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 66 for “"maximum velocity"”.
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Avalanches in plastic deformation: maximum velocity statistics, finite temperature effects, and analysis of low time resolution data
… several exact results concerning a system's maximum velocity during an avalanche. We find that the scaling of the maximum velocity distribution agrees with experiments on crystal plasticity. Left over from our calculations are several experimental predictions ready to be tested. The maximum …
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The effects of fatigue on the mechanics of forward maximum velocity power skating in skilled and less-skilled skaters.
… the effects of fatigue on the mechanics of maximum velocity power skating, 16 subjects (eight skilled, six less-skilled) were videotaped using two cameras while subjects performed a maximum exertion test covering 380 metres. Subjects were assigned to the skilled or less-skilled group based …
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The Effect of Weight Training on the Swimming Performance of Female Intercollegiate Competitive Swimmers
… tested included a jump and reach; 25 yard mean velocity, 10 yard maximum velocity, distance/stroke at maximum velocity, and stroke rate at maximum velocity for the front crawl and breaststroke. Data analysis was conducted at a .05 level of significance using a correlated t-test. The writer …
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Characterizing the dam break release
… was characterized to check for consistency, maximum velocity, and it's profile. Matlab code was created to analyze both the gate speed and the wave velocity. The maximum velocity was 1503.2 cm/s and there a 30% deviation at most.The wave velocity was found to increase as the water reservoir …
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Open loop performance of a biomimetic flapping foil autonomous underwater vehicle
… parameters were varied to obtain an approximate maximum velocity for the vehicle. Maximum velocity in surge was measured as 1.3827 mis, in sway as 0.4810 m/s, and in heave as 0.3831 m/s. In yaw, the maximum angular velocity was measured as 80.2 degrees per second.
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Developing High Performance Linear Carangiform Swimming
… productive forces can significantly increase maximum velocity. This prototype is able to outperform real Carangiform fish in terms of average maximum velocity (measured in body lengths/ second) and endurance, the duration that top speed is maintained. (C) iSplash-MICRO: it verifies that the …
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Emulating the fast-start swimming performance of the chain pickerel (Esox niger) using a mechanical fish design
Mean maximum start-up accelerations and velocities achieved by the fast-start specialist, northern pike, are reported at 120 ms-2 and 4 ms-1, respectively (Harper and Blake, 1990). In this thesis, a simple mechanical system was created to closely mimic the startle response that produces these …
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Emulating the fast-start swimming performance of the Chain Pickerel (Esox niger) using a mechanical fish design
Mean maximum start-up accelerations and velocities achieved by the fast-start specialist, northern pike, are reported at 120 ms-2 and 4 ms-1, respectively (Harper and Blake, 1990). In this thesis, a simple mechanical system was created to closely mimic the startle response that produces these …
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Utilization of cobalt catalyst for high temperature Fischer-Tropsch synthesis in a fluidized bed reactor
… to determine the minimum fluidization velocity and the maximum velocity prior to entering lean phase fluidization with pneumatic transport of the catalyst. The highest minimum fluidization velocity was found to be about 2800 sccm, there was no maximum velocity found for the reactor …
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Design and fabrication of a high precision wafer polishing machine
… of this polishing tool, was designed for maximum rigidity using FEA analysis. Vibrational analysis was also performed to design a mechanically quiet system. All of the associated components were designed with extreme precision in mind. In addition to the upper structure, a loading …
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A NUMERICAL METHOD FOR ESTIMATING THE VARIANCE OF AGE AT MAXIMUM GROWTH RATE IN GROWTH MODELS
… the Fels Longitudinal data mention peak height velocity (PHV) as an important outcome measure. The PHV is often derived from growth models such as the triple logistic model fitted to the stature (height) data. The age at PHV is sometimes ordinalized to designate an individual as an early, …
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A biomechanical investigation of contemporary powerlifting training practices and their potential application to athletic development.
… with performance of common sporting tasks. Maximum force production, power, velocity and rate of force development (RFD) were shown to explain a large percentage of variation in performance of tasks such as sprinting, jumping and changing direction (adjusted R2 ranged from 0.43 to 0.86). …
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Methodological and biological studies of the amino acid oxidases.
… of. 17 mmol 1[-1], permitted 84% of the maximum velocity. Neither FAD nor FMN were required in the L-amino acid oxidase (L-amino acid: oxygen oxidoreductase (deaminating) EC 1 .4.3.2.) assay which utilized L-leucine as substrate (Km 0.6 mmol 1 ) at a concentration of 3.3 mmol 1[-1]. This …
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The fast-start swimming of angelfish, Pterophyllum eimekei
… stage 1 for DB, -21.9: p<0.0005), and different maximum angular velocity in the direction opposite to the initial one (SB -8.08 rad/s; DB -56.62 rad/s: p<0.001). There are no significant differences in stage 1 kinematics. Stage 1 turning angle is linearly correlated to stage 2 turning angle for …
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Flight Testing Small, Electric Powered Unmanned Aerial Vehicles
… to find the following performance parameters; maximum velocity, minimum velocity, velocity for maximum range, velocity for maximum endurance, maximum rate of climb, maximum climb angle, minimum turn radius, maximum turn rate, and maximum bank angle. Applications in UAV control and mission …
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Content and Activity of Cytochrome P450 3A in Rat Brain Microsomes and Mitochondria
… brain mitochondria had 2.5-fold higher maximum velocity and 5-fold higher MM constant compared to microsomes. For 1’-hydroxymidazolam, mitochondria had 9-fold higher maximum velocity and 153-fold higher MM constant compared to microsomes. Consistent with the higher Vmax of the …
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Swimming in four goldfish (Carassius auratus) morphotypes: understanding functional design and performance through artificial selection
… rate), fast-start performance (average and maximum velocity and acceleration), stability in yaw and roll and propulsive muscle ultrastructural characteristics (mitochondrial volume density and spacing, myofibril diameter and capillary to fibre ratio in red and white muscle) were measured for …
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Visualization and velocity measurement of unsteady flow in a gas generator using cold-flow technique
… for flow visualization and measurement of axial velocity at different frequencies ranging from 4 Hz to 12 Hz. Flow visualization showed that the incoming flow was a complex jet flow conformed to a cylindrical enclosure, while the outgoing flow resembled the venting of a pressurized vessel. The …
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Experimental and Numerical Study of Air Flows in a Full Scale Room
… 19.5 ACH. This was demonstrated by use of the maximum velocities decaying along the ceiling and the floor, flow topologies (including flow patterns, separation and reattachment points, positions of vortices, etc.), vorticity and turbulent kinetic energy spatial distributions. In addition, the …
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Formulation of a full dynamic transport model for heterojunction devices
… and Poisson's Equation. In our model carrier velocity and electron energy are taken as variables and have been found using electron concentration and electrostatic potential; It has been found that by increasing the doping from 10{dollar}\sp{16}cm\sp{-3}{dollar} to 5 {dollar}\times{dollar} …
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