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Search Results: 1 - 10 of 67 matches for " Immacolata Iovinella "
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Two Odorant-Binding Proteins Mediate the Behavioural Response of Aphids to the Alarm Pheromone (E)-?-farnesene and Structural Analogues
Yu Feng Sun, Filomena De Biasio, Hui Li Qiao, Immacolata Iovinella, Shao Xiang Yang, Yun Ling, Lea Riviello, Donatella Battaglia, Patrizia Falabella, Xin Ling Yang, Paolo Pelosi
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0032759
Abstract: Background Aphids are agricultural pests of great economical interest. Alternatives to insecticides, using semiochemicals, are of difficult applications. In fact, sex pheromones are of little use as aphids reproduce partenogenetically most of the time. Besides, the alarm pheromone, (E)-?-farnesene for a great number of species, is difficult to synthesize and unstable in the environment. The search for novel semiochemicals to be used in population control can be efficiently approached through the study of the olfactory system at the biochemical level. Recently odorant-binding proteins (OBPs) have been shown to play a central role in olfactory recognition, thus becoming the target of choice for designing new semiochemicals. Methodology/Principal Findings To address the question of how the alarm message is recognised at the level of OBPs, we have tested 29 compounds, including (E)-?-farnesene, in binding assays with 6 recombinant proteins and in behaviour experiments. We have found that good repellents bind OBP3 and/or OBP7, while non repellents present different spectra of binding. These results have been verified with two species of aphids, Acyrthosiphon pisum and Myzus persicae, both using (E)-?-farnesene as the alarm pheromone. Conclusions Our results represent further support to the idea (so far convincingly demonstrated only in Drosophila) that OBPs are involved in decoding the chemical information of odorants and pheromones, and for the first time provide such evidence in other insect species and using wild-type insects. Moreover, the data offer guidelines and protocols for the discovery of potential alarm pheromones, using ligand-binding assays as a preliminary screening before subjecting selected compounds to behaviour tests.
A Proteomic Investigation of Soluble Olfactory Proteins in Anopheles gambiae
Guido Mastrobuoni, Huili Qiao, Immacolata Iovinella, Simona Sagona, Alberto Niccolini, Francesca Boscaro, Beniamino Caputo, Marta R. Orejuela, Alessandra della Torre, Stefan Kempa, Antonio Felicioli, Paolo Pelosi, Gloriano Moneti, Francesca Romana Dani
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0075162
Abstract: Odorant-binding proteins (OBPs) and chemosensory proteins (CSPs) are small soluble polypeptides that bind semiochemicals in the lymph of insect chemosensilla. In the genome of Anopheles gambiae, 66 genes encode OBPs and 8 encode CSPs. Here we monitored their expression through classical proteomics (2D gel-MS analysis) and a shotgun approach. The latter method proved much more sensitive and therefore more suitable for tiny biological samples as mosquitoes antennae and eggs. Females express a larger number and higher quantities of OBPs in their antennae than males (24 vs 19). OBP9 is the most abundant in the antennae of both sexes, as well as in larvae, pupae and eggs. Of the 8 CSPs, 4 were detected in antennae, while SAP3 was the only one expressed in larvae. Our proteomic results are in fairly good agreement with data of RNA expression reported in the literature, except for OBP4 and OBP5, that we could not identify in our analysis, nor could we detect in Western Blot experiments. The relatively limited number of soluble olfactory proteins expressed at relatively high levels in mosquitoes makes further studies on the coding of chemical messages at the OBP level more accessible, providing for few specific targets. Identification of such proteins in Anopheles gambiae might facilitate future studies on host finding behavior in this important disease vector.
Retorica militare fra tradizione protrettica e pensiero strategico
Eramo, Immacolata
Talia Dixit : Revista Interdisciplinar de Retórica e Historiografía , 2010,
Abstract: Rhetorica Militaris, the logikon meros of Syrianos Magister's conpendium is an original, unique stage of the history of the protreptic genre. While the first signs of the genre can be seen already in Homer's Iliad, Thucydides' Histories are in this field and unsurpassed example for later military historians, and particularly to Procopius. The rhetorical structure of the Rhetorica militaris, organized upon the theories attributed to Hermogenes of Tarsus, combines protreptic themes with strategic thought, wich in the byzantine ages assumes a mature character. According to this theory, in times of war and emotional issues can be more important than battles with weapons.
San Francisco, California, August 3-31, 2010
Maria Immacolata Macioti
Academicus : International Scientific Journal , 2010, DOI: 10.7336/academicus.2010.02.05
Abstract: In my contribution I want to investigate, from a theoretical point of view but also with methodological and practical consequences, the qualitative role of metaphor in social research. As tool able to improve and facilitate the visualization of complex ideas and states of mind, this rhetorical figure permits to obtain more information from interviewed people about topics hard to access in common interviews. This goal can be achieved by the build of the so called “tomen”, an artifact/experience design created by the subject(s) interviewed which represents a gate point from which explore hidden dimensions, individual as diffused. Furthermore, the metaphor offers a strong link to another concept that now in sociology needs an operative dimension, the game: a buzz word that I intend as social frame of experience positioned in an artificial setting, a “magic circle”, able to represent in its operations a collective metaphor which gives us enormous possibilities to configure and set the ground of analysis.
Israel and the Occupied Territories
Maria Immacolata Macioti
Academicus : International Scientific Journal , 2010, DOI: 10.7336/academicus.2010.01.02
Abstract: The integration of legal systems in European is one of the most important issues. This process has started by the fact that there are significant differences between the civil law and common law system and between the legal families in it. A law (at domestic or international level) should not be viewed against the backdrop of the historical, political, cultural, social and economic context in which they function. In order to shed further light for our readers, we analyze by emphasizing the significant differences between the civil law and common law system on one side and the legal families that are part of the same legal system, either “Civil” or “Common,” on the other side. The Europeanization of law refers to the communization of the law by EU institutions and to a process that aims at creating a common Europe legal system. In the end, either in medium or long term, the Europeanization is contributing to the so-called non-mandatory or soft harmonization of private law. It is in the best interest of the EU to seek adequate judicial instruments to accommodate the massive numbers of laws deriving from different Civil Law and the Common law systems.
Armenians and 20th century genocide - Debates
Maria Immacolata Macioti
Academicus : International Scientific Journal , 2011, DOI: 10.7336/academicus.2011.03.03
Abstract: Somalia has been one of the UN member countries who lingers from the presence of terrorist groups in its territory, that exert tremendous influence in the daily life of its society and economy. Al Shabaab is well known in the horn of Africa, particularly in Somalia, for its terrorist training and strong affiliation with other terrorist groups in Nigeria and Al-Qaeda. The Harakat Shabaab Al Mujahidin, also known as Al-Shabaab. has completely controlled the central and southern part of Somalia including some of its important sea ports, which are vital for the country’s economy. Although Ethiopian and Somali military forces attempted to rout the group in a two week war between December 2006 and January 2007, Al Shabaab, with its 14,500 militants, still continues to maintain control over strategic locations, not only in Somalia, but also throughout the horn of Africa. The paper delves into the recent events and attacks either undertaken or influenced by Al-Shabaab, including a snap shot of its threat to humanitarian aid personnel as well as the Africa Union troops who are desperately trying to lower the intensity of conflict along the Somalia Kenya border area and Al-Shabaab’s actions to secure financial resources.
Memoria, società e territori
Maria Immacolata Macioti
m@gm@ , 2012,
Abstract: Forse perché da lunghi anni mi interesso di sociologia qualitativa, mi sembra di aver visto crescere l’importanza del tema della memoria, anche se secondo logiche a volte diverse e contraddittorie, di spinta e accettazione da un lato, di negazione ed oblio dall’altro. Certamente, di attenzione e dibattito tra gli studiosi, tra diverse discipline. Da tempo si interessano di memoria, di memorie, si adoperano per individuarle, raccoglierle, trasmetterle sia la storia orale che la sociologia qualitativa. Nel loro ambito si ritrovano, si individuano, si raccolgono memorie personali e di gruppo, memorie che sono quindi rappresentazioni sociali. Che vengono ascoltate, accolte, rielaborate (le memorie vivono dinamiche di ricordo e oblio), valorizzate e comunicate. E non solo: gli studiosi che ricorrono alla raccolta di interviste in profondità, intese a fare emergere memorie, a ricostruire ‘storie di vita’ o magari tranches de vie, quelli che utilizzano materiali biografici per ricostruire un certo periodo storico, un ambiente, una tematica, sono, insieme, di regola, anche dei seminatori di memorie.
Viaggio verso le migrazioni: da Salina e S. Giovanni in Fiore
Maria Immacolata Macioti
m@gm@ , 2011,
Abstract: Sono rivelatori, i viaggi. Tanto che bisognerebbe essere molto cauti nello scriverne, nel ricordarli, nel comunicarli. Perché sveliamo, parlandone, scrivendone, paesaggi, realtà, rapporti tra persone, rapporti sociali. E non solo. Sveliamo anche, inevitabilmente, noi stessi. Anche laddove non è questa l’intenzione dello scrivere. Ma questo sarà vero anche nel caso di brevi, circoscritti percorsi? Me lo chiedo, mentre scrivo di un breve recente viaggio verso Salina, verso le migrazioni italiane da Salina. Verso la Salina di oggi. Verso la Salina ottocentesca. Un viaggio che, nell’insieme, è durato tre giorni in tutto, di cui quasi due spesi per recarci sui luoghi, per ripartirne. Chi leggerà questo breve resoconto cosa potrà pensare di chi ha pensato a un itinerario di questo genere?
Internati militari italiani
Maria Immacolata Macioti
m@gm@ , 2012,
Abstract: Oggi, a sessanta anni di distanza, in un mutato contesto, in una Italia meno povera, più protesa sul futuro, alcuni dei militari di allora hanno pubblicato scarni brani di diario, hanno offerto memorie ricostruite oggi, a partire da furtivi e forzatamente rapidi appunti di allora: emerge un materiale inedito che da un lato contribuisce a dare elementi per una ricostruzione storica, dall’altra ha certamente un valore affettivo, familiare: si fa sentire, evidentemente, l’esigenza di raccontare cosa è avvenuto perché si sente il dovere della memoria. Perché si riconosce il diritto alla memoria delle giovani generazioni, dei propri nipoti. Nei decenni trascorsi i ricordi si sono forse stemperati, si è imparato a conviverci. Si è probabilmente più in grado, a distanza di decenni, di fare una rilettura dei fatti di allora, di farsene una ragione. Di cercare di attribuire a questa devastante esperienza un qualche senso, un significato. E quindi oggi alcuni parlano, altri scrivono. Dicono che nella cattività hanno riscoperto la libertà, la democrazia.
First-Order Phase Transition in Potts Models with finite-range interactions
Thierry Gobron,Immacolata Merola
Mathematics , 2006, DOI: 10.1007/s10955-006-9230-8
Abstract: We consider the $Q$-state Potts model on $\mathbb Z^d$, $Q\ge 3$, $d\ge 2$, with Kac ferromagnetic interactions and scaling parameter $\ga$. We prove the existence of a first order phase transition for large but finite potential ranges. More precisely we prove that for $\ga$ small enough there is a value of the temperature at which coexist $Q+1$ Gibbs states. The proof is obtained by a perturbation around mean-field using Pirogov-Sinai theory. The result is valid in particular for $d=2$, Q=3, in contrast with the case of nearest-neighbor interactions for which available results indicate a second order phase transition. Putting both results together provides an example of a system which undergoes a transition from second to first order phase transition by changing only the finite range of the interaction.
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