Search results for " SOLID"
showing 10 items of 1333 documents
I GRUPPI DI ACQUISTO SOLIDALE IN SICILIA ANALISI DI UN CASO STUDIO: IL GAS DELLA FACOLTÀ DI AGRARIA DI PALERMO “GASUALMENTE”
2012
Reilu siirtymä, ekologinen solidaarisuus ja kestävyysmurroksen mahdollisuus?
2021
Ekologisen kriisin ratkaisemiseksi tarvittavan kestävyysmurroksen yhteydessä on lisääntyvästi alettu keskustella oikeudenmukaisuudesta tai reiluudesta. Reilu siirtymä tarkoittaa sosiaalisen oikeudenmukaisuuden nostamista keskeiseksi osaksi ympäristökriisin ratkaisua, mikä on tärkeää sekä siirtymän hyväksyttävyyden että toimivan toteutuksen kannalta. Samalla oikeudenmukaisuuden korostaminen pitää kuitenkin sisällään riskin ympäristökriisin ratkaisemisen hidastumisesta. Erityisesti näin voi käydä, mikäli oikeudenmukaisuus kääntyy tarkoittamaan oikeutta kestämättömien elämäntapojen ja yhteiskuntarakenteiden ylläpitämiseen. Tarkastelemme tässä katsauksessa reilua siirtymää kriittisesti ja nosta…
Définir et comprendre l’ESS sur les territoires frontaliers franco-suisses :l’observatoire ESSpace
2022
The four Franco-Swiss chambers of the Social and Solidarity Economy (SSE) (Franche-Comté, Vaud, Rhône-Alpes and Genève) collaborated from 2012 to 2014 in an Interreg IV project, the purpose of which was to conduct "a collective reflection to support the development, enhance the value of good practices and social and solidarity initiatives from one region to another" (Project Summary Document, 2015). This reflection aims to understand together how the SSE is experienced in these territories, to explore the similarities, nuances and differences.A corpus of the various definitions of the actors themselves, and selected by these actors, was constituted and analysed according to the method of Co…
Anomalous and normal Hall effect in hydrogenated amorphous Si prepared by plasma enhanced chemical vapor deposition
2010
The double sign anomaly of the Hall coefficient has been studied in p -doped and n -doped hydrogenated amorphous silicon grown by plasma enhanced chemical vapor deposition and annealed up to 500 °C. Dark conductivity as a function of temperature has been measured, pointing out a conduction mechanism mostly through the extended states. Anomalous Hall effect has been observed only in the as-deposited n -doped film, disappearing after annealing at 500 °C, while p -doped samples exhibit normal Hall effect. When Hall anomaly is present, a larger optical band gap and a greater Raman peak associated with Si-H bond are measured in comparison with the cases of normal Hall effect. The Hall anomaly wi…
A neutron diffraction study of the glass transition in (KBr)0.47(KCN)0.53
1985
Abstract The molecular crystal (KBr) 0.47 (KCN) 0.53 has been investigated by elastic neutron diffraction at the transition from the paraelastic to the orientational glass state. The freezing temperature is characterized by the onset of a momentum transfer dependent broadening of the diffraction lines indicating the transition from a crystalline to an amorphous state.
Creation of glass-characteristic point defects in crystalline SiO2 by 2.5 MeV electrons and by fast neutrons
2019
The support from M -ERANET project “MyND” is acknowledged. K.K. was partially supported by the Collaborative Research Project of Laboratory for Materials and Structures, Tokyo Institute of Technology . Visiting researcher support from Ecole Polytechnique, Palaiseau is appreciated. Mr. Olivier Cavani is thanked for the expert help with irradiations.
Hydrodesulfurization cobalt-based catalysts modified by gold
2007
Cobalt catalysts supported on amorphous SiO2 and ordered mesoporous silica (MCM-41) were prepared by incipient wetness impregnation. Gold was added by consecutive impregnation or by co-impregnation. The materials were characterised by XPS, XRD and TPR techniques and evaluated in the hydrodesulfurization (HDS) of thiophene in order to investigate the effect of the noble metal on the structure and on the catalytic behaviour of the supported cobalt. Co/MCM-41 exhibited higher HDS activity and higher stability than the Co/SiO2. Moreover, in contrast to silica case, the gold impregnated MCM-41, produced an enhancement of the cobalt catalytic activity, and this is likely to be related to an incre…
Optimized bath for electroless deposition of palladium on amorphous alumina membranes
2006
A new bath for the electroless deposition of palladium on anodic alumina (AA) membranes is proposed. It was found that the optimal conditions for the uniform deposition of palladium, with minimal damage to the AA membranes, were under conditions of pH 8.4 and plating times shorter than 30 min. The deposited Pd layer was detected by X-ray diffraction (XRD) and energy dispersive X-ray (EDX) analysis. The morphology of the AA membrane before and after plating was examined by scanning electron microscopy (SEM). EDX analysis revealed that palladium was deposited only on the surfaces of the membrane and Sn ions, coming from the sensitizing bath, were incorporated into the palladium layer. EDTA in…
Identifying Iron-Bearing Nanoparticle Precursor for Thermal Transformation into the Highly Active Hematite Photo-Fenton Catalyst
2020
Funding: This reseach was funded by the European Regional Development Fund within the Activity 1.1.1.2 “Post-doctoral Research Aid” of the Specific Aid Objective 1.1.1 “To increase the research and innovative capacity of scientific institutions of Latvia and the ability to attract external financing, investing in human resources and infrastructure” of the Operational Programme “Growth and Employment” (No. 1.1.1.2/VIAA/1/16/157).
Understanding the Stability and Recrystallization Behavior of Amorphous Zinc Phosphate
2021
Zinc phosphate, an important pigment in phosphate conversion coatings, forms protective films on rubbing surfaces. We have simulated the underlying reactions under shear by ball-milling zinc phosphate and monitored the reaction of hopeite (Zn3(PO4)2·4H2O) and the retarded recrystallization of the amorphous reaction product by powder X-ray diffraction (PXRD) and quantitative infrared (IR) spectroscopy. Abrasion of stainless steel was simulated by addition of pure 57Fe. The results provide insight into the chemistry of phosphate conversion coatings or during battery cycling of metal phosphates and give theoretical guidance for the preparation of amorphous phosphates. Thermal analysis revealed…