Biodegradable calcium carbonate/mesoporous silica/poly(lactic-glycolic acid) microspheres scaffolds with osteogenesis ability for bone regeneration.

Sintered microsphere-based scaffolds provide a porous structure and high-resolution spatial organization control, show great potential for bone regeneration, mainly from biodegradable biomaterials including poly(lactic-glycolic acid) (PLGA). However, acidic monomer regeneration, mainly from biodegradable biomaterials including poly(lactic-glycolic acid) (PLGA). However, acidic monomers generated by PLGA degradation tend to cause tissue inflammation, which is the central issue of PLGA-based bone regeneration scaffolds development.

High performance of boehmite/polyacrylonitrile composite nanofiber membrane for polymer lithium-ion battery.

In this study, a novel boehmite/polyacrylonitrile (BM/PAN) composite nanofiber membrane was prepared using the electrospinning technique. The physical and electrochemical properties of different contents of BM/PAN composite nanofiber membranes were investigated as separators for lithium ion batteries (LIBs). Compared to the commercial polypropylene (PP) separator, the experimental results show that the BM/PAN composite nanofiber separator possesses a unique three-dimensional (3D) interconnected structure and exhibits higher porosity, greater electrolyte up-take, higher thermal stability and better electrochemical performance in a LiCoO/Li cell.

Paradoxical combination of saturable absorption and reverse-saturable absorption in plasmon semiconductor nanocrystals.

In heavily doped semiconductor nanocrystal systems, high-order nonlinearities including third-order nonlinearity and fifth-order nonlinearity can be tailored to manipulate light on the nanoscale due to the semiconductor intrinsic absorption and localized surface plasmon resonances. Here, by exploiting the nonlinear optical properties of broadly infrared plasmons in solution-processed aluminum-doped ZnO nanocrystals (AZO NCs) with a wide band-gap, we demonstrate that the competition between plasma ground-state bleaching (third-order nonlinearity) and three-photon absorption (fifth-order nonlinearity) is responsible for the transition between saturable absorption and reverse saturable absorption. Upon increasing the pump intensity, the third-order nonlinear coefficient decreases from -5.

Efficient acylation of gastrodin by whole-cells in non-aqueous media.

Gastrodin, a bioactive compound extracted from the plant source of Blume, has a wide range of therapeutic effects on central nervous system (CNS) diseases, but suffers from poor brain permeability and short half-life in plasma. In this study, fatty acid esters of gastrodin were successfully synthesized by a whole cell-based biocatalytic method. cells showed different catalytic activities in the organic solvent systems tested.

Correction: Enhanced up-conversion luminescence in transparent glass-ceramic containing KErF:Er nanocrystals and its application in temperature detection.

[This corrects the article DOI: 10.1039/C9RA01945F.].

Enhanced up-conversion luminescence in transparent glass-ceramic containing KErF:Er nanocrystals and its application in temperature detection.

Transparent Er doped glass-ceramics containing KErF:Er nanocrystals were prepared the traditional melt-quenching technique. The micro-structures, optical properties and up-conversion luminescence behaviors of the Er doped glass-ceramics were systemically studied using X-ray diffraction, absorption and up-conversion luminescence spectra. Under the excitation of a laser at 980 nm, the intensity of red emission of the glass-ceramics increases more than 70 times after heat treatment compared with that of the precursor glass ceramic.

Artificial simulation of salivary and gastrointestinal digestion, and fermentation by human fecal microbiota, of polysaccharides from .

salivary and gastrointestinal (GI) digestion and fermentation of polysaccharides extracted from were investigated in this study. Salivary amylase showed no influence on polysaccharides (DAP). The molecular weight of DAP decreased dramatically during the first 0.

Highly efficient synthesis of arbutin esters catalyzed by whole cells of .

Acylation modification of phenol glycosides is currently of great interest due to the improved bioavailability and multiple functions. In this work, mono- or diesters of arbutin, an important phenol glycoside derivative, can be controllably synthesized by using whole-cell biocatalytic systems. Among fourteen microbial strains selected, cells showed the best catalytic activity and high organic solvent tolerance.

Establishment of a highly efficient flame-retardant system for rigid polyurethane foams based on bi-phase flame-retardant actions.

Rigid polyurethane foam (PU), one of the most promising wall insulation materials, exhibits high flammability and fire risk. In this work, PU/EG/HQ composites with highly effective flame retardancy were fabricated by adding two kinds of flame retardants, expandable graphite (EG) and 10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphorylphenanthrene-10-oxide (DOPO-HQ), during the synthesis of polyurethane. Thermal stability and flammability were evaluated using the limiting oxygen index (LOI), thermogravimetric analysis (TGA), UL-94 vertical flame results, and cone colorimeter tests.