Investigations into alternative breast cancer (BC) imaging techniques have become increasingly popular based on the limitations of traditional imaging modalities: X-ray mammography uses ionizing radiation, has limited intrinsic contrast and is...
Nurses -- Health and hygiene. Employee health promotion.
Background. Worksite health promotion programs (HPP) support employees' health behaviors to prevent downstream diseases. Maximizing participation can optimize program impact. Objectives. To assess staff nurses' participation in three HPP - flu...
Breast -- Cancer -- Tomography. ; Breast -- Cancer -- Imaging. ; Breast -- Cancer -- Diagnosis. ; Near infrared reflectance spectroscopy. ; Image processing -- Digital techniques.
Near-infrared (NIR) light has the potential to be used as a non-invasive means of diagnostic imaging within the human breast. Due to the diffusive nature of light in tissue, computational model-based methods are required for functional imaging...
In this thesis, the dynamics of long-lived, time-dependent, coherent field configurations, known as oscillons, are investigated in the presence of an expanding background. In a (1+1)-dimensional expanding spacetime, scalar-field oscillon lifetimes...
Mitomycin C -- Mechanism of action. ; Xeroderma pigmentosum. ; DNA -- Effect of mitomycin C on. ; DNA-protein interactions -- Effect of mitomycin C on. ; DNA repair. ; Arsenic -- Physiological effect. ; Cadmium -- Physiological effect.
Despite the fact that numerous chemically and structurally diverse DNA lesions are repaired by nucleotide excision repair (NER), the mechanism of the interaction of XPA with damaged DNA is not well characterized. The overall goal of this study was...
For a long-lived metastable system, the decay of the survival probability is typically exponential. However, deviations are known to exist at short times (the quantum Zeno effect) and at long times (algebraic tails in classical hydrodynamic...
A variety of forensic methods have been developed to identify falsified photos, each unified by the ability to estimate and detect properties of a photo that are perturbed by forgery. There exist, however, many photos in which the required...
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...
Near infrared reflectance spectroscopy. Breast -- Cancer -- Tomography. Breast -- Cancer -- Imaging. Breast -- Cancer -- Diagnosis. Image reconstruction. Diagnostic imaging. Image Processing
The integration of visual and auditory events is thought to require a joint representation of visual and auditory space in a common reference frame. We investigated the coding of visual and auditory space in the lateral and medial intraparietal...
Novel biotherapeutics have reshaped drug discovery and promise a continued revolution in disease therapy, yet therapeutic proteins present unique design challenges. One distinguishing risk factor is the prospect of eliciting an adaptive immune...
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...
T cells. T cells -- Receptors. CD antigens. CD4 antigen. Immunologic memory. Herpesvirus diseases -- Immunological aspects. Vaccinia. CD8-Positive T-Lymphocytes -- immunology. CD4-Positive T-Lymphocytes -- immunology. Herpesviridae Infections --...
The phenomenon of immunological memory has been known for thousands of years. This knowledge has been applied to vaccination, which has resulted in a dramatic reduction in the number of deaths due to infectious diseases. Immunological memory is...
Relativity (Physics). ; Anisotropy -- Mathematical models. ; Einstein field equations. ; Newtonian fluids. ; Astrophysics.
We study the effects of anisotropic pressure on the properties of spherically symmetric, gravitationally bound spheres. We consider the full general-relativistic and Newtonian treatment of this problem and obtain exact solutions for various forms...
In the late 1960s, Ihara began work that led to the Ihara zeta function, a zeta function which is defined on a finite graph. This function is an interesting graph invariant which gives information on expansion properties of the graph. It also...
Partially ordered sets and permutations are combinatorial structures having vast applications in theoretical computer science. In this thesis, we study various computational and algorithmic problems related to these structures. The first chapter of...
A polynomial is a product of distinct cyclotomic polynomials if and only if it is a divisor over [Special characters omitted.] [x ] of xn - 1 for some positive integer n. In this thesis, we will examine two natural questions concerning the divisors...
The use of non-selective vasodilators for the purpose of pulmonary vasodilation has, to date, given mixed results; systemic hypotension has been the limiting factor. Lipid soluble gases (e.g. volatile anesthetics) are capable of inducing smooth...
Cosmic acceleration could be an effect of a ""dark energy"" fluid pervading the Universe. It could also be an indication that general relativity is not the correct theory of gravity at cosmological length scales. Unfortunately, observations of the...
This dissertation details the use of a new catalog of Galactic bulge field RR Lyrae variables to advance the understanding of the structure of the Milky Way Galaxy. The catalog contains 3667 RR0 Lyrae stars from the eight-year MACHO Project...
Quantum dots. Heterostructures. Metal oxide semiconductors -- Design and construction. Silicon oxide. Electron gas. Ohmic contacts. Microelectronics -- Technological innovations.
Solid-state approaches to quantum computing include quantum dot qubit implementations based on the Loss-DiVincenzo proposal. Prior work in GaAs two-dimensional electron gas (2DEG) materials serves as a proving ground for device designs that can be...
During postembryonic development of C. elegans the heterochronic gene lin-14 controls the timing of developmental events in diverse cell types. Three alternative lin-14 transcripts are predicted to encode isoforms of a novel nuclear protein that...
Functional neuroimaging has confirmed a high degree of localization of function in the cerebral cortex of man. In contrast, microstructural analysis has contributed very little to the topographical characterization of cortical areas. In this work I...
Oligomers -- Structure -- Mathematical models. Nuclear magnetic resonance spectroscopy.
Medical Term: Nuclear Magnetic Resonance, Biomolecular.
Protein complexes play vital roles in the fundamental processes of life. In particular, homo-oligomers are involved in cell signaling, regulation, and transport. To make detailed studies of these symmetric proteins, they need to be discovered, and...
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,...
A hallmark of apoptosis is internucleosomal DNA fragmentation catalyzed by an endogenous endonuclease. Many laboratories have implicated the activation of Ca2+/Mg2+-dependent endonucleases or the acid-dependent deoxyribonucleases, (DNase II),...
Access control is a core component of any information-security strategy. Researchers have spent tremendous energy over the past forty years defining abstract access-control models and proving various properties about them. However, surprisingly...
Human epidemiological and animal studies have associated inhalation of nickel dusts with increased incidence of pulmonary fibrosis. The current studies examined the hypothesis that nickel promotes pulmonary fibrosis by inhibiting fibrinolysis and...