Overview of methods used to evaluate the adequacy of nutrient intakes for individuals and populations

The objective of the present paper is to review the methods of measuring micronutrient intake adequacy for individuals and for populations in order to ascertain best practice. A systematic review was conducted to locate studies on the methodological aspects of measuring nutrient adequacy. The results showed that for individuals, qualitative methods (to find probability of adequacy) and quantitative methods (to find confidence of adequacy) have been proposed for micronutrients where there is enough data to set an average nutrient requirement (ANR). If micronutrients do not have ANR, an adequate intake (AI) is often defined and can be used to assess adequacy, provided the distribution of daily intake over a number of days is known. The probability of an individual's intake being excessive can also be compared with the upper level of safe intake and the confidence of this estimate determined in a similar way. At the population level, adequacy can be judged from the ANR using the probability approach or its short cut – the estimated average requirement cut-point method. If the micronutrient does not have an ANR, adequacy cannot be determined from the average intake and must be expressed differently. The upper level of safe intake can be used for populations in a similar way to that of individuals. All of the methodological studies reviewed were from the American continent and all used the methodology described in the Institute of Medicine publications. The present methodology should now be adapted for use in Europe

Vanadium doping effect on multifunctionality of SnO2 nanoparticles

In the present study, tin oxide (SnO2) nanoparticles were synthesized by a precursor polymeric method. The obtained nanoparticles were doped with vanadium. The samples were characterized by powder XRD, TEM, optical UV and EPR studies. XRD and TEM showed the rutile crystal structure and its revealed that the lattice cell parameters and particles size were decreased with dopant level. Optical and EPR data confirmed that the doped V enters into SnO2 and distorted the host material symmetry. The films sensing characteristics have been studied from the aspect of doping level of sensing material and microstructure. It is found that V doping on SnO2 enhance sensor sensitivity towards CO gas. The results demonstrated that V doping can improving numerous applications which the SnO2 response is maximized.Fil: Alvarez Roca, Roman. Universidade Federal do São Carlos; BrasilFil: Desimone, Paula Mariela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: da Silva, Mitchell. Universidade Federal do São Carlos; BrasilFil: Ponce, Miguel Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Longo, Elson. Universidade Federal do São Carlos; Brasi

Vanadium Doping Effect on Multifunctionality of SnO2 Nanoparticles

 In the present study, tin oxide (SnO2) nanoparticles were synthesized by a precursor polymeric method. The obtained nanoparticles were doped with vanadium. The samples were characterized by powder XRD, TEM, optical UV and EPR studies. XRD and TEM showed the rutile crystal structure and its revealed that the lattice cell parameters and particles size were decreased with dopant level. Optical and EPR data confirmed that the doped V enters into SnO2 and distorted the host material symmetry. The films sensing characteristics have been studied from the aspect of doping level of sensing material and microstructure. It is found that V doping on SnO2 enhance sensor sensitivity towards CO gas. The results demonstrated that V doping can improving numerous applications which the SnO2 response is maximized

Sequential capillarity-assisted particle assembly in a microfluidic channel

The authors acknowledge support from an ETH Research Grant ETH-15 17-1 (R. S.), from an ETH Postdoctoral Fellowship FEL-21 15-2 and SNSF PRIMA Grant 179834 (E. S.), from a Postdoctoral fellowships programme “Beatriu de Pinós”, funded by the Secretary of Universities and Research (Government of Catalonia) and by the Horizon 2020 programme of research and innovation of the European Union under the Marie Sklodwoska-Curie grant agreement no. 801370 (Grant 2018 BP 00029) (M. A. F. R.) and from a Gordon and Betty Moore Foundation Investigator Award on Aquatic Microbial Symbiosis (grant GBMF9197) (R. S.). The authors thank Dr. Heiko Wolf at IBM Research Zurich for insightful discussions.Colloidal patterning enables the placement of a wide range of materials into prescribed spatial arrangements, as required in a variety of applications, including micro- and nano-electronics, sensing, and plasmonics. Directed colloidal assembly methods, which exploit external forces to place particles with high yield and great accuracy, are particularly powerful. However, currently available techniques require specialized equipment, which limits their applicability. Here, we present a microfluidic platform to produce versatile colloidal patterns within a microchannel, based on sequential capillarity-assisted particle assembly (sCAPA). This new microfluidic technology exploits the capillary forces resulting from the controlled motion of an evaporating droplet inside a microfluidic channel to deposit individual particles in an array of traps microfabricated onto a substrate. Sequential depositions allow the generation of a desired spatial layout of colloidal particles of single or multiple types, dictated solely by the geometry of the traps and the filling sequence. We show that the platform can be used to create a variety of patterns and that the microfluidic channel easily allows surface functionalization of trapped particles. By enabling colloidal patterning to be carried out in a controlled environment, exploiting equipment routinely used in microfluidics, we demonstrate an easy-to-build platform that can be implemented in microfluidics labs.ETH Research Grant ETH-15 17-1ETH Postdoctoral Fellowship FEL-21 15-2SNSF PRIMA Grant 179834Postdoctoral fellowships programme "Beatriu de Pinos" - Government of CataloniaHorizon 2020 programme of research and innovation of the European Union under the Marie Sklodwoska-Curie grant 801370 2018 BP 00029Gordon and Betty Moore Foundation Investigator Award on Aquatic Microbial Symbiosis GBMF919

Optimización de procesos logísticos en empresas de distribución

El presente trabajo de investigación tiene como objetivo determinar la influencia de la optimización de procesos logísticos en las empresas distribuidoras de bebidas para la mejora de la productividad. La investigación está basada en una revisión sistemática de artículos científicos, los cuales fueron seleccionados en bases de datos detalladas a continuación: Google Académico, Redalyc, Scielo y Scopus siendo los criterios de selección: fuente de publicación (revistas científicas), autores, publicaciones con un periodo de 5 años de antigüedad. Los resultados obtenidos en la investigación describen las teorías de optimización utilizadas y dirigir estos conocimientos a empresas de distribución de bebidas en sus procesos logísticos y almacenes, cabe resaltar que también hubieron limitaciones como encontrar la información basada en el contexto del planteamiento de la pregunta por lo que esta tuvo que ser dividida en palabras claves que engloban información general del tema a tratar, obteniendo así información que nos muestre la importancia del porque las empresas de distribución deben poner énfasis en los procesos logísticos de su operación, concluimos en que las empresas que hacen énfasis en la optimización de sus procesos son aquellas que logran mantener un lugar por encima de la competencia reduciendo costos y maximizando sus ganancias

Propuesta de un diseño de relleno sanitario en el distrito de Limatambo, provincia de Anta, departamento del Cusco, 2022

La investigación tuvo como objetivo central proponer el diseño de un relleno sanitario manual para la disposición de residuos sólidos en el distrito de Limatambo, Provincia de Anta, Departamento del Cusco, 2022, y como objetivos específicos: caracterizar los residuos sólidos generados en el distrito de Limatambo y establecer algunas características estructurales del nuevo relleno sanitario manual a nivel de pre-perfil. Para este efecto, se realizó una investigación de tipo aplicada, transversal, descriptivo-propositivo y no experimental, utilizando como técnicas de acopio de datos la observación y la revisión documental. Los resultados de la investigación muestran que existe una generación per-cápita de residuos sólidos domiciliarios al 2023 de 0.53 kg/hab/día y 3.63 tn/día, los mismos que acumulados a los residuos no domiciliarios del distrito ascienden a 3.71 tn/día y 1355.55 tn/año, haciendo un volumen final de residuos sólidos dispuestos proyectados al 2032 de 36,106.11m3. Frente a esta posibilidad se propone un relleno sanitario manualmixto para 10 años, el cual tendría 9 trincheras con capacidad de disposición final de 3834 m3 cada una, lo que implica que se requeriría un área de 12,035.37 m2, a los cuales habría que agregar áreas adicionales para los aspectos administrativos y otros servicios

Diseño de gestión de almacén e inventario para optimizar costos en el área de almacén de la empresa Imperios Operadores Logísticos S. A.

La investigación se centró en diseñar la gestión de almacén e inventarios en la optimización de los costos del área de almacén en la empresa Imperios Operadores Logísticos S.A. La investigación fue aplicada, explicativa, cuantitativa y pre experimental. El diagnóstico actual del almacén de la empresa evidencia que el problema principal es la inadecuada distribución de productos, la exactitud del inventario es 29%, el nivel de cumplimiento de despachos se encuentra en 75% cuando debería ser mínimo 85%, la rotación de productos es baja. Dentro de los costos de almacén se ha determinado que el costo de unidad despachada es de 0.20 soles, el costo de unidad almacenada es 0.12 soles. El diseño la gestión de almacén e inventario, se basa en la clasificación ABC, layout, políticas de almacén y la toma física del inventario. Las mejoras de los indicadores se han evidenciado en los indicadores, el porcentaje de exactitud de inventario mejorado es 19%, el porcentaje de cumplimiento de despacho se incrementó a 85%, la rotación mensual de inventarios para Sprite mejoró a 1.045, de Fanta mejoró a 0.946, de Inca Kola mejoró a 0.946 y de Coca Kola mejoró a 1.012; el costo de unidad despachada ha mejorado a 0.17 y finalmente el costo de la unidad almacenada ha mejorado a 0.096. La propuesta de implementación de Layout es viable, ya que el VAN es S/ 134,882 y el TIR 190%, B/C 2.52

Author Correction: Early pregnancy ultrasound measurements and prediction of first trimester pregnancy loss: A logistic model (Scientific Reports, (2020), 10, 1, (1545), 10.1038/s41598-020-58114-3)

The original version of this Article contained an error in the spelling of the author Patricia J. Goedecke which was incorrectly given as Patricia J. Goeske. The original Article has been corrected

Noncommutative Field Theory from Quantum Mechanical Space-Space Noncommutativity

We investigate the incorporation of space noncommutativity into field theory by extending to the spectral continuum the minisuperspace action of the quantum mechanical harmonic oscillator propagator with an enlarged Heisenberg algebra. In addition to the usual $\star$-product deformation of the algebra of field functions, we show that the parameter of noncommutativity can occur in noncommutative field theory even in the case of free fields without self-interacting potentials.Comment: 13 page

Surfactant-Mediated Morphology and Photocatalytic Activity of α‑Ag2WO4 Material

In the present work, the morphology (hexagonal rod-like vs cuboid-like) of an α-Ag2WO4 solid-state material is manipulated by a simple controlled-precipitation method, with and without the presence of the anionic surfactant sodium dodecyl sulfate (SDS), respectively, over short reaction times. Characterization techniques, such as X-ray diffraction analysis, Rietveld refinement analysis, Fourier-transform (FT) infrared spectroscopy, FT Raman spectroscopy, UV–vis spectroscopy, transmission electron microscopy (TEM), high-resolution TEM, selected area electron diffraction, energy-dispersive X-ray spectroscopy, field emission-scanning electron microscopy (FE-SEM), and photoluminescence emission, are employed to disclose the structural and electronic properties of the α-Ag2WO4 material. First-principles calculations were performed to (i) obtain the relative stability of the six low-index surfaces of α-Ag2WO4; (ii) rationalize the crystal morphologies observed in FE-SEM images (using the Wulff construction); and (iii) determine the energy profiles associated with the transformation process between both morphologies induced by the presence of SDS. Finally, we demonstrate a relationship between morphology and photocatalytic activity, evaluated by photodegradation of Rhodamine B dye under UV light, based on the different numbers of unsaturated superficial Ag and W cations (local coordination, i.e., clusters) of each surface