28 research outputs found

    Intercomparaci贸n bilateral entre LATU y PTB de calibraci贸n en puntos fijos (ITS-90) del Zn al Hg de un SPRT con PTB como laboratorio piloto

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    El Laboratorio Tecnol贸gico del Uruguay, LATU, es el Instituto Metrol贸gico Nacional del Uruguay, miembro fi rmante del Acuerdo de Reconocimiento Mutuo (MRA) entre Laboratorios Nacionales de Metrolog铆a del Comit茅 Internacional de Pesas y Medidas (CIPM). Las capacidades de medida y calibraci贸n (CMCs) del LATU fueron reconocidas en junio de 2004 y se encuentran publicadas en la BIPM- Key Comparison Data Base (BIPM, 2009). El LATU estuvo acreditado desde 2001 hasta junio de 2007 por el Deutscher Kalibrier Dienst (Servicio de Acreditaci贸n Alem谩n) en las magnitudes Masa, Balanzas y Temperatura (Laboratorio DKD, DKD-K-25601). Se decidi贸 a partir de ese momento probar el cumplimiento con los criterios establecidos por el CIPM MRA y los requisitos de la Norma ISO/IEC 17025 en el marco de una auditor铆a in situ llevada a cabo en el LATU en enero de 2008. Como parte de ese proceso de revisi贸n de pares, se realiz贸 una Intercomparaci贸n Bilateral entre el PTB y el LATU en los puntos fi jos de la Escala Internacional de Temperatura (ITS-90), desde el punto triple de Hg hasta el punto de congelaci贸n del Zn, con el PTB como laboratorio piloto. En este art铆culo los resultados son presentados y discutidos de manera de sostener la declaraci贸n de mejores capacidades de medida y calibraci贸n (CMCs) en sustituci贸n de las ya declaradas. Abstract Laboratorio Tecnol贸gico del Uruguay, LATU, is the National Metrology Institute of Uruguay, signatory of the CIPM Mutual Recognition Arrangement (CIPM MRA), has Calibration and Measurement Capabilities (CMCs) in temperature that were fi rst published in the BIPM Key Comparison Data Base (BIPM, 2009) in June 2004. LATU was a DKD Laboratory accredited in Mass, Balances and Temperature from 2001 until June 2007 when it was decided to adopt the CIPM criteria for proving compliance with ISO/IEC 17025 through a Peer Review process. The LATU on site Peer Review was carried out in January 2008, as part of the process. During the evaluation, a bilateral intercomparison was performed between PTB and LATU at the ITS- 90 fi xed points covering the range from Hg TP to Zn FP with PTB acting as the Pilot Laboratory. In this paper the results are presented and discussed in order to support the declaration of better Calibration and Measurement Capabilities (CMCs) and substitute the declared ones

    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA); Scientific Opinion on Dietary Reference Values for protein

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    This opinion of the EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) deals with the setting of Dietary Reference Values (DRVs) for protein. The Panel concludes that a Population Reference Intake (PRI) can be derived from nitrogen balance studies. Several health outcomes possibly associated with protein intake were also considered but data were found to be insufficient to establish DRVs. For healthy adults of both sexes, the average requirement (AR) is 0.66 g protein/kg body weight per day based on nitrogen balance data. Considering the 97.5th percentile of the distribution of the requirement and assuming an efficiency of utilisation of dietary protein for maintenance of 47 %, the PRI for adults of all ages was estimated to be 0.83 g protein/kg body weight per day and is applicable both to high quality protein and to protein in mixed diets. For children from six months onwards, age-dependent requirements for growth estimated from average daily rates of protein deposition and adjusted by a protein efficiency for growth of 58 % were added to the requirement for maintenance of 0.66 g/kg body weight per day. The PRI was estimated based on the average requirement plus 1.96 SD using a combined SD for growth and maintenance.For pregnancy, an intake of 1, 9 and 28 g/d in the first, second and third trimesters, respectively, is proposed in addition to the PRI for non-pregnant women. For lactation, a protein intake of 19 g/d during the first six months, and of 13 g/d after six months, is proposed in addition to the PRI for non-lactating women. Data are insufficient to establish a Tolerable Upper Intake Level (UL) for protein. Intakes up to twice the PRI are regularly consumed from mixed diets by some physically active and healthy adults in Europe and are considered safe

    Intercomparaci贸n bilateral entre LATU y PTB de calibraci贸n en puntos fijos (ITS-90) del Zn al Hg de un SPRT con PTB como laboratorio piloto

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    Laboratorio Tecnol贸gico del Uruguay, LATU, is the National Metrology Institute of Uruguay, signatory of the CIPM Mutual Recognition Arrangement (CIPM MRA), has Calibration and Measurement Capabilities (CMCs) in temperature that were fi rst published in the BIPM Key Comparison Data Base (BIPM, 2009) in June 2004. LATU was a DKD Laboratory accredited in Mass, Balances and Temperature from 2001 until June 2007 when it was decided to adopt the CIPM criteria for proving compliance with ISO/IEC 17025 through a Peer Review process. The LATU on site Peer Review was carried out in January 2008, as part of the process. During the evaluation, a bilateral intercomparison was performed between PTB and LATU at the ITS- 90 fi xed points covering the range from Hg TP to Zn FP with PTB acting as the Pilot Laboratory. In this paper the results are presented and discussed in order to support the declaration of better Calibration and Measurement Capabilities (CMCs) and substitute the declared ones.El Laboratorio Tecnol贸gico del Uruguay, LATU, es el Instituto Metrol贸gico Nacional del Uruguay, miembro fi rmante del Acuerdo de Reconocimiento Mutuo (MRA) entre Laboratorios Nacionales de Metrolog铆a del Comit茅 Internacional de Pesas y Medidas (CIPM). Las capacidades de medida y calibraci贸n (CMCs) del LATU fueron reconocidas en junio de 2004 y se encuentran publicadas en la BIPM- Key Comparison Data Base (BIPM, 2009). El LATU estuvo acreditado desde 2001 hasta junio de 2007 por el Deutscher Kalibrier Dienst (Servicio de Acreditaci贸n Alem谩n) en las magnitudes Masa, Balanzas y Temperatura (Laboratorio DKD, DKD-K-25601). Se decidi贸 a partir de ese momento probar el cumplimiento con los criterios establecidos por el CIPM MRA y los requisitos de la Norma ISO/IEC 17025 en el marco de una auditor铆a in situ llevada a cabo en el LATU en enero de 2008. Como parte de ese proceso de revisi贸n de pares, se realiz贸 una Intercomparaci贸n Bilateral entre el PTB y el LATU en los puntos fi jos de la Escala Internacional de Temperatura (ITS-90), desde el punto triple de Hg hasta el punto de congelaci贸n del Zn, con el PTB como laboratorio piloto. En este art铆culo los resultados son presentados y discutidos de manera de sostener la declaraci贸n de mejores capacidades de medida y calibraci贸n (CMCs) en sustituci贸n de las ya declaradas. &nbsp
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