Results 21 to 30 of about 54,813 (368)

Preparation of nano-structured strontium carbonate from Dasht-e kavir celestite ore via mechanochemical method [PDF]

Journal of Ultrafine Grained and Nanostructured Materials, 2018
Strontium carbonate (SrCO3) is one of the most important strontium compounds that have been used in a variety of technological and industrial applications.
Erfan Alimohammadi, Saeed Sheibani, Abolghasem Ataie   +2 more
doaj   +1 more source

Toxicological response and bioaccumulation of strontium in Festuca rubra L. (red fescue) and Trifolium pratense L. (red clover) in contaminated soil microcosms

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, Tatyana Peshkur, Joanna C. Renshaw, Charles W. Knapp   +3 more
doaj   +1 more source

Tuning the Magnetic and Electronic Properties of Strontium Titanate by Carbon Doping [PDF]

Front. Phys. 16, 43501 (2021), 2020
The magnetic and electronic properties of strontium titanate with different carbon dopant configurations are explored using first-principles calculations with a generalized gradient approximation (GGA) and the GGA+U approach. Our results show that the structural stability, electronic properties and magnetic properties of C-doped SrTiO3 strongly depend ...
arxiv   +1 more source

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, Umberto Terranova, Umberto Terranova, Umberto Terranova, Nora H. de Leeuw, Nora H. de Leeuw, Francesc Illas   +6 more
openaire   +6 more sources

Silicon and Strontium abundances of very metal-poor stars determined from near-infrared spectra [PDF]

, 2021
Silicon and Strontium are key elements to explore the nucleosynthesis and chemical evolution of the Galaxy by measurements of very metal-poor stars. There are, however, only a few useful spectral lines of these elements in the optical range that are measurable for such low-metallicity stars. Here we report on abundances of these two elements determined
arxiv   +1 more source

Chemostratigraphy of Neoproterozoic carbonates: implications for 'blind dating' [PDF]

, 2001
The delta C-13(carb) and Sr-87/Sr-86 secular variations in Neoproteozoic seawater have been used for the purpose of 'isotope stratigraphy' but there are a number of problems that can preclude its routine use.
Aharon P., Anthony E. Fallick, Anton B. Kuznetsov, Bowring S.A., Brand U., Brasier M.D., Brasier M.D., Brasier M.D., Burns S.J., Calver C.R., Corsetti F.A., Fairchild I.J., Fairchild I.J., Gao G., Gorokhov I.M., Gorokhov I.M., Gorokhov I.M., Grotzinger J.P., Grotzinger J.P., Hoffman P.F., Igor M. Gorokhov, Kaufman A.J., Kennedy M.J., Kirschvink J.L., Knoll A.H., Knoll A.H., Knoll A.H., Kupecz J.A., Kuznetsov A.B., Kuznetsov A.B., Lambert I.B., Magaritz M., McArthur J.M., McArthur J.M., McCulloch M.T., Melezhik V.A., Morton J.P., Ovchinnikova G.V., Pelechaty S.M., Podkovyrov V.N., Pokrovsky B.G., Pokrovsky B.G., Pokrovsky B.G., Saylor B.Z., Semikhatov M.A., Singh U., Smith L.H., Tronnes R.G., Tucker M.E., Tucker M.E., Veizer J., Veizer J., Victor A. Melezhik, Wada S.-I., Walter M.R., Wang Da-Rui   +55 more
core   +1 more source

Kinetics of conversion of celestite to strontium carbonate in solutions containing carbonate, bicarbonate and ammonium ions and dissolved ammonia [PDF]

Journal of the Serbian Chemical Society, 2014
Celestite concentrate (SrSO4) has been converted to SrCO3 in solutions containing CO32-, HCO3- and NH4+ ions and dissolved ammonia. The effects of stirring speed, CO32- ion concentration; temperature and particle size of SrSO4 on the reaction ...
Zoraga Mert, Kahruman Cem
doaj   +1 more source

Report of Investigations No. 141 Hydrogeology of the Edwards Aquifer, Austin Area, Central Texas [PDF]

, 1984
UT ...
Kreiter, Charles W., Senger, Rainer K.
core   +1 more source

The Monterey event in the Mediterranean: A record from shelf sediments of Malta [PDF]

, 1996
Oligo-Miocene carbonate platform and shelf sediments outcropping on the Maltese Islands provide an excellent archive of the paleoceanography of the central Mediterranean.
Jacobs, E, Shields, G, Stille, P, Weissert, H   +3 more
core   +1 more source

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.
doaj   +1 more source