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Results for “Age”
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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Statistical evaluation comparing strength of new and aged nuclear grade HEPA filters
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Time- and Feedback-Dependent DLO Phenomena in Oxidative Polymer Aging
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The effect of water sorption on the calorimetric signature of aging in DGEBA epoxies
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New insight: Nitrosation of n-phenyl-β-naphthylamine in the early stage of nitroplasticizer aging
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Recent progress in aging studies of a eutectic mixture of bis(2,2-dinitropropyl) acetal and formal nitroplasticizer
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Experimental investigation on aging treatment of 7050 alloy assisted by electric pulse
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Structural biology in the age of X-ray free-electron lasers and exascale computing
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Crystallographic contributions to grain boundary cracking in an age-hardened copper alloy
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Case study: Targeted RNA-sequencing of aged formalin-fixed paraffin-embedded samples for understanding chemical mode of action
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Polypharmacy-associated risk of hospitalisation among people ageing with and without HIV: an observational study
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Cryo-EM of Li Metal Battery Aging and Failure Mechanisms.
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Simplified Method for the In Situ Collection and Laboratory Analysis of Cosmogenic Tracers (Sulfur-35 and Sodium-22) to Determine Residence Time Distributions and Water Ages
The use of cosmogenically produced sulfur-35 (T 1/2 = 87 days) and sodium-22 (T 1/2 = 2.6 years) as intrinsic tracers can provide valuable information on catchment hydrology, flow paths, and subsurface storage. A new and straightforward method was created to determine the activities of both 35 S and 22 Na in various water sources by pumping large volumes (up to 1000 L) of water through cation- and anion-exchange resin columns in the field to collect sodium and sulfate ions and simple chemistry in the lab. Samples are counted for 35 S using liquid scintillation counting (LSC) and for 22 Na via γ spectroscopy. Our novel in situ method provides faster sample throughput as well as better counting statistics and lower detection limits. Both methods were successfully applied at the Southern Sierra Critical Zone Observatory.