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Showing 1 to 20 of 34 for “"Trabeculae"”.
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Electric Current Flow in Frog Atrial Trabeculae
Made available in DSpace on 2014-12-14T05:40:43Z (GMT). No. of bitstreams: 1 7821010.pdf: 8936012 bytes, checksum: f1fd68206d56bf812e223f01bcfcb0b3 (MD5) Previous issue date: 1978
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Morphology of Brain Sulci Trabeculae and its effect on Brain during Impacts
… has been shown that the subarachnoid space (SAS) trabeculae play an important role in damping the effect of an impact, thus reducing the injuries. However, the influence of sulci parameters and the sulci trabeculae in TBI due to impact is unexplored. Studies have shown that inclusion of sulci in …
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Einfluss von Iloprost, einem stabilen Prostazyklin-Analogon, auf die myokardiale Kontraktilität im Vergleich zu natürlichem Prostazyklin : Laborexperimentelle Untersuchung an humanem Herzgewebe und Gewebe aus Kaninchenherzen
… human atrial and rabbit atrial and ventricular trabeculae to iloprost and epoprostenol was investigated. In the first series of tests the dose-dependent contractile response to stepwise increased iloprost concentrations was investigated. Developed force was continuously registered at a pacing …
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The role of extracellular matrix in modulation of myocyte Ca2+ signalling and contraction in the isolated rat heart
… comparison to Ca2+ transients from multicellular trabeculae. The role of ECM in myocyte Ca2+ modulation is poorly understood. We therefore hypothesised that Ca2+ handling might be modulated by (bidirectional) signalling between myocytes and the ECM, and that this important link could be lost …
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Optimal Parameter Values for Accurate and Repeatable Nanoindentation of Human Trabecular Bone
… using a single nanoindenter on a single trabeculae, with the assumption that material properties within the individual trabeculae were internally consistent. Parameters not of interest during this study, such as ambient temperature, maximum load, and maximum indentation depth were held …
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Myocardial force and intracellular Ca2+ in an animal model of hypertensive heart failure
… In order to carry out this aim, left ventricular trabeculae were utilized from failing hearts of spontaneously hypertensive rats (SHR) and their normotensive Wistar-Kyoto (WKY) controls. At a physiological stimulation frequency (5 Hz), and temperature (37 °C), the peak stress of SHR trabeculae was …
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Microdamage accumulation in bovine trabecular bone
… of microcracks, damaged area, the number of trabeculae containing microcracks, the pattern of microcracking, the extent of microdamage across the thickness of the trabeculae, and the size of the damage-containing region in the specimen. The chelating fluorochrome marker technique was used to …
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Effects of structure on flow mechanics in the human left ventricle and respiratory tract
… that is still not well understood is the role of trabeculae on the biomechanics of the left ventricle. Similarly, large-scale airflow through the respiratory tract has not been fully investigated as a function of age or mechanical ventilation. This research has revealed some of the flow patterns …
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Orientation of the Cardiac Myosin Regulatory Light Chain Determined by Polarized Fluorescence
… conjugates were exchanged into demembranated trabeculae from rat ventricle, and the orientation of the BSR fluorescence dipole determined by<br/>polarized fluorescence.<br/>The orientations of the N‐lobe were similar to those determined from chicken<br/>gizzard RLC probes exchanged into …
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Diabetes and the Female Heart
… in mechanoenergetics of isolated healthy trabeculae, to understand differences in indices of functional performance including activation heat, cross-bridge heat, force length work output, and mechanical efficiency between males and females. Second, I investigated to establish a type 2 …
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A qualitative and quantitative analysis of the developing human lumbar vertebral column
… predominantly driven by ossification with trabeculae in close proximity to the primary centre of ossification thicker and more mature than in peripheral regions, which displayed a radial pattern of thin trabeculae extending outwards from the ossification centre. The presence of vasculature …
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Investigation of bone response to implant materials by electron microscopy and computer simulation
… outside, porous inside, and orientation of the trabeculae. The bone density distribution pattern also matched with previous result by other people. Different implants were introduced to simulate the replacement for the femoral head. It has been proved that the difference in Young's modulus …
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Multi-scale structural design of titanium implants for improved osseointegration
… three dimensional constructs with natural, trabeculae-inspired porosity. Osteoblasts and mesenchymal stem cells are responsive to the porosity and detail of these constructs, and exhibit increased production of osteoblastic differentiation and maturation factors on porous constructs compared …
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Study of the microstructure and mechanical properties of hummingbird wing-bones
… suggesting the mechanical advantages of the trabeculae were required. Nano-indentation results proved to be relatively inconclusive, but generally provided results reasonably close to expected literature values. Further experimentation would be required to determine if the deviation from …
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The Derivation of the Myocardial, Epicardial and Endocardial Lineages from Human Pluripotent Stem Cells
… during the formation of ventricular trabeculae. While protocols for the efficient generation of cardiomyocytes from human embryonic and induced pluripotent stem cells (collectively referred to as human pluripotent stem cells; hPSCs) have been developed, strategies for the generation …
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Die Expression und Lokalisation von Matrix Metalloproteinasen (MMP) und ihrer spezifischen endogenen Inhibitoren (TIMP) in menschlichen primären Gehirntumoren
… Tumors heterogen: Die zellreichen mesenchymalen Trabeculae der Tumorzellen zeigten eine starke Immunfärbung für Gelatinase A, wobei die neuroektodermalen Areale sich überwiegend mit mt1-MMP färbten.
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Analysis of the microarchitecutre of the human femoral head using micro-computertomography
… and orientation of the primary compressive trabeculae.
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FRACTURE HEALING IN A RABBIT MODEL: A STUDY OF OSTEOCALCIN LOCALISATION
… osteoblasts lining newly forming trabeculae. Cells in the endosteum and in the cambium layer of the periosteum stained strongly for osteocalcin. Following periostel excision, bony callus originated only from the tissue s and blood vessels external to the perisostem indicated that …
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Computational modeling of trabecular bone in lower extremity injuries due to impact
… the buckling that appears within the spongious trabeculae structure. Finally we included fracture in our dynamic simulations using the discontinuous Galerkin method developed by Radovitzky's group [37] to observe initiation and propagation of cracks within the trabecular and to capture the …
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The Physical Basis of Extreme Animal Coloration
… found in all species - steep ridges and expanded trabeculae compared to dark brown butterflies. Using finite-difference time-domain (FDTD) modeling, I discovered that those two conserved features reduce reflectance from the scales by up to 16-fold. Furthermore, additional modeling demonstrated …
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