Abstract: The focus of bone tissue engineering is on the new strategies for developing bioactive and resorbable scaffolds, which have become an alternative to treatment diseases trauma. β-tricalcium phosphate (β-TCP) considered has excellent osteoconductivity. In attempt achieve good densification β-TCP scaffold improve its biological properties, it arises possibility combining this material wi...

This communication presents a progress report on an ongoing project aiming at the computation of complex fluid flows with a realistic constitutive law, which would takes into account the pseudoplastic, viscoelastic and thixotropic behaviour of the materials. The flow solver is based on the LS-STAG method, which is an immersed boundary (IB) method that allows the computation of flows in complex ...

Cellulose/chitosan homogeneous solutions were prepared in 1-ethyl-3methylimidazolium acetate ([EMIM]Ac) ionic liquid. Steady and oscillatory dynamic rheological properties were studied with a Haake Mars-ΙΙΙ rotational rheometer. Rheological results show that cellulose/chitosan [EMIM]Ac solutions are a pseudoplastic liquid, and the viscosity of the solution decreases with increasing of chitosan ...

The culture medium in many fermentations is a non-Newtonian fluid. In bacterial alginate batch production, the broth becomes more pseudoplastic as concentration increases, which impairs mixing process. This work characterizes effect of interaction between changing rheology and impeller on bioreactor fluid dynamics. Experimentally, fermentation with evolving reproduced. Three stages are mimicked...

ABSTRACT: Mayonnaise is probably one of the most widely used sauces worldwide. The oil content of traditionally mayonnaise is more than 65%. Fat has a role in creating viscosity, color and texture but might cause many diseases and disorders in human. In this study the influence of modified wheat bran as a fat replacer on the rheological properties of low fat mayonnaise was studied and compared ...

Poly(lactic acid) (PLA) is one of the most important ecological thermoplastics due to its good mechanical properties. In light this, investigations related effects PLA processing parameters are as they affect final product performance. This work aimed determine viscosity-temperature coefficient (?) and pseudoplastic index (n) estimate degradation rate during using an internal mixer. The viscosi...

Simulation of convective heat and mass transfer in systems filled with pseudoplastic fluids deals computational difficulties due to the appearance an infinite level effective viscosity as intensity deformation rates tends zero. To solve this problem, various regularization models are used by introducing a small additional term into expression for viscosity. The present research is devoted analy...

The micro-scale joining of two different materials using two-component micro-powder injection molding (2C-µPIM) is an intriguing technique. formation defects in bi-materials at processing stages makes this technique challenging. This study presents the fabrication defect-free bi-material micro-parts containing hydroxyapatite (HA) and 3 mol% yttria-stabilized zirconia (3YSZ) via 2C-µPIM. Critica...

This study proposed a drug delivery system based on a series of formulations with chitosan gels, designed for local, intra-pocket treatment of periodontal disease, containing two drugs (an antibiotic and a chimiotherapeutic-antimicrobian agent: tetracycline hydrochloride (T) and metronidazole benzoate (M), respectively. The formulations varied from the chitosan concentration (3-4%), and the dru...