Search Results - "ALEXANDER, D. R"
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Predicting the Kinematic Evidence of Gravitational Instability
Published in The Astrophysical journal (01-12-2020)“…Observations with the Atacama Large Millimeter/Submillimeter Array (ALMA) have dramatically improved our understanding of the site of exoplanet formation:…”
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Radiation-hydrodynamic models of X-ray and EUV photoevaporating protoplanetary discs
Published in Monthly notices of the Royal Astronomical Society (21-01-2010)“…We present the first radiation-hydrodynamic model of a protoplanetary disc irradiated with an X-ray extreme ultraviolet (X-EUV) spectrum. In a model where the…”
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Evidence for an MHD Disk Wind via Optical Forbidden Line Spectroastrometry
Published in The Astrophysical journal (01-05-2021)“…Spectroastrometry is used to investigate the low-velocity component (LVC) of the optical forbidden emission from the T Tauri stars RU Lupi and AS 205 N. Both…”
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Massive black hole binary mergers within subparsec scale gas discs
Published in Monthly notices of the Royal Astronomical Society (11-03-2009)“…We study the efficiency and dynamics of supermassive black hole binary mergers driven by angular momentum loss to small-scale gas discs. Such binaries form…”
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Photoevaporation of protoplanetary discs – II. Evolutionary models and observable properties
Published in Monthly notices of the Royal Astronomical Society (11-06-2006)“…We present a new model for protoplanetary disc evolution. This model combines viscous evolution with photoevaporation of the disc. However, in a companion…”
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Dust dynamics during protoplanetary disc clearing
Published in Monthly notices of the Royal Astronomical Society (21-02-2007)“…We consider the dynamics of dust and gas during the clearing of protoplanetary discs. We work within the context of a photoevaporation/viscous model for the…”
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Breaking mean-motion resonances during Type I planet migration
Published in Monthly notices of the Royal Astronomical Society (01-03-2018)“…Abstract We present 2D hydrodynamical simulations of pairs of planets migrating simultaneously in the Type I regime in a protoplanetary disc. Convergent…”
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Systematic evaluation of fMRI data-processing pipelines for consistent functional connectomics
Published in Nature communications (04-06-2024)“…Functional interactions between brain regions can be viewed as a network, enabling neuroscientists to investigate brain function through network science. Here,…”
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Photoevaporation of protoplanetary discs – I. Hydrodynamic models
Published in Monthly notices of the Royal Astronomical Society (11-06-2006)“…In this paper, we consider the effect of the direct ionizing stellar radiation field on the evolution of protoplanetary discs subject to photoevaporative…”
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The relationship between accretion disc age and stellar age and its consequences for protostellar discs
Published in Monthly notices of the Royal Astronomical Society (01-01-2012)“…We show that for young stars which are still accreting and for which measurements of stellar age t *, disc mass M disc and accretion rate are available,…”
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Dust dynamics in planet-forming discs in binary systems
Published in European physical journal plus (01-01-2023)“…In multiple stellar systems, interactions among the companion stars and their discs affect planet formation. In the circumstellar case, tidal truncation makes…”
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Global gravitational instabilities in discs with infall
Published in Monthly notices of the Royal Astronomical Society (01-05-2011)“…Gravitational instability plays an important role in driving gas accretion in massive protostellar discs. Particularly strong is the global gravitational…”
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Dopaminergic brainstem disconnection is common to pharmacological and pathological consciousness perturbation
Published in Proceedings of the National Academy of Sciences - PNAS (27-07-2021)“…Clinical research into consciousness has long focused on cortical macroscopic networks and their disruption in pathological or pharmacological consciousness…”
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Whole-brain modelling identifies distinct but convergent paths to unconsciousness in anaesthesia and disorders of consciousness
Published in Communications biology (20-04-2022)“…The human brain entertains rich spatiotemporal dynamics, which are drastically reconfigured when consciousness is lost due to anaesthesia or disorders of…”
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Reduced emergent character of neural dynamics in patients with a disrupted connectome
Published in NeuroImage (Orlando, Fla.) (01-04-2023)“…•Relationship between emergent dynamics, functional hierarchy, and controllability.•DOC patients exhibit less hierarchical and emergent neural dynamics.•DOC…”
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Decoupling speciation and extinction reveals both abiotic and biotic drivers shaped 250 million years of diversity in crocodile-line archosaurs
Published in Nature ecology & evolution (01-01-2024)“…Whereas living representatives of Pseudosuchia, crocodylians, number fewer than 30 species, more than 700 pseudosuchian species are known from their…”
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Distributed harmonic patterns of structure-function dependence orchestrate human consciousness
Published in Communications biology (28-01-2023)“…A central question in neuroscience is how consciousness arises from the dynamic interplay of brain structure and function. Here we decompose functional MRI…”
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Methylphenidate Ameliorates Behavioural and Neurobiological Deficits in Executive Function for Patients with Chronic Traumatic Brain Injury
Published in Journal of clinical medicine (29-01-2024)“…(1) : Traumatic brain injury (TBI) often results in cognitive impairments, including in visuospatial planning and executive function. Methylphenidate (MPh)…”
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Developmental Exposure to Aroclor 1254 Alters Migratory Behavior in Juvenile European Starlings (Sturnus vulgaris)
Published in Environmental science & technology (19-05-2015)“…Birds exposed to endocrine disrupting chemicals during development could be susceptible to neurological and other physiological changes affecting migratory…”
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In vivo mapping of pharmacologically induced functional reorganization onto the human brain's neurotransmitter landscape
Published in Science advances (16-06-2023)“…To understand how pharmacological interventions can exert their powerful effects on brain function, we need to understand how they engage the brain's rich…”
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