Search results for "palm"

Microrganismi fungini associati al punteruolo rosso delle palme in Sicilia

2009

Effect of cholesterol on the physical properties of pulmonary surfactant films: Atomic force measurements study

2006

International audience; Atomic force measurements were performed on supported pulmonary surfactant (PS) films to address the effect of cholesterol on the physical properties of lung surfactant films. We recently found that cholesterol in excess of a physiological proportion abolishes surfactant function, and is the reason that surfactant fails to lower the surface tension upon compression. In this study, we investigated how the loss of mechanical stability observed earlier is related to the local mechanical properties of the film by local force measurements. The presence of 20% of cholesterol in bovine lipid extract surfactant (BLES) resulted in a decrease of the observed adhesive interacti…

Metalloporphyrin intercalation in liposome membranes: ESR study

2010

Liposomes characterized by membranes featuring diverse fluidity (liquid-crystalline and/or gel phase), prepared from egg yolk lecithin (EYL) and dipalmitoylphosphatidylcholine (DPPC), were doped with selected metalloporphyrins and the time-related structural and dynamic changes within the lipid double layer were investigated. Porphyrin complexes of Mg(II), Mn(III), Fe(III), Co(II), Ni(II), Cu(II), Zn(II), and the metal-free base were embedded into the particular liposome systems and tested for 350 h at 24°C using the electron spin resonance (ESR) spin probe technique. 5-DOXYL, 12-DOXYL, and 16-DOXYL stearic acid methyl ester spin labels were applied to explore the interior of the lipid bila…

Dynamics of surface of lipid membranes: theoretical considerations and the ESR experiment.

2016

The effect of the surface layer of model membranes on their physical properties was discussed in this paper. The research involved a physical ESR experiment with the use of spin probes and computer simulation based on the Monte Carlo technique. Liposomes formed during the process of sonication of lecithin were scanned in an ESR spectrometer. The membrane surface layer model, represented by the system of electric dipoles arranged in rectangular or hexagonal matrices, was studied. The final states of computer simulations were presented as textures. It was found that in the gel phase some ordered domain structures are formed, while in the liquid–crystal phase we got complex textures comprising…

Interfacial behavior of recombinant forms of human pulmonary surfactant protein SP-C.

2012

The behavior at air-liquid interfaces of two recombinant versions of human surfactant protein SP-C has been characterized in comparison with that of native palmitoylated SP-C purified from porcine lungs. Both native and recombinant proteins promoted interfacial adsorption of dipalmitoylphosphatidylcholine bilayers to a limited extent, but catalyzed very rapid formation of films from different lipid mixtures containing both zwitterionic and anionic phospholipids. Once at the interface, the recombinant variants exhibited compression-driven structural transitions, consistent with changes in the orientation of the deacylated N-terminal segment, which were not observed in the native protein. Com…

Scrittura come vendetta. Gli Inferni di Anton Francesco Doni fra realismo allegorico e sintassi manierista

2022

Esito della contaminazione del modello dantesco con innumerevoli altre fonti - dalla letteratura odeporica a quella utopica, dalla prosa religiosa alla poesia burlesca – gli Inferni (1553) di Anton Francesco Doni rappresentano un’opera irriducibile ad un genere predefinito, aperta al gioco intertestuale e all’interazione fra testo e immagini. In una prosa eccentrica e originale, frutto della sua sensibilità manieristica, lo scrittore cinquecentesco ci consegna infatti una potente allegoria della condizione umana, uno specchio rovesciato del mondo come la luna ariostesca, brandendo la penna come una spada per smascherare – tra moralità e ironia – le menzogne della società del tempo.

I CASTELLI DELLE RIVOLTE. DALLA PIANA DI PARTINICO ALLA VALLE DELLO JATO (PALERMO) SULLE TRACCE DEGLI ULTIMI MUSULMANI IN SICILIA OCCIDENTALE

2017

Following the excavations of the "Castellazzo" fortress of Jato, it became necessary to revise the archaeological materials coming from excavation and reconnaissance in all those fortified sites that welcomed the Muslim population during the revolts between the last Norman and Swabian ages. Attention was thus focused on at least two phases in the construction of such fortresses, often simple towers rather than real castles, corresponding to the beginning of the Norman domination and the Federician period.

Morphological and genetic variation of Chamaerops humilis (Arecaceae) in relation to the altitude

2021

The Mediterranean dwarf palm (Chamaerops humilis L.) is native to Western and Central Mediterranean. Since classical times this species has been cultivated and several varieties have been described on material of unknown origins. In this study, plants grown from seeds collected in the wild from seven populations spread along the Mediterranean basin were cultivated under the same environmental conditions, investigated morphologically and genetically by screening the polymorphism of ten SSR loci. Two groups are clearly separated, the populations growing at low altitudes and those living above a thousand meters of altitude. Due to morphological, geographic and environmental isolation, here it …

Kämmensyrjävaimennuksen tuottamat musiikilliset prosessit extreme metal -musiikin muodon artikuloijina

2013

Lipid nanocarriers containing sorafenib inhibit colonies formation in human hepatocarcinoma cells

2015

Here, the potential of two nanostructured lipid carriers (NLC) for controlled release of sorafenib was evaluated. The obtained systems showed characteristics suitable as drug delivery systems for the treatment of hepatocellular carcinoma (HCC) through parenteral administration. The use of a mixture between a solid lipid (tripalmitin) with a liquid lipid (Captex 355 EP/NF or Miglyol 812) to prepare NLC systems could give a higher drug loading capacity and a longer term stability during storage than that obtained by using only solid lipids. The obtained nanoparticles showed a nanometer size and high negative zeta potential values. Scansion electron microscopy (SEM) of the sorafenib loaded NLC…