The mixing solution of wollastonite-based brushite cement is a phosphoric acid containing metallic cations and borax. This work complements previous study devoted to the influence H3PO4 concentration, Ca/P liquid-to-solid (l/s) ratios on setting hardening process binder by providing new insight into role aluminum boron. Boron retards decreases heat released during process. It also contributes r...

Local drug delivery systems are an effective approach in the treatment of purulent–septic inflammation bone tissue. Chemically bonded multiphase ceramics based on calcium-deficient carbonate-substituted hydroxyapatite combine resorbability, osteoconductivity, and possibility volumetric incorporation antibiotics. Macroporosity is regulated by concentration polyethylene glycol granules introduced...

A commercial SiO2 modified by the addition of a TiO2 layer on its surface and pore walls offers support for metallocene-based ethylene polymerization catalysts with 35% improved catalytic activity. The effect such modification catalyst particle fragmentation during reactions were assessed. This was performed exposing internal cross-section several Ti/SiO2-based metallocene particles, polymerize...

Introducing hierarchical porosity to zeolites is vital for providing molecular access microporous domains. Yet, the dynamics of meso- and macropore formation has remained elusive pore space ill-characterized by a lack (in situ) microscopic tools sensitive nanoporosity. Here, we probe within zeolite ZSM-5 crystal in real-time situ fluorescence microscopy during desilication. In addition, introdu...

The objective of this study was to evaluate the physical-hydrological and chemical properties organic carbon stock soil under intercropped conilon coffee (Coffea canephora P.) in full sun coastal tablelands Espírito Santo, Brazil. treatments evaluated were with rubber tree (CR) (FS) area 1; papaya (CP) 2; coconut (CC), (FS), an ​​native vegetation (NV) 3. physical its stocks measured layers 0-0...

Introduction Carbon aerogel (CA) is a most promising material as an electrode for electrical double-layer capacitor (EDLC), as it allows an interconnected three-dimensional network structure, a high specific surface area, good electrical conductivity and a suitable pore size distribution for common electrolytes. Moreno-Castilla et al. [1] prepared titania/carbon composite by the sol-gel method,...

Structural hierarchy, porosity, and isotropy/anisotropy are highly relevant factors for mechanical properties and thereby the functionality of porous materials. However, even though anisotropic and hierarchically organized, porous materials are well known in nature, such as bone or wood, producing the synthetic counterparts in the laboratory is difficult. We report for the first time a straight...

This study focused on the degradation properties of gelatin microparticles incorporated in calcium phosphate (CaP) cement and the subsequent effect of these composites on bone formation. Positively charged alkaline gelatin (type A) microparticles or negatively charged acidic gelatin (type B) microparticles were incorporated in CaP cement, which was implanted in critical-sized cranial defect in ...