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Promising psyllium-based composite containing TiO2 nanoparticles as aspirin-carrier matrix

Progress in Natural Science:Materials International 2014年第3期24卷 205-209页

作者： Marcela-Corina Rosu ioan bratu National Institute for Research and Development of Isotopic and Molecular Technologies

Composite nanomaterials represent a new trend in the biomedical field. Coupling inorganic/organic constituents with non-toxicity/biocompatibility properties leads to develop the new systems having special characteristics that can be used in various bio-applications. This paper describes the preparation and characterization of psyllium-based composites containing TiO2 nanoparticles in order to develop new therapeutic strategies for aspirin drug delivery. The structural characteristics of obtained materials were investigated by FTIR spectroscopy. The UV–vis spectrophotometric analysis was performed to evaluate the aspirin release behavior under different pH conditions at 37 1C. Combining psyllium(as an excellent source of fiber) with TiO2 inorganic unit(as vehicle of aspirin) it was found that polymeric-TiO2networks have promising potential for controlled aspirin release as therapeutic agent.

关键词： Psyllium Titanium dioxide Aspirin In vitro release

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Scientific Investigation of the Paintings from the Agarbiciu (Cluj County) Wooden Church

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Journal of Minerals and Materials Characterization and Engineering 2020年第4期8卷 177-196页

作者： Constantin Măruțoiu ioan bratu Olivia Florena Nemeș Dan Nemeș Călin Neamțu Zaharie Moldovan Teofil Tia Ilina Udrea Cristian Tigae Faculty of Orthodox Theology Babes-Bolyai University Cluj-Napoca Romania National Institute for R & D of Isotopic and Molecular Technologies Cluj-Napoca Romania Technical University of Cluj-Napoca Cluj-Napoca Romania Faculty of Chemistry and Chemical Engineering Babes-Bolyai University Cluj-Napoca Romania Department of Chemistry University of Craiova Craiova Romania

The investigation of the painting materials (pigments, binders and varnish) of Agarbiciu wooden church painted walls was done by employing both nondestructive (XRF and reflection FTIR spectroscopy for pigments) and destructive methods (FTIR spectroscopy and GC-MS spectrometry for pigments and binders). The digital restoration of the interior of the wooden church was done using the physical-chemical composition of the painting layer, a metadata set that describes the timeline, detailed photographic documentation and the 3D scanned interior of the church.

关键词： XRF Non-Destructive Analyses Non-Destructive FTIR Reflectance Analysis GC-MS Coupling Digital Conservation

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