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 1080 for “"Diameters"”.
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The morphology and absolute diameters of galaxies
… arm texture, and in the range of the intrinsic diameters of galaxies, particularly the spirals. Small, high surface brightness spiral galaxies form an important subgroup; these present a saturated or predominantly saturated image on the SRC IIIa-J Survey. An intercomparison of their appearance …
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Network activity arising from optimal diameters of neuronal processes
Electrical coupling provides an important pathway for signal transmission between neurons. In several regions of the mammalian brain electrical synapses have been detected, and their role in the synchronization of neural networks and the generation of oscillations has been studied theoretically. …
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The measurement of radio source diameters using a diffraction method
… describes the measurement of angular diameters of compact radio sources by the technique of interplanetary scintillation. The design, construction and testing of a four acre radio aerial functioning at a frequency of 81.5 MHz is described, and its operation during a survey of the sky …
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An investigation of the effect of varying diameters on the time required for cranking motions
… standard time values for cranking motions of diameters 11, 13, 15, 17, 19, 21, 22, 23, and 24 inches respectively.
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Panorex Interpretation of the Mesio-Distal Axial Inclinations and Mesio-Distal Diameters of the Posterior Teeth
… axial inclinations and the mesio-distal diameters of the posterior teeth. This study indicates that the Panorex can be used as a qualitative and quantitative instrument in the study of the mesio-distal axial inclinations of the posterior teeth. A series of means and standard deviations …
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Effect of Mini-implant Diameters on Primary Stability and Viscoelastic Migration of Mini-implants under Orthodontic Loading
… study were to examine effects of mini-implant diameters on 1) primary stability and 2) time-dependent migration of mini-implant systems under a tangential loading.Materials and Methods Twenty one mini-implants (7 for each 1.4 mm, 1.6 mm, and 2 mm diameter mini-implant) were placed in mandibular …
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Friction and lubrication behaviour of hip resurfacing metal-on-metal and ZTA ceramic on CFR peek implants with various diameters and clearances. Friction and lubrication behaviour of hip resurfacing Co-Cr-Mo and zirconia toughened alumina ceramic heads against carbon fibre reinforced poly-ether-ether-ketone cups with various diameters and clearances have been investigated using serum-based lubricants.
… hip resurfacing implants with various diameters and clearances have been investigated and compared to those of the newly developed zirconia toughened alumina (ZTA) ceramic femoral heads articulating against carbon fiber reinforced poly-ether-ether-ketone (CFR PEEK) acetabular cups with …
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Comparison of Antibacterial Activity of Ozonated Olive Oil and Chlorhexidine Gluconate
… used. To assess the antibacterial activity, the diameters of the growth inhibition zone were measured with a caliper. Results: The diameters of the growth inhibition zone against P. gingivalis were 31.4 ± 5.05 mm for OzOO and 20.9 ± 1.19 mm for CHX (p<0.001). The diameters of the growth …
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Combustion of aerosolized spherical aluminum powders and flakes in air
… (BET) method and respective "BET diameters". It is observed that the rates of pressure rise and rates of flame propagation were higher for aluminum powders with BET diameters of about 2 to 5 um compared to aluminum flakes for which the BET diameters were under 1 um In agreement …
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EFFECT OF PINCHING AND SPACING ON THE GROWTH AND DEVELOPMENT OF SUNFLOWERS (HELIANTHUS ANNUUS) IN EAST TEXAS
… cultivars produced marketable stem lengths, stem diameters, flower diameters, and disk diameters. For the cultivar ‘Superior Gold’ all the treatments produced marketable stems. Only the pinching treatment at node 4 failed to produce marketable stems for the cultivars ‘Sun Bright Supreme’, …
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Friction and lubrication behaviour of metal-on-metal and ZTA ceramic-on-CFR PEEK hip prostheses. Friction and lubrication behaviour of metal-on-metal hip resurfacing and ZTA ceramic heads versus CFR PEEK cups wiith various diameters and clearances using serum-based lubricants with various viscosities.
… (MoM) Biomet hip resurfacing ReCaps with large diameters (>35-60 mm) and different diametral clearances (~ 60-350 µm), and Zirconia Toughened Alumina (ZTA) heads against carbon-fibre-reinforced poly-ether-ether ketone (CFR PEEK) cups with different diameters (>35-60 mm) and diametral clearances …
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Scaffold Permeability as a Means to Determine Fiber Diameter and Pore Size of Electrospun Fibrinogen
… to create scaffolds with three different fiber diameters and pore sizes. The fiber diameters and pore sizes of the electrospun scaffolds were analyzed through scanning electron microscopy and image analysis software. The permeability of each scaffold was measured and used to calculate …
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Confinement Limits For Tensile Lap Splices Under Static Loading
… reinforcement confinement, up to 2-2.5 bar diameters of equivalent concrete cover can be utilized, in lieu of requiring very long lap lengths. The tests also show that total confinement (actual concrete confinement plus equivalent concrete confinement provided by stirrups) is effective …
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Influence of Tooth Crown Size on Malocclusion
… the sample means of 23 of the 24 tooth crown diameters tested were significantly larger in subjects with malocclusions versus those with naturally-occurring good occlusions. Multivariate analysis showed that mesiodistal diameter of the maxillary lateral incisor produced the most significant …
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Induced maturation and spawning of striped bass, Morone saxatilis, exposed to 6-, 9-, and 12-month photothermal regimes
… males exhibited larger maximum testicular diameters (23.5 mm) than non-spermiating males (13.1 mm). Fully mature female and male striped bass exhibited maximum ovarian diameters > 30 mm and testicular diameters > 20 mm as measured by ultrasound. The results of this study indicate that …
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Systematic study of the Taylor method for production of cu-based shape memory alloy microwires : a master's thesis
… uniform fibers up to 5 meters in length with diameters in the range 10 - 35 microns. Particular attention is paid to microwires made from a Cu-Sn shape memory alloy. In addition, because the properties of shape memory microwires depend on their diameter, processing parameters were varied to …
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Mitigation of ozone production by negative corona using electrode wire heating
… corona voltage potential. Smaller corona wire diameters produced ozone at lower rates than larger corona wire diameters. A description of the investigation, the data collected, and a discussion of all results is included.
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Evaluation hämodynamischer Effekte von Timolol, Dorzolamid und Latanoprost bei Patienten mit neu diagnostiziertem Offenwinkelglaukom
… (AVP) and peripapillary arterial and venous diameters were assessed by means of digital image processing. Results: Intraocular pressure (IOP) was significantly lowered by each drug compared to baseline visit (p<0.0001). Between the three groups there was no significant difference in lowering …
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The penetration and mixing of a sonic hydrogen jet injected normal to Mach 4 airstream
… boundary-layer thickness of 2.70 injector exit diameters at the injector station. The investigation was conducted for values of the dynamic pressure ratio ranging from 0.5 to 1.5. At five downstream stations between 7 and 200 injector diameters the mixing region was surveyed to obtain hydrogen …
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Residual stresses in hot-rolled solid round steel bars and their effect on the compressive resistance of members.
… was applied on fourteen samples with different diameters. For three different diameters, finite element models were constructed for the determination of residual stresses. Based on the comparison between the results, the reliability of both experimental and numerical results was analyzed. The …
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