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 518 for “"Tubular"”.
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Bulge forming of tubular components.
The bulge forming process is a method for shaping tubular components using an internal hydrostatic pressure combined with a compressive axial load. Initial investigations involved carrying out an extensive literature survey to determine the components which could be formed and the effects of using …
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Three dimensional weaving of tubular structures
… of weaving living tissue into three dimensional tubular structures. This prototyped machine is not ready for patient use; however, the machine does prove the feasibility of this weaving technique. This report also includes the design of actuators that would make the prototyped machine completed …
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The hydraulic bulge forming of tubular components.
The bulge forming process is a method for shaping tubular components using an internal hydrostatic pressure combined with an axial compressive force. Initial investigations involved carrying out an extensive literature survey to determine the components which could be formed and the types of …
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Hot embossing of polymeric tubular micro-components
Technical and market demands of tubular micro-components have led to the development of a hot embossing process and corresponding machine for shaping polymeric micro-tubes. The targeted tubular micro-components are of an initial outer diameter of 1.6mm or below, and have reduced inner feature in …
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Strength of Eccentrically Loaded Rectangular Tubular Columns
Made available in DSpace on 2014-12-08T23:56:15Z (GMT). No. of bitstreams: 1 6500909.pdf: 4251645 bytes, checksum: 9e5b782a23c76efc43168c9eb9a3f7f1 (MD5) Previous issue date: 1964
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Nonlinear finite element analysis of tubular joints
… important aspects of nonlinear behavior of tubular joints are numerically investigated with a finite element procedure including geometric and material nonlinearities. The numerical results give a clear and convincing physical interpretation of the effects of external loads on the ultimate …
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BIOENGINEERING CHITOSAN-BASED TUBULAR NEURO-MUSCULAR GASTROINTESTINAL TISSUE
… gastrointestinal (GI) tract is a hollow muscular tubular organ that extends from the mouth down to the rectum. Different high pressure zones exist along the tract and are referred to as sphincters. Sphincters maintain a closure tone and relax upon receiving the appropriate signal to allow movement …
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Heat transfer coefficients of particulate in tubular heat exchangers
… the heat transfer from heated bare and finned tubular surfaces to particulates in packed bed cross flow. The results from this experiment will be used to help select the type of particulates that will be used. Additionally, these results will assist in estimating heat transfer in prototype and …
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Operation of a Tubular Anaerobic Digested on Piggery Waste
Three inclined tubular digesters of 13-15.3L volume were operated successfully at 20-35 C with hydraulic retention times (HRT) of 10-50 days on pig slurry of 10,,5,.2.5 and 1% Total Solids content. Tube inclination of 16-20 overcame the scumming problems encountered with horizontal tubular …
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Analytical separations using packed and open-tubular capillary electrochromatography
… this dissertation is to develop packed and open-tubular capillary electrochromatographic methods for improved achiral and chiral separations of various classes of analytes. The first part of this research involves the separation of seven benzodiazepines by the use of the packed mode of capillary …
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Structural Optimization of Thin Walled Tubular Structure for Crashworthiness
… to design dynamically crushed thin-walled tubular structures for crashworthiness applications. Due to their low cost, high energy absorption efficiency, and capacity to withstand long strokes, thin-walled tubular structures are extensively used in the automotive industry. Tubular structures …
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3D Reconstruction of Tubular Structures Using MRI Projection Images
… simple magnetic resonance technique for imaging tubular structures, such as blood vessels and catheters, and 3D reconstruction of these structures. This study includes three major chapters: one on simulation and two on experiments with MRI projection images. First, a MATLAB simulation was created …
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Studies of immunoglobulin receptors and human proximal tubular cells
… the hypothesis that an interaction between tubular cells and filtered Ig/immuno complex (Ig/IC) may involve specific cellular receptors, and thus provide a novel mechanism for the initiation of tubular injury and fibrosis. Deposition of Ig and IC is seen in renal diseases such as membranous …
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Cycling studies of micro-tubular solid oxide fuel cells
… these mechanisms of cyclic degradation for micro-tubular SOFC, then to set-up experiments to measure the degradation in terms of the drop in electrochemical performance and subsequently confirming the theories by dilatometry and scanning electron microscopy (SEM). In conclusion, the methods and …
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Fabrication and characterization of micro-tubular solid oxide fuel cells
… potential to revolutionize energy generation. Tubular and planar concepts are the most common SOFC systems. The primary objective of this study was to develop a cost-effective process for fabricating micro-tubular SOFCs and to investigate how to improve fuel cell performance. Two technical …
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