4,744 research outputs found
Prenatal restraint stress differentially modifies basal and stimulated dopamine and noradrenaline release in the nucleus accumbens shell: an 'in vivo' microdialysis study in adolescent and young adult rats.
No full textEur J Neurosci. 2008 Aug;28(4):744-58. Epub 2008 Jul 30.
Prenatal restraint stress differentially modifies basal and stimulated dopamine
and noradrenaline release in the nucleus accumbens shell: an 'in vivo'
microdialysis study in adolescent and young adult rats.
Silvagni A, Barros VG, Mura C, Antonelli MC, Carboni E.
Department of Toxicology, Via Ospedale 72, 09124 Cagliari, Italy.
Gestational stress [prenatal stress (PNS)] has been associated with low birth
weight, preterm delivery, and higher vulnerability to psychiatric disorders such
as schizophrenia, depression or attention deficit with hyperactivity disorder.
The alteration of catecholamine transmission has been attributed a major role in
the etiology of psychiatric disturbances. We investigated the effect of PNS on
basal and stimulated dopamine and noradrenaline output in the nucleus accumbens
of freely moving adolescent and young adult rats (30-35 and 60-70 postnatal days
respectively) because of the importance of this area in drug dependence and
possibly in psychiatric disorders that are treated with drugs that act on
dopamine and noradrenaline transmission. Stimulation was obtained with
intraperitoneal amphetamine (0.25 mg/kg) or subcutaneous nicotine (0.4 mg/kg).
The results showed the following: (i) basal and amphetamine-stimulated dopamine
output in adolescent and adult PNS rats is higher than in controls; (ii)
nicotine-stimulated dopamine output is lower than in controls in adolescent but
not in adult PNS rats; (iii) basal noradrenaline output is lower than in controls
in adolescent but not in adult PNS rats; (iv) amphetamine-stimulated
noradrenaline output is higher than in controls in adult but not in adolescent
PNS rats; (v) nicotine-stimulated noradrenaline output in PNS rats is higher than
in controls, although only in adults. These results show that PNS may produce a
complex change in accumbal dopamine and noradrenaline transmission. We discuss
the possibility that these changes might be correlated with the development of
psychiatric disorders or with an increased vulnerability to drug addiction.
PMID: 18671739 [PubMed - indexed for MEDLINE
Personalita’ dell’euro e Big Five. 108) Conte S., Bini V., , Loi B., Serafino E. (2004) Studi comparativi in animali sociali
No full textAREA TEMATICA: Strumenti di misura e modelli di analisi dei dati PRESENTAZIONE: orale AUTORI: Maria Caterina Mura, Dipartimento di Psicologia - Università degli Studi di
Cagliari Manuela Pes, Dipartimento di Psicologia - Università degli Studi di Cagliari Stella Conte, Dipartimento di Psicologia - Università degli Studi di Cagliari, [email protected] Simona Floris, Dipartimento di Psicologia - Università degli Studi di Cagliari
TITOLO: Personalita’ dell’euro e Big Five
ABSTRACT BREVE: La presente ricerca ha come obiettivo quello di valutare l’immagine che i consumatori hanno della nuova moneta europea, attraverso la descrizione del suo “profilo di personalità”. A tal scopo è stato utilizzato lo strumento del Big Five, capovolgendo il suo utilizzo: da descrittore della personalità umana a descrittore dell’immagine percepita di un oggetto.
ABSTRACT INTRODUZIONE Il Modello Big Five ha trovato nuovo utilizzo nella descrizione di entità diverse dalla personalità umana. Nel campo del marketing diverse ricerche (Caprara, Barbaranelli, 1996; Aaker, 1997; Aaker, Bennet – Martinez, Garolera, 2001; Pes, Mura, Conte, 2002) hanno dimostrato la sua funzionalità come strumento di descrizione dell’immagine percepita dal consumatore di marche e prodotti. Col termine personalità di marca sono da intendere l’insieme delle caratteristiche umane associate ad una marca la cui funzione è quella di generare un significato simbolico della marca o del prodotto stesso. La plausibilità dell’utilizzo della metafora della personalità per la descrizione di entità diverse dalla personalità umana, deriva da una ricca documentazione che attesta il fenomeno del trasferimento delle caratteristiche degli esseri umani agli oggetti. Tale ribaltamento della modalità di utilizzo del Big Five è stato da noi effettuato allo scopo di studiare l’immagine della nuova moneta europea. In linea con l’ipotesi sostenuta dagli autori che prima di noi ne hanno fatto lo stesso utilizzo, riteniamo che la soddisfazione nei confronti dell’euro sia associata all’immagine più o meno piacevole percepita dal consumatore. Naturalmente i tratti della personalità umana e quelli della personalità dell’euro differiscono per i processi attraverso i quali si generano, mentre i primi si formano sulla base di comportamenti, caratteristiche fisiche, atteggiamenti, credenze e emozioni degli individui, i secondi si formano attraverso il contatto diretto e indiretto delle persone con la moneta. Questo contributo consiste in un’indagine esplorativa sulla soddisfazione dei consumatori nei confronti dell’euro attraverso la descrizione del suo profilo di personalità
Marsala, 'Zona Mura': la ceramica da cucina tardoromana
No full textThis paper discusses Late Roman cooking wares from recent excavations in the ‘Zona Mura’ (Marsala). A systematic research to investigate monuments and artifacts in detail, focusing on the role of Lilybaeum in the Mediterranean context from Hellenistic to Late Roman times, was planned by the mission of Hamburg and Palermo Universities; the ‘Lilybaeum Archaeological Project’ started in 2007 in collaboration with the Superintendence of Trapani and the Archaeological Museum of Marsala. Hence, an area into the north-eastern sector of the Archaeological Park of Marsala, the so-called ‘Zona Mura’, was identified; in connection with a preliminary geological survey and geophysical prospecting, in 2008-2009 excavations carried out in the area brought to light some architectural remains of a brick wall, belonging to a Late Roman rebuilding of a part of the city wall; remains of insulae, situated in the southern part of the surveyed area (fragments of wall paintings and a white mosaic floor were found still in loco); part of two limestone-paved roads flanked with pavements and ruins of a Late Roman sewer.
The preliminary results of the ongoing pottery study are promising. African tableware and cooking ware, Pantellerian ware, African amphoras are well represented products, but there are samples of regional and unknown provenance as well. One prominent research objective for our team is the analysis of the dynamic pattern of relations between different production-centres of ceramics deriving from the ‘Zona Mura’..
An ultra-low-noise 1700-Mc parametric amplifier system
No full textField operational solid state varactor ultralow noise 1700 Mc parametric amplifier syste
Interactively using Semantic Web knowledge: Creating scalable abstractions with FacetOntology
No full textThe amount of knowledge accessible on the Semantic Web is growing, and there is a need for a scalable solution to facilitate exploring that data. Currently approaches to exploring Semantic Web data either focus on exploring resources individually, following links during exploration, and making little use of collated data, or take the approach of collating and aligning multiple sources into one store for one purpose, and hand-crafting a specific browsing interface onto it. We present an approach that provides a scalable browsing interface, which can browse knowledge from the Semantic Web at will. Our approach creates abstractions of knowledge, collated into facets, which are described using FacetOntology. FacetOntology facilitates describing facets from RDF data, suitable for use in creating datasets for faceted browsing
Growth Morphologies and Mechanisms of Non-Equilibrium Solidified MC Carbide
No full textGrowth morphologies and mechanisms of the carbide of group IVB and VB elements (MC carbide), a typical faceted crystal, were studied with an estimated cooling rate from 102 to 105 K/s. Results showed that although the growth morphologies of the MC carbide vary remarkably with solidification cooling rate, the solid/liquid interface is always atomically smooth, and the growth mechanisms are always lateral growth. The growth mechanism transition from lateral to continuous growth mode, which was predicted by the classic crystal growth theory, was not observed for the TiC type MC carbide within the estimated cooling rate range of 102?105 K/s
Ruth Klüger: la creatività per non “smarrirsi strada facendo”
No full textR. Klüger, a jewish viennese, a US citizen and a germanist, is the Author of two autobiographies “weiter leben”and “unterwegs versore”. Written in a style which alternates between essay and poetry, account and recollection, they are the occasion for the Author to establish a dialogue with the women having as a focus the exchange of experiences and reflections over the status of the feminine emancipation
Eutectic MC Carbide Growth Morphologies of a Laser Clad TiC/FeAl Composite Coating
No full textIn this paper, eutectic MC carbide growth morphology and its evolution with laser scanning speed were studied comprehensively of a laser clad MC carbide reinforced FeAl intermetallic matrix composite coating. As the laser scanning speed increased, the growth morphology of eutectic MC carbide was found to be needle-aligned annulation, butterfly-like and well-developed dendrite
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