Search results for "Forming"
showing 10 items of 1719 documents
Comparison between aluminum alloys behavior in incremental sheet metal forming process of frustum pyramid shaped parts
2021
Abstract Single point incremental forming is a new emerging technology, used mainly for prototype development or small series production, with good prospects in industrial implementation. However, the parts manufactured through this process often presents low accuracy, thus the industrial implementation is yet limited. Incremental forming process can be done with the help of different technological equipment, such as industrial robots and numerically controlled machines. Since the process is still in development phase, it is a good practice to use finite element analysis software packages in order to reduce time and costs to produce accurate parts. The aim of this paper is to investigate th…
Methanol fuel processor and PEM fuel cell modeling for mobile application
2010
International audience; The use of hydrocarbon fed fuel cell systems including a fuel processor can be an entry market for this emerging technology avoiding the problem of hydrogen infrastructure. This article presents a 1 kW low temperature PEM fuel cell system with fuel processor, the system is fueled by a mixture of methanol and water that is converted into hydrogen rich gas using a steam reformer. A complete system model including a fluidic fuel processor model containing evaporation, steam reformer, hydrogen filter, combustion, as well as a multi-domain fuel cell model is introduced. Experiments are performed with an IDATECH FCS1200™ fuel cell system. The results of modeling and experi…
An evaluation study on the embedding of reflective practice in the further education programme KigaDance for nursery teachers
2020
This article deals with the connection between theory and practice in the context of a further education programme (FEP) (KigaDance) for nursery teachers based on contemporary dance education. The ...
Un viaje de ida y vuelta al otro mundo. El Cabaret del Diavolo de Gino Gori y Fortunato Depero en Roma (1922-1925)
2023
The Roman cabarets linked to Futurism were meeting places where the programme of the manifesto Ricostruzione futurista dell’universo was applied. Following the experiences of Bragaglia and Marchi at the Circolo delle Cronache d’Attualità and the setting by Giacomo Balla at the Bal Tic Tac, the entrepreneur and poet Gino Gori commissioned Fortunato Depero to decorate the Cabaret del Diavolo. Based on Dante’s Commedia, Depero would create an integral design of three spaces that configured an allegorical inverted reading of the Florentine poet’s journey to the afterworld. Its originality and careful advertising made the cabaret one of the representative spaces of the Roman nightlife which, des…
Simulation of the dynamics of hard ellipsoids
2008
We study a system of uniaxial hard ellipsoids by molecular dynamics simulations, changing both the aspect-ratio X-0 (X-0 = a/b, where a is the length of the revolution axis and b is the length of the two other axes) and the packing fraction phi. We calculate the translational and rotational mean squared displacements, the translational D-trans and the rotational D-rot diffusion coefficients and the associated isodiffusivity lines in the phi - X-0 plane. For the first time, we characterize the cage effect through the logarithmic time derivative of log and log . These quantities exhibit a minimum if the system is supercooled and we show that, consistently with our previous findings, for large…
Comparative analysis of DNA breakage, chromosomal aberrations and apoptosis induced by the anti-herpes purine nucleoside analogues aciclovir, gancicl…
2002
Nucleoside analogues have been used in antiviral therapy and suicide cancer gene therapy. Therefore, it is of importance to compare their potential cytotoxic and genotoxic action. Using metabolically competent CHO cells expressing the thymidine kinase gene of herpes simplex virus type 1 (CHO-HSVtk cells) as a model system, the induction of DNA breaks was compared with the induction of structural chromosomal aberrations and apoptosis/necrosis after exposure to the anti-herpes nucleoside analogues aciclovir (ACV), ganciclovir (GCV) and penciclovir (PCV). After continuous treatment of CHO-HSVtk cells with the drugs, LD(10) in a colony-forming assay was 50, 0.5 and 1 microM for ACV, GCV and PCV…
Development of injectable and durable kefiran hydro-alcoholic gels.
2020
Injectable, in-situ forming kefiran gels have been developed for potential applications as implantable drug delivery devices or scaffolds for tissue regeneration. Concentrated solutions (4, 5 and 6%w) of kefiran, extracted from kefir grains, have been assessed in term of viscosity and injectability through G26 syringe needles, and for their ability to undergo gelation upon mixing with different alcohols. Propylene glycol (PG) has been selected as gelling agent because it ensures homogenous gelation in relatively short times (from few minutes up to 6 h). The investigation of the rheological behavior of kefiran/PG gels varying polymer concentration and temperature (25 degrees C and 37 degrees…
Gendering political conflict: the racialized and dehumanized use of gender on Facebook
2021
Although attacks against gendered others have proliferated around the world, there remains a paucity of research examining the gender-biased climate that normalizes and condones racialization and d...
Cinematic images of nation-ness: Space, time and gender inYoung Eagles(Estonia) andLāčplēsis(Latvia)
2012
ABSTRACTIn this article, I analyse cinematic time and space and their interaction, in which nation-ness is articulated as a unifying identity in the epic films Lācplēsis/Bear-Slayer (Latvia, Aleksandrs Rusteiķis, 1930) and Noored Kotkad/Young Eagles (Estonia, Theodor Luts, 1927, digitally remastered in 2008). In discussing the timespace organization of nation-ness in these films, I address representations of the political ‘birth of a nation’ and modern national identity. I discuss the ways in which the narratives in Young Eagles and Lācplēsis re-claim a traditional gender binary, predicated on a splitting and differentiating relationship with Otherness, embodied in the sexual threat of male…
Professional activism in journalism and education in gender equality through Twitter
2021
This article analyses professional activism by women journalists' organisations which, through their Twitter accounts, contribute to extend the value of equality between men and women, which is activism that embodies the ethical or deontological codes of this profession. The tweets of these groups not only propose improvements in the expression and writing of news, after reporting biased, stereotypical or denigrating uses of language by large Spanish media, but also recognise and applaud contents that dignify women or place them in the public sphere that they deserve. A content analysis methodology was followed by applying both quantitative and qualitative analyses to a sample of 7,424 twee…