Search results for "Fluence"
showing 10 items of 482 documents
Effect of the junction angle on turbulent flow at a hydraulic confluence
2018
Despite the existing knowledge concerning the hydrodynamic processes at river junctions, there is still a lack of information regarding the particular case of low width and discharge ratios, which are the typical conditions of mountain river confluences. Aiming at filling this gap, laboratory and numerical experiments were conducted, comparing the results with literature findings. Ten different confluences from 45 ∘ to 90 ∘ were simulated to study the effects of the junction angle on the flow structure, using a numerical code that solves the 3D Reynolds Averaged Navier-Stokes (RANS) equations with the k- ϵ turbulence closure model. The results showed that the higher the junction angle, the …
Highly Functionalized Brønsted Acidic/Lewis Basic Hybrid Ferrocene Ligands: Synthesis and Coordination Chemistry
2019
International audience; A general challenging issue in the synthesis of hemilabile ferrocene ligands is the access to highly functionalized ferrocene starting materials. These can bear donor/acceptor atoms, additional functional and structuring spectator substituents, but the preparation of such species poses general synthetic difficulties. We report herein alternative synthetic routes to hybrid ferrocene donors such as tert-butylated phosphanylcarboxylic acids and their corresponding aldehydes. These hybrid ambiphilic species that combine Brønsted-acidic and Lewis-basic functional moieties in their structure were characterized by multinuclear NMR and single-crystal X-ray diffraction analys…
2-Chloro/phenyl-7-arylimino-6,6-dimethylcyclopenta[b]pyridylnickel chlorides: Synthesis, characterization and ethylene oligomerization
2017
Abstract 2-Chloro/phenyl-7-arylimino-6,6-dimethylcyclopenta[b]pyridylnickel chlorides (Ni1–Ni8) were synthesized from the respective ligands L1–L8 and characterized. Upon activation with either methylaluminoxane (MAO) or ethylaluminium sesquichloride (EASC), they show high catalytic activity of up to 10.84 × 106 g(oligomer) mol− 1(Ni) h− 1 in ethylene oligomerization. The products range from butenes to dodecenes for Ni1–Ni4, but are limited to butenes and hexenes in the case of Ni5–Ni8. DFT calculations indicate that the Ni C bond length in the model alkyl complexes depends both on the nature of the substituents at the heterocycles and the kind of the alkyl group, shedding some light on the…
Cognitive Structuring and Its Cognitive-Motivational Determinants as an Explanatory Framework of the Fear-Then-Relief Social Influence Strategy
2017
According to the fear-then-relief technique of social influence, people who experience anxiety whose source is abruptly withdrawn usually respond positively to various requests and commands addressed to them. This effect is usually explained by the fact that fear invokes a specific program of action, and that when the source of this emotion is suddenly and unexpectedly removed, the program is no longer operative, but the person has not yet invoked a new program. This specific state of disorientation makes compliance more likely. In this paper, an alternative explanation of the fear-then-relief effect is offered. It is assumed that the rapid change of emotions is associated with feelings of …
CAMPANIAN WINE FOR PUNIC SICILY: PETROGRAPHIC AND ARCHAEOLOGICAL STUDIES OF GRAECO-ITALIC AMPHORAE FROM PALERMO
2018
This contribution proposes a combination of archaeological fabric analysis and petrographic research applied to the study of 35 sherds of Graeco-Italic amphorae mostly found in Palermo, but also in Pantelleria and Malta (Tab. 1). The provenance identification derived from both approaches gives evidence for the arrival, in North-Western Sicily, of presumable wine amphorae from central-Tyrrhenian Italy since the very late 4th century BC. The production of the majority of the material has been confidentially attributed to the area of the Gulf of Naples/Ischia, but a second large group originates from several, still unidentified production sites to be located along the coastal strip of Campania…
Personal branding, redes sociales e influencers
2021
Desde la irrupción de Internet y las nuevas tecnologías de información, el personal branding ha experimentado una evolución sin precedentes gracias a la inmediatez que ofrecen las redes sociales y la comu nicación 2.0. El proceso de creación de la imagen personal adquiere una relevancia cada vez más notoria siendo una herramienta de comu nicación utilizada tanto por las empresas como por los usu arios de redes sociales, en especial por parte de los influencers que ejercen una influencia directa entre los consum idores. La investigación presentada describe la importancia que ha tenido Internet, y en particular plataformas como los blogs y las redes sociales como Instagram, en lo que tiene qu…
L’influence politique de Versailles sur la noblesse lituanienne à la fin du XVIIe siècle
2021
In the second half of the seventeenth century, French diplomacy dominated Europe, including the Polish-Lithuanian state and its most important aristocratic families. The reports of French diplomats described their encounters with the most eminent families of the Grand Duchy of Lithuania: the Sapiehas and Radziwiłłs (the most powerful), the Pacs, Wiśniowieckis and Ogińskis. Through them, Versailles sought to implement its policy in the Polish-Lithuanian state, and win these allies through (usually honoured) promises of money. The goal was to support a French candidate to the Polish throne and to prevail against Vienna and Berlin on the European political chessboard. While efforts to cooperat…
Global social knowledge management: from barriers to the selection of social tools
2013
Web 2.0 and Social Software revolutionize the knowledge exchange within and between organizations. This is one of the claims consultants and software vendors in the field have made. But have the promises been kept and has evidence been achieved so far, in particular for knowledge management in globally distributed settings? As a starting point, our paper introduces the field of Global Social Knowledge Management (GSKM). We see this area as one of the main research area for future research in the Knowledge Management domain. A variety of social software applications have already been seen promising and incorporated into the context of knowledge management (Avram 2006; Zheng and Zheng 2010; L…
Pleasure of eating: a lever for the adoption of healthy eating in children
2018
Childhood obesity, despite a recent stabilization, is still a matter of concerns in the European region and elsewhere (WHO, 2017), i.e. in France (where it concerned 17% of 3-14 y-old children in 2015; INCA3). Since many years, public health campaigns have encouraged healthy eating in many countries over the world, in particular by highlighting the beneficial effect on health of some food groups (e.g., in France “For your health, eat five fruits and vegetables a day”). However, the WHO noted in 2017 that among adolescents, “daily consumption of fruit and vegetables increased slightly between 2002 and 2014, but overall prevalence remains low ; and daily consumption of sugary soft drinks and …
Communication politique et réseaux sociaux: les élections présidentielles 2014 en Roumanie sous la loupe de Twitter et de Facebook
2015
Dans cet article nous proposons d’étudier l’utilisation des réseaux socio-numériques (essentiellement Facebook et Twitter) à des fins de communication politique dans le contexte spécifique des élections présidentielles qui ont eu lieu en Roumanie entre le 2 et le 16 novembre 2014. Nous essaierons de déterminer l’efficacité du recours à ces réseaux dans la communication des candidats et l’influence qu’ils ont pu exercer sur l’issue de la campagne. In this article we propose to study the use of socio-digital networks (mainly Facebook and Twitter) for the purpose of political communication in the specific context of the presidential elections were held in Romania between 2 and 16 November 2014…