3,608 research outputs found
Economic Impact of Rural Development Plan 2007 2013 in Tuscany
In 2007 in every European Union region, involved in the planning of Rural Development Plan (RDP), an independent evaluator should asses the impact of the plan in term of value added and productivity. Each region has adopted different methodologies but few of them have followed the indications of Common and Monitoring Evaluation Framework (CMEF) to evaluate the net value deriving by direct and indirect effect. IRPET, the Independent evaluator of Tuscany, utilising REMI-IRPET model has assed the impact of RDP on the main economic variables until 2020. Among 30 different measures it has been chosen only 5 of them that cover more than 54% of total amount of public and private investments. The economic impacts are also evaluated at provincial level.evaluation, regional model, rural development, Community/Rural/Urban Development,
Potential Benefits of Remote Working on Urban Mobility and Related Environmental Impacts: Results from a Case Study in Italy
Remote working is increasingly seen as an effective model in several countries in the last decade, mainly thanks to the development of information and communication technologies in support of common daily working tasks. The emergence of the COVID-19 pandemic has represented a pivotal moment for the adoption of remote working in multiple sectors, with positive effects on the environmental impacts caused by the daily commuting of workers. However, due to the fact that pandemic-induced remote working has represented a major forced experiment on a global scale, and that it has often been imposed rather than chosen by employees, workers’ well-being has not always been ensured. This research work presents an analysis of a wide survey of remote workers in public administrations in four different provinces in Italy, with the aim of assessing the main characteristics of the users and the related environmental benefits. Survey data refer to remote workers before COVID-19, thus representing workers who have freely chosen to work from home for different reasons. The results of this work represent a useful tool with which to support the definition of new remote work strategies that could help policy makers reduce a part of the systematic mobility demand. We have also calculated average energy and emission savings to provide useful indicators for a preliminary estimation of the potential environmental benefits of remote working. Considering the entire sample of respondents, workers who would have commuted at least partially by car have saved on average 6 kg of CO2 per day thanks to remote working (with an average round-trip commuting distance of approximately 35 km). The current results will be supplemented by the results of a new survey underway, aimed at evaluating the differences of remote working experiences during the emergency response to COVID-19
Accuracy of three electronic apex locators in anterior and posterior teeth: an ex-vivo study.
Abstract
Introduction: The aim of this study was to determine in
anterior teeth, bicuspids, and molars (1) the accuracy of
3 different electronic apex locators (EALs) in detecting
the apical foramen and (2) the accuracy of digital radiography
in determining the working length (WL),
compared with visible control under a microscope.
Methods: By using radiovideography (RVG), we
measured the lengths of 120 root canals with 3 different
EALs (Endex, ProPex II, and Root ZX) and compared
them with the actual lengths. The accuracy of EALs
and RVG was related to each dental category. An
endodontic training kit (Pro-Train) was used during
experimental procedures. Results: Statistical analysis
showed that the 3 EALs and RVG were less accurate
in anterior teeth and molars than in bicuspids. The
paired-sample t test showed no statistically significant
difference between mesiodistal plane and buccolingual
plane digital radiography in all groups. Conclusions:
The 3 EALs tested were more accurate in detecting the
apical foramen in bicuspids than in both molars and
anterior teeth. Radiographic measurements were not
reliable for determining WL in all dental groups in
both radiographic planes. (J Endod 2011;37:684–687
Precisione nella determinazione della lunghezza di lavoro mediante localizzatori elettronici d’apice, radiologia digitale e prova visiva: presentazione di una nuova metodica sperimentale di indagine – uno studio ex-vivo. Exact determination of the working length by electronic apex locators, digital radiology, and visual test: presentation of a new experimental research strategy – an ex-vivo study.
Abstract
Objectives: This study compared: 1) the accuracy of three different electronic apex locators
(EALs) in detecting the apical foramen ex-vivo under clinical conditions; 2) the accuracy of digital
radiography and EALs in determining the K-file position in the root canal; 3) the accuracy of two
different radiographic planes; (4) the precision of #10, #15, and #20 K-files in electronic
measurements; 5) the precision of EALs in relation to the dental anatomy classification (anterior,
bicuspids, and molars).
Materials and methods: The length of 101 extracted human teeth was measured with three
different EALs (Endex, Propex II and Root ZX), with RVG and compared to the actual length.
Experimental procedures were performed using an endodontic training kit (Pro-Train).
Results: The statistical analysis showed that Endex and Propex II were more accurate than Root
ZX in determining the working length (WL). The t-test showed no statistically significant
difference of accuracy between the two radiographic planes examined. The t-test showed no
significant difference between the three different K-file size measurements. EALs and RVG are
less accurate in anterior teeth.
Conclusions: To prevent overestimation of the root canal length using the EALs tested, 1 mm
should be subtracted from the measurement on the ‘‘APEX’’ mark. Instrument sizes did not affect
the accuracy of EALs. EALs showed to be more accurate in determining the WL than RVG.
2011 Societa` Italiana di Endodonzia. Published by Elsevier Srl. All rights reserved
A Nexafs Study of Nitric Oxide Layers Adsorbed from a nitrite Solution onto a Pt(111) Surface
NO molecules adsorbed on a Pt(111) surface from dipping in an acidic nitrite
solution are studied by near edge X-ray absorption fine structure spectroscopy
(NEXAFS), X-ray photoelectron spectroscopy (XPS), low energy electron
diffraction (LEED) and scanning tunnelling microscopy (STM) techniques. LEED
patterns and STM images show that no long range ordered structures are formed
after NO adsorption on a Pt(111) surface. Although the total NO coverage is
very low, spectroscopic features in N K-edge and O K-edge absorption spectra
have been singled out and related to the different species induced by this
preparation method. From these measurements it is concluded that the NO
molecule is adsorbed trough the N atom in an upright conformation. The maximum
saturation coverage is about 0.3 monolayers, and although nitric oxide is the
major component, nitrite and nitrogen species are slightly co-adsorbed on the
surface. The results obtained from this study are compared with those
previously reported in the literature for NO adsorbed on Pt(111) under UHV
conditions
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