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Search Results: 1 - 10 of 532650 matches for " Maria A Di Deco "
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Chromosomal plasticity and evolutionary potential in the malaria vector Anopheles gambiae sensu stricto: insights from three decades of rare paracentric inversions
Marco Pombi, Beniamino Caputo, Frederic Simard, Maria A Di Deco, Mario Coluzzi, Alessandra Torre, Carlo Costantini, Nora J Besansky, Vincenzo Petrarca
BMC Evolutionary Biology , 2008, DOI: 10.1186/1471-2148-8-309
Abstract: Here, we present data on 82 previously undescribed rare chromosomal inversions (RCIs) recorded during extensive field sampling in 16 African countries over a 30 year period, which may shed light on the dynamics of chromosomal plasticity in An. gambiae. We analyzed breakpoint distribution, length, and geographic distribution of RCIs, and compared these measures to those of the common inversions. We found that RCIs, like common inversions, are disproportionately clustered on 2R, which may indicate that this arm is especially prone to breakages. However, contrasting patterns were observed between the geographic distribution of common inversions and RCIs. RCIs were equally frequent across biomes and on both sides of the Great Rift Valley (GRV), whereas common inversions predominated in arid ecological settings and west of the GRV. Moreover, the distribution of RCI lengths followed a random pattern while common inversions were significantly less frequent at shorter lengths.Because 17/82 (21%) RCIs were found repeatedly at very low frequencies – at the same sampling location in different years and/or in different sampling locations – we suggest that RCIs are subject mainly to drift under unperturbed ecological conditions. Nevertheless, RCIs may represent an important reservoir of genetic variation for An. gambiae in response to environmental changes, further testifying to the considerable evolutionary potential hidden within this pan-African malaria vector.Chromosomal paracentric inversions are mutations where part of a chromosome, not including the centromere, has been reversed with respect to a standard orientation of reference. These inversions have now been described from a diversity of species, including humans [1], but historically were most readily observed in dipteran groups such as midges, blackflies, fruitflies and anopheline mosquitoes, where the presence of giant (polytene) chromosomes facilitates detection and analysis of inversions [2,3].Theoretical and empi
Monastic civilisation and reforms. New studies and innovative perspectives at the daylight for the 21st century
Glauco Maria Cantarella (a cura di)
Reti Medievali Rivista , 2010, DOI: 10.6092/1593-2214/1
Abstract: There are here published the proceedings of congresses Amicitia e monachesimo: fonti, storia, problemi (Fonte Avellana, 29-30 agosto 2009) and Nuove ricerche su Pier Damiani e l'XI secolo: bilanci e prospettive (Bologna, 22 gennaio 2010). Sono qui pubblicati gli atti dei convegni Amicitia e monachesimo: fonti, storia, problemi (Fonte Avellana, 29-30 agosto 2009) e Nuove ricerche su Pier Damiani e l'XI secolo: bilanci e prospettive (Bologna, 22 gennaio 2010).
New researches on Peter Damian and the 11th century: assessments and perspectives (Bologna, 22 January 2010)
Glauco Maria Cantarella (a cura di)
Reti Medievali Rivista , 2010, DOI: 10.6092/1593-2214/39
Abstract: Proceedings of the second congress. Contributi al convegno Nuove ricerche su Pier Damiani e l’XI secolo: bilanci e prospettive (Bologna, 22 gennaio 2010).
Amicitia and monasticism: sources, history, problems (Fonte Avellana, 29-30 August 2009)
Glauco Maria Cantarella (a cura di)
Reti Medievali Rivista , 2010, DOI: 10.6092/1593-2214/38
Abstract: Proceedings of the first congress. Contributi al primo convegno.
Intorno alla storia medievale
Gian Maria Varanini (a cura di)
Reti Medievali Rivista , 2011, DOI: 10.6092/1593-2214/322
Abstract: Atti dell’incontro organizzato dalla Società Italiana degli Storici Medievisti (Roma, 1-2 ottobre 2010) Proceedings from a Seminar organized by Società Italiana degli Storici Medievisti (Rome, October 1-2, 2010)
Slow Modulation of Ongoing Discharge in the Auditory Cortex during an Interval-Discrimination Task
Juan M. Abolafia,Gustavo Deco,Maria V. Sanchez-Vives
Frontiers in Integrative Neuroscience , 2011, DOI: 10.3389/fnint.2011.00060
Abstract: In this study, we recorded single unit activity from rat auditory cortex while the animals performed an interval-discrimination task. The animals had to decide whether two auditory stimuli were separated by either 150 or 300 ms, and go to the left or right nose poke accordingly. Spontaneous firing in between auditory responses was compared in the attentive versus non-attentive brain states. We describe the firing rate modulation detected during intervals while there was no auditory stimulation. Nearly 18% of neurons (n = 14) showed a prominent neuronal discharge during the interstimulus interval, in the form of an upward or downward ramp towards the second auditory stimulus. These patterns of spontaneous activity were often modulated in the attentive versus passive trials. Modulation of the spontaneous firing rate during the task was observed not only between auditory stimuli, but also in the interval preceding the stimulus. These slow modulatory components could be locally generated or the result of a top-down influence originated in higher associative association areas. Such a neuronal discharge may be related to the computation of the interval time and contribute to the perception of the auditory stimulus.
Identidade, alteridade e cultura regional: a constru o do ethos milongueiro gaúcho
Maria da Glória Corrêa Di Fanti
Alfa : Revista de Linguística , 2009,
Abstract: Considerando a importancia de se conhecer o gênero musical milonga, que representa de modo peculiar a cultura gaúcha, este trabalho tem o objetivo de analisar aspectos relativos à constru o discursiva do ethos do enunciador da milonga-can o, procurando apreender características da atividade de composi o da milonga. A metodologia da presente reflex o é desenvolvida de modo a responder às seguintes quest es: Qual o ethos que se constrói no discurso de duas diferentes milongas de um mesmo compositor? Que características do milongueiro podem ser apreendidas a partir das can es analisadas? Como embasamento teórico, a análise do discurso de base enunciativa e a teoria bakhtiniana proporcionam a observa o de como o sujeito enunciador se constrói na rela o com o outro nos discursos que atravessam o seu dizer, propiciando a observa o da tens o entre identidade e alteridade na tessitura das milongas, de modo a apreender responsivamente características que acenam para a constru o discursiva de um jeito milongueiro de ser.
The Scuole di specializzazione per l'insegnamento secondario (SSIS) and teaching history, Study Meeting, Milan, june 8, 2001
Maria Pia Alberzoni,Giovanni Vitolo (a cura di)
Reti Medievali Rivista , 2002,
Abstract: This article deals with the Specialization Schools for high school history teachers and is related to other articles in this section. Le Scuole di specializzazione per l'insegnamento secondario (SSIS) e la didattica della storia, Incontro di studio, Milano, 8 giugno 2001, Dossier a cura di Maria Pia Alberzoni e Giovanni Vitolo
Città sotto assedio (Italia, secoli XIII-XV)
Donata Degrassi,Gian Maria Varanini (a cura di)
Reti Medievali Rivista , 2007,
Abstract: Città sotto assedio (Italia, secoli XIII-XV). City under siege (Italy, 13th-15th).
Female genital mutilation of minors in Italy: is a harmless and symbolic alternative justified?
Maria Luisa Di Pietro,Adele A. Teleman,Maurizio P. Faggioni
Italian Journal of Public Health , 2012, DOI: 10.2427/7533
Abstract: In 2004, Omar Abdulcadir - a gynecologist of the Centre for the prevention and therapy of female genital mutilation (FMG) at the Careggi Hospital (Florence) - proposed a “harmless and symbolic” alternative to FMG, which consists in the puncture of the clitoris under local anesthesia, in order to allow the outflow of some drops of blood (1). The intention behind the symbolic alternative is to avoid more severe forms of FGM while respecting cultural heritage. The proposal of this alternative procedure, which was sustained by the leaders of 10 local African immigrant communities, has encountered ample criticism (1). However, the question is: is the puncture of the clitoris prohibited by the Italian Law n. 7/2006? If it is not, could it be considered a method of reducing health risks caused by the more invasive forms of FGM (2)? Or could it culturally legitimize FGM, causing a greater difficulty in the attempts to prevent and eradicate FGM in Italy?
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