Identification of intimin alleles in pathogenic Escherichia coli by PCR-restriction fragment length polymorphism analysis

A rapid two-step identification method based on PCR-RFLP analysis of the intimin gene was developed to differentiate specific alleles in pathogenic Escherichia coli. This technique, tested on isolates eae-positive, accurately detects eae and resolves alleles encoding the α1, α2, β, γ1, γ2/θ, κ, ɛ, ζ, and ι intimin variants

Cultural Interactions and Religious Iconography in 16th Century Kerala: the Mural Paintings of St. Mary’s Church in Angamaly

St. Mary\u27s Jacobite Syrian Church is an ancient church in Angamaly (Kerala). One account has Syrian Christians arriving in Angamaly in 384 CE and the church being established in 409 CE. Syrian Christians are the earliest Christian community of India, and they attribute their origin to the evangelical efforts of the apostle Saint Thomas who is believed to have travelled through the Malabar country in 52 CE evangelizing and building churches. It was when he moved east that he is supposed to have met his death and (martyrdom) at Mylapore near Madras

Searches for Heavy Neutrinos at the CERN SPS

Searches for heavy neutrinos can be successfully performed by fixed target experiments at the CERN SPS. New results obtained by the NA62 and NA48/2 kaon experiments are summarized in this paper. The physics potential of future projects exploiting SPS protons with beam dump facilities to enlarge the sensitivity to heavy neutrinos above the kaon mass limit are also outlined.Comment: 10 pages, 6 figures, NuPhys2017 conference proceedings, reference added to section

Aspects of Group Field Theory

I review the basic ingredients of discretized gravity which motivate the introduction of Group Field Theory. Thus I describe the GFT formulation of some models and conclude with a few remarks on the emergence of noncommutative structures in such models.Comment: Invited Talk at the conference: XX Fall Workshop on Geometry and Physics, ICMAT, Madrid 2011. To be published in AIP Conference Proceeding

The academic atudies between printed and multimedia text in Italy

La diffusione e la disponibilità di testi e fonti informative rese disponibili e immediatamente fruibili attraverso la rete ha reso disponibili banche dati testi di diversa natura, in generale facilitato l'accesso a diversi tipi di documentazione (Gui 2014) e incrementato il tempo dedicato alla lettura (Bohn e Short 2009). Inoltre Internet in quanto fonte informativa occupa un posto di fondamentale importanza nei sistemi di istruzione e formazione. In Italia con la Legge 107/2015 il Ministero dell’Istruzione, dell’Università e della Ricerca ha messo a punto un Piano Nazionale Scuola Digitale (PNSD) sostenendo di fatto un processo di dematerializzazione del libro nel sistema di istruzione, ormai avviato e spesso ritenuto soluzione didattica. Tuttavia questo processo non è esente da rischi. Come sottolinea Casati (2013) il libro di carta presenta una indubbi vantaggi cognitivi connessi a linearità, stabilità della pagina che offre i contenuti, modalità di lettura. A ciò possiamo aggiungere gli elementi critici connessi al sistema di ricerca in Internet (Spitzer 2015) e le difficoltà di selezione delle fonti e del contenuto informativo connesse a tale ricerca. In questa sede si propone di sviluppare il tema attraverso una analisi critica anche alla luce delle evidenze emerse nel corso delle interviste a un gruppo di laureandi iscritti al corso di laurea triennale in Scienze dell’Educazione e della Formazione (SEF) dell'Università di Roma "La Sapienza"This essay falls within the reflection on the relation between learning places and methods and the use of new technologies in Italy. The diffusion and immediate availability of texts and sources of information through the Internet have enabled the access to various databases of texts as well as to several types of documentation, thus increasing the time spent on reading [1]. Moreover, the Internet-intended as a source of information -plays a crucial role within the education and training systems. In Italy, Law 107/2015 of the Ministry of Education, Universities and Research (MIUR) has provided for a National Plan for Digital Education (PNSD) which promotes the dematerialization of books with in the school system, often regarded as proven educational instruments. However this process necessarily involves some risks. As evidenced by Casati (2013) [2], printed books have clear cognitive advantages thanks to their linearity, the stability of the page bearing the contents, and the ease of reading. This could be supplemented by critical elements relating to the research on the Internet [3] and the difficulty of selecting the sources and the information highlighted by the research. In this context, the issue is developed also based on the evidences arisen from the interviews with some students about to graduate in Education and Training (SEF) - 1st level degree - at The Sapienza University of Rom

A field-theoretic approach to Spin Foam models in Quantum Gravity

We present an introduction to Group Field Theory models, motivating them on the basis of their relationship with discretized BF models of gravity. We derive the Feynmann rules and compute quantum corrections in the coherent states basis.Comment: 16 pages, 3 figures. Proceedings of the Workshop on Non Commutative Field Theory and Gravity, September 8-12, 2010 Corfu Greec

Temperature induced phase transitions in four fermion models in curved space-time

The large N limit of the Gross-Neveu model is here studied on manifolds with constant curvature, at zero and finite temperature. Using the zeta-function regularization, the phase structure is investigated for arbitrary values of the coupling constant. The critical surface where the second order phase transition takes place is analytically found for both the positive and negative curvature cases. For negative curvature, where the symmetry is always broken at zero temperature, the mass gap is calculated. The free energy density is evaluated at criticality and the zero curvature and zero temperature limits are discussed.Comment: Latex file, 24 pages, 3 eps figures. Minor corrections. To appear in Nucl. Phys.