Search Results - "Farina, P"
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Rapidly star-forming galaxies adjacent to quasars at redshifts exceeding 6
Published in Nature (London) (25-05-2017)“…Four galaxies discovered near quasars at redshifts exceeding 6 have star-formation rates that are high enough to explain the massive elliptical galaxies known…”
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Quantitative Constraints on the Reionization History from the IGM Damping Wing Signature in Two Quasars at z > 7
Published in The Astrophysical journal (10-09-2018)“…During reionization, neutral hydrogen in the intergalactic medium (IGM) imprints a damping wing absorption feature on the spectrum of high-redshift quasars. A…”
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An 800-million-solar-mass black hole in a significantly neutral Universe at a redshift of 7.5
Published in Nature (London) (25-01-2018)“…Observations of a quasar at redshift 7.54, when the Universe was just five per cent of its current age, suggest that the Universe was significantly neutral at…”
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Detecting and Characterizing Young Quasars. I. Systemic Redshifts and Proximity Zone Measurements
Published in The Astrophysical journal (01-09-2020)“…In a multiwavelength survey of 13 quasars at 5.8 z 6.5, which were preselected to be potentially young, we find five objects with extremely small proximity…”
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Physical Properties of 15 Quasars at z 6.5
Published in The Astrophysical journal (10-11-2017)“…Quasars are galaxies hosting accreting supermassive black holes; due to their brightness, they are unique probes of the early universe. To date, only a few…”
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Sociodemographic and health status differences in delaying medical care during the COVID-19 pandemic among older adults: findings from the Health and Retirement Study
Published in BMC public health (10-09-2022)“…During the COVID-19 Pandemic, adults in the United States reported delaying medical care, which may be tied risk of infection and local policies limiting…”
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Does adding MRI and CSF-based biomarkers improve cognitive status classification based on cognitive performance questionnaires?
Published in PloS one (08-05-2023)“…Cognitive status classification (e.g. dementia, cognitive impairment without dementia, and normal) based on cognitive performance questionnaires has been…”
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Dynamic Changes in the Association Between Education and Health in the United States
Published in The Milbank quarterly (01-04-2023)“…Policy Points We reviewed some of the recent advances in education and health, arguing that attention to social contextual factors and the dynamics of social…”
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The Luminosity–Area Relation of z > 2 Quasars’ Lyα Nebulae
Published in Astrophysical journal. Letters (01-07-2023)“…Abstract Cool ( T ∼ 10 4 K) gas is commonly observed around z > 2 quasars as traced by extended Ly α emission. These large-scale nebulae are usually studied…”
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THE MOLECULAR WIND IN THE NEAREST SEYFERT GALAXY CIRCINUS REVEALED BY ALMA
Published in The Astrophysical journal (01-12-2016)“…ABSTRACT We present ALMA observations of the inner 1′ (1.2 kpc) of the Circinus galaxy, the nearest Seyfert. We target CO (1-0) in the region associated with a…”
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The role of Southern context in shaping life course exposures linked to dementia incidence for Black and White older adults in the United States
Published in BMC geriatrics (11-11-2024)“…While racial inequities in dementia risk are well-documented in the United States, research has paid less attention to role of US Southern context in shaping…”
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Measurements of the z ∼ 6 Intergalactic Medium Optical Depth and Transmission Spikes Using a New z > 6.3 Quasar Sample
Published in The Astrophysical journal (01-11-2020)“…We report new measurements of the intergalactic medium (IGM) Ly and Lyβ effective optical depth at 5.3 < z < 6.5, using a new sample of quasar sight lines…”
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The Ionized- and Cool-gas Content of the BR1202−0725 System as Seen by MUSE and ALMA
Published in The Astrophysical journal (01-10-2020)“…We present Multi Unit Spectroscopic Explorer (MUSE) observations of the gas-rich major merger BR1202−0725 at z ∼ 4.7, which constitutes one of the most…”
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Wear behavior of bainitic and pearlitic microstructures from microalloyed railway wheel steel
Published in Wear (15-09-2020)“…Wear and contact fatigue are the main problems that reduce the durability of the rail and wheels. Pearlitic and bainitic microstructures have been studied over…”
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Anticipatory stress, state policy contexts, and mental health during the COVID-19 pandemic
Published in SSM - population health (01-09-2023)“…Substantial economic disruptions during the COVID-19 pandemic upended daily life and contributed to a widespread symptom of psychological distress during this…”
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Spectral Energy Distributions of Companion Galaxies to z ∼ 6 Quasars
Published in The Astrophysical journal (20-08-2019)“…Massive, quiescent galaxies are already observed at redshift z ∼ 4, i.e., ∼1.5 Gyr after the big bang. Current models predict them to be formed via massive,…”
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Quantitative analysis of myocardial blood flow in surgically revascularized and not revascularized myocardial segments. A pilot PET study
Published in European journal of nuclear medicine and molecular imaging (01-05-2024)“…Purpose To prospectively compare changes in myocardial blood flow (MBF) and myocardial flow reserve (MFR) in multivessel coronary artery disease (MVCAD)…”
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Effect of niobium and molybdenum addition on the wear resistance and the rolling contact fatigue of railway wheels
Published in Wear (15-02-2021)“…Brazilian heavy-haul railway companies have drawn extensive research in the last years for developing solutions that can make the operation in this area more…”
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Socioeconomic status across the life course and dementia-status life expectancy among older Americans
Published in SSM - population health (01-09-2021)“…This study examines how socioeconomic status (SES) across the life course is associated with individuals’ lifetime dementia experience – the years of life…”
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Caught in the act: discovery of a physical quasar triplet
Published in Monthly notices of the Royal Astronomical Society (11-05-2013)“…We present the discovery of a triplet of quasars at z 1.51. The whole system is well accommodated within 25 arcsec (i.e. 200 kpc in projected distance). The…”
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