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showing 10 items of 2807 documents
LA CALIFICACIÓN DE LOS ESTABLECIMIENTOS PERMANENTES EN LAS OPERACIONES INTRACOMUNITARIAS: LAS TRANSFERENCIAS DE BIENES, LAS VENTAS DE BIENES EN CONSI…
2021
La calificación como establecimiento permanente o no de un almacén, depósito o centro logístico por un proveedor extranjero en el Estado miembro de llegada de los bienes introducirá una pluralidad de escenarios distintos en sede del IVA. El análisis conjunto de las transferencias de bienes, los Acuerdos de Venta de Bienes en Consigna (AVBC) y las operaciones triangulares, a la luz de la noción de 'establecimiento permanente' y su problemática jurisprudencial, permitirá visualizar cómo la presencia de un almacén o estructura similar va a influir en la determinación del sujeto pasivo y en las reglas de tributación de estas operaciones intracomunitarias.
Fast simultaneous determination of prominent polyphenols in vegetables and fruits by reversed phase liquid chromatography using a fused-core column
2015
A reversed-phase high-performance liquid chromatography method with photodiode array detection has been developed enabling the joint determination of 17 prominent flavonoids and phenolic acids in vegetables and fruits. A multi-segmented gradient program using a fused-core column for the separation of several phenolic classes (phenolic acids and flavonoids) has been optimised. The influence of extraction conditions (sample freeze-drying, ultrasound extraction, solvent composition and extraction time) has been also optimised using response surface methodology with tomato samples as a model. Complete recoveries (76-108%) were obtained for the phenolic compounds present in tomato. The developed…
Color Stabilization of Apulian Red Wines through the Sequential Inoculation of Starmerella bacillaris and Saccharomyces cerevisiae
2021
Mixed fermentation using Starmerella bacillaris and Saccharomyces cerevisiae has gained attention in recent years due to their ability to modulate the qualitative parameters of enological interest, such as the color intensity and stability of wine. In this study, three of the most important red Apulian varieties were fermented through two pure inoculations of Saccharomyces cerevisiae strains or the sequential inoculation of Saccharomyces cerevisiae after 48 h from Starmerella bacillaris. The evolution of anthocyanin profiles and chromatic characteristics were determined in the produced wines at draining off and after 18 months of bottle aging in order to assess the impact of the different f…
HTML5 tablet uutissovelluksen suunnittelu ja toteutus
2013
Keskipohjanmaa-lehdestä haluttiin toteuttaa web-pohjainen, HTML5:tä hyödyntävä tablet-uutissovellus Keski-Pohjanmaan Kirjapaino Oyj:lle. Työssä tut- kittiin uusimpia web-teknologioita, kannettavia laitteita, web-sovelluksen tekemis- tä ja tablet-sovelluksen luomista sanomalehdestä. Työn aikana toteutettiin kolme prototyyppiä ja kaksi virallista tablet-sovellusversiota. Ensimmäisessä virallisessa versiossa rakenne ja data olivat yhdessä sekä osa sovelluslogiikasta oli palvelimen koodissa. Toisessa versiossa data ja rakenne olivat erillään ja sovelluslogiikka oli tehty Javascriptillä. Tehdessä web-sovellusta tablet-laitteille selvisi, että on huomioi- tava suorituskyky ja Internet-selainten e…
An exploration of isotopic variability in feathers and claws of Lesser Kestrel Falco naumanni chicks from southern Sicily
2016
Stable isotopes are nowadays commonly used in the study of many key features of avian ecology. However, the adequate choice of what isotopic ratio to consider and what tissues to sample for assessing specific questions may be tricky. Here, we explored the variation in a suite of stable isotope ratios (δ13C, δ15N, δ34S, δ2H, δO) in the feathers and claws of chicks of Lesser Kestrels Falco naumannifrom south-eastern Sicily (Italy) sampled throughout colonies of the same population but surrounded by different habitats. Ouraimsare to provide an insight into the isotopic ecology of Lesser Kestrel and to provide methodological indications for futurestudies.Specifically,we tested whether stable is…
2018
Tetrel bonding is the noncovalent interaction of group IV elements with electron donors. It is a weak, directional interaction that resembles hydrogen and halogen bonding yet remains barely explored. Herein, we present an experimental investigation of the carbon-centered, three-center, four-electron tetrel bond, [N–C–N]+, formed by capturing a carbenium ion with a bidentate Lewis base. NMR-spectroscopic, titration-calorimetric, and reaction-kinetic evidence for the existence and structure of this species is reported. The studied interaction is by far the strongest tetrel bond reported so far and is discussed in comparison with the analogous halogen bond. The necessity of the involvement of …
SYSTOLIC GENERATION OF k-ARY TREES
1999
The only parallel generating algorithms for k-ary trees are those of Akl and Stojmenović in 1996 and of Vajnovszki and Phillips in 1997. In the first of them, trees are represented by an inversion table and the processor model is a linear aray multicomputer. In the second, trees are represented by bitstrings and the algorithm executes on a shared memory multiprocessor. In this paper we give a parallel generating algorithm for k-ary trees represented by generalized P–sequences for execution on a linear array multicomputer.
Development and validation in a group of industry workers, of an application for audiometric screening: A solution for social distance during COVID-1…
2020
In the context of the global COVID-19 pandemic, companies and institutions all over the world are trying to find the best ways to reorganize their activity, minimizing the contagion risk among their employees, so as to protect their health and prevent internal SARS-COV-2 outbreaks. The recent development of new communication technologies, such as smartphones and tablets, has paved the way for the development and implementation of different applications. Starting with the above issues, in this study, we wanted to investigate the efficacy of iAudiometry application developed by our research team for the detection of deficits in the auditory system. Furthermore, we analyzed the precision in de…
Trace Element Concentration and Stable Isotope Ratio Analysis in Blueberries and Bilberries: A Tool for Quality and Authenticity Control
2021
Vaccinium genus berries—wild bilberries (Vaccinium myrtillus L.) and cultivated highbush blueberries (Vaccinium corymbosum L.)—are consumed worldwide, and their consumption has a trend of stable increase. Thus, considering their wide use in ethnomedicine, for juice and jam production, as functional food, as well as their use in preparations of extracts which have application potential in pharmaceutical and cosmetics industries, studies regarding the composition of these berries are of special importance. The aim of this study is to characterise the elemental and isotopic composition, as well as variation in element concentration in bilberries gathered from different sites in Northern Europe…
Spectral Density Estimate for Stable Processes Observed with an Additive Error
2018
International audience; In this paper, a symmetric alpha stable process where its spectral representation has an additive error is considered. The error is supposed to be constant. A periodogram as estimator of the spectral density and its rate of convergence are given. In order to give an asymptotically unbiased and consistent estimate of the spectral density, this periodogram is smoothed by an adapted spectral window. The rate of convergence is given.