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 92 for “"Low Stress"”.
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Measuring low stress bike access to MARTA
Level of Traffic Stress (LTS) is a bicycle quality of service measure originally developed by the Mineta Transportation Institute (MTI) that categorizes road infrastructure into four levels based on amount of traffic stress perceived by a bicyclist. The concept builds on research indicating that …
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Low Stress Mechanical Properties of Hydroentangled Fabrics
… (e. g. shirtings) are still limited. The low stress mechanical properties of fabrics (e. g. bending, extension, shear and recovery from extension) can be used as a measure of the suitability of fabrics to be used in clothing. In respect of the low stress mechanical properties of nonwoven …
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Fabrication of distortion free x-ray masks using low stress tungsten
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1992.
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The behaviour of sand at low stress levels in the simple-shear apparatus
… Buzzard sand (<No.14 and) No.25 BS sieves) at low stress levels 1n the simple shear apparatus is presented and discussed in detail. In a close examination of data from the Mark 6 simple shear apparatus built by Bassett (1967) and modified by Cole (1967), significant nonuniformities are shown to …
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Flexural Strength and Fracture Toughness of Flowable Composites Containing Low Stress Monomers and Microcapsules
… failure rates of composite restorations are low, though most of these failures are due to recurrent caries, fractures of the tooth structure or restorative materials. Volumetric shrinkage has received significant attention because of the role it plays in recurrent decay. In this study, low …
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Low-stress multiwire stringing and cell interconnection for thin silicon solar cells and modules
… wire at each cell interconnection, followed by precise removal of small sections of wire to create the series interconnect. A major benefit of the cross-connect wire is its ability to deform during thermal cycling of the module. The discrete sets of multiwire allow the top and bottom …
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DC magnetron reactive sputtering of low stress AlN piezoelectric thin films for MEMS application
… for MEMS use because it can be deposited at low temperatures, is easily patterned using conventional photolithographic techniques, and is compatible with CMOS contaminant requirements for silicon IC foundries. In this work, AIN thin films were deposited on silicon for use in a MEMS ultrasonic …
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The Effects of Low Stress Cattle Handling and Weaning Training on Post-Weaning Weight Gain and Calf Activity
… of this study was to assess the effect of low stress (LS) handling of beef calves on weight gain and calf activity associated with the weaning process. Cattle were of Angus and Angus cross breeding from two separate herds in Virginia. Handlers for the LS groups went through a short training …
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Effect of boundary conditions on the damping characteristics of a randomly excited cast nickel-aluminum bronze specimen at low stress levels.
This research examines how various specimen support arrangements affect a material's damping characteristics. The 74 lb. sample studied is cast nickel-aluminum bronze and measures 19.8 x 13.65 x 1 inches. Using previously documented Naval Postgraduate School research, desired random vibration …
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Psychological pathways influencing body fat changes among restrained eaters: Stress, eating and exercise behaviors
… (energy expenditure) as explanations of stress-induced body fat gain of high restrained eaters (dieters), a group identified as being vulnerable to obesity. Participants were female high restrained eaters and low restrained eaters with a mean age of 19.19 years (SD = 0.67). Stress, body …
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Predicting performance using galvanic skin response
… predict worker performance on a task under stressful and potentially high risk conditions. Here we show that the biological signal known as galvanic skin response (GSR) allows such a prediction. We conduct an experiment where subjects answer arithmetic questions under low and high stress …
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Post sheer stress flow of flowable composites containing microcapsules
… upon base liners and current state of the art flowable composites. Secondary caries are the main reason for restoration replacement. Secondary caries often occur as a result of the composite developing microcracks after a filling. Microcracks are often due to stress from shrinkage during …
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Quasi-Static and Fatigue Evaluation of Pultruded Vinyl Ester/E-Glass Composites
… when tested along the pultrusion axis and as low as 1.29% transverse to the pultrusion axis. Fatigue evaluation, in load control mode, evaluated laminate S-N, stiffness reduction, and residual strength. Measured S-N curves and residual strength curves compared with literature were found most …
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Creep, fatigue, and environmental response of Alloy 800H tested at 900 degrees C
… notch acuities were chosen so that the effect of stress intensity on the rupture lifetimes could be examined. The effect of oxidation on the creep rupture lifetimes has also been examined using reduced section modelling and vacuum testing of pre-oxidized specimens. Tests in oxidizing environments …
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An Experimentally Generated Constitutive Model for Peak Stress (σ_peak) in Compression Samples
… and 1000°C. The tests show that a lower working temperature and lower true strain value results in a greater maximum compressive force. The apparent activation energy <em>Q<sub>app</sub></em> was calculated by using the Zener-Hollomon parameter combined with the low stress law. …
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Nanostructural, Surface Morphological Evolution, and Physical Properties of Sodium Chloride-Structure Titanium Nitride and Titanium Cerium Nitride Layers as a Function of Composition
I use a combination of alloying and low-energy ion irradiation during film growth to controllably manipulate the nanostructure of TiN-based layers. Ti0.8Ce0.2N films are grown on oxidized Si(001) at 350°C using UHV reactive magnetron sputter deposition in pure N2. The N+2 to metal ratio …
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Fatigue testing of partial-depth precast concrete bridge deck panels with embedded wire trusses
… structural resistance alongside standard prestressed concrete panels (PCP) to provide formwork across the entire width of a bridge deck. In total, four total specimens were tested for their performance under differing fatigue loading conditions. The specimens were separated into two sets, …
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Réponse au stress et comportements routiers à risque sous l’effet de l’alcool chez de jeunes conducteurs
… in RDBs by our research team has shown that a low response to a stressful task, measurable by cortisol, is linked to a higher number of past convictions for impaired driving in offenders and to future involvement in crashes and near-crashes in young drivers. No study had yet examined the direct …
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