Search results for "RNS"
showing 10 items of 1387 documents
Sensor Properties of Pristine and Functionalized Carbon Nanohorns
2016
Nanodispersions of pristine single-wall carbon nanohorns (i.e., p-SWCNHs) and oxidized-SWCNHs (i.e.; o-SWCNHs) were used to modify screen printed electrode (SPE). p-SWCNHs and o-SWCNHs were fully characterized by using several analytical techniques, as: HR-TEM (High Resolution-Transmission Electron Microscopy), FE-SEM/EDX (Field Emission-Scanning Electron Microscopy/Energy Dispersive X-ray Analysis), Raman spectroscopy, thermogravimetric analysis, differential thermal analysis (DTA), and the Brunauer-Emmett-Teller (BET) method. The chemically modified SPEs were also characterized with Cyclic Voltammetry (CV), using several different electro-active targets. In all cases, p-SWCNHs showed bett…
Modelling the transport of carbonic acid anions through anion-exchange membranes
2003
Electrodiffusion of carbonate and bicarbonate anions through anion-exchange membranes (AEM) is described on the basis of the Nernst � /Planck equations taking into account coupled hydrolysis reactions in the external diffusion boundary layers (DBLs) and internal pore solution. The model supposes local electroneutrality as well as chemical and thermodynamic equilibrium. The transport is considered in three layers being an anion exchange membrane and two adjoining diffusion layers. A mechanism of
Diagnóstico y tratamiento del trastorno por déficit de atención/hiperactividad: diferencias entre entrevista clínica y prueba psicométrica
2011
Dada la prevalencia del trastorno por déficit de atención e hiperactividad (TDAH) en la infancia y adolescencia y las difi- cultades diagnósticas que se evidencian tanto en la práctica clínica como en la literatura1, se planteó un estudio para analizar la concordancia entre los diagnósticos realizados mediante entrevista clínica en pediatría de atención primaria y los realizados en una unidad de salud mental de infancia y adolescencia (USMIA) mediante evaluación psicométrica y entrevista; además, se evaluó la relación entre el tipo de TDAH diagnosticado en la USMIA y el tratamiento prescrito desde esta unidad.
La Casina cinese alla Favorita di Palermo: un'ipotesi di lettura.
2016
L'articolo verte su un'ipotesi interpretativa della componente decorativa della Casina cinese alla Favorita di Palermo basata sulla componente "alla cinese" e su una sua densa natura confuciana. The paper offers a hypothesis of interpretation of the decorative patterns of the Casina cinese at the Favorita Park in Palermo which is based on the component "in Chinese style" that is characterized by a strong Confucian element.
Umbilical venous catheters placement evaluation on frontal radiogram: application of a simplified flow-chart for radiology residents
2017
Background: Umbilical Venous Catheter (UVC) are commonly used in neonatal period; they can be not correctly positioned and could be associated with complications. The purpose of this article is to suggest a flow-chart to evaluate the placement of UVC, testing it in young radiologists-in-training. Method: We developed a simple flow-chart to asses, steps by step, UVC placement considering its course and tip location (ideally placed in the atriocaval junction). We tested the flow-chart impact asking to 20 residents to evaluate the placement of 10 UVC before and after they familiarized with the flow-chart and the anatomical findings of a newborn. The agreement among the 20 students was evaluate…
Reviewing the identity of the Maltese Polypodium (Polypodiaceae) – new evidence from morphology and flow cytometry
2020
The first record of Polypodium from Gozo (Maltese Islands) was described as a new endemic taxon, Polypodium vulgare subsp. melitense, based on its unique set of morphological characters. It was treated as a novelty and designated as a subspecies of P. vulgare mainly due to the lack of paraphyses, the presence of 10–16 annular cells, and a mean spore length of 64 μm. The fern was reassessed by us employing a more rigid morphological analysis and the application of flow cytometry. The absence of paraphyses was confirmed, but the number of annular cells (5–11) and the spore length (70–79 μm) differed from the previous study. These and other morphological traits, the phenology (leaf-shedding in…
Electric field enhanced water dissociation at the bipolar membrane junction from ac impedance spectra measurements
1998
Abstract Preliminary experimental results of the ac impedance spectra of a bipolar ion-exchange membrane are reported and interpreted on the basis of a previous theoretical model based on the Nernst–Planck/Poisson equations. It is shown that the experiments can provide valuable electrochemical information about the bipolar junction structure and the electric-field enhanced water dissociation phenomenon that occurs at this junction, although the high number of unknown parameters involved makes it difficult to obtain accurate values for the parameters characteristic of this phenomenon.
陈敬容翻译波德莱尔诗歌九首：词汇及翻译策略选择 (Chen Jingrong translates nine poems by Baudelaire: words and translation strategies)
2014
L'articolo entra nel merito delle scelte traduttive della poetessa Chen Jingrong nella traduzione dal francese al cinese di nove poesie di Baudelaire tratte da "Les Fleurs du Mal". The article describes the translation choices of the woman poet Chen Jingrong in translating 9 poems by Baudelaire selected from "Les Fleurs du mal"
Norwegian children's acquisition of the dialect feature r
2019
The pronunciation of r is a central dialect feature of Norwegian. The main division is between a front and a back pronunciation. The back realization is acquired relatively early (around age 4), while the front realization is one of the most problematic sounds to acquire, and substitution sounds are frequent. Using two data collection points, we show how four children learning Norwegian start by substituting r use of the r of their dialect area or idiolectal surroundings. The main argument of this article is that the r-development of kindergarten children is not only governed by rules on acquisition and development lines, but also by the sociolinguistic variation and use of r in the Norwegi…
Assessing the Energy-Saving Potential of a Dish-Stirling Concentrator Integrated into Energy Plants in the Tertiary Sector
2021
Energy consumed for air conditioning in residential and tertiary sectors accounts for a large share of global use. To reduce the environmental impacts burdening the covering of such demands, the adoption of renewable energy technologies is increasing. In this regard, this paper evaluates the energy and environmental benefits achievable by integrating a dish-Stirling concentrator into energy systems used for meeting the air conditioning demand of an office building. Two typical reference energy plants are assumed: (i) a natural gas boiler for heating purposes and air-cooled chillers for the cooling periods, and (ii) a reversible heat pump for both heating and cooling. For both systems, a dis…