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Results for “STRESSES”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Brillouin-Mandelstam spectroscopy of stress-modulated spatially confined spin waves in Ni thin films on piezoelectric substrates
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Cryogenic-temperature-induced phase transformation in a CuZr-based bulk metallic glass composite under tensile stress
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Dynamic stress-strain response of high-energy ball milled aluminium powder compacts
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Exploring stress equivalence for solid solution strengthened Mg alloy polycrystals
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Modeling of fuel-cladding stresses in porous UC/SIC fuel pins
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Thermal preconditioning of membrane stress to control the shapes of ultrathin crystals
A 2D phospholipid crystal (dark) grows within a fluid vesicle membrane (light), starting as a small flower shape. While the area of the crystal grows progressively, the flower shape is preserved, a result of tension pre-conditioning.
Warming and elevated CO 2 alter tamarack C fluxes, growth and mortality: evidence for heat stress-related C starvation in the absence of water stress
Climate warming is increasing the frequency of climate-induced tree mortality events. While drought combined with heat is considered the primary cause of this mortality, little is known about whether moderately high temperatures alone can induce mortality, or whether rising CO 2 would prevent mortality at high growth temperatures. In this study, we grew tamarack ( Larix laricina ) under ambient (400 p.p.m.) and elevated (750 p.p.m.) CO 2 concentrations combined with ambient, ambient +4 °C and ambient +8 °C growth temperatures to investigate whether high growth temperatures lead to carbon (C) limitations and mortality. Growth at +8 °C led to 40% mortality in the ambient CO 2 (8TAC) treatment, but no mortality in the elevated CO 2 treatment. Thermal acclimation of respiration led to similar leaf C balances across the warming treatments, despite a lack of photosynthetic acclimation. Photosynthesis was stimulated under elevated CO 2 , increasing seedling growth, but not leaf C concentrations. However, growth and foliar C concentrations were lowest in the +8 °C treatments, even with elevated CO 2 . Dying 8TAC seedlings had lower needle C concentrations and lower ratios of photosynthesis to respiration than healthy 8TAC seedlings, indicating that C limitations were likely the cause of seedling mortality under high growth temperatures.
The Effect of Stress on Pit Morphology and Stress Corrosion Cracking in Type 304 Stainless Steels.
Abstract not provided.
A New Rock Salt Model with Drag Stress and Back Stress Hardening.
Abstract not provided.