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Elastic Properties of the Human Femur
89,90 € *
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Elastic Properties of the Human Femur ab 89.9 € als gebundene Ausgabe: Local Anisotropic Material Laws for Patient-Specific Modelling. Aus dem Bereich: Bücher, Wissenschaft, Medizin,

Anbieter: hugendubel
Stand: 29.02.2020
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Elastic Properties of the Human Femur
89,90 € *
ggf. zzgl. Versand

Elastic Properties of the Human Femur ab 89.9 EURO Local Anisotropic Material Laws for Patient-Specific Modelling

Anbieter: ebook.de
Stand: 29.02.2020
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Signal Analysis of Quantitative Ultrasound Meas...
48,80 € *
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For the prediction of osteoporotic fracture risk quantitative Ultrasound (QUS) is an alternative to techniques like X-ray absorptiometry or magnetic resonance tomography. In QUS measurements short pulses with center frequencies of 0.5 – 1 MHz are transmitted through bone. From the received signals characteristic transfer parameters associated with mechanical bone properties are determined. Within two research projects a device has been developed to transfer this technique from peripheral sites like the heel to the proximal femur, which is a main fracture site. In doing so, the conventional signal processing techniques for the calculation of the standard QUS parameters frequently failed due to multipath transmission of sound waves in bone. Therefore, the aim of this work is the development of a signal analysis which allows for characterizing sound paths separately.Based on theoretical considerations regarding sound propagation in bone and the introduction of the standard QUS parameters, the impact of multipath transmission to the calculation of these parameters is discussed. Analytically and with simulations errors are illustrated which arise from disregarding the existence of multiple sound paths. Furthermore, the ex vivo and in vivo measurement setups are shortly presented.Main focus of this work is put on the signal analysis. For the separation of superimposed signal components from different sound paths a model-based signal analysis is adapted from the area of nondestructive material testing to this specific task, at first. This algorithm is based on the analytical description of the received US pulses in the time domain as a superposition of several Gaussianmodulated cosines with additive white noise. Applying nonlinear optimization procedures using leastsquares fits which are integrated in an iterative Space Alternating Generalized Expectationmaximization algorithm (SAGE) the difference between measured and modelled signal is minimized and, thus, the model parameters of each signal component are determined. Then, the transfer parameters are calculated from the shift of these parameters compared to a reference signal. However, this algorithm is limited to signals, which can be described as Gaussian modulated cosines in the time domain.

Anbieter: Dodax
Stand: 29.02.2020
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Effect of local use of bisoprolol(beta blocker)...
49,90 € *
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Bisoprolol fumarate (BF) is a synthetic _1- cardio selective adrenoreceptorblocking agent. BF can only used in treatment of cardiovascular disease such as (Hypertension and Myocardial Infarction). This is experimental study to bone showed the local effect of beta -1 selective blocker Bisoprolol fumarate gel 1% (BFG1%) on bone healing . The aims of this study were to demonstrate the physicochemical properties of BFG1% as well as identify the effect of this preparation on bone healing in rabbits through measuring certain biochemical parameters histological in addition to histomorphometric examination of the induced defect on rabbit's femur.

Anbieter: Dodax
Stand: 29.02.2020
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Finite Element Analysis of Bone Remodeling. Imp...
73,90 CHF *
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Master's Thesis from the year 2006 in the subject Medicine - Biomedical Engineering, grade: 1.0, Technical University of Munich (LS Statik), course: Master of Science of Computational Mechanics, 94 entries in the bibliography, language: English, abstract: The process of adaptive bone remodeling can be described mathematically and simulated in a computer model, integrated with the finite element method. The main focus of this thesis is the implementation of a bone remodeling algorithm in MATLAB and ANSYS on the basis of FEM. The strain energy density is used as mechanical stimulus. The cortical and trabecular bone are described as continuous materials with variable density. This thesis can be divided into four main parts. The first part is due to the material properties of cortical and trabecular bone. The second part is about the remodeling theory and gives an historical review of the developed numerical approaches up to now. The implementation of the remodeling algorithm in ANSYS and MATLAB as well as its validation is topic of part three. In last main part, the algorithm is applied to a 2D FE-model of a human proximal femur.

Anbieter: Orell Fuessli CH
Stand: 29.02.2020
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Finite Element Analysis of Bone Remodeling - Im...
40,90 CHF *
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Master's Thesis from the year 2006 in the subject Medicine - Biomedical Engineering, grade: 1.0, Technical University of Munich (LS Statik), course: Master of Science of Computational Mechanics, 94 entries in the bibliography, language: English, abstract: The process of adaptive bone remodeling can be described mathematically and simulated in a computer model, integrated with the finite element method. The main focus of this thesis is the implementation of a bone remodeling algorithm in MATLAB and ANSYS on the basis of FEM. The strain energy density is used as mechanical stimulus. The cortical and trabecular bone are described as continuous materials with variable density. This thesis can be divided into four main parts. The first part is due to the material properties of cortical and trabecular bone. The second part is about the remodeling theory and gives an historical review of the developed numerical approaches up to now. The implementation of the remodeling algorithm in ANSYS and MATLAB as well as its validation is topic of part three. In last main part, the algorithm is applied to a 2D FE-model of a human proximal femur.

Anbieter: Orell Fuessli CH
Stand: 29.02.2020
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Finite Element Analysis of Bone Remodeling. Imp...
46,30 € *
ggf. zzgl. Versand

Master's Thesis from the year 2006 in the subject Medicine - Biomedical Engineering, grade: 1.0, Technical University of Munich (LS Statik), course: Master of Science of Computational Mechanics, 94 entries in the bibliography, language: English, abstract: The process of adaptive bone remodeling can be described mathematically and simulated in a computer model, integrated with the finite element method. The main focus of this thesis is the implementation of a bone remodeling algorithm in MATLAB and ANSYS on the basis of FEM. The strain energy density is used as mechanical stimulus. The cortical and trabecular bone are described as continuous materials with variable density. This thesis can be divided into four main parts. The first part is due to the material properties of cortical and trabecular bone. The second part is about the remodeling theory and gives an historical review of the developed numerical approaches up to now. The implementation of the remodeling algorithm in ANSYS and MATLAB as well as its validation is topic of part three. In last main part, the algorithm is applied to a 2D FE-model of a human proximal femur.

Anbieter: Thalia AT
Stand: 29.02.2020
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Finite Element Analysis of Bone Remodeling - Im...
34,99 € *
ggf. zzgl. Versand

Master's Thesis from the year 2006 in the subject Medicine - Biomedical Engineering, grade: 1.0, Technical University of Munich (LS Statik), course: Master of Science of Computational Mechanics, 94 entries in the bibliography, language: English, abstract: The process of adaptive bone remodeling can be described mathematically and simulated in a computer model, integrated with the finite element method. The main focus of this thesis is the implementation of a bone remodeling algorithm in MATLAB and ANSYS on the basis of FEM. The strain energy density is used as mechanical stimulus. The cortical and trabecular bone are described as continuous materials with variable density. This thesis can be divided into four main parts. The first part is due to the material properties of cortical and trabecular bone. The second part is about the remodeling theory and gives an historical review of the developed numerical approaches up to now. The implementation of the remodeling algorithm in ANSYS and MATLAB as well as its validation is topic of part three. In last main part, the algorithm is applied to a 2D FE-model of a human proximal femur.

Anbieter: Thalia AT
Stand: 29.02.2020
Zum Angebot