Search results for "Talc"

Uso di idrotalciti in compositi a matrice PLA preparati nel fuso

2012

Thermoanalytical study of nucleating effects in polypropylene composites

1996

Interfacial structure plays an important role in the performance of polypropylene composites. Transcrystalline interfacial layer were determined in talc filled polypropylene. The crystallization and melting behaviour of talc and CaCC3 filled polypropylene could be modified with smaller amount of additives like elastomer and surfactants. Through the effect of these additives the structure of interface and the degree of crystallinity could be controlled in filled polypropylene.

Effetto dei metodi di lavorazione sulle proprietà di nanocompositi PLA/idrotalcite

2011

Données expérimentales et modélisation d’adsorption des systèmes N2(g)/montmorillonite potassique de Camp-Berteau et N2(g)/hydrotalcite carbonatée

1999

Resume In this paper capacities of adsorption of nitrogen onto two clays at 77 K are compared and analyzed. One system is a montmorillonite of Camp-Berteau saturated by potassium cation and the second one is an hydrotalcite saturated by carbonate anion. Adsorbed amounts have been obtained using a volumetric technique. So it is shown that the smectite adsorbed more than the hydrotalcite at the same relative pressure of nitrogen. The modelling of experimental data by various theories of adsorption as de Brunauer, Emmett et Teller (BET) and t-method are used to calculate the specific surface and to have access to the porosity of these materials at 77 K. Then it is shown that the adsorption of …

Impact of the inclusion of hydrotalcite on the morphological and electrical characteristics of an epoxy-based CNT nanocomposite

2012

The experimental results concerning the correlation between morphological and electrical characteristics of a MWCNT/epoxy based composites are presented. The impact of a nanoclay filler is investigated on the DC conductivity of a matrix loaded with different concentrations of MWCNT in order to evaluate the improvements on the dispersion of CNT inside the epoxy matrix. The dispersion is deemed to be very influencing on the electrical conductivity of the nanocomposite. A detailed morphological and structural characterization allows to interpret the electrical behaviour of the nanocomposites. © 2012 IEEE.

Storytelling digitale. La produzione audiovisiva 4.0

2021

A critical map on the universe of digital storytelling with a focus on the international production and another on the Italian one.

UNOS COBRES FLAMENCOS DEL SIGLO XVII EN TALCA (CHILE)

2017

espanolEn este estudio presentamos cuatro pinturas sobre cobre de ascendencia flamenca, una de ellas firmada por Willem van Herp (1614-1677), a quien tambien atribuimos las restantes. Obras tal vez de la segunda mitad del siglo XVII e inspiradas en Rubens y Teniers el Viejo que, en su mayoria, pertenecieron a Eusebio Lillo y hoy se custodian en el Museo O'Higginiano y de Bellas Artes de Talca (Chile). EnglishIn this study we present four oil on copper paintings of Flemish descent, one by Wil lem van Herp (1614-1677), whom we also attribute the remaining ones. His works may date back to the second half of the 17th century and are inspired by Rubens and Teniers the Elder: Most of them belonge…

Bader's topologycal analysis of the electron density and the laplacian in TOT Phyllosilicates: the case of pyrophyllite and talc

2009

Role of prostaglandin E2 in the invasiveness, growth and protection of cancer cells in malignant pleuritis.

2006

The recurrence of pleural effusions is a common event in a variety of neoplastic diseases. The objective of this study was to identify the mechanisms promoting the homing and growth of cancer cells within the pleural space. A cancer cell line recovered from malignant pleural fluids (lung adenocarcinoma cell line) that constitutively expresses cyclooxygenase 2 (COX-2) and all types of prostaglandin receptors was studied. It was first demonstrated using a matrigel system, that malignant pleural fluids increase the invasiveness of adenocarcinoma cells more than congestive heart failure (CHF) pleural fluids. Moreover, exposure to exudative malignant, but not to CHF pleural fluids, increased the…

Inhaled Surfactant in the treatment of accidental Talc Powder inhalation: a new case report

2011

Abstract The use of talcum powder is incorrectly part of the traditional care of infants. Its acute aspiration is a very dangerous condition in childhood. Although the use of baby powder has been discouraged from many authors and the reports of its accidental inhalation have been ever more rare, sometimes new cases with several fatalities have been reported. We report on a patient in which accidental inhalation of baby powder induced severe respiratory difficulties. We also point out the benefits of surfactant administration. Surfactant contributed to the rapid improvement of the medical and radiological condition, preventing severe early and late complications and avoiding invasive approac…