Open heavy-flavour measurements in pp and p--Pb collisions with ALICE at the LHC

The ALICE detector is well suited to measure heavy-flavour (charm and beauty) production via hadronic and semi-leptonic decay channels of heavy-flavour particles. Here an overview of heavy-flavour measurements made with the ALICE detector during Run 1 in pp and p--Pb collisions is presented and discussed.Comment: Proceedings of 55th International Winter Meeting on Nuclear Physics, Bormio, Italy, 23-27 January 2017. 10 pages, 6 figure

Charmed meson and baryon measurements in pp and p-Pb collisions with ALICE at the LHC

We present here recent open heavy-flavour results from the ALICE experiment, including measurements of D-meson, $\mathrm{\Lambda_{c}^{+}}$ baryon and $\mathrm{\Xi_c^0}$ baryon production in pp collisions at $\sqrt{s} = 7~\mathrm{TeV}$ and p-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02~\mathrm{TeV}$.Comment: Proceedings of 17th International Conference on Strangeness in Quark Matter, 10-15 July 201

Experimental Status of Jets in Heavy-Ion Collisions

Jet quenching has been one of the most important indicators that ultra-relativistic heavy-ion collisions produce a deconfined state of quarks and gluons, known as the Quark-Gluon Plasma. While the quenching of jets traditionally refers to the energy loss of high-momentum partons, the study of jet quenching has grown into a multi-pronged field where the measurement of jets and their modification in heavy-ion collisions is used as an important tool to study many aspects of QCD deconfinement. This contribution reviews the current experimental status of jets at the LHC and RHIC, and reports recent experimental highlights

Establecimiento y multiplicación in vitro de Podocarpus oleifolius D. Don

Romerillo (Podocarpus oleifolius D. Don) is the only endemic conifer of Ecuador and is considered endangered. The objective of this research was to establish and to in vitro multiply of P. oleifolius via direct organogenesis from apical segments of young trees grown in field. For disinfection, four concentrations of sodium hypochlorite (NaOCl) (1.0, 1.25, 1.5 and 1.75%) for 10 min and then 70% ethanol for 30 s were studied. At four weeks of culture, the number of necrotic explants contaminated, viable (survival) and mortality was quantified. Furthermore, the effect of the MS salts concentration (50 and 100%) and Benzyl amino purine (BAP) (0.5 and 1.0 mg l-1) was determined. At four weeks of culture the apical bud length (cm) was measured and the number of sprouted buds was quantified. To in vitro multiply obtained romerillo sprouts, it was added different concentrations of BAP and Indol Butyric Acid (IBA) to the culture medium. The number of shoots formed per explant was quantified and the length of the apical bud (cm) was measured in three subcultures. With 1.25% NaOCl the highest percentage of viable explants with low percentages of microbial contamination and necrotic explants was obtained. The higher percentage of sprouted buds was obtained in explants grown in culture media without BAP and the highest values of the apical bud length in MS medium. In vitro multiplication of P. oleifolius it was achieved. However, growth regulators BAP and AIB at concentrations tested did not increase the number of shoots per explant. This work serves as a guideline for the implementation of a system for large-scale propagation of this plant species. Key words: apical bud, plant tissue culture, plant growth regulators, shoots, viabilityEl romerillo (Podocarpus oleifolius D. Don), es la única conífera endémica de Ecuador y está considerada en peligro de extinción. El objetivo de esta investigación fue establecer y multiplicar in vitro P. oleifolius vía organogénesis directa a partir de segmentos apicales de árboles jóvenes cultivados en campo. Para la desinfección se estudiaron cuatro concentraciones de hipoclorito de sodio (NaOCl) (1.0, 1.25, 1.5 y 1.75%) por 10 min y luego etanol al 70% durante 30 s. A las cuatro semanas de cultivo, se cuantificó el número de explantes necrosados, contaminados,viables (supervivencia)y con mortalidad. Además, se determinó el efecto de la concentración de sales MS (50 y 100%) y Bencil Amino Purina (BAP) (0.5 y 1.0 mg l-1). A las cuatro semanas de cultivo se midió la longitud de la yema apical (cm) y se cuantificó el número de yemas brotadas.Para multiplicar in vitro los brotes de romerillo obtenidos, se añadieron al medio de cultivo diferentes concentraciones de BAP y Ácido Indol Butírico (AIB). Se cuantificó el número de brotes formados por explante y se midió la longitud de la yema apical (cm) en tres subcultivos.Con NaOCl al 1.25% se obtuvo el más alto porcentaje de explantes viables con porcentajes bajos de contaminación microbiana y explantes necrosados. El mayor porcentaje de yemas brotadas se obtuvo en los explantes cultivados en los medios de cultivo sin BAP y los valores más altos de longitud de la yema apical en el medio de cultivo MS. Se logró la multiplicación in vitro de P. oleifolius. Sin embargo, los reguladores del crecimiento BAP y AIB a las concentraciones probadas no aumentaron el número de brotes por explante. Este trabajo sirve como pauta para la implementación de un sistema de propagación a gran escala de esta especie vegetal. Palabras clave: brotes, cultivo de tejidos, reguladores del crecimiento, viabilidad, yema apica

Obtención de embriones somáticos de Parajubaea cocoides Burret a partir de embriones cigóticos inmaduros

Cumbé coconut palm (Parajubaea cocoides Burret) is an ornamental species endemic of Ecuador. It is threatened by environmental and socioeconomic factors. Your sexual propagation by seed, is not effective. Tissue culture can become an alternative and within this, somatic embryogenesis. The objective of this research was to obtain somatic embryos in semi-solid and liquid media culture from immature zygotic embryos. The explants were collected from mature plants and fruits were placed to form calli in culture medium with different concentrations of 2,4-D and activated carbon. Callus with embryogenic structures were used to form embryos in semisolid medium with BAP and kinetin and in liquid culture medium with BAP. The results showed that in treatments without activated carbon or low concentrations of 2,4-D no callus were formed. With 60 mg l-1 2,4-D and 1 g l-1 activated charcoal, friable callus were obtained. It was possible to obtain somatic embryos in semisolid and liquid culture medium, with higher number in liquid. The results provide the basis for propagating this species by somatic embryogenesis. Key words: calli, ornamental, growth regulators, palmLa palma coco cumbé (Parajubaea cocoides Burret), es una especie ornamental, endémica del Ecuador. Se encuentra amenazada de extinción por factores ambientales y socioeconómicos. Su propagación sexual mediante semillas, no es eficaz. El cultivo de tejidos puede convertirse en una alternativa y dentro de este, la embriogénesis somática. El objetivo de esta investigación fue obtener embriones somáticos en medios de cultivo semisólido y líquido, a partir de embriones cigóticos inmaduros. Los explantes se colectaron de frutos de plantas adultas y se colocaron a formar callos en medio de cultivo con diferentes concentraciones de 2,4-D y carbón activado. Los callos con estructuras embriogénicas se emplearon para formar embriones en medio de cultivo semisólido con BAP y kinetina y en medio de cultivo líquido con BAP. Los resultados, mostraron que en los tratamientos sin carbón activado o con bajas concentraciones de 2,4-D no se formaron callos. Con 60 mg l -1 de 2,4-D y 1 g l -1 de carbón activado se obtuvieron callos friables. Fue posible obtener embriones somáticos tanto en medio de cultivo semisólido como líquido, con mayor número en este último. Los resultados sientan las bases para la propagación de esta especie por embriogénesis somática

Hypertension, Diabetes and Overweight: Looming Legacies of the Biafran Famine

Early life environment has in previous research been linked to risk of disease in adulthood. This thesis investigated three types of early life exposures and their potential associations with adult life cardiovascular risk. It has been proposed that early life malnutrition underpins the ongoing epidemic of lifestyle-related diseases in Sub-Saharan Africa. We examined the association between exposure to the Biafra famine (1968-1970) and cardiovascular risk in 1,339 Nigerians. Individuals exposed to famine in fetal-infant life had higher blood pressure, plasma glucose and BMI compared to individuals born after the famine. Malnutrition in early life may contribute to the burden of lifestyle- related disease in Sub-Saharan Africa (Paper I). Vitamin D deficiency is prevalent among women of childbearing age worldwide. Adult vitamin D deficiency has been linked to increased risk of cardiovascular disease, impaired glucose tolerance and obesity. We aimed to assess whether vitamin D status at birth is related to cardiovascular risk in adulthood. In paper II, neonatal vitamin D concentrations from stored blood samples were measured and cardiovascular risk markers assessed in 275 individuals aged 35 years born either in the end of the summer or in the end of the winter. We found no associations between low neonatal vitamin D status and cardiovascular risk at 35 years of age. However, men and women in the highest neonatal vitamin D quintile were at higher risk of being overweight (Paper II). The prime determinant of vitamin D status is exposure to sunlight. Month of birth is a proxy for a number of seasonally dependent environmental exposures including nutrition, infections, lifestyle factors – and vitamin D. At high latitudes, vitamin D levels in populations are lower in the winter compared to the summer due to scarce sunlight exposure. In the Swedish population aged 30 or above (>6 million individuals), followed from 1991 during 20 years, individuals born during autumn months lived longer than those born during spring months. The association between month of birth and mortality was particularly pronounced in the age-span 50 to 80 years and not significant before 50 years (Paper III). In the age-span 50 to 80 years, cardiovascular mortality was increased among spring-born compared to autumn-born. (Paper IV) Although individuals born in Sweden during the spring had an increased risk of cardiovascular mortality in ages 50 to 80 years (paper IV), the effect sizes were small. The lack of an association between low neonatal vitamin D status and adult cardiovascular risk in paper II indicate that vitamin D levels at birth may not be of sizeable importance to adult life cardiovascular health

Field-Induced Quantum Criticality of Systems with Ferromagnetically Coupled Structural Spin Units

The field-induced quantum criticality of compounds with ferromagnetically coupled structural spin units (as dimers and ladders) is explored by applying Wilson's renormalization group framework to an appropriate effective action. We determine the low-temperature phase boundary and the behavior of relevant quantities decreasing the temperature with the applied magnetic field fixed at its quantum critical point value. In this context, a plausible interpretation of some recent experimental results is also suggested.Comment: to be published in Physics Letters

Empatía, inteligencia emocional y tolerancia a la diversidad en estudiantes de educación de una universidad pública peruana

The objectives of the research were, firstly, to determine the levels of emotional intelligence, empathy and tolerance to diversity in a sample of 181 students in education; secondly, to establish the relationship between the three study variables and, finally, to determine if there are differences in these variables due to sex, study cycle and religious denominations. The instruments used were the Meta-Mood Scale 24 Trait, the Cognitive and Affective Empathy Test, and a diversity tolerance instrument. The results arrived at indicate that most students have a high level of tolerance for diversity and empathy, and an average level of emotional intelligence. The relationship between scores of emotional intelligence and empathy was confirmed, as well as the scores between empathy and tolerance of diversity, but not between emotional intelligence and tolerance of diversity. Likewise, it was found that there is a difference in tolerance to diversity and in empathy between males and females, in favor of the latter; that there is no difference according to the cycle of studies in any of the variables studied; and that students who profess the Catholic religion present a higher level of empathy than non-believers.Los objetivos de la investigación fueron, en primer lugar, determinar los niveles de la empatía, inteligencia emocional y la tolerancia a la diversidad en una muestra conformada por 181 estudiantes de educación; en segundo lugar, establecer la relación existente entre las tres variables de estudio y, finalmente, determinar si hay diferencias en dichas variables debidas al sexo, el ciclo de estudios y las confesiones religiosas. Los instrumentos utilizados fueron el Trait Meta-Mood Scale-24, el Test de Empatía Cognitiva y Afectiva, y un instrumento de tolerancia a la diversidad. Los resultados a los que se arribaron indican la mayor parte de los estudiantes tiene un nivel alto de tolerancia a la diversidad y de empatía, y un nivel promedio de inteligencia emocional. Se confirmó la relación existente entre las puntuaciones de inteligencia emocional y empatía, así como las puntuaciones entre empatía y tolerancia a la diversidad, pero no entre inteligencia emocional y tolerancia a la diversidad. Asimismo, se encontró que hay diferencia en tolerancia a la diversidad y en empatía entre varones y mujeres, a favor de estas últimas; que no hay diferencia en función al ciclo de estudios en ninguna de las variables estudiadas; y que los estudiantes que profesan la religión católica presentan un mayor nivel de empatía que los alumnos no creyentes

La imagen y la narrativa como herramientas para el abordaje psicosocial en escenarios de violencia. Departamento de Bogotá, D. C. Colombia.

La imagen y la narrativa como herramientas para el abordaje psicosocial en escenarios de violencia. Departamento de Bogotá, D. C. Colombia.Tratar desde el análisis subjetivo en este diplomado temas problémicos de violencia, permite para sus autores la categorización de necesidades sociales y comunitarias con mirada profesional; pues la interrelación de contextos con situaciones similares relacionadas con la violencia, la guerra, la indiferencia, el olvido y las realidades, solo están en quienes lo viven y lo sienten.Treat from the subjective analysis in this diploma issues of violence, allows for its authors the categorization of social and community needs with professional eyes; because the interrelation of contexts with similar situations related to violence, war, indifference, forgetfulness and realities, are only in those who live it and feel it. We find here, a brief analysis to the story of "Angelica" along with a trilogy of strategic, circular and reflective questions duly justified from their relevance. Finally, and for the case "Cacarica", we will find three Psychosocial proposals that from their analysis reveal the appropriation of the topics addressed in our diploma. We intend from the connection of learned knowledge, to approach the realities that leave us decades of violence and marginalization in hundreds of families; from their narrative approaches they help us to consider their great psychosocial needs by their stories from the narrative perspective that call us to efforts within the professional field to construct questions from the Psychosocial approach. These actions are already available on the way to sustainability and socialization within the framework of the diploma thesis to document subjective forms in these scenarios studied together with an imaginary of alternatives that will be available within the toolbox in the repository of our National University Open and Distance (Unad)