Spontaneous Breaking of N=2 to N=1 in Rigid and Local Supersymmetric Theories

We analyze the relation between rigid and local supersymmetric N=2 field theories, when half of the supersymmetries are spontaneously broken. In particular, we show that the recently found partial supersymmety breaking induced by electric and magnetic Fayet-Iliopoulos terms in rigid theories can be obtained by a suitable flat limit of previously constructed N=2 supergravity models with partial super-Higgs in the observable sector.Comment: 9 pages, plain Late

Research Progress in Transfer, Accumulation and Effects of Microplastics in the Oceans

One of the major concerns regarding the presence of plastics in ocean environments are the effects on marine biota. Plastics can be distinguished in macro- (≥25 mm), meso- (<25 mm–5 mm) micro- (<5 mm–1 µm), and nano-plastic (<1 µm) and are practically omnipresent in aquatic habitats and subject to long-range transport. The purpose of this review is to report the last findings on the release, transfer, accumulation, and effects of micro-plastics, MPs, in the oceans. MPs have the chance to adsorb different kind of organisms and compounds on their outer surface, including bacteria, viruses, algae, and abiotic substances. In this way, they can cause sever hazard once they enter the food chain. Their harm to higher organisms is discussed as well as main routes of MPs–organism interactions, i.e., ventilation, and ingestion. Potential effects on populations, communities, and ecosystems and uptake routes and transition into tissues are discussed. In consideration of the potential threats of plastic particles to ecological functions and human health risks, we recommend specific directions of future research approaches

Advances in the Fate of Rare Earth Elements, REE, in Transitional Environments: Coasts and Estuaries

The production of rare earth elements, REE, has significantly increased over the past years, in parallel with the latest advances in nanotechnologies and representing a new group of emerging contaminants. They find application in construction, transport, agriculture, electronics, catalysis, and biomedicine. Their extraordinary intrinsic characteristics are fundamental for overcoming current technological challenges. The accumulation of REE is consistent in near-shore waters being affected by runoff, wastewater discharge, and proximity to built-up areas. Bioavailability in water, sediments, and accumulation in marine biota as well their endocrine disruptor effect is mostly unknown. There is a significant gap of knowledge on the ecotoxicological behaviour of REE in marine areas. The existing investigations have been performed inside well-mixed estuarine systems, due to complex hydrodynamics and multiple sediment transport situations. This hampers the definition of regulatory thresholds for REE concentrations and emissions. The review summarizes the existing information on REE geochemistry and physicochemical conditions influencing dissolution, surface complexation reactions, and distribution at the continent–ocean interface, as well as their speciation, bioavailability, and detrimental effects on living organisms. Strategies for reducing REE usage and inputs are also discusse

Cloud TAC: OpenStack and Technology Learning and Knowledge for teaching IT Infrastructure

In today's university environment, most students are digital natives. Therefore, it is difficult to imagine their academic life without relating it to the various cloud tools for communication and collaborative work. In this context, university professors work in new scenarios of communication and collaborative work in the classroom. This represents a transformation in the teaching-learning process assisted by new ICTs s in the cloud. Working in the cloud offers the opportunity to transmit new knowledge when using pedagogical strategies supported by computer technologies. With the combination of ICTs and modern teaching-learning processes, the concept of Learning and Knowledge Technologies (TAC) is valuable. This work exposes the academic experience of researching and developing Cloud Computing using an OpenStack configuration so that students can empower themselves with the knowledge and use of cloud technologies. Thus, to be able to teach concepts and practices on IT Infrastructure including activities such as: design, configuration, implementation and administration of a private cloud for academic uses.Instituto de Investigación en InformáticaInstituto de Investigación en Informátic

L’Arte dell’osservazione, dall’opera artistica alla diagnosi Le prime esperienze in Sapienza Università di Roma, a Medicina e Chirurgia

This study describes how Visual Thinking Strategies (VTS) as a methodological practice can help medical students learn and acquire analytical ability. This ability, capable of improving observational acumen and generally acquired only after years of clinical experience, may be achieved also by recourse to the systematic and reasoned examination of the visual arts, in particular paintings. Students attending the third year Medicine and Surgery degree-course, within the ambit of the faculty’s integrated medical-scientific and humanities teaching-learning activities, followed an elective course which began with a preparatory-explanatory lecture on the analytical methodologies applied to the study of art, followed by a practical workshop held at Rome’s Galleria Borghese and ended with a third and final lecture where the students themselves provided the teachers who conducted the course with direct feedback regarding the three phases of the course. The students’ appraisal of the experiences was positive; the experiment is on-going and has been extended to embrace other courses held by the Sapienza University. Further observations are needed at present to validate the effectiveness to medical training of this kind of course in the long term, even though the limited number of experiments carried out in other countries, whose historical and artistic heritages are undoubtedly not so rich as Italy’s, attest to their undeniable usefulness to students of medicine and surgery at both analytical and, no less important, humanistic-educational level

Infralittoral ostracoda and benthic foraminifera of the Gulf of Pozzuoli (Tyrrhenian Sea, Italy)

AbstractThe shallow water benthic foraminiferal and ostracod assemblages of the Gulf of Pozzuoli, located in the central Tyrrhenian Sea, were studied to investigate the relationship between calcareous meiofaunas and contaminant concentrations in bottom sediments exposed to prolonged industrial pollution. Both benthic foraminifers and ostracods displayed high-diversity and low-dominance, unusual features in highly contaminated environments. High-diversity values were possibly linked to the oligotrophic, well-oxygenated, and CaCO3-supersaturated coastal Mediterranean waters. The comparison with historical data suggested that assemblage composition changed in the last decades, with an increase in the relative abundance of benthic foraminiferal (Quinqueloculina seminulum, Bulimina elongata) and ostracod (Xestoleberis,Loxoconcha, Semicytherura rarecostata) taxa. They probably represent organisms tolerant to the environmental variations in the last decades. The relationships between granulometry and diversity indices, high correlation values betweenQuinqueloculina lataand heavy metal pollution, and the preference of the ostracod generaUrocythereisandParacytherideafor very shallow marine waters were highlighted

Topological First-Order Systems with Landau-Ginzburg Interactions

We consider the realization of N=2 superconformal models in terms of free first-order $(b,c,\beta,\gamma)$-systems, and show that an arbitrary Landau-Ginzburg interaction with quasi-homogeneous potential can be introduced without spoiling the (2,2)-superconformal invariance. We discuss the topological twisting and the renormalization group properties of these theories, and compare them to the conventional topological Landau-Ginzburg models. We show that in our formulation the parameters multiplying deformation terms in the potential are flat coordinates. After properly bosonizing the first-order systems, we are able to make explicit calculations of topological correlation functions as power series in these flat coordinates by using standard Coulomb gas techniques. We retrieve known results for the minimal models and for the torus.Comment: 37 page

Hydrogeological and hydrogeochemical monitoring in the Cumae archaeological site (Phlegraean Fields, southern Italy)

Phlegraean Fields, hydrogeological model, hydrochemical facie

In search of hepatitis E virus infection in wild boar and cattle from Argentina

Hepatitis E virus (HEV) is a pathogen with zoonotic potential that affects domestic pigs, wild boar Sus scrofa, and humans, among other species. The HEV has been reported in wild boar from Argentina and Uruguay, but knowledge about the epidemiology of this virus is still very scarce in this region. The objective of this study was to evaluate the circulation of HEV in wild boar and cattle from Argentina through serological (ELISA) and molecular (PCR) analyses. All samples were negative. However, we stress the importance of reporting negative cases since these represent key inputs in future research and risk analysis, mainly in association with the potential for virus transmission between wild boar and susceptible native species.El virus de hepatitis E (VHE) es un patógeno con potencial zoonótico que afecta al cerdo doméstico, al jabalí Sus scrofa y al ser humano, entre otras especies. El VHE ha sido reportado en jabalíes de Argentina y Uruguay, pero el conocimiento acerca de la epidemiología de este virus es aún muy escaso en la región. El objetivo del presente estudio fue evaluar la circulación del VHE es poblaciones de jabalí y ganado vacuno en Argentina, a través de análisis serológicos (ELISA) y moleculares (PCR). No se hallaron muestras positivas. Sin embargo, se resalta la importancia de reportar casos negativos como insumo clave de futuras investigaciones y análisis de riesgo, sobre todo en relación a una posible transmisión del virus entre jabalíes y especies nativas susceptibles.Instituto de BiotecnologíaFil: La Sala, Luciano Francisco. Universidad Nacional del Sur. Instituto de Ciencias Biológicas y Biomédicas del Sur; ArgentinaFil: La Sala, Luciano Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Barandiaran, Soledad. Universidad de Buenos Aires. Instituto de Investigaciones en Producción Animal; ArgentinaFil: Barandiaran, Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Eirin, Maria Emilia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; ArgentinaFil: Eirin, Maria Emilia. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ferrara Muñiz, Ximena. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; ArgentinaFil: Ferrara Muñiz, Ximena. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Abate, Sergio. Universidad Nacional de Río Negro-Sede Atlántica. Centro de Investigaciones y Transferencia de Río Negro; ArgentinaFil: Abate, Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sánchez Puch, Silvia. Universidad de Buenos Aires. Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPAM); ArgentinaFil: Sánchez Puch, Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Mathet, Verónica. Universidad de Buenos Aires. Instituto de Investigaciones en Microbiología y Parasitología Médica; ArgentinaFil: Mathet, Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Delfino, Cecilia María. Universidad de Buenos Aires. Instituto de Investigaciones en Microbiología y Parasitología Médica; ArgentinaFil: Delfino, Cecilia María. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

En busca del virus de la hepatitis E en jabalíes y vacunos de Argentina

El virus de hepatitis E (VHE) es un patógeno con potencial zoonótico que afecta al cerdo doméstico, al jabalí Sus scrofa y al ser humano, entre otras especies. El VHE ha sido reportado en jabalíes de Argentina y Uruguay, pero el conocimiento acerca de la epidemiología de este virus es aún muy escaso en la región. El objetivo del presente estudio fue evaluar la circulación del VHE es poblaciones de jabalí y ganado vacuno en Argentina, a través de análisis serológicos (ELISA) y moleculares (PCR). No se hallaron muestras positivas. Sin embargo, se resalta la importancia de reportar casos negativos como insumo clave de futuras investigaciones y análisis de riesgo, sobre todo en relación a una posible transmisión del virus entre jabalíes y especies nativas susceptibles.Hepatitis E virus (HEV) is a pathogen with zoonotic potential that affects domestic pigs, wild boar Susscrofa, and humans, among other species. The HEV has been reported in wild boar from Argentinaand Uruguay, but knowledge about the epidemiology of this virus is still very scarce in this region. Theobjective of this study was to evaluate the circulation of HEV in wild boar and cattle from Argentinathrough serological (ELISA) and molecular (PCR) analyses. All samples were negative. However, westress the importance of reporting negative cases since these represent key inputs in future researchand risk analysis, mainly in association with the potential for virus transmission between wild boarand susceptible native species.Fil: la Sala, Luciano Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Ciencias Biológicas y Biomédicas del Sur. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Instituto de Ciencias Biológicas y Biomédicas del Sur; ArgentinaFil: Barandiaran, Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Unidad Ejecutora de Investigaciones en Producción Animal. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. Unidad Ejecutora de Investigaciones en Producción Animal; ArgentinaFil: Eirin, Maria Emilia. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Agrobiotecnología y Biología Molecular. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Agrobiotecnología y Biología Molecular; ArgentinaFil: Ferrara Muñiz, Ximena. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Agrobiotecnología y Biología Molecular. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Agrobiotecnología y Biología Molecular; ArgentinaFil: Abate, Sergio Damian. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro de Investigaciones y Transferencia de Rio Negro. Sede Choele Choel del Centro de Investigaciones y Transferencia de Rio Negro | Universidad Nacional de Rio Negro. Centro de Investigaciones y Transferencia de Rio Negro. Sede Choele Choel del Centro de Investigaciones y Transferencia de Rio Negro.; ArgentinaFil: Sanchez Puch, Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones en Microbiología y Parasitología Médica. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones en Microbiología y Parasitología Médica; ArgentinaFil: Mathet, Veronica Lidia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones en Microbiología y Parasitología Médica. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones en Microbiología y Parasitología Médica; ArgentinaFil: Delfino, Cecilia María. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones en Microbiología y Parasitología Médica. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones en Microbiología y Parasitología Médica; Argentin