Search results for "GIF"
showing 10 items of 158 documents
Studio dei meccanismi di crescita dei frutti di due varietà di mango coltivate in ambiente mediterraneo
Coupled fixed point results in cone metric spaces for -compatible mappings
2011
Abstract In this paper, we introduce the concepts of -compatible mappings, b-coupled coincidence point and b-common coupled fixed point for mappings F, G : X × X → X, where (X, d) is a cone metric space. We establish b-coupled coincidence and b-common coupled fixed point theorems in such spaces. The presented theorems generalize and extend several well-known comparable results in the literature, in particular the recent results of Abbas et al. [Appl. Math. Comput. 217, 195-202 (2010)]. Some examples are given to illustrate our obtained results. An application to the study of existence of solutions for a system of non-linear integral equations is also considered. 2010 Mathematics …
First record of Icerya seychellarum and confirmed occurrence of Aulacaspis tubercularis (Hemiptera: Coccomorpha) in Italy
2020
The Seychelles scale, Icerya seychellarum (Westwood, 1855) (Hemiptera: Coccomorpha: Monophlebidae), is reported for the first time in Italy. Moreover, the occurrence of the white mango scale, Aulacaspis tubercularis (Newstead, 1906) (Hemiptera: Coccomorpha: Diaspididae), firstly reported in 1990 on mango trees growing outdoors in a nursery near Milazzo (Messina province, Sicily), and then intercepted in 2013 on mango plants imported from Florida (USA) to the Botanical Garden in Padova (Italy), is confirmed. Both species were found in two Sicilian mango orchards located in the province of Messina. Their introduction is most likely due to the orchards planting using infested mango nursery pla…
Antioxidation and the Hypoxic Ventilatory Response
2012
Reactive oxygen species favor the reductive state of iron. Antioxidation, by depleting biologically active ferrous iron, could then have a stabilizing effect, akin to hypoxia, on HIF-1α; the process which controls the genetic responses to hypoxia. However, the influence of antioxidation on the hypoxic ventilatory responses (HVR) is unclear. In this study we set out to determine the influence of mangiferin, a natural polyphenolic compound present in mango trees, with strong antioxidant and iron chelating properties, on the HVR. The study was performed in awake Wistar rats. Acute HVR to 12% and 8% FiO2 before and 40 min after mangiferin (300 mg/kg, i.p.) pretreatment were recorded plethysmogr…
Basal ice formation in snow cover in Northern Finland between 1948 and 2016
2018
Abstract Basal ice formation in the terrestrial snow cover is a common phenomenon in northern circumpolar areas, one having significant impacts on ecosystems, vegetation, animals and human activities. There is limited knowledge on the spatial and temporal occurrence of basal ice formation because of the sparse observation network and challenges involved in detecting formation events. We present a unique dataset on the annual extent of ice formation events in northern Finland between 1948 and 2016 based on reindeer herders’ descriptions of the cold season in their management reports. In extreme years, basal ice can form over wide geographical extents. In approximately half of the herding dis…
Networked Analysis of a Teaching Unit for Primary School Symmetries in the Form of an E-Book
2021
In mathematics education, technology offers many opportunities to enrich curricular contents. Plane symmetries is a topic often skipped by primary teachers. However, it is important and may be worked in attractive ways in dynamic geometry software environments. In any regular classroom there are students with different levels of mathematical attainment, some needing easy tasks while others, particularly mathematically-gifted students, need challenging problems. We present a teaching unit for plane symmetries, adequate for upper primary school grades, implemented in a fully interactive electronic book, with most activities solved in GeoGebra apps. The book allows student to choose which itin…
I RUSTICA MUNERA DI CORIDONE (A MARGINE DI VERG., ECL. 2, 45-55)
2022
Within the second Eclogue, the rustica munera offered by Corydon to Alexis (vv. 45-55), while obeying a somewhat conventional plot, reveal a complex intertextual stratigraphy. Unexpectedly, δωροφόροι of di vine rank join the shepherd in paying homage to the ephebe, bringing bas kets full of lilies and a garland of flowers and herbs, to which fruits and branches of laurel and myrtle will be added. The tradition of the rubrics of στεφανωτικὰ ἄνθη, testified by Athenaeus in the 15th book of the Deipno sophistae, allows us to test both the rate of conventionality of the entire ecphrasis, and the variations made by Vergil to the lists of flowers and herbs, as well as Greek poetry as well as genr…
Support for culture via crowdfunding in question: beyond motivations, an analysis of the barriers to participate
2017
In a context of strong budgetary pressure for non-market cultural organizations and of relative slowdown of crowdfunding campaigns in this sector, this reflection aims to provide a critical analysis of these new forms of financial support for culture. After drawing up a state of the art on the levers and obstacles to participation in such financing operations, the results of a qualitative study based on 43 individuals (donors and non-donors, familiar or not with cultural practices) will be exposed to highlight the diversity of misgivings about crowdfunding, beyond the traditional barriers attached to cultural gift, and the paradoxes that these calls for generosity arouse.
Dove va il pubblico impiego?
2011
Il saggio ripercorre in chiave storico evolutiva, e con taglio critico, il percorso a più fasi della della privatizzazione del lavoro alle dipendenze della p.a. Tale impostazione metodologica è preordinata all'analisi dei principali punti critici della riforma brunetta (d.lgs. n. 150/2009), caratterizzata da un rovesciamento dei rapporti fra legge e contrattazione collettiva, a tutto vantaggio della regolazione unilaterale dei rapporti di lavoro. In particolare, l'Autore critica l'assetto autoritaristico sotteso al provvedimento, mettendo in evidenza la debolezza della visione pseudo-aziendalistica da esso adottata. Nella parte finale ci si sofferma sul "fallimento" del disegno legislativo,…
Decreti-legge, delegificazione e attribuzione di potere reolamentare al Governo
2016
This essay analyses the use of the “delegification” powers of Italian Government during the economic and financial crisis. “Delegification” regulations are often approved in Italian legal system in order to make easier the legislation and to abolish useless statutes. During the years of the economic crisis, furthermore in XVI and in XVII legislatures, “delegification” orders were considered as strategic instruments of economic and legal simplification. Nevertheless, in some cases, they added complexity to the economic and legal system.