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Mostrando ítems 11461-11470 de 24444
Silicified collagen materials: Modulation of the in vitro and in vivo response
(Elsevier Science, 2019-06)
Collagen derived materials offer distinct advantages over synthetic polymers, considering their natural inherited biocompatibility and mechanical properties. However, because of the extraction procedure, the latter frequently ...
Development and in vitro evaluation of gastroretentive floating tablets of metformin
(Colegio de Farmacéuticos de la Provincia de Buenos Aires, 2017-02)
The objective was to evaluate the in vitro effect of hydrophilic polymers: hydroxypropylmethyl cellulose (HPMC); HPMC K4M, HPMC K15M, carbopol and xanthan gum in the formulation of a gastroretentive floating extended-release ...
Unscented transformation-based filters: Performance comparison analysis for the state estimation in polymerization processes with delayed measurements
(Wiley VCH Verlag, 2011-08-11)
State estimation with delayed measurements is essential to the operation of polymer processes due to the limited availability of reliable online sensors and the unavoidable hold-up time in the acquisition of critical ...
Risedronate transdermal delivery system based on a fumaric copolymer for therapy of osteoporosis
(Elsevier Science, 2017-07)
Transdermal drug delivery system (TDDS) could be seen as alternative to the oral administration which avoids several adverse effects. In this study a novel TDDS for risedronate (RI), a bisphosphonate used for osteoporosis ...
Nanocompounds as Formulating Aids
(CRC Press - Taylor & Francis Group, 2016)
Nanotechnology involves the characterization, fabrication, and/or manipulation of structures, devices,or materials that have, or at least, contain components with at least one dimension that is approximately 1–100 nm long. ...
Polyethylene/Sepiolite Nanocomposites: Structure/Properties/Processing Relationship
(Nova Science Publishers, 2015)
Polyethylene (PE) - sepiolite nanocomposites are very interesting materials because they combine their properties in a synergetic manner. Chemically, sepiolite is a hydrated magnesium silicate with the ideal formula ...
Biodegradable Composites Based on Thermoplastic Starch and Talc Nanoparticles
(Wiley, 2017)
Nowadays, technological interest is focused on a new generation of composite polymers based on biodegradable matrices from renewable raw materials with either organic or mineral fillers. These biocomposites have several ...
Direct 3D Printing of Poly(lactic acid) on Cotton Fibers: Characterization of Materials and Study of Adhesion Properties of the Resulting Composites
(Wiley, 2020-12-16)
The aim of this work is focused on the direct 3D-printing of poly(lactic acid) (PLA) on a cotton textile substrate, and the study of the printing parameters that modify their adhesion. PLA samples are printed by using Fused ...
Correlation between rheological propertiesm and limonene release in pectin gels using an electronic nose
(Elsevier, 2008-07)
Pectin gels at different polymer concentrations were used as matrices for the encapsulation of a volatile flavour (limonene). This provides a useful model system for studying the influence of the matrix viscoelastic ...
Conformational disorder in energy transfer: beyond Förster theory
(Royal Society of Chemistry, 2013-04)
Energy transfer in donor–acceptor chromophore pairs, where the absorption of each species is well separated while donor emission and acceptor absorption overlap, can be understood through a Förster resonance energy transfer ...