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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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Study of Different Formulations for the Multiperiod Blending Problem Applied to Lithium Recovery from Produced Water
We present several formulations to solve the MPBP for the recovery of REE/CMs from produced water and propose a decomposition approach thatleverages strategies in general disjunctive programming to enhance its performance. We compare these proposed formulations/strategies via two illustrative case studies on recovering lithium from a network of produced water sources.
Applications of synchrotron [mu]-XRF to study the distribution of biologically important elements in different environmental matrices: A review
Abstract not provided
NDVI derived from near-infrared-enabled digital cameras: Applicability across different plant functional types
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Structural and catalytic differences in the effect of Co and Mo as promoters for Pt-based aqueous phase reforming catalysts
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Efficiency of light harvesting in a photosynthetic bacterium adapted to different levels of light
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Time-resolved FTIR difference spectroscopy for the study of quinones in the A1 binding site in photosystem I: Identification of neutral state quinone bands
Not provided.
Different reaction sequences for partial oxidation of propane over different ceria-supported catalysts
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Characterization and catalytic behavior of Fischer-Tropsch catalysts derived from different cobalt precursors
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Mineral formation during bacterial sulfate reduction in the presence of different electron donors and carbon sources
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Uranium fate in wetland mesocosms: Effects of plants at two iron loadings with different pH values
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Chemical expansion affected oxygen vacancy stability in different oxide structures from first principles calculations
We study the chemical expansion for neutral and charged oxygen vacancies in fluorite, rocksalt, perovskite and pyrochlores materials using first principles calculations. We show that the neutral oxygen vacancy leads to lattice expansion whereas the charged vacancy leads to lattice contraction. In addition, we show that there is a window of strain within which an oxygen vacancy is stable; beyond that range, the vacancy can become unstable. Using CeO2|ZrO2 interface structure as an example, we show that the concentration of oxygen vacancies can be manipulated via strain, and the vacancies can be preferentially stabilized. These results could serve as guiding principles in predicting oxygen vacancy stability in strained systems and in the design of vacancy stabilized materials.
Techno-economic evaluation of different hybridization schemes for a solar thermal/gas power plant
Not provided.