Search results for "first"

Stability of FeVO4-II under Pressure: A First-Principles Study

2022

In this work, we report first-principles calculations to study FeVO4 in the CrVO4 -type (phase II) structure under pressure. Total-energy calculations were performed in order to analyze the structural parameters, the electronic, elastic, mechanical, and vibrational properties of FeVO4 -II up to 9.6 GPa for the first time. We found a good agreement in the structural parameters with the experimental results available in the literature. The electronic structure analysis was complemented with results obtained from the Laplacian of the charge density at the bond critical points within the Quantum Theory of Atoms in Molecules methodology. Our findings from the elastic, mechanic, and vibrational p…

CO2 and CH2 Adsorption on Copper-Decorated Graphene: Predictions from First Principle Calculations

2022

Calculations were performed using Latvian Super Cluster (LASC), located in Center of Excellence at Institute of Solid State Physics, the University of Latvia, which is supported by European Union Horizon2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under Grant Agreement No. 739508, project CAMART2. The authors would like to express their gratitude for funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 768789 (CO2EXIDE project). In the last stage of investigation and during the preparation of the publication, the authors were assisted by the postdoc D.B. with his own funding from project No. 1.1.1.2/VIAA/l/16/147 (…

Kinetik und Radikalausbeute beim Zerfall tertiärer Hyponitrite

1971

Der thermische Zerfall von Dicumylhyponitrit (1a) ist eine Reaktion erster Ordnung mit einer Aktivierungsenthalpie von 27.3 keal/Mol und einer Aktivierungsentropie von 8.5 cal/Mol·Grad in Isooctan. Die Radikalausbeute fur 1a betragt 84%, fur Di-tert.-butylhyponitrit 92%. Die Zerfallskonstanten substituierter Dicumylhyponitrite gehorchen bei Verwendung der σ+-Werte der Hammett-Beziehung mit σ=+ +0.34. Kinetic and Radical Efficiency for the Decomposition of Tertiary Hyponitrites The thermal decomposition of dicumylhyponitrite (1a) is a first order reaction with an activation enthalpy of 27.3 kcal/mole and an activation entropy of 8.5 e. u. in isooctane. The efficiency of radical formation is …

Does clinical or cognitive insight predict outcome in psychosis? Findings from a longitudinal first episode cohort

2013

History of a Vineyard in Champagne: From Eighteenth to Twenty-First Century

2019

This contribution illustrates the history of the vineyard in Champagne in interaction with the invention of sparkling wines in an area of ancient viticulture. The socio-geographical configuration of this vineyard progressively changed, associating crises and expansions, at the end of which emerges in the twentieth century a vineyard very different from that existing in the early eighteenth century, when the sparkling wine was invented in the Champagne region. In the new Millennium, after the great crisis of the 2008–2009, the shipments of Champagne wines have remained stable overall for a decade, but only exports out of Europe have increased significantly. The sales of independent winemaker…

Artistic value of audience index

2016

Una de las manifestaciones de la cultura actual es su tendencia a la horizontalizacion. Marcel Duchamp senalo ya hace casi un siglo esta realidad, que comenzo a materializarse en la esfera artistica con la industria cinematografica y que ha alcanzado su maxima expresion con la revolucion digital. Internet, ha venido a cambiar, o mejor, a demostrar de facto lo que algunos teoricos senalan desde hace decadas. Y es que las audiencias no son esa masa uniforme, pasiva, aislada y, por tanto, facilmente controlable por la Industria Cultural o por el poder politico o economico. En la sociedad telematica, la facilidad de acceso a la oferta y la saturacion informativa exigen una participacion al espe…

Education as a Strategy to Tackle Over Tourism for Overtourism and Inclusive Sustainability in the Twenty-First Century

2020

Overtourism is a systemic indicator of failure in the process of planning and destination management and temporary patchworks will not solve it. Inclusive Sustainable Tourism is proposed as a lasting intervention to address the evil of Overtourism. Cultural analysts call the attention on over-tourism as a post-modern social malady which exhibits the decline of the social bondage. This vantage point needs to meet with the more pragmatic ones advanced by tourism management practitioners and find an agreeable middle ground. It is believed that both sides find agreement in the need for providing appropriate educational interventions to overcome the problem of Overtourism.

The THESEUS space mission concept: science case, design and expected performances

2018

THESEUS is a space mission concept aimed at exploiting Gamma-Ray Bursts for investigating the early Universe and at providing a substantial advancement of multi-messenger and time-domain astrophysics. These goals will be achieved through a unique combination of instruments allowing GRB and X-ray transient detection over a broad field of view (more than 1sr) with 0.5¿1 arcmin localization, an energy band extending from several MeV down to 0.3¿keV and high sensitivity to transient sources in the soft X-ray domain, as well as on-board prompt (few minutes) follow-up with a 0.7¿m class IR telescope with both imaging and spectroscopic capabilities. THESEUS will be perfectly suited for addressing …

Constructed Wetlands as Sustainable Technology for the Treatment and Reuse of the First-Flush Stormwater in Agriculture—A Case Study in Sicily (Italy)

2020

This paper describes a case study that was carried out on a Sicilian company (Italy) dealing with separate waste collection and recycling of glass. The aims of this study were to evaluate the overall efficiency of a vertical subsurface flow system (VSSFs) constructed wetland (CW) operating for the treatment of first-flush stormwater and the effects of treated wastewater on the morphological and aesthetic characteristics of ornamental pepper and rosemary plants. The system had a total surface area of 46.80 m2 and was planted with common reed and giant reed. Wastewater samples were taken from October 2018 to July 2019 at the CW inlet and outlet for chemical-physical and microbiological charac…

Higher-order polarizations on the Virasoro group and anomalies

1991

In a previous paper the authors showed that the space of (first order) polarized functions on the Virasoro group is not, in general, irreducible. The full reduction was explicitly achieved by taking the orbit of the enveloping algebra through the vacuum. This additional step provided the proper quantization in the “strong-coupling” domain 0<c≦1. In this paper we introduce the concept of “higher order polarization” as a generalization of that of polarization. We prove that the imposing of the additional (higher-order) polarization conditions is equivalent to the taking of the above-mentioned orbit. This demonstrates that the generalized (higher-order) polarization conditions suffice to obtai…