Search results for "14"
showing 10 items of 9841 documents
Novel method for determination of tritium depth profiles in metallic samples
2019
Tritium accumulation in fusion reactor materials is considered a serious radiological issue, therefore a lot of effort has been concentrated on the development of radiometric techniques. A novel method, based on gradual dissolution, for the determination of the total tritium content and its depth profiles in metallic samples is demonstrated. This method allows for the measurement of tritium in metallic samples after their exposure to a hydrogen and tritium mixture, tritium containing plasma or after irradiation with neutrons resulting in tritium formation. In this method, successive layers of metal are removed using an appropriate etching agent in the controlled regime and the amount of evo…
Protected but Accessible: Oxygen Activation by a Calixarene-Stabilized Undecagold Cluster
2013
DFT computations show that calixarenes stabilize subnanometer Au11 clusters allowing access of small molecules like O2 to reactive metal sites in the core. Maximum of three dioxygen molecules can bind to the cluster, and they are activated to a superoxo O2(-) state. This study predicts that gold clusters could act as viable oxidation catalysts at ambient conditions based on similar principles as the metal centers in enzymes.
Motivos por los que los emigrantes españoles se inscriben en el registro consular
2018
La inscripción en el registro consular no es obligatoria para los emigrantes españoles. Conlleva, no obstante, una serie de ventajas que propician, antes o después, su realización. En este artículo se identifican y analizan los principales motivos que animan a ello a los emigrantes españoles. Se toman como base fundamental los datos e informaciones obtenidos a través de una encuesta cuantitativa y entrevistas semiestructuradas realizadas a más de cuatro mil españoles residentes en el extranjero. Se concluye que los principales motivos para llevar a cabo esta inscripción son los relacionados con el ejercicio de derechos y deberes ciudadanos (especialmente el de sufragio en elecciones español…
Il manto rosa va in città
2015
Il "manto rosa", un grande telo prodotto a partire da sacchi della spazzatura dai ragazzi del workshop nell'ambito del progetto didattico internazionale "Inhabiting the territory", è stato portato per un giorno in giro per la città di Palermo, un'installazione a grande scala che ha consentito di fare interagire sorprendentemente un manufatto, in origine povero e costruito in poco tempo, con la dimensione urbana e sociale della città. Dappertutto la festa ambulante che ha coinvolto la città, i suoi abitanti e il gruppo di lavoro, è stata l’occasione di sperimentare e misurare la forza del proprio lavoro in pubblico, dentro spazi con regole autonome e difficili da infrangere, per innestare la…
Sull’applicabilità in materia tributaria della penalità di mora prevista dal codice di procedura civile
2021
Nel giudizio tributario di annullamento, se a volte la rimozione dell’atto dichiarato illegittimo risulta già pienamente satisfattiva, altre volte potrebbe non essere sufficiente, rendendosi necessaria un’attività in positivo dell’amministrazione, consistente, ad esempio, nella cancellazione dell’iscrizione a ruolo, o di un provvedimento cautelare già adottato. In ambito processual-civilistico l’art. 614 bis c.p.c. prevede uno strumento di coazione indiretta, finalizzato a stimolare l’esecuzione spontanea delle sentenze di condanna all’adempimento di obbligazioni diverse dal pagamento delle somme di denaro. All’interno del decreto sul processo tributario non si rinviene alcuna norma che dis…
Tietotekniikan valtakunnallisten oppisisältöjen toteutuminen Keski-Suomen peruskoulujen opetuskäytänteissä
2017
Tutkimus sai alkunsa kiinnostuksesta uusia Perusopetuksen opetussuunnitelman perusteita kohtaan. Vuonna 2014 hyväksytty POPS asettui erityisesti tieto- ja viestintätekniikan opetuksen osalta vastaamaan perusopetuksessa havaittuihin puutteisiin ja ongelmiin. Tutkimuksen tarkoituksena oli selvittää mitä uusia sisältöjä POPS14 tuo tietotekniikan opetukseen sekä kuinka noiden sisältöjen opetus toteutuu koulujen arjessa. Tutkimuksessa tunnistettiin tyypilliset ja yleisesti käytössä olevat TVT:n opetusmenetelmät ja niitä pyrittiin kuvailemaan laadullisen tutkimuksen keinoin. Tavoitteeseen päästiin lähinnä Opetushallituksen julkaisuihin kohdistuneen kirjallisuuskatsauksen, Keski-Suomen peruskouluj…
Profiles of work intensification among Finnish managers: relationships with well-being and turnover intentions
2020
Tutkimuksessa selvitettiin, millaisia työn intensifikaation eli työn kiihtymisen profiileja voidaan tunnistaa johtajilla ja miten eri profiilien johtajat eroavat toisistaan työhyvinvoinnin ja työnkuvan vaihtoajatusten suhteen. Kyselytutkimuksen otos poimittiin Professoriliiton, Tieteentekijöiden liiton, Suomen Ekonomien ja Tekniikan Akateemisten jäsenrekistereistä. Tutkituista johtajista (N=705) yli puolet (56 %) oli miehiä. Löysimme K-keskiarvojen klusterianalyysin avulla viisi profiilia: 1) Riskiprofiili (voimakas työn intensifikaatio, 31 %), 2) suotuisa profiili (työn- ja urasuunnittelun vaatimukset lisääntyneet kohtuullisesti, 19 %), 3) haitta- ja haastestressoriprofiili (työtahti ja ti…
Measurement of the low-energy antideuteron inelastic cross section
2020
In this Letter, we report the first measurement of the inelastic cross section for antideuteron-nucleus interactions at low particle momenta, covering a range of $0.3 \leq p < 4$ GeV/$c$. The measurement is carried out using p-Pb collisions at a center-of-mass energy per nucleon-nucleon pair of $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV, recorded with the ALICE detector at the CERN LHC and utilizing the detector material as an absorber for antideuterons and antiprotons. The extracted raw primary antiparticle-to-particle ratios are compared to the results from detailed ALICE simulations based on the GEANT4 toolkit for the propagation of antiparticles through the detector material. The analysis of th…
Measurement of the Fluctuations in the Number of Muons in Extensive Air Showers with the Pierre Auger Observatory
2021
The successful installation, commissioning, and operation of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and administrative staff in Malargue. We are very grateful to the following agencies and organizations for financial support: Argentina-Comision Nacional de Energia Atomica, Agencia Nacional de Promocion Cientifica y Tecnologica (ANPCyT), Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Gobierno de la Provincia de Mendoza, Municipalidad de Malargue, NDM Holdings and Valle Las Lenas; in gratitude for their continuing cooperation over land access; Australia-the Australian Research Council; Brazil…
Esperienze didattiche e traiettorie di architettura in Corea del Sud
2018
Over the last few years the concept of knowledge-based has acquired increasing acceptance, thus providing a new context in which knowledge may become a fundamental resource for innovation. To this end, the internationalization of academic activity is a fundamental tool for awareness in interaction in didactic and research methodology. This article presents a few thoughts regarding he teaching and research of the LabCity Architecture (DARCH-UNIPA group), on the theme of the transformation of the city of Busan, in South Korea, through the re-composition of disseminated parts of the city and the enhancement of the urban and natural heritage of the contemporary city.