
Dartmouth Dissertations

Implications of motion planning : optimality and K-survivability / by Yu-Han Lyu
We study motion planning problems, finding trajectories that connect two configurations of a system, from two different perspectives: optimality and survivability. For the problem of finding optimal trajectories, we provide a model in which the...
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

Discovering MII1 regulated pathways in hematopoietic stem cells.
Hematopoietic stem cells. ; Hematopoietic stem cell disorders -- Genetic aspects. ; Genetic transcription -- Regulation. ; Leukemia -- Genetic aspects. ; Cell proliferation. ; Myeloid-Lymphoid Leukemia Protein -- genetics.
Hematopoietic stem cells (HSCs) balance self-renewal with the continuous production of the suitable numbers of lineage-restricted progenitor cells. In this work we demonstrate that the Mixed lineage leukemia 1 (Mll1) gene is essential for this...
Dartmouth Dissertations

Synthesis, characterization, and reactions of octafluorobicyclo[2.2.0]hex-1(4)-ene.
Fluorine compounds -- Synthesis. ; Hexafluorobenzene.
Dartmouth Dissertations

Preparation and reactivity of perfluorobenzyl complexes of the group 9 metals (Co, Rh, Ir).
Organometallic compounds. ; Organofluorine compounds. ; Organic compounds -- Synthesis. ; Transition metals. ; Cobalt compounds -- Synthesis. ; Rhodium compounds -- Synthesis. ; Organoiridium compounds -- Synthesis.
Dartmouth Dissertations

Wave phenomena in the magnetosphere: auroral electromagnetic ion cyclotron waves and quasi-thermal electrostatic fluctuations.
Cyclotron waves. ; Plasma waves.
Dartmouth Dissertations

Sounding rocket based investigations of HF waves in the auroral ionosphere.
Ionospheric radio wave propagation -- Observations. ; Auroras -- Alaska -- Observations. ; Sounding rockets -- Observations.
Dartmouth Dissertations

Palladium-catalyzed asymmetric phosphination: stereochemical and mechanistic studies.
Asymmetric synthesis. ; Palladium catalysts. ; Phosphine. ; Organophosphorus compounds -- Synthesis. ; Stereochemistry.
Chapter one: Synthesis, resolution and application of P-chirogenic phosphines. This chapter serves as a general introduction, and gives a brief overview of the synthesis, resolution and applications of chiral organophosphorus compounds. In...
Dartmouth Dissertations

Topographic correction of satellite images: theory and application.
Earth sciences -- Remote sensing -- Data processing. ; Remote sensing -- Mathematical models. ; Forests and forestry -- Remote sensing. ; Spectral reflectance. ; Landsat satellites. ; Remote-sensing images -- New Hampshire -- Coos County.
Steep terrain produces a topographic effect in digital satellite data that can make it difficult to distinguish changes in vegetation species or health from changes in illumination geometry. A multiple linear regression analysis of direct solar...
Dartmouth Dissertations

Investigation into the syntheses and reactions of 2-nitroindoles and 3-nitroindoles and discovery of novel syntheses of the pyrrolo[3,4-b]indole and pyrrolo[2,3-b]indole ring systems.
Carbazole -- Synthesis. ; Indole. ; Pyrroles.
A new synthetic approach to both pyrrolo[2,3- b]indoles and pyrrolo[3,4- b]indoles by the reaction of 3-nitro-1-(substituted)indoles with functionalized isocyanides is presented. The reaction between 3-nitro-1-(phenylsulfonyl)indole (185) and ethyl...
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

Model systems for the study of carbocation-π interaction.
Carbocations -- Reactivity. ; Aromatic compounds -- Reactivity.
Interaction with aromatic π systems has become recognized as an important mode of stabilization of carbocation intermediates in biological reactions. To gain insight into such carbocation-π interactions, we have undertaken a study of...
Dartmouth Dissertations

Sounding rocket investigations of whistler, upper hybrid and Langmuir waves in the auroral ionosphere.
Auroras -- Alaska -- Observations. Ionospheric radio wave propagation -- Observations. Sounding rockets. Electromagnetic waves -- Observations. Whistlers (Radio meteorology) -- Alaska -- Observations.
In this thesis data from four sounding rocket experiments (PHAZE II, SIERRA, RACE and HIBAR) are used to explore the high and medium frequency waves seen in the auroral ionosphere. All rockets were launched into active aurora and carried both...
Dartmouth Dissertations

Room-temperature mechanical properties of FeAl and NiAl.
Iron-aluminum alloys -- Mechanical properties. ; Nickel-aluminum alloys -- Mechanical properties.
Dartmouth Dissertations

Modular optimization of chemical processes.
Chemical models.
Dartmouth Dissertations

Glucocorticoids affect the action of gamma interferon on human monocytes.
Glucocorticoids. ; Interferon. ; Monocytes. ; Immunity.
Dartmouth Dissertations

Inertial coupling of spherical particles dispersed in two-phase potential flow.
Two-phase flow. ; Couplings.
Dartmouth Dissertations

Atmospheric influences on the biogeochemistry of high-elevation forests.
Acid deposition -- Environmental aspects -- New York (State) -- Adirondack Mountains. ; Acid deposition -- Environmental aspects -- Vermont -- Green Mountains. ; Forest ecology -- New York (State) -- Adirondack Mountains. ; Forest ecology --...
Dartmouth Dissertations

Halogenated oxabicyclo[3.2.1]octenes as building blocks for the synthesis of natural products.
Bicyclic compounds -- Reactivity. ; Natural products -- Synthesis. ; Halogens. ; Diels-Alder reaction.
The previously synthesized 3,4-dibromo-8-oxabicyclo[3.2.1]octa-3,6-dien-2-one has been shown to be a very versatile building block for the synthesis of complex natural product structures. This key building block has been made in both...
Dartmouth Dissertations

Geology of the Lake Atitlan area, Guatemala : a study of subduction zone volcanism and caldera formation.
Geology -- Guatemala -- Lake Atitlan area; Volcanism -- Guatemala -- Lake Atitlan area; Calderas -- Guatemala -- Lake Atitlan area.
Geological mapping, petrological and geophysical studies in the lake Atitlan area, Guatemala, have revealed four distinct periods of stratovolcano growth, each followed by major silicic eruptions and caldera collapse. The first period (12 - 11 my...
Dartmouth Dissertations

Synthetic studies toward the furanosteroids.
Furans -- Synthesis. Steroid drugs. Enzyme inhibitors -- Therapeutic use. Cancer cells -- Growth -- Regulation.
The furanosteroids are an important class of natural products that have been found to effectively inhibit various biologically important enzymes. These enzymes include the phosphoinositide-3-kinase (PI3K) family and the polo-like kinase (PLK1)...
Dartmouth Dissertations

The overtone spectroscopy and dynamics of acetylene.
Acetylene -- Spectra. ; Vibrational spectra.
Dartmouth Dissertations

Synthetic approaches to the azamacrolides [Part] I; Synthetic approaches to carbazoles and 2-acylindoles [Part] II.
Alkaloids -- Synthesis. ; Allomones. ; Indole. ; Carbazone. ; Diels-Alder reaction.
A novel synthetic route to the synthesis of 9-propyl-10-azacyclododecan-12-olide (1), a natural allomone isolated from the Mexican bean beetle pupa, is presented. The salient features of this synthetic route are a regioselective Beckmann...
Dartmouth Dissertations

Substrate and catalyst control in asymmetric synthesis of p-sterogenic bis(phosphines).
Introduction. This chapter provides a brief overview of the thesis. Chapter 1: tert-butyl-diphosphabutarene - Synthesis and reactivity of a novel phosphacycle. Treatment of 1,2-bis(dichlorophosphino)benzene (12) with tert-butylmagesium chloride...
Dartmouth Dissertations

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