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 “"length change"”.
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An Evaluation of Root Length Change Measurements using Intraoral Scan and Panoramic Radiographs
… of using panoramic radiographs to measure root length change over the course of orthodontic treatment, using intraoral scans of crowns, and a mathematical model to account for distortions in the radiographs. The study additionally evaluated whether a best-fit equation could be created from the …
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THE INFLUENCE OF LENGTH CHANGE SPEED AND DIRECTION ON DYNAMIC FUNCTION POTENTIATION IN FAST MOUSE MUSCLE
… of dynamic function was dependent upon both length change speed and direction. Mouse EDL was cycled in vitro (250 C) about optimal length (Lo) with constant peak strain (± 2.5% Lo) at 1.5,3.3 and 6.9 Hz before and after a conditioning stimulus. A single pulse was applied during shortening or …
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Development of a short test for the identification of aggregates causing poor concrete performance when frozen
… at 100 cycles, slope of curves of time vs. length change, slope of curves of temperature vs. length change, residual length change, slope of entire first freeze curve, total porosity, porosity in certain pore size range, slope of pore size distribution curve in certain pore size range, and …
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The allometry of bird flight performance
… recorded the components of muscle power (muscle length change, force production, frequency) in the four largest species (Common raven, American crow, Black-billed magpie, and Gray jay). Flight performance and total aerodynamic power scaled with negative allometry, but were significantly …
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The allometry of bird flight performance
… recorded the components of muscle power (muscle length change, force production, frequency) in the four largest species (Common raven, American crow, Black-billed magpie, and Gray jay). Flight performance and total aerodynamic power scaled with negative allometry, but were significantly …
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Development of Concrete Shrinkage Performance Specifications
… its service life, concrete experiences volume changes. One of the types of deformation experienced by concrete is shrinkage. The four main types of shrinkage associated with concrete are plastic, autogeneous, carbonation and drying shrinkage. The volume changes in concrete due to shrinkage can …
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The Effect of Composition on the Alkali-Silica Mitigation Potential of Fly Ash-Ground Glass Blends in Concrete
… ASR. Testing conducted involves measurement of length change, compressive strength and the fresh mix properties.
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APPLICATION OF TAGUCHI'S ORTHOGONAL ARRAY IN AN EXPERIMENT FOR FORMULATION OF CEMENTITIOUS REPAIR MATERIAL
… tensile bond adhesion, abrasion resistance, and length change. In this study the objective is to develop the self-leveling mortar with target properties using Taguchi's orthogonal array technique. Each of the eleven factors was studied at two levels. The base formula was taken as follows: CFL = …
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CHROMOSOMAL SIGNATURES OF AGING, SIBLING STATUS, AND POLLUTANTS: AN EXPLORATION OF COMMON LOON TELOMERE DYNAMICS
… especially early in life. Therefore, telomere length measurements can be a good indicator of life expectancy at the population levels. In some species, telomere lengths are better indicators of longevity than age bringing telomere analysis to the forefront of life expectancy research. For this …
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Digital image correlation analysis of alkali silica reaction in concrete with recycled glass aggregate
… results are compared to physical measurement of length change. This thesis examines the effectiveness of the MATLAB DIC code and the possibility of using the code in studies of ASR based on digital images of the mortar bar surface. This includes a throughout review of the basic algorithm of the …
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Low temperature electron irradiation induced defects in gallium arsenid: Bulk and surface acoustic wave studies
… measurements, but was observed in earlier length Change experiments. Irradiation of GaAs:Cr produces no Cr-radiation defect complexes. The attenuation peak associated with Cr 2+ decreases with electron dose, but starts to recover at 150 K. The same behavior is observed when the sample is …
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Effect of pre-stressing on the durability of portland cement concrete
… transverse frequency and initial weight and length measurements were recorded. Thereafter, transverse frequency, weight, length change and temperature change measurements were made periodically. The relative dynamic modules of elasticity and durability factor were then calculated for each …
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Developmental Alterations in the Distribution of Specific Lateral Wall Proteins Modify Outer Hair Cell Mechanical Properties
… in the mammalian cochlea. OHC electromotile length change and force generation are essential for a sensitive and sharply-tuned cochlea. OHC stiffness is in turn important for effective transmission of force from OHCs to other cells in the organ of Corti. Maturation of stiffness in OHCs during …
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Cross-regional word duration patterns in Mandarin
… the duration patterns of words with different length and internal structures. These studies reveal the general duration patterns of Mandarin Words. First of all, all the multi-syllabic words demonstrate the disyllabic long-short metrical form. Second, linguistic factors---syllable structure, …
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Theoretical and Experimental Study of Low-Finesse Extrinsic Fabry-Perot Interferometric Fiber Optic Sensors
… Fringe visibility degradation due to gap-length increase and sensor imperfections is studied. The results indicate that the fringe visibility of a SMF-EFPI sensor is relatively insensitive to the gap-length change and sensor imperfections. Based on the spectral fringe pattern predicated by …
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Understanding MS/MS fragmentation pathways of small molecular weight molecules
… hence weakened, as a result of conformational changes induced by protonation. Bond length changes for a test set of molecules were calculated using quantum chemistry software. Density Functional Theory (DFT) or Austin Model 1 (AM1) or both were used to energy minimise the structures of the …
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Single digital-photo correction for a GIS application and error analysis
… in terms of errors in point position, line length, and polygon area. Computer programs for single digital-photo correction using the collinearity equations and for impact analysis of errors in ground control and DEM data were developed. Point errors in uncorrected photos were tested by the …
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The association of myopia progression with family history of myopia, nearwork, and other risk factors among Singapore schoolchildren: A 2 year follow-up study
… coefficient r = 0.67, P<0.001) and VCD change (correlation coefficient r = 0.84, P<0.001) were significantly associated with myopia progression. Conclusion: The risk factors with significant association with myopia progression were younger baseline age, female, and higher educational …
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Squeezing the Quantum Noise of LIGO below the Standard Quantum Limit
… reaching Earth, these waves caused a minuscule length change between the LIGO mirrors, on the order of 10^(−18) m, a thousand times smaller than a proton. The unprecedented sensitivity of LIGO requires an extremely low noise level. The design of LIGO as an interferometer converts the …
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Fused filament fabrication to manufacture three- and four-dimensional objects made of shape memory polymers
… material properties, behavior, or shape changes according to a program. As the programmable materials require neither control electronics nor technical devices or cables, the self-sufficient behavior makes them fulfill sensor and actuator functionality. Shape memory polymers (SMPs) are …
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