Search results for "site"

'Energiemix' versus 'Energiewende' : competing conceptualisations of nuclear energy policy in the German parliamentary debates of 1991-2001

2016

Muutoksen ja tason estimointi rotatoivassa paneeliaineistossa eri estimaattoreiden avulla : sovellus työvoimatutkimuksen aineistoon

1997

How educators commit to enhancing children’s participation in early childhood education pedagogical plans

2022

Background: This is a descriptive study of children’s participation plans in early childhood education (ECE) settings in Finland. The study adopted a multidimensional approach to find out how practices of children’s participation were conceived in pedagogical plans made by ECE staff, representing a focus that is rare in the existing body of research. Aim: Aim of the study was to investigate educators’ commitments to enhancing children’s participation in pedagogical practices in their ECE settings. Setting: Ten centre-based plans for children’s participation composed by ECE staff at ECE centres were selected for the document data in this study. Methods: This study employs the categorisation …

WEB 2.0 ET MUSÉES Les nouveaux visages du visiteur

2012

WEB 2.0AND MUSEUMS: THE NEW EACES OF THE VISITOR The increasing integration of techniques from Web 2.0 by the museums illustrates the profound changes that these structures have realized in building their relationship with the audience. The use of these devices, based on a logic of participation, leads to involve the visitor, traditionally rather kept at a distance, on all stages of the implemeritation of the mUseum offered on Internet. Through a careful examinât icin of sites arid features offered by the museal structures, different roles now devolved to the public have been identified. The emergence of these new "faces" of the visitor comes to question, in the longer-term, about the ident…

Pickering Emulsion Gels Based on Halloysite Nanotubes and Ionic Biopolymers: Properties and Cleaning Action on Marble Surface

2019

We have fabricated ecocompatible Pickering emulsions based on halloysite nanotubes and ionic biopolymers (chitosan and pectin) from renewable resources. The effect of pectin and chitosan on the Pickering emulsion was investigated by direct visualization of the oil droplets and by the thermodynamic characterization at the interface. Pectin enhances the Pickering emulsion stability, while a phase separation and nonhomogeneous gel was observed in the presence of chitosan. We have demonstrated that the Pickering emulsion in a pectin based gel phase is suitable for wax layer removal from a marble surface. A controlled cleaning is achieved by tuning the contact time between the gel and the marble…

Peredača passivnyh konstrukcij v pis'mennyh perevodah s finskogo âzyka na russkij

2002

A link between heritable parasite resistance and mate choice in dung beetles

2019

Parasites play a central role in the adaptiveness of sexual reproduction. Sexual selection theory suggests a role for parasite resistance in the context of mate choice, but the evidence is mixed. The parasite-mediated sexual selection (PMSS) hypothesis derives a number of predictions, among which that resistance to parasites is heritable, and that female choice favors parasite resistance genes in males. Here, we tested the PMSS hypothesis using the dung beetle Onthophagus taurus, a species that can be heavily parasitized by Macrocheles merdarius mites, which are known to affect adult survival. We investigated the heritability of resistance to M. merdarius, as well as whether female O. tauru…

Dependence of effective properties upon regular perturbations

2022

In this survey, we present some results on the behavior of effective properties in presence of perturbations of the geometric and physical parameters. We first consider the case of a Newtonian fluid flowing at low Reynolds numbers around a periodic array of cylinders. We show the results of [43], where it is proven that the average longitudinal flow depends real analytically upon perturbations of the periodicity structure and the cross section of the cylinders. Next, we turn to the effective conductivity of a periodic two-phase composite with ideal contact at the interface. The composite is obtained by introducing a periodic set of inclusions into an infinite homogeneous matrix made of a di…

PHOTOOXIDATION BEHAVIOR OF POLYPROPYLENE NANOCOMPOSITES WITH MODIFIED HALLOYSITE

2017

The photooxidation behaviour of polymer nanocomposites depends on the photooxidation of the matrix, but also on the possible interactions with the nanoparticles. In this work, the effect of halloysite modified nanoparticles on the photooxidation of a polypropylene matrix has been investigated.

Photocatalytic Generation of H2 by Photoreforming of Organics in Aqueous Suspension of Nb2o5/C3n4 Composites

2023

Bare and composite materials based on C3N4 and Nb2O5 have been used as photocatalysts for the photoreforming of aqueous solutions of oxygenated compounds. Both Nb2O5 and Nb2O5/C3N4 composites have been prepared by hydrothermal synthesis and all of them were physical-chemically characterized. In this work two different carbon nitride species i.e. graphitic (g-C3N4) or thermo-etched (TE-C3N4) were used both alone or coupled with Nb2O5. The photo-reforming activity has been measured under UV irradiation by using the semiconductors in the presence of Pt as co-catalysts and, in the case of the best material, it was, for the first time, measured and compared also under natural solar irradiation. …