Manufacturing of Annular Targets Made of LEU Foil Coated with Electrodeposited Nickel

AbstractThe results achieved in the development of an annular target manufacturing technology for Mo-99 radioisotope production, with targets containing a low enriched uranium LEU foil, are presented in this paper. The paper describes the annular targets manufacture comprising the uranium foil and a thin layer of nickel obtained by electroplating on the surface of the uranium, resulting in Ni deposits with thickness of 15 to 25 microns. It was necessary to determine the potential to avoid the presence of uranium oxide and also to determine the intensity (amperage) at which its formation begins. The results obtained, showed that the mass of Ni deposited on the uranium foil is proportional to the electroplating time and the current intensity. Ultrasonic Tests and Screen Electronic Microscopy revealed good bonding and homogeneity of the nickel deposit. The Ni layer had a high hardness and a relatively small grain size with an orientation in the direction of the electrical current flow

Determinar la viabilidad de exportación de la salsa marca Jachili para Asia

El objetivo de este trabajo fue determinar la viabilidad de exportación para los productos de Jachili a Asia, en relación a los cuatro países seleccionados: Japón, China, Corea del Sur y Singapur para diciembre de 2018. El proyecto consistió en realizar la investigación de los posibles países a los que se pudieran exportar los productos de la empresa Jachili. En la primera fase se realizó una selección de mercado a nivel mundial, y descarte de zonas geográficas, en relación a los hábitos de consumo principalmente. Después de que se escogió el área a la que se iba a buscar exportar el producto y se hizo una investigación cualitativa y cuantitativa para escoger los 4 países finalistas, en esta investigación se vio el PIB, el PIB per cápita, el valor y volumen de las importaciones de este tipo de productos al país y si se contaba con tratados libre de comercio o algún acuerdo comercial. A partir de este punto se buscó información de cada uno de los países. Se investigó la información general del país, de la población y características de la gente. En cuanto a alimentos investigamos el volumen de importación y exportación, tipos de condimentos, cual es la tendencia en cuanto a consumo salsas, los hábitos de consumo y quienes son la competencia. Se documentaron las mejores rutas y las barreras arancelarias y no arancelarias de los países. Finalmente se proporcionaron recomendaciones y conclusiones de la viabilidad y posible aceptación, cual fue el país con más posibilidades de éxito y cual el que menos posibilidades tiene de acuerdo a la investigación realizada.ITESO, A.C

In-situ and Ex-situ characterization of III-V semiconductor materials and solar cells upon 10 MEV proton irradiation

In this work we present the results and analysis of a 10 MeV proton irradiation experiment performed on III-V semiconductor materials and solar cells. A set of representative devices including lattice-matched InGaP/GaInAs/Ge triple junction solar cells and single junction GaAs and InGaP component solar cells and a Ge diode were irradiated for different doses. The devices were studied in-situ before and after each exposure at dark and 1 sun AM0 illumination conditions, using a solar simulator connected to the irradiation chamber through a borosilicate glass window. Ex-situ characterization techniques included dark and 1 sun AM0 illumination I-V measurements. Furthermore, numerical simulation of the devices using D-AMPS-1D code together with calculations based on the TRIM software were performed in order to gain physical insight on the experimental results. The experiment also included the proton irradiation of an unprocessed Ge solar cell structure as well as the irradiation of a bare Ge(100) substrate. Ex-situ material characterization, after radioactive deactivation of the samples, includes Raman spectroscopy and spectral reflectivity

Effects of 10 MeV proton irradiation on III-V solar cells

In this work we present our latest results and analysis of a 10 MeV proton irradiation experiment performed on III-V solar cells. A set of representative devices were irradiated for different fluences, including latticematched GaInP/GaInAs/Ge triple junction, GaInP/Ge double junction, and GaAs and Ge single junction solar cells. The methodology applied included the irradiation of two devices of each type; for a better control of the measurements, non-irradiated devices with the same characteristics of those irradiated were used as reference. The devices were monitored before and after each exposure by in-situ characterization of the electrical response under dark and under illumination using a solar simulator connected to the irradiation chamber through a borosilicate glass window. Ex-situ characterization techniques included dark and 1 sun AM0 illumination I-V curve and external quantum efficiency measurements. Furthermore, results of the numerical simulation of devices with D-AMPS-1D code are presented in order to give a physical interpretation of the results. DLTS spectroscopy preliminary results for single junction GaAs cells are also presented

CHICKEN COOPS, Triatoma dimidiata INFESTATION AND ITS INFECTION WITH Trypanosoma cruzi IN A RURAL VILLAGE OF YUCATAN, MEXICO

This study longitudinally investigated the association between Triatoma dimidiata infestation, triatomine infection with Trypanosoma cruzi and household/backyard environmental characteristics in 101 homesteads in Molas and Yucatan, Mexico, between November 2009 (rainy season) and May 2010 (dry season). Logistic regression models tested the associations between insect infestation/infection and potential household-level risk factors. A total of 200 T. dimidiata were collected from 35.6% of the homesteads, mostly (73%) from the peridomicile. Of all the insects collected, 48% were infected with T. cruzi. Infected insects were collected in 31.6% of the homesteads (54.1% and 45.9% intra- and peridomiciliary, respectively). Approximately 30% of all triatomines collected were found in chicken coops. The presence of a chicken coop in the backyard of a homestead was significantly associated with both the odds of finding T. dimidiata (OR = 4.10, CI 95% = 1.61-10.43, p = 0.003) and the presence of triatomines infected with T. cruzi (OR = 3.37, CI 95% = 1.36-8.33, p = 0.006). The results of this study emphasize the relevance of chicken coops as a putative source of T. dimidiata populations and a potential risk for T. cruzi transmission

MASTREE+ : time-series of plant reproductive effort from six continents

Significant gaps remain in understanding the response of plant reproduction to environmental change. This is partly because measuring reproduction in long-lived plants requires direct observation over many years and such datasets have rarely been made publicly available. Here we introduce MASTREE+, a data set that collates reproductive time-series data from across the globe and makes these data freely available to the community. MASTREE+ includes 73,828 georeferenced observations of annual reproduction (e.g. seed and fruit counts) in perennial plant populations worldwide. These observations consist of 5971 population-level time-series from 974 species in 66 countries. The mean and median time-series length is 12.4 and 10 years respectively, and the data set includes 1122 series that extend over at least two decades (≥20 years of observations). For a subset of well-studied species, MASTREE+ includes extensive replication of time-series across geographical and climatic gradients. Here we describe the open-access data set, available as a.csv file, and we introduce an associated web-based app for data exploration. MASTREE+ will provide the basis for improved understanding of the response of long-lived plant reproduction to environmental change. Additionally, MASTREE+ will enable investigation of the ecology and evolution of reproductive strategies in perennial plants, and the role of plant reproduction as a driver of ecosystem dynamics

Aspectos históricos y políticos del federalismo argentino

Como en el tomo primero -que analizara los aspectos fiscales y económicos-, también hemos concretado una visión interdisciplinaria, en este caso de historiadores, juristas y politólogos, sobre un fenómeno tan complejo como el del proceso federal de nuestro país, en lo específicamente histórico y político.Introducción / Antonio María Hernández -- ASPECTOS HISTÓRICOS DEL FEDERALISMO ARGENTINO. Aspectos históricos y políticos del federalismo argentino / Antonio María Hernández -- El origen del federalismo, su consolidación en Iberoamérica, y la lucha por la libertad / Eugenio Luis Palazzo -- Confederación y Estado federal en la historia constitucional / Antonio Castagno -- El federalismo en la República Argentina / Eduardo Martiré -- El anhelo constituyente / Isidoro J. Ruiz Moreno -- La tragedia del federalismo argentino / Armando Raúl Bazán -- El federalismo en la Argentina / Alberto Zarza Mensaque -- Federalismo: aspectos históricos en la República Argentina. Proyecciones en el presente / Néstor Osvaldo Losa -- La reconstrucción del orden constitucional por las provincias / Sergio Díaz Ricci -- Los modelos históricos y la arquitectura rentística argentina de 1853-60-66 / Miguel Angel Asensio -- La federación argentina como resultado estratégico de los conflictos interprovinciales / Julio Saguir -- ASPECTOS POLÍTICOS DEL FEDERALISMO ARGENTINO. Consideraciones en torno al federalismo argentino / Daniel Alberto Sabsay -- Ilegitimidades constitucionales en nombre del federalismo / Mario A. R. Midón -- Aspectos políticos del federalismo / Guillermo E. Barrera Buteler -- Notas sobre organización y funcionamiento de los partidos políticos en el federalismo argentino / José Manuel Belisle (h) -- ASPECTOS HISTÓRICOS Y POLÍTICOS DEL FEDERALISMO ARGENTINO. Federalismo agrario, derecha e izquierda. Una respuesta en Norberto Bobbio / Enrique José Marchiaro --Fil: Hernández, Antonio María. Academia Nacional de Derecho y Ciencias Sociales de Córdoba; Argentina.Fil: Palazzo, Eugenio Luis. Academia Nacional de Derecho y Ciencias Sociales de Córdoba; Argentina.Fil: Castagno, Antonio. Academia Nacional de Derecho y Ciencias Sociales de Córdoba; Argentina.Fil: Martiré, Eduardo. Academia Nacional de Derecho y Ciencias Sociales de Buenos Aires; Argentina.Fil: Ruíz Moreno, Isidoro J. Academia Nacional de Derecho y Ciencias Sociales de Buenos Aires; Argentina.Fil: Bazán, Armando Raúl. Academia Nacional de Derecho y Ciencias Sociales de Buenos Aires; Argentina.Fil: Zarza Mensaque, Alberto. Academia Nacional de Derecho y Ciencias Sociales de Córdoba; Argentina.Fil: Losa, Néstor Osvaldo. Academia Nacional de Derecho y Ciencias Sociales de Córdoba; Argentina.Fil: Díaz Ricci, Sergio. Academia Nacional de Derecho y Ciencias Sociales de Córdoba; Argentina.Fil: Asensio, Miguel Ángel. Academia Nacional de Derecho y Ciencias Sociales de Córdoba; Argentina.Fil: Saguir, Julio. Academia Nacional de Derecho y Ciencias Sociales de Córdoba; Argentina.Fil: Sabsay, Daniel Alberto. Academia Nacional de Derecho y Ciencias Sociales de Córdoba; Argentina.Fil: Midón, Mario A. R. Academia Nacional de Derecho y Ciencias Sociales de Córdoba; Argentina.Fil: Barrera Buteler, Guillermo E.. Academia Nacional de Derecho y Ciencias Sociales de Córdoba; Argentina.Fil: Belisle (h), José Manuel. Academia Nacional de Derecho y Ciencias Sociales de Córdoba; Argentina.Fil: Marchiaro, Enrique José. Academia Nacional de Derecho y Ciencias Sociales de Córdoba; Argentina

An international effort towards developing standards for best practices in analysis, interpretation and reporting of clinical genome sequencing results in the CLARITY Challenge

There is tremendous potential for genome sequencing to improve clinical diagnosis and care once it becomes routinely accessible, but this will require formalizing research methods into clinical best practices in the areas of sequence data generation, analysis, interpretation and reporting. The CLARITY Challenge was designed to spur convergence in methods for diagnosing genetic disease starting from clinical case history and genome sequencing data. DNA samples were obtained from three families with heritable genetic disorders and genomic sequence data were donated by sequencing platform vendors. The challenge was to analyze and interpret these data with the goals of identifying disease-causing variants and reporting the findings in a clinically useful format. Participating contestant groups were solicited broadly, and an independent panel of judges evaluated their performance. RESULTS: A total of 30 international groups were engaged. The entries reveal a general convergence of practices on most elements of the analysis and interpretation process. However, even given this commonality of approach, only two groups identified the consensus candidate variants in all disease cases, demonstrating a need for consistent fine-tuning of the generally accepted methods. There was greater diversity of the final clinical report content and in the patient consenting process, demonstrating that these areas require additional exploration and standardization. CONCLUSIONS: The CLARITY Challenge provides a comprehensive assessment of current practices for using genome sequencing to diagnose and report genetic diseases. There is remarkable convergence in bioinformatic techniques, but medical interpretation and reporting are areas that require further development by many groups