Results 11 to 20 of about 729,379 (251)
Investigation of the surface charge behaviour of ettringite: Influence of pH, calcium, and sulphate ions [PDF]
HeliyonEttringite is an important mineral that contributes to the overall performance of cementitious materials. Knowledge of the surface charge behaviour of a solid is necessary for a mechanistic description of surface processes such as adsorption or particle ...
Tiziana Missana +4 more
doaj +2 more sources
, 2022 One-part geopolymers attract wide interests due to their much lower CO2 emissions and similar practice as ordinary Portland cements (OPC), that is “just add water”, instead of mixing alkaline solution with precursors.
Zhang, Zuhua +5 more
core +1 more source
Calcium and sulphur distribution in fired clay brick in the presence of a black reduction core using micro X-ray fluorescence mapping [PDF]
, 2011 A new finding of the observation of an elemental gradient or zoning of calcium and sulphur in fired brick bodies is described, that does not appear to have been reported in the literature before.
L. Gredmaier +5 more
core +1 more source
The electrical properties of calcium sulphate rocks from decametric to micrometric scale [PDF]
, 2020 Sulphate rocks have a sedimentary evaporitic origin and are present in many deposits worldwide. Among them, gypsum (dihydrated calcium sulphate) is the most common and is exploited for industrial purposes. Anhydrite (calcium sulphate) is frequently found
Playà i Pous, Elisabet +4 more
core +1 more source
Acta Pharmaceutica, 2014 Ciprofloxacin bioavailability may be reduced when ciprofloxacin is co-administered with metallic ion containing preparations. In our previous study, physicochemical interaction between ciprofloxacin and ferrous sulphate was successfully simulated in ...
Stojković Aleksandra +5 more
doaj +1 more source
EFFECT OF FOLIAR SPRAY WITH SOME FERTILIZERS AND CHEMICALS ON VEGETATIVE GROWTH , YIELD AND ITS RELATION TO POWDERY MILDEW DISEASE OF SQUASH PLANTS CAUSED BY Erysiphe cichoracearum [PDF]
Journal of Plant Production, 2007 In order to save the Egyption ecosystem from pollution with pesticides, under laboratory conditions . application of potassin (P) , mixed with (N + P + K) , potassium sulphate and potassin (N) at 800 ppm in vitro decreased conidia germination and length
A. El-Kafrawy, R. El-Shabrawy
doaj +1 more source
Studies in the system calcium sulphate–water
, 1971 The dehydration reactions of the calcium sulphate hydrates have been studied at temperatures in the range 68-217 °C and under partial pressures of water vapour in the range 10-5 - 360mm of Hg.
Leslie S. Norwood (7166513)
core +6 more sources
Materiales de Construccion, 1985 This study, first part of a work where an account of the evolution of the mechanical resistances of various series of mortar and concrete tests submitted to the action of different agressive solutions will be given, sets up the chemical resistant ...
Demetrio Gaspar-Tébar +2 more
doaj +1 more source
Effect of Phosphatic and Nitrogenous Fertilizers on Yield of Field Beam (Vicia faba var. minor L.)
Madras Agricultural Journal, 1976 A significant increase in the yield of straw, pods and seeds of field bean was obtained with the application of 150 kg/fed. as calcium superphosphate. The application of 25 and 50 kg/fed, as ammonium sulphate increased the yield equally.
A. H. ZEYADA
doaj +1 more source
Energies, 2022 The article presents the hydrographic and hydrochemical characteristics of post-exploitation reservoirs formed in peat excavations. Two natural bog lakes were selected as the control objects for the study.
Tadeusz Molenda +5 more
doaj +1 more source