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 25 for “"stereology"”.
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A COMPARISON OF 2D IMAGE ANALYSIS AND DESIGN-BASED STEREOLOGY FOR EVALUATING MORPHOLOGICAL AND ANATOMICAL CHANGES IN THE DOPAMINERGIC SYSTEM OF THE RODENT MIDBRAIN
… features in the brain. Design-based stereology overcomes this limitation by applying probability theory, yet many neuroscience investigators still use 2D analyses. The purpose of this study is to compare 2D analysis with design-based stereology in quantifying differences of …
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뇌종양 동물모델에서의 인간신경줄기세포주의 종양으로의 특이적 이주에 관한 입체적 분석
… 5 5. X-gal stain 6 6. Cell count and unbiased stereology in a tumor region of rats 7 7 .Cell count and unbiased stereology in a entire brain of rats 8 8. Labeling of F3 Cells with 5-bromo-2-deoxyuridine 8 9. Hematoxylin and Eosin stain 9 10. Beta-galactosidase immunofluoresecence 9 11. …
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Grain Boundary Character Distribution in the HAZ of Friction Stir-Processed Al 7075 T7
… metal via multi-section plane five-parameter stereology. The stereology is conducted in a convenient macroscopic coordinate frame, associated with the HAZ. This is the first investigation to determine the GBCD in the HAZ of friction-stirred weld material and requires multiple section plane …
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Stereological Analysis of Oligodendrocyte Progenitor Cells In the Adult Mouse Brain
… and differentiation. More specifically, we used stereology to establish whether extensive reference memory training and system-wide administration of GABAergic agonists and antagonists could influence the proliferation and differentiation of adult OPCs, as well as the prevalence of OPC-neuron …
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Recovering Grain Boundary Inclination Parameters Through Oblique Double-Sectioning
… as accurate as the 25 section-cuts required for stereology in resolving the finer details in the recovered distribution.
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Quantitative Studies Defining the Cellular Composition of the Human Brain and Spinal Cord
… conventional, and already validated, histology/stereology methods. When I found that differences between the new and the older methods did not account for the discrepancies between conclusions, I then contributed to a systematic review of the literature to determine the source(s) of the …
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Stereological techniques for synthesizing solid textures from images of aggregate materials
… here is inspired by and builds on prior work in stereology--the study of 3D properties of a material based on 2D observations. Unlike ad hoc methods for texture synthesis, this approach has rigorous mathematical foundations that allow for reliable, accurate material synthesis with well-defined …
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Stereological Interpretation of Rock Fracture Traces on Borehole Walls and Other Cylindrical Surfaces
… walls and other cylindrical surfaces by using stereology. The relationships between the three-dimension fracture intensity measure, P32, and the lower dimension fracture intensity measures are studied. The analytical results show that the conversion factor between the three-dimension fracture …
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Studies of the microenvironment and microflora of the canine external ear canal
… the average diameter was 4.8 cm. Morphometric stereology was used to evaluate histological features of 28 clinically normal and 15 otitic canine ears at four anatomical levels. Marked variation was found in the distribution of sebaceous and apocrine glands in the aural integument in healthy …
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A machine vision-based approach to measuring the size distribution of rocks on a conveyor belt
… different. However, after incorporating a stereology-based correction, hypothesis tests on a 3m belt-cut test-set show that the obtained distributions are similar.
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Quantitative characterization of the microstructure of selected Brazilian hardwood species using stereological methods
The techniques of stereology were applied to the microscopic transverse sections of 22 Brazilian tropical hardwood species. A minimum of 4 different trees, one slide per tree and 20 or 30 sampling fields per slide for each species were studied. Simple point fractions (P<sub>p</sub>), intersection …
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Building, Updating and Verifying Fracture Models in Real Time for Hard Rock Tunneling
… estimators are developed using principles of stereology. An optimization technique is developed utilizing Differential Evolution to infer fracture size and shape from trace data obtained on two or more nonparallel sampling planes. A method of producing nearly bias free empirical trace length …
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Axonal Damage in Repetitive Concussive Traumatic Brain Injury: Characterization and Contributing Factors
… callosum after injury, which were quantified by stereology. Silver staining was unaffected. Use of the targeted toxin, Mac-1-Saporin, was found to dramatically reduce microglial number but also result in non-specific neuronal loss days 7 after rcTBI. Collectively, these experiments indicate that …
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Recapitulation of Human Placental Insufficiency in a Novel Mouse Model :New Paradigm in Translational Research
… postnatal growth, placental volume determined by stereology, quantification of placental insulin-like growth factors-1(IGF-1) and IGF-2 and IGF binding proteins(IGFBP 2 and 6) by ELISA and gene expression by qPCR and GeneChip microarray analysis. RESULTS: Compared with control, MUAL caused …
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Age sensitivity of the Barnes Maze and the Morris Water Maze: Associations with cerebellar cortical Purkinje neurons
… deficits were found in the MWM. Unbiased stereology revealed an age-related loss in cerebellar cortical Purkinje neurons from 12-25 months, whereas hippocampus volume remained stable across the life span. Purkinje neuron number, but not hippocampus volume, was correlated with spatial …
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Analytical and experimental investigation of microstructural alterations in bearing steel in rolling contact fatigue
… size for the cases investigated; however, a stereology study showed that larger inclusions have a higher chance to be located at the critical depth and cause failure. Crack maps were recorded and compared to spall geometries observed experimentally. The results show that crack initiation …
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Quantitative anatomical characteristics of plantation grown loblolly pine (Pinus taeda L.) and cottonwood (Populus deltoides Bart. ex Marsh) and their relationships to mechanical properties
… characterized using the principles of stereology. Physical and mechanical properties were also determined for each growth increment of six sample trees of both species. Anatomical parameters measured were correlated to certain mechanical properties. The numerical values obtained for the …
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Region-Specific Expression of Brain-Derived Neurotrophic Factor (BDNF) mRNA after Long Term Treatment with Lithium Carbonate.
… to tyrosine hydroxylase (TH) antibody using a stereology method in 16-week old male G93A mice. There was a 28 % decrease in the number of dopaminergic neurons in the ALS mice. The degeneration of the dopaminergic neurons was prevented by daily administration of lithium in the diet for 4 weeks. …
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Effects of long-term hormone treatment on cognitive behavior and the structure of the medial prefrontal cortex during aging in female rats
… both aging and ovarian hormones. Using unbiased stereology and light microscopy, neuron number and synaptophysin labeled boutons iii were quantified. Images were acquired of the tyrosine hydroxylase sections using Axiovision (Zeiss) on a fluorescent microscope and fiber densities were quantified. …
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The impact of mouse placental endocrine function on fetal resource allocation and adult offspring health
… morphology was evaluated using histology and stereology techniques. Offspring metabolic health was evaluated via insulin and glucose tolerance tests, by examining pancreas morphology and insulin content, and by determining the abundance of proteins involved in gluconeogenesis, insulin …
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