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Geophagic Practices of the Setsing-Phuthaditjhaba Market Vendors in Thabo Mofutsanyane, Free State, South Africa.
Geophagic Soil Colour and Nematode Content in the District of Thabo Mofutsanyane, Free State, South Africa.
Palaeoenvironmental Characterisation Using Clay Mineralogy: A Case Study of the Heelbo hillslope deposit, Free State Province and the Diepdrift hillslope deposit, Limpopo Province, South Africa.
In order to avoid using P2O5 as phosphorylation reagent in phosphorylation reaction, an amphoteric phosphate ester surfactant was synthesized by using polyphosphate acid as phosphorylation reagent. Th...
The deliberate consumption of soil/clay (geophagia) has been going on for centuries and cuts across socio-economic, ethnic, religious and racial divides. In countries with diverse ethnic origins, race...
Abstract: A new method for the prediction of Gibbs free energies of formation for hydrated clay minerals is proposed based on the parameter ΔGO= Mz+(clay) characterizing the oxygen affinity of the cat...
Uranyl minerals form as a result of the oxidation and alteration of uraninite, UO . These uranyl2+xin used nuclear fuels under phases are also important alteration products of the corrosion of UO ox...
Uranyl minerals form as a result of the oxidation and alteration of uraninite, UO . These uranyl in used nuclear fuels under phases are also important alteration products of the corrosion of UO oxi...
This is the first application of Raman spectroscopy to the characterization of the kornerupine group of borosilicate minerals. Raman microprobe spectra were collected from ~100 to ~4000 cm from 13 s...
TheintracrystallinedistributionofMgandFe ontheM1andM2octahedralsitesinhigh-PC2/c (Mg,Fe)SiOclinopyroxenehasbeendeterminedonquenchedsamplesusing FeMo!§ssbauerspectroscopy.Althoughtherecoveredsamplesth...
An improved regression method for the evaluation of standard free energies of formation (ΔG°f) of clay minerals is here proposed in an attempt to remove some of the limitations of the earlier method (...
The oxidation state of structural iron greatly influences the physical-chemical properties of clay minerals, a phenomenon that may have significant implications for pollutant fate in the environment, ...
Abstract: The surface free energy components of clay-organic complexes were determined to assess to what extent an organic adsorbate modified the surface properties of the mineral, insofar as the stab...
Abstract: Contact angles of glycerol and diiodomethane drops were measured on the surface of kaolin pellets covered with different amounts of dodecylamine chloride (DDACl) to as much as one monolayer....

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