Results 31 to 40 of about 375,479 (331)
Carbon and Strontium Abundances of Metal‐poor Stars [PDF]
The Astrophysical Journal, 2007 We present carbon and strontium abundances for 100 metal-poor stars measured from R$\sim $7000 spectra obtained with the Echellette Spectrograph and Imager at the Keck Observatory. Using spectral synthesis of the G-band region, we have derived carbon abundances for stars ranging from [Fe/H]$=-1.3$ to [Fe/H]$=-3.8$.
David K. Lai +3 more
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Journal of Chemistry, 2021 Strontium is a kind of trace element. Groundwater containing strontium is called mineral water when its content reaches a level that is beneficial for human physiology. Some groundwater resources in Shijiazhuang are rich in strontium.
Duo Li +7 more
doaj +1 more source
Microbial formation of crystalline strontium carbonate [PDF]
FEMS Microbiology Letters, 1994 Pseudomonas fluorescens appeared to grow in a mineral medium containing strontium (5 mM) complexed to citrate, the sole source of carbon, without any evident inhibition in cellular yield. Atomic absorption studies showed that the divalent metal was excluded from the cytoplasmic component and was initially found in the supernatant fluid in soluble form ...
Vasu D. Appanna, Shawna Anderson
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Mechanism of Enhanced Strontium Uptake into Calcite via an Amorphous Calcium Carbonate Crystallization Pathway [PDF]
, 2017 Calcite formation via an amorphous calcium carbonate (ACC) precursor phase potentially offers a method for enhanced incorporation of incompatible trace metals, including Sr2+. In batch crystallization experiments where CaCl2 was rapidly mixed with Na2CO3
Janice L. Littlewood +5 more
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Mechanisms of carbon dioxide reduction on strontium titanate perovskites [PDF]
Journal of Materials Chemistry A, 2020 A detailed atomistic knowledge of the photocatalytic reduction of CO2 to CO on SrTiO3 perovskites has allowed to suggest a doping approach which increases the efficiency of CO2 conversion.
Francesc Viñes +6 more
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Visible Light Responsive Strontium Carbonate Catalyst Derived from Solvothermal Synthesis
Catalysts, 2020 A single crystalline phase of strontium carbonate (SrCO3) was successfully obtained from solvothermal treatments of hydrated strontium hydroxide in ethanol (EtOH) at 100 °C for 2 h, using specific Sr:EtOH mole ratios of 1:18 or 1:23.
Pornnaphat Wichannananon +2 more
semanticscholar +1 more source
Environmental Systems Research, 2023 Potentially toxic elements (PTE) from industrial activities remain a global concern for their environmental hazards. In particular, strontium is found in drinking water and food, primarily from contamination from the nuclear industry, petroleum ...
Phatchani Srikhumsuk +3 more
doaj +1 more source
Surface complexation model for strontium sorption to amorphous silica and goethite
Geochemical Transactions, 2008 Strontium sorption to amorphous silica and goethite was measured as a function of pH and dissolved strontium and carbonate concentrations at 25°C. Strontium sorption gradually increases from 0 to 100% from pH 6 to 10 for both phases and requires multiple
Criscenti Louise J +3 more
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Preparation of strontium hexaferrite magnets from celestite and blue dust by mechanochemical route [PDF]
Journal of Mining and Metallurgy. Section B: Metallurgy, 2008 In the present investigation celestite (natural ore of strontium) and blue dust (iron ore fines) have been used for the preparation of strontium hexaferrite powder. The mechanical alloying process has been adopted to prepare strontium hexaferrite powder.
Tiwary R.K., Narayan S.P., Pandey O.P.
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Removal of Soluble Strontium via Incorporation into Biogenic Carbonate Minerals by Halophilic Bacterium Bacillus sp. Strain TK2d in a Highly Saline Solution [PDF]
Applied and Environmental Microbiology, 2017 Takumi Horiike +6 more
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