Search results for "api"
showing 10 items of 8586 documents
Studio della cinetica di assorbimento di fluidi in mezzi porosi tramite Imaging a Risonanza Magnetica Nucleare
2007
In questo lavoro, la tecnica di Imaging a Risonanza magnetica Nucleare (MRI) è stata impiegata per studiare in modo quantitativo, non invasivo, non distruttivo, la cinetica di assorbimento capillare di acqua in campioni di Pietra di Lecce, una biocalcarenite omogenea nella quale il fronte di bagnamento avanza pressoché piatto. MRI permette di misurare in funzione del tempo l’altezza raggiunta dal fronte in qualunque sezione interna del campione. Al fine di studiare l’anisotropia del fenomeno dovuta ad eventuali strati sedimentari, alcuni esperimenti sono stati effettuati variando l’asse principale di assorbimento (ortogonale al piano dove avviene l’assorbimento) attraverso la semplice rotaz…
Understanding formability and geometrical accuracy of SPIF process used as reshaping approach
2021
Putting in place Circular Economy strategies is an urgent action to be undertaken. Manufacturing processes play a relevant role as efficient material reuse enabler. Scientists have to make an effort either to find new process or to rethink old process to reprocess End-of-life (EoL) components to recover both material and functions. In this paper, Single Point Incremental Forming (SPIF) process is used for reshaping sheet metal EoL components. Deep drawing process as well as uniaxial pre-straining (to imitate the End-of-Life component) followed by SPIF operations (to obtain the reshaped components) are set- up and implemented to form and reform aluminum sheet metal components. As the authors…
An energy efficiency analysis of single point incremental forming as an approach for sheet metal based component reuse
2020
Producing materials causes about 25% of all anthropogenic CO2 emissions. Metals play a significant role, steel and aluminum account for 24% and 3% of worldwide material related emissions respectively. Fostering resources efficiency strategies in the field of sheet components could lead to a significant environmental impact reduction. Reshaping could be one of the most efficient strategy to foster material reuse and lower the environmental impact due to material production. Specifically, for aluminum recycling, the overall energy efficiency of conventional route is very low and, more importantly, permanent material losses occur during re-melting because of oxidation. The present paper aims a…
Periapical surgery of maxillary posterior teeth : A review of the literature
2006
En los últimos años, la cirugía periapical ha evolucionado gracias a la incorporación de avances diagnósticos y técnicos. El objetivo del presente artículo es realizar una revisión bibliográfica de los trabajos publicados sobre cirugía periapical en los dientes antrales; hemos revisado el Medline y las revistas españolas de Odontología desde 1974 hasta el 2003. Comentamos la anatomía del seno maxilar, el diagnóstico de las lesiones periapicales y la relación del seno maxilar con los dientes antrales; también la técnica quirúrgica, sus consideraciones especiales, y el pronóstico de la cirugía periapical en estos dientes. Los trabajos recientes plantean que la proximidad de los dientes antral…
Virtual network, emotional capital and social movements
2019
In the first chapter, I examine the strong impact of social media on the creation of virtual communities and if and how mobile technology and social networks represent elements for relational occasions, in order to and build of bridging social capital. Relational occasions are the bridges that individuals use and “cross” to create sharing on issues of social interest. Social media transform the traditional characteristics of so- cial relationships in the pre-digital age. The way technology is used changes the quality, frequency, availability, selection and exit mechanisms of social relationships. In this way, social re- lationships modify the mechanisms that generate social and emotional ca…
Social capital of Ukrainian society after the Revolution of Dignity
2021
This article is devoted to the issue of the social capital of Ukrainian society a few years after the Revolution of Dignity. Its basic goal is to try to answer the question of whether the society, which at the turn of 2013 and 2014 coordinated its activities in order to achieve the common goal: the removal of the former government, set the pro-Western course. Indeed, a civil society was characterized by permanent resources of social capital. In order to get the answer to this question, the article analyses a number of indicators that are customarily related to social capital, such as: the level of trust in individual state and social institutions, the level of involvement in volunteering an…
Rational Foundations of Democratic Politics
2003
1. Introduction Albert Breton, Gianluigi Galeotti, Pierre Salmon and Ronald Wintrobe Part I. Some Problems with Democratic Institutions and Trends in Their Evolution: 2. Demobilization, demoralization and the loosening bonds of electoral politics Michael C. Munger 3. Turning 'citizens' into 'consumers': economic growth and the level of public discourse Stergios Skaperdas 4. Economic and cultural prerequisites for democracy Roger D. Congleton 5. Civil society and the contemporary social order Frederique Chaumont-Chancelier Part II. Morals in Politics: 6. When does altruism overcome the intransitivity of income redistribution? Donald Wittman 7. Democratic resilience and the necessity of virtu…
Décès d'un associé : absence d'effet rétroactif de l'agrément de l'héritier et pouvoirs du gérant pendant la procédure
2018
International audience; Note sous Cour de cassation (com.), 3 mai 2018, n° 15-20.851 (F-P+B)
Electrokinetic capillary chromatography in a polar continuous‐phase water‐in‐oil microemulsion constituted by water, sodium dodecyl sulfate, and n ‐p…
2005
A water-in-oil (w/o) microemulsion (ME) constituted by 15% Tris buffer, pH 8.4, in water and 85% sodium dodecyl sulfate (SDS)/n-pentanol 1:4 mixture, capable of dissolving up to 30% vegetable oils and lard, was used as background electrolyte in reverse microemulsion electrokinetic capillary chromatography (RMEEKC). Owing to the free SDS ions in the continuous phase and some degree of percolation, the ME showed a high conductivity (0.65 mS. cm(-1) at 25 degrees C) and sustained a very stable capillary current. Previous rinsing of the capillary with a quaternary ammonium salt for electroosmotic flow (EOF) reduction, a series of nonionic and anionic solutes dissolved either in the ME or in fat…
In vitro P-glycoprotein efflux inhibition by atypical antipsychotics is in vivo nicely reflected by pharmacodynamic but less by pharmacokinetic chang…
2011
Abstract Background P-glycoprotein (P-gp), an efflux transporter of the blood–brain barrier, limits the access of multiple xenobiotics to the central nervous system (CNS). Thus drug-dependent inhibition, induction or genetic variation of P-gp impacts drug therapy. Methods We investigated atypical antipsychotics and their interaction with P-gp. Amisulpride, clozapine, N-desmethylclozapine, olanzapine, and quetiapine were assessed in vitro on their inhibitory potential and in vivo on their disposition in mouse serum and brain, and behaviourally on the RotaRod test. In vivo wildtype (WT) and mdr1a/1b double knockout mice (mdr1a/1b (−/−, −/−); KO) were investigated. Results In rhodamine 123 eff…