Global ETD Search
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 84 for “"Biological membranes"”.
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Passive transport through biological membranes
… into cells via cellular walls made of lipid membranes. Through the wall the cell needs to transport nutrients, waste, genetic information and signaling molecules. The cell achieves this task via passive and active transport. In this thesis we focus on passive transport processes. In Chapter 1 …
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Observing, Understanding, and Manipulating Biological Membranes
… a region that is hydrophilic. The lipid bilayer membranes of a cell act as a barrier that distinguishes the cells and the organelles interiors from the outside environment. In order for the cell to be able to effectively communicate across these impermeable barriers they have evolved many …
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Computational studies on biological membranes and viral capsids
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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Theoretical studies of lipid-protein interactions in biological membranes
Monte Carlo simulations are used to investigate the conformational and orierjtational properties of lipids and proteins in a bilayer membrane. in the first instance, linear, hard-core tri-atomics are used to represent the two-dimensional projections of the lipid molecules. Studies on lipid only …
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Nuclear Magnetic Resonance Studies of Model and Biological Membranes
… on bilayers. Proton MASS NMR spectra of the biological membranes, rod outer segments and purple membranes are reported along with the $\sp $C MASS NMR spectra of lung surfactant and myelin. We also have obtained $\sp2$H, $\sp $C, and $\sp $N NMR spectra of labelled amino acids incorporated …
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Pressure Effects on Liposomes, Biological Membranes and Membrane-Bound Proteins
The phosphatidylcholine vesicles were examined by steady state polarization fluorometry under pressure in the range of 1 bar to 2 Kbar. Isothermal pressure-induced phase transitions were observed in dipalmitoylphosphaditylcholine and dimyristoylphosphatidylcholine vesicles incorporated with …
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Interactions of environmentally-responsive nanoparticles with synthetic and biological membranes
… understanding of how NPs interact with the biological milieu has lagged far behind experiments. In particular, it is critical to gain physical insight into the behavior of NPs at cell surfaces in order to minimize cytotoxic side effects while maximizing NP efficacy. In this thesis, I use …
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Statistical Mechanics of Two-Dimensional Materials; From Biological Membranes to Graphene
… ranging from electronics, energy harvesting, biological systems among others. Due to the 2D nature of these materials, they are known for their unusual flexibility and the ability to sustain large curvature deformations. Further, they undergo noticeable thermal fluctuations at room …
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Modeling and characterizing heterogeneous biological membranes and their permeability to gas
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-12-01
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Molecular Dynamics Simulations for the Study of Biophysical Processes on Biological Membranes
… constitute the primary structural element of biological membranes, and as such, they play a central role in biochemical and biophysical processes at the cellular level, including cell protection, intercellular interactions, trans-membrane transport, cell morphology, and protein function, to …
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A Molecular Dynamics Study on the Interaction of Tea Catechins and Theaflavins with Biological Membranes
… in tea with lipid bilayers, as a model for cell membranes. Previously, multiple experimental studies rationalized the anticarcinogenic, antibacterial, and other beneficial effects of these compounds in terms of physicochemical molecular interactions with cell membranes. To contribute toward …
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An Analytical Approach to the Investigation of the Interaction of Toxic Trace Metal Species With Biological Membranes
Made available in DSpace on 2014-12-13T20:09:37Z (GMT). No. of bitstreams: 1 7606787.pdf: 8842004 bytes, checksum: 1c1125c88c2c05ab070ecd59d45b9b44 (MD5) Previous issue date: 1975
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A Deuterium Nuclear Magnetic Resonance Study of Protein Dynamics and Protein-Lipid Interactions in Model and Biological Membranes (Nmr)
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1984.
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Interactions of Inorganic Mercury and Inorganic Cadmium with Biomimetic and Complex Biological Membranes and their Influence on Membrane Packing and Size
… transition (Tm) of biomimetic and polar extract membranes was investigated using Laurdan Generalized Polarization (GP) and Dynamic Light Scattering (DLS). Hg2+ and Cd2+ electrostatically target and induce rigidity in membranes containing cationic and anionic lipids respectively. Hg2+ also imparts …
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Molecular Mechanisms of Gating, Selectivity, and Transport in Membrane Channels and Carriers
Exchange of materials and information across biological membranes is one of the most fundamental and highly regulated processes in the biology of all living organisms. As lipid bilayers present a significant barrier to the transport of most materials, specialized membrane channels and carriers have …
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Simulation of lipid membrane models at coarse-grained resolution Towards novel methodologies with improved capabilities
… computational methodologies for simulating biological membranes at coarse-grained (CG) resolution, combining well-established modeling strategies with recent advances in machine learning. It presents an optimized set of lipid representations and parameters for the Martini 3 CG force field …
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A synthetic lipid scramblase built from DNA
… have been developed to interact with biological membranes and serve as artificial counterparts of natural ion channels, or membrane bending, scaffolding, or fusion proteins. In this thesis, we design a synthetic DNA-built enzyme that facilitates rapid lipid mixing between the two …
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Tools for improving and understanding microbial performance in biorenewable applications
… To compete with the petroleum industry, the biological processes involved in biorenewable fuel and chemical production need to be efficient. Here we engineer microorganisms and their environment for improved performance in biorenewable applications. In Chapters 1-4, we focus on lignin …
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Materials in extreme conditions : experimental developments and studies of systems far from equilibrium
… systems (energetic materials, brittle solids and biological membranes), pushing them far from equilibrium, and studying their response. While the explosive 1,3,5-triaza-1,3,5-trinitrocyclohexane (RDX), has been used for almost a century, questions remain about its initiation, reactivity, and …
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