J-PLUS: The javalambre photometric local universe survey

ABSTRACT: TheJavalambrePhotometric Local UniverseSurvey (J-PLUS )isanongoing 12-band photometricopticalsurvey, observingthousands of squaredegrees of theNorthernHemispherefromthededicated JAST/T80 telescope at the Observatorio Astrofísico de Javalambre (OAJ). The T80Cam is a camera with a field of view of 2 deg2 mountedon a telescopewith a diameter of 83 cm, and isequippedwith a uniquesystem of filtersspanningtheentireopticalrange (3500–10 000 Å). Thisfiltersystemis a combination of broad-, medium-, and narrow-band filters, optimallydesigned to extracttherest-framespectralfeatures (the 3700–4000 Å Balmer break region, Hδ, Ca H+K, the G band, and the Mg b and Ca triplets) that are key to characterizingstellartypes and delivering a low-resolutionphotospectrumforeach pixel of theobservedsky. With a typicaldepth of AB ∼21.25 mag per band, thisfilter set thusallowsforanunbiased and accuratecharacterization of thestellarpopulation in our Galaxy, itprovidesanunprecedented 2D photospectralinformationforall resolved galaxies in the local Universe, as well as accuratephoto-z estimates (at the δ z/(1 + z)∼0.005–0.03 precisionlevel) formoderatelybright (up to r ∼ 20 mag) extragalacticsources. Whilesomenarrow-band filters are designedforthestudy of particular emissionfeatures ([O II]/λ3727, Hα/λ6563) up to z < 0.017, theyalsoprovidewell-definedwindowsfortheanalysis of otheremissionlines at higherredshifts. As a result, J-PLUS has thepotential to contribute to a widerange of fields in Astrophysics, both in thenearbyUniverse (MilkyWaystructure, globular clusters, 2D IFU-likestudies, stellarpopulations of nearby and moderate-redshiftgalaxies, clusters of galaxies) and at highredshifts (emission-line galaxies at z ≈ 0.77, 2.2, and 4.4, quasi-stellarobjects, etc.). Withthispaper, wereleasethefirst∼1000 deg2 of J-PLUS data, containingabout 4.3 millionstars and 3.0 milliongalaxies at r <  21mag. With a goal of 8500 deg2 forthe total J-PLUS footprint, thesenumbers are expected to rise to about 35 millionstars and 24 milliongalaxiesbytheend of thesurvey.Funding for the J-PLUS Project has been provided by the Governments of Spain and Aragón through the Fondo de Inversiones de Teruel, the Spanish Ministry of Economy and Competitiveness (MINECO; under grants AYA2017-86274-P, AYA2016-77846-P, AYA2016-77237-C3-1-P, AYA2015-66211-C2-1-P, AYA2015-66211-C2-2, AYA2012-30789, AGAUR grant SGR-661/2017, and ICTS-2009-14), and European FEDER funding (FCDD10-4E-867, FCDD13-4E-2685

Development of the International Severe Asthma Registry (ISAR) : A Modified Delphi Study

This study is cofunded by Optimum Patient Care Global and AstraZeneca.Peer reviewedPostprin

Retinoblastoma seeds: impact on American Joint Committee on Cancer clinical staging

Aim To investigate whether the American Joint Committee on Cancer (AJCC) clinical category cT2b needs to be subclassified by the type and distribution of retinoblastoma (RB) seeding. Methods Multicentre, international registry-based data were collected from RB centres enrolled between January 2001 and December 2013. 1054 RB eyes with vitreous or subretinal seeds from 18 ophthalmic oncology centres, in 13 countries within six continents were analysed. Local treatment failure was defined as the use of secondary enucleation or external beam radiation therapy (EBRT) and was estimated with the Kaplan-Meier method. Results Clinical category cT2b included 1054 eyes. Median age at presentation was 16.0 months. Of these, 428 (40.6%) eyes were salvaged, and 430 (40.8%) were treated with primary and 196 (18.6%) with secondary enucleation. Of the 592 eyes that had complete data for globe salvage analysis, the distribution of seeds was focal in 143 (24.2%) and diffuse in 449 (75.8%). The 5-year Kaplan-Meier cumulative globe-salvage (without EBRT) was 78% and 49% for eyes with focal and diffuse RB seeding, respectively. Cox proportional hazards regression analysis confirmed a higher local treatment failure risk with diffuse seeds as compared with focal seeds (hazard rate: 2.8; p<0.001). There was insufficient evidence to prove or disprove an association between vitreous seed type and local treatment failure risk(p=0.06). Conclusion This international, multicentre, registry-based analysis of RB eyes affirmed that eyes with diffuse intraocular distribution of RB seeds at diagnosis had a higher risk of local treatment failure when compared with focal seeds. Subclassification of AJCC RB category cT2b into focal vs diffuse seeds will improve prognostication for eye salvage.Ophthalmic researc

Design of Ag/ and Pt/TiO2-SiO2 nanomaterials for the photocatalytic degradation of phenol under solar irradiation

The design of hybrid mesoporous TiO2-SiO2 (TS1) materials decorated with Ag and Pt nanoparticles was performed. The photocatalytic degradation of phenol under artificial solar irradiation was studied and the activity and selectivity of the intermediate products were verified. TiO2-SiO2 was prepared by sol-gel method while Ag- and Pt-based photocatalysts (TS1-Ag and TS1-Pt) were prepared by photodeposition of the noble metals on TS1. Two series of photocatalysts were prepared varying Ag and Pt contents (0.5 and 1.0 wt%). An increase in the photocatalytic activity up to two and five times higher than TS1 was found on TS1-Ag-1.0 and TS1-Pt-1.0, respectively. Changes in the intermediate products were detected on Ag- and Pt-based photocatalysts with an increase in the catechol formation up to 3.3 and 6.6 times higher than that observed on TS1, respectively. A two-parallel reaction mechanism for the hydroquinone and catechol formation is proposed. A linear correlation between the photocatalytic activity and the surface concentration of noble metals was found indicating that the electron affinity of noble metals is the driven force for both the increase in the photoactivity and for the remarkable changes in the selectivity of products.Juan Matos thanks to Basal Chilean Program PFB-27, FAE-829, and CORFO-15IPPID-45676 project for the financial support. Biviana Llano thanks to the “Universidad de Antioquia, Comité para el Desarrollo de la Investigación—CODI” and to the “Departamento Administrativo de Ciencia, Tecnología e Innovación (Colciencias)-Programa de Doctorados Nacionales 2004” for the financial support

Development of a tool to assess the methodological quality of studies reporting on archaeologically excavated human skeletons: an international Delphi study

Methodological bias can directly affect the interpretation of research data. Studies reporting on excavated skeletons represent a valuable source of information in medicine, dentistry, archaeology and anthropology, and forensic sciences. However, these studies represent a specific setting with their own methodology, for which no quality assessment tool is available. The aim was to develop a critical appraisal tool to assess the methodological quality of studies reporting on archaeologically excavated human skeletons. An international Delphi study was therefore conducted to support item generation and ensure content validity for a new tool. Experts from the following domains were consulted: dentistry, forensic sciences, archaeology and anthropology, general medicine, epidemiology, and statistics. Participants judged the relevance and comprehensiveness of items retrieved from the literature. Consensus was predefined as 75% agreement between experts, and achieved within two Delphi rounds. As a result, 44 and 32 participants completed the first and second Delphi rounds, respectively, achieving consensus on 17 items. This research provides the first evidence-based tool for the methodological assessment of studies reporting on archaeologically excavated skeletons. Clinicians and researchers can use this tool for critical appraisal of studies or when performing systematic reviews. Future research will focus on psychometric testing of the newly developed tool.</p

Results for a Migration Experiment Using Conservative Tracers in Fissured Rocks.

Abstract not availableJRC.(EI)-Environment Institut

Long-term behavior of cracked fiber reinforced concrete under service conditions

[EN] This paper presents an experimental study on creep behavior of cracked Fiber Reinforced Concrete (FRC). To this end, a conventional strength concrete incorporating hooked-end steel fibers was used. In order to represent service conditions, specimens under low sustained loads with small pre-cracking damage (lower than 0.5 mm) were tested and analyzed. Taking as a reference the residual stress A, determined according to EN 14651:2007, different stress levels for the creep tests were applied: 25%, 35% and 45% of f(R,1). For the pre-cracking damage, several initial crack openings were considered: 0.05, 0.1, 0.2, 0.3 and 0.5 mm. The specimens were tested under a four-point bending scheme for 180 days in controlled environmental conditions. The Crack Opening Rate (COR) was used as parameter to characterize the creep behavior of cracked FRC. After the creep tests, conventional flexural tests were carried out to evaluate the residual capacity and to survey the fiber density of each specimen. Both the stress level and the initial crack opening factors affected significantly the creep behavior. In all cases, the measured increases in crack openings resulted compatible with service conditions, and no negative effects on the residual post-creep behavior were observed. An expression to predict Crack Opening Rate values is proposed. (C) 2018 Elsevier Ltd. All rights reserved.Funding from projects CONICET PIP 112-201101-00765 Development and characterization of fiber reinforced concretes for structural applications , UNLP PPID2012 Damage processes in fiber reinforced concretes , UNLP 11/I188 Fibre reinforced concretes and their contribution to the sustainable development , all three from Argentine, and BIA2016-78460-C3-1-R Bases para el diseño de estructuras sostenibles de hormigón de muy alto rendimiento a nivel prenormativo / Diseño eficiente de estructuras de HMAR , from Spain, as well as the collaboration of Cementos Avellaneda and Maccaferri are greatly appreciated.Monetti, D.; Llano-Torre, A.; Torrijos, M.; Giaccio, G.; Zerbino, R.; Martí Vargas, JR.; Serna Ros, P. (2019). Long-term behavior of cracked fiber reinforced concrete under service conditions. Construction and Building Materials. 196:649-658. https://doi.org/10.1016/j.conbuildmat.2018.10.230S64965819