Titanium carbide is used as an attractive reinforcement to produce particulate metal matrix composites. One of the problems to use this carbide as a reinforcement in copper-based composites is the lack of wetability in Cu-TiC system. This property improves as the C/Ti ratio in carbide decreases.&#10Problems to use this carbide as a reinforcement in copper-based composites is the lack of wetabii...

In this study, the effects of sodium lauryl sulfate and various amino acids (DL-aspartic acid, dodecanedioic suberic acid) on formation calcium-deficient hydroxyapatite via hydrolysis α-tricalcium phosphate (α-TCP) were investigated; moreover, a combined effect these additives ethylene glycol as synthesis medium was also estimated. The reaction performed in solutions containing different concen...

A new two-component (composite) water sorbent MgSO4/Hydroxyapatite has been developed for sorption-based solar heat storage. The matrix of the composite is a hydroxyapatite (HAP) material with ordered structure, high surface area 111.3 m2/g and mesopore dimensions centered at 45 nm. composites, prepared by wet-impregnation HAP MgSO4, have lower specific similar as matrix. maximum sorption capac...

We used first-principle simulation methods to generate amorphous TiO2 (a-TiO2) models and obtained chemically-ordered amorphous networks. We analyzed the structural and the electronic properties of the resulting computationally generated structures. We propose that two peaks found in the Ti-Ti pair correlation correspond to the edge-sharing and the corner-sharing Ti-Ti pairs. Resulting coordina...

We propose titanium-decorated graphene oxide (Ti-GO) as an ideal sorbent for carbon monoxide (CO) capture and separation from gas mixtures. Based on first-principles calculations, Ti-GO exhibits a large binding energy of ~70 kJ mol(-1) for CO molecules, while the binding energies for other gases, such as N(2), CO(2), and CH(4), are significantly smaller. The gas adsorption properties of Ti-GO a...

We compute the structural energies, elastic constants, and stacking fault energies, and investigate the phase stability of monoborides with different compositions (X1 1−xX 2 x)B (X = Ti/Fe/Mo/Nb/V) using density functional theory in order to search for Ti monoborides with improved mechanical properties. Our computed Young’s modulus and Pugh’s modulus ratio, which correlate with stiffness and to...

BACKGROUND AND PURPOSE Hydroxyapatite ceramic microparticles are newly developed embolic materials. The purpose of this study was to evaluate the characteristics, embolic properties of hydroxyapatite ceramic microparticles, and effects of transcatheter embolization from an angiographic standpoint and to histopathologically evaluate the results of animal experimentation. METHODS After physical...

Bone morphogenetic protein (BMP) is known to require a suitable carrier to induce ectopic bone formation in vivo. Hydroxyapatite ceramics have been reported to be effective in some forms but ineffective in others as a carrier of BMP-induced bone formation. In this study we compare three geometrically different forms of hydroxyapatite to examine their functions as carriers of BMP-induced bone fo...

Conversion of soil Pb to pyromorphite [Pb5(PO4)3Cl] was evaluated by reacting a Pb contaminated soil collected adjacent to a historical smelter with hydroxyapatite [Ca5(PO4)3OH]. In a dialysis experiment where the soil and hydroxyapatite solids were placed in separate dialysis bags suspended in 0.01 M NaNO3 solution a crystalline precipitate, identified as chloropyromorphite, formed on the dial...

The reassociation kinetics of Escherichia coli DNA were measured by S1 nuclease resistance and hydroxyapatite binding. While the reaction assayed by hydroxyapatite displays second order kinetics, the S1 nuclease measurements follow a non-second order from, as previously reported by Morrow (Ph.D. Dissertation, Stanford University. 1974). Much of the reaction measured with S1 nuclease occurs betw...