Enhancement of bone mineral density and body mass in newborn chickens by in ovo injection of ionic-hydroxyapatite nanoparticles of bacterial origin.

Using non-drug, non-surgical treatments for improving bone mineral diseases in newborn babies is an important topic for neonatologists. The present study introduces bacterial synthesized ionic nano-hydroxyapatite (Bio-HA) for the development of bone mineral density in the chicken embryo model. In vitro cytotoxicity analyses were demonstrated the optimal concentrations of Bio-HA compared to a chemically-synthesized hydroxyapatite (Ch-HA).

Tunable self-assembly of cellulose nanowhiskers and polyvinyl alcohol chains induced by surface tension torque.

This article focuses on the formation of the surface tension torque (STT) phenomenon close to the dry-line boundary layer during evaporation of the liquid phase of a solution casted shape-anisotropic nanoparticle suspension (here, cellulose nanowhisker (CNW)) or dissolved polymer (here, polyvinyl alcohol (PVA)) and its effects on self-assembly of the cellulose nanocrystals and polymer chains. The results confirm that the STT tends to align both the CNWs and the PVA chains tangential to the dry-line boundary layer. By careful control of the advancement of the dry-line, achieving special linear and curved patterns of both the CNWs and the PVA chains proportional to the mold position and geometry is possible.