Role of the different copper species on the activity of Cu/zeolite catalysts for SCR of NOx with NH3

The SCR of NOx with NH3 has been studied by using different Cu zeolite catalysts, prepared both with ZSM5 and BETA zeolite supports by ionic exchange or by impregnation. The catalysts were characterized by ICP-AES, N2 adsorption at −196 °C, XRD, TEM, XPS and H2-TPR. The catalysts characterization confirmed the presence of different Cu(II) species on all catalyst (CuO and Cu(II) exchanged on tetrahedral and octahedral positions of the zeolites framework). Clear evidences of Cu(I) or Cu(0) species were not obtained. CuO was more abundant in high copper-content catalysts and in ZSM5 catalysts, due to its lower ionic exchange capacity, while isolated Cu(II) ions are more abundant in low copper-content catalysts and in BETA catalysts. It was concluded that CuO catalyzes the oxidation of NO to NO2, and this favors the reduction of NOx at lower temperature (the NH3-NO2 reaction is faster than the NH3-NO reaction because NO2 is much more oxidizing than NO), whereas isolated Cu(II) ions maintain high NOx conversion at high temperatures.Financial support provided by the Spanish Ministry of Economy and Competitiveness (CTQ2012-30703), the Basque Government (IT-657-13) and the UPV/EHU (UFI11/39). One of the authors (UDLT) wants to acknowledge to the Basque Government for the PhD Research Grant (BFI-2010-330)

Multimodal study of unaltered cement hydrating pastes: combined high-energy laboratory powder diffraction and microtomography.

Abstract for scientific communication to 34th ECMBackground: The study of the hydration pathways of Portland cement (PC) and cement blends presents significant challenges due to their multiphase nature and varying fineness. Quantifying the dissolution of initial crystalline and amorphous phases, along with the formation of new components, is crucial. Additionally, understanding microstructural changes with time is also essential. Techniques: We are developing a novel approach based on in situ measurements of cement pastes without sample conditioning. The pastes are injected in thick capillaries (2 mm of diameter) and just the ends are sealed. Sequential data acquisition is carried out through Mo-Kα1 laboratory X-ray powder diffraction (LXRPD) and microtomography (μCT) [1-2]. This methodology is based on scanning not only the same capillary but the same volume over time to minimize variability. The use of wide capillaries is pivotal for artefact avoidance, including self-desiccation, and ensuring excellent particle averaging.Agencia Estatal de Investigación. PID2020-114650RB-I00 grant which is co-funded by ERDF Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Prevention of Periprosthetic Joint Infection in Total Hip and Knee Replacement:One European Consensus

Periprosthetic joint infection (PJI) is a devastating complication in total hip and knee replacement. Its prevention is key to decrease the incidence and avoid some consequences that seriously impact patients and health systems. In view of the variety of recommendations and guidelines, we decided to conduct an expert, peer-reviewed European consensus analysis about the pre-, intra-, and postoperative prevention of PJI. A multinational group of practicing orthopedic experts developed a series of 47 consensus statements in 6 main groups of intervention, and a 2-stage Delphi approach was launched with a threshold for agreement at 75% and for very high agreement at more than 90%. A total of 306 orthopedic surgeon responses were gathered from 9 countries. Consensus was reached for 42/47 statements, 31/47 of which achieved a very high consensus. Many preoperative actions gathered strong consensus, although areas like the use of alcoholic chlorhexidine or the timing of hair removal did not attain strong consensus, despite available evidence. Intra- and postoperative actions showed more variability regarding incise drapes, skin suturing techniques, and wound follow-up. This study confirms an important consensus among orthopedic surgeons across Europe in many areas well known to contribute to the prevention of PJI; however, there are still grounds for improvement

Microrreservas marinas artificiales en la línea de costa. Hacia un nuevo modelo de gestión de la biodiversidad en áreas litorales

Recientemente se ha propuesto a la comunidad científica la nueva figura de protección MRMA (Microrreserva Marina Artificial; AMMR en inglés) la cual también ha sido formalmente solicitada a la UNESCO para que esta institución considere reconocerla y consecuentemente, validarla. Se expone la contribución de las MRMAs a la preservación de especies protegidas, particularmente a las consideradas en peligro de extinción que propendan, de forma natural, a establecerse en escolleras y diques de abrigo de instalaciones costeras. Se mencionan las especies protegidas localizadas en las MRMAs, así como sus figuras de protección y disposiciones oficiales que les conciernen. Se exponen criterios generales de designación de MRMAs, posibles vías de solución ante problemas previsibles que puedan surgir (entendimiento entre administraciones, calidad de aguas, medidas de contingencia ante vertidos accidentales, etc.) y se deja entrever las potencialidades de las MRMAs como activo ecológico, medioambiental, urbanístico y educativo, así como el futuro papel que desempeñarán las MRMAs en la gestión del medio litoral y en el campo de la biología de la conservación. Finalmente, se establece una revisión de la legislación actual que más pudiera concernirles, destacándose los aspectos más importantes que en ellas pudieran influir. Al respecto, se destaca que ley 41/2010 de Protección del Medio Marino (Artº 26) establece que podrán formar parte de la red de Áreas Marinas Protegidas “ las áreas protegidas por instrumentos internacionales, sin perjuicio de que su declaración y gestión se ajustará a lo dispuesto en su correspondiente normativa internacional ” por lo que, si la nueva figura de protección “Microrreserva Marina Artificial” consiguiera marchamo UNESCO, aquélla podría incorporarse a la legislación española sin ninguna dificultad especial

SILAC-based phosphoproteomics reveals new PP2A-Cdc55-regulated processes in budding

Background: Protein phosphatase 2A (PP2A) is a family of conserved serine/threonine phosphatases involved in several essential aspects of cell growth and proliferation. PP2A(Cdc55) phosphatase has been extensively related to cell cycle events in budding yeast; however, few PP2A(Cdc55) substrates have been identified. Here, we performed a quantitative mass spectrometry approach to reveal new substrates of PP2A(Cdc55) phosphatase and new PP2A-related processes in mitotic arrested cells. Results: We identified 62 statistically significant PP2A(Cdc55) substrates involved mainly in actin-cytoskeleton organization. In addition, we validated new PP2A(Cdc55) substrates such as Slk19 and Lte1, involved in early and late anaphase pathways, and Zeo1, a component of the cell wall integrity pathway. Finally, we constructed docking models of Cdc55 and its substrate Mob1. We found that the predominant interface on Cdc55 is mediated by a protruding loop consisting of residues 84-90, thus highlighting the relevance of these aminoacids for substrate interaction. Conclusions: We used phosphoproteomics of Cdc55-deficient cells to uncover new PP2A(Cdc55) substrates and functions in mitosis. As expected, several hyperphosphorylated proteins corresponded to Cdk1-dependent substrates, although other kinases' consensus motifs were also enriched in our dataset, suggesting that PP2A(Cdc55) counteracts and regulates other kinases distinct from Cdk1. Indeed, Pkc1 emerged as a novel node of PP2A(Cdc55) regulation, highlighting a major role of PP2A(Cdc55) in actin cytoskeleton and cytokinesis, gene ontology terms significantly enriched in the PP2A(Cdc55)-dependent phosphoproteome

Meteorological predictions for Mars 2020 Perseverance rover landing site at Jezero crater

Correction to: Space Sci Rev (2020) 216:148 https://doi.org/10.1007/s11214-020-00763-xPeer reviewe

Nerve-sparing versus non-nerve-sparing radical hysterectomy : surgical and long-term oncological outcomes

There are controversies regarding the long-term oncological safety of preservation of pelvic innervation during radical hysterectomy (RH). This study aimed to analyze the feasibility and safety of nerve-sparing radical hysterectomy (NSRH) for cervical cancer compared with non-NSRH following 17 years of experience in a tertiary cancer referral center. Between May 1999 and June 2016, all patients who underwent RH for cervical cancer were followed-up prospectively. Comparison analyses regarding surgical outcomes, complications, overall survival (OS), disease-free survival (DFS), and cancer-specific survival (CSS) were performed between patients treated with NSRH and non-NSRH. A total of 188 patients were included (113 non-NSRH and 75 NSRH). The median follow-up was 112 months. Estimated blood loss and hospital stay were all significantly lower in the NSRH group. Overall intraoperative complication rate (p = 0.02) and need for transfusion (p = 0.016) were lower in the NSRH group. There were no differences in the median operation time, OS, DFS, CSS, or recurrence rates between the NSRH and non-NSRH group. Our study provides a wide perspective on the developments of nerve-sparing procedures for the management of women with early-stage cervical cancer. Our results suggest that NSRH is a feasible and safe procedure, with reduced morbidity outcomes

Una base de datos de inventarios de vegetación: HISPAVEG

Las bases de datos de inventarios de vegetación son una importante fuente de información en relación a un conjunto amplio de aspectos del medio natural, entre los que destacan los efectos de la gestión forestal en la diversidad vegetal, los estudios de autoecología basados en modelos de distribución de especies y la observación a largo plazo de las comunidades vegetales. Desde esta valoración esta comunicación presenta HispaVeg, una base de datos de inventarios de vegetación online, abierta y viva, con las siguientes características y resultados: Permite introducir inventarios de vegetación con diversas metodologías (estructural, como la fisionómica-estructural de Ruiz de la Torre y de la escuela de Zurich-Montpelier). En la actualidad contiene 2.663 inventarios históricos del profesor Juan Ruiz de la Torre realizados entre los años 1950 y 2000, de superficie de parcela entre 400 y 3.600 m2, tanto de formaciones arboladas como de matorrales y pastizales, con número medio de especies por inventario de 34 y distribuidos por toda la España peninsular e Islas Baleares, en un intervalo altitudinal entre 0 y 2880 m

Empleo conjunto de difracción de rayos X de polvo y microtomografía de laboratorio en la hidratación del cemento Portland.

Se trataron los aspectos más generales sobre la química del cemento, la ciencia del hormigón, el empleo de nuevos materiales más eco-eficientes en la preparación de nuevos sistemas cementantes, revalorización de residuos industriales, materiales cerámicos en el sector de la construcción, activación alcalina o geopolímeros, durabilidad, reología, etc.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech