The cementitious materials under consideration by Caltrans for rigid pavement construction may be classified into four categories: Portland cements and blends, calcium aluminate cements and blends, calcium sulfoaluminate cements, and fly ash-based cements. With the exception of Portland cements, most of the cementitious materials under consideration have not been extensively used for pavement c...

Acetate, by condensation and decarboxylation reactions, is converted to isopentenyl pyrophosphate, which condenses to form Cm terpenol pyrophosphates. These latter compounds condense to yield the initial Ca carotenoid precursor which is presumably phytoene. By a series of dehydrogenation, cyclization, isomerization, and hydration reactions, various acyclic and alicyclic carotenoids are formed. ...

Introduction: Metakaolin (MK) is used as supplementary cementitious material to reduce the CO 2 footprint of Portland cements. However, early hydration cement (OPC) often retarded due its use. The present work investigates mechanisms this retardation. Focus laid on interaction MK with main clinker phase C 3 S (Ca SiO 5 , pure form alite) that known govern kinetics OPC. Methods: Hydration reacti...

Background: Cisplatin is an antineoplastic agent used to treat many malignancies; however, the main side effect of cisplatin is nephrotoxicity. The aim of this study was to evaluate the effect of hydration therapy with and without magnesium on prevention of cisplatin-induced nephrotoxicity. Methods: This retrospective study was performed on 46 patients with malignancy who were candidate to rec...

The common cause of cracking in cement paste is shrinkage due to different reasons, such as loss water and chemical reactions. Incorporating limestone fines (LF) a replacement can affect the paste. To examine this effect, five mixes were prepared with 0, 5, 10, 15 20% LF water-to-binder ratio (w/b) 0.45. Four volume stability tests conducted for each paste: chemical, autogenous drying expansion...

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...

abstract eating and drinking are essential for life. there are clinical situations that artificial hydration is necessary. for dying patients artificial hydration looks useless and in many conditions could even be harmful (e.g. pulmonary edema in hypoalbuminemic patients). in our medical culture artificial hydration is a symbol of care to the patient and withholding it, is a very emotive issue,...

In an effort to determine which biological reactions can occur in relation to the water content of seeds, the regulation of lettuce seed dormancy by red and far red light was determined at various hydration levels. Far red light had an inhibiting effect on germination for seeds at all moisture contents from 4 to 32% water. Germination was progressively stimulated by red light as seed hydratio...

Studies have demonstrated the synergism and complexity of ultrasonic (US) treatment biochar (BC) in H2O with dissolved CO2. The objective this study is to elucidate governing mechanistic steps three-phase system by a critical review possible reactions an experimental variables kinetics, which include effects US energy, amplitude CO2 concentration on biochar's properties. Focus placed impacts th...