Search results for "Phase"
showing 10 items of 6344 documents
Liquid structure of a choline chloride-water natural deep eutectic solvent: A molecular dynamics characterization
2021
The liquid structure of a representative of the first water-in-salt (WiS) Natural Deep Eutectic Solvents (NADES), hereinafter indicated as aquoline, a mixture of choline chloride (ChCl) and water with molar ratio 1:3.33, is ex- plored at ambient conditions. Using Molecular Dynamics (MD) simulation tools, we extract structural informa- tion at atomistic level on the nature of inter-correlations between the different moieties. Despite being a very fluid liquid, with much lower viscosity than other common ChCl-based DES, aquoline turns out to be very struc- tured. Computed X-ray and neutron weighted scattering patterns (the latter also on selectively deuterated mix- tures) highlight the existe…
Experimental study of $^{100}$Tc $\beta$ decay with total absorption $\gamma$-ray spectroscopy
2017
International audience; The β decay of Tc100 has been studied by using the total absorption γ-ray spectroscopy technique at the Ion Guide Isotope Separator On-Line facility in Jyväskylä. In this work the new Decay Total Absorption γ-ray Spectrometer in coincidence with a cylindrical plastic β detector has been employed. The β intensity to the ground state obtained from the analysis is in good agreement with previous high-resolution measurements. However, differences in the feeding to the first-excited state as well as weak feeding to a new level at high excitation energy have been deduced from this experiment. Theoretical calculations performed in the quasiparticle random-phase approximatio…
Elton Prifti, Italoamericano. Italiano e inglese in contatto negli USA. Analisi diacronica variazionale e migrazionale. Beihefte zur Zeitschrift für …
2014
Compared to many other studies that are more or less based on particular situations of contact between the Italo-Romance of immigrants and the dominant American English, Prifti’s study is something new and motivates us to pay attention to conserving a sense of wholeness, of completeness, across time and space. In this perspective, Italian-American is seen not as a unique variety, but rather as a diachronic succession and a synchronic coexistence of different varieties, in which a set of varieties can be identified. An analysis of this set, portions of which speakers are aware of in varying degrees, reveals a certain internal order: it appears to be an articulated set of varieties related t…
The Voices of the Foreign Ministers: a Corpus-assisted Study of Ideological Positioning in the Language of Diplomacy
2012
“One of the major aims of a politician is to gain the people’s allegiance, to have them believe that the decisions that are being made are the right ones” (Wilson 1990: 76). The basic idea is that the way we see the world, think about it and act on it, is largely determined by how we 'frame' it, and this in turn may be influenced by our choice of rhetorical device. In the context of diplomacy, language choices, which carry significant communicative intent, are regularly made “to galvanize the audience to achieve a commonality of purpose” (Burhanudeen 2005: 37) through the enactment of specific linguistic mechanisms. This work is part of an ongoing research into register-specific features of…
The Origin of Non-thermal Fluctuations in Multiphase Flow in Porous Media
2021
Core flooding experiments to determine multiphase flow in properties of rock such as relative permeability can show significant fluctuations in terms of pressure, saturation, and electrical conductivity. That is typically not considered in the Darcy scale interpretation but treated as noise. However, in recent years, flow regimes that exhibit spatio-temporal variations in pore scale occupancy related to fluid phase pressure changes have been identified. They are associated with topological changes in the fluid configurations caused by pore-scale instabilities such as snap-off. The common understanding of Darcy-scale flow regimes is that pore-scale phenomena and their signature should have a…
Reti sismiche urbane per monitoraggio sismico monitoraggio strutturale ed allerta precoce
2021
In questa tesi, viene effettuato un analisi preliminare in cui si mette in evidenza come l'italia sia un paese a rischio sismico, poichè possiede molti centri storici con strutture non progettate per eventi sismici di media entità. Si è prestato molta attenzione su quante vite umane vengono salvate dopo un terremoto catastrofico. L'analisi fa emergere come, è importante essere tempestivi nell'estrarre le persone rimaste sotto le macerie, poichè la percentuale di persone estratte vive si mantiene alta solo entro le 48 ore dall'evento. Dopo 96 ore questa percentule si attesta a 0. In eventi passati spesso i soccorsi sono arrivati con giorni di ritardo nelle zone più devastate. L'obbiettivo ch…
Retos y oportunidades de la tecnología móvil en la educación física (Challenges and opportunities of mobile technology in physical education).
2019
La educación física (EF) y su profesorado están llamados a seguir procesos de inmersión digital, voluntarios o involuntarios, asociados al consumo masivo de medios y servicios digitales y a las demandas de la sociedad y de la institución educativa. El uso de tecnología, especialmente la móvil, social y ubicua, se generaliza personal y profesionalmente, aunque la escuela sigue sin encontrarle acomodo. Reconoce su potencial didáctico, pero no logra alcanzarlo. En la EF el uso de tecnologías tradicionales y fijas han demostrado su utilidad en la fase preactiva y postactiva del acto didáctico, sin embargo, los aprendizajes en movilidad propios de la fase activa, aconsejan explorar alternativas …
Mentoring of Newly Qualified Teachers in the Educational Sense
2017
The importance of lifelong learning in teachers’ professional development has become increasingly topical issue globally. In teaching, especially the transition from education to occupation seems to be more challenging compared to other fields. It is evident that under the rapidly changing circumstances teachers’ professional knowledge has to be constantly renewed, and especially in the phase of transition from teacher education to working life, new approaches are needed. peerReviewed
Structure and properties ofn-alkyldimethylsilyl bonded silica reversed-phase packings
1978
Summary The effects of the modifier functionality and the chain length ofn-alkylchlorosilanes on the surface structure of packings and on their retention behaviour in reversed-phase chromatography were investigated. Comparative retention studies on three silica packings that had been treated to maximum conversion withn-octyltrichlorosilane (I),n-octylmethyldichlorosilane (II) andn-octyldimethylmonochlorosilane (III) showed that the most pronounced reversed-phase character is obtained by using III as the modifying reagent. A series ofn-alkyldimethylsilyl bonded silica packings were prepared with widely differingn-alkyl chain lengths. Although the packings are very hydrophobic, the maximum su…
Use of ICT to support epidemiological surveillance on a community of university students during SARS-CoV-2 phase 3 pandemic
2021
Populations documenting to date low incidence rates of SARS-CoV-2 infection are immunologically susceptible and at high exposure risk of new COVID-19 outbreaks during phase 3 of the pandemic. Following the experience documented by other countries with regard to the use of Information Communication Technology (ICT) to counteract the current pandemic, Italy has implemented a contact tracing system based on a mobile application. In this work, we describe the proposal of a complementary ICT-based prototypal model of COVID-19 prevention and surveillance system, involving the university students as sentinels acting both in the academic community and the general population.