Gómez, J. (J.)
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- Meta-analysis of functional neuroimaging studies indicates that an increase of cognitive difficulty during executive tasks engages brain regions associated with time perception(2014) Radua, J. (Joaquim); Ortuño-Sanchez-Pedreño, F. (Felipe); Gómez, J. (J.); Ojeda-del Pozo, N. (N.); Guillen-Grima, F. (Francisco)
- Enterococcal bloodstream infection. Design and validation of a mortality prediction rule(John Wiley & Sons Ltd, 2016) Landecho, M.F. (Manuel F.); Lucena, F. (Felipe); Huerta, A. (Ana); Alegre, F. (Félix); Pérez-García, A. (Alejandra); Conde-Estevez, D. (David); Pozo, J.L. (José Luis) del; Gómez, J. (J.); Mauleón, E. (E.); Beunza, J.J. (Juan José); Grau, S. (Santiago); Terradas-Robledo, R. (Roser); Gea, A. (Alfredo)Background: To develop a prediction rule to describe the risk of death as a result of enterococcal bloodstream infection. Methods: A prediction rule was developed by analysing data collected from 122 patients diagnosed with entero- coccal BSI admitted to the Clınica Universidad de Navarra (Pamplona, Spain); and validated by confirming its accuracy with the data of an external population (Hospital del Mar, Barcelona). Results: According to this model, independent sig- nificant predictors for the risk of death were being diabetic, have received appro- priate treatment, severe prognosis of the underlying diseases, have renal failure, received solid organ transplant, malignancy, source of the bloodstream infection and be immunosuppressed. The prediction rule showed a very good calibration (Hosmer–Lemeshow statistic, P = 0.93) and discrimination for both training and testing sets (area under ROC curve = 0.84 and 0.83 respectively). Conclusions: The predictive rule was able to predict risk of death as a result of enterococcal bloodstream infection as well as to identify patients, who being below the thresh- old value, will have a low risk of death with a negative predictive value of 96%.
- Struvite precipitation in wastewater treatment plants anaerobic digestion supernatants using a magnesium oxide by-product(2023) Guembe, M. (M.); García, I. (I.); Aguilar-Pozo, V.B. (V. B.); Gómez, J. (J.); Chimenos, J.M. (J. M.); Elduayen-Echave, B. (Beñat); Lopez, A. (A.); Olaciregui-Arizmendi, K. (K.); Ayesa-Iturrate, E. (Eduardo); Astals-García, S.(Sergi)Struvite precipitation is a well-known technology to recover and upcycle phosphorus from municipal wastewater as a slow-release fertiliser. However, the economic and environmental costs of struvite precipitation are constrained by using technical-grade reagents as a magnesium source. This research evaluates the feasibility of using a low-grade magnesium oxide (LG-MgO) by-product from the calcination of magnesite as a magnesium source to precipitate struvite from anaerobic digestion supernatants in wastewater treatment plants. Three distinct LG-MgOs were used in this research to capture the inherent variability of this by-product. The MgO content of the LG-MgOs varied from 42 % to 56 %, which governed the reactivity of the by-product. Experimental results showed that dosing LG-MgO at P:Mg molar ratio close to stoichiometry (i.e. 1:1 and 1:2) favoured struvite precipitation, whereas higher molar ratios (i.e. 1:4, 1:6 and 1:8) favoured calcium phosphate precipitation due to the higher calcium concentration and pH. At a P: Mg molar ratio of 1:1 and 1:2, the percentage of phosphate precipitated was 53-72 % and 89-97 %, respectively, depending on the LG-MgO reactivity. A final experiment was performed to examine the composition and morphology of the precipitate obtained under the most favourable conditions, which showed that (i) struvite was the mineral phase with the highest peaks intensity and (ii) struvite was present in two different shapes: hopper and polyhedral. Overall,