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 249 for “"Lamina"”.
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Fundamental Components for Lamina Emergent Mechanisms
This thesis introduces lamina emergent mechanisms (LEMs) and presents components that can be used as building blocks to create LEMs capable of more complex motion. As the name suggests, lamina emergent mechanisms are fabricated out of planar materials (the lamina) but their motion is out of that …
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Der subfrontale trans-lamina terminalis-Zugang zum III.Ventrikel
… Evaluierung des subfrontalen trans-lamina terminalis-Zugangs 42 humane Gehirne morphometrisch untersucht. Als valide Landmarke wurde der Sulcus frontomarginalis gefunden. Das olfaktorische System gliedert sich in eine "pars libera" und "pars tecta" n. olfactorii, hervorgerufen durch …
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High Shear Strain Characterization of Plain Weave Fiber Reinforced Lamina
… structural members. An optimal composite laminate for such members is described to include discrete elastic and viscoelastic plies. It has been identified that a pure shear stress state induced in the viscoelastic plies of typical cylindrical members (tape springs, slit tubes, etc.) when …
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Achieving Complex Motion with Fundamental Components for Lamina Emergent Mechanisms
… which can be made from sheets of material, or lamina emergent mechanisms (LEMs). This thesis presents principles which can be used for designing LEMs. Pop-up paper mechanisms use topologies similar to LEMs, so it is advantageous to study their kinematics. This thesis outlines the use of planar …
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Changes in the Oligodendrocyte Progenitor Cell Nuclear Lamina During Ageing
… was to explore a possible role of the nuclear lamina (a nucleoplasmic protein scaffold) in the functional response of OPCs to the mechanical properties of their microenvironment. Work in this thesis identified changes in the expression levels of the nuclear lamina proteins Lamin A/C and Lamin …
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Characterization of the vocal fold lamina propria towards voice restoration
… approach is one strategy for treating lamina propria scarring. To rationally design an implant material for this purpose, it is important to have a more complete understanding of lamina propria biochemistry and microstructure than is currently in literature. This dissertation presents …
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Compressive strength of lamina reinforced and fiber reinforced composite materials
… investigation on the compressive strength of lamina reinforced and fiber reinforced composite materials when loaded parallel to the reinforcement. An analytical model which replaces the fiber reinforced composite with a laminate containing initially curved laminae has been proposed. By …
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Lamina assoziierte Polypeptide 2, Lamin-B-Rezeptor und Lamine : Untersuchungen an Vertebratenmodellen
… Teilprojekten Untersuchungen an integralen (Lamina assoziiertes Polypeptid 2, Lamin B Rezeptor) und peripheren Membranproteinen (Lamine) der in inneren Kernmembran durchgeführt. Eines der am besten untersuchten integralen Membranproteine der inneren Kernmembran ist das Lamina assoziierte …
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Lamina-associated polypeptide 2 (LAP2) expression patterns in transformed and cancer cells
The Lamina-associated polypeptide two (LAP2) proteins comprising three human isoforms, LAP2 +- LAP2β and LAP2 have been shown to provide a structural framework in the nucleus and to facilitate nuclear assembly and disassembly during the cell cycle. Expression profiling studies, using …
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Molekulare Charakterisierung, Expressionsmuster und Interaktionen der Lamina-assoziierten Polypeptide 2 (LAP2) in Xenopus laevis
Lamina-assoziierte Polypeptide 2 (LAP2) in Vertebraten sind bis auf zwei Ausnahmen integrale Membranproteine der inneren Kernmembran, die durch unterschiedliches Spleißen eines einzigen Gens entstehen. Während die aminoterminale Domäne, die allen LAP2 Isoformen gemeinsam ist, in Interphasezellen …
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Mechanistic and Epigenetic Partitioning of Lamina-Associated Chromatin Revealed by a Genome-Wide Imaging Screen
… as a site of heterochromatin organization, where lamina-associated domains (LADs) play a crucial role in transcriptional repression and genome stability. However, the molecular mechanisms that tether LADs in human cells remain poorly defined. To address this gap, I conducted the first genome-wide, …
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The Effect of Tooth Presence on Identification of Tooth Socket Lamina Dura Surface: A CBCT Study
… structure on the accuracy in identifying the lamina dura surface, facial bone surface, facial and lingual bone margins, socket apex, as well as in facial bone thickness measurement. Materials & Methods: Three fresh cadaver heads were scanned using a NewTom 5G CBCT at 0.100 mm voxel size at …
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Lamina Cribrosa and Optic Nerve Head Geometry as a Function of Myopia in Older Normal Eyes
… We examined whether differences exist in ONH and lamina cribrosa structure with myopia in older normal eyes. Methods: Spectral domain optical coherence tomography (SDOCT) scans centered on the ONH were acquired in one eye of 15 older normal subjects (mean = 58.1 ± 7.4 years) with high myopia …
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The Effect of Scan Settings on the Identification of Tooth Socket Lamina Dura Surface: A CBCT Study
… to accurately identify the tooth socket facial lamina dura, facial bone surface, facial bone margin, as well as the facial bone thickness measurement. Materials & Methods: CBCT scans (NewTom 5G) were performed on 2 fresh cadaver heads at 2 different time points, before (T1) and after (T2) tooth …
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A DEM for visualising damage evolution and predicting failure of composite lamina under uniaxial and biaxial loads
Fibre-reinforced composites have many outstanding advantages that attract commercial industries to use them such as, automotive industry, aerospace industry, marine industry, wind turbines, and sports goods. Fibre-reinforced composites characterised as a high strength/stiffness to weight ratio …
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Leaf Lamina Reduced Nitrogen Concentration and Nitrate Reductase Activity as Criteria for the Identification of Productive Maize Genotypes
Leaf lamina nitrate reductase activity (NRA), and total reduced nitrogen concentration (TRNC) in maize (Zea mays L.) were examined for relationships to grain yield, yield components, grain protein, maturity, and soil nitrogen fertility (N). Genotypes were classed as high and low for NRA (HNRA and …
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A micromechanics-based method for off-axis strength prediction of unidirectional laminae - Approach for a nonlinear rubber based lamina
… strength of unidirectional linear elastic laminae. These composites fail by matrix cracking along a plane parallel to the fiber direction. The stresses in the matrix are calculated using a local stress analysis based on a concentric cylinder model. This model consists of a unique fiber …
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