Search results for "DSA"
showing 10 items of 87 documents
EVASPA (EVapotranspiration Assessment from SPAce) tool: an overview
2013
International audience; Evapotranspiration (ET) is a fundamental variable of the hydrological cycle and its estimation is required for irrigation management, water resources planning and environmental studies. Remote sensing provides spatially distributed cost-effective information for ET maps production at regional scale. We have developed EVASPA too for mapping ET from remote sensing data at spatial and temporal scales relevant to hydrological or agronomica studies. EVASPA includes several algorithms for estimating evapotranspiration and various equations for estimating the required input information (net radiation, ground heat flux, evaporative fraction…), which provides a way to assess …
Dottore, mio figlio non impara a leggere”. I Disturbi Specifici dell’Apprendimento (DSA) e il pediatra di famiglia
2015
Si parla di Disturbo Specifico di Apprendimento (DSA) quando sono presenti delle difficoltà isolate e circoscritte nella lettura (Dislessia) e/o nella scrittura (Disortografia) e/o nel calcolo (Discalculia) nonostante la presenza di adeguate capacità cognitive e opportunità scolastiche. Tali difficoltà hanno carattere evolutivo e persistente, presentandosi con diversa espressività clinica nelle varie fasi dello sviluppo. La prevalenza mondiale del disturbo si attesta tra il 5 e il 15% (DSM 5, 2013). L’incidenza è maggiore nei maschi, con un rapporto M/F stimato intorno a 2:1, 3:1 (DSM 5, 2013). In Italia la stima di prevalenza dei DSA fra i bambini in età scolare oscilla fra il 3 e il 5% (C…
DSAEK sottile e ultrasottile
2014
Latviešu trimdas darbība Baltijas jautājuma aktualizācijā EDSA konferencēs 1975-1983
2022
Maģistra darbs “Latviešu Trimdas darbība Baltijas jautājuma aktualizācijā EDSA konferencēs 1975-1983” analizē Trimdas politiskās aktivitātes EDSA konferenču norises vietās. Pētījums par Trimdas politiskajām aktivitātēm balstīta Latvijas Valsts arhīvu materiālos, izmantoti arī iepriekš nepublicēti un nepētīti dokumentālie avoti. Darbā izmantota zinātniskā literatūra par Baltijas jautājumu, EDSA procesu un Trimdas kopienas izveidošanos. Pētījuma mērķis ir noskaidrot Trimdas nozīmi Baltijas jautājuma aktualizācijā. Secināts, ka Trimdas nozīme Baltijas jautājuma aktualizācijā ir būtiska. Trimda kā latvietības un neatkarības ideju uzturētājs Aukstā perioda periodā, ir svarīgs pētniecības objekts…
A Critical Comparison of Remote Sensing Leaf Area Index Estimates over Rice-Cultivated Areas: From Sentinel-2 and Landsat-7/8 to MODIS, GEOV1 and EUM…
2018
Leaf area index (LAI) is a key biophysical variable fundamental in natural vegetation and agricultural land monitoring and modelling studies. This paper is aimed at comparing, validating and discussing different LAI satellite products from operational services and customized solution based on innovative Earth Observation (EO) data such as Landsat-7/8 and Sentinel-2A. The comparison was performed to assess overall quality of LAI estimates for rice, as a fundamental input of different scale (regional to local) operational crop monitoring systems such as the ones developed during the "An Earth obseRvation Model based RicE information Service" (ERMES) project. We adopted a multiscale approach f…
Testing Multi-Sensors Time Series of Lai Estimates to Monitor Rice Phenology: Preliminary Results
2018
Timely and accurate information on crop growth and seasonal dynamics are increasingly needed to develop monitoring systems aimed to detect seasonal anomalies, support site specific management and estimate crop yield at the end of the season. In particular, frequent decametric information nowadays being provided exploiting the new generation of Earth Observation (EO) platforms are fundamental for farm level monitoring. This study presents an analysis aimed at fully exploiting dense time series of EO data derived from the combined use of ESA Sentinel-2A and NASA Landsat-7/8 imageries for crop phenological monitoring. Decametric Leaf Area Index (LAI) maps were generated for the year 2016 by in…
Electrochemical incineration of organic pollutants: effect of the nature of the pollutants and of the temperature
2009
The electrochemical oxidation of some organic pollutants, including three carboxylic acids (oxalic, formic and maleic), at boron doped diamond (BDD) and DSA anodes, using galvanostatic alimentation, was investigated in order to study the effect of the temperature and of the nature of the pollutants on the process. In incineration electrolyses, the performances of the process in terms of carboxylic acid conversion and current efficiency dramatically depend on the adopted operative conditions. The abatement of the organic pollutant depends on the nature of the carboxylic acid. Quite interestingly, the opposite effect of the nature of the substrate on the performances of the process was observ…
Electrochemical oxidation of organic pollutants in water at metal oxide electrodes: A simple theoretical model including direct and indirect oxidatio…
2009
Abstract The electrochemical oxidation of organics in water at metal oxide electrodes was investigated with the aim to discuss the correlations between the instantaneous current efficiency ICE and operative conditions by considering both the hypothesis of a direct oxidation process and of an indirect process mediated by adsorbed hydroxyl radicals or chemisorbed “oxygen”, in order to explicit the main differences expected between these cases. Thus, a simple theoretical model was discussed, as an extension of previous studies of Comnnellis and co-workers which were focused on indirect oxidation paths [C. Comninellis, Electrochim. Acta 39 (1994) 1857; O. Simond, V. Schaller, Ch. Comninellis, E…
Multitemporal mapping of peri-urban carbon stocks and soil sealing from satellite data.
2017
Abstract Peri-urbanisation is the expansion of compact urban areas towards low-density settlements. This phenomenon directly challenges the agricultural landscape multifunctionality, including its carbon (C) storage capacity. Using satellite data, we mapped peri-urban C stocks in soil and built-up surfaces over three areas from 1993 to 2014 in the Emilia-Romagna region, Italy: a thinly populated area around Piacenza, an intermediate-density area covering the Reggio Emilia-Modena conurbation and a densely anthropized area developing along the coast of Rimini. Satellite-derived maps enabled the quantitative analysis of spatial and temporal features of urban growth and soil sealing, expressed …
Electrochemical oxidation of organics in water: Role of operative parameters in the absence and in the presence of NaCl
2008
The electrochemical oxidation of organics in water was investigated theoretically and experimentally to determine the role of several operative parameters on the performances of the process in the presence and in the absence of sodium chloride. Theoretical considerations were used to design the experimental investigation and were confirmed by the results of the electrochemical oxidation of oxalic acid (OA) at boron doped diamond (BDD) or IrO(2)-Ta(2)O(5) (DSA-O(2)) anodes in a continuous batch recirculation reaction system equipped with a parallel plate undivided electrochemical cell. Polarization curves and chronoamperometric measurements indicated that, in the presence of chlorides, the a…