Search results for " Protection."
showing 10 items of 925 documents
CT exposure in adult and paediatric patients: a review of the mechanisms of damage, relative dose and consequent possible risks.
2014
An increase has been observed not only in the absolute number of CT examinations but also in the length of coverage and number of scanning phases, with the result that exposure to ionising radiation from CT is becoming an increasingly serious problem. The extent of the problem is not entirely known and cannot be adequately addressed without proper knowledge of all the phases that leads to the effective dose calculation. In light of the growing awareness of the issue of ionising radiation dose and the possible risk for the individual and the population, there is a need for radiologists, medical physicists and radiographers to play an active role in dose management. In this review, the author…
Fetal dose measurements and shielding efficiency assessment in a custom setup of (192)Ir brachytherapy for a pregnant woman with breast cancer.
2015
To assess the radiation dose to the fetus of a pregnant patient undergoing high-dose-rate (HDR) (192)Ir interstitial breast brachytherapy, and to design a new patient setup and lead shielding technique that minimizes the fetal dose.Radiochromic films were placed between the slices of an anthropomorphic phantom modeling the patient. The pregnant woman was seated in a chair with the breast over a table and inside a leaded box. Dose variation as a function of distance from the implant volume as well as dose homogeneity within a representative slice of the fetal position was evaluated without and with shielding.With shielding, the peripheral dose after a complete treatment ranged from 50 cGy at…
Cannabinoid and nitric oxide signaling interplay in the modulation of hippocampal hyperexcitability: study on electrophysiological and behavioral mod…
2015
A growing bulk of evidence suggests that cannabinoid system plays a pivotal role in the control of hyperexcitability phenomena. Notwithstanding, the anticonvulsant action of cannabinoids has not been fully addressed, in particular the involvement of potential cellular neuromodulators, for instance nitric oxide. In the current study, we focused on two distinct rat models of temporal lobe epilepsy, the Maximal Dentate Activation and the pilocarpine-induced acute seizures, providing both electrophysiological and behavioral data on cannabinoid and nitrergic system interplay. We evaluated the antiepileptic effects of WIN 55,212-2, (R)-(+)-[2,3-dihydro-5-methyl-3-(4- morpholinylmethyl) pyrrolo[1,…
Assessing the impact of agri-environmental schemes on the eco-efficiency of rain-fed agriculture
2012
This paper analyses the impact of the Agri-environmental Extensification Scheme for the Protection of Flora and Fauna (F&F Scheme) on the eco-efficiency of a sample of dryland farms in the Spanish region of Castile and Leon. Using Data Envelopment Analysis (DEA) and the so-called program decomposition approach to efficiency measurement, we explore whether or not the production technology of the farms included in the F&F Scheme is more eco-efficient than the technology used by farms that are not included in the Scheme. The re-sults obtained confirm the foregoing hypothesis, providing evidence that environmental pres-sures could be reduced if all farms adopted the F&F Scheme technology. Furth…
PASSENGER NAME RECORD (PNR)
2018
Lo scritto prende in esame la questione relativa al trattamento e al trasferimento dei dati personali dei passeggeri (PNR) nel trasporto aereo, con lo scopo di combattere il terrorismo internazionale e la criminalità transnazionale. La questione è stata molto dibattuta a livello europeo, a partire dal primo accordo tra USA-Ue nel 2004, poi abrogato dalla Corte di giustizia Ue, sino ai tempi più recenti, con l’approvazione della direttiva 681/2016 e il parere 1/15 del 2017 della Corte di giustizia sulla compatibilità tra l’accordo Ue-Canada e il vigente quadro normativo dell’Ue, successivo all’entrata in vigore del trattato di Lisbona e della Carta dei diritti fondamentali dell’Unione europe…
Annoyance due to residential road traffic and aircraft noise: Empirical evidence from two European cities
2021
Based on a study in two European cities, Mainz in Germany and Zurich in Switzerland, the article investigates both acoustical and non-acoustical factors affecting indoor annoyance due to residential road traffic and aircraft noise. We specifically focus on three factors: (1) the role of windows as a feature of the building where people live; (2) the role of individual environmental concern as a general attitude; and (3) the role of household income as an indicator of socioeconomic resources. Empirical results show that closed windows in general and closed high-quality windows in particular are an important barrier against outdoor road traffic and aircraft noise, as well as a helpful subject…
Gli anfiteatri di Campania e Sicilia, 'pietre miliari' nella storia della tutela in età borbonica. Amphitheatres of Campania and Sicily, ‘milestones’…
2017
Il breve studio vuole essere occasione per richiamare le vicende legate alla progressiva salvaguardia del patrimonio culturale dell'Italia meridionale, al tempo dei Borbone. Sottolineando l'opportunità di riprendere, in un disegno complessivo, il quadro relativo ai due regni - di Napoli e di Sicilia - per le interrelazioni ancora da studiare e porre in evidenza, il saggio si sofferma in modo specifico sulle ricadute che le azioni condotte sugli anfiteatri campani avevano su quelli siciliani. Si è ripercorso l'iter di tutela e restauro degli anfiteatri e dei teatri di Catania e Siracusa, alla luce di una chiave critica e interpretativa formulata nel secondo Novecento, relativa al progressivo…
Sperm survival assay for toxicity evaluation in ultrasound gels and vaginal lubricants used in reproductive medicine
2016
Biochemische Hirnprotektion
1997
Comparative study of protective coatings for the conservation of Urban Art
2020
Abstract Contemporary mural paintings are complex artworks for several reasons, including the heterogeneity of the materials used to make them, and the different types of substrate on which the painting layers can be applied. Currently we are focused on a technical-scientific research aimed to solve the issues related to the long-term care and maintenance of murals, by evaluating the performance of several protective coatings applied on these artworks. This paper deals with a preliminary experimentation aimed to: (a) study the interaction of antigraffiti products on common synthetic paints; (b) test the effectiveness and efficiency of several commercial products used as antigraffiti; (c) de…