The aim of this study was to obtain a composite material which not only has suitable workability but also has excellent degradability. A novel injectable and degradable bone cement consisting of a mixture of calcium phosphate (α-tricalcium phosphate; α-TCP) and calcium sulfate dihydrate (CaSO4. 2H2O; CSD) powders as the solid phase and an aqueous solution containing 2.5 weight percent of Na2HPO...

In the present study, a total of sixty groundwater samples, twenty each for pre-monsoon, monsoon and post seasons 2018, were collected from selected locations in Mewat district Haryana, India. Electrical conductivity (EC) was measured at site dissolved solids (TDS) estimated. Samples analysed anions (chloride, sulphate, bicarbonate) cations (calcium, potassium, magnesium, sodium). Multiple regr...

Substrates of container-grown plants are commonly pre-plant amended with sulfated micronutrients to supply micronutrients. However, the cause for the resulting increase in growth may be due to micronutrient addition or to other factors, such as S addition or substrate acidification. Container-grown pin oak (Quercus palustris Münchh) and Japanese maple (Acer palmatum Thunb.) seedlings were grown...

The ability of gypsum, a common sulfate mineral, to host arsenic atoms in its crystalline structure, is demonstrated through experimental structural studies of the solid solutions formed upon synthetic coprecipitation of gypsum (CaSO4 x 2 H2O) and arsenic. Neutron and X-ray diffraction methods show an enlargement of the gypsum unit cell proportional to the concentration of arsenic in the solids...

This work studies the effect of water content on the aging of APC residues, with a liquid to solid ratio (L/S) of 0.25 or 10, aged with or without exposure to ambient air. After the residue was mixed with water, CaSO4 and (Na,K)Al3(SO4)2(OH)6 in the raw sample yielded ettringite. When CO2 were available, this ettringite was further transformed to gypsum, calcite and possibly gibbsite. Experimen...

The article deals with the effect of potassium sulfates on setting behavior cement pastes. It has been established that main elements (Ca, Si, Al) are distributed in composition clinker minerals, while K and S atoms concentrated locally pores formation arcanite. is shown interaction K2SO4 CaSO42H2O followed by syngenite K2Ca(SO4)2H2O causes destructive phenomena