Timber roof structure for outdoor auditorium in Parque Paraiso, San Blas (Madrid)

p. 468-475A timber shell structure is designed to provide covering for an outdoor auditorium in Madrid (Spain). The covering comprises five independent overlapped marquees with similar shape but diverse dimensions. The surface geometry of each marquee is defined by a hyperbolic paraboloid, with its boundaries delimited by elliptical curves in horizontal projection. Structural section for the timber shell is a composite section with several staggered layers of straight sawn timber planks, arranged in two orthogonal directions following the straight skew lines of the hyperbolic paraboloid. Over them two continuous top layers are arranged which provides bracing for the structure and support for the waterproofing material. Each layer is laid over the previous one, bolted and glued with polyurethane adhesive. Special characteristics of the design analysis and detailed erection process are described. The designed solution provides lightweight roofing with a powerful and original image, short construction time and reasonable budget.Anton, A.; Meijide, AG.; Corbal, JJ. (2009). Timber roof structure for outdoor auditorium in Parque Paraiso, San Blas (Madrid). Editorial Universitat Politècnica de València. http://hdl.handle.net/10251/653

Evaluating the phylogenetic position of the monotypic family Halophytaceae (Portulacinae, Caryophyllales) based on plastid and nuclear molecular data sets

In spite of numerous phylogenetic studies to determine relationships in Order Caryophyllales and particularly in the suborder Portulacinae, the position of Halophytaceae remains controversial. Halophytum ameghinoi belongs to this monotypic succulent herbaceous family, which is endemic to the Argentine Monte eco-region, in arid and semi-arid scrubland. Some have suggested a relationship with Chenopodiaceae and others a close relationship with Basellaceae and/or Portulacaceae. We performed detailed phylogenetic analyses using the nuclear (18S, ITS, and 26S) and plastid regions (atpB, trnK/matK, ndhF, rbcL, and rpl16) of previous and newly obtained DNA sequences in the suborder Portulacinae to clarify Halophytum’s relationships and to identify the DNA markers with the strongest phylogenetic signal. Phylogenetic analyses performed with the total evidence data matrix confi rmed a close relationship between Halophytum and Basellaceae and a close relationship of both with Didiereaceae. The DNA marker with the most parsimony informative sites was the plastid trnK/matK, followed by ndhF. When the proportion of variable to informative sites is considered, the nuclear ITS region retrieved the most informative sites. However, phylogenetic trees retrieved by total evidence analyses improve branch support if this nuclear region is not used.: A pesar de numerosos estudios fi logenéticos para determinar las relaciones de las familias del orden Caryophyllales y particularmente del suborden Portulacinae, no se ha establecido aún la posición de Halophytaceae. Halophytum ameghinoi es el único representante de esta familia de hierbas suculentas, endémico de la ecoregión Monte Argentino, creciendo en vegetación arbustiva árida o semi-árida. Algunos autores han sugerido una relación con Chenopodiaceae y otros con Basellaceae y/o Portulacaceae y Montiaceae. Para determinar la posición de Halophytum en el suborden Portulacinae se llevaron a cabo análisis fi logenéticos utilizando regiones nucleares (18S, ITS, 26S) y regiones de cloroplasto (atpB, trnK/matK, ndhF, rbcL y rpl16), de secuencias de ADN previas y secuenciadas en este proyecto. El análisis fi logenético basado en la matriz de evidencia total confi rmó una cercana relación entre Halophytum y Basellaceae. Estos dos grupos resultaron cercanamente emparentados con Didiereaceae. La región de ADN con mayor número de sitios variables fue la región de cloroplasto trnk/matK seguida por ndhF, aunque la región nuclear de ITS resultó con más sitios variables si se toma en cuenta el porcentaje de sitios variables/sitios informativos. Sin embargo, si esta región nuclear es eliminada, los árboles fi logenéticos muestran valores de soporte de ramas más altos.Fil: Anton, Ana Maria Ramona. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Hernández Hernández, Tania. Instituto de Ecología; MéxicoFil: De Nova, Arturo. Universidad Autónoma de San Luis Potosí.; MéxicoFil: Sosa, Victoria. Instituto de Ecología; Méxic

Variability of methane fluxes at the Ebro Delta due to rice field: comparison between inventories and Radon Tracer Method based results.

The Ebro River Delta, in the northwestern Mediterranean basin, has an extension of 320 km2 and is mainly covered by rice fields. Rice fields are known to be one of the main sources of anthropogenic methane emissions, and a better estimation of its temporal variability in relation to the different rice cultivation phases is important to help with the implementation of emission reduction strategies (Àgueda et al., 2017), In the framework of the ClimaDat network, an atmospheric station was installed in the middle of the Ebro Delta in 2012. A Picarro G2301 for greenhouse gases (GHG) atmospheric concentrations and an ARMON (Atmospheric Radon Monitor) for atmospheric 222Rn concentrations were collocated among other instruments. Nocturnal hourly atmospheric observations of CH4 and 222Rn measured between 2013 and 2019 were used to apply the Radon Tracer Method (RTM) for retrieving CH4 fluxes over the footprint area. The Ebro River Delta has a reduced dimension and a complex meteorological regime highly influenced by the Ebro channelled winds and the sea breezes, making it difficult to calculate GHG fluxes using global or regional inversion models. However, the use of high-resolution backtrajectories (model WRF-Flexpart) coupled with the traceRadon daily radon flux maps for Europe (Karsten et al., 2022), with a resolution of 0.05 degrees, has allowed the use of the RTM in this complex area. Methane fluxes estimated by RTM were compared with fluxes directly measured with chambers in past studies (Martínez-Eixarch et al., 2018) and with data obtained by the EDGAR inventory (Crippa et al., 2022). Results show a promising agreement between methane fluxes obtained with different methods, and a variability clearly governed by the rice crop cycle which is not reflected in the methane emissions values reported in EDGAR inventories.Peer ReviewedPostprint (published version

Metrology for low-cost CO2 sensors applications: the case of a steady-state through-flow (SS-TF) chamber for CO2 fluxes observations

Soil CO2 emissions are one of the largest contributions to the global carbon cycle, and a full understanding of processes generating them and how climate change may modify them is needed and still uncertain. Thus, a dense spatial and temporal network of CO2 flux measurements from soil could help reduce uncertainty in the global carbon budgets. In the present study, the design, assembly, and calibration of low-cost air enquirer kits, including CO2 and environmental parameters sensors, is presented. Different types of calibrations for the CO2 sensors and their associated errors are calculated. In addition, for the first time, this type of sensor has been applied to design, develop, and test a new steady-state through-flow (SS-TF) chamber for simultaneous measurements of CO2 fluxes in soil and CO2 concentrations in air. The sensors’ responses were corrected for temperature, relative humidity, and pressure conditions in order to reduce the uncertainty in the measured CO2 values and of the following calculated CO2 fluxes based on SS-TF. CO2 soil fluxes measured by the proposed SS-TF and by a standard closed non-steady-state non-through-flow (NSS-NTF) chamber were briefly compared to ensure the reliability of the results. The use of a multiparametric fitting reduced the total uncertainty of the CO2 concentration measurements by 62 %, compared with the uncertainty that occurred when a simple CO2 calibration was applied, and by 90 %, when compared to the uncertainty declared by the manufacturer. The new SSTF system allows the continuous measurement of CO2 fluxes and CO2 ambient air with low cost (EUR ~ 1200), low energy demand (< 5 W), and low maintenance (twice per year due to sensor calibration requirements).Peer ReviewedPostprint (published version

Mejora de la gestión de abastecimiento para incrementar el nivel de despachos atendidos en la empresa Laser Quality en la ciudad de Lima – Peru, año 2019

El trabajo de suficiencia profesional tuvo como objetivo la mejora de la gestión de abastecimiento para incrementar el nivel de despachos atendidos en la empresa Laser Quality 2018/2019. Para lograr el objetivo, se realizó un diagnóstico de la empresa, detectando las causas en torno a las herramientas Ishikawa y Pareto , luego se diseñó una gestión de abastecimiento aplicando diferentes herramientas y metodologías, en la cual se realizó un pronóstico de demanda donde se mide el error de pronóstico con respecto a la venta real, se diseñó una política de compra para el correcto flujo de materiales con una capacidad de respuesta y condiciones de pagos hacia los proveedores, se aplicó la herramienta MRP para el correcto flujo de materiales e insumos para un abastecimiento constante obteniendo inventarios saludables, además se aplicó la metodología planeamiento CPFR en la cual se integró las áreas más importantes evaluando los objetivos planteados y se toma acciones correctivas de cara a una mejora de excelencia. Los resultados que se obtuvieron en el trabajo de suficiencia profesional aplicando estas herramientas y metodologías, con una eficacia promedio de proyección de demanda en 94.83% permitiendo una planificación conjunta con el MRP para el correcto abastecimiento con una cobertura de 0.25 referente a 7 días de insumos, materiales y productos terminados, un lead time de proveedores de 5 días, además de un correcto plan mensual de presupuesto para una negociación optima con los proveedores. El trabajo de suficiencia profesional concluyo con el nuevo diseño de gestión de abastecimiento se mejoró el nivel de despachos de 75.63% a 92.82% en el segundo semestre 2018, dejando de percibir de S/905,669.00 a S/218,953.00 por pedidos no atendidos, en el unidades vendida

First estimation of CH4fluxes using the222Rn Tracer Method over the central Iberian Peninsula

Emissions of CH4 over the central Iberian Peninsula have been estimated experimentally for the first time using the Radon Tracer Method (RTM), which uses the atmospheric noble radioactive gas 222Rn as an auxiliary tracer. The nocturnal enhancement ratios of atmospheric concentrations of CH4 and 222Rn, continuously measured at the station of Gredos and Iruelas within the IC3 network since 2012, were used to early estimate the methane emissions in this region by multiplying for a constant radon flux. The possible influence of different methane source areas was observed by footprint analysis of FLEXPART with ECMWF meteorological input at 0.2 degrees horizontal resolution. A linear relationship between atmospheric radon and methane concentrations has been found to occur in 20% of the nocturnal episodes and an average methane emission of 0.12 mg m-2 h-1 ± 0.03 (1 s). The data coverage and method is coherent with CH4 fluxes inferred with the same RTM in Germany, Canada and East Asia and our flux estimates are similar to methane emissions reported by the bottom-up inventory EDGARv4.2 .Peer ReviewedPostprint (published version

The protective association of endogenous immunoglobulins against sepsis mortality is restricted to patients with moderate organ failure

Immunoglobulines; Sèpsia; SupervivènciaInmunoglobulinas; Sepsis; SupervivenciaImmunoglobulins; Sepsis; SurvivalBackground Pre-evaluation of endogenous immunoglobulin levels is a potential strategy to improve the results of intravenous immunoglobulins in sepsis, but more work has to be done to identify those patients who could benefit the most from this treatment. The objective of this study was to evaluate the impact of endogenous immunoglobulins on the mortality risk in sepsis depending on disease severity. Methods This was a retrospective observational study including 278 patients admitted to the ICU with sepsis fulfilling the SEPSIS-3 criteria, coming from the Spanish GRECIA and ABISS-EDUSEPSIS cohorts. Patients were distributed into two groups depending on their Sequential Organ Failure Assessment score at ICU admission (SOFA < 8, n = 122 and SOFA ≥ 8, n = 156), and the association between immunoglobulin levels at ICU admission with mortality was studied in each group by Kaplan–Meier and multivariate logistic regression analysis. Results ICU/hospital mortality in the SOFA < 8 group was 14.8/23.0%, compared to 30.1/35.3% in the SOFA ≥ 8 group. In the group with SOFA < 8, the simultaneous presence of total IgG < 407 mg/dl, IgM < 43 mg/dl and IgA < 219 mg/dl was associated with a reduction in the survival mean time of 6.6 days in the first 28 days and was a robust predictor of mortality risk either during the acute or during the post-acute phase of the disease (OR for ICU mortality: 13.79; OR for hospital mortality: 7.98). This predictive ability remained in the absence of prior immunosuppression (OR for ICU mortality: 17.53; OR for hospital mortality: 5.63). Total IgG < 407 mg/dl or IgG1 < 332 mg/dl was also an independent predictor of ICU mortality in this group. In contrast, in the SOFA ≥ 8 group, we found no immunoglobulin thresholds associated with neither ICU nor hospital mortality. Conclusions Endogenous immunoglobulin levels may have a different impact on the mortality risk of sepsis patients based on their severity. In patients with moderate organ failure, the simultaneous presence of low levels of IgG, IgA and IgM was a consistent predictor of both acute and post-acute mortalities.Funding was provided by SACYL (Grant No. BOCYL-D-26072010), Instituto de Salud Carlos III (Grant Nos. EMER 07/050, PI12-01815)