Search results for: Celia Duce

Items from 1 to 20 out of 27 results

article

A multi-analytical characterization of artists’ carbon-based black pigments

Anna Lluveras-Tenorio, Alessio Spepi, Matteo Pieraccioni, Stefano Legnaioli, more

Journal of Thermal Analysis and Calorimetry > 2019 > 138 > 5 > 3287-3299

The most common synthetic carbon-based black pigments can be divided into three main groups on the basis of the material used for their production: bone blacks, vine blacks and lampblacks. This work reports on the physicochemical characterization of the three commercial pigments purchased from Kremer Pigmente (Germany) and Zecchi (Italy) by means of a multi-analytical approach, which included thermoanalytical...

article

Isothermal calorimetry protocols to monitor the shelf life and aftermarket follow-up of fresh cut vegetables

Nabil Haman, Marco Signorelli, Celia Duce, Laura Franzetti, more

Journal of Thermal Analysis and Calorimetry > 2019 > 137 > 5 > 1673-1680

Protocols and guidelines were assessed in order to apply isothermal calorimetry as a complementary/alternative method to monitoring, during the shelf life and the microbial growth/metabolism in commercial fresh cut vegetables with random initial microbial population. Moreover, the endogenous microbial population was used as a biosensor to check the modifications occurred during long storage for aftermarket...

article

Sidestepping the challenge of casein quantification in ancient paintings by dot-blot immunoassay

Cristina Cattò, Michela Gambino, Francesca Cappitelli, Celia Duce, more

Microchemical Journal > 2017 > 134 > C > 362-369

A straightforward procedure based on dot-blot immunoassay is proposed as an effective diagnostic tool suitable for detecting and quantifying milk casein in cultural heritage samples. A polyclonal primary antibody, denaturing conditions and the standard addition method were used to overcome barriers common to the traditional analysis of protein-based artistic materials, providing the possibility of...

article

Vaporization kinetic study of lavender and sage essential oils

Celia Duce, Stefano Vecchio Ciprioti, Alessio Spepi, Luca Bernazzani, more

Journal of Thermal Analysis and Calorimetry > 2017 > 130 > 1 > 595-604

The thermal behavior of lavender and sage essential oils (EOs) and also that of their main components (camphor and 1,8-cineole) were studied by thermogravimetry (TG) at different scan rates under inert gas atmosphere up to about 140 °C. All the samples investigated undergo a single-step evaporation starting from ambient temperature without evidence of side decomposition processes. On the basis of...

article

An investigation into the curing of urushi and tung oil films by thermoanalytical and mass spectrometric techniques

Diego Tamburini, Dario Sardi, Alessio Spepi, Celia Duce, more

Polymer Degradation and Stability > 2016 > 134 > C > 251-264

Urushi is the oldest and most precious lacquer used since antiquity in East Asia. For artistic purposes, in order to obtain suitable rheological properties, the lacquer is usually mixed with a vegetable oil. In this work we investigated the curing process of urushi/tung oil mixtures in order to highlight the chemical interactions at the molecular level between the two materials.A multi-analytical...

article

Coaxial microwave assisted hydrodistillation of essential oils from five different herbs (lavender, rosemary, sage, fennel seeds and clove buds): Chemical composition and thermal analysis

José González-Rivera, Celia Duce, Danilo Falconieri, Carlo Ferrari, more

Innovative Food Science & Emerging Technologies > 2016 > 33 > C > 308-318

Lavender, sage, rosemary, fennel seed and clove bud essential oils (EOs) were isolated using a microwave-assisted Clevenger-type device, where the microwaves are applied by means of a coaxial antenna and by conventional hydrodistillation (HD). The yield and chemical composition of EOs were analyzed as a function of the microwave (MW) extraction time. A complete chemical characterization was performed...

article

Thermal decomposition of metal N,N-dialkylcarbamates

Celia Duce, Alessio Spepi, Guido Pampaloni, Fabio Piccinelli, more

Journal of Thermal Analysis and Calorimetry > 2016 > 123 > 2 > 1563-1569

Thermogravimetric analysis coupled with IR spectroscopy was used to investigate the thermal stability and decomposition products of N,N-dialkylcarbamates of zirconium(IV), hafnium(IV), and niobium(IV), M(O₂CNR₂)₄. The niobium derivatives were less stable than the corresponding Zr(IV) and Hf(IV) derivatives, and the thermal stability was in the order of R = Et > ⁱPr > Me. XRD analysis of the...

article

Fourier transform infrared spectroscopic study of rabbit glue/inorganic pigments mixtures in fresh and aged reference paint reconstructions

Davide Pellegrini, Celia Duce, Ilaria Bonaduce, Simona Biagi, more

Microchemical Journal > 2016 > 124 > C > 31-35

We studied the interactions of rabbit glue, a collagen-based proteinaceous binder, with azurite (Cu₃(CO₃)₂(OH)₂), calcium carbonate (CaCO₃), hematite (Fe₂O₃·nH₂O), red lead (Pb₃O₄) and cinnabar (HgS) by Fourier transform infrared spectroscopy (FT-IR). The research was carried out on a set of paint reconstructions, which were analysed before and after artificial light ageing. A deconvolution of the...

article

Thermal behavior study of pristine and modified halloysite nanotubes

Celia Duce, Stefano Vecchio Ciprioti, Lisa Ghezzi, Vincenzo Ierardi, more

Journal of Thermal Analysis and Calorimetry > 2015 > 121 > 3 > 1011-1019

Pristine halloysite nanotubes (HNTs) were studied by thermogravimetry (TG) up to 800 °C. Etching of alumina from inside the tube (causing a significant increase in tube lumen) was realized by treating the material with an acidic H₂SO₄ solution at 50 °C. Both materials were characterized by TG-FTIR techniques and their thermal behaviors were compared with that of kaolinite. The coupling of TG with...

article

Interactions between inorganic pigments and rabbit skin glue in reference paint reconstructions

Lisa Ghezzi, Celia Duce, Luca Bernazzani, Emilia Bramanti, more

Journal of Thermal Analysis and Calorimetry > 2015 > 122 > 1 > 315-322

The thermal degradation of rabbit skin glue, a collagen-based proteinaceous material used as a paint binder in paintings, was investigated in this paper. Paint reconstructions of the glue on its own or mixed with azurite (Cu₃(CO₃)₂(OH)₂), calcium carbonate (CaCO₃), hematite (Fe₂O₃·nH₂O) and red lead (Pb₃O₄) were analysed using a thermoanalytical approach. This method enabled us to investigate the...

article

FTIR study of ageing of fast drying oil colour (FDOC) alkyd paint replicas

Celia Duce, Valentina Della Porta, Maria Rosaria Tiné, Alessio Spepi, more

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy > 2014 > 130 > Complete > 214-221

We propose ATR-FTIR spectroscopy for the characterization of the spectral changes in alkyd resin from the Griffin Alkyd Fast Drying Oil Colour range (Winsor & Newton), occurring over 550days (∼18months) of natural ageing and over six months of artificial ageing under an acetic acid atmosphere. Acetic acid is one of the atmospheric pollutants found inside museums in concentrations that can have...

article

Cobalt complexes able to bind dioxygen: Thermodynamic studies and DFT calculations

Chiara Cappelli, Celia Duce, Mauro Formica, Vieri Fusi, more

Inorganica Chimica Acta > 2014 > 417 > C > 230-238

The ligational properties of the ligand 2-[bis-(2-aminoethyl)-aminomethyl]phenol (L) towards Co(II) ion were studied by means of potentiometric measurements in aqueous solution (298.1±0.1K, I=0.15moldm⁻³). L forms a stable mononuclear [CoH₋₁L]⁺ (logK=13.42), a hydroxylated mononuclear [CoH₋₁LOH] and a dinuclear [(CoH₋₁L)₂]²⁺ species in which the ligand/metal ratio is 2:2.The Co(II) species is prone...

article

A multi-analytical approach to studying binding media in oil paintings

Ilaria Bonaduce, Leslie Carlyle, Maria Perla Colombini, Celia Duce, more

Journal of Thermal Analysis and Calorimetry > 2012 > 107 > 3 > 1055-1066

This article presents a multi-analytical approach to investigating the drying, polymerisation and oxidative degradation of linseed oil, which had undergone various treatments known to be undertaken during the nineteenth century in preparation for painting. The oil was mechanically extracted from the same seed lot then processed by different methods: water washing, heat treatments, and the addition...

article

Physico-chemical characterization of protein–pigment interactions in tempera paint reconstructions: casein/cinnabar and albumin/cinnabar

Celia Duce, Lisa Ghezzi, Massimo Onor, Ilaria Bonaduce, more

Analytical and Bioanalytical Chemistry > 2012 > 402 > 6 > 2183-2193

In this work, we characterized paint reconstructions using ovalbumin and casein as binders, and cinnabar (HgS) as a pigment, before and after artificial ageing. Egg and casein are common paint binders that were used historically in the technique of tempera painting. Despite extensive research on the identification of proteinaceous binders in paintings, there is a substantial lack of knowledge regarding...

article

Quantitative Structure−Property Relationship (QSPR) Prediction of Solvation Gibbs Energy of Bifunctional Compounds by Recursive Neural Networks ^†

Luca Bernazzani, Celia Duce, Alessio Micheli, Vincenzo Mollica, more

Journal of Chemical & Engineering Data > 2010 > 55 > 12 > 5425 - 5428

article

Evaluation of hierarchical structured representations for QSPR studies of small molecules and polymers by recursive neural networks

Carlo Bertinetto, Celia Duce, Alessio Micheli, Roberto Solaro, more

Journal of Molecular Graphics and Modelling > 2009 > 27 > 7 > 797-802

This paper reports some recent results from the empirical evaluation of different types of structured molecular representations used in QSPR analysis through a recursive neural network (RNN) model, which allows for their direct use without the need for measuring or computing molecular descriptors. This RNN methodology has been applied to the prediction of the properties of small molecules and polymers...

article

Adsorption of Ionic Peptides on Inorganic Supports

Susanna Monti, Michele Alderighi, Celia Duce, Roberto Solaro, more

The Journal of Physical Chemistry C > 2009 > 113 > 6 > 2433 - 2442

article

Recursive neural networks prediction of glass transition temperature from monomer structure: an application to acrylic and methacrylic polymers

Celia Duce, Alessio Micheli, Roberto Solaro, Antonina Starita, more

Journal of Mathematical Chemistry > 2009 > 46 > 3 > 729-755

We propose a new method based on a Recursive Neural Network (RecNN) for predicting polymer properties from their structured molecular representations. RecNN allows for a completely novel approach to QSPR analysis by direct adaptive processing of molecular graphs. This model joins the representational power of structured domains with Neural Network ability to capture underlying complex relationships...

article

VLE, LLE, and HE

Celia Duce, Maria Rosaria Tiné, Luciano Lepori, Enrico Matteoli

Fluid Phase Equilibria > 2008 > 269 > 1-2 > 59-68

Vapour–liquid equilibria (VLE), liquid–liquid equilibria (LLE), and excess enthalpies (H ^E ) of binary mixtures of perfluoro-n-hexane plus an ether (diethyl, dipropyl, dibutyl, butyl methyl, and butyl ethyl ether), have been determined using a head-space gas-chromatographic technique, a turbidimetric apparatus, and a heat-flow calorimeter, respectively. A recently designed titration technique...

article

A comparative study of thermodynamic properties of binary mixtures containing perfluoroalkanes

Celia Duce, Maria Rosaria Tinè, L. Lepori, E. Matteoli, more

Journal of Thermal Analysis and Calorimetry > 2008 > 92 > 1 > 145-154

Literature data on molar excess enthalpies and molar excess Gibbs energies, liquid-liquid equilibria, activity coefficients at infinite dilution and partial molar enthalpies at infinite dilution of binary mixtures of n-perfluoroalkanes (C₅−C₈)+n-alkanes (C₅−C₈) and of n-perfluorohexane-linear monoethers of general formula, CH₃(CH₂)_m-O-(CH₂)_n-CH₃ (m,n=1–4), are treated in the framework of DISQUAC,...

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Keywords

TG (4)
ALKANES (3)
ETHERS (3)
MOLECULAR INTERACTIONS (3)
PERFLUOROALKANES (3)
THERMOGRAVIMETRIC ANALYSIS (3)
ACTIVITY COEFFICIENT (2)
BINARY MIXTURES (2)
CASEIN (2)
CHEMINFORMATICS (2)
CULTURAL HERITAGE (2)
DSC (2)
ESSENTIAL OILS (2)
EXCESS ENTHALPY (2)
GLASS TRANSITION TEMPERATURE (2)
PARTIAL MOLAR ENTHALPY (2)
POLY(METH)ACRYLATES (2)
QSPR (2)
RECURSIVE NEURAL NETWORK (2)
SOLVATION (2)
TG-FTIR (2)
1,8-CINEOLE (1)
ALKANE (1)
ALKYD PAINTS (1)
APPARENT AND PARTIAL MOLAR VOLUME (1)
ARTIFICIAL AGEING (1)
ATR-FTIR (1)
AUTOXIDATION (1)
AZURITE (1)
BLACK PIGMENTS (1)
CALCIUM CARBONATE (1)
CAMPHOR (1)
CINNABAR (1)
COBALT COMPLEX (1)
COLLAGEN (1)
CURING (1)
CYCLIC STRUCTURE (1)
DATA (1)
DE-MS (1)
DEHYDRATION KINETICS (1)
DEHYDROXYLATION KINETICS (1)
DENSITY (1)
DIFFERENTIAL SCANNING CALORIMETRY (1)
DISQUAC CONTRIBUTIONS (1)
DOT-BLOT IMMUNOASSAY (1)
EG-MS (1)
EGA-MS (1)
EQUILIBRIUM STUDIES (1)
EXCESS GIBBS ENERGY (1)
EXCESS PROPERTIES (1)
EXCESS VOLUME (1)
EXCESS VOLUMES (1)
EXPERIMENTS (1)
FOURIER TRANSFORM INFRARED SPECTROSCOPY (FTIR) (1)
FOURIER-TRANSFORM INFRARED SPECTROSCOPY (1)
FTIR ANALYSIS (1)
GC-MS (1)
GC/MS (1)
GROUP CONTRIBUTIONS (1)
HALLOYSITE NANOTUBES (1)
HEMATITE AND RED LEAD (1)
INORGANIC PIGMENTS (1)
INTERACTIONS (1)
IONIC LIQUIDS (1)
IR SPECTROSCOPY (1)
ISOMERIC BUTANOLS (1)
ISOTHERMAL CALORIMETRY (1)
KISSINGER–AKAHIRA–SUNOSE METHOD (1)
LAVENDER (1)
LIBS (1)
LINSEED OIL (1)
LIQUID-LIQUID EQUILIBRIA (1)
MASS SPECTROMETRY (1)
METAL N,N-DIALKYLCARBAMATES (1)
MICROWAVE EXTRACTION (1)
MODULATED TG (1)
MODULATED THERMOGRAVIMETRY (1)
MOLECULAR REPRESENTATION (1)
NANOPOWDERS (1)
NATURAL AGEING (1)
OIL PRE-TREATMENTS (1)
OVALBUMIN (1)
OXYGEN (1)
OXYGENATED MONOTERPENES (1)
PARTIAL MOLAR VOLUME (1)
PERFLUOROALKANE (1)
PERFLUOROHEXANE (1)
PHENOL (1)
PIGMENT (1)
POLYAMINES (1)
PROTEIN QUANTIFICATION (1)
PROTEIN–PIGMENT INTERACTION (1)
PY-GC-MS (1)
RABBIT SKIN GLUE (1)
RAMAN SPECTROSCOPY (1)
READY-TO-USE VEGETABLES, MICROBES (1)
RECURSIVE NEURAL NETWORKS (1)
SAGE (1)
SCALED PARTICLE THEORY (1)
SEM (1)
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Data set

Elsevier (12)
Springer (11)
ACS (4)

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Search results for: Celia Duce

A multi-analytical characterization of artists’ carbon-based black pigments

Isothermal calorimetry protocols to monitor the shelf life and aftermarket follow-up of fresh cut vegetables

Sidestepping the challenge of casein quantification in ancient paintings by dot-blot immunoassay

Vaporization kinetic study of lavender and sage essential oils

An investigation into the curing of urushi and tung oil films by thermoanalytical and mass spectrometric techniques

Coaxial microwave assisted hydrodistillation of essential oils from five different herbs (lavender, rosemary, sage, fennel seeds and clove buds): Chemical composition and thermal analysis

Thermal decomposition of metal N,N-dialkylcarbamates

Fourier transform infrared spectroscopic study of rabbit glue/inorganic pigments mixtures in fresh and aged reference paint reconstructions

Thermal behavior study of pristine and modified halloysite nanotubes

Interactions between inorganic pigments and rabbit skin glue in reference paint reconstructions

FTIR study of ageing of fast drying oil colour (FDOC) alkyd paint replicas

Cobalt complexes able to bind dioxygen: Thermodynamic studies and DFT calculations

A multi-analytical approach to studying binding media in oil paintings

Physico-chemical characterization of protein–pigment interactions in tempera paint reconstructions: casein/cinnabar and albumin/cinnabar

Quantitative Structure−Property Relationship (QSPR) Prediction of Solvation Gibbs Energy of Bifunctional Compounds by Recursive Neural Networks ^†

Evaluation of hierarchical structured representations for QSPR studies of small molecules and polymers by recursive neural networks

Adsorption of Ionic Peptides on Inorganic Supports

Recursive neural networks prediction of glass transition temperature from monomer structure: an application to acrylic and methacrylic polymers

VLE, LLE, and HE

A comparative study of thermodynamic properties of binary mixtures containing perfluoroalkanes

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