Search results for "FILM"

Pull-off adhesion of hybrid glass-steel adhesive joints in salt fog environment

2016

The aim of this paper was to evaluate the durability behaviour of glass/steel adhesive joints exposed to salt fog environmental conditions for ten weeks, according to ASTM B117 standard. To this scope, pull-off mechanical tests were carried out in order to evaluate the performances evolution and damage phenomena of the adhesive joints during the ageing exposition. Two different types of adhesives were compared (i.e. epoxy and polyurethane ones). Moreover, the effects of the glass surface condition and the presence of a basalt mat layer within the adhesive thickness were evaluated. The mechanical performances were related with the occurred failure mechanisms. Epoxy-based joints showed higher…

Si j'aurai su, j'aurai pas venu" : éclairage stratégique sur le lancement simultané des deux " Guerre des Boutons "

2014

“If I knew, I will not come”: strategic insight on the simultaneous launch of the two Guerre des BoutonsThe purpose of this paper is to propose an insight on an unusual strategic situation in the movie industry: thesimultaneous launch on screens of two almost identical movies, La Guerre des Boutons. After recalling the stakesattached to the product launch in the film industry, a monograph devoted to this direct confrontation, supplementedby an analysis of the critics of spectators, is proposed. This analysis reveals determinants (the conflictand lack of control in the film industry) and consequences (sub-optimal strategy) of the temporal agglomeration.

Formulation of Agricultural Films by Using of the Recycled Polymers: Resistance to the Photoxidation

2009

Formulation of agricultural films by using of the recycled polymers: resistance to the photo-oxidation

2008

Fast blue B functionalized silica-polymer composite to evaluate 3,5-dihy-droxyhydrocinnamic acid as biomarker of gluten intake

2021

Celiac disease is an immune-mediated systemic disorder elicited by gluten and related prolamines in genetically susceptible individuals. The current treatment is a strict and lifelong gluten-free diet. However, compliance with the gluten-free diet is not always adequate and many food products contain low concentrations of gluten. The determination of dietary transgressions is a challenge for patients, physicians and dietitians. Alkylresorcinols (AR) have been proposed as sensitive and specific biomarkers of gluten consumption. In this work silica-polymer composites doped with fast blue B reagent (FB) have been used to estimate alkylresorcinols in biological samples. The proposed colorimetri…

Dispersioni di nanoargille in biofilms. Il ruolo chiave del polimero nel controllo della struttura.

2011

Negli ultimi anni è notevolmente cresciuto l’interesse nei confronti dei nanocompositi. ossia di materiali caratterizzati da una matrice polimerica nella quale sono disperse particelle di dimensione nanometrica. In questo ambito lo sviluppo di sistemi ottenuti dalla combinazione di un biopolimero e di una nanoargilla può costituire una via interessante per realizzare nuovi green materials tecnologicamente interessanti. In virtù di questa considerazione è stato condotto uno studio chimico-fisico su dispersioni di nanotubi di allosite (HNTs) e nanodischi di laponite RD in matrici biopolimeriche (idrossipropilcellulosa e pectina con basso grado di esterificazione) sia in fase acquosa sia in fa…

Biofilm Related to Animal Health, Zoonosis and Food Transmitted Diseases: Alternative Targets for Antimicrobial Strategy?

2012

The biofilm is a complex community of microbial cells that are associated with a surface and enclosed in a self-produced biopolymer matrix. Such structured community is a response of bacteria to a signal system named quorum sensing (QS) constituted by inter-cell communication through the production of small molecules called autoinducers (AIs) that trigger a cascade of events in gene expression. When the concentration of the AIs molecules reach a certain threshold, the bacterial population acts as a single organism, collectively expressing virulence or biofilm forming genes. Gram-positive bacteria use modified oligopeptides as QS effectors molecules.

Description of Solid-to-Solid Redox Processes Based on the Voltammetry of Immobilized Particles Methodology: A Logistic Approximation

2022

A semiempirical model to describe the voltammetry of nontopotactic solid-to-solid redox processes occurring in the voltammetry of immobilized particles (VIMP) electrochemistry is described. It is applied to the reduction of solid metal compounds to the corresponding metal in contact with suitable electrolytes. The model is based on the assumption that the transferred charge is a logistic function of the applied potential, a situation that applies for reversible redox processes involving strongly adsorbed reactants. The model satisfactorily applies to reproduce linear potential scan curves recorded for graphite electrodes modified with different lead compounds (PbO, PbCl2·2H2O, lead-tin yell…

Growth and characterization of anodic films on Sc in aqueous solutions

2008

WO 3 as Additive for Efficient Photocatalyst Binary System TiO 2 /WO 3

2021

The financial support provided by Scientific Research Project for Students and Young Researchers No. SJZ/2018/9 implemented at the Institute of Solid State Physics, University of Latvia is greatly acknowledged. Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the Euro-pean Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART².