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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"polycarboxylate"”.
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The comparison of tensile strength of polycarboxylate cement among different surfaces of implant custom abutments
… crowns and implant abutments cemented with polycarboxylate cement. Material & Methods A master cast of a maxillary right central incisor single implant restoration from a clinical case was utilized to fabricate five samples of each of five unique abutment types: titanium smooth surface (Ts), …
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A laboratory study of the adhesion of a restorative acrylic resin and a polycarboxylate cement on bovine enamel etched with fifty per cent phosphoric acid
… conventional restorative acrylic resin and a new polycarboxylate cement. The test specimens were subjected to 24 hours, 30 days and six months storage in water and then subjected• to temperature stress cycling and intermittent tensile stress cycling. A tensile test was used to measure the bond …
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Synthesis of staphyloferrin B (SB)-cargo conjugates
… Here, the potential of staphyloferrin B (SB), a polycarboxylate siderophore and virulence factor biosynthesized by S. aureus, for siderophore-drug conjugates is considered. In this thesis, the design and synthesis of a monofunctionalized SB scaffold in which the siderophore is site-electively …
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Bioinspired Catalysts for Phosphoryl Transfer Reactions
… in contrast to Zr promoted DNA hydrolysis where polycarboxylate ligands have been shown to quench strongly the phosphoesterase activity of the metal ion.
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Multi-functional applications of graphene related materials in cementitious composites
… a combination of sonication and the use of a polycarboxylate superplasticiser, were effective in homogenously dispersing the main GRM material, graphene nanoplatelets (GNPs), in cementitious systems. Subsequently, the effect of the GRMs on the early age, mechanical and permeability performance …
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INVESTIGATION ON RHEOLOGY OF CEMENT PASTE AND CONCRETE AT HIGH TEMPERATURE
… were also investigated. Results suggested that polycarboxylate-based superplasticizers should be used at a dosage close to the saturation in order to ensure adequate rheological behaviour at high temperature and prolonged mixing time, while melamine sulfornate- and naphthalene sulfonate-based …
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INVESTIGATION ON RHEOLOGY OF CEMENT PASTE AND CONCRETE AT HIGH TEMPERATURE
… were also investigated. Results suggested that polycarboxylate-based superplasticizers should be used at a dosage close to the saturation in order to ensure adequate rheological behaviour at high temperature and prolonged mixing time, while melamine sulfornate- and naphthalene sulfonate-based …
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Optimisation et performance de bétons autoplaçants économiques à base de différentes combinaisons d'adjuvants et de liants composés
… de diutan gum avec un superplastifiant de type polycarboxylate (PCP) pour l'étude de la robustesse et de la durabilité. D'autre part, nous avons effectué une étude sur l'optimisation de l'utilisation des fillers calcaires (deux types) et d'autres ajouts cimentaires (cendre volante, fumée de …
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Prospective retarders for alkali-activated slag: stability at high alkalinity, effects on setting behavior and strength of paste
… organic in nature such as lignosulfonate-based, polycarboxylate-based and naphthalene formaldehyde-based. Novel retarders were a mixture of inorganic and organic substances selected to achieve specific effects (adsorption, complexation, seeding, etc.) that might affect reaction rate. These novel …
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The performance of a blended PFA/GGBS alkali-activated concrete using a silica fume-based activator
… Influentially, the additional use of the polycarboxylate-based admixture in various dosages showed overwhelming improvements in slump at 2 hours, showing 114.3 and 121.4% corresponding with admixture dosages 1% and 1.5% of the total binder wt. and both exceeding the S4 target. The …