Neutral Pion Asymmetries at Intermediate Pseudorapidity in Transversely Polarized p + p Collisions at √ s = 200 GeV

Among the unanswered questions pertaining to nucleon spin physics is the origin of large azimuthal asymmetries (AN ) found in π forward pseudorapidity, η, from high-energy transversely polarized p + p collisions. One possible explanation is offered by twist-3 parton distribution and fragmentation functions. In order to test these and other mechanisms, it is important to study how the asymmetry changes over a range of pion kinematics. The STAR Endcap Electromagnetic Calorimeter (EEMC) is the only RHIC detector with the ability to study AN for π available at intermediate pseudorapidity, 0.8 ≤ η ≤ 2.0. STAR recently published the first measurement of AN for π using data collected in 2006 with collision energy √ STAR collected a high-statistics dataset with transverse beam polarization at √ s = 200 GeV. This offers over a five-fold increase in integrated luminosity relative to the 2006 dataset and a chance to enhance the precision of the previous results. The primary objective of this study is to determine the quality of the data from 2012 and to estimate the final statistical uncertainty.Preliminary results from this study indicate a significant improvement over the 2006 results

Investigations of organic food and health

Numerous studies have attempted to elucidate if there is a difference in the effect on human health, between food produced according to the organic standards compared with conventionally produced food. While many studies support a few general trends of differences in food composition, none have provided any conclusive evidence for differences in the effects on human health. Most of the studies have been inadequate in size or focus to allow any definitive conclusions. The major problem is the complexity of the issue, and the general paucity of knowledge about the impact of food on health, which means that it is virtually impossible to tackle all relevant uncertainties in any one study. Instead a whole range of different types of studies are needed to provide a conclusion. Presently, a study is in progress, which attempts to provide some of the missing key information on this issue. This study comprises controlled cultivation of plants in three different models of growing systems for two years, and feeding rats for 3 generations on diets composed of these plants. It will show if food from different growing systems can result in differences in health of rats, and if so, which aspects of health are affected. However, if differences are found, subsequent studies will be necessary to determine the applicability and possible consequences for human health. Still, together with other existing and planned studies it might soon be possible to determine some of the consequences for human health of the methods used for food production. This could result in increased demand for organic food, and it could at the same time lead to changes in the farming methods in either organic or conventional production systems. In any case, this type of research will improve crucial aspects of the knowledge base, which is needed also in other contexts, to support the efforts to improve food safety and quality

El poblamiento rural en la Galicia Romana. Un ejemplo : las villae. Metodología y Problemática en su estudio

Jornadas de Jóvenes en Investigación Arqueológica, JIA (3as : 5-7 de mayo 2010 : Universitat Autònoma de Barcelona). Sesión 3. Indicios arqueológicos de la vertebración del territorio y su poblamiento desde época ibérica hasta la Tardoantigüedad en la Península Ibérica.En esta comunicación trataremos de exponer el proyecto que estamos llevando a cabo en estos momentos con objeto de realizar nuestra tesis doctoral. El tema a desarrollar se encuentra dentro del mundo del poblamiento rural romano y, en concreto, se centra dentro de un tipo significativo de asentamientos, las villae. El territorio objeto de estudio se sitúa en la zona N.O. peninsular, correspondiéndose con el conventus lucensis, y partes del bracarensis y asturicensis, dentro de los límites de la actual Galicia. Asimismo, realizaremos sobre la marcha un breve análisis acerca de este fenómenoIn this paper we will make a brief presentation of my Thesis Project. The means of the research will be the roman rural settlements, in this case, we will concentrate our efforts in one specific type, the villae. Our study area is located in the N.W. of the Iberian Peninsula, within the ancient conventus lucensis, and parts of bracarensis and asturicensis, in the territory of the actual Galicia. Furthermore, we will perform a brief analysis on this particular phenomenon.En aquesta comunicació tractarem d'exposar el projecte que estem duent a terme en aquests moments a fi de realitzar la nostra tesi doctoral. El tema a desenvolupar es troba dins del món del poblament rural romà i, en concret, se centra dins d'un tipus significatiu d'assentaments, les villae. El territori objecte d'estudi es situa a la zona NO peninsular, corresponent-se amb el conventus lucensis, i parts del Bracarensis i Asturicensis, dins dels límits de l'actual Galícia. Així mateix, farem sobre la marxa una breu anàlisi sobre aquest fenomen

Cactus: Issues for Sustainable Simulation Software

The Cactus Framework is an open-source, modular, portable programming environment for the collaborative development and deployment of scientific applications using high-performance computing. Its roots reach back to 1996 at the National Center for Supercomputer Applications and the Albert Einstein Institute in Germany, where its development jumpstarted. Since then, the Cactus framework has witnessed major changes in hardware infrastructure as well as its own community. This paper describes its endurance through these past changes and, drawing upon lessons from its past, also discusses futureComment: submitted to the Workshop on Sustainable Software for Science: Practice and Experiences 201

Determination of the Gaussian (Saddle-Splay) Modulus for Lipid Bilayers from Atomistic and Coarse Grained Simulations

Hom Santolaia, Cinto; Casamor Maldonado, Carlo