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.
Results
Showing 1 to 20 of 37 for “"Bone structure"”.
-
Effects of Exercise and Traditional Chinese Medical Modalities on Bone Structure and Function
Bone loss often leads to osteoporosis. This is a disease characterised by low bone mass and microarchitectural deterioration of bone tissue, leading to enhanced bone fragility and a consequent increase in fracture risk. Osteoporosis is a complicated syndrome whose treatment and prevention crosses …
-
Sex-specific changes in bone structure and strength during growth: pQCT analysis of the mid-tibia
Introduction: The process by which children's bones grow has not been fully charcterised. The current dogma is that girls fill in their medullary canal area by forming bone at the endosteum. It has been argued that the sex difference in how bone strength is conferred -- favouring boys -- may …
-
Tea types and their effects on in vitro mineralization and in vivo bone structure and density
… health benefit of tea is its capacity to have bone supportive effects when consumed throughout life. Prior to testing the potential bone supportive effects, it was important to characterize several types of tea and determine the ideal steeping time for each tea, maximizing the quantity of …
-
Tissue-specific behavioural signatures in cortical and trabecular bone. Variations in long bone structure in medieval Britain, and the differential effects of age.
… structural properties of cortical and trabecular bone in the limbs are compared in three groups from a medieval British population. Since both tissues have been shown to adapt to mechanical loading, anthropologists have interpreted the morphology of either cortical or trabecular bone as a record …
-
The effects of a high fat diet on musculoskeletal health in aged male C57BL/6J mice
… that can negatively impact musculoskeletal structure and function. It is important to study these aspects because of current high rates of obesity and the increasing proportion of seniors in North America. This study investigated the effects of a long-term high fat and sucrose diet (HFS) …
-
Evaluation of bone strength: microtomographic tecniques
… mechanical and histomorphometrical properties of bone. The main objects of this study were the bone tissue properties and its resistance to mechanical loads. Moreover, the knowledge about the equipment selected to carry out the analyses, the micro-computed tomography (micro-CT), was improved. …
-
A qualitative and quantitative investigation of structural morphology in the neonatal ilium
Cortical and trabecular bone characteristics can be used to make predictions regarding previous loading regimes and developmental milestones which a bone has encountered. This has led to the suggestion that in the adult pelvis, bone patterning is related to the remodeling forces generated during …
-
Translational studies into the effects of exercise on estimated bone strength
… associated with exercise is known to benefit bone health; however, most studies explore exercise benefits on bone mass independent of bone structure and strength. The purpose of this dissertation is to explore the response of the skeleton to exercise across the translational divide between …
-
The Fruit of Poncirius Trifoliata Promotes Mesenchymal Stem Cell Differentiation into Osteoblasts in Glucocorticoid-induced Osteoporosis Model
… (DEX)-treated MC3T3-E1 cells and primary bone marrow mesenchymal stem cells (BMSCs). Five fractions of ethyl acetate extract of poncirus trifoliata through column chromatography over a silica gel eluting in gradient system and combined based on their thin layer chromatography (TLC) …
-
Study of the microstructure and mechanical properties of hummingbird wing-bones
… and mechanical properties of wing bones of an Anna's hummingbird (Calypte Anna) and a tree swallow (Tachycineta bicolor) was conducted to determine whether the hummingbird bones exhibited unique features due to the high wing loading of the bird. It was hypothesized that the …
-
Using finite element models under multiple loading conditions to improve the association between radius and tibia microarchitecture and prevalent osteoporotic vertebral fracture
Bone microarchitecture differences at the tibia and radius, measurable by high-resolution peripheral quantitative computed tomography (HR-pQCT) exist between individuals with a prevalent vertebral fracture and healthy controls. As fracture is a result of mechanical failure, FE models of these sites …
-
A Novel Technique for Fabricating Aligned Nanofibers by Using Solution Electrospinning
… project is producing three-dimensional nanofiber structures.</p> <p>The reason of producing three dimensional nanofibers structure is biomimicking the structure to natural three dimensional bone structure. Furthermore, in order to make three-dimensional nanofiber structure, the collector was …
-
Ultrasonic propagation in cancellous bone
… to apply them to the propagation in cancellous bone. The work is related to a new technique which uses ultrasonic attenuation to measure and predict osteoporosis, especially in the elderly population.The ultrasonic attenuation, the longitudinal ultrasonic velocity, the scattering effect and the …
-
Advanced in Vitro Models for Studying Bone Physiology
<p>Bone is a highly calcified organic-inorganic composite tissue with complicated hierarchical structure. The presence of complex multi-cellular organization within opaque mineralized matrix makes it challenging to use conventional methods to study in vivo bone physiology even using model animals. …
-
Localizing longitudinal changes in volumetric bone mineral density after acute knee injury using voxel-based morphometry
… ACL injury often manifest in the peri-articular bone, which can be accurately captured using X-ray-based imaging modalities (e.g., dual energy quantitative computed tomography; DE-QCT) that capture bone mineral density (BMD). Voxelbased morphometry (VBM) can provide a comprehensive assessment of …
-
Investigation of age related changes to porcine cortical bone using nanoindentation and ash content
… on the characterization of porcine cortical bone during its development stage. The goal of this research is to gain a further understanding of cortical bone, and to obtain data that can be used for inputs and validation of a computational model of cortical bone and individual bone lamella. …
-
Musculoskeletal adaptation to Partial Weight Suspension : studies of Lunar and Mars loading
… of this novel environment. In the weight bearing structures of the body, bone loss and muscle atrophy far in excess of age-related declines are hallmarks of microgravity adaptation. However, while the physiological effects of such disuse unloading are well-described, the effects of partial weight …
-
The Design Modelling of PEEK Composite for Bone Implants
… (PEEK) materials for improved bone implantation. While PEEK materials offer benefits such as non-toxicity, high strength, and toughness, they often fall short in replicating the strength and biological properties of natural bone. Addressing these limitations, this study presents …
-
MRI Quantification of Cortical Bone Microstructure and Material Composition with Ultrashort Echo Time Sequences
Quantitative imaging assessment of cortical bone structure and material composition provides additional information about bone health beyond conventional radiographic assessment of bone mineral density (BMD). Large prospective studies have found that cortical bone imaging biomarkers are associated …
-
Impact of genetics and phosphorous nutrition on bone metabolism
<p>Phosphorous (P) is essential to bone growth and maintenance; however, little research has focused on the genetic mechanisms controlling P utilization. Thirty-six pigs from 2 sire lines known to differ in bone structure (heavier-boned, HB, and lighter-boned, LB) were assigned to three diets for 2 …
Page 1 of 2