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Articles 31 - 34 of 34
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Silicate-Promoted Phosphorylation Of Glycerol In Non-Aqueous Solvents: A Prebiotically Plausible Route To Organophosphates, Maheen Gull, Brian J. Cafferty, Nicholas V. Hud, Matthew A. Pasek
Silicate-Promoted Phosphorylation Of Glycerol In Non-Aqueous Solvents: A Prebiotically Plausible Route To Organophosphates, Maheen Gull, Brian J. Cafferty, Nicholas V. Hud, Matthew A. Pasek
School of Geosciences Faculty and Staff Publications
Phosphorylation reactions of glycerol were studied using different inorganic phosphates such as sodium phosphate, trimetaphosphate (a condensed phosphate), and struvite. The reactions were carried out in two non-aqueous solvents: formamide and a eutectic solvent consisting of choline-chloride and glycerol in a ratio of 1:2.5. The glycerol reacted in formamide and in the eutectic solvent with phosphate to yield its phosphorylated derivatives in the presence of silicates such as quartz sand and kaolinite clay. The reactions were carried out by heating glycerol with a phosphate source at 85 °C for one week and were analyzed by 31P-nuclear magnetic resonance (NMR) spectroscopy …
Writing In Geology To Reduce Math Anxiety, Victor Ricchezza, H. L. Vacher
Writing In Geology To Reduce Math Anxiety, Victor Ricchezza, H. L. Vacher
School of Geosciences Faculty and Staff Publications
Students in GLY 4866: Computational Geology at the University of South Florida learn to solve mathematical problems in a geologic context. Quantitative literacy – a fundamental set of skills and habits of mind – is essential to geologists in any of a variety of occupations, and this course helps prepare students for those careers.
Based on suggestions from prior interviews with alumni, we introduced a detailed reading and writing assignment into the course for fall 2016. Students submitted a general written statement about how the felt about math, and then read The Math Instinct: Why you're a Mathematical Genius (along …
Evolution Of The Mantle Beneath The Eastern North China Craton During The Cenozoic: Linking Geochemical And Geophysical Observations, Hong-Yan Li, Yi-Gang Xu, Jeffrey G. Ryan, Scott A. Whattam
Evolution Of The Mantle Beneath The Eastern North China Craton During The Cenozoic: Linking Geochemical And Geophysical Observations, Hong-Yan Li, Yi-Gang Xu, Jeffrey G. Ryan, Scott A. Whattam
School of Geosciences Faculty and Staff Publications
Recent discoveries related to the geochemistry of Cenozoic basalts and the geophysics of the deep mantle beneath eastern Eurasia make it possible to place constraints on the relationship between the seismic tomography of subcontinental mantle domains and their geochemical heterogeneities. Basalts with ocean island basalt‐like trace elements erupted during (56–23 Ma) and after (≤23 Ma) rifting of the eastern North China Craton (NCC) show evidence for the mixing of an isotopically depleted source and an EMI (Enriched mantle type I) pyroxenitic mantle. NCC rifting‐stage basalts exhibit anomalously low MgO and Fe2O3T and high SiO2 and Al2O3, as well as low …
The Importance Of Traditional Ecological Knowledge In Agroecological Systems In Peru, Christina R. Saylor, Kamal Alsharif, Hannah Torres
The Importance Of Traditional Ecological Knowledge In Agroecological Systems In Peru, Christina R. Saylor, Kamal Alsharif, Hannah Torres
School of Geosciences Faculty and Staff Publications
This study argues that a critical element in the success of an ecosystem service (ES) approach at any level is the higher qualitative valuation of local traditional ecological knowledge (TEK). As such, the objectives of this research were to illustrate the role of TEK in agroecological systems in Peru and to develop recommendations about this type of knowledge acquisition. The data were gathered using interviews and focus groups with subsistence farmers along with key informant interviews to elicit TEK at local and regional scales in five provinces in the Lake Titicaca region of Puno, Peru. Qualitative analysis revealed dominant themes …