11 research outputs found

    SEARCHING for NEW YELLOW SYMBIOTIC STARS: POSITIVE IDENTIFICATION of StHα63

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    Yellow symbiotic stars are useful targets for probing whether mass transfer has happened in their binary systems. However, the number of known yellow symbiotic stars is very scarce. We report spectroscopic observations of five candidate yellow symbiotic stars that were selected by their positions in the 2MASS (J - H) versus (H - K) diagram and which were included in some emission-line catalogs. Among the five candidates, only StHα63 is identified as a new yellow symbiotic star because of its spectrum and its position in the [TiO]-[TiO] diagram, which indicates a K4-K6 spectral type. In addition, the derived electron density (∼10 cm) and several emission-line intensity ratios provide further support for that classification. The other four candidates are rejected as symbiotic stars because three of them actually do not show emission lines and the fourth one only Balmer emission lines. We also found that the WISE W3-W4 index clearly separates normal K-giants from yellow symbiotic stars and therefore can be used as an additional tool for selecting candidate yellow symbiotic stars.L.F.M. acknowledges partial support by grants AYA2011-30228-C03.01 and AYA2014-57369-C3-3-P of the Spanish MINECO, both co-funded by FEDER funds.Peer Reviewe

    MODY 2: report of two cases with a new gene mutation in GCK

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    La diabetes MODY (Maturity Onset Diabetes of the Young) comprende un grupo heterogéneo de enfermedades monogénicas que se caracterizan por la disfunción de las células β. Se estima que ellas son responsables de 2-5% de los casos de diabetes. Se conocen más de 200 mutaciones en el gen de la glucoquinasa (GCK). En este trabajo se expone el caso de dos hermanas en las cuales se realizó el diagnóstico de MODY 2 a través del estudio genético, hallándose una mutación del gen de la GCK no descripto previamente en la bibliografía.MODY (maturity onset diabetes of the young) includes a heterogeneous group of monogenic diseases which are characterized by dysfunction of beta cells. It accounts for 2-5% of all cases of diabetes. Over 200 mutations in the glucokinase (GCK) gene are known. In this paper we discuss the cases of two sisters in which the diagnosis of MODY 2 was performed by genetic studies, and report the finding of a mutation in the GCK gene not previously described in the literature.Fil: Chiarpenello, J.. Centro de Endocrinología de Rosario; Argentina. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Fernández, L.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Riccobene, A.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Baella, A.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Strallnicof, M.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Castagnani, V.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Herrera, M.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Sermasi, V.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Laurenti, N.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; ArgentinaFil: Carretto, H.. Provincia de Santa Fe. Ministerio de Salud y Medio Ambiente - Rosario. Hospital Provincial del Centenario; Argentina. Centro de Endocrinología de Rosario; ArgentinaFil: Baquedano, María Sonia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentin

    Approaches of national 3D mapping: Research results and standardisation in practice

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    Over the past ten years technologies for generating, maintaining and using 3D geo-information have matured. For national mapping agencies one of the challenges is how to best extend 2D data into 3D data, making best use of research results and available technologies. Some mapping organisations are making serious progress. The question addressed in this paper is how research results achieved in the past ten years are applied in practice and what research problems remain. In addition, the paper explores the potentials of the OGC 3D standard (i.e. CityGML) for 3D national mapping and what developments are further required to make the standard better fit for this purpose. The main conclusions of the paper are that 3D data is more and more available but still suffers from a low level of usage (mainly visualisation) and standards and formats based on CityGML have been stabilised although software support is still in the early stage. Several recommendations are made to meet these problems, including the definition of European CityGML profiles (as the INSPIRE Building profile) to harmonise 3D needs and standardise 3D implementations at international level.OTB ResearchOTB Research Institute for the Built Environmen

    Generalisation in Practice Within National Mapping Agencies

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    National Mapping Agencies (NMAs) are still among the main end users of research into automated generalisation, which is transferred into their production lines via various means. This chapter includes contributions from seven NMAs, illustrating how automated generalisation is used in practice within their partly or fully automated databases and maps production lines, what results are currently being obtained and what further developments are on-going or planned. A contribution by the European Joint Research Center reports on the use of multiple representation and generalisation in the context of the implementation of the European INSPIRE directive. The chapter finishes with a synthesis of recent achievements, as well as future challenges that NMAs have begun to tackle.JRC.H.6-Digital Earth and Reference Dat

    Tirzepatide versus insulin glargine in type 2 diabetes and increased cardiovascular risk (SURPASS-4): a randomised, open-label, parallel-group, multicentre, phase 3 trial

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    Background: We aimed to assess efficacy and safety, with a special focus on cardiovascular safety, of the novel dual GIP and GLP-1 receptor agonist tirzepatide versus insulin glargine in adults with type 2 diabetes and high cardiovascular risk inadequately controlled on oral glucose-lowering medications. Methods: This open-label, parallel-group, phase 3 study was done in 187 sites in 14 countries on five continents. Eligible participants, aged 18 years or older, had type 2 diabetes treated with any combination of metformin, sulfonylurea, or sodium-glucose co-transporter-2 inhibitor, a baseline glycated haemoglobin (HbA1c) of 7·5–10·5% (58–91 mmol/mol), body-mass index of 25 kg/m2 or greater, and established cardiovascular disease or a high risk of cardiovascular events. Participants were randomly assigned (1:1:1:3) via an interactive web-response system to subcutaneous injection of either once-per-week tirzepatide (5 mg, 10 mg, or 15 mg) or glargine (100 U/mL), titrated to reach fasting blood glucose of less than 100 mg/dL. The primary endpoint was non-inferiority (0·3% non-inferiority boundary) of tirzepatide 10 mg or 15 mg, or both, versus glargine in HbA1c change from baseline to 52 weeks. All participants were treated for at least 52 weeks, with treatment continued for a maximum of 104 weeks or until study completion to collect and adjudicate major adverse cardiovascular events (MACE). Safety measures were assessed over the full study period. This study was registered with ClinicalTrials.gov, NCT03730662. Findings: Patients were recruited between Nov 20, 2018, and Dec 30, 2019. 3045 participants were screened, with 2002 participants randomly assigned to tirzepatide or glargine. 1995 received at least one dose of tirzepatide 5 mg (n=329, 17%), 10 mg (n=328, 16%), or 15 mg (n=338, 17%), or glargine (n=1000, 50%), and were included in the modified intention-to-treat population. At 52 weeks, mean HbA1c changes with tirzepatide were −2·43% (SD 0·05) with 10 mg and −2·58% (0·05) with 15 mg, versus −1·44% (0·03) with glargine. The estimated treatment difference versus glargine was −0·99% (multiplicity adjusted 97·5% CI −1·13 to −0·86) for tirzepatide 10 mg and −1·14% (−1·28 to −1·00) for 15 mg, and the non-inferiority margin of 0·3% was met for both doses. Nausea (12–23%), diarrhoea (13–22%), decreased appetite (9–11%), and vomiting (5–9%) were more frequent with tirzepatide than glargine (nausea 2%, diarrhoea 4%, decreased appetite <1%, and vomiting 2%, respectively); most cases were mild to moderate and occurred during the dose-escalation phase. The percentage of participants with hypoglycaemia (glucose <54 mg/dL or severe) was lower with tirzepatide (6–9%) versus glargine (19%), particularly in participants not on sulfonylureas (tirzepatide 1–3% vs glargine 16%). Adjudicated MACE-4 events (cardiovascular death, myocardial infarction, stroke, hospitalisation for unstable angina) occurred in 109 participants and were not increased on tirzepatide compared with glargine (hazard ratio 0·74, 95% CI 0·51–1·08). 60 deaths (n=25 [3%] tirzepatide; n=35 [4%] glargine) occurred during the study. Interpretation: In people with type 2 diabetes and elevated cardiovascular risk, tirzepatide, compared with glargine, demonstrated greater and clinically meaningful HbA1c reduction with a lower incidence of hypoglycaemia at week 52. Tirzepatide treatment was not associated with excess cardiovascular risk. Funding: Eli Lilly and Company
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