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 72 for “"constant-load"”.
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Neuromuscular Fatigue and Biomechanical Alterations during High-Intensity, Constant-Load Cycling
… to reach task failure during high-intensity, constant-load cycling. In conclusion, the findings presented in this thesis indicate that the temporal patterns of central and peripheral neuromuscular fatigue differ (Study 1; Chapter 3). Task failure during high intensity cycling appears to be …
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Pulmonary function and acid-base balance high intensity constant-load exercise
… on pulmonary function during high intensity constant-load exercise. Furthermore, many studies have examined only one part of the pulmonary system during exercise and some have not included blood gas measurements as a measure of the adequacy of pulmonary function. The studies reported in this …
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Cracking of zirconium alloys at constant load with and without applied potentials
… temperature and 90°C. For SCC testing, constant load and slow-strain-rate techniques were used. Some SCC testing were also performed under controlled electrochemical potentials (Econt). The localized corrosion behavior was studied by cyclic potentiodynamic polarization technique. …
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Effects of chronic suboptimal energy intake on constant-load exercise in young women
… of energy below recommended levels on constant-load exercise was studied in women age 19-24 years. Ten controls (average caloric intake ~ 35 kcal/kg body weight) and 10 subjects with suboptimal energy intake (average caloric intake - 25 kcal/kg body weight) were matched for age, …
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Investigation of indentation derived creep response using constant load and constant strain rate methods
… Indentation derived creep response using constant load-hold and constant indentation strain rate methods were investigated through systematic numerical finite element analysis of conical indentation. The model system of pure tin (Sn) and Sn-based alloy with known uniaxial power-law creep …
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AN EVALUATION OF LACTATE AND RESPIRATORY RESPONSES TO INCREMENTAL AND CONSTANT LOAD WORK BOUTS.
… subjects participated in two incremental work load (IWL) and four constant work load (CWL) tests that consisted of horizontal treadmill running at different speeds. The IWL tests elicited linear increases in VO₂ and were highly correlated for both Group 1 (r = .986) and Group 2 (r = .999). …
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Physiological and Metabolic Responses to Constant-Load Exercise on an Inclined Stepper and Treadmill
… inclined stepper by StairMasterTM (SM) during constant-load exercise. The slow component of VO2 (SC) was a central variable assessed during exercise. Twenty-two healthy college-aged (18-30) subjects completed an incremental TM and SM exercise test to establish a workload equivalent to 70% …
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Determining optimal load for a constant-load cycle ergometer test relative to isotonic leg strength
… 363±15, 413±19, 465±19, 520±21, and 460±41 for loads 6 to 10 % 1RM respectively. Similar results were reported for AP. The differences in PP for loads between 8 and 10 % 1RM were statistically different. Results show that PP varies based on loads of % 1RM and the optimal range is between 8 and …
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Creep Rupture Properties of Tin Tested at Constant Stress
… of a simple, relatively pure, material at constant stress as compared to that tested at constant load. Tin was selected for the investigation. A series of creep tests were run to rupture at constant stress and constant load. The test variables were adjusted in these tests so that time to …
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Effect of Creatine Supplementation on Wrist Flexion Work and Power after Immobilization
… to fatigue followed by a 4.8 min rest. Then constant-load exercise (CL1) was performed with the peak weight achieved in the incremental protocol for 2.4 min, followed by another 4.8 min rest. The second constant-load exercise bout (CL2) used the same weight as CL1 for a final 2.4 min …
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A simulator study of the horizontal landing characteristics and piloting techniques for manned re-entry gliders
… of a steady glide final approach, a nearly constant load factor flare maneuver, and a 15 to 20 second shallow angle, final glide was the preferred technique. The vehicle parameters found to be most Important were maximum lift to drag ratio and speed for minimum drag. A landing analysis based …
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Voltage collapse prediction for interconnected power systems
… to voltage collapse based on reactive power load demand. The load characteristics are considered in this research. Different voltage dependent loads are proposed in order to be used instead of the constant load model. The effect of induction machine load is considered in this study. The load …
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Physiological and metabolic responses to constant and variable load cycling performance
… In Section A the physiological responses to constant load and steady state exercise are determined. In Section B, the metabolic factors associated with constant and variable load cycling performance are examined.
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Creep-Fatigue Interaction of Notched 304 Stainless Steel Bars
… 304 stainless steel specimens were subjected to constant load creep, cyclic loading with hold-time and fatigue loadings at 650(DEGREES)C to determine the lives, failure modes and to understand creep-fatigue interaction mechanisms. The hold-times are one minute and ten minutes. Double-notch …
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LUBRICATION STUDY OF AN OSCILLATING BEARING
… the regimes of operation of an unidirectionally loaded sleeve bearing. The particular journal studied was a hardened steel member oscillating through 30 , at various loads and speeds in a hardened steel bushing. From the results it was concluded that there were possibly four regimes of operation. …
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Experimental Study on Viscoelastic Properties and Fracture Characteristics in Polymers
… properties of polymers on creep test under constant load;<br />2. To determine the internal friction (loss factor) of polymers under periodic loading condition;<br />3. To determine the delayed time or life time on fracture of the polymer under constant loading ; and<br /> 4. To verify the …
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Effects of creep and shrinkage on the behavior of reinforced concrete gable roof hyperbolic-paraboloids
… in their geometry that develope in response to loads. The special characteristics of concrete, as an aging viscoelastic material, allow the increase of deflections in time under constant load; in addition, concrete shrinks when drying, and consequently, stress redistributions due to geometric …
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Tensile creep of 2024-T3 aluminum-alloy sheet under varying load conditions
… creep strains under conditions of varying loads from data obtained at constant load in the range of interest to the structural designer. A method is presented for computing an equivalent rupture stress for the varied load case using the lite-traction theory and the rupture curve tor …
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The influence of microstructure on the creep properties of 441 ferritic stainless steel
… to design and manufacture two lever-arm type, constant load creep rigs in response to the need for a high quality creep test facility. These rigs were to be used to satisfy the initial objective and to evaluate an industry benchmark test used for determining the creep resistance of a particular …
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Tools to study the kinesin mechanome using optical tweezers
… and show traces of WT kinesin walking under constant load. We also purified and tested kinesin mutants running under a force load. We present two assays specifically designed to study the interaction between kinesin and the last 10-18 C-terminal residues of a-p tubulin, the E-hook. We were …
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