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The widespread use of classic and newest technologies available on Internet (e.g., emails, social networks, digital repositories) has induced a growing interest on systems able to protect the visual content against malicious manipulations that could be performed during their transmission. One of the main problems addressed in this context is the(More)
This paper presents a video stabilization algorithm based on the extraction and tracking of scale invariant feature transform features through video frames. Implementation of SIFT operator is analyzed and adapted to be used in a feature-based motion estimation algorithm. SIFT features are extracted from video frames and then their trajectory is evaluated to(More)
Purpose. Cytidine-5′-diphosphate choline (CDPc) was encapsulated in long-circulating unilamellar vesicles (SUVs) to improve the drug's biological effectiveness. Methods. SUVs made up of diaplmitoylphosphatidylcholine/diaplmitoylphosphatidylserine/ cholesterol (7:4:7 molar ratio) and 8 mol % of ganglioside GMl were prepared by extrusion through polycarbonate(More)
The increasing use of low cost imaging devices and the innovations in terms of media distribution technologies induce a growing interest on technologies able to protect digital visual media against malicious manipulations of the visual contents. One of the main problems addressed in this research area is the blind detection of traces of forgery on an image(More)
Oxidative stress has been shown to play a major role in the complex pathophysiological processes leading to organ failure during sepsis. The aim of the present research was to evaluate the effect of different melatonin nanoparticle (NP) carriers in an experimental animal model of sepsis. Poly-D,L-lactide-co-glycolide (PLGA [NP-A]) and polyethylene(More)
Topical application of non-steroidal anti-inflammatory drugs on the eye is a common treatment used to contrast the miosis induced by surgical traumas, such as cataract extraction. With the aim of improving the availability of sodium ibuprofen (IBU) at the intraocular level, IBU-loaded polymeric nanoparticle suspensions were made from inert polymer resins(More)
Polymeric nanoparticle suspensions were prepared from Eudragit RS100R and RL100R polymer resins and loaded with flurbiprofen (FLU), with the aim at improving the availability of the drug at an intra-ocular level for the prevention of the myosis induced during extracapsular cataract surgery. Nanosuspensions were prepared by a quasi-emulsion solvent diffusion(More)
The interaction between ofloxacin, as a model drug of the fluoroquinolone class, and biomembranes was examined as the possible initial step in a transmembrane diffusion process. Dipalmitoylphosphatidylcholine was used for the preparation of biomembrane models. The influence of environmental conditions and protonation on molecular physicochemical behavior,(More)
We evaluated comorbidity, hospitalization, and mortality in chronic obstructive pulmonary disease (COPD), with special attention to risk factors for frequent hospitalizations (more than three during the follow-up period), and prognostic factors for death. Two hundred eighty-eight consecutive COPD patients admitted to respiratory medicine wards in four(More)