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 15 of 15 for “"Initial stability"”.
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The Effect of a Medial Collar on the Initial Stability of a Cementless Primary Femoral Hip Prosthesis
<p>The initial stability of a primary femoral hip prosthesis is important to the long-term survivorship and efficacy of the prosthesis. In the absence of adequate initial stability, micromotion between the prosthesis and the proximal endosteal femoral bone will result in partial fibrous …
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Effects on Initial Fixation of Cementless Tibial Trays in Total Knee Arthroplasty
… (BMD), among other factors, largely effect the initial stability of the cementless tibial tray component in a total knee replacement (TKR), where increased motion at the tray-bone interface hinders bony ingrowth. With a lack of bony ingrowth, the cementless implant will not experience long-term …
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Feasibility study of Leonardo da Vinci's bridge proposal over the Golden Horn in Istanbul
… critical structural factors include geometric stability and the response to support displacements. Both of these factors are tested through analytical means and a 3D physical model supported by moveable abutments. The combination of the initial stability, the kinematic mechanism under spreading …
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3- Dimensional analysis of true fracture plane for the proper fixation on lateral humeral condyle fracture in children
… In order to obtain maximal biomechanical stability of fracture fixation, Kirschner-wire should be inserted 27 degrees against long axis of humerus on AP view and 25 degrees on lateral view. This study will contribute to initial stability of pediatric lateral humeral condyle fracture …
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A study on stability of an all polyethylene pressfit acetabular cup
The primary stability of a pressfit acetabular cup is crucial for its proper performance due to the lack of screws or cement. The primary stability is only given by the pressfit, whereas the secondary fixating derives from osseointegration of the implant. While cemented cups are able to be fully …
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Hydrostatic and intact stability analysis for a surface ship
… or "displacement and other curves." An intact stability analysis follows naturally from the hydrostatic analysis. Hydrostatics (determination of KM) coupled with a KG value can be used to predict initial stability. This intact stability analysis evaluates the range of stability at both small …
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Assisting Technology: Disability Expertise and Labor in Artificial Intelligence (AI) Data Work in China
… due to structural ableism, supplied the initial stability for the AI company. In the meantime, through their disability-informed, non-normative knowledge of flourishing in uninhabitable worlds, or what anthropologist Cassandra Hartblay calls “disability expertise,” disabled workers have …
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ASSESSMENT OF PERI-IMPLANT BONE MICROARCHITECTURE IN D4 BONE: AN EX VIVO MICROCT ANALYSIS
… impact of different implant designs on primary stability, peak insertion torque (PIT), implant stability quotient (ISQ), and peri-implant bone microarchitecture in low-density bone (D4). The investigation focused on three Straumann implant systems: Bone Level Tapered (BLT), Bone Level X (BLX), …
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Validation and Analysis of Model-Predicted Patellar Implant-Synthetic Bone Relative Motion in Cementless Total Knee Replacement During a Single-Leg Lunge
<p>Initial stability of cementless total knee replacement (TKR) components is crucial to establish bony ingrowth into the porous interface surface and long-term fixation, however, few cementless patellar implant micromotion tests have been developed. Previous studies were all focused on qualifying …
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Cementless Tibial Base Micromotion During Activities of Daily Living
<p>Initial stability of cementless total knee replacement (TKR) components is directly related to long-term fixation and success, as excess motion hinders bony ingrowth. To assess implant stability, there is a need for more physiologically accurate loading conditions, incorporating forces and …
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Dynamics of cloud-top generating cells in winter cyclones
… of radiative forcing and a range of cloud-top stability profiles on the development and maintenance of cloud top generating cells (GCs) in high-resolution (100 m grid spacing) idealized Weather Research and Forecasting model (WRF) simulations with initial conditions representative of the …
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Exploring protein fitness landscapes with new high-throughput technologies
… but related starting points and test their initial evolvability. Stabilizing the starting point results in increased mutational robustness, broadening the range of accepted mutations. However, increased initial stability does not necessarily correlate to higher functional improvement, …
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Numerical and experimental studies on the mechanical behaviour of the distal femur following total knee arthroplasty
… mechanical environment of the distal femur and stability of the prosthesis. FE analyses with fully bonded interfaces indicate that femoral components are subject to areas of low stress (stress shielding) immediately under the anterior flange and chamfer regardless of internal implant features. …
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Synthesis and mechanistic studies into the cytotoxic activity of garlic-related trisulfides in cancer cells
… details of the optimization conditions and the stability of the products. The methodology yields aliphatic trisulfides in high yield and purity, while aromatic trisulfides are more labile. The trisulfide's distinct chemical shifts in 1H NMR allow for their identification and differentiation from …
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Increasing the Evidential Value of Biological evidence
… however, it was established that testing loci stability is an essential requirement in the optimisation process. The results presented in this thesis suggest the reliability of the data can be increased when the two competing target species are selected from the same loci, which minimised the …