2,107 research outputs found

    Propuesta de inspección higiénico sanitario en plantas pesqueras e inspección de harina de pescado en el organismo de inspección Fish Inspection

    Get PDF
    Ciclo Optativo de Especialización y Profesionalización en Gestión de Calidad Total y ProductividadEl presente trabajo de investigación no experimental tuvo como objetivo realizar una propuesta en el Organismo de Inspección FISH INSPECTION para ampliar su alcance en Inspección Higiénico Sanitaria en Plantas de Procesamiento de Recursos Hidrobiológicos e Inspección de Lotes de Harina de Pescado, en base a la norma NTP ISO/IEC 17020:2009. Para cumplir con el objetivo, se planteó una propuesta de mejora que consistió en elaborar la documentación requerida para una posterior ampliación del alcance del Organismo de Inspección. Para la elaboración del diagnóstico se empleó la lista de verificación de la NTP ISO/IEC 17020:2009, empleando una escala de O a 2 puntos para cada pregunta. La calificación del nivel de cumplimiento del Organismo de Inspección se realizó en función a los pontajes totales. De acuerdo al diagnóstico efectuado en el Organismo de Inspección, se obtuvo un pontaje total de 226 de 248 puntos, resultado que evidencia el cumplimiento del 91 % de los requisitos para la Inspección Higiénico Sanitaria en Plantas de Procesamiento de Recursos Hidrobiológicos e Inspección de Lotes de Harina de Pescado. Los incumplimientos encontrados durante el diagnóstico se deben a que el Organismo de Inspección, al ampliar el alcance del proceso de inspección, no cuenta con el personal calificado (descripción de perfiles de puesto), metodología de trabajo, equipos necesarios, formatos de trabajo y seguro de responsabilidad para realizar la Inspección Higiénico Sanitaria en Plantas de Procesamiento de Recursos Hidrobiológicos e Inspección de Lote de Harina de Pescado. Por esta razón, se planteó y desarrolló como una propuesta integral de mejora la elaboración de la documentación requerida para el nuevo alcance: el instructivo "Inspección Higiénica Sanitaria en Plantas de Procesamiento de Recursos Hidrobiológicos", el instructivo "Inspección y Muestreo de Lotes de Harina de Pescado", y la actualización del Manual de Calidad, Manual de Perfiles y procedimiento Proceso de Inspección, del Organismo de Inspección.Tesi

    Hydrothermally Processed Oxide Nanostructures and Their Lithium–ion Storage Properties

    Get PDF
    Y- and Si-based oxide nanopowders were synthesized by a hydrothermal reaction of Y or Si powders with NaOH or LiOH aqueous solution. Nanoparticles with different morphology such as elongated nanospheres, flower-like nanoparticles and nanowires were produced by a control of processing parameters, in particular, the starting composition of solution. The preliminary result of electrochemical examination showed that the hydrothermally processed nanowires exhibit high initial capacities of Li-ion storage: 653 mAh/g for Y2O3 nanowires as anode materials and 186 mAh/g for Li2Si2O5 nanowires as cathode materials in a Li secondary cell. Compared to the powder with elongated sphere or flower-like shapes, the nanowires showed a higher Li-ion capacity and a better cycle property

    Mechanisms controlling anaemia in Trypanosoma congolense infected mice.

    Get PDF
    Trypanosoma congolense are extracellular protozoan parasites of the blood stream of artiodactyls and are one of the main constraints on cattle production in Africa. In cattle, anaemia is the key feature of disease and persists after parasitaemia has declined to low or undetectable levels, but treatment to clear the parasites usually resolves the anaemia. The progress of anaemia after Trypanosoma congolense infection was followed in three mouse strains. Anaemia developed rapidly in all three strains until the peak of the first wave of parasitaemia. This was followed by a second phase, characterized by slower progress to severe anaemia in C57BL/6, by slow recovery in surviving A/J and a rapid recovery in BALB/c. There was no association between parasitaemia and severity of anaemia. Furthermore, functional T lymphocytes are not required for the induction of anaemia, since suppression of T cell activity with Cyclosporin A had neither an effect on the course of infection nor on anaemia. Expression of genes involved in erythropoiesis and iron metabolism was followed in spleen, liver and kidney tissues in the three strains of mice using microarrays. There was no evidence for a response to erythropoietin, consistent with anaemia of chronic disease, which is erythropoietin insensitive. However, the expression of transcription factors and genes involved in erythropoiesis and haemolysis did correlate with the expression of the inflammatory cytokines Il6 and Ifng. The innate immune response appears to be the major contributor to the inflammation associated with anaemia since suppression of T cells with CsA had no observable effect. Several transcription factors regulating haematopoiesis, Tal1, Gata1, Zfpm1 and Klf1 were expressed at consistently lower levels in C57BL/6 mice suggesting that these mice have a lower haematopoietic capacity and therefore less ability to recover from haemolysis induced anaemia after infection

    Graphene Bilayer Structures with Superfluid Magnetoexcitons

    Get PDF
    We study superfluid behavior of a gas of spatially indirect magnetoexcitons with reference to a system of two graphene layers embedded in a multilayer dielectric structure. The system is considered as an alternative of a double quantum well in a GaAs haterostructure. We determine a range of parameters (interlayer distance, dielectric constant, magnetic field and gate voltage) where magnetoexciton superfluidity can be achieved. Temperature of superfluid transition is computed. A reduction of critical parameters caused by impurities is evaluated and critical impurity concentration is determined

    Search for CP violation in the decay B0->D*+-D-+

    Get PDF
    We report a search for CP-violating asymmetry in B0 -> D*+- D-+ decays. The analysis employs two methods of B0 reconstruction: full and partial. In the full reconstruction method all daughter particles of the B0 are required to be detected; the partial reconstruction technique requires a fully reconstructed D- and only a slow pion from the D*+ -> D0 pi_slow+ decay. From a fit to the distribution of the time interval corresponding to the distance between two B meson decay points we calculate the CP-violating parameters and find the significance of nonzero CP asymmetry to be 2.7 standard deviations.Comment: 4 pages, 3 figure

    Behavior and Impact of Zirconium in the Soil–Plant System: Plant Uptake and Phytotoxicity

    Get PDF
    Because of the large number of sites they pollute, toxic metals that contaminate terrestrial ecosystems are increasingly of environmental and sanitary concern (Uzu et al. 2010, 2011; Shahid et al. 2011a, b, 2012a). Among such metals is zirconium (Zr), which has the atomic number 40 and is a transition metal that resembles titanium in physical and chemical properties (Zaccone et al. 2008). Zr is widely used in many chemical industry processes and in nuclear reactors (Sandoval et al. 2011; Kamal et al. 2011), owing to its useful properties like hardness, corrosion-resistance and permeable to neutrons (Mushtaq 2012). Hence, the recent increased use of Zr by industry, and the occurrence of the Chernobyl and Fukashima catastrophe have enhanced environmental levels in soil and waters (Yirchenko and Agapkina 1993; Mosulishvili et al. 1994 ; Kruglov et al. 1996)

    Position Statement on Atopic Dermatitis in Sub-Saharan Africa:current status and roadmap

    Get PDF
    The first International Society of Atopic Dermatitis (ISAD) global meeting dedicated to atopic dermatitis (AD) in Sub-Saharan Africa (SSA) was held in Geneva, Switzerland in April 2019. A total of 30 participants were present at the meeting, including those from 17 SSA countries, representatives of the World Health Organization (WHO), the International Foundation for Dermatology (IFD) (a committee of the International League of Dermatological Societies, ILDS www.ilds.org), the Fondation pour la Dermatite Atopique, as well as specialists in telemedicine, artificial intelligence and therapeutic patient education (TPE)

    Compact groups with a dense free abelian subgroup

    Get PDF
    The compact groups having a dense infinite cyclic subgroup (known as monothetic compact groups) have been studied by many authors for their relevance and nice applications. In this paper we describe in full details the compact groups KK with a dense free abelian subgroup FF and we describe the minimum rank rt(K)r_t(K) of such a subgroup FF of KK. Surprisingly, it is either finite or coincides with the density character d(K)d(K) of KK.

    Knowledge, attitudes and practices (KAP) relating to avian influenza in urban and rural areas of China

    Get PDF
    <p>Abstract</p> <p>Background</p> <p>Studies have revealed that visiting poultry markets and direct contact with sick or dead poultry are significant risk factors for H5N1 infection, the practices of which could possibly be influenced by people's knowledge, attitudes and practices (KAPs) associated with avian influenza (AI). To determine the KAPs associated with AI among the Chinese general population, a cross-sectional survey was conducted in China.</p> <p>Methods</p> <p>We used standardized, structured questionnaires distributed in both an urban area (Shenzhen, Guangdong Province; n = 1,826) and a rural area (Xiuning, Anhui Province; n = 2,572) using the probability proportional to size (PPS) sampling technique.</p> <p>Results</p> <p>Approximately three-quarters of participants in both groups requested more information about AI. The preferred source of information for both groups was television. Almost three-quarters of all participants were aware of AI as an infectious disease; the urban group was more aware that it could be transmitted through poultry, that it could be prevented, and was more familiar with the relationship between AI and human infection. The villagers in Xiuning were more concerned than Shenzhen residents about human AI viral infection. Regarding preventative measures, a higher percentage of the urban group used soap for hand washing whereas the rural group preferred water only. Almost half of the participants in both groups had continued to eat poultry after being informed about the disease.</p> <p>Conclusions</p> <p>Our study shows a high degree of awareness of human AI in both urban and rural populations, and could provide scientific support to assist the Chinese government in developing strategies and health-education campaigns to prevent AI infection among the general population.</p
    corecore