this article addresses the interplay between heat of hydration and physico-mechanical properties of calcium sulfate hemi-hydrate in the presence of retarding additives such as citric and malic acids and sodium citrate. the heat of hydration was measured using a semi-isothermal calorimeter. results proved that citric and malic acids had superior impact on hydration and mechanical properties. whi...

BACKGROUND Family physicians frequently order and in some instances supervise diagnostic tests using intravascular radiographic contrast media. METHODS MEDLINE database was searched from 1966 to the present using the key terms "contrast media," "adverse reaction," "anaphylaxis," "anaphylactoid," "nephropathy," "renal failure," "kidney failure," and "MRI" in combinations. Other sources were fo...

The chemical compositions of the aqueous phases in alkali-activated slag (AAS) paste and Portland cement (PC) were determined up to 28 d with aim obtaining a better understanding stability hydration products two binder systems. saturation levels respect PC AAS obtained by thermodynamic modelling. main findings this study were: effective index for portlandite system was always below zero sulfate...

conclusions the administration of dextrose saline was associated with a shortened active phase and second stage of labor in vaginally delivered nulliparous women. results of 174 objects enrolled, 150 women delivered vaginally and completed the study. there was a significant difference in the duration of active phase between the groups (ns: 270.20 ± 13.37 minutes; d5ns: 206.67 ± 11.72 minutes) (...

Abstract: There have been lots of studies to control the poor hydration resistance of dolomite refractories one of themost effective solutions has been the addition of magnesia to doloma. Using a co-clinker of magnesia-doloma as astarting material would provide more homogeneity in the properties of the product and has been published recently.On the other hand, addition of iron oxide to doloma h...

abstract physiologists have shown that increased fluids improve skeletal muscle performance in prolonged exercise. typical orders provide for 125 ml of intravenous fluids per hour in patients taking limited oral fluids during labor. our purpose in this study was to determine whether increased intravenous fluids affect the progress oflabor. in a prospective randomized institutional clinical tria...

Abstract The hydration of nitriles is an important transformation because the resulting primary amides present a huge number applications in synthetic organic chemistry, as well industrial and pharmaceutical interest. Metallic compounds (complexes, oxides, nanoparticles) are known to catalyze by activating nitrile substrate, water molecule, or both partners, upon coordination. In this Minirevie...