Search results for "Oran"
showing 10 items of 2425 documents
Coping with continual danger: assessing alertness to visual disturbances in crucian carp following long-term exposure to chemical alarm signals.
2013
Chemical alarm signals in fish are passively released into the water from ruptured epidermal cells, and induce instant fright responses in conspecifics. Fish also display alarm responses to injured heterospecific skin, as well as to scent of piscivorous predators that have ingested prey. A conspicuous alertness to visual disturbances has also been observed in fish following long-term exposure to extracts of filtered, homogenized skin, but the chemical inducers of such vigilance are actually unknown. We tested if a continual exposure to water-soluble alarm signals, from either conspecifics or heterospecifics, affects alertness of fish. Based on previous experience, it was assumed that alertn…
Surrealismo e dintorni
2010
«Povera, buona, malinconica Italia». Le cartografie di Orio Vergani
2019
Un'intensa urgenza di ricostruzione si ritrova nelle pagine di Orio Vergani dedicate alle imprese ciclistiche di Fausto Coppi, in cui la cronaca sportiva si fonde al racconto del tormentato ventennio che va dal 29 maggio del 1940 sino alla morte del «campionissimo», nel gennaio del 1960. In tale ‘narrazione’, che coopera a delineare un percorso ideologico e politico di adesione al fascismo mai negato dallo scrittore ma vissuto, soprattutto a ridosso della guerra, in modo problematico, il trattamento dello spazio riveste una centralità conoscitiva ed intepretativa fondante, configurando topografie in cui spaccato documentario, analisi societaria, suggestione narrativa coesistono. Nell’immedi…
SIGNA VETUSTA MANENT: LE MACULATURAE, IL TABULARIO, I DISEGNI DI PROGETTO RITROVATI (SECC. XII – XVIII)
2014
Caspar David Friedrich, di Johannes Grave, München-London-New York, Prestel, 2012, pp. 288, 230 illustrazioni
2014
Katecheza w szkole czy poza szkołą?
2012
In the contemporary religious education, a great amount of deliberations is devoted to the subject of religious education (by whom? to whom?), its contents (what?), aims (what for?), methods and means (how?), conditioning (where? when?), but only occasionally questions are raised about the need and justification for religious education. Meanwhile, the question of justification for religious education is gaining more and more importance in the situation of increasing secularization of social and personal life. It is important to go back and recall these arguments that justify religious education in various educational environments. The contemporary conditioning of catechesis is undergoing si…
Cytology of Thamnidium elegans Link. II. Distribution and behaviour of nuclei in hyphae, sporangiophores and sporangiospores.
1976
The resting nuclei in hyphae, sporangiophores and sporangiospores of sporangia and sporangiola of Thamnidium elegans consist of a large centrals nucleolus and a shell of chromatin surrounding the nucleolus. Division of the nucleus in hyphae and sporangiospores is achieved by elongation and constriction.
Anti-inflammatory effects of chemically modified tetracyclines by the inhibition of nitric oxide and interleukin-12 synthesis in J774 cell line
2001
We investigated the effects of chemically modified tetracyclines (CMTs) on the production of nitric oxide (NO) and on the synthesis of some cytokines: tumour necrosis factor alpha (TNF-alpha), interleukin(IL)-10 and IL-12 in lipopolysaccharide (LPS)-treated J774 cell line. Furthermore, we studied the ability of these drugs to modify the viability in LPS-stimulated J774 macrophages. CMTs decreased, in a dose-dependent manner, inducible NO synthase (iNOS) activity and, consequently, nitrite formation in J774 cultures. The CMT-induced decrease in NO production is due to the inhibition of enzyme activity rather than to a direct effect on enzyme expression. The absence of the inhibition in mRNA …
Odorant binding changes the electrical properties of olfactory receptors at the nanoscale
2021
Olfactory receptors (ORs) comprise the largest multigene family in the vertebrates. They belong to the class A (rhodopsin-like) family of G protein-coupled receptors (GPCRs), which are the most abundant membrane proteins, having widespread, significant roles in signal transduction in cells, and therefore, they are a major pharmacological target. Moreover, ORs displayed high selectivity and sensitivity towards odorant detection, a characteristic that raised the interest for developing biohybrid sensors based on ORs for the detection of volatile compounds. The transduction of odorant binding into cellular signaling by ORs is not well understood and knowing its mechanism would enable developin…
Moduli DSSC integrati nel vetromattone per la costruzione di pannelli traslucidi fotovoltaici multifunzionali
2012
La proposta illustrerà i primi risultati ottenuti nell’ambito di una ricerca, tutt’ora in corso presso il Dipartimento di Architettura dell’Università degli Studi di Palermo, finalizzata ad indagare le problematiche connesse all’integrazione del vetromattone con sistemi di produzione di energia rinnovabile, in particolare, di terza generazione (DSC-Dye Syntetized solar cell - celle fotovoltaiche organiche/ibride). I principali campi di investigazione che si illustreranno saranno connessi alle: tecniche ed i processi di deposizione delle celle sul vetromattone per la costruzione dei moduli, alla scelta del loro migliore posizionamento ed all’analisi delle ricadute, in termini di valutazione …