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 51 for “"mechanical support"”.
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Optimization of Hybrid Hemodynamics from Mechanical Support Devices in Cardiogenic Shock
Cardiovascular mechanical circulatory support (MCS) offers the promise of forward blood flow maintenance and distal tissue perfusion without taxing the failing heart. However, there are no firm determinants of device initiation and titration, and demonstration of definitive clinical benefit remains …
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Leveraging Right and Left Ventricular Coupling for Optimization of Mechanical Circulatory Support
Mechanical circulatory support devices have the potential for profound impact on cardiogenic shock patients. They enable volume propulsion and pressure gradient generation first by unloading and later by decoupling native cardio-vascular interactions, which reduces cardiac load and energy …
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Methods to achieve wavelength selectivity in infrared microbolometers and reduced thermal mass microbolometers
… absorber, including the effects of a mechanical support dielectric layer is discussed. Also, modified dielectric coated Salisbury Screen can improve both the wavelength selectivity and the speed of thermal response for microbolometers. These patterned resistive sheets and Modified …
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Additive manufacturing of triply periodic minimal surface informed load bearing stiffness matched tibial bone scaffold
… create bone implants that effectively match the mechanical properties of the tibia. The primary goal is to design and fabricate titanium (Ti6Al4V) scaffolds that provide optimal load-bearing capacity while closely matching the stiffness of the host bone, thereby promoting better integration and …
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Characterisation of Ovine and Human Vertebral Endplates using X-ray Microtomography: the Effects of Degeneration on Structure.
… providing both a nutritional pathway and mechanical support to the disc, therefore making it prone to damage. However, the VEP is still poorly characterised. This thesis describes work undertaken to characterise the structure of normal and degenerative VEPs. Initially, ovine VEPs were used …
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Micromachined microwave filters
… inside the square coaxial transmission line is supported by stubs, which provide the mechanical support for the centre conductor for the coaxial transmission lines and filters. The coaxial structure is made by stacking thick planar layers of material to suit microfabrication, providing the means …
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Automated support for experimental approaches in daylighting performances assessment
… interest over the past two decades. A novel mechanical support has been constructed to help better understand this topic that consists of a five foot in diameter circular table driven to rotate and tilt by computer controlled motors. The first use of this machine is to conduct shadow studies …
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Truss core sandwich panels with compacted aerogel insulation
… aerogel granules, designed to provide both mechanical support and thermal insulation to facilitate the practical commercialization of aerogel insulation, particularly in energy efficient building applications. Mechanical and thermal properties of the sandwich panel prototype were measured …
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Mold, flow, and economic considerations in high temperature precision casting
… of this research will be a zirconia face coat supported in the flask by magnesium phosphate bonded silica. This will provide the required heat diffusivity and mechanical support at the lowest cost to minimize interdentric porosity.
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Thermal hydraulic design of a salt-cooled highly efficient environmentally friendly reactor
… and use wire wrap spacers and assembly ducts for mechanical support. Silicon carbide is used for cladding, and the fuel-clad gap is filled with a low-melting point liquid metal to act as a thermal bond between the fuel and the cladding. The core is encircled with two rows of reflector assemblies …
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Tibial Acceleration and Shock Attenuation in Female and Male Distance Runners at Different Levels of Body Weight Unloading
… by reducing effective body weight (BW) through mechanical support. The purpose of this thesis is to investigate if BW unloading affects tibial acceleration (TA) and shock attenuation. Twelve trained distance runners (Sex: 6 males and 6 females; Age: 18-30 years) were recruited for this study. TA …
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Treadmill Assisted Circumvention of Wearable Sensors-based Gait Authentication
… imitating sensor readings and providing external mechanical support. The specific machine that we used in the experiment was a digital treadmill, which provides a suitable platform for the human imitators to control, adjust and adapt several factors, such as speed, step-length, step-width, and …
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MICROFABRICATION OF TITANIUM DIBORIDE PATTERNED ON SILICON SUBSTRATES FOR MONO- AND CO-CULTURE OF ENDOTHELIAL AND MESENCHYMAL STEM CELLS
… of substrate material properties such as mechanical, chemical and electrical using 2D sheet based configurations. The device has matrices of different geometries, to determine factors that affect cell growth and orientation. With the design of patterned geometries on the titanium diboride …
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Density profiles of plasmas confined by the field of a Levitating Dipole Magnet
… by the following parameters: levitated vs. mechanical support of the central dipole coil; input ECRH frequency and power; background pressure of neutral particles; plasma species. The gradients of the density profiles are, however, largely independent of the experimental conditions and …
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Bismuth nanowire and antidot array studies motivated by thermoelectricity
… on rigid substrates. The substrate provides mechanical support for the generation of crack-free PAA films over areas of tens of cm2, while electrically-conducting substrates can serve as back-electrodes for the electrochemical growth of nanowires and for their electrical characterization. …
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Effects of Mechanical Interventions on Human Locomotion
… are also adaptive, and physical interaction with mechanical interventions may substantially change their behavior. To advance technologies for human locomotion, therefore, not only it is important to understand fundamentals of human locomotion itself, but also it is required to understand how …
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Development of chitosan/alginate/silver nanoparticles hydrogel scaffold for soft tissue engineering applications
… with silver nanoparticles (AgNPs) with enhanced mechanical properties and biosafe function is proposed. Different ratios of chitosan/alginate (Chi/Alg) were prepared and the effect of different ratio (1:1, 1:2 and 2:1) to the mechanical, biological properties with and without AgNPs and …
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Use of growth factors and adhesive ligands to promote connective tissue progenitor colony formation from fresh marrow
… material is autologous bone, which provides mechanical support, possesses factors that promote bone formation, and contains connective tissue progenitors (CTPs), a heterogeneous population of connective tissue stem and progenitor cells that contribute to neotissue formation. A major …
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Effect of volume fraction of solids on the compressive stress-strain behavior of collagen-glycosaminoglycan scaffolds
… are often deployed with a non-degradable support structure such as a waterproof film or a silicone neural tube which are removed after healing is complete if it is outside the body (for skin regeneration) or are expected to remain permanently in the body (for nerve regeneration). …
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The laser alignment system for the CMS silicon microstrip tracker
… Its goal is to measure the deformations of the mechanical support structure of the tracker with a precision better than 100 micron. The alignment system uses laser beams with a wavelength of 1000-1100 nm that can traverse several layers of silicon sensors inducing a signal in the strips. …
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