Search results for "stil"
showing 10 items of 1452 documents
Haemostatic agents on the shear bond strength of self-adhesive resin
2015
Background Dentin surface contaminated with haemostatic agents can interfere with the bonding of self-adhesive resin cement. Therefore the purpose of this study was to evaluate the effect of various haemostatic agents such as Aluminium chloride, Ferric sulphate and Tannic acid on the shear bond strength of self-adhesive resin luting agent. Material and Methods The buccal surfaces of extracted premolars were flattened to expose the dentine. The teeth were then randomly divided into four groups. In Group I Aluminium Chloride was applied on the flattened dentinal surface, in Group II Ferric Sulphate was applied to exposed dentin surface, in Group III tannic acid was applied on to the dentinal …
Due riferimenti di Ammiano Marcellino all'imperatore Giuliano
2018
Si richiamano due riferimenti , nelle Res gestae di Ammiano Marcellino, ad interventi normativi dell'imperatore Giuliano, caratterizzati, entrambi, dall'obiettivo di esprimere in modo chiaro ed inequivoco il disposto legislativo; e si segnala che i due brani attestano, già alla fine del IV secolo, l'esigenza di precisione e di semplificazione del dettato delle leges che sarebbe stato poi perseguito su larga scala da Teodosio II con la sua codificazione.
Sensitivity and Specificity of Reiter Protein Complement-Fixation (RPCF) Test for Syphilis1
1957
D'Alessandro and his co-workers reported on the separation of four different fractions from the Reiter strain of Treponema pallidum (1, 2, 3). This report deals with the thermolabile soluble protein extract of the Reiter treponeme. The antigen employed in this study was prepared by de Bruijn (4) using the technic described by D'Alessandro. The antigen is prepared briefly as follows: The Reiter treponemes are grown in a Brewer thioglycollate medium. After harvesting the washing, the treponemes are subjected to cryolysis. The lysate is dialyzed against increasing concentrations of ammonium sulfate. The precipitate thus obtained is dissolved in a veronal-buffered saline. This solution is dialy…
Determination of titratable acidity and ascorbic acid in fruit juices in continuous-flow systems
1993
Two continuous-flow systems for the determination of titratable acidity and ascrobic acid in fruit juice samples are described. The assemblies permit on-line dialysis of analytes prior to the reaction step, thus improving selectivity and performing sample dilution. Flow systems are built with a channel carrying the donor phase (sample in both determinations) and another channel carrying an acceptor phase, both of them entering the dialyser. The outcoming stream transporting the dialysed sample fills the valve loop, permitting its injection into a carrier stream which continuously passes through the spectrophotometric detector. For the titratable acidity, acceptor phase and carrier are disti…
Rapid assay of resveratrol in red wine by paper spray tandem mass spectrometry and isotope dilution.
2017
A rapid analytical approach for the assay of resveratrol in red wines, based on Paper Spray Mass Spectrometry (PS-MS) and Multiple Reaction Monitoring (MRM) is described. The assay involves the use of the stable isotope dilution method. The analytical parameters calculated analyzing fortified samples confirm the reliability of the proposed approach, with accuracy values about 100%, and LOD and LOQ values calculated at 0.5 and 0.8 μg/mL, respectively. Furthermore, both the recovery, which was quantitative for the analyte, and the reproducibility (RSD%), checked on different days on the same wine, always below 7%, highlighted the consistency of the methodology.
I modelli digitali come strumento per lo studio dell'architettura antica: l'anastilosi virtuale
2017
The contribution concerns the methodology for the reconstructive study of ancient monuments with particular reference to the concept of Virtual Anastylosis. This contribution illustrates the work carried out within the project of the exhibition "Living in Selinunte, from the origins to the Middle Ages", with particular reference to the virtual reconstruction of the North Gate and the FF1 block.
Anna Banti e lo sguardo narrante. Modelli, poetica e stile tra gusto figurativo, autobiografismo e storia.
2011
Anti-Pseudomonas aeruginosa activity of hemlock (Conium maculatum, Apiaceae) essential oil
2018
Conium maculatum is a nitrophilous weed belonging to the Apiaceae family and occurring in hedgerows, pastures, waste ground, along rivers and roadsides. Little is known on the chemistry and bioactivity of other secondary metabolites occurring in the plant. In the present work, we have analysed the chemical composition and antimicrobial activity of the essential oils hydrodistilled from leaves and inflorescenes of C. maculatum growing in Sicily, Italy. The composition of essential oils was achieved by gas chromatography-mass spectrometry (GC-MS) analysis, whereas the inhibitory effects on the growth of two Gram negative strains, namely Escherichia coli and Pseudomonas aeruginosa were assesse…
Resveratrol as a Gene Regulator in the Vasculature
2014
Resveratrol (3,5,4'-trihydroxy-trans-stilbene) possesses multiple protective properties in the vasculature, including anti-oxidative and anti-inflammatory effects and improvement of endothelial function. A substantial part of these effects is attributable to gene expression changes induced by the compound. Resveratrol can activate the NAD-dependent deacetylase sirtuin 1 (SIRT1), leading to deacetylation of SIRT1 target molecules such as NF-kB and forkhead box O (FOXO) transcription factors. The inhibition of NF-kB by resveratrol reduces the expression of inflammation mediators. FOXO factors are implicated in the upregulation of antioxidant enzymes and the endothelial-type nitric oxide synth…