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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 42 for “"Biological and Chemical Physics"”.
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Sensitivity of Radical SAM Enzyme MftC to Molecular Oxygen
… the presence of cholesterol as a carbon source and for the sequestration of ethanol. MftC catalyzes the C – terminal decarboxylation of tyrosine and the subsequent cross-linking of tyrosine to the penultimate valine on the precursor peptide MftA. The product formed out of the reaction is …
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Pregnancy Induced Alterations of Reproductive Tract Collagen and Elastin in a Murine Model
<p>This thesis reports on structural and dynamical modifications of reproductive tract elastin and collagen as a function of parity. Pelvic floor dysfunction, including pelvic organ prolapse (POP) is a major concern affecting female health worldwide, leading to surgeries costing billions of dollars …
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Nonlinear Sliding Mode Observer Applied to Microalgae Growth
<p>Modeling biological processes, such as algae growth, is an area of ongoing research. The ability to understand the multitude of parameters that influence this system provides a platform for better understanding the dynamics of microalgae growth. Empirical modeling efforts look to understand …
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Learning from Disorder and Noise in Physical Biology
<p>Stochasticity, disorder, and noise play crucial roles in the functioning of many biological systems over many different length scales. On the molecular scale, most proteins are envisioned as pristinely folded structures, but intrinsically disordered proteins (IDPs) have no such folded state and …
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The Incorporation of Graphene to Lithium Cobalt Oxide as a Cathode to Improve the Performance of Lithium Ion Batteries
… LiBs showed distinct changes in their charging and discharging characteristics. The cell with its cathode incorporated with a 0.5 wt.% graphene powder exhibited the highest discharge capacity at currents 0.1 C and 0.5 C, The incorporation of 1 wt.% graphene powder contributed the most stable …
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Quantitative Aspects of Interface Remodeling During Germband Extension
… focused on properties of cell-cell interfaces, and led to a model in which actomyosin networks mediate higher line tensions at AP interfaces to direct contraction. However, the contribution of tricellular vertices to tissue elongation remains unclear. This study shows that cell intercalation …
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Magnetic Resonance Studies of Free Radicals Generation and their Impact in Different Polymers
<p>Studies of free radicals in the physics, chemistry, biology, and materials science have contributed to advancements in those fields. The presence of radicals can damage the material and system in some instances and, in some cases, they may enhance the property of the material as well. Knowledge …
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Interactive Wireless Sensor for Remote Trace Detection and Recognition of Hazardous Gases
… gases such as Hexane, Propane, Carbon monoxide and Hydrogen. These gases are highly toxic and used in different kinds of manufacturing industries, domestic purpose and so on. So, building a sensor that can detect this kind of gases can save the environment; prevent the potential for explosion, …
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Evaluation of Presage® As A 3D Dose Verification to ol In Proton Beams
<p>Radiotherapy techniques have advanced and radiation dose plans have become much more complex over the last decade. This is especially true in proton therapy, which involves extremely steep dose gradients as a result of positioning the Bragg peak to cover the volumes to be treated. The Bragg peak …
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Quantification of Dynamic Epithelial Sheet Architecture in Botryllus Schlosseri Using 2-D & 3-D Image Analysis
… to access experimentally, their architecture and dynamics are not well understood. Here we examine the dynamic remodeling of epithelial tubes in vivo using a novel and uniquely accessible model system: the extracorporeal vasculature of <em>Botryllus schlosseri</em> (sea squirt). In …
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Hobby Grade Lithium-Ion Batteries for Spacecraft Applications: Establishing an Automated Electrical Characteristics Testing Procedure For Flight Acceptance of non-Space-Grade Small Secondary Batteries
… level education due to the National Aeronautics and Space Administration’s implementation of the Cube Satellite Launch Initiative, making it easier and cheaper to conduct small, low orbit missions. Because these CubeSats are occupying the same space as a crewed spacecraft, it is imperative that …
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Direct Computations of Spatially Resolved Viscoelastic Moduli of Biomolecular Condensates
… Monte Carlo (MMC) simulations. By integrating random graph models and simulations of A1-LCD, a type of intrinsically disordered protein, we examine how network topology influences storage modulus, loss modulus, crossover frequency, and relaxation time spectra. Our results reveal a strong …
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Uncertainty In The Physical Basis of Estimates of Relative Biological Effectiveness In Carbon Radiotherapy
… close to critical structures, or resistant to standard radiotherapy. A unique benefit of this therapy is the relative biological effectiveness (RBE) of the beam (i.e., how biologically potent carbon ions are as compared to x-rays), which is significantly elevated. This RBE also varies as a …
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Taming Biological Complexity Through the Use of Symmetries
<p>The study of biological systems is, inherently, the study of very complex systems. This is essentially due to the fact that they are made up of numerous, often very complicated, interactions between an extensive number of components. Often necessitating an abundance of quantitative parameters …
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Simulated Associating Polymer Networks
… terminated by endgroups that have a different chemical composition than the polymer backbone. When dissolved in a solution, the endgroups cluster together to form aggregates. At low temperature, a strongly connected reversible network is formed and the system behaves like a gel. Telechelic …
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Modeling Disorder in Proteins Yields Insights into the Evolution of Stability and Function
… myriad functions within living organisms and most proteins require a folded structure in order to perform their function. The protein's structure is the direct link from sequence to function. This is known as the sequence - structure - function paradigm. However, this does not mean that …
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Novel Materials for Use in Homeland Security Research
<p>Organometallic pyridazines and compounds derived from them have been of interest in polymer research due to their atypical environmental stability (as compared to other non-aromatic organic semiconductors) as well as their conductivity. The off-metal synthesis and characterization of several …
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