755 research outputs found

    HSCO+^+ and DSCO+^+: a multi-technique approach in the laboratory for the spectroscopy of interstellar ions

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    Protonated molecular species have been proven to be abundant in the interstellar gas. This class of molecules is also pivotal for the determination of important physical parameters for the ISM evolution (e.g. gas ionisation fraction) or as tracers of non-polar, hence not directly observable, species. The identification of these molecular species through radioastronomical observations is directly linked to a precise laboratory spectral characterisation. The goal of the present work is to extend the laboratory measurements of the pure rotational spectrum of the ground electronic state of protonated carbonyl sulfide (HSCO+^+) and its deuterium substituted isotopomer (DSCO+^+). At the same time, we show how implementing different laboratory techniques allows the determination of different spectroscopical properties of asymmetric-top protonated species. Three different high-resolution experiments were involved to detected for the first time the bb-type rotational spectrum of HSCO+^+, and to extend, well into the sub-millimeter region, the aa-type spectrum of the same molecular species and DSCO+^+. The electronic ground-state of both ions have been investigated in the 273-405 GHz frequency range, allowing the detection of 60 and 50 new rotational transitions for HSCO+^+ and DSCO+^+, respectively. The combination of our new measurements with the three rotational transitions previously observed in the microwave region permits the rest frequencies of the astronomically most relevant transitions to be predicted to better than 100 kHz for both HSCO+^+ and DSCO+^+ up to 500 GHz, equivalent to better than 60 m/s in terms of equivalent radial velocity. The present work illustrates the importance of using different laboratory techniques to spectroscopically characterise a protonated species at high frequency, and how a similar approach can be adopted when dealing with reactive species.Comment: 7 pages, 4 figures. Accepted for publication in Astronomy and Astrophysic

    Plan maestro de centro turístico y hotel de playa en la isla Paredones de Corinto, Chinandega.

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    Presenta un Plan maestro de centro turístico y hotel de playa en la isla Paredones de Corinto, Chinandega , en el cual el Centro Turístico de playa juega un papel muy importante para la actividad turística y para el desarrollo de grupos humanos que habitan el sector, este ofrecerá una forma válida para generar divisas y empleos locales, los cuales contribuirán a mejorar la calidad de vida de los pobladores y a estimular el avance del país, desarrollando infraestructura capaz de satisfacer a los turistas y clientes, y a la vez preservar la cultura y el ambiente del lugar

    Nivel de conocimiento y su aplicación de medidas de bioseguridad del profesional de enfermería en el servicio de Centro Quirúrgico de la Clínica San Gabriel - Lima 2022

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    La presente investigación “Nivel de conocimiento y su aplicación de medidas de bioseguridad del profesional de enfermería en el servicio de centro quirúrgico de la Clínica san Gabriel" tiene como Objetivo: Relacionar el nivel de conocimiento y la aplicación sobre medidas de bioseguridad del profesional de enfermería en el Servicio de Centro Quirúrgico de la Clínica San Gabriel. Material y Método: El presente estudio es de Nivel de investigación II, tipo correlacional, diseño no experimental se utilizó un muestreo probabilístico aleatorio simple. El área de estudio fue el área del centro quirúrgico de la Clinica San Gabriel, para la recolección de datos se aplicó un cuestionario y una guía de observación. Técnica de análisis estadística descriptiva. Material y Método: El presente estudio es de tipo cuantitativo, descriptivo correlacional, diseño no experimental, método inductivo – deductivo, se utilizó la fórmula para muestreo de poblaciones finitas. El área de estudio fue el área del Centro Quirúrgico de la Clínica San Gabriel, para la recolección de datos se utilizó como instrumentos un cuestionario y una guía de observación a 44 enfermeras y como Técnica de análisis es estadística descriptiva. Resultado: Se puede observar que del total de profesionales de enfermería encuestados un 23.0%(10) tiene un conocimiento regular, mientras que un 68% (30) tienen un conocimiento bueno, y un 9% (4) tienen un conocimiento excelente. Mientras se observa que en la aplicación de las medidas de bioseguridad un 27% (12) que aplican regular las medidas de bioseguridad, mientras que un 59% (26) tienen una aplicación buena, y que un 14% (06) tienen una aplicación excelente. Dándose una relación inversa entre los resultados de ambas evaluaciones, es decir los alumnos que obtuvieron una buena puntuación en la evaluación de conocimiento no la obtuvieron en la guía de observación. Concluyendo: que el personal de enfermería del Centro Quirurgico de la Clinica San Gabriel, tienen un conocimiento bueno en las medidas bioseguridad y una aplicación de manera regular sobre las medidas de bioseguridad

    Transancestral mapping and genetic load in systemic lupus erythematosus

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    Systemic lupus erythematosus (SLE) is an autoimmune disease with marked gender and ethnic disparities. We report a large transancestral association study of SLE using Immunochip genotype data from 27,574 individuals of European (EA), African (AA) and Hispanic Amerindian (HA) ancestry. We identify 58 distinct non-HLA regions in EA, 9 in AA and 16 in HA (∼50% of these regions have multiple independent associations); these include 24 novel SLE regions (P<5 × 10-8), refined association signals in established regions, extended associations to additional ancestries, and a disentangled complex HLA multigenic effect. The risk allele count (genetic load) exhibits an accelerating pattern of SLE risk, leading us to posit a cumulative hit hypothesis for autoimmune disease. Comparing results across the three ancestries identifies both ancestry-dependent and ancestry-independent contributions to SLE risk. Our results are consistent with the unique and complex histories of the populations sampled, and collectively help clarify the genetic architecture and ethnic disparities in SLE

    Effectiveness of Following Mediterranean Diet Recommendations in the Real World in the Incidence of Gestational Diabetes Mellitus (GDM) and Adverse Maternal-Foetal Outcomes: A Prospective, Universal, Interventional Study with a Single Group. The St Carlos Study

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    We reported that a Mediterranean Diet (MedDiet), supplemented with extra-virgin olive oil (EVOO) and pistachios, reduces GDM incidence and several other adverse outcomes. In order to assess its translational effects in the real world we evaluated the effect of MedDiet from 1st gestational visit in GDM rate compared with control (CG) and intervention (IG) groups from the previously referred trial. As secondary objective we also compared adverse perinatal outcomes between normoglycemic and diabetic women. This trial is a prospective, clinic-based, interventional study with a single group. 1066 eligible normoglycaemic women before 12 gestational weeks were assessed. 932 women (32.4 ± 5.2 years old, pre-gestational BMI 22.5 ± 3.5 kg/m2) received a motivational lifestyle interview with emphasis on daily consumption of EVOO and nuts, were followed-up and analysed. Binary regression analyses were used to examine the risk for each pregnancy outcome, pregnancy-induced hypertension, preeclampsia, gestational weight gain (GWG), caesarean-section, perineal trauma, preterm delivery, small (SGA) and large for gestational age (LGA), and Neonatal Intensive Care Unit admissions. GDM was diagnosed in 13.9%. This rate was significantly lower than the CG: RR 0.81 (0.73–0.93), p < 0.001 and no different from the IG: RR 0.96 (0.85–1.07), p = 0.468. GWG was lower in diabetic women (10.88 ± 6.46 vs. 12.30 ± 5.42 Kg; p = 0.013). Excessive weight gain (EWG) was also lower in GDM [RR 0.91 (0.86–0.96); p < 0.001] without a significant increase of insufficient weight gain. LGA were also lower (1 (0.8%) vs. 31 (3.9%); p < 0.05)), and SGA were similar (5 (3.8%) vs. 30 (3.7%)). LGA were associated to EWG (RR 1.61 (1.35–1.91), p < 0.001). Differences in other maternal-foetal outcomes were not found. In conclusions an early MedDiet nutritional intervention reduces GDM incidence and maternal-foetal adverse outcomes and should be universally applied as 1st line therapy. GDM might not be consider as a high risk pregnancy any longer

    Transancestral mapping and genetic load in systemic lupus erythematosus

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    Systemic lupus erythematosus (SLE) is an autoimmune disease with marked gender and ethnic disparities. We report a large transancestral association study of SLE using Immunochip genotype data from 27,574 individuals of European (EA), African (AA) and Hispanic Amerindian (HA) ancestry. We identify 58 distinct non-HLA regions in EA, 9 in AA and 16 in HA (B50% of these regions have multiple independent associations); these include 24 novel SLE regions (Po5 10 8), refined association signals in established regions, extended associations to additional ancestries, and a disentangled complex HLA multigenic effect. The risk allele count (genetic load) exhibits an accelerating pattern of SLE risk, leading us to posit a cumulative hit hypothesis for autoimmune disease. Comparing results across the three ancestries identifies both ancestry-dependent and ancestry-independent contributions to SLE risk. Our results are consistent with the unique and complex histories of the populations sampled, and collectively help clarify the genetic architecture and ethnic disparities in SL

    TOI-836 : a super-Earth and mini-Neptune transiting a nearby K-dwarf

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    Funding: TGW, ACC, and KH acknowledge support from STFC consolidated grant numbers ST/R000824/1 and ST/V000861/1, and UKSA grant ST/R003203/1.We present the discovery of two exoplanets transiting TOI-836 (TIC 440887364) using data from TESS Sector 11 and Sector 38. TOI-836 is a bright (T = 8.5 mag), high proper motion (∼200 mas yr−1), low metallicity ([Fe/H]≈−0.28) K-dwarf with a mass of 0.68 ± 0.05 M⊙ and a radius of 0.67 ± 0.01 R⊙. We obtain photometric follow-up observations with a variety of facilities, and we use these data-sets to determine that the inner planet, TOI-836 b, is a 1.70 ± 0.07 R⊕ super-Earth in a 3.82 day orbit, placing it directly within the so-called ‘radius valley’. The outer planet, TOI-836 c, is a 2.59 ± 0.09 R⊕ mini-Neptune in an 8.60 day orbit. Radial velocity measurements reveal that TOI-836 b has a mass of 4.5 ± 0.9 M⊕, while TOI-836 c has a mass of 9.6 ± 2.6 M⊕. Photometric observations show Transit Timing Variations (TTVs) on the order of 20 minutes for TOI-836 c, although there are no detectable TTVs for TOI-836 b. The TTVs of planet TOI-836 c may be caused by an undetected exterior planet.Publisher PDFPeer reviewe

    TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf

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    We present the discovery of two exoplanets transiting TOI-836 (TIC 440887364) using data from TESS Sector 11 and Sector 38. TOI-836 is a bright (T=8.5T = 8.5 mag), high proper motion (200\sim\,200 mas yr1^{-1}), low metallicity ([Fe/H]0.28\approx\,-0.28) K-dwarf with a mass of 0.68±0.050.68\pm0.05 M_{\odot} and a radius of 0.67±0.010.67\pm0.01 R_{\odot}. We obtain photometric follow-up observations with a variety of facilities, and we use these data-sets to determine that the inner planet, TOI-836 b, is a 1.70±0.071.70\pm0.07 R_{\oplus} super-Earth in a 3.82 day orbit, placing it directly within the so-called 'radius valley'. The outer planet, TOI-836 c, is a 2.59±0.092.59\pm0.09 R_{\oplus} mini-Neptune in an 8.60 day orbit. Radial velocity measurements reveal that TOI-836 b has a mass of 4.5±0.94.5\pm0.9 M_{\oplus} , while TOI-836 c has a mass of 9.6±2.69.6\pm2.6 M_{\oplus}. Photometric observations show Transit Timing Variations (TTVs) on the order of 20 minutes for TOI-836 c, although there are no detectable TTVs for TOI-836 b. The TTVs of planet TOI-836 c may be caused by an undetected exterior planet
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